am 3b04bde9: am ee79b455: am 93553073: Merge "Extend init and ueventd for SE Android."
* commit '3b04bde991d57765a830e06c6f5bb094722583bd':
Extend init and ueventd for SE Android.
diff --git a/adb/Android.mk b/adb/Android.mk
index 7744d2b..248208a 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -133,6 +133,10 @@
LOCAL_CFLAGS += -DANDROID_GADGET=1
endif
+ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
+LOCAL_CFLAGS += -DALLOW_ADBD_ROOT=1
+endif
+
LOCAL_MODULE := adbd
LOCAL_FORCE_STATIC_EXECUTABLE := true
diff --git a/adb/adb.c b/adb/adb.c
index e35c334..4434524 100644
--- a/adb/adb.c
+++ b/adb/adb.c
@@ -299,6 +299,13 @@
return;
}
+ if(!strcmp(type, "sideload")) {
+ D("setting connection_state to CS_SIDELOAD\n");
+ t->connection_state = CS_SIDELOAD;
+ update_transports();
+ return;
+ }
+
t->connection_state = CS_HOST;
}
@@ -835,10 +842,43 @@
snprintf(target_str, target_size, "tcp:%d", server_port);
}
+#if !ADB_HOST
+static int should_drop_privileges() {
+#ifndef ALLOW_ADBD_ROOT
+ return 1;
+#else /* ALLOW_ADBD_ROOT */
+ int secure = 0;
+ char value[PROPERTY_VALUE_MAX];
+
+ /* run adbd in secure mode if ro.secure is set and
+ ** we are not in the emulator
+ */
+ property_get("ro.kernel.qemu", value, "");
+ if (strcmp(value, "1") != 0) {
+ property_get("ro.secure", value, "1");
+ if (strcmp(value, "1") == 0) {
+ // don't run as root if ro.secure is set...
+ secure = 1;
+
+ // ... except we allow running as root in userdebug builds if the
+ // service.adb.root property has been set by the "adb root" command
+ property_get("ro.debuggable", value, "");
+ if (strcmp(value, "1") == 0) {
+ property_get("service.adb.root", value, "");
+ if (strcmp(value, "1") == 0) {
+ secure = 0;
+ }
+ }
+ }
+ }
+ return secure;
+#endif /* ALLOW_ADBD_ROOT */
+}
+#endif /* !ADB_HOST */
+
int adb_main(int is_daemon, int server_port)
{
#if !ADB_HOST
- int secure = 0;
int port;
char value[PROPERTY_VALUE_MAX];
#endif
@@ -866,31 +906,10 @@
exit(1);
}
#else
- /* run adbd in secure mode if ro.secure is set and
- ** we are not in the emulator
- */
- property_get("ro.kernel.qemu", value, "");
- if (strcmp(value, "1") != 0) {
- property_get("ro.secure", value, "1");
- if (strcmp(value, "1") == 0) {
- // don't run as root if ro.secure is set...
- secure = 1;
-
- // ... except we allow running as root in userdebug builds if the
- // service.adb.root property has been set by the "adb root" command
- property_get("ro.debuggable", value, "");
- if (strcmp(value, "1") == 0) {
- property_get("service.adb.root", value, "");
- if (strcmp(value, "1") == 0) {
- secure = 0;
- }
- }
- }
- }
/* don't listen on a port (default 5037) if running in secure mode */
/* don't run as root if we are running in secure mode */
- if (secure) {
+ if (should_drop_privileges()) {
struct __user_cap_header_struct header;
struct __user_cap_data_struct cap;
diff --git a/adb/adb.h b/adb/adb.h
index ac31f11..f7667c2 100644
--- a/adb/adb.h
+++ b/adb/adb.h
@@ -434,6 +434,7 @@
#define CS_HOST 3
#define CS_RECOVERY 4
#define CS_NOPERM 5 /* Insufficient permissions to communicate with the device */
+#define CS_SIDELOAD 6
extern int HOST;
extern int SHELL_EXIT_NOTIFY_FD;
diff --git a/adb/commandline.c b/adb/commandline.c
index ffc120f..5b2aa88 100644
--- a/adb/commandline.c
+++ b/adb/commandline.c
@@ -367,6 +367,83 @@
}
}
+int adb_download_buffer(const char *service, const void* data, int sz,
+ unsigned progress)
+{
+ char buf[4096];
+ unsigned total;
+ int fd;
+ const unsigned char *ptr;
+
+ sprintf(buf,"%s:%d", service, sz);
+ fd = adb_connect(buf);
+ if(fd < 0) {
+ fprintf(stderr,"error: %s\n", adb_error());
+ return -1;
+ }
+
+ int opt = CHUNK_SIZE;
+ opt = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &opt, sizeof(opt));
+
+ total = sz;
+ ptr = data;
+
+ if(progress) {
+ char *x = strrchr(service, ':');
+ if(x) service = x + 1;
+ }
+
+ while(sz > 0) {
+ unsigned xfer = (sz > CHUNK_SIZE) ? CHUNK_SIZE : sz;
+ if(writex(fd, ptr, xfer)) {
+ adb_status(fd);
+ fprintf(stderr,"* failed to write data '%s' *\n", adb_error());
+ return -1;
+ }
+ sz -= xfer;
+ ptr += xfer;
+ if(progress) {
+ printf("sending: '%s' %4d%% \r", service, (int)(100LL - ((100LL * sz) / (total))));
+ fflush(stdout);
+ }
+ }
+ if(progress) {
+ printf("\n");
+ }
+
+ if(readx(fd, buf, 4)){
+ fprintf(stderr,"* error reading response *\n");
+ adb_close(fd);
+ return -1;
+ }
+ if(memcmp(buf, "OKAY", 4)) {
+ buf[4] = 0;
+ fprintf(stderr,"* error response '%s' *\n", buf);
+ adb_close(fd);
+ return -1;
+ }
+
+ adb_close(fd);
+ return 0;
+}
+
+
+int adb_download(const char *service, const char *fn, unsigned progress)
+{
+ void *data;
+ unsigned sz;
+
+ data = load_file(fn, &sz);
+ if(data == 0) {
+ fprintf(stderr,"* cannot read '%s' *\n", service);
+ return -1;
+ }
+
+ int status = adb_download_buffer(service, data, sz, progress);
+ free(data);
+ return status;
+}
+
static void status_window(transport_type ttype, const char* serial)
{
char command[4096];
@@ -561,6 +638,10 @@
free(quoted_log_tags);
+ if (!strcmp(argv[0],"longcat")) {
+ strncat(buf, " -v long", sizeof(buf)-1);
+ }
+
argc -= 1;
argv += 1;
while(argc-- > 0) {
@@ -644,6 +725,7 @@
return -1;
}
+ printf("Now unlock your device and confirm the backup operation.\n");
copy_to_file(fd, outFd);
adb_close(fd);
@@ -671,6 +753,7 @@
return -1;
}
+ printf("Now unlock your device and confirm the restore operation.\n");
copy_to_file(tarFd, fd);
adb_close(fd);
@@ -1057,6 +1140,15 @@
return 0;
}
+ if(!strcmp(argv[0], "sideload")) {
+ if(argc != 2) return usage();
+ if(adb_download("sideload", argv[1], 1)) {
+ return 1;
+ } else {
+ return 0;
+ }
+ }
+
if(!strcmp(argv[0], "remount") || !strcmp(argv[0], "reboot")
|| !strcmp(argv[0], "reboot-bootloader")
|| !strcmp(argv[0], "tcpip") || !strcmp(argv[0], "usb")
@@ -1225,7 +1317,7 @@
return 0;
}
- if(!strcmp(argv[0],"logcat") || !strcmp(argv[0],"lolcat")) {
+ if(!strcmp(argv[0],"logcat") || !strcmp(argv[0],"lolcat") || !strcmp(argv[0],"longcat")) {
return logcat(ttype, serial, argc, argv);
}
diff --git a/adb/transport.c b/adb/transport.c
index 83a349a..2f7bd27 100644
--- a/adb/transport.c
+++ b/adb/transport.c
@@ -831,6 +831,7 @@
case CS_DEVICE: return "device";
case CS_HOST: return "host";
case CS_RECOVERY: return "recovery";
+ case CS_SIDELOAD: return "sideload";
case CS_NOPERM: return "no permissions";
default: return "unknown";
}
diff --git a/adb/transport_local.c b/adb/transport_local.c
index d985ee3..105c502 100644
--- a/adb/transport_local.c
+++ b/adb/transport_local.c
@@ -318,7 +318,7 @@
/* Running inside the device: use TCP socket as the transport. */
func = server_socket_thread;
}
-#endif !ADB_HOST
+#endif // !ADB_HOST
}
D("transport: local %s init\n", HOST ? "client" : "server");
diff --git a/debuggerd/Android.mk b/debuggerd/Android.mk
index 6cfe79b..f127363 100644
--- a/debuggerd/Android.mk
+++ b/debuggerd/Android.mk
@@ -5,12 +5,9 @@
LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
-LOCAL_SRC_FILES:= debuggerd.c utility.c getevent.c $(TARGET_ARCH)/machine.c $(TARGET_ARCH)/unwind.c symbol_table.c
-ifeq ($(TARGET_ARCH),arm)
-LOCAL_SRC_FILES += $(TARGET_ARCH)/pr-support.c
-endif
+LOCAL_SRC_FILES:= debuggerd.c utility.c getevent.c $(TARGET_ARCH)/machine.c
-LOCAL_CFLAGS := -Wall
+LOCAL_CFLAGS := -Wall -Werror -std=gnu99
LOCAL_MODULE := debuggerd
ifeq ($(ARCH_ARM_HAVE_VFP),true)
@@ -20,7 +17,7 @@
LOCAL_CFLAGS += -DWITH_VFP_D32
endif # ARCH_ARM_HAVE_VFP_D32
-LOCAL_STATIC_LIBRARIES := libcutils libc
+LOCAL_SHARED_LIBRARIES := libcutils libc libcorkscrew
include $(BUILD_EXECUTABLE)
diff --git a/debuggerd/arm/machine.c b/debuggerd/arm/machine.c
index d5efb79..ca45c9b 100644
--- a/debuggerd/arm/machine.c
+++ b/debuggerd/arm/machine.c
@@ -34,10 +34,11 @@
#include <linux/input.h>
#include <linux/user.h>
-#include "utility.h"
+#include "../utility.h"
+#include "../machine.h"
/* enable to dump memory pointed to by every register */
-#define DUMP_MEM_FOR_ALL_REGS 0
+#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
#ifdef WITH_VFP
#ifdef WITH_VFP_D32
@@ -47,172 +48,22 @@
#endif
#endif
-/* Main entry point to get the backtrace from the crashing process */
-extern int unwind_backtrace_with_ptrace(int tfd, pid_t pid, mapinfo *map,
- unsigned int sp_list[],
- int *frame0_pc_sane,
- bool at_fault);
-
/*
- * If this isn't clearly a null pointer dereference, dump the
- * /proc/maps entries near the fault address.
- *
- * This only makes sense to do on the thread that crashed.
+ * If configured to do so, dump memory around *all* registers
+ * for the crashing thread.
*/
-static void show_nearby_maps(int tfd, int pid, mapinfo *map)
-{
- siginfo_t si;
-
- memset(&si, 0, sizeof(si));
- if (ptrace(PTRACE_GETSIGINFO, pid, 0, &si)) {
- _LOG(tfd, false, "cannot get siginfo for %d: %s\n",
- pid, strerror(errno));
+static void dump_memory_and_code(int tfd, pid_t tid, bool at_fault) {
+ struct pt_regs regs;
+ if(ptrace(PTRACE_GETREGS, tid, 0, ®s)) {
return;
}
- if (!signal_has_address(si.si_signo))
- return;
- uintptr_t addr = (uintptr_t) si.si_addr;
- addr &= ~0xfff; /* round to 4K page boundary */
- if (addr == 0) /* null-pointer deref */
- return;
+ if (at_fault && DUMP_MEMORY_FOR_ALL_REGISTERS) {
+ static const char REG_NAMES[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";
- _LOG(tfd, false, "\nmemory map around addr %08x:\n", si.si_addr);
-
- /*
- * Search for a match, or for a hole where the match would be. The list
- * is backward from the file content, so it starts at high addresses.
- */
- bool found = false;
- mapinfo *next = NULL;
- mapinfo *prev = NULL;
- while (map != NULL) {
- if (addr >= map->start && addr < map->end) {
- found = true;
- next = map->next;
- break;
- } else if (addr >= map->end) {
- /* map would be between "prev" and this entry */
- next = map;
- map = NULL;
- break;
- }
-
- prev = map;
- map = map->next;
- }
-
- /*
- * Show "next" then "match" then "prev" so that the addresses appear in
- * ascending order (like /proc/pid/maps).
- */
- if (next != NULL) {
- _LOG(tfd, false, "%08x-%08x %s\n", next->start, next->end, next->name);
- } else {
- _LOG(tfd, false, "(no map below)\n");
- }
- if (map != NULL) {
- _LOG(tfd, false, "%08x-%08x %s\n", map->start, map->end, map->name);
- } else {
- _LOG(tfd, false, "(no map for address)\n");
- }
- if (prev != NULL) {
- _LOG(tfd, false, "%08x-%08x %s\n", prev->start, prev->end, prev->name);
- } else {
- _LOG(tfd, false, "(no map above)\n");
- }
-}
-
-/*
- * Dumps a few bytes of memory, starting a bit before and ending a bit
- * after the specified address.
- */
-static void dump_memory(int tfd, int pid, uintptr_t addr,
- bool only_in_tombstone)
-{
- char code_buffer[64]; /* actual 8+1+((8+1)*4) + 1 == 45 */
- char ascii_buffer[32]; /* actual 16 + 1 == 17 */
- uintptr_t p, end;
-
- p = addr & ~3;
- p -= 32;
- if (p > addr) {
- /* catch underflow */
- p = 0;
- }
- end = p + 80;
- /* catch overflow; 'end - p' has to be multiples of 16 */
- while (end < p)
- end -= 16;
-
- /* Dump the code around PC as:
- * addr contents ascii
- * 00008d34 ef000000 e8bd0090 e1b00000 512fff1e ............../Q
- * 00008d44 ea00b1f9 e92d0090 e3a070fc ef000000 ......-..p......
- */
- while (p < end) {
- char* asc_out = ascii_buffer;
-
- sprintf(code_buffer, "%08x ", p);
-
- int i;
- for (i = 0; i < 4; i++) {
- /*
- * If we see (data == -1 && errno != 0), we know that the ptrace
- * call failed, probably because we're dumping memory in an
- * unmapped or inaccessible page. I don't know if there's
- * value in making that explicit in the output -- it likely
- * just complicates parsing and clarifies nothing for the
- * enlightened reader.
- */
- long data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL);
- sprintf(code_buffer + strlen(code_buffer), "%08lx ", data);
-
- int j;
- for (j = 0; j < 4; j++) {
- /*
- * Our isprint() allows high-ASCII characters that display
- * differently (often badly) in different viewers, so we
- * just use a simpler test.
- */
- char val = (data >> (j*8)) & 0xff;
- if (val >= 0x20 && val < 0x7f) {
- *asc_out++ = val;
- } else {
- *asc_out++ = '.';
- }
- }
- p += 4;
- }
- *asc_out = '\0';
- _LOG(tfd, only_in_tombstone, "%s %s\n", code_buffer, ascii_buffer);
- }
-
-}
-
-void dump_stack_and_code(int tfd, int pid, mapinfo *map,
- int unwind_depth, unsigned int sp_list[],
- bool at_fault)
-{
- struct pt_regs r;
- int sp_depth;
- bool only_in_tombstone = !at_fault;
-
- if(ptrace(PTRACE_GETREGS, pid, 0, &r)) return;
-
- if (DUMP_MEM_FOR_ALL_REGS && at_fault) {
- /*
- * If configured to do so, dump memory around *all* registers
- * for the crashing thread.
- *
- * TODO: remove duplicates.
- */
- static const char REG_NAMES[] = "R0R1R2R3R4R5R6R7R8R9SLFPIPSPLRPC";
-
- int reg;
- for (reg = 0; reg < 16; reg++) {
+ for (int reg = 0; reg < 14; reg++) {
/* this may not be a valid way to access, but it'll do for now */
- uintptr_t addr = r.uregs[reg];
+ uintptr_t addr = regs.uregs[reg];
/*
* Don't bother if it looks like a small int or ~= null, or if
@@ -222,152 +73,65 @@
continue;
}
- _LOG(tfd, only_in_tombstone, "\nmem near %.2s:\n",
- ®_NAMES[reg*2]);
- dump_memory(tfd, pid, addr, false);
- }
- } else {
- unsigned int pc, lr;
- pc = r.ARM_pc;
- lr = r.ARM_lr;
-
- _LOG(tfd, only_in_tombstone, "\ncode around pc:\n");
- dump_memory(tfd, pid, (uintptr_t) pc, only_in_tombstone);
-
- if (lr != pc) {
- _LOG(tfd, only_in_tombstone, "\ncode around lr:\n");
- dump_memory(tfd, pid, (uintptr_t) lr, only_in_tombstone);
+ _LOG(tfd, false, "\nmemory near %.2s:\n", ®_NAMES[reg * 2]);
+ dump_memory(tfd, tid, addr, at_fault);
}
}
- if (at_fault) {
- show_nearby_maps(tfd, pid, map);
- }
+ _LOG(tfd, !at_fault, "\ncode around pc:\n");
+ dump_memory(tfd, tid, (uintptr_t)regs.ARM_pc, at_fault);
- unsigned int p, end;
- unsigned int sp = r.ARM_sp;
-
- p = sp - 64;
- if (p > sp)
- p = 0;
- p &= ~3;
- if (unwind_depth != 0) {
- if (unwind_depth < STACK_CONTENT_DEPTH) {
- end = sp_list[unwind_depth-1];
- }
- else {
- end = sp_list[STACK_CONTENT_DEPTH-1];
- }
- }
- else {
- end = p + 256;
- /* 'end - p' has to be multiples of 4 */
- if (end < p)
- end = ~7;
- }
-
- _LOG(tfd, only_in_tombstone, "\nstack:\n");
-
- /* If the crash is due to PC == 0, there will be two frames that
- * have identical SP value.
- */
- if (sp_list[0] == sp_list[1]) {
- sp_depth = 1;
- }
- else {
- sp_depth = 0;
- }
-
- while (p <= end) {
- char *prompt;
- char level[16];
- long data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL);
- if (p == sp_list[sp_depth]) {
- sprintf(level, "#%02d", sp_depth++);
- prompt = level;
- }
- else {
- prompt = " ";
- }
-
- /* Print the stack content in the log for the first 3 frames. For the
- * rest only print them in the tombstone file.
- */
- _LOG(tfd, (sp_depth > 2) || only_in_tombstone,
- "%s %08x %08x %s\n", prompt, p, data,
- map_to_name(map, data, ""));
- p += 4;
- }
- /* print another 64-byte of stack data after the last frame */
-
- end = p+64;
- /* 'end - p' has to be multiples of 4 */
- if (end < p)
- end = ~7;
-
- while (p <= end) {
- long data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL);
- _LOG(tfd, (sp_depth > 2) || only_in_tombstone,
- " %08x %08x %s\n", p, data,
- map_to_name(map, data, ""));
- p += 4;
+ if (regs.ARM_pc != regs.ARM_lr) {
+ _LOG(tfd, !at_fault, "\ncode around lr:\n");
+ dump_memory(tfd, tid, (uintptr_t)regs.ARM_lr, at_fault);
}
}
-void dump_pc_and_lr(int tfd, int pid, mapinfo *map, int unwound_level,
- bool at_fault)
-{
- struct pt_regs r;
-
- if(ptrace(PTRACE_GETREGS, pid, 0, &r)) {
- _LOG(tfd, !at_fault, "tid %d not responding!\n", pid);
- return;
- }
-
- if (unwound_level == 0) {
- _LOG(tfd, !at_fault, " #%02d pc %08x %s\n", 0, r.ARM_pc,
- map_to_name(map, r.ARM_pc, "<unknown>"));
- }
- _LOG(tfd, !at_fault, " #%02d lr %08x %s\n", 1, r.ARM_lr,
- map_to_name(map, r.ARM_lr, "<unknown>"));
-}
-
-void dump_registers(int tfd, int pid, bool at_fault)
+void dump_registers(const ptrace_context_t* context __attribute((unused)),
+ int tfd, pid_t tid, bool at_fault)
{
struct pt_regs r;
bool only_in_tombstone = !at_fault;
- if(ptrace(PTRACE_GETREGS, pid, 0, &r)) {
- _LOG(tfd, only_in_tombstone,
- "cannot get registers: %s\n", strerror(errno));
+ if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+ _LOG(tfd, only_in_tombstone, "cannot get registers: %s\n", strerror(errno));
return;
}
- _LOG(tfd, only_in_tombstone, " r0 %08x r1 %08x r2 %08x r3 %08x\n",
- r.ARM_r0, r.ARM_r1, r.ARM_r2, r.ARM_r3);
- _LOG(tfd, only_in_tombstone, " r4 %08x r5 %08x r6 %08x r7 %08x\n",
- r.ARM_r4, r.ARM_r5, r.ARM_r6, r.ARM_r7);
- _LOG(tfd, only_in_tombstone, " r8 %08x r9 %08x 10 %08x fp %08x\n",
- r.ARM_r8, r.ARM_r9, r.ARM_r10, r.ARM_fp);
- _LOG(tfd, only_in_tombstone,
- " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n",
- r.ARM_ip, r.ARM_sp, r.ARM_lr, r.ARM_pc, r.ARM_cpsr);
+ _LOG(tfd, only_in_tombstone, " r0 %08x r1 %08x r2 %08x r3 %08x\n",
+ (uint32_t)r.ARM_r0, (uint32_t)r.ARM_r1, (uint32_t)r.ARM_r2, (uint32_t)r.ARM_r3);
+ _LOG(tfd, only_in_tombstone, " r4 %08x r5 %08x r6 %08x r7 %08x\n",
+ (uint32_t)r.ARM_r4, (uint32_t)r.ARM_r5, (uint32_t)r.ARM_r6, (uint32_t)r.ARM_r7);
+ _LOG(tfd, only_in_tombstone, " r8 %08x r9 %08x sl %08x fp %08x\n",
+ (uint32_t)r.ARM_r8, (uint32_t)r.ARM_r9, (uint32_t)r.ARM_r10, (uint32_t)r.ARM_fp);
+ _LOG(tfd, only_in_tombstone, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n",
+ (uint32_t)r.ARM_ip, (uint32_t)r.ARM_sp, (uint32_t)r.ARM_lr,
+ (uint32_t)r.ARM_pc, (uint32_t)r.ARM_cpsr);
#ifdef WITH_VFP
struct user_vfp vfp_regs;
int i;
- if(ptrace(PTRACE_GETVFPREGS, pid, 0, &vfp_regs)) {
- _LOG(tfd, only_in_tombstone,
- "cannot get registers: %s\n", strerror(errno));
+ if(ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
+ _LOG(tfd, only_in_tombstone, "cannot get registers: %s\n", strerror(errno));
return;
}
for (i = 0; i < NUM_VFP_REGS; i += 2) {
- _LOG(tfd, only_in_tombstone,
- " d%-2d %016llx d%-2d %016llx\n",
- i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
+ _LOG(tfd, only_in_tombstone, " d%-2d %016llx d%-2d %016llx\n",
+ i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
}
- _LOG(tfd, only_in_tombstone, " scr %08lx\n\n", vfp_regs.fpscr);
+ _LOG(tfd, only_in_tombstone, " scr %08lx\n", vfp_regs.fpscr);
#endif
}
+
+void dump_thread(const ptrace_context_t* context, int tfd, pid_t tid, bool at_fault) {
+ dump_registers(context, tfd, tid, at_fault);
+
+ dump_backtrace_and_stack(context, tfd, tid, at_fault);
+
+ if (at_fault) {
+ dump_memory_and_code(tfd, tid, at_fault);
+ dump_nearby_maps(context, tfd, tid);
+ }
+}
diff --git a/debuggerd/arm/pr-support.c b/debuggerd/arm/pr-support.c
deleted file mode 100644
index 358d9b7..0000000
--- a/debuggerd/arm/pr-support.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/* ARM EABI compliant unwinding routines
- Copyright (C) 2004, 2005 Free Software Foundation, Inc.
- Contributed by Paul Brook
-
- This file is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- In addition to the permissions in the GNU General Public License, the
- Free Software Foundation gives you unlimited permission to link the
- compiled version of this file into combinations with other programs,
- and to distribute those combinations without any restriction coming
- from the use of this file. (The General Public License restrictions
- do apply in other respects; for example, they cover modification of
- the file, and distribution when not linked into a combine
- executable.)
-
- This file is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING. If not, write to
- the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
-
-/****************************************************************************
- * The functions here are derived from gcc/config/arm/pr-support.c from the
- * 4.3.x release. The main changes here involve the use of ptrace to retrieve
- * memory/processor states from a remote process.
- ****************************************************************************/
-
-#include <sys/types.h>
-#include <unwind.h>
-
-#include "utility.h"
-
-/* We add a prototype for abort here to avoid creating a dependency on
- target headers. */
-extern void abort (void);
-
-/* Derived from _Unwind_VRS_Pop to use ptrace */
-extern _Unwind_VRS_Result
-unwind_VRS_Pop_with_ptrace (_Unwind_Context *context,
- _Unwind_VRS_RegClass regclass,
- _uw discriminator,
- _Unwind_VRS_DataRepresentation representation,
- pid_t pid);
-
-typedef struct _ZSt9type_info type_info; /* This names C++ type_info type */
-
-/* Misc constants. */
-#define R_IP 12
-#define R_SP 13
-#define R_LR 14
-#define R_PC 15
-
-#define uint32_highbit (((_uw) 1) << 31)
-
-void __attribute__((weak)) __cxa_call_unexpected(_Unwind_Control_Block *ucbp);
-
-/* Unwind descriptors. */
-
-typedef struct
-{
- _uw16 length;
- _uw16 offset;
-} EHT16;
-
-typedef struct
-{
- _uw length;
- _uw offset;
-} EHT32;
-
-/* Personality routine helper functions. */
-
-#define CODE_FINISH (0xb0)
-
-/* Derived from next_unwind_byte to use ptrace */
-/* Return the next byte of unwinding information, or CODE_FINISH if there is
- no data remaining. */
-static inline _uw8
-next_unwind_byte_with_ptrace (__gnu_unwind_state * uws, pid_t pid)
-{
- _uw8 b;
-
- if (uws->bytes_left == 0)
- {
- /* Load another word */
- if (uws->words_left == 0)
- return CODE_FINISH; /* Nothing left. */
- uws->words_left--;
- uws->data = get_remote_word(pid, uws->next);
- uws->next++;
- uws->bytes_left = 3;
- }
- else
- uws->bytes_left--;
-
- /* Extract the most significant byte. */
- b = (uws->data >> 24) & 0xff;
- uws->data <<= 8;
- return b;
-}
-
-/* Execute the unwinding instructions described by UWS. */
-_Unwind_Reason_Code
-unwind_execute_with_ptrace(_Unwind_Context * context, __gnu_unwind_state * uws,
- pid_t pid)
-{
- _uw op;
- int set_pc;
- _uw reg;
-
- set_pc = 0;
- for (;;)
- {
- op = next_unwind_byte_with_ptrace (uws, pid);
- if (op == CODE_FINISH)
- {
- /* If we haven't already set pc then copy it from lr. */
- if (!set_pc)
- {
- _Unwind_VRS_Get (context, _UVRSC_CORE, R_LR, _UVRSD_UINT32,
- ®);
- _Unwind_VRS_Set (context, _UVRSC_CORE, R_PC, _UVRSD_UINT32,
- ®);
- set_pc = 1;
- }
- /* Drop out of the loop. */
- break;
- }
- if ((op & 0x80) == 0)
- {
- /* vsp = vsp +- (imm6 << 2 + 4). */
- _uw offset;
-
- offset = ((op & 0x3f) << 2) + 4;
- _Unwind_VRS_Get (context, _UVRSC_CORE, R_SP, _UVRSD_UINT32, ®);
- if (op & 0x40)
- reg -= offset;
- else
- reg += offset;
- _Unwind_VRS_Set (context, _UVRSC_CORE, R_SP, _UVRSD_UINT32, ®);
- continue;
- }
-
- if ((op & 0xf0) == 0x80)
- {
- op = (op << 8) | next_unwind_byte_with_ptrace (uws, pid);
- if (op == 0x8000)
- {
- /* Refuse to unwind. */
- return _URC_FAILURE;
- }
- /* Pop r4-r15 under mask. */
- op = (op << 4) & 0xfff0;
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_CORE, op, _UVRSD_UINT32,
- pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- if (op & (1 << R_PC))
- set_pc = 1;
- continue;
- }
- if ((op & 0xf0) == 0x90)
- {
- op &= 0xf;
- if (op == 13 || op == 15)
- /* Reserved. */
- return _URC_FAILURE;
- /* vsp = r[nnnn]. */
- _Unwind_VRS_Get (context, _UVRSC_CORE, op, _UVRSD_UINT32, ®);
- _Unwind_VRS_Set (context, _UVRSC_CORE, R_SP, _UVRSD_UINT32, ®);
- continue;
- }
- if ((op & 0xf0) == 0xa0)
- {
- /* Pop r4-r[4+nnn], [lr]. */
- _uw mask;
-
- mask = (0xff0 >> (7 - (op & 7))) & 0xff0;
- if (op & 8)
- mask |= (1 << R_LR);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_CORE, mask, _UVRSD_UINT32,
- pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- if ((op & 0xf0) == 0xb0)
- {
- /* op == 0xb0 already handled. */
- if (op == 0xb1)
- {
- op = next_unwind_byte_with_ptrace (uws, pid);
- if (op == 0 || ((op & 0xf0) != 0))
- /* Spare. */
- return _URC_FAILURE;
- /* Pop r0-r4 under mask. */
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_CORE, op,
- _UVRSD_UINT32, pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- if (op == 0xb2)
- {
- /* vsp = vsp + 0x204 + (uleb128 << 2). */
- int shift;
-
- _Unwind_VRS_Get (context, _UVRSC_CORE, R_SP, _UVRSD_UINT32,
- ®);
- op = next_unwind_byte_with_ptrace (uws, pid);
- shift = 2;
- while (op & 0x80)
- {
- reg += ((op & 0x7f) << shift);
- shift += 7;
- op = next_unwind_byte_with_ptrace (uws, pid);
- }
- reg += ((op & 0x7f) << shift) + 0x204;
- _Unwind_VRS_Set (context, _UVRSC_CORE, R_SP, _UVRSD_UINT32,
- ®);
- continue;
- }
- if (op == 0xb3)
- {
- /* Pop VFP registers with fldmx. */
- op = next_unwind_byte_with_ptrace (uws, pid);
- op = ((op & 0xf0) << 12) | ((op & 0xf) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_VFP, op, _UVRSD_VFPX,
- pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- if ((op & 0xfc) == 0xb4)
- {
- /* Pop FPA E[4]-E[4+nn]. */
- op = 0x40000 | ((op & 3) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_FPA, op, _UVRSD_FPAX,
- pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- /* op & 0xf8 == 0xb8. */
- /* Pop VFP D[8]-D[8+nnn] with fldmx. */
- op = 0x80000 | ((op & 7) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_VFP, op, _UVRSD_VFPX, pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- if ((op & 0xf0) == 0xc0)
- {
- if (op == 0xc6)
- {
- /* Pop iWMMXt D registers. */
- op = next_unwind_byte_with_ptrace (uws, pid);
- op = ((op & 0xf0) << 12) | ((op & 0xf) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_WMMXD, op,
- _UVRSD_UINT64, pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- if (op == 0xc7)
- {
- op = next_unwind_byte_with_ptrace (uws, pid);
- if (op == 0 || (op & 0xf0) != 0)
- /* Spare. */
- return _URC_FAILURE;
- /* Pop iWMMXt wCGR{3,2,1,0} under mask. */
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_WMMXC, op,
- _UVRSD_UINT32, pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- if ((op & 0xf8) == 0xc0)
- {
- /* Pop iWMMXt wR[10]-wR[10+nnn]. */
- op = 0xa0000 | ((op & 0xf) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_WMMXD, op,
- _UVRSD_UINT64, pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- if (op == 0xc8)
- {
-#ifndef __VFP_FP__
- /* Pop FPA registers. */
- op = next_unwind_byte_with_ptrace (uws, pid);
- op = ((op & 0xf0) << 12) | ((op & 0xf) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_FPA, op, _UVRSD_FPAX,
- pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
-#else
- /* Pop VFPv3 registers D[16+ssss]-D[16+ssss+cccc] with vldm. */
- op = next_unwind_byte_with_ptrace (uws, pid);
- op = (((op & 0xf0) + 16) << 12) | ((op & 0xf) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_VFP, op,
- _UVRSD_DOUBLE, pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
-#endif
- }
- if (op == 0xc9)
- {
- /* Pop VFP registers with fldmd. */
- op = next_unwind_byte_with_ptrace (uws, pid);
- op = ((op & 0xf0) << 12) | ((op & 0xf) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_VFP, op,
- _UVRSD_DOUBLE, pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- /* Spare. */
- return _URC_FAILURE;
- }
- if ((op & 0xf8) == 0xd0)
- {
- /* Pop VFP D[8]-D[8+nnn] with fldmd. */
- op = 0x80000 | ((op & 7) + 1);
- if (unwind_VRS_Pop_with_ptrace (context, _UVRSC_VFP, op, _UVRSD_DOUBLE,
- pid)
- != _UVRSR_OK)
- return _URC_FAILURE;
- continue;
- }
- /* Spare. */
- return _URC_FAILURE;
- }
- return _URC_OK;
-}
diff --git a/debuggerd/arm/unwind.c b/debuggerd/arm/unwind.c
deleted file mode 100644
index d9600b7..0000000
--- a/debuggerd/arm/unwind.c
+++ /dev/null
@@ -1,667 +0,0 @@
-/* ARM EABI compliant unwinding routines.
- Copyright (C) 2004, 2005 Free Software Foundation, Inc.
- Contributed by Paul Brook
-
- This file is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- In addition to the permissions in the GNU General Public License, the
- Free Software Foundation gives you unlimited permission to link the
- compiled version of this file into combinations with other programs,
- and to distribute those combinations without any restriction coming
- from the use of this file. (The General Public License restrictions
- do apply in other respects; for example, they cover modification of
- the file, and distribution when not linked into a combine
- executable.)
-
- This file is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING. If not, write to
- the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
-
-/****************************************************************************
- * The functions here are derived from gcc/config/arm/unwind-arm.c from the
- * 4.3.x release. The main changes here involve the use of ptrace to retrieve
- * memory/processor states from a remote process.
- ****************************************************************************/
-
-#include <cutils/logd.h>
-#include <sys/ptrace.h>
-#include <unwind.h>
-#include "utility.h"
-
-#include "symbol_table.h"
-
-typedef struct _ZSt9type_info type_info; /* This names C++ type_info type */
-
-void __attribute__((weak)) __cxa_call_unexpected(_Unwind_Control_Block *ucbp);
-bool __attribute__((weak)) __cxa_begin_cleanup(_Unwind_Control_Block *ucbp);
-bool __attribute__((weak)) __cxa_type_match(_Unwind_Control_Block *ucbp,
- const type_info *rttip,
- bool is_reference,
- void **matched_object);
-
-/* Misc constants. */
-#define R_IP 12
-#define R_SP 13
-#define R_LR 14
-#define R_PC 15
-
-#define EXIDX_CANTUNWIND 1
-#define uint32_highbit (((_uw) 1) << 31)
-
-#define UCB_FORCED_STOP_FN(ucbp) ((ucbp)->unwinder_cache.reserved1)
-#define UCB_PR_ADDR(ucbp) ((ucbp)->unwinder_cache.reserved2)
-#define UCB_SAVED_CALLSITE_ADDR(ucbp) ((ucbp)->unwinder_cache.reserved3)
-#define UCB_FORCED_STOP_ARG(ucbp) ((ucbp)->unwinder_cache.reserved4)
-
-struct core_regs
-{
- _uw r[16];
-};
-
-/* We use normal integer types here to avoid the compiler generating
- coprocessor instructions. */
-struct vfp_regs
-{
- _uw64 d[16];
- _uw pad;
-};
-
-struct vfpv3_regs
-{
- /* Always populated via VSTM, so no need for the "pad" field from
- vfp_regs (which is used to store the format word for FSTMX). */
- _uw64 d[16];
-};
-
-struct fpa_reg
-{
- _uw w[3];
-};
-
-struct fpa_regs
-{
- struct fpa_reg f[8];
-};
-
-struct wmmxd_regs
-{
- _uw64 wd[16];
-};
-
-struct wmmxc_regs
-{
- _uw wc[4];
-};
-
-/* Unwind descriptors. */
-
-typedef struct
-{
- _uw16 length;
- _uw16 offset;
-} EHT16;
-
-typedef struct
-{
- _uw length;
- _uw offset;
-} EHT32;
-
-/* The ABI specifies that the unwind routines may only use core registers,
- except when actually manipulating coprocessor state. This allows
- us to write one implementation that works on all platforms by
- demand-saving coprocessor registers.
-
- During unwinding we hold the coprocessor state in the actual hardware
- registers and allocate demand-save areas for use during phase1
- unwinding. */
-
-typedef struct
-{
- /* The first fields must be the same as a phase2_vrs. */
- _uw demand_save_flags;
- struct core_regs core;
- _uw prev_sp; /* Only valid during forced unwinding. */
- struct vfp_regs vfp;
- struct vfpv3_regs vfp_regs_16_to_31;
- struct fpa_regs fpa;
- struct wmmxd_regs wmmxd;
- struct wmmxc_regs wmmxc;
-} phase1_vrs;
-
-/* This must match the structure created by the assembly wrappers. */
-typedef struct
-{
- _uw demand_save_flags;
- struct core_regs core;
-} phase2_vrs;
-
-
-/* An exception index table entry. */
-
-typedef struct __EIT_entry
-{
- _uw fnoffset;
- _uw content;
-} __EIT_entry;
-
-/* Derived version to use ptrace */
-typedef _Unwind_Reason_Code (*personality_routine_with_ptrace)
- (_Unwind_State,
- _Unwind_Control_Block *,
- _Unwind_Context *,
- pid_t);
-
-/* Derived version to use ptrace */
-/* ABI defined personality routines. */
-static _Unwind_Reason_Code unwind_cpp_pr0_with_ptrace (_Unwind_State,
- _Unwind_Control_Block *, _Unwind_Context *, pid_t);
-static _Unwind_Reason_Code unwind_cpp_pr1_with_ptrace (_Unwind_State,
- _Unwind_Control_Block *, _Unwind_Context *, pid_t);
-static _Unwind_Reason_Code unwind_cpp_pr2_with_ptrace (_Unwind_State,
- _Unwind_Control_Block *, _Unwind_Context *, pid_t);
-
-/* Execute the unwinding instructions described by UWS. */
-extern _Unwind_Reason_Code
-unwind_execute_with_ptrace(_Unwind_Context * context, __gnu_unwind_state * uws,
- pid_t pid);
-
-/* Derived version to use ptrace. Only handles core registers. Disregards
- * FP and others.
- */
-/* ABI defined function to pop registers off the stack. */
-
-_Unwind_VRS_Result unwind_VRS_Pop_with_ptrace (_Unwind_Context *context,
- _Unwind_VRS_RegClass regclass,
- _uw discriminator,
- _Unwind_VRS_DataRepresentation representation,
- pid_t pid)
-{
- phase1_vrs *vrs = (phase1_vrs *) context;
-
- switch (regclass)
- {
- case _UVRSC_CORE:
- {
- _uw *ptr;
- _uw mask;
- int i;
-
- if (representation != _UVRSD_UINT32)
- return _UVRSR_FAILED;
-
- mask = discriminator & 0xffff;
- ptr = (_uw *) vrs->core.r[R_SP];
- /* Pop the requested registers. */
- for (i = 0; i < 16; i++)
- {
- if (mask & (1 << i)) {
- vrs->core.r[i] = get_remote_word(pid, ptr);
- ptr++;
- }
- }
- /* Writeback the stack pointer value if it wasn't restored. */
- if ((mask & (1 << R_SP)) == 0)
- vrs->core.r[R_SP] = (_uw) ptr;
- }
- return _UVRSR_OK;
-
- default:
- return _UVRSR_FAILED;
- }
-}
-
-/* Core unwinding functions. */
-
-/* Calculate the address encoded by a 31-bit self-relative offset at address
- P. */
-static inline _uw
-selfrel_offset31 (const _uw *p, pid_t pid)
-{
- _uw offset = get_remote_word(pid, (void*)p);
-
- //offset = *p;
- /* Sign extend to 32 bits. */
- if (offset & (1 << 30))
- offset |= 1u << 31;
- else
- offset &= ~(1u << 31);
-
- return offset + (_uw) p;
-}
-
-
-/* Perform a binary search for RETURN_ADDRESS in TABLE. The table contains
- NREC entries. */
-
-static const __EIT_entry *
-search_EIT_table (const __EIT_entry * table, int nrec, _uw return_address,
- pid_t pid)
-{
- _uw next_fn;
- _uw this_fn;
- int n, left, right;
-
- if (nrec == 0)
- return (__EIT_entry *) 0;
-
- left = 0;
- right = nrec - 1;
-
- while (1)
- {
- n = (left + right) / 2;
- this_fn = selfrel_offset31 (&table[n].fnoffset, pid);
- if (n != nrec - 1)
- next_fn = selfrel_offset31 (&table[n + 1].fnoffset, pid) - 1;
- else
- next_fn = (_uw)0 - 1;
-
- if (return_address < this_fn)
- {
- if (n == left)
- return (__EIT_entry *) 0;
- right = n - 1;
- }
- else if (return_address <= next_fn)
- return &table[n];
- else
- left = n + 1;
- }
-}
-
-/* Find the exception index table eintry for the given address. */
-static const __EIT_entry*
-get_eitp(_uw return_address, pid_t pid, mapinfo *map, mapinfo **containing_map)
-{
- const __EIT_entry *eitp = NULL;
- int nrec;
- mapinfo *mi;
-
- /* The return address is the address of the instruction following the
- call instruction (plus one in thumb mode). If this was the last
- instruction in the function the address will lie in the following
- function. Subtract 2 from the address so that it points within the call
- instruction itself. */
- if (return_address >= 2)
- return_address -= 2;
-
- for (mi = map; mi != NULL; mi = mi->next) {
- if (return_address >= mi->start && return_address <= mi->end) break;
- }
-
- if (mi) {
- if (containing_map) *containing_map = mi;
- eitp = (__EIT_entry *) mi->exidx_start;
- nrec = (mi->exidx_end - mi->exidx_start)/sizeof(__EIT_entry);
- eitp = search_EIT_table (eitp, nrec, return_address, pid);
- }
- return eitp;
-}
-
-/* Find the exception index table eintry for the given address.
- Fill in the relevant fields of the UCB.
- Returns _URC_FAILURE if an error occurred, _URC_OK on success. */
-
-static _Unwind_Reason_Code
-get_eit_entry (_Unwind_Control_Block *ucbp, _uw return_address, pid_t pid,
- mapinfo *map, mapinfo **containing_map)
-{
- const __EIT_entry *eitp;
-
- eitp = get_eitp(return_address, pid, map, containing_map);
-
- if (!eitp)
- {
- UCB_PR_ADDR (ucbp) = 0;
- return _URC_FAILURE;
- }
- ucbp->pr_cache.fnstart = selfrel_offset31 (&eitp->fnoffset, pid);
-
- _uw eitp_content = get_remote_word(pid, (void *)&eitp->content);
-
- /* Can this frame be unwound at all? */
- if (eitp_content == EXIDX_CANTUNWIND)
- {
- UCB_PR_ADDR (ucbp) = 0;
- return _URC_END_OF_STACK;
- }
-
- /* Obtain the address of the "real" __EHT_Header word. */
-
- if (eitp_content & uint32_highbit)
- {
- /* It is immediate data. */
- ucbp->pr_cache.ehtp = (_Unwind_EHT_Header *)&eitp->content;
- ucbp->pr_cache.additional = 1;
- }
- else
- {
- /* The low 31 bits of the content field are a self-relative
- offset to an _Unwind_EHT_Entry structure. */
- ucbp->pr_cache.ehtp =
- (_Unwind_EHT_Header *) selfrel_offset31 (&eitp->content, pid);
- ucbp->pr_cache.additional = 0;
- }
-
- /* Discover the personality routine address. */
- if (get_remote_word(pid, ucbp->pr_cache.ehtp) & (1u << 31))
- {
- /* One of the predefined standard routines. */
- _uw idx = (get_remote_word(pid, ucbp->pr_cache.ehtp) >> 24) & 0xf;
- if (idx == 0)
- UCB_PR_ADDR (ucbp) = (_uw) &unwind_cpp_pr0_with_ptrace;
- else if (idx == 1)
- UCB_PR_ADDR (ucbp) = (_uw) &unwind_cpp_pr1_with_ptrace;
- else if (idx == 2)
- UCB_PR_ADDR (ucbp) = (_uw) &unwind_cpp_pr2_with_ptrace;
- else
- { /* Failed */
- UCB_PR_ADDR (ucbp) = 0;
- return _URC_FAILURE;
- }
- }
- else
- {
- /* Execute region offset to PR */
- UCB_PR_ADDR (ucbp) = selfrel_offset31 (ucbp->pr_cache.ehtp, pid);
- /* Since we are unwinding the stack from a different process, it is
- * impossible to execute the personality routine in debuggerd. Punt here.
- */
- return _URC_FAILURE;
- }
- return _URC_OK;
-}
-
-/* Print out the current call level, pc, and module name in the crash log */
-static _Unwind_Reason_Code log_function(_Unwind_Context *context, pid_t pid,
- int tfd,
- int stack_level,
- mapinfo *map,
- unsigned int sp_list[],
- bool at_fault)
-{
- _uw pc;
- _uw rel_pc;
- phase2_vrs *vrs = (phase2_vrs*) context;
- const mapinfo *mi;
- bool only_in_tombstone = !at_fault;
- const struct symbol* sym = 0;
-
- if (stack_level < STACK_CONTENT_DEPTH) {
- sp_list[stack_level] = vrs->core.r[R_SP];
- }
- pc = vrs->core.r[R_PC];
-
- // Top level frame
- if (stack_level == 0) {
- pc &= ~1;
- }
- // For deeper framers, rollback pc by one instruction
- else {
- pc = vrs->core.r[R_PC];
- /* Thumb mode - need to check whether the bl(x) has long offset or not.
- * Examples:
- *
- * arm blx in the middle of thumb:
- * 187ae: 2300 movs r3, #0
- * 187b0: f7fe ee1c blx 173ec
- * 187b4: 2c00 cmp r4, #0
- *
- * arm bl in the middle of thumb:
- * 187d8: 1c20 adds r0, r4, #0
- * 187da: f136 fd15 bl 14f208
- * 187de: 2800 cmp r0, #0
- *
- * pure thumb:
- * 18894: 189b adds r3, r3, r2
- * 18896: 4798 blx r3
- * 18898: b001 add sp, #4
- */
- if (pc & 1) {
- _uw prev_word;
- pc = (pc & ~1);
- prev_word = get_remote_word(pid, (char *) pc-4);
- // Long offset
- if ((prev_word & 0xf0000000) == 0xf0000000 &&
- (prev_word & 0x0000e000) == 0x0000e000) {
- pc -= 4;
- }
- else {
- pc -= 2;
- }
- }
- else {
- pc -= 4;
- }
- }
-
- /* We used to print the absolute PC in the back trace, and mask out the top
- * 3 bits to guesstimate the offset in the .so file. This is not working for
- * non-prelinked libraries since the starting offset may not be aligned on
- * 1MB boundaries, and the library may be larger than 1MB. So for .so
- * addresses we print the relative offset in back trace.
- */
- mi = pc_to_mapinfo(map, pc, &rel_pc);
-
- /* See if we can determine what symbol this stack frame resides in */
- if (mi != 0 && mi->symbols != 0) {
- sym = symbol_table_lookup(mi->symbols, rel_pc);
- }
-
- if (sym) {
- _LOG(tfd, only_in_tombstone,
- " #%02d pc %08x %s (%s)\n", stack_level, rel_pc,
- mi ? mi->name : "", sym->name);
- } else {
- _LOG(tfd, only_in_tombstone,
- " #%02d pc %08x %s\n", stack_level, rel_pc,
- mi ? mi->name : "");
- }
-
- return _URC_NO_REASON;
-}
-
-/* Derived from __gnu_Unwind_Backtrace to use ptrace */
-/* Perform stack backtrace through unwind data. Return the level of stack it
- * unwinds.
- */
-int unwind_backtrace_with_ptrace(int tfd, pid_t pid, mapinfo *map,
- unsigned int sp_list[], int *frame0_pc_sane,
- bool at_fault)
-{
- phase1_vrs saved_vrs;
- _Unwind_Reason_Code code = _URC_OK;
- struct pt_regs r;
- int i;
- int stack_level = 0;
-
- _Unwind_Control_Block ucb;
- _Unwind_Control_Block *ucbp = &ucb;
-
- if(ptrace(PTRACE_GETREGS, pid, 0, &r)) return 0;
-
- for (i = 0; i < 16; i++) {
- saved_vrs.core.r[i] = r.uregs[i];
- /*
- _LOG(tfd, "r[%d] = 0x%x\n", i, saved_vrs.core.r[i]);
- */
- }
-
- /* Set demand-save flags. */
- saved_vrs.demand_save_flags = ~(_uw) 0;
-
- /*
- * If the app crashes because of calling the weeds, we cannot pass the PC
- * to the usual unwinding code as the EXIDX mapping will fail.
- * Instead, we simply print out the 0 as the top frame, and resume the
- * unwinding process with the value stored in LR.
- */
- if (get_eitp(saved_vrs.core.r[R_PC], pid, map, NULL) == NULL) {
- *frame0_pc_sane = 0;
- log_function ((_Unwind_Context *) &saved_vrs, pid, tfd, stack_level,
- map, sp_list, at_fault);
- saved_vrs.core.r[R_PC] = saved_vrs.core.r[R_LR];
- stack_level++;
- }
-
- do {
- mapinfo *this_map = NULL;
- /* Find the entry for this routine. */
- if (get_eit_entry(ucbp, saved_vrs.core.r[R_PC], pid, map, &this_map)
- != _URC_OK) {
- /* Uncomment the code below to study why the unwinder failed */
-#if 0
- /* Shed more debugging info for stack unwinder improvement */
- if (this_map) {
- _LOG(tfd, 1,
- "Relative PC=%#x from %s not contained in EXIDX\n",
- saved_vrs.core.r[R_PC] - this_map->start, this_map->name);
- }
- _LOG(tfd, 1, "PC=%#x SP=%#x\n",
- saved_vrs.core.r[R_PC], saved_vrs.core.r[R_SP]);
-#endif
- code = _URC_FAILURE;
- break;
- }
-
- /* The dwarf unwinder assumes the context structure holds things
- like the function and LSDA pointers. The ARM implementation
- caches these in the exception header (UCB). To avoid
- rewriting everything we make the virtual IP register point at
- the UCB. */
- _Unwind_SetGR((_Unwind_Context *)&saved_vrs, 12, (_Unwind_Ptr) ucbp);
-
- /* Call log function. */
- if (log_function ((_Unwind_Context *) &saved_vrs, pid, tfd, stack_level,
- map, sp_list, at_fault) != _URC_NO_REASON) {
- code = _URC_FAILURE;
- break;
- }
- stack_level++;
-
- /* Call the pr to decide what to do. */
- code = ((personality_routine_with_ptrace) UCB_PR_ADDR (ucbp))(
- _US_VIRTUAL_UNWIND_FRAME | _US_FORCE_UNWIND, ucbp,
- (void *) &saved_vrs, pid);
- /*
- * In theory the unwinding process will stop when the end of stack is
- * reached or there is no unwinding information for the code address.
- * To add another level of guarantee that the unwinding process
- * will terminate we will stop it when the STACK_CONTENT_DEPTH is reached.
- */
- } while (code != _URC_END_OF_STACK && code != _URC_FAILURE &&
- stack_level < STACK_CONTENT_DEPTH);
- return stack_level;
-}
-
-
-/* Derived version to use ptrace */
-/* Common implementation for ARM ABI defined personality routines.
- ID is the index of the personality routine, other arguments are as defined
- by __aeabi_unwind_cpp_pr{0,1,2}. */
-
-static _Unwind_Reason_Code
-unwind_pr_common_with_ptrace (_Unwind_State state,
- _Unwind_Control_Block *ucbp,
- _Unwind_Context *context,
- int id,
- pid_t pid)
-{
- __gnu_unwind_state uws;
- _uw *data;
- int phase2_call_unexpected_after_unwind = 0;
-
- state &= _US_ACTION_MASK;
-
- data = (_uw *) ucbp->pr_cache.ehtp;
- uws.data = get_remote_word(pid, data);
- data++;
- uws.next = data;
- if (id == 0)
- {
- uws.data <<= 8;
- uws.words_left = 0;
- uws.bytes_left = 3;
- }
- else
- {
- uws.words_left = (uws.data >> 16) & 0xff;
- uws.data <<= 16;
- uws.bytes_left = 2;
- data += uws.words_left;
- }
-
- /* Restore the saved pointer. */
- if (state == _US_UNWIND_FRAME_RESUME)
- data = (_uw *) ucbp->cleanup_cache.bitpattern[0];
-
- if ((ucbp->pr_cache.additional & 1) == 0)
- {
- /* Process descriptors. */
- while (get_remote_word(pid, data)) {
- /**********************************************************************
- * The original code here seems to deal with exceptions that are not
- * applicable in our toolchain, thus there is no way to test it for now.
- * Instead of leaving it here and causing potential instability in
- * debuggerd, we'd better punt here and leave the stack unwound.
- * In the future when we discover cases where the stack should be unwound
- * further but is not, we can revisit the code here.
- **********************************************************************/
- return _URC_FAILURE;
- }
- /* Finished processing this descriptor. */
- }
-
- if (unwind_execute_with_ptrace (context, &uws, pid) != _URC_OK)
- return _URC_FAILURE;
-
- if (phase2_call_unexpected_after_unwind)
- {
- /* Enter __cxa_unexpected as if called from the call site. */
- _Unwind_SetGR (context, R_LR, _Unwind_GetGR (context, R_PC));
- _Unwind_SetGR (context, R_PC, (_uw) &__cxa_call_unexpected);
- return _URC_INSTALL_CONTEXT;
- }
-
- return _URC_CONTINUE_UNWIND;
-}
-
-
-/* ABI defined personality routine entry points. */
-
-static _Unwind_Reason_Code
-unwind_cpp_pr0_with_ptrace (_Unwind_State state,
- _Unwind_Control_Block *ucbp,
- _Unwind_Context *context,
- pid_t pid)
-{
- return unwind_pr_common_with_ptrace (state, ucbp, context, 0, pid);
-}
-
-static _Unwind_Reason_Code
-unwind_cpp_pr1_with_ptrace (_Unwind_State state,
- _Unwind_Control_Block *ucbp,
- _Unwind_Context *context,
- pid_t pid)
-{
- return unwind_pr_common_with_ptrace (state, ucbp, context, 1, pid);
-}
-
-static _Unwind_Reason_Code
-unwind_cpp_pr2_with_ptrace (_Unwind_State state,
- _Unwind_Control_Block *ucbp,
- _Unwind_Context *context,
- pid_t pid)
-{
- return unwind_pr_common_with_ptrace (state, ucbp, context, 2, pid);
-}
diff --git a/debuggerd/debuggerd.c b/debuggerd/debuggerd.c
index 2acf26d..0f05bfd 100644
--- a/debuggerd/debuggerd.c
+++ b/debuggerd/debuggerd.c
@@ -28,83 +28,26 @@
#include <sys/wait.h>
#include <sys/exec_elf.h>
#include <sys/stat.h>
+#include <sys/poll.h>
#include <cutils/sockets.h>
#include <cutils/logd.h>
#include <cutils/logger.h>
#include <cutils/properties.h>
+#include <corkscrew/backtrace.h>
+
#include <linux/input.h>
#include <private/android_filesystem_config.h>
-#include "debuggerd.h"
+#include "getevent.h"
+#include "machine.h"
#include "utility.h"
#define ANDROID_LOG_INFO 4
-void _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...)
- __attribute__ ((format(printf, 3, 4)));
-
-/* Log information onto the tombstone */
-void _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...)
-{
- char buf[512];
-
- va_list ap;
- va_start(ap, fmt);
-
- if (tfd >= 0) {
- int len;
- vsnprintf(buf, sizeof(buf), fmt, ap);
- len = strlen(buf);
- if(tfd >= 0) write(tfd, buf, len);
- }
-
- if (!in_tombstone_only)
- __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap);
- va_end(ap);
-}
-
-// 6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /system/lib/libcomposer.so
-// 012345678901234567890123456789012345678901234567890123456789
-// 0 1 2 3 4 5
-
-mapinfo *parse_maps_line(char *line)
-{
- mapinfo *mi;
- int len = strlen(line);
-
- if (len < 1) return 0; /* not expected */
- line[--len] = 0;
-
- if (len < 50) {
- mi = malloc(sizeof(mapinfo) + 1);
- } else {
- mi = malloc(sizeof(mapinfo) + (len - 47));
- }
- if (mi == 0) return 0;
-
- mi->isExecutable = (line[20] == 'x');
-
- mi->start = strtoul(line, 0, 16);
- mi->end = strtoul(line + 9, 0, 16);
- /* To be filled in parse_elf_info if the mapped section starts with
- * elf_header
- */
- mi->exidx_start = mi->exidx_end = 0;
- mi->symbols = 0;
- mi->next = 0;
- if (len < 50) {
- mi->name[0] = '\0';
- } else {
- strcpy(mi->name, line + 49);
- }
-
- return mi;
-}
-
-void dump_build_info(int tfd)
+static void dump_build_info(int tfd)
{
char fingerprint[PROPERTY_VALUE_MAX];
@@ -113,7 +56,7 @@
_LOG(tfd, false, "Build fingerprint: '%s'\n", fingerprint);
}
-const char *get_signame(int sig)
+static const char *get_signame(int sig)
{
switch(sig) {
case SIGILL: return "SIGILL";
@@ -122,11 +65,12 @@
case SIGFPE: return "SIGFPE";
case SIGSEGV: return "SIGSEGV";
case SIGSTKFLT: return "SIGSTKFLT";
+ case SIGSTOP: return "SIGSTOP";
default: return "?";
}
}
-const char *get_sigcode(int signo, int code)
+static const char *get_sigcode(int signo, int code)
{
switch (signo) {
case SIGILL:
@@ -170,12 +114,12 @@
return "?";
}
-void dump_fault_addr(int tfd, int pid, int sig)
+static void dump_fault_addr(int tfd, pid_t tid, int sig)
{
siginfo_t si;
memset(&si, 0, sizeof(si));
- if(ptrace(PTRACE_GETSIGINFO, pid, 0, &si)){
+ if(ptrace(PTRACE_GETSIGINFO, tid, 0, &si)){
_LOG(tfd, false, "cannot get siginfo: %s\n", strerror(errno));
} else if (signal_has_address(sig)) {
_LOG(tfd, false, "signal %d (%s), code %d (%s), fault addr %08x\n",
@@ -188,7 +132,7 @@
}
}
-void dump_crash_banner(int tfd, unsigned pid, unsigned tid, int sig)
+static void dump_crash_banner(int tfd, pid_t pid, pid_t tid, int sig)
{
char data[1024];
char *x = 0;
@@ -202,225 +146,62 @@
}
_LOG(tfd, false,
- "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
+ "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
dump_build_info(tfd);
_LOG(tfd, false, "pid: %d, tid: %d >>> %s <<<\n",
pid, tid, x ? x : "UNKNOWN");
- if(sig) dump_fault_addr(tfd, tid, sig);
-}
-
-static void parse_elf_info(mapinfo *milist, pid_t pid)
-{
- mapinfo *mi;
- for (mi = milist; mi != NULL; mi = mi->next) {
- if (!mi->isExecutable)
- continue;
-
- Elf32_Ehdr ehdr;
-
- memset(&ehdr, 0, sizeof(Elf32_Ehdr));
- /* Read in sizeof(Elf32_Ehdr) worth of data from the beginning of
- * mapped section.
- */
- get_remote_struct(pid, (void *) (mi->start), &ehdr,
- sizeof(Elf32_Ehdr));
- /* Check if it has the matching magic words */
- if (IS_ELF(ehdr)) {
- Elf32_Phdr phdr;
- Elf32_Phdr *ptr;
- int i;
-
- ptr = (Elf32_Phdr *) (mi->start + ehdr.e_phoff);
- for (i = 0; i < ehdr.e_phnum; i++) {
- /* Parse the program header */
- get_remote_struct(pid, (char *) (ptr+i), &phdr,
- sizeof(Elf32_Phdr));
-#ifdef __arm__
- /* Found a EXIDX segment? */
- if (phdr.p_type == PT_ARM_EXIDX) {
- mi->exidx_start = mi->start + phdr.p_offset;
- mi->exidx_end = mi->exidx_start + phdr.p_filesz;
- break;
- }
-#endif
- }
-
- /* Try to load symbols from this file */
- mi->symbols = symbol_table_create(mi->name);
- }
+ if(sig) {
+ dump_fault_addr(tfd, tid, sig);
}
}
-void dump_crash_report(int tfd, unsigned pid, unsigned tid, bool at_fault)
-{
- char data[1024];
- FILE *fp;
- mapinfo *milist = 0;
- unsigned int sp_list[STACK_CONTENT_DEPTH];
- int stack_depth;
-#ifdef __arm__
- int frame0_pc_sane = 1;
-#endif
-
- if (!at_fault) {
- _LOG(tfd, true,
- "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n");
- _LOG(tfd, true, "pid: %d, tid: %d\n", pid, tid);
- }
-
- dump_registers(tfd, tid, at_fault);
-
- /* Clear stack pointer records */
- memset(sp_list, 0, sizeof(sp_list));
-
- sprintf(data, "/proc/%d/maps", pid);
- fp = fopen(data, "r");
- if(fp) {
- while(fgets(data, 1024, fp)) {
- mapinfo *mi = parse_maps_line(data);
- if(mi) {
- mi->next = milist;
- milist = mi;
- }
- }
- fclose(fp);
- }
-
- parse_elf_info(milist, tid);
-
-#if __arm__
- /* If stack unwinder fails, use the default solution to dump the stack
- * content.
- */
- stack_depth = unwind_backtrace_with_ptrace(tfd, tid, milist, sp_list,
- &frame0_pc_sane, at_fault);
-
- /* The stack unwinder should at least unwind two levels of stack. If less
- * level is seen we make sure at lease pc and lr are dumped.
- */
- if (stack_depth < 2) {
- dump_pc_and_lr(tfd, tid, milist, stack_depth, at_fault);
- }
-
- dump_stack_and_code(tfd, tid, milist, stack_depth, sp_list, at_fault);
-#elif __i386__
- /* If stack unwinder fails, use the default solution to dump the stack
- * content.
- */
- stack_depth = unwind_backtrace_with_ptrace_x86(tfd, tid, milist,at_fault);
-#else
-#error "Unsupported architecture"
-#endif
-
- while(milist) {
- mapinfo *next = milist->next;
- symbol_table_free(milist->symbols);
- free(milist);
- milist = next;
- }
-}
-
-#define MAX_TOMBSTONES 10
-
-#define typecheck(x,y) { \
- typeof(x) __dummy1; \
- typeof(y) __dummy2; \
- (void)(&__dummy1 == &__dummy2); }
-
-#define TOMBSTONE_DIR "/data/tombstones"
-
-/*
- * find_and_open_tombstone - find an available tombstone slot, if any, of the
- * form tombstone_XX where XX is 00 to MAX_TOMBSTONES-1, inclusive. If no
- * file is available, we reuse the least-recently-modified file.
- */
-static int find_and_open_tombstone(void)
-{
- unsigned long mtime = ULONG_MAX;
- struct stat sb;
- char path[128];
- int fd, i, oldest = 0;
-
- /*
- * XXX: Our stat.st_mtime isn't time_t. If it changes, as it probably ought
- * to, our logic breaks. This check will generate a warning if that happens.
- */
- typecheck(mtime, sb.st_mtime);
-
- /*
- * In a single wolf-like pass, find an available slot and, in case none
- * exist, find and record the least-recently-modified file.
- */
- for (i = 0; i < MAX_TOMBSTONES; i++) {
- snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", i);
-
- if (!stat(path, &sb)) {
- if (sb.st_mtime < mtime) {
- oldest = i;
- mtime = sb.st_mtime;
- }
- continue;
- }
- if (errno != ENOENT)
- continue;
-
- fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0600);
- if (fd < 0)
- continue; /* raced ? */
-
- fchown(fd, AID_SYSTEM, AID_SYSTEM);
- return fd;
- }
-
- /* we didn't find an available file, so we clobber the oldest one */
- snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", oldest);
- fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
- fchown(fd, AID_SYSTEM, AID_SYSTEM);
-
- return fd;
-}
-
/* Return true if some thread is not detached cleanly */
-static bool dump_sibling_thread_report(int tfd, unsigned pid, unsigned tid)
-{
- char task_path[1024];
+static bool dump_sibling_thread_report(const ptrace_context_t* context,
+ int tfd, pid_t pid, pid_t tid) {
+ char task_path[64];
+ snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
- sprintf(task_path, "/proc/%d/task", pid);
- DIR *d;
- struct dirent *de;
- int need_cleanup = 0;
-
- d = opendir(task_path);
+ DIR* d = opendir(task_path);
/* Bail early if cannot open the task directory */
if (d == NULL) {
XLOG("Cannot open /proc/%d/task\n", pid);
return false;
}
+
+ bool detach_failed = false;
+ struct dirent *de;
while ((de = readdir(d)) != NULL) {
- unsigned new_tid;
+ pid_t new_tid;
/* Ignore "." and ".." */
- if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, ".."))
+ if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
continue;
+ }
+
new_tid = atoi(de->d_name);
/* The main thread at fault has been handled individually */
- if (new_tid == tid)
+ if (new_tid == tid) {
continue;
+ }
/* Skip this thread if cannot ptrace it */
- if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0)
+ if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) {
continue;
+ }
- dump_crash_report(tfd, pid, new_tid, false);
+ _LOG(tfd, true, "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n");
+ _LOG(tfd, true, "pid: %d, tid: %d\n", pid, new_tid);
+
+ dump_thread(context, tfd, new_tid, false);
if (ptrace(PTRACE_DETACH, new_tid, 0, 0) != 0) {
- XLOG("detach of tid %d failed: %s\n", new_tid, strerror(errno));
- need_cleanup = 1;
+ LOG("ptrace detach from %d failed: %s\n", new_tid, strerror(errno));
+ detach_failed = true;
}
}
- closedir(d);
- return need_cleanup != 0;
+ closedir(d);
+ return detach_failed;
}
/*
@@ -429,7 +210,7 @@
*
* If "tailOnly" is set, we only print the last few lines.
*/
-static void dump_log_file(int tfd, unsigned pid, const char* filename,
+static void dump_log_file(int tfd, pid_t pid, const char* filename,
bool tailOnly)
{
bool first = true;
@@ -561,52 +342,129 @@
* Dumps the logs generated by the specified pid to the tombstone, from both
* "system" and "main" log devices. Ideally we'd interleave the output.
*/
-static void dump_logs(int tfd, unsigned pid, bool tailOnly)
+static void dump_logs(int tfd, pid_t pid, bool tailOnly)
{
dump_log_file(tfd, pid, "/dev/log/system", tailOnly);
dump_log_file(tfd, pid, "/dev/log/main", tailOnly);
}
-/* Return true if some thread is not detached cleanly */
-static bool engrave_tombstone(unsigned pid, unsigned tid, int debug_uid,
- int signal)
+/*
+ * Dumps all information about the specified pid to the tombstone.
+ */
+static bool dump_crash(int tfd, pid_t pid, pid_t tid, int signal,
+ bool dump_sibling_threads)
{
- int fd;
- bool need_cleanup = false;
-
/* don't copy log messages to tombstone unless this is a dev device */
char value[PROPERTY_VALUE_MAX];
property_get("ro.debuggable", value, "0");
bool wantLogs = (value[0] == '1');
+ dump_crash_banner(tfd, pid, tid, signal);
+
+ ptrace_context_t* context = load_ptrace_context(tid);
+
+ dump_thread(context, tfd, tid, true);
+
+ if (wantLogs) {
+ dump_logs(tfd, pid, true);
+ }
+
+ bool detach_failed = false;
+ if (dump_sibling_threads) {
+ detach_failed = dump_sibling_thread_report(context, tfd, pid, tid);
+ }
+
+ free_ptrace_context(context);
+
+ if (wantLogs) {
+ dump_logs(tfd, pid, false);
+ }
+ return detach_failed;
+}
+
+#define MAX_TOMBSTONES 10
+
+#define typecheck(x,y) { \
+ typeof(x) __dummy1; \
+ typeof(y) __dummy2; \
+ (void)(&__dummy1 == &__dummy2); }
+
+#define TOMBSTONE_DIR "/data/tombstones"
+
+/*
+ * find_and_open_tombstone - find an available tombstone slot, if any, of the
+ * form tombstone_XX where XX is 00 to MAX_TOMBSTONES-1, inclusive. If no
+ * file is available, we reuse the least-recently-modified file.
+ *
+ * Returns the path of the tombstone file, allocated using malloc(). Caller must free() it.
+ */
+static char* find_and_open_tombstone(int* fd)
+{
+ unsigned long mtime = ULONG_MAX;
+ struct stat sb;
+
+ /*
+ * XXX: Our stat.st_mtime isn't time_t. If it changes, as it probably ought
+ * to, our logic breaks. This check will generate a warning if that happens.
+ */
+ typecheck(mtime, sb.st_mtime);
+
+ /*
+ * In a single wolf-like pass, find an available slot and, in case none
+ * exist, find and record the least-recently-modified file.
+ */
+ char path[128];
+ int oldest = 0;
+ for (int i = 0; i < MAX_TOMBSTONES; i++) {
+ snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", i);
+
+ if (!stat(path, &sb)) {
+ if (sb.st_mtime < mtime) {
+ oldest = i;
+ mtime = sb.st_mtime;
+ }
+ continue;
+ }
+ if (errno != ENOENT)
+ continue;
+
+ *fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0600);
+ if (*fd < 0)
+ continue; /* raced ? */
+
+ fchown(*fd, AID_SYSTEM, AID_SYSTEM);
+ return strdup(path);
+ }
+
+ /* we didn't find an available file, so we clobber the oldest one */
+ snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", oldest);
+ *fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
+ if (*fd < 0) {
+ LOG("failed to open tombstone file '%s': %s\n", path, strerror(errno));
+ return NULL;
+ }
+ fchown(*fd, AID_SYSTEM, AID_SYSTEM);
+ return strdup(path);
+}
+
+/* Return true if some thread is not detached cleanly */
+static char* engrave_tombstone(pid_t pid, pid_t tid, int signal, bool dump_sibling_threads,
+ bool* detach_failed)
+{
mkdir(TOMBSTONE_DIR, 0755);
chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM);
- fd = find_and_open_tombstone();
- if (fd < 0)
- return need_cleanup;
-
- dump_crash_banner(fd, pid, tid, signal);
- dump_crash_report(fd, pid, tid, true);
-
- if (wantLogs) {
- dump_logs(fd, pid, true);
+ int fd;
+ char* path = find_and_open_tombstone(&fd);
+ if (!path) {
+ *detach_failed = false;
+ return NULL;
}
- /*
- * If the user has requested to attach gdb, don't collect the per-thread
- * information as it increases the chance to lose track of the process.
- */
- if ((signed)pid > debug_uid) {
- need_cleanup = dump_sibling_thread_report(fd, pid, tid);
- }
-
- if (wantLogs) {
- dump_logs(fd, pid, false);
- }
+ *detach_failed = dump_crash(fd, pid, tid, signal, dump_sibling_threads);
close(fd);
- return need_cleanup;
+ return path;
}
static int
@@ -654,25 +512,21 @@
write_string("/sys/class/leds/left/cadence", "0,0");
}
-extern int init_getevent();
-extern void uninit_getevent();
-extern int get_event(struct input_event* event, int timeout);
-
-static void wait_for_user_action(unsigned tid, struct ucred* cr)
-{
- (void)tid;
+static void wait_for_user_action(pid_t pid) {
/* First log a helpful message */
LOG( "********************************************************\n"
"* Process %d has been suspended while crashing. To\n"
- "* attach gdbserver for a gdb connection on port 5039:\n"
+ "* attach gdbserver for a gdb connection on port 5039\n"
+ "* and start gdbclient:\n"
"*\n"
- "* adb shell gdbserver :5039 --attach %d &\n"
+ "* gdbclient app_process :5039 %d\n"
"*\n"
- "* Press HOME key to let the process continue crashing.\n"
+ "* Wait for gdb to start, then press HOME or VOLUME DOWN key\n"
+ "* to let the process continue crashing.\n"
"********************************************************\n",
- cr->pid, cr->pid);
+ pid, pid);
- /* wait for HOME key (TODO: something useful for devices w/o HOME key) */
+ /* wait for HOME or VOLUME DOWN key */
if (init_getevent() == 0) {
int ms = 1200 / 10;
int dit = 1;
@@ -685,15 +539,18 @@
};
size_t s = 0;
struct input_event e;
- int home = 0;
+ bool done = false;
init_debug_led();
enable_debug_led();
do {
int timeout = abs((int)(codes[s])) * ms;
int res = get_event(&e, timeout);
if (res == 0) {
- if (e.type==EV_KEY && e.code==KEY_HOME && e.value==0)
- home = 1;
+ if (e.type == EV_KEY
+ && (e.code == KEY_HOME || e.code == KEY_VOLUMEDOWN)
+ && e.value == 0) {
+ done = true;
+ }
} else if (res == 1) {
if (++s >= sizeof(codes)/sizeof(*codes))
s = 0;
@@ -703,202 +560,294 @@
disable_debug_led();
}
}
- } while (!home);
+ } while (!done);
uninit_getevent();
}
/* don't forget to turn debug led off */
disable_debug_led();
+ LOG("debuggerd resuming process %d", pid);
+}
- /* close filedescriptor */
- LOG("debuggerd resuming process %d", cr->pid);
- }
+static int get_process_info(pid_t tid, pid_t* out_pid, uid_t* out_uid, uid_t* out_gid) {
+ char path[64];
+ snprintf(path, sizeof(path), "/proc/%d/status", tid);
-static void handle_crashing_process(int fd)
-{
- char buf[64];
- struct stat s;
- unsigned tid;
+ FILE* fp = fopen(path, "r");
+ if (!fp) {
+ return -1;
+ }
+
+ int fields = 0;
+ char line[1024];
+ while (fgets(line, sizeof(line), fp)) {
+ size_t len = strlen(line);
+ if (len > 6 && !memcmp(line, "Tgid:\t", 6)) {
+ *out_pid = atoi(line + 6);
+ fields |= 1;
+ } else if (len > 5 && !memcmp(line, "Uid:\t", 5)) {
+ *out_uid = atoi(line + 5);
+ fields |= 2;
+ } else if (len > 5 && !memcmp(line, "Gid:\t", 5)) {
+ *out_gid = atoi(line + 5);
+ fields |= 4;
+ }
+ }
+ fclose(fp);
+ return fields == 7 ? 0 : -1;
+}
+
+static int wait_for_signal(pid_t tid, int* total_sleep_time_usec) {
+ const int sleep_time_usec = 200000; /* 0.2 seconds */
+ const int max_total_sleep_usec = 3000000; /* 3 seconds */
+ for (;;) {
+ int status;
+ pid_t n = waitpid(tid, &status, __WALL | WNOHANG);
+ if (n < 0) {
+ if(errno == EAGAIN) continue;
+ LOG("waitpid failed: %s\n", strerror(errno));
+ return -1;
+ } else if (n > 0) {
+ XLOG("waitpid: n=%d status=%08x\n", n, status);
+ if (WIFSTOPPED(status)) {
+ return WSTOPSIG(status);
+ } else {
+ LOG("unexpected waitpid response: n=%d, status=%08x\n", n, status);
+ return -1;
+ }
+ }
+
+ if (*total_sleep_time_usec > max_total_sleep_usec) {
+ LOG("timed out waiting for tid=%d to die\n", tid);
+ return -1;
+ }
+
+ /* not ready yet */
+ XLOG("not ready yet\n");
+ usleep(sleep_time_usec);
+ *total_sleep_time_usec += sleep_time_usec;
+ }
+}
+
+enum {
+ REQUEST_TYPE_CRASH,
+ REQUEST_TYPE_DUMP,
+};
+
+typedef struct {
+ int type;
+ pid_t pid, tid;
+ uid_t uid, gid;
+} request_t;
+
+static int read_request(int fd, request_t* out_request) {
struct ucred cr;
- int n, len, status;
- int tid_attach_status = -1;
- unsigned retry = 30;
- bool need_cleanup = false;
-
- char value[PROPERTY_VALUE_MAX];
- property_get("debug.db.uid", value, "-1");
- int debug_uid = atoi(value);
-
- XLOG("handle_crashing_process(%d)\n", fd);
-
- len = sizeof(cr);
- n = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
- if(n != 0) {
+ int len = sizeof(cr);
+ int status = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
+ if (status != 0) {
LOG("cannot get credentials\n");
- goto done;
+ return -1;
}
XLOG("reading tid\n");
fcntl(fd, F_SETFL, O_NONBLOCK);
- while((n = read(fd, &tid, sizeof(unsigned))) != sizeof(unsigned)) {
- if(errno == EINTR) continue;
- if(errno == EWOULDBLOCK) {
- if(retry-- > 0) {
- usleep(100 * 1000);
- continue;
- }
- LOG("timed out reading tid\n");
- goto done;
- }
- LOG("read failure? %s\n", strerror(errno));
- goto done;
+
+ struct pollfd pollfds[1];
+ pollfds[0].fd = fd;
+ pollfds[0].events = POLLIN;
+ pollfds[0].revents = 0;
+ status = TEMP_FAILURE_RETRY(poll(pollfds, 1, 3000));
+ if (status != 1) {
+ LOG("timed out reading tid\n");
+ return -1;
}
- snprintf(buf, sizeof buf, "/proc/%d/task/%d", cr.pid, tid);
+ status = TEMP_FAILURE_RETRY(read(fd, &out_request->tid, sizeof(pid_t)));
+ if (status < 0) {
+ LOG("read failure? %s\n", strerror(errno));
+ return -1;
+ }
+ if (status != sizeof(pid_t)) {
+ LOG("invalid crash request of size %d\n", status);
+ return -1;
+ }
+
+ if (out_request->tid < 0 && cr.uid == 0) {
+ /* Root can ask us to attach to any process and dump it explicitly. */
+ out_request->type = REQUEST_TYPE_DUMP;
+ out_request->tid = -out_request->tid;
+ status = get_process_info(out_request->tid, &out_request->pid,
+ &out_request->uid, &out_request->gid);
+ if (status < 0) {
+ LOG("tid %d does not exist. ignoring explicit dump request\n",
+ out_request->tid);
+ return -1;
+ }
+ return 0;
+ }
+
+ /* Ensure that the tid reported by the crashing process is valid. */
+ out_request->type = REQUEST_TYPE_CRASH;
+ out_request->pid = cr.pid;
+ out_request->uid = cr.uid;
+ out_request->gid = cr.gid;
+
+ char buf[64];
+ struct stat s;
+ snprintf(buf, sizeof buf, "/proc/%d/task/%d", out_request->pid, out_request->tid);
if(stat(buf, &s)) {
LOG("tid %d does not exist in pid %d. ignoring debug request\n",
- tid, cr.pid);
- close(fd);
- return;
+ out_request->tid, out_request->pid);
+ return -1;
}
-
- XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n", cr.pid, cr.uid, cr.gid, tid);
-
- /* Note that at this point, the target thread's signal handler
- * is blocked in a read() call. This gives us the time to PTRACE_ATTACH
- * to it before it has a chance to really fault.
- *
- * The PTRACE_ATTACH sends a SIGSTOP to the target process, but it
- * won't necessarily have stopped by the time ptrace() returns. (We
- * currently assume it does.) We write to the file descriptor to
- * ensure that it can run as soon as we call PTRACE_CONT below.
- * See details in bionic/libc/linker/debugger.c, in function
- * debugger_signal_handler().
- */
- tid_attach_status = ptrace(PTRACE_ATTACH, tid, 0, 0);
- int ptrace_error = errno;
-
- if (TEMP_FAILURE_RETRY(write(fd, &tid, 1)) != 1) {
- XLOG("failed responding to client: %s\n",
- strerror(errno));
- goto done;
- }
-
- if(tid_attach_status < 0) {
- LOG("ptrace attach failed: %s\n", strerror(ptrace_error));
- goto done;
- }
-
- close(fd);
- fd = -1;
-
- const int sleep_time_usec = 200000; /* 0.2 seconds */
- const int max_total_sleep_usec = 3000000; /* 3 seconds */
- int loop_limit = max_total_sleep_usec / sleep_time_usec;
- for(;;) {
- if (loop_limit-- == 0) {
- LOG("timed out waiting for pid=%d tid=%d uid=%d to die\n",
- cr.pid, tid, cr.uid);
- goto done;
- }
- n = waitpid(tid, &status, __WALL | WNOHANG);
-
- if (n == 0) {
- /* not ready yet */
- XLOG("not ready yet\n");
- usleep(sleep_time_usec);
- continue;
- }
-
- if(n < 0) {
- if(errno == EAGAIN) continue;
- LOG("waitpid failed: %s\n", strerror(errno));
- goto done;
- }
-
- XLOG("waitpid: n=%d status=%08x\n", n, status);
-
- if(WIFSTOPPED(status)){
- n = WSTOPSIG(status);
- switch(n) {
- case SIGSTOP:
- XLOG("stopped -- continuing\n");
- n = ptrace(PTRACE_CONT, tid, 0, 0);
- if(n) {
- LOG("ptrace failed: %s\n", strerror(errno));
- goto done;
- }
- continue;
-
- case SIGILL:
- case SIGABRT:
- case SIGBUS:
- case SIGFPE:
- case SIGSEGV:
- case SIGSTKFLT: {
- XLOG("stopped -- fatal signal\n");
- need_cleanup = engrave_tombstone(cr.pid, tid, debug_uid, n);
- kill(tid, SIGSTOP);
- goto done;
- }
-
- default:
- XLOG("stopped -- unexpected signal\n");
- goto done;
- }
- } else {
- XLOG("unexpected waitpid response\n");
- goto done;
- }
- }
-
-done:
- XLOG("detaching\n");
-
- /* stop the process so we can debug */
- kill(cr.pid, SIGSTOP);
-
- /*
- * If a thread has been attached by ptrace, make sure it is detached
- * successfully otherwise we will get a zombie.
- */
- if (tid_attach_status == 0) {
- int detach_status;
- /* detach so we can attach gdbserver */
- detach_status = ptrace(PTRACE_DETACH, tid, 0, 0);
- need_cleanup |= (detach_status != 0);
- }
-
- /*
- * if debug.db.uid is set, its value indicates if we should wait
- * for user action for the crashing process.
- * in this case, we log a message and turn the debug LED on
- * waiting for a gdb connection (for instance)
- */
-
- if ((signed)cr.uid <= debug_uid) {
- wait_for_user_action(tid, &cr);
- }
-
- /*
- * Resume stopped process (so it can crash in peace). If we didn't
- * successfully detach, we're still the parent, and the actual parent
- * won't receive a death notification via wait(2). At this point
- * there's not much we can do about that.
- */
- kill(cr.pid, SIGCONT);
-
- if (need_cleanup) {
- LOG("debuggerd committing suicide to free the zombie!\n");
- kill(getpid(), SIGKILL);
- }
-
- if(fd != -1) close(fd);
+ return 0;
}
+static bool should_attach_gdb(request_t* request) {
+ if (request->type == REQUEST_TYPE_CRASH) {
+ char value[PROPERTY_VALUE_MAX];
+ property_get("debug.db.uid", value, "-1");
+ int debug_uid = atoi(value);
+ return debug_uid >= 0 && request->uid <= (uid_t)debug_uid;
+ }
+ return false;
+}
-int main()
-{
+static void handle_request(int fd) {
+ XLOG("handle_request(%d)\n", fd);
+
+ request_t request;
+ int status = read_request(fd, &request);
+ if (!status) {
+ XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n", pid, uid, gid, tid);
+
+ /* At this point, the thread that made the request is blocked in
+ * a read() call. If the thread has crashed, then this gives us
+ * time to PTRACE_ATTACH to it before it has a chance to really fault.
+ *
+ * The PTRACE_ATTACH sends a SIGSTOP to the target process, but it
+ * won't necessarily have stopped by the time ptrace() returns. (We
+ * currently assume it does.) We write to the file descriptor to
+ * ensure that it can run as soon as we call PTRACE_CONT below.
+ * See details in bionic/libc/linker/debugger.c, in function
+ * debugger_signal_handler().
+ */
+ if (ptrace(PTRACE_ATTACH, request.tid, 0, 0)) {
+ LOG("ptrace attach failed: %s\n", strerror(errno));
+ } else {
+ bool detach_failed = false;
+ bool attach_gdb = should_attach_gdb(&request);
+ char response = 0;
+ if (TEMP_FAILURE_RETRY(write(fd, &response, 1)) != 1) {
+ LOG("failed responding to client: %s\n", strerror(errno));
+ } else {
+ char* tombstone_path = NULL;
+
+ if (request.type != REQUEST_TYPE_DUMP) {
+ close(fd);
+ fd = -1;
+ }
+
+ int total_sleep_time_usec = 0;
+ for (;;) {
+ int signal = wait_for_signal(request.tid, &total_sleep_time_usec);
+ if (signal < 0) {
+ break;
+ }
+
+ switch (signal) {
+ case SIGSTOP:
+ if (request.type == REQUEST_TYPE_DUMP) {
+ XLOG("stopped -- dumping\n");
+ tombstone_path = engrave_tombstone(request.pid, request.tid,
+ signal, true, &detach_failed);
+ } else {
+ XLOG("stopped -- continuing\n");
+ status = ptrace(PTRACE_CONT, request.tid, 0, 0);
+ if (status) {
+ LOG("ptrace continue failed: %s\n", strerror(errno));
+ }
+ continue; /* loop again */
+ }
+ break;
+
+ case SIGILL:
+ case SIGABRT:
+ case SIGBUS:
+ case SIGFPE:
+ case SIGSEGV:
+ case SIGSTKFLT: {
+ XLOG("stopped -- fatal signal\n");
+ /* don't dump sibling threads when attaching to GDB because it
+ * makes the process less reliable, apparently... */
+ tombstone_path = engrave_tombstone(request.pid, request.tid,
+ signal, !attach_gdb, &detach_failed);
+ break;
+ }
+
+ default:
+ XLOG("stopped -- unexpected signal\n");
+ LOG("process stopped due to unexpected signal %d\n", signal);
+ break;
+ }
+ break;
+ }
+
+ if (request.type == REQUEST_TYPE_DUMP) {
+ if (tombstone_path) {
+ write(fd, tombstone_path, strlen(tombstone_path));
+ }
+ close(fd);
+ fd = -1;
+ }
+ free(tombstone_path);
+ }
+
+ XLOG("detaching\n");
+ if (attach_gdb) {
+ /* stop the process so we can debug */
+ kill(request.pid, SIGSTOP);
+
+ /* detach so we can attach gdbserver */
+ if (ptrace(PTRACE_DETACH, request.tid, 0, 0)) {
+ LOG("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
+ detach_failed = true;
+ }
+
+ /*
+ * if debug.db.uid is set, its value indicates if we should wait
+ * for user action for the crashing process.
+ * in this case, we log a message and turn the debug LED on
+ * waiting for a gdb connection (for instance)
+ */
+ wait_for_user_action(request.pid);
+ } else {
+ /* just detach */
+ if (ptrace(PTRACE_DETACH, request.tid, 0, 0)) {
+ LOG("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
+ detach_failed = true;
+ }
+ }
+
+ /* resume stopped process (so it can crash in peace). */
+ kill(request.pid, SIGCONT);
+
+ /* If we didn't successfully detach, we're still the parent, and the
+ * actual parent won't receive a death notification via wait(2). At this point
+ * there's not much we can do about that. */
+ if (detach_failed) {
+ LOG("debuggerd committing suicide to free the zombie!\n");
+ kill(getpid(), SIGKILL);
+ }
+ }
+
+ }
+ if (fd >= 0) {
+ close(fd);
+ }
+}
+
+static int do_server() {
int s;
struct sigaction act;
int logsocket = -1;
@@ -931,7 +880,7 @@
s = socket_local_server("android:debuggerd",
ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
- if(s < 0) return -1;
+ if(s < 0) return 1;
fcntl(s, F_SETFD, FD_CLOEXEC);
LOG("debuggerd: " __DATE__ " " __TIME__ "\n");
@@ -951,7 +900,52 @@
fcntl(fd, F_SETFD, FD_CLOEXEC);
- handle_crashing_process(fd);
+ handle_request(fd);
}
return 0;
}
+
+static int do_explicit_dump(pid_t tid) {
+ fprintf(stdout, "Sending request to dump task %d.\n", tid);
+
+ int fd = socket_local_client("android:debuggerd",
+ ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
+ if (fd < 0) {
+ fputs("Error opening local socket to debuggerd.\n", stderr);
+ return 1;
+ }
+
+ pid_t request = -tid;
+ write(fd, &request, sizeof(pid_t));
+ if (read(fd, &request, 1) != 1) {
+ /* did not get expected reply, debuggerd must have closed the socket */
+ fputs("Error sending request. Did not receive reply from debuggerd.\n", stderr);
+ } else {
+ char tombstone_path[PATH_MAX];
+ ssize_t n = read(fd, &tombstone_path, sizeof(tombstone_path) - 1);
+ if (n <= 0) {
+ fputs("Error dumping process. Check log for details.\n", stderr);
+ } else {
+ tombstone_path[n] = '\0';
+ fprintf(stderr, "Tombstone written to: %s\n", tombstone_path);
+ }
+ }
+
+ close(fd);
+ return 0;
+}
+
+int main(int argc, char** argv) {
+ if (argc == 2) {
+ pid_t tid = atoi(argv[1]);
+ if (!tid) {
+ fputs("Usage: [<tid>]\n"
+ "\n"
+ "If tid specified, sends a request to debuggerd to dump that task.\n"
+ "Otherwise, starts the debuggerd server.\n", stderr);
+ return 1;
+ }
+ return do_explicit_dump(tid);
+ }
+ return do_server();
+}
diff --git a/debuggerd/debuggerd.h b/debuggerd/debuggerd.h
deleted file mode 100644
index e3cdc7c..0000000
--- a/debuggerd/debuggerd.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/* system/debuggerd/debuggerd.h
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <cutils/logd.h>
-#include <sys/ptrace.h>
-#include <unwind.h>
-#include "utility.h"
-#include "symbol_table.h"
-
-
-/* Main entry point to get the backtrace from the crashing process */
-extern int unwind_backtrace_with_ptrace(int tfd, pid_t pid, mapinfo *map,
- unsigned int sp_list[],
- int *frame0_pc_sane,
- bool at_fault);
-
-extern void dump_registers(int tfd, int pid, bool at_fault);
-
-extern int unwind_backtrace_with_ptrace_x86(int tfd, pid_t pid, mapinfo *map, bool at_fault);
-
-void dump_pc_and_lr(int tfd, int pid, mapinfo *map, int unwound_level, bool at_fault);
-
-void dump_stack_and_code(int tfd, int pid, mapinfo *map,
- int unwind_depth, unsigned int sp_list[],
- bool at_fault);
diff --git a/debuggerd/getevent.h b/debuggerd/getevent.h
new file mode 100644
index 0000000..426139d
--- /dev/null
+++ b/debuggerd/getevent.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _DEBUGGERD_GETEVENT_H
+#define _DEBUGGERD_GETEVENT_H
+
+int init_getevent();
+void uninit_getevent();
+int get_event(struct input_event* event, int timeout);
+
+#endif // _DEBUGGERD_GETEVENT_H
diff --git a/debuggerd/machine.h b/debuggerd/machine.h
new file mode 100644
index 0000000..6049b69
--- /dev/null
+++ b/debuggerd/machine.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _DEBUGGERD_MACHINE_H
+#define _DEBUGGERD_MACHINE_H
+
+#include <corkscrew/backtrace.h>
+#include <sys/types.h>
+
+void dump_thread(const ptrace_context_t* context, int tfd, pid_t tid, bool at_fault);
+
+#endif // _DEBUGGERD_MACHINE_H
diff --git a/debuggerd/symbol_table.c b/debuggerd/symbol_table.c
deleted file mode 100644
index 23572a3..0000000
--- a/debuggerd/symbol_table.c
+++ /dev/null
@@ -1,240 +0,0 @@
-#include <stdlib.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-
-#include "symbol_table.h"
-#include "utility.h"
-
-#include <linux/elf.h>
-
-// Compare func for qsort
-static int qcompar(const void *a, const void *b)
-{
- return ((struct symbol*)a)->addr - ((struct symbol*)b)->addr;
-}
-
-// Compare func for bsearch
-static int bcompar(const void *addr, const void *element)
-{
- struct symbol *symbol = (struct symbol*)element;
-
- if((unsigned int)addr < symbol->addr) {
- return -1;
- }
-
- if((unsigned int)addr - symbol->addr >= symbol->size) {
- return 1;
- }
-
- return 0;
-}
-
-/*
- * Create a symbol table from a given file
- *
- * Parameters:
- * filename - Filename to process
- *
- * Returns:
- * A newly-allocated SymbolTable structure, or NULL if error.
- * Free symbol table with symbol_table_free()
- */
-struct symbol_table *symbol_table_create(const char *filename)
-{
- struct symbol_table *table = NULL;
-
- // Open the file, and map it into memory
- struct stat sb;
- int length;
- char *base;
-
- XLOG2("Creating symbol table for %s\n", filename);
- int fd = open(filename, O_RDONLY);
-
- if(fd < 0) {
- goto out;
- }
-
- fstat(fd, &sb);
- length = sb.st_size;
-
- base = mmap(NULL, length, PROT_READ, MAP_PRIVATE, fd, 0);
-
- if(!base) {
- goto out_close;
- }
-
- // Parse the file header
- Elf32_Ehdr *hdr = (Elf32_Ehdr*)base;
- Elf32_Shdr *shdr = (Elf32_Shdr*)(base + hdr->e_shoff);
-
- // Search for the dynamic symbols section
- int sym_idx = -1;
- int dynsym_idx = -1;
- int i;
-
- for(i = 0; i < hdr->e_shnum; i++) {
- if(shdr[i].sh_type == SHT_SYMTAB ) {
- sym_idx = i;
- }
- if(shdr[i].sh_type == SHT_DYNSYM ) {
- dynsym_idx = i;
- }
- }
- if ((dynsym_idx == -1) && (sym_idx == -1)) {
- goto out_unmap;
- }
-
- table = malloc(sizeof(struct symbol_table));
- if(!table) {
- goto out_unmap;
- }
- table->name = strdup(filename);
- table->num_symbols = 0;
-
- Elf32_Sym *dynsyms = NULL;
- Elf32_Sym *syms = NULL;
- int dynnumsyms = 0;
- int numsyms = 0;
- char *dynstr = NULL;
- char *str = NULL;
-
- if (dynsym_idx != -1) {
- dynsyms = (Elf32_Sym*)(base + shdr[dynsym_idx].sh_offset);
- dynnumsyms = shdr[dynsym_idx].sh_size / shdr[dynsym_idx].sh_entsize;
- int dynstr_idx = shdr[dynsym_idx].sh_link;
- dynstr = base + shdr[dynstr_idx].sh_offset;
- }
-
- if (sym_idx != -1) {
- syms = (Elf32_Sym*)(base + shdr[sym_idx].sh_offset);
- numsyms = shdr[sym_idx].sh_size / shdr[sym_idx].sh_entsize;
- int str_idx = shdr[sym_idx].sh_link;
- str = base + shdr[str_idx].sh_offset;
- }
-
- int symbol_count = 0;
- int dynsymbol_count = 0;
-
- if (dynsym_idx != -1) {
- // Iterate through the dynamic symbol table, and count how many symbols
- // are actually defined
- for(i = 0; i < dynnumsyms; i++) {
- if(dynsyms[i].st_shndx != SHN_UNDEF) {
- dynsymbol_count++;
- }
- }
- XLOG2("Dynamic Symbol count: %d\n", dynsymbol_count);
- }
-
- if (sym_idx != -1) {
- // Iterate through the symbol table, and count how many symbols
- // are actually defined
- for(i = 0; i < numsyms; i++) {
- if((syms[i].st_shndx != SHN_UNDEF) &&
- (strlen(str+syms[i].st_name)) &&
- (syms[i].st_value != 0) && (syms[i].st_size != 0)) {
- symbol_count++;
- }
- }
- XLOG2("Symbol count: %d\n", symbol_count);
- }
-
- // Now, create an entry in our symbol table structure for each symbol...
- table->num_symbols += symbol_count + dynsymbol_count;
- table->symbols = malloc(table->num_symbols * sizeof(struct symbol));
- if(!table->symbols) {
- free(table);
- table = NULL;
- goto out_unmap;
- }
-
-
- int j = 0;
- if (dynsym_idx != -1) {
- // ...and populate them
- for(i = 0; i < dynnumsyms; i++) {
- if(dynsyms[i].st_shndx != SHN_UNDEF) {
- table->symbols[j].name = strdup(dynstr + dynsyms[i].st_name);
- table->symbols[j].addr = dynsyms[i].st_value;
- table->symbols[j].size = dynsyms[i].st_size;
- XLOG2("name: %s, addr: %x, size: %x\n",
- table->symbols[j].name, table->symbols[j].addr, table->symbols[j].size);
- j++;
- }
- }
- }
-
- if (sym_idx != -1) {
- // ...and populate them
- for(i = 0; i < numsyms; i++) {
- if((syms[i].st_shndx != SHN_UNDEF) &&
- (strlen(str+syms[i].st_name)) &&
- (syms[i].st_value != 0) && (syms[i].st_size != 0)) {
- table->symbols[j].name = strdup(str + syms[i].st_name);
- table->symbols[j].addr = syms[i].st_value;
- table->symbols[j].size = syms[i].st_size;
- XLOG2("name: %s, addr: %x, size: %x\n",
- table->symbols[j].name, table->symbols[j].addr, table->symbols[j].size);
- j++;
- }
- }
- }
-
- // Sort the symbol table entries, so they can be bsearched later
- qsort(table->symbols, table->num_symbols, sizeof(struct symbol), qcompar);
-
-out_unmap:
- munmap(base, length);
-
-out_close:
- close(fd);
-
-out:
- return table;
-}
-
-/*
- * Free a symbol table
- *
- * Parameters:
- * table - Table to free
- */
-void symbol_table_free(struct symbol_table *table)
-{
- int i;
-
- if(!table) {
- return;
- }
-
- for(i=0; i<table->num_symbols; i++) {
- free(table->symbols[i].name);
- }
-
- free(table->symbols);
- free(table);
-}
-
-/*
- * Search for an address in the symbol table
- *
- * Parameters:
- * table - Table to search in
- * addr - Address to search for.
- *
- * Returns:
- * A pointer to the Symbol structure corresponding to the
- * symbol which contains this address, or NULL if no symbol
- * contains it.
- */
-const struct symbol *symbol_table_lookup(struct symbol_table *table, unsigned int addr)
-{
- if(!table) {
- return NULL;
- }
-
- return bsearch((void*)addr, table->symbols, table->num_symbols, sizeof(struct symbol), bcompar);
-}
diff --git a/debuggerd/symbol_table.h b/debuggerd/symbol_table.h
deleted file mode 100644
index 7f41f91..0000000
--- a/debuggerd/symbol_table.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#ifndef SYMBOL_TABLE_H
-#define SYMBOL_TABLE_H
-
-struct symbol {
- unsigned int addr;
- unsigned int size;
- char *name;
-};
-
-struct symbol_table {
- struct symbol *symbols;
- int num_symbols;
- char *name;
-};
-
-struct symbol_table *symbol_table_create(const char *filename);
-void symbol_table_free(struct symbol_table *table);
-const struct symbol *symbol_table_lookup(struct symbol_table *table, unsigned int addr);
-
-#endif
diff --git a/debuggerd/utility.c b/debuggerd/utility.c
index 409209c..2ccf947 100644
--- a/debuggerd/utility.c
+++ b/debuggerd/utility.c
@@ -15,81 +15,37 @@
** limitations under the License.
*/
-#include <sys/ptrace.h>
-#include <sys/exec_elf.h>
#include <signal.h>
-#include <assert.h>
#include <string.h>
+#include <cutils/logd.h>
+#include <sys/ptrace.h>
#include <errno.h>
+#include <corkscrew/demangle.h>
#include "utility.h"
-/* Get a word from pid using ptrace. The result is the return value. */
-int get_remote_word(int pid, void *src)
-{
- return ptrace(PTRACE_PEEKTEXT, pid, src, NULL);
-}
+#define STACK_DEPTH 32
+#define STACK_WORDS 16
+void _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...) {
+ char buf[512];
-/* Handy routine to read aggregated data from pid using ptrace. The read
- * values are written to the dest locations directly.
- */
-void get_remote_struct(int pid, void *src, void *dst, size_t size)
-{
- unsigned int i;
+ va_list ap;
+ va_start(ap, fmt);
- for (i = 0; i+4 <= size; i+=4) {
- *(int *)((char *)dst+i) = ptrace(PTRACE_PEEKTEXT, pid, (char *)src+i, NULL);
+ if (tfd >= 0) {
+ int len;
+ vsnprintf(buf, sizeof(buf), fmt, ap);
+ len = strlen(buf);
+ if(tfd >= 0) write(tfd, buf, len);
}
- if (i < size) {
- int val;
-
- assert((size - i) < 4);
- val = ptrace(PTRACE_PEEKTEXT, pid, (char *)src+i, NULL);
- while (i < size) {
- ((unsigned char *)dst)[i] = val & 0xff;
- i++;
- val >>= 8;
- }
- }
+ if (!in_tombstone_only)
+ __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap);
+ va_end(ap);
}
-/* Map a pc address to the name of the containing ELF file */
-const char *map_to_name(mapinfo *mi, unsigned pc, const char* def)
-{
- while(mi) {
- if((pc >= mi->start) && (pc < mi->end)){
- return mi->name;
- }
- mi = mi->next;
- }
- return def;
-}
-
-/* Find the containing map info for the pc */
-const mapinfo *pc_to_mapinfo(mapinfo *mi, unsigned pc, unsigned *rel_pc)
-{
- *rel_pc = pc;
- while(mi) {
- if((pc >= mi->start) && (pc < mi->end)){
- // Only calculate the relative offset for shared libraries
- if (strstr(mi->name, ".so")) {
- *rel_pc -= mi->start;
- }
- return mi;
- }
- mi = mi->next;
- }
- return NULL;
-}
-
-/*
- * Returns true if the specified signal has an associated address (i.e. it
- * sets siginfo_t.si_addr).
- */
-bool signal_has_address(int sig)
-{
+bool signal_has_address(int sig) {
switch (sig) {
case SIGILL:
case SIGFPE:
@@ -100,3 +56,254 @@
return false;
}
}
+
+static void dump_backtrace(const ptrace_context_t* context __attribute((unused)),
+ int tfd, pid_t tid __attribute((unused)), bool at_fault,
+ const backtrace_frame_t* backtrace, size_t frames) {
+ _LOG(tfd, !at_fault, "\nbacktrace:\n");
+
+ backtrace_symbol_t backtrace_symbols[STACK_DEPTH];
+ get_backtrace_symbols_ptrace(context, backtrace, frames, backtrace_symbols);
+ for (size_t i = 0; i < frames; i++) {
+ char line[MAX_BACKTRACE_LINE_LENGTH];
+ format_backtrace_line(i, &backtrace[i], &backtrace_symbols[i],
+ line, MAX_BACKTRACE_LINE_LENGTH);
+ _LOG(tfd, !at_fault, " %s\n", line);
+ }
+ free_backtrace_symbols(backtrace_symbols, frames);
+}
+
+static void dump_stack_segment(const ptrace_context_t* context, int tfd, pid_t tid,
+ bool only_in_tombstone, uintptr_t* sp, size_t words, int label) {
+ for (size_t i = 0; i < words; i++) {
+ uint32_t stack_content;
+ if (!try_get_word_ptrace(tid, *sp, &stack_content)) {
+ break;
+ }
+
+ const map_info_t* mi;
+ const symbol_t* symbol;
+ find_symbol_ptrace(context, stack_content, &mi, &symbol);
+
+ if (symbol) {
+ char* demangled_name = demangle_symbol_name(symbol->name);
+ const char* symbol_name = demangled_name ? demangled_name : symbol->name;
+ uint32_t offset = stack_content - (mi->start + symbol->start);
+ if (!i && label >= 0) {
+ if (offset) {
+ _LOG(tfd, only_in_tombstone, " #%02d %08x %08x %s (%s+%u)\n",
+ label, *sp, stack_content, mi ? mi->name : "", symbol_name, offset);
+ } else {
+ _LOG(tfd, only_in_tombstone, " #%02d %08x %08x %s (%s)\n",
+ label, *sp, stack_content, mi ? mi->name : "", symbol_name);
+ }
+ } else {
+ if (offset) {
+ _LOG(tfd, only_in_tombstone, " %08x %08x %s (%s+%u)\n",
+ *sp, stack_content, mi ? mi->name : "", symbol_name, offset);
+ } else {
+ _LOG(tfd, only_in_tombstone, " %08x %08x %s (%s)\n",
+ *sp, stack_content, mi ? mi->name : "", symbol_name);
+ }
+ }
+ free(demangled_name);
+ } else {
+ if (!i && label >= 0) {
+ _LOG(tfd, only_in_tombstone, " #%02d %08x %08x %s\n",
+ label, *sp, stack_content, mi ? mi->name : "");
+ } else {
+ _LOG(tfd, only_in_tombstone, " %08x %08x %s\n",
+ *sp, stack_content, mi ? mi->name : "");
+ }
+ }
+
+ *sp += sizeof(uint32_t);
+ }
+}
+
+static void dump_stack(const ptrace_context_t* context, int tfd, pid_t tid, bool at_fault,
+ const backtrace_frame_t* backtrace, size_t frames) {
+ bool have_first = false;
+ size_t first, last;
+ for (size_t i = 0; i < frames; i++) {
+ if (backtrace[i].stack_top) {
+ if (!have_first) {
+ have_first = true;
+ first = i;
+ }
+ last = i;
+ }
+ }
+ if (!have_first) {
+ return;
+ }
+
+ _LOG(tfd, !at_fault, "\nstack:\n");
+
+ // Dump a few words before the first frame.
+ bool only_in_tombstone = !at_fault;
+ uintptr_t sp = backtrace[first].stack_top - STACK_WORDS * sizeof(uint32_t);
+ dump_stack_segment(context, tfd, tid, only_in_tombstone, &sp, STACK_WORDS, -1);
+
+ // Dump a few words from all successive frames.
+ // Only log the first 3 frames, put the rest in the tombstone.
+ for (size_t i = first; i <= last; i++) {
+ const backtrace_frame_t* frame = &backtrace[i];
+ if (sp != frame->stack_top) {
+ _LOG(tfd, only_in_tombstone, " ........ ........\n");
+ sp = frame->stack_top;
+ }
+ if (i - first == 3) {
+ only_in_tombstone = true;
+ }
+ if (i == last) {
+ dump_stack_segment(context, tfd, tid, only_in_tombstone, &sp, STACK_WORDS, i);
+ if (sp < frame->stack_top + frame->stack_size) {
+ _LOG(tfd, only_in_tombstone, " ........ ........\n");
+ }
+ } else {
+ size_t words = frame->stack_size / sizeof(uint32_t);
+ if (words == 0) {
+ words = 1;
+ } else if (words > STACK_WORDS) {
+ words = STACK_WORDS;
+ }
+ dump_stack_segment(context, tfd, tid, only_in_tombstone, &sp, words, i);
+ }
+ }
+}
+
+void dump_backtrace_and_stack(const ptrace_context_t* context, int tfd, pid_t tid,
+ bool at_fault) {
+ backtrace_frame_t backtrace[STACK_DEPTH];
+ ssize_t frames = unwind_backtrace_ptrace(tid, context, backtrace, 0, STACK_DEPTH);
+ if (frames > 0) {
+ dump_backtrace(context, tfd, tid, at_fault, backtrace, frames);
+ dump_stack(context, tfd, tid, at_fault, backtrace, frames);
+ }
+}
+
+void dump_memory(int tfd, pid_t tid, uintptr_t addr, bool at_fault) {
+ char code_buffer[64]; /* actual 8+1+((8+1)*4) + 1 == 45 */
+ char ascii_buffer[32]; /* actual 16 + 1 == 17 */
+ uintptr_t p, end;
+
+ p = addr & ~3;
+ p -= 32;
+ if (p > addr) {
+ /* catch underflow */
+ p = 0;
+ }
+ end = p + 80;
+ /* catch overflow; 'end - p' has to be multiples of 16 */
+ while (end < p)
+ end -= 16;
+
+ /* Dump the code around PC as:
+ * addr contents ascii
+ * 00008d34 ef000000 e8bd0090 e1b00000 512fff1e ............../Q
+ * 00008d44 ea00b1f9 e92d0090 e3a070fc ef000000 ......-..p......
+ */
+ while (p < end) {
+ char* asc_out = ascii_buffer;
+
+ sprintf(code_buffer, "%08x ", p);
+
+ int i;
+ for (i = 0; i < 4; i++) {
+ /*
+ * If we see (data == -1 && errno != 0), we know that the ptrace
+ * call failed, probably because we're dumping memory in an
+ * unmapped or inaccessible page. I don't know if there's
+ * value in making that explicit in the output -- it likely
+ * just complicates parsing and clarifies nothing for the
+ * enlightened reader.
+ */
+ long data = ptrace(PTRACE_PEEKTEXT, tid, (void*)p, NULL);
+ sprintf(code_buffer + strlen(code_buffer), "%08lx ", data);
+
+ int j;
+ for (j = 0; j < 4; j++) {
+ /*
+ * Our isprint() allows high-ASCII characters that display
+ * differently (often badly) in different viewers, so we
+ * just use a simpler test.
+ */
+ char val = (data >> (j*8)) & 0xff;
+ if (val >= 0x20 && val < 0x7f) {
+ *asc_out++ = val;
+ } else {
+ *asc_out++ = '.';
+ }
+ }
+ p += 4;
+ }
+ *asc_out = '\0';
+ _LOG(tfd, !at_fault, " %s %s\n", code_buffer, ascii_buffer);
+ }
+}
+
+void dump_nearby_maps(const ptrace_context_t* context, int tfd, pid_t tid) {
+ siginfo_t si;
+ memset(&si, 0, sizeof(si));
+ if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) {
+ _LOG(tfd, false, "cannot get siginfo for %d: %s\n",
+ tid, strerror(errno));
+ return;
+ }
+ if (!signal_has_address(si.si_signo)) {
+ return;
+ }
+
+ uintptr_t addr = (uintptr_t) si.si_addr;
+ addr &= ~0xfff; /* round to 4K page boundary */
+ if (addr == 0) { /* null-pointer deref */
+ return;
+ }
+
+ _LOG(tfd, false, "\nmemory map around fault addr %08x:\n", (int)si.si_addr);
+
+ /*
+ * Search for a match, or for a hole where the match would be. The list
+ * is backward from the file content, so it starts at high addresses.
+ */
+ bool found = false;
+ map_info_t* map = context->map_info_list;
+ map_info_t *next = NULL;
+ map_info_t *prev = NULL;
+ while (map != NULL) {
+ if (addr >= map->start && addr < map->end) {
+ found = true;
+ next = map->next;
+ break;
+ } else if (addr >= map->end) {
+ /* map would be between "prev" and this entry */
+ next = map;
+ map = NULL;
+ break;
+ }
+
+ prev = map;
+ map = map->next;
+ }
+
+ /*
+ * Show "next" then "match" then "prev" so that the addresses appear in
+ * ascending order (like /proc/pid/maps).
+ */
+ if (next != NULL) {
+ _LOG(tfd, false, " %08x-%08x %s\n", next->start, next->end, next->name);
+ } else {
+ _LOG(tfd, false, " (no map below)\n");
+ }
+ if (map != NULL) {
+ _LOG(tfd, false, " %08x-%08x %s\n", map->start, map->end, map->name);
+ } else {
+ _LOG(tfd, false, " (no map for address)\n");
+ }
+ if (prev != NULL) {
+ _LOG(tfd, false, " %08x-%08x %s\n", prev->start, prev->end, prev->name);
+ } else {
+ _LOG(tfd, false, " (no map above)\n");
+ }
+}
diff --git a/debuggerd/utility.h b/debuggerd/utility.h
index 4a935d2..39f91cb 100644
--- a/debuggerd/utility.h
+++ b/debuggerd/utility.h
@@ -15,50 +15,17 @@
** limitations under the License.
*/
-#ifndef __utility_h
-#define __utility_h
+#ifndef _DEBUGGERD_UTILITY_H
+#define _DEBUGGERD_UTILITY_H
#include <stddef.h>
#include <stdbool.h>
+#include <sys/types.h>
+#include <corkscrew/backtrace.h>
-#include "symbol_table.h"
-
-#ifndef PT_ARM_EXIDX
-#define PT_ARM_EXIDX 0x70000001 /* .ARM.exidx segment */
-#endif
-
-#define STACK_CONTENT_DEPTH 32
-
-typedef struct mapinfo {
- struct mapinfo *next;
- unsigned start;
- unsigned end;
- unsigned exidx_start;
- unsigned exidx_end;
- struct symbol_table *symbols;
- bool isExecutable;
- char name[];
-} mapinfo;
-
-/* Get a word from pid using ptrace. The result is the return value. */
-extern int get_remote_word(int pid, void *src);
-
-/* Handy routine to read aggregated data from pid using ptrace. The read
- * values are written to the dest locations directly.
- */
-extern void get_remote_struct(int pid, void *src, void *dst, size_t size);
-
-/* Find the containing map for the pc */
-const mapinfo *pc_to_mapinfo (mapinfo *mi, unsigned pc, unsigned *rel_pc);
-
-/* Map a pc address to the name of the containing ELF file */
-const char *map_to_name(mapinfo *mi, unsigned pc, const char* def);
-
-/* Log information onto the tombstone */
-extern void _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...);
-
-/* Determine whether si_addr is valid for this signal */
-bool signal_has_address(int sig);
+/* Log information onto the tombstone. */
+void _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...)
+ __attribute__ ((format(printf, 3, 4)));
#define LOG(fmt...) _LOG(-1, 0, fmt)
@@ -76,4 +43,30 @@
#define XLOG2(fmt...) do {} while(0)
#endif
-#endif
+/*
+ * Returns true if the specified signal has an associated address.
+ * (i.e. it sets siginfo_t.si_addr).
+ */
+bool signal_has_address(int sig);
+
+/*
+ * Dumps the backtrace and contents of the stack.
+ */
+void dump_backtrace_and_stack(const ptrace_context_t* context, int tfd, pid_t tid, bool at_fault);
+
+/*
+ * Dumps a few bytes of memory, starting a bit before and ending a bit
+ * after the specified address.
+ */
+void dump_memory(int tfd, pid_t tid, uintptr_t addr, bool at_fault);
+
+/*
+ * If this isn't clearly a null pointer dereference, dump the
+ * /proc/maps entries near the fault address.
+ *
+ * This only makes sense to do on the thread that crashed.
+ */
+void dump_nearby_maps(const ptrace_context_t* context, int tfd, pid_t tid);
+
+
+#endif // _DEBUGGERD_UTILITY_H
diff --git a/debuggerd/x86/machine.c b/debuggerd/x86/machine.c
index 9d418cf..2729c7e 100644
--- a/debuggerd/x86/machine.c
+++ b/debuggerd/x86/machine.c
@@ -31,31 +31,43 @@
#include <cutils/sockets.h>
#include <cutils/properties.h>
+#include <corkscrew/backtrace.h>
+#include <corkscrew/ptrace.h>
+
#include <linux/input.h>
+#include "../machine.h"
#include "../utility.h"
-#include "x86_utility.h"
-void dump_registers(int tfd, int pid, bool at_fault)
-{
+static void dump_registers(const ptrace_context_t* context __attribute((unused)),
+ int tfd, pid_t tid, bool at_fault) {
struct pt_regs_x86 r;
bool only_in_tombstone = !at_fault;
- if(ptrace(PTRACE_GETREGS, pid, 0, &r)) {
- _LOG(tfd, only_in_tombstone,
- "cannot get registers: %s\n", strerror(errno));
+ if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+ _LOG(tfd, only_in_tombstone, "cannot get registers: %s\n", strerror(errno));
return;
}
-//if there is no stack, no print just like arm
+ //if there is no stack, no print just like arm
if(!r.ebp)
return;
- _LOG(tfd, only_in_tombstone, " eax %08x ebx %08x ecx %08x edx %08x\n",
+ _LOG(tfd, only_in_tombstone, " eax %08x ebx %08x ecx %08x edx %08x\n",
r.eax, r.ebx, r.ecx, r.edx);
- _LOG(tfd, only_in_tombstone, " esi %08x edi %08x\n",
+ _LOG(tfd, only_in_tombstone, " esi %08x edi %08x\n",
r.esi, r.edi);
- _LOG(tfd, only_in_tombstone, " xcs %08x xds %08x xes %08x xfs %08x xss %08x\n",
+ _LOG(tfd, only_in_tombstone, " xcs %08x xds %08x xes %08x xfs %08x xss %08x\n",
r.xcs, r.xds, r.xes, r.xfs, r.xss);
- _LOG(tfd, only_in_tombstone,
- " eip %08x ebp %08x esp %08x flags %08x\n",
+ _LOG(tfd, only_in_tombstone, " eip %08x ebp %08x esp %08x flags %08x\n",
r.eip, r.ebp, r.esp, r.eflags);
}
+
+void dump_thread(const ptrace_context_t* context, int tfd, pid_t tid, bool at_fault) {
+ dump_registers(context, tfd, tid, at_fault);
+
+ dump_backtrace_and_stack(context, tfd, tid, at_fault);
+
+ if (at_fault) {
+ dump_nearby_maps(context, tfd, tid);
+ }
+}
+
diff --git a/debuggerd/x86/unwind.c b/debuggerd/x86/unwind.c
deleted file mode 100644
index 0a7f04c..0000000
--- a/debuggerd/x86/unwind.c
+++ /dev/null
@@ -1,86 +0,0 @@
-#include <cutils/logd.h>
-#include <sys/ptrace.h>
-#include "../utility.h"
-#include "x86_utility.h"
-
-
-int unwind_backtrace_with_ptrace_x86(int tfd, pid_t pid, mapinfo *map,
- bool at_fault)
-{
- struct pt_regs_x86 r;
- unsigned int stack_level = 0;
- unsigned int stack_depth = 0;
- unsigned int rel_pc;
- unsigned int stack_ptr;
- unsigned int stack_content;
-
- if(ptrace(PTRACE_GETREGS, pid, 0, &r)) return 0;
- unsigned int eip = (unsigned int)r.eip;
- unsigned int ebp = (unsigned int)r.ebp;
- unsigned int cur_sp = (unsigned int)r.esp;
- const mapinfo *mi;
- const struct symbol* sym = 0;
-
-
-//ebp==0, it indicates that the stack is poped to the bottom or there is no stack at all.
- while (ebp) {
- mi = pc_to_mapinfo(map, eip, &rel_pc);
-
- /* See if we can determine what symbol this stack frame resides in */
- if (mi != 0 && mi->symbols != 0) {
- sym = symbol_table_lookup(mi->symbols, rel_pc);
- }
- if (sym) {
- _LOG(tfd, !at_fault, " #%02d eip: %08x %s (%s)\n",
- stack_level, eip, mi ? mi->name : "", sym->name);
- } else {
- _LOG(tfd, !at_fault, " #%02d eip: %08x %s\n",
- stack_level, eip, mi ? mi->name : "");
- }
-
- stack_level++;
- if (stack_level >= STACK_DEPTH || eip == 0)
- break;
- eip = ptrace(PTRACE_PEEKTEXT, pid, (void*)(ebp + 4), NULL);
- ebp = ptrace(PTRACE_PEEKTEXT, pid, (void*)ebp, NULL);
- }
- ebp = (unsigned int)r.ebp;
- stack_depth = stack_level;
- stack_level = 0;
- if (ebp)
- _LOG(tfd, !at_fault, "stack: \n");
- while (ebp) {
- stack_ptr = cur_sp;
- while((int)(ebp - stack_ptr) >= 0) {
- stack_content = ptrace(PTRACE_PEEKTEXT, pid, (void*)stack_ptr, NULL);
- mi = pc_to_mapinfo(map, stack_content, &rel_pc);
-
- /* See if we can determine what symbol this stack frame resides in */
- if (mi != 0 && mi->symbols != 0) {
- sym = symbol_table_lookup(mi->symbols, rel_pc);
- }
- if (sym) {
- _LOG(tfd, !at_fault, " #%02d %08x %08x %s (%s)\n",
- stack_level, stack_ptr, stack_content, mi ? mi->name : "", sym->name);
- } else {
- _LOG(tfd, !at_fault, " #%02d %08x %08x %s\n",
- stack_level, stack_ptr, stack_content, mi ? mi->name : "");
- }
-
- stack_ptr = stack_ptr + 4;
- //the stack frame may be very deep.
- if((int)(stack_ptr - cur_sp) >= STACK_FRAME_DEPTH) {
- _LOG(tfd, !at_fault, " ...... ...... \n");
- break;
- }
- }
- cur_sp = ebp + 4;
- stack_level++;
- if (stack_level >= STACK_DEPTH || stack_level >= stack_depth)
- break;
- ebp = ptrace(PTRACE_PEEKTEXT, pid, (void*)ebp, NULL);
- }
-
- return stack_depth;
-}
-
diff --git a/debuggerd/x86/x86_utility.h b/debuggerd/x86/x86_utility.h
deleted file mode 100644
index ac6a885..0000000
--- a/debuggerd/x86/x86_utility.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define STACK_DEPTH 8
-#define STACK_FRAME_DEPTH 64
-
-typedef struct pt_regs_x86 {
- long ebx;
- long ecx;
- long edx;
- long esi;
- long edi;
- long ebp;
- long eax;
- int xds;
- int xes;
- int xfs;
- int xgs;
- long orig_eax;
- long eip;
- int xcs;
- long eflags;
- long esp;
- int xss;
-}pt_regs_x86;
-
diff --git a/fastboot/Android.mk b/fastboot/Android.mk
index 3c5538f..8c130ff 100644
--- a/fastboot/Android.mk
+++ b/fastboot/Android.mk
@@ -16,8 +16,9 @@
include $(CLEAR_VARS)
-LOCAL_C_INCLUDES := $(LOCAL_PATH)/../mkbootimg
-LOCAL_SRC_FILES := protocol.c engine.c bootimg.c fastboot.c
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/../mkbootimg \
+ $(LOCAL_PATH)/../../extras/ext4_utils
+LOCAL_SRC_FILES := protocol.c engine.c bootimg.c fastboot.c
LOCAL_MODULE := fastboot
ifeq ($(HOST_OS),linux)
@@ -47,7 +48,7 @@
LOCAL_C_INCLUDES += development/host/windows/usb/api
endif
-LOCAL_STATIC_LIBRARIES := $(EXTRA_STATIC_LIBS) libzipfile libunz
+LOCAL_STATIC_LIBRARIES := $(EXTRA_STATIC_LIBS) libzipfile libunz libext4_utils libz
include $(BUILD_HOST_EXECUTABLE)
$(call dist-for-goals,dist_files,$(LOCAL_BUILT_MODULE))
diff --git a/fastboot/engine.c b/fastboot/engine.c
index 6d94035..0e6594c 100644
--- a/fastboot/engine.c
+++ b/fastboot/engine.c
@@ -26,13 +26,29 @@
* SUCH DAMAGE.
*/
+#include "fastboot.h"
+#include "make_ext4fs.h"
+#include "ext4_utils.h"
+
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
+#include <stdbool.h>
#include <string.h>
+#include <sys/stat.h>
#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
-#include "fastboot.h"
+#ifdef USE_MINGW
+#include <fcntl.h>
+#else
+#include <sys/mman.h>
+#endif
+
+extern struct fs_info info;
+
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
double now()
{
@@ -60,15 +76,18 @@
#define OP_COMMAND 2
#define OP_QUERY 3
#define OP_NOTICE 4
+#define OP_FORMAT 5
typedef struct Action Action;
+#define CMD_SIZE 64
+
struct Action
{
unsigned op;
Action *next;
- char cmd[64];
+ char cmd[CMD_SIZE];
const char *prod;
void *data;
unsigned size;
@@ -82,6 +101,35 @@
static Action *action_list = 0;
static Action *action_last = 0;
+
+struct image_data {
+ long long partition_size;
+ long long image_size; // real size of image file
+ void *buffer;
+};
+
+void generate_ext4_image(struct image_data *image);
+void cleanup_image(struct image_data *image);
+
+struct generator {
+ char *fs_type;
+
+ /* generate image and return it as image->buffer.
+ * size of the buffer returned as image->image_size.
+ *
+ * image->partition_size specifies what is the size of the
+ * file partition we generate image for.
+ */
+ void (*generate)(struct image_data *image);
+
+ /* it cleans the buffer allocated during image creation.
+ * this function probably does free() or munmap().
+ */
+ void (*cleanup)(struct image_data *image);
+} generators[] = {
+ { "ext4", generate_ext4_image, cleanup_image }
+};
+
static int cb_default(Action *a, int status, char *resp)
{
if (status) {
@@ -133,6 +181,162 @@
a->msg = mkmsg("erasing '%s'", ptn);
}
+/* Loads file content into buffer. Returns NULL on error. */
+static void *load_buffer(int fd, off_t size)
+{
+ void *buffer;
+
+#ifdef USE_MINGW
+ ssize_t count = 0;
+
+ // mmap is more efficient but mingw does not support it.
+ // In this case we read whole image into memory buffer.
+ buffer = malloc(size);
+ if (!buffer) {
+ perror("malloc");
+ return NULL;
+ }
+
+ lseek(fd, 0, SEEK_SET);
+ while(count < size) {
+ ssize_t actually_read = read(fd, (char*)buffer+count, size-count);
+
+ if (actually_read == 0) {
+ break;
+ }
+ if (actually_read < 0) {
+ if (errno == EINTR) {
+ continue;
+ }
+ perror("read");
+ free(buffer);
+ return NULL;
+ }
+
+ count += actually_read;
+ }
+#else
+ buffer = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+ if (buffer == MAP_FAILED) {
+ perror("mmap");
+ return NULL;
+ }
+#endif
+
+ return buffer;
+}
+
+void cleanup_image(struct image_data *image)
+{
+#ifdef USE_MINGW
+ free(image->buffer);
+#else
+ munmap(image->buffer, image->image_size);
+#endif
+}
+
+void generate_ext4_image(struct image_data *image)
+{
+ int fd;
+ struct stat st;
+
+#ifdef USE_MINGW
+ /* Ideally we should use tmpfile() here, the same as with unix version.
+ * But unfortunately it is not portable as it is not clear whether this
+ * function opens file in TEXT or BINARY mode.
+ *
+ * There are also some reports it is buggy:
+ * http://pdplab.it.uom.gr/teaching/gcc_manuals/gnulib.html#tmpfile
+ * http://www.mega-nerd.com/erikd/Blog/Windiots/tmpfile.html
+ */
+ char *filename = tempnam(getenv("TEMP"), "fastboot-format.img");
+ fd = open(filename, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0644);
+ unlink(filename);
+#else
+ fd = fileno(tmpfile());
+#endif
+ reset_ext4fs_info();
+ info.len = image->partition_size;
+ make_ext4fs_internal(fd, NULL, NULL, 0, 0, 1, 0, 0, 0);
+
+ fstat(fd, &st);
+ image->image_size = st.st_size;
+ image->buffer = load_buffer(fd, st.st_size);
+
+ close(fd);
+}
+
+int fb_format(Action *a, usb_handle *usb)
+{
+ const char *partition = a->cmd;
+ char response[FB_RESPONSE_SZ+1];
+ int status = 0;
+ struct image_data image;
+ struct generator *generator = NULL;
+ int fd;
+ unsigned i;
+ char cmd[CMD_SIZE];
+
+ response[FB_RESPONSE_SZ] = '\0';
+ snprintf(cmd, sizeof(cmd), "getvar:partition-type:%s", partition);
+ status = fb_command_response(usb, cmd, response);
+ if (status) {
+ fprintf(stderr,"FAILED (%s)\n", fb_get_error());
+ return status;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(generators); i++) {
+ if (!strncmp(generators[i].fs_type, response, FB_RESPONSE_SZ)) {
+ generator = &generators[i];
+ break;
+ }
+ }
+ if (!generator) {
+ fprintf(stderr,"Formatting is not supported for filesystem with type '%s'.\n",
+ response);
+ return -1;
+ }
+
+ response[FB_RESPONSE_SZ] = '\0';
+ snprintf(cmd, sizeof(cmd), "getvar:partition-size:%s", partition);
+ status = fb_command_response(usb, cmd, response);
+ if (status) {
+ fprintf(stderr,"FAILED (%s)\n", fb_get_error());
+ return status;
+ }
+ image.partition_size = strtoll(response, (char **)NULL, 16);
+
+ generator->generate(&image);
+ if (!image.buffer) {
+ fprintf(stderr,"Cannot generate image.\n");
+ return -1;
+ }
+
+ // Following piece of code is similar to fb_queue_flash() but executes
+ // actions directly without queuing
+ fprintf(stderr, "sending '%s' (%lli KB)...\n", partition, image.image_size/1024);
+ status = fb_download_data(usb, image.buffer, image.image_size);
+ if (status) goto cleanup;
+
+ fprintf(stderr, "writing '%s'...\n", partition);
+ snprintf(cmd, sizeof(cmd), "flash:%s", partition);
+ status = fb_command(usb, cmd);
+ if (status) goto cleanup;
+
+cleanup:
+ generator->cleanup(&image);
+
+ return status;
+}
+
+void fb_queue_format(const char *partition)
+{
+ Action *a;
+
+ a = queue_action(OP_FORMAT, partition);
+ a->msg = mkmsg("formatting '%s' partition", partition);
+}
+
void fb_queue_flash(const char *ptn, void *data, unsigned sz)
{
Action *a;
@@ -340,6 +544,10 @@
if (status) break;
} else if (a->op == OP_NOTICE) {
fprintf(stderr,"%s\n",(char*)a->data);
+ } else if (a->op == OP_FORMAT) {
+ status = fb_format(a, usb);
+ status = a->func(a, status, status ? fb_get_error() : "");
+ if (status) break;
} else {
die("bogus action");
}
diff --git a/fastboot/fastboot.c b/fastboot/fastboot.c
index fb7ac4d..2d28d59 100644
--- a/fastboot/fastboot.c
+++ b/fastboot/fastboot.c
@@ -88,6 +88,8 @@
fn = "system.img";
} else if(!strcmp(item,"userdata")) {
fn = "userdata.img";
+ } else if(!strcmp(item,"cache")) {
+ fn = "cache.img";
} else if(!strcmp(item,"info")) {
fn = "android-info.txt";
} else {
@@ -223,6 +225,7 @@
" flashall flash boot + recovery + system\n"
" flash <partition> [ <filename> ] write a file to a flash partition\n"
" erase <partition> erase a flash partition\n"
+ " format <partition> format a flash partition \n"
" getvar <variable> display a bootloader variable\n"
" boot <kernel> [ <ramdisk> ] download and boot kernel\n"
" flash:raw boot <kernel> [ <ramdisk> ] create bootimage and flash it\n"
@@ -634,6 +637,10 @@
require(2);
fb_queue_erase(argv[1]);
skip(2);
+ } else if(!strcmp(*argv, "format")) {
+ require(2);
+ fb_queue_format(argv[1]);
+ skip(2);
} else if(!strcmp(*argv, "signature")) {
require(2);
data = load_file(argv[1], &sz);
diff --git a/fastboot/fastboot.h b/fastboot/fastboot.h
index 9e043fe..c2f97a2 100644
--- a/fastboot/fastboot.h
+++ b/fastboot/fastboot.h
@@ -43,6 +43,7 @@
/* engine.c - high level command queue engine */
void fb_queue_flash(const char *ptn, void *data, unsigned sz);;
void fb_queue_erase(const char *ptn);
+void fb_queue_format(const char *ptn);
void fb_queue_require(const char *prod, const char *var, int invert,
unsigned nvalues, const char **value);
void fb_queue_display(const char *var, const char *prettyname);
diff --git a/include/arch/darwin-x86/AndroidConfig.h b/include/arch/darwin-x86/AndroidConfig.h
index c8ccc7e..f79f364 100644
--- a/include/arch/darwin-x86/AndroidConfig.h
+++ b/include/arch/darwin-x86/AndroidConfig.h
@@ -109,7 +109,7 @@
/*
* Define this if we have localtime_r().
*/
-#define HAVE_LOCALTIME_R
+#define HAVE_LOCALTIME_R 1
/*
* Define this if we have gethostbyname_r().
diff --git a/include/arch/freebsd-x86/AndroidConfig.h b/include/arch/freebsd-x86/AndroidConfig.h
index d828bd5..a8176f4 100644
--- a/include/arch/freebsd-x86/AndroidConfig.h
+++ b/include/arch/freebsd-x86/AndroidConfig.h
@@ -114,7 +114,7 @@
/*
* Define this if we have localtime_r().
*/
-#define HAVE_LOCALTIME_R
+#define HAVE_LOCALTIME_R 1
/*
* Define this if we have gethostbyname_r().
diff --git a/include/arch/linux-arm/AndroidConfig.h b/include/arch/linux-arm/AndroidConfig.h
index cae112b..e1ce0e0 100644
--- a/include/arch/linux-arm/AndroidConfig.h
+++ b/include/arch/linux-arm/AndroidConfig.h
@@ -122,7 +122,7 @@
/*
* Define this if we have localtime_r().
*/
-/* #define HAVE_LOCALTIME_R */
+/* #define HAVE_LOCALTIME_R 1 */
/*
* Define this if we have gethostbyname_r().
diff --git a/include/arch/linux-ppc/AndroidConfig.h b/include/arch/linux-ppc/AndroidConfig.h
index 00706dc..b9719e6 100644
--- a/include/arch/linux-ppc/AndroidConfig.h
+++ b/include/arch/linux-ppc/AndroidConfig.h
@@ -109,7 +109,7 @@
/*
* Define this if we have localtime_r().
*/
-#define HAVE_LOCALTIME_R
+#define HAVE_LOCALTIME_R 1
/*
* Define this if we have gethostbyname_r().
diff --git a/include/arch/linux-sh/AndroidConfig.h b/include/arch/linux-sh/AndroidConfig.h
index 5562eae..a040b98 100644
--- a/include/arch/linux-sh/AndroidConfig.h
+++ b/include/arch/linux-sh/AndroidConfig.h
@@ -122,7 +122,7 @@
/*
* Define this if we have localtime_r().
*/
-/* #define HAVE_LOCALTIME_R */
+/* #define HAVE_LOCALTIME_R 1 */
/*
* Define this if we have gethostbyname_r().
diff --git a/include/arch/linux-x86/AndroidConfig.h b/include/arch/linux-x86/AndroidConfig.h
index 7dcaa98..82e538c 100644
--- a/include/arch/linux-x86/AndroidConfig.h
+++ b/include/arch/linux-x86/AndroidConfig.h
@@ -109,7 +109,7 @@
/*
* Define this if we have localtime_r().
*/
-#define HAVE_LOCALTIME_R
+#define HAVE_LOCALTIME_R 1
/*
* Define this if we have gethostbyname_r().
diff --git a/include/arch/target_linux-x86/AndroidConfig.h b/include/arch/target_linux-x86/AndroidConfig.h
index 05dd220..9efb81a 100644
--- a/include/arch/target_linux-x86/AndroidConfig.h
+++ b/include/arch/target_linux-x86/AndroidConfig.h
@@ -108,7 +108,7 @@
/*
* Define this if we have localtime_r().
*/
-/* #define HAVE_LOCALTIME_R */
+/* #define HAVE_LOCALTIME_R 1 */
/*
* Define this if we have gethostbyname_r().
diff --git a/include/arch/windows/AndroidConfig.h b/include/arch/windows/AndroidConfig.h
index ad890b4..445e754 100644
--- a/include/arch/windows/AndroidConfig.h
+++ b/include/arch/windows/AndroidConfig.h
@@ -125,7 +125,7 @@
/*
* Define this if we have localtime_r().
*/
-/* #define HAVE_LOCALTIME_R */
+/* #define HAVE_LOCALTIME_R 1 */
/*
* Define this if we have gethostbyname_r().
diff --git a/include/corkscrew/backtrace.h b/include/corkscrew/backtrace.h
new file mode 100644
index 0000000..556ad04
--- /dev/null
+++ b/include/corkscrew/backtrace.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* A stack unwinder. */
+
+#ifndef _CORKSCREW_BACKTRACE_H
+#define _CORKSCREW_BACKTRACE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/types.h>
+#include <corkscrew/ptrace.h>
+#include <corkscrew/map_info.h>
+#include <corkscrew/symbol_table.h>
+
+/*
+ * Describes a single frame of a backtrace.
+ */
+typedef struct {
+ uintptr_t absolute_pc; /* absolute PC offset */
+ uintptr_t stack_top; /* top of stack for this frame */
+ size_t stack_size; /* size of this stack frame */
+} backtrace_frame_t;
+
+/*
+ * Describes the symbols associated with a backtrace frame.
+ */
+typedef struct {
+ uintptr_t relative_pc; /* relative frame PC offset from the start of the library,
+ or the absolute PC if the library is unknown */
+ uintptr_t relative_symbol_addr; /* relative offset of the symbol from the start of the
+ library or 0 if the library is unknown */
+ char* map_name; /* executable or library name, or NULL if unknown */
+ char* symbol_name; /* symbol name, or NULL if unknown */
+ char* demangled_name; /* demangled symbol name, or NULL if unknown */
+} backtrace_symbol_t;
+
+/*
+ * Unwinds the call stack for the current thread of execution.
+ * Populates the backtrace array with the program counters from the call stack.
+ * Returns the number of frames collected, or -1 if an error occurred.
+ */
+ssize_t unwind_backtrace(backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth);
+
+/*
+ * Unwinds the call stack for a thread within this process.
+ * Populates the backtrace array with the program counters from the call stack.
+ * Returns the number of frames collected, or -1 if an error occurred.
+ *
+ * The task is briefly suspended while the backtrace is being collected.
+ */
+ssize_t unwind_backtrace_thread(pid_t tid, backtrace_frame_t* backtrace,
+ size_t ignore_depth, size_t max_depth);
+
+/*
+ * Unwinds the call stack of a task within a remote process using ptrace().
+ * Populates the backtrace array with the program counters from the call stack.
+ * Returns the number of frames collected, or -1 if an error occurred.
+ */
+ssize_t unwind_backtrace_ptrace(pid_t tid, const ptrace_context_t* context,
+ backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth);
+
+/*
+ * Gets the symbols for each frame of a backtrace.
+ * The symbols array must be big enough to hold one symbol record per frame.
+ * The symbols must later be freed using free_backtrace_symbols.
+ */
+void get_backtrace_symbols(const backtrace_frame_t* backtrace, size_t frames,
+ backtrace_symbol_t* backtrace_symbols);
+
+/*
+ * Gets the symbols for each frame of a backtrace from a remote process.
+ * The symbols array must be big enough to hold one symbol record per frame.
+ * The symbols must later be freed using free_backtrace_symbols.
+ */
+void get_backtrace_symbols_ptrace(const ptrace_context_t* context,
+ const backtrace_frame_t* backtrace, size_t frames,
+ backtrace_symbol_t* backtrace_symbols);
+
+/*
+ * Frees the storage associated with backtrace symbols.
+ */
+void free_backtrace_symbols(backtrace_symbol_t* backtrace_symbols, size_t frames);
+
+enum {
+ // A hint for how big to make the line buffer for format_backtrace_line
+ MAX_BACKTRACE_LINE_LENGTH = 800,
+};
+
+/**
+ * Formats a line from a backtrace as a zero-terminated string into the specified buffer.
+ */
+void format_backtrace_line(unsigned frameNumber, const backtrace_frame_t* frame,
+ const backtrace_symbol_t* symbol, char* buffer, size_t bufferSize);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CORKSCREW_BACKTRACE_H
diff --git a/include/corkscrew/demangle.h b/include/corkscrew/demangle.h
new file mode 100644
index 0000000..04b0225
--- /dev/null
+++ b/include/corkscrew/demangle.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* C++ symbol name demangling. */
+
+#ifndef _CORKSCREW_DEMANGLE_H
+#define _CORKSCREW_DEMANGLE_H
+
+#include <sys/types.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Demangles a C++ symbol name.
+ * If name is NULL or if the name cannot be demangled, returns NULL.
+ * Otherwise, returns a newly allocated string that contains the demangled name.
+ *
+ * The caller must free the returned string using free().
+ */
+char* demangle_symbol_name(const char* name);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CORKSCREW_DEMANGLE_H
diff --git a/include/corkscrew/map_info.h b/include/corkscrew/map_info.h
new file mode 100644
index 0000000..c5cd8f8
--- /dev/null
+++ b/include/corkscrew/map_info.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Process memory map. */
+
+#ifndef _CORKSCREW_MAP_INFO_H
+#define _CORKSCREW_MAP_INFO_H
+
+#include <sys/types.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct map_info {
+ struct map_info* next;
+ uintptr_t start;
+ uintptr_t end;
+ bool is_readable;
+ bool is_executable;
+ void* data; // arbitrary data associated with the map by the user, initially NULL
+ char name[];
+} map_info_t;
+
+/* Loads memory map from /proc/<tid>/maps. */
+map_info_t* load_map_info_list(pid_t tid);
+
+/* Frees memory map. */
+void free_map_info_list(map_info_t* milist);
+
+/* Finds the memory map that contains the specified address. */
+const map_info_t* find_map_info(const map_info_t* milist, uintptr_t addr);
+
+/* Returns true if the addr is in an readable map. */
+bool is_readable_map(const map_info_t* milist, uintptr_t addr);
+
+/* Returns true if the addr is in an executable map. */
+bool is_executable_map(const map_info_t* milist, uintptr_t addr);
+
+/* Acquires a reference to the memory map for this process.
+ * The result is cached and refreshed automatically.
+ * Make sure to release the map info when done. */
+map_info_t* acquire_my_map_info_list();
+
+/* Releases a reference to the map info for this process that was
+ * previous acquired using acquire_my_map_info_list(). */
+void release_my_map_info_list(map_info_t* milist);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CORKSCREW_MAP_INFO_H
diff --git a/include/corkscrew/ptrace.h b/include/corkscrew/ptrace.h
new file mode 100644
index 0000000..172e348
--- /dev/null
+++ b/include/corkscrew/ptrace.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Useful ptrace() utility functions. */
+
+#ifndef _CORKSCREW_PTRACE_H
+#define _CORKSCREW_PTRACE_H
+
+#include <corkscrew/map_info.h>
+#include <corkscrew/symbol_table.h>
+
+#include <sys/types.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Stores information about a process that is used for several different
+ * ptrace() based operations. */
+typedef struct {
+ map_info_t* map_info_list;
+} ptrace_context_t;
+
+/* Describes how to access memory from a process. */
+typedef struct {
+ pid_t tid;
+ const map_info_t* map_info_list;
+} memory_t;
+
+#if __i386__
+/* ptrace() register context. */
+typedef struct pt_regs_x86 {
+ uint32_t ebx;
+ uint32_t ecx;
+ uint32_t edx;
+ uint32_t esi;
+ uint32_t edi;
+ uint32_t ebp;
+ uint32_t eax;
+ uint32_t xds;
+ uint32_t xes;
+ uint32_t xfs;
+ uint32_t xgs;
+ uint32_t orig_eax;
+ uint32_t eip;
+ uint32_t xcs;
+ uint32_t eflags;
+ uint32_t esp;
+ uint32_t xss;
+} pt_regs_x86_t;
+#endif
+
+/*
+ * Initializes a memory structure for accessing memory from this process.
+ */
+void init_memory(memory_t* memory, const map_info_t* map_info_list);
+
+/*
+ * Initializes a memory structure for accessing memory from another process
+ * using ptrace().
+ */
+void init_memory_ptrace(memory_t* memory, pid_t tid);
+
+/*
+ * Reads a word of memory safely.
+ * If the memory is local, ensures that the address is readable before dereferencing it.
+ * Returns false and a value of 0xffffffff if the word could not be read.
+ */
+bool try_get_word(const memory_t* memory, uintptr_t ptr, uint32_t* out_value);
+
+/*
+ * Reads a word of memory safely using ptrace().
+ * Returns false and a value of 0xffffffff if the word could not be read.
+ */
+bool try_get_word_ptrace(pid_t tid, uintptr_t ptr, uint32_t* out_value);
+
+/*
+ * Loads information needed for examining a remote process using ptrace().
+ * The caller must already have successfully attached to the process
+ * using ptrace().
+ *
+ * The context can be used for any threads belonging to that process
+ * assuming ptrace() is attached to them before performing the actual
+ * unwinding. The context can continue to be used to decode backtraces
+ * even after ptrace() has been detached from the process.
+ */
+ptrace_context_t* load_ptrace_context(pid_t pid);
+
+/*
+ * Frees a ptrace context.
+ */
+void free_ptrace_context(ptrace_context_t* context);
+
+/*
+ * Finds a symbol using ptrace.
+ * Returns the containing map and information about the symbol, or
+ * NULL if one or the other is not available.
+ */
+void find_symbol_ptrace(const ptrace_context_t* context,
+ uintptr_t addr, const map_info_t** out_map_info, const symbol_t** out_symbol);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CORKSCREW_PTRACE_H
diff --git a/include/corkscrew/symbol_table.h b/include/corkscrew/symbol_table.h
new file mode 100644
index 0000000..020c8b8
--- /dev/null
+++ b/include/corkscrew/symbol_table.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _CORKSCREW_SYMBOL_TABLE_H
+#define _CORKSCREW_SYMBOL_TABLE_H
+
+#include <sys/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+ uintptr_t start;
+ uintptr_t end;
+ char* name;
+} symbol_t;
+
+typedef struct {
+ symbol_t* symbols;
+ size_t num_symbols;
+} symbol_table_t;
+
+/*
+ * Loads a symbol table from a given file.
+ * Returns NULL on error.
+ */
+symbol_table_t* load_symbol_table(const char* filename);
+
+/*
+ * Frees a symbol table.
+ */
+void free_symbol_table(symbol_table_t* table);
+
+/*
+ * Finds a symbol associated with an address in the symbol table.
+ * Returns NULL if not found.
+ */
+const symbol_t* find_symbol(const symbol_table_t* table, uintptr_t addr);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CORKSCREW_SYMBOL_TABLE_H
diff --git a/include/cutils/log.h b/include/cutils/log.h
index 2997a0c..878952e 100644
--- a/include/cutils/log.h
+++ b/include/cutils/log.h
@@ -79,10 +79,6 @@
#else
#define ALOGV(...) ((void)ALOG(LOG_VERBOSE, LOG_TAG, __VA_ARGS__))
#endif
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGV
-#define LOGV ALOGV
-#endif
#endif
#define CONDITION(cond) (__builtin_expect((cond)!=0, 0))
@@ -96,10 +92,6 @@
? ((void)ALOG(LOG_VERBOSE, LOG_TAG, __VA_ARGS__)) \
: (void)0 )
#endif
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGV_IF
-#define LOGV_IF ALOGV_IF
-#endif
#endif
/*
@@ -107,10 +99,6 @@
*/
#ifndef ALOGD
#define ALOGD(...) ((void)ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__))
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGD
-#define LOGD ALOGD
-#endif
#endif
#ifndef ALOGD_IF
@@ -118,10 +106,6 @@
( (CONDITION(cond)) \
? ((void)ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)) \
: (void)0 )
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGD_IF
-#define LOGD_IF ALOGD_IF
-#endif
#endif
/*
@@ -129,10 +113,6 @@
*/
#ifndef ALOGI
#define ALOGI(...) ((void)ALOG(LOG_INFO, LOG_TAG, __VA_ARGS__))
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGI
-#define LOGI ALOGI
-#endif
#endif
#ifndef ALOGI_IF
@@ -140,10 +120,6 @@
( (CONDITION(cond)) \
? ((void)ALOG(LOG_INFO, LOG_TAG, __VA_ARGS__)) \
: (void)0 )
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGI_IF
-#define LOGI_IF ALOGI_IF
-#endif
#endif
/*
@@ -151,10 +127,6 @@
*/
#ifndef ALOGW
#define ALOGW(...) ((void)ALOG(LOG_WARN, LOG_TAG, __VA_ARGS__))
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGW
-#define LOGW ALOGW
-#endif
#endif
#ifndef ALOGW_IF
@@ -162,10 +134,6 @@
( (CONDITION(cond)) \
? ((void)ALOG(LOG_WARN, LOG_TAG, __VA_ARGS__)) \
: (void)0 )
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGW_IF
-#define LOGW_IF ALOGW_IF
-#endif
#endif
/*
@@ -173,10 +141,6 @@
*/
#ifndef ALOGE
#define ALOGE(...) ((void)ALOG(LOG_ERROR, LOG_TAG, __VA_ARGS__))
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGE
-#define LOGE ALOGE
-#endif
#endif
#ifndef ALOGE_IF
@@ -184,10 +148,6 @@
( (CONDITION(cond)) \
? ((void)ALOG(LOG_ERROR, LOG_TAG, __VA_ARGS__)) \
: (void)0 )
-// Temporary measure for code still using old LOG macros.
-#ifndef LOGE_IF
-#define LOGE_IF ALOGE_IF
-#endif
#endif
// ---------------------------------------------------------------------
@@ -202,10 +162,6 @@
#else
#define IF_ALOGV() IF_ALOG(LOG_VERBOSE, LOG_TAG)
#endif
-// Temporary measure for code still using old LOG macros.
-#ifndef IF_LOGV
-#define IF_LOGV IF_ALOGV
-#endif
#endif
/*
@@ -214,10 +170,6 @@
*/
#ifndef IF_ALOGD
#define IF_ALOGD() IF_ALOG(LOG_DEBUG, LOG_TAG)
-// Temporary measure for code still using old LOG macros.
-#ifndef IF_LOGD
-#define IF_LOGD IF_ALOGD
-#endif
#endif
/*
@@ -226,10 +178,6 @@
*/
#ifndef IF_ALOGI
#define IF_ALOGI() IF_ALOG(LOG_INFO, LOG_TAG)
-// Temporary measure for code still using old LOG macros.
-#ifndef IF_LOGI
-#define IF_LOGI IF_ALOGI
-#endif
#endif
/*
@@ -238,10 +186,6 @@
*/
#ifndef IF_ALOGW
#define IF_ALOGW() IF_ALOG(LOG_WARN, LOG_TAG)
-// Temporary measure for code still using old LOG macros.
-#ifndef IF_LOGW
-#define IF_LOGW IF_ALOGW
-#endif
#endif
/*
@@ -250,10 +194,6 @@
*/
#ifndef IF_ALOGE
#define IF_ALOGE() IF_ALOG(LOG_ERROR, LOG_TAG)
-// Temporary measure for code still using old LOG macros.
-#ifndef IF_LOGE
-#define IF_LOGE IF_ALOGE
-#endif
#endif
@@ -392,10 +332,6 @@
#ifndef ALOG_ASSERT
#define ALOG_ASSERT(cond, ...) LOG_FATAL_IF(!(cond), ## __VA_ARGS__)
//#define ALOG_ASSERT(cond) LOG_FATAL_IF(!(cond), "Assertion failed: " #cond)
-// Temporary measure for code still using old LOG macros.
-#ifndef LOG_ASSERT
-#define LOG_ASSERT ALOG_ASSERT
-#endif
#endif
// ---------------------------------------------------------------------
@@ -411,10 +347,6 @@
#ifndef ALOG
#define ALOG(priority, tag, ...) \
LOG_PRI(ANDROID_##priority, tag, __VA_ARGS__)
-// Temporary measure for code still using old LOG macros.
-#ifndef LOG
-#define LOG ALOG
-#endif
#endif
/*
@@ -439,10 +371,6 @@
#ifndef IF_ALOG
#define IF_ALOG(priority, tag) \
if (android_testLog(ANDROID_##priority, tag))
-// Temporary measure for code still using old LOG macros.
-#ifndef IF_LOG
-#define IF_LOG IF_ALOG
-#endif
#endif
// ---------------------------------------------------------------------
diff --git a/include/cutils/tztime.h b/include/cutils/tztime.h
index cf103ca..36ac25d 100644
--- a/include/cutils/tztime.h
+++ b/include/cutils/tztime.h
@@ -26,8 +26,14 @@
time_t mktime_tz(struct tm * const tmp, char const * tz);
void localtime_tz(const time_t * const timep, struct tm * tmp, const char* tz);
-#ifndef HAVE_ANDROID_OS
-/* the following is defined in <time.h> in Bionic */
+#ifdef HAVE_ANDROID_OS
+
+/* the following is defined in the Bionic C library on Android, but the
+ * declarations are only available through a platform-private header
+ */
+#include <bionic_time.h>
+
+#else /* !HAVE_ANDROID_OS */
struct strftime_locale {
const char *mon[12]; /* short names */
diff --git a/include/ion/ion.h b/include/ion/ion.h
new file mode 100644
index 0000000..879eab3
--- /dev/null
+++ b/include/ion/ion.h
@@ -0,0 +1,32 @@
+/*
+ * ion.c
+ *
+ * Memory Allocator functions for ion
+ *
+ * Copyright 2011 Google, Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <linux/ion.h>
+
+int ion_open();
+int ion_close(int fd);
+int ion_alloc(int fd, size_t len, size_t align, unsigned int flags,
+ struct ion_handle **handle);
+int ion_free(int fd, struct ion_handle *handle);
+int ion_map(int fd, struct ion_handle *handle, size_t length, int prot,
+ int flags, off_t offset, unsigned char **ptr, int *map_fd);
+int ion_share(int fd, struct ion_handle *handle, int *share_fd);
+int ion_import(int fd, int share_fd, struct ion_handle **handle);
+
diff --git a/include/private/android_filesystem_config.h b/include/private/android_filesystem_config.h
index ce1e55d..0344b5c 100644
--- a/include/private/android_filesystem_config.h
+++ b/include/private/android_filesystem_config.h
@@ -79,7 +79,12 @@
#define AID_MISC 9998 /* access to misc storage */
#define AID_NOBODY 9999
-#define AID_APP 10000 /* first app user */
+#define AID_APP 10000 /* first app user */
+
+#define AID_ISOLATED_START 99000 /* start of uids for fully isolated sandboxed processes */
+#define AID_ISOLATED_END 99999 /* end of uids for fully isolated sandboxed processes */
+
+#define AID_USER 100000 /* offset for uid ranges for each user */
#if !defined(EXCLUDE_FS_CONFIG_STRUCTURES)
struct android_id_info {
diff --git a/include/system/audio.h b/include/system/audio.h
index 52ba5e7..0f19101 100644
--- a/include/system/audio.h
+++ b/include/system/audio.h
@@ -382,7 +382,7 @@
return false;
}
-static inline bool audio_is_valid_format(uint32_t format)
+static inline bool audio_is_valid_format(audio_format_t format)
{
switch (format & AUDIO_FORMAT_MAIN_MASK) {
case AUDIO_FORMAT_PCM:
@@ -403,12 +403,12 @@
}
}
-static inline bool audio_is_linear_pcm(uint32_t format)
+static inline bool audio_is_linear_pcm(audio_format_t format)
{
return ((format & AUDIO_FORMAT_MAIN_MASK) == AUDIO_FORMAT_PCM);
}
-static inline size_t audio_bytes_per_sample(uint32_t format)
+static inline size_t audio_bytes_per_sample(audio_format_t format)
{
size_t size = 0;
diff --git a/include/system/camera.h b/include/system/camera.h
index cdfa256..62167cf 100644
--- a/include/system/camera.h
+++ b/include/system/camera.h
@@ -85,6 +85,9 @@
// request FRAME and METADATA. Or the apps can request only FRAME or only
// METADATA.
CAMERA_MSG_PREVIEW_METADATA = 0x0400, // dataCallback
+ // Notify on autofocus start and stop. This is useful in continuous
+ // autofocus - FOCUS_MODE_CONTINUOUS_VIDEO and FOCUS_MODE_CONTINUOUS_PICTURE.
+ CAMERA_MSG_FOCUS_MOVE = 0x0800, // notifyCallback
CAMERA_MSG_ALL_MSGS = 0xFFFF
};
@@ -142,6 +145,12 @@
* Stop the face detection.
*/
CAMERA_CMD_STOP_FACE_DETECTION = 7,
+
+ /**
+ * Enable/disable focus move callback (CAMERA_MSG_FOCUS_MOVE). Passing
+ * arg1 = 0 will disable, while passing arg1 = 1 will enable the callback.
+ */
+ CAMERA_CMD_ENABLE_FOCUS_MOVE_MSG = 8,
};
/** camera fatal errors */
diff --git a/init/Android.mk b/init/Android.mk
index e9fd884..b456e43 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -22,6 +22,10 @@
LOCAL_CFLAGS += -DBOOTCHART=1
endif
+ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
+LOCAL_CFLAGS += -DALLOW_LOCAL_PROP_OVERRIDE=1
+endif
+
LOCAL_MODULE:= init
LOCAL_FORCE_STATIC_EXECUTABLE := true
diff --git a/init/property_service.c b/init/property_service.c
index 059db97..0e3c25b 100644
--- a/init/property_service.c
+++ b/init/property_service.c
@@ -338,21 +338,6 @@
return 0;
}
-static int property_list(void (*propfn)(const char *key, const char *value, void *cookie),
- void *cookie)
-{
- char name[PROP_NAME_MAX];
- char value[PROP_VALUE_MAX];
- const prop_info *pi;
- unsigned n;
-
- for(n = 0; (pi = __system_property_find_nth(n)); n++) {
- __system_property_read(pi, name, value);
- propfn(name, value, cookie);
- }
- return 0;
-}
-
void handle_property_set_fd()
{
prop_msg msg;
@@ -527,7 +512,9 @@
*/
void load_persist_props(void)
{
+#ifdef ALLOW_LOCAL_PROP_OVERRIDE
load_properties_from_file(PROP_PATH_LOCAL_OVERRIDE);
+#endif /* ALLOW_LOCAL_PROP_OVERRIDE */
/* Read persistent properties after all default values have been loaded. */
load_persistent_properties();
}
@@ -538,7 +525,9 @@
load_properties_from_file(PROP_PATH_SYSTEM_BUILD);
load_properties_from_file(PROP_PATH_SYSTEM_DEFAULT);
+#ifdef ALLOW_LOCAL_PROP_OVERRIDE
load_properties_from_file(PROP_PATH_LOCAL_OVERRIDE);
+#endif /* ALLOW_LOCAL_PROP_OVERRIDE */
/* Read persistent properties after all default values have been loaded. */
load_persistent_properties();
diff --git a/init/util.c b/init/util.c
index 3a4b10b..7d79f39 100755
--- a/init/util.c
+++ b/init/util.c
@@ -151,11 +151,23 @@
char *data;
int sz;
int fd;
+ struct stat sb;
data = 0;
fd = open(fn, O_RDONLY);
if(fd < 0) return 0;
+ // for security reasons, disallow world-writable
+ // or group-writable files
+ if (fstat(fd, &sb) < 0) {
+ ERROR("fstat failed for '%s'\n", fn);
+ goto oops;
+ }
+ if ((sb.st_mode & (S_IWGRP | S_IWOTH)) != 0) {
+ ERROR("skipping insecure file '%s'\n", fn);
+ goto oops;
+ }
+
sz = lseek(fd, 0, SEEK_END);
if(sz < 0) goto oops;
diff --git a/libcorkscrew/Android.mk b/libcorkscrew/Android.mk
new file mode 100644
index 0000000..433f93c
--- /dev/null
+++ b/libcorkscrew/Android.mk
@@ -0,0 +1,46 @@
+# Copyright (C) 2011 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+ backtrace.c \
+ backtrace-helper.c \
+ demangle.c \
+ map_info.c \
+ ptrace.c \
+ symbol_table.c
+
+ifeq ($(TARGET_ARCH),arm)
+LOCAL_SRC_FILES += \
+ arch-arm/backtrace-arm.c \
+ arch-arm/ptrace-arm.c
+LOCAL_CFLAGS += -DCORKSCREW_HAVE_ARCH
+endif
+ifeq ($(TARGET_ARCH),x86)
+LOCAL_SRC_FILES += \
+ arch-x86/backtrace-x86.c \
+ arch-x86/ptrace-x86.c
+LOCAL_CFLAGS += -DCORKSCREW_HAVE_ARCH
+endif
+
+LOCAL_SHARED_LIBRARIES += libdl libcutils libgccdemangle
+
+LOCAL_CFLAGS += -std=gnu99 -Werror
+LOCAL_MODULE := libcorkscrew
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/libcorkscrew/MODULE_LICENSE_APACHE2 b/libcorkscrew/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libcorkscrew/MODULE_LICENSE_APACHE2
diff --git a/libcorkscrew/NOTICE b/libcorkscrew/NOTICE
new file mode 100644
index 0000000..becc120
--- /dev/null
+++ b/libcorkscrew/NOTICE
@@ -0,0 +1,190 @@
+
+ Copyright (c) 2011, The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
diff --git a/libcorkscrew/arch-arm/backtrace-arm.c b/libcorkscrew/arch-arm/backtrace-arm.c
new file mode 100644
index 0000000..5b91164
--- /dev/null
+++ b/libcorkscrew/arch-arm/backtrace-arm.c
@@ -0,0 +1,589 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Backtracing functions for ARM.
+ *
+ * This implementation uses the exception unwinding tables provided by
+ * the compiler to unwind call frames. Refer to the ARM Exception Handling ABI
+ * documentation (EHABI) for more details about what's going on here.
+ *
+ * An ELF binary may contain an EXIDX section that provides an index to
+ * the exception handling table of each function, sorted by program
+ * counter address.
+ *
+ * This implementation also supports unwinding other processes via ptrace().
+ * In that case, the EXIDX section is found by reading the ELF section table
+ * structures using ptrace().
+ *
+ * Because the tables are used for exception handling, it can happen that
+ * a given function will not have an exception handling table. In particular,
+ * exceptions are assumed to only ever be thrown at call sites. Therefore,
+ * by definition leaf functions will not have exception handling tables.
+ * This may make unwinding impossible in some cases although we can still get
+ * some idea of the call stack by examining the PC and LR registers.
+ *
+ * As we are only interested in backtrace information, we do not need
+ * to perform all of the work of unwinding such as restoring register
+ * state and running cleanup functions. Unwinding is performed virtually on
+ * an abstract machine context consisting of just the ARM core registers.
+ * Furthermore, we do not run generic "personality functions" because
+ * we may not be in a position to execute arbitrary code, especially if
+ * we are running in a signal handler or using ptrace()!
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include "../backtrace-arch.h"
+#include "../backtrace-helper.h"
+#include "../ptrace-arch.h"
+#include <corkscrew/ptrace.h>
+
+#include <stdlib.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/ptrace.h>
+#include <sys/exec_elf.h>
+#include <cutils/log.h>
+
+/* Machine context at the time a signal was raised. */
+typedef struct ucontext {
+ uint32_t uc_flags;
+ struct ucontext* uc_link;
+ stack_t uc_stack;
+ struct sigcontext {
+ uint32_t trap_no;
+ uint32_t error_code;
+ uint32_t oldmask;
+ uint32_t gregs[16];
+ uint32_t arm_cpsr;
+ uint32_t fault_address;
+ } uc_mcontext;
+ uint32_t uc_sigmask;
+} ucontext_t;
+
+/* Unwind state. */
+typedef struct {
+ uint32_t gregs[16];
+} unwind_state_t;
+
+static const int R_SP = 13;
+static const int R_LR = 14;
+static const int R_PC = 15;
+
+/* Special EXIDX value that indicates that a frame cannot be unwound. */
+static const uint32_t EXIDX_CANTUNWIND = 1;
+
+/* Get the EXIDX section start and size for the module that contains a
+ * given program counter address.
+ *
+ * When the executable is statically linked, the EXIDX section can be
+ * accessed by querying the values of the __exidx_start and __exidx_end
+ * symbols.
+ *
+ * When the executable is dynamically linked, the linker exports a function
+ * called dl_unwind_find_exidx that obtains the EXIDX section for a given
+ * absolute program counter address.
+ *
+ * Bionic exports a helpful function called __gnu_Unwind_Find_exidx that
+ * handles both cases, so we use that here.
+ */
+typedef long unsigned int* _Unwind_Ptr;
+extern _Unwind_Ptr __gnu_Unwind_Find_exidx(_Unwind_Ptr pc, int *pcount);
+
+static uintptr_t find_exidx(uintptr_t pc, size_t* out_exidx_size) {
+ int count;
+ uintptr_t start = (uintptr_t)__gnu_Unwind_Find_exidx((_Unwind_Ptr)pc, &count);
+ *out_exidx_size = count;
+ return start;
+}
+
+/* Transforms a 31-bit place-relative offset to an absolute address.
+ * We assume the most significant bit is clear. */
+static uintptr_t prel_to_absolute(uintptr_t place, uint32_t prel_offset) {
+ return place + (((int32_t)(prel_offset << 1)) >> 1);
+}
+
+static uintptr_t get_exception_handler(const memory_t* memory,
+ const map_info_t* map_info_list, uintptr_t pc) {
+ if (!pc) {
+ ALOGV("get_exception_handler: pc is zero, no handler");
+ return 0;
+ }
+
+ uintptr_t exidx_start;
+ size_t exidx_size;
+ const map_info_t* mi;
+ if (memory->tid < 0) {
+ mi = NULL;
+ exidx_start = find_exidx(pc, &exidx_size);
+ } else {
+ mi = find_map_info(map_info_list, pc);
+ if (mi && mi->data) {
+ const map_info_data_t* data = (const map_info_data_t*)mi->data;
+ exidx_start = data->exidx_start;
+ exidx_size = data->exidx_size;
+ } else {
+ exidx_start = 0;
+ exidx_size = 0;
+ }
+ }
+
+ uintptr_t handler = 0;
+ int32_t handler_index = -1;
+ if (exidx_start) {
+ uint32_t low = 0;
+ uint32_t high = exidx_size;
+ while (low < high) {
+ uint32_t index = (low + high) / 2;
+ uintptr_t entry = exidx_start + index * 8;
+ uint32_t entry_prel_pc;
+ ALOGV("XXX low=%u, high=%u, index=%u", low, high, index);
+ if (!try_get_word(memory, entry, &entry_prel_pc)) {
+ break;
+ }
+ uintptr_t entry_pc = prel_to_absolute(entry, entry_prel_pc);
+ ALOGV("XXX entry_pc=0x%08x", entry_pc);
+ if (pc < entry_pc) {
+ high = index;
+ continue;
+ }
+ if (index + 1 < exidx_size) {
+ uintptr_t next_entry = entry + 8;
+ uint32_t next_entry_prel_pc;
+ if (!try_get_word(memory, next_entry, &next_entry_prel_pc)) {
+ break;
+ }
+ uintptr_t next_entry_pc = prel_to_absolute(next_entry, next_entry_prel_pc);
+ ALOGV("XXX next_entry_pc=0x%08x", next_entry_pc);
+ if (pc >= next_entry_pc) {
+ low = index + 1;
+ continue;
+ }
+ }
+
+ uintptr_t entry_handler_ptr = entry + 4;
+ uint32_t entry_handler;
+ if (!try_get_word(memory, entry_handler_ptr, &entry_handler)) {
+ break;
+ }
+ if (entry_handler & (1L << 31)) {
+ handler = entry_handler_ptr; // in-place handler data
+ } else if (entry_handler != EXIDX_CANTUNWIND) {
+ handler = prel_to_absolute(entry_handler_ptr, entry_handler);
+ }
+ handler_index = index;
+ break;
+ }
+ }
+ if (mi) {
+ ALOGV("get_exception_handler: pc=0x%08x, module='%s', module_start=0x%08x, "
+ "exidx_start=0x%08x, exidx_size=%d, handler=0x%08x, handler_index=%d",
+ pc, mi->name, mi->start, exidx_start, exidx_size, handler, handler_index);
+ } else {
+ ALOGV("get_exception_handler: pc=0x%08x, "
+ "exidx_start=0x%08x, exidx_size=%d, handler=0x%08x, handler_index=%d",
+ pc, exidx_start, exidx_size, handler, handler_index);
+ }
+ return handler;
+}
+
+typedef struct {
+ uintptr_t ptr;
+ uint32_t word;
+} byte_stream_t;
+
+static bool try_next_byte(const memory_t* memory, byte_stream_t* stream, uint8_t* out_value) {
+ uint8_t result;
+ switch (stream->ptr & 3) {
+ case 0:
+ if (!try_get_word(memory, stream->ptr, &stream->word)) {
+ *out_value = 0;
+ return false;
+ }
+ *out_value = stream->word >> 24;
+ break;
+
+ case 1:
+ *out_value = stream->word >> 16;
+ break;
+
+ case 2:
+ *out_value = stream->word >> 8;
+ break;
+
+ default:
+ *out_value = stream->word;
+ break;
+ }
+
+ ALOGV("next_byte: ptr=0x%08x, value=0x%02x", stream->ptr, *out_value);
+ stream->ptr += 1;
+ return true;
+}
+
+static void set_reg(unwind_state_t* state, uint32_t reg, uint32_t value) {
+ ALOGV("set_reg: reg=%d, value=0x%08x", reg, value);
+ state->gregs[reg] = value;
+}
+
+static bool try_pop_registers(const memory_t* memory, unwind_state_t* state, uint32_t mask) {
+ uint32_t sp = state->gregs[R_SP];
+ bool sp_updated = false;
+ for (int i = 0; i < 16; i++) {
+ if (mask & (1 << i)) {
+ uint32_t value;
+ if (!try_get_word(memory, sp, &value)) {
+ return false;
+ }
+ if (i == R_SP) {
+ sp_updated = true;
+ }
+ set_reg(state, i, value);
+ sp += 4;
+ }
+ }
+ if (!sp_updated) {
+ set_reg(state, R_SP, sp);
+ }
+ return true;
+}
+
+/* Executes a built-in personality routine as defined in the EHABI.
+ * Returns true if unwinding should continue.
+ *
+ * The data for the built-in personality routines consists of a sequence
+ * of unwinding instructions, followed by a sequence of scope descriptors,
+ * each of which has a length and offset encoded using 16-bit or 32-bit
+ * values.
+ *
+ * We only care about the unwinding instructions. They specify the
+ * operations of an abstract machine whose purpose is to transform the
+ * virtual register state (including the stack pointer) such that
+ * the call frame is unwound and the PC register points to the call site.
+ */
+static bool execute_personality_routine(const memory_t* memory,
+ unwind_state_t* state, byte_stream_t* stream, int pr_index) {
+ size_t size;
+ switch (pr_index) {
+ case 0: // Personality routine #0, short frame, descriptors have 16-bit scope.
+ size = 3;
+ break;
+ case 1: // Personality routine #1, long frame, descriptors have 16-bit scope.
+ case 2: { // Personality routine #2, long frame, descriptors have 32-bit scope.
+ uint8_t size_byte;
+ if (!try_next_byte(memory, stream, &size_byte)) {
+ return false;
+ }
+ size = (uint32_t)size_byte * sizeof(uint32_t) + 2;
+ break;
+ }
+ default: // Unknown personality routine. Stop here.
+ return false;
+ }
+
+ bool pc_was_set = false;
+ while (size--) {
+ uint8_t op;
+ if (!try_next_byte(memory, stream, &op)) {
+ return false;
+ }
+ if ((op & 0xc0) == 0x00) {
+ // "vsp = vsp + (xxxxxx << 2) + 4"
+ set_reg(state, R_SP, state->gregs[R_SP] + ((op & 0x3f) << 2) + 4);
+ } else if ((op & 0xc0) == 0x40) {
+ // "vsp = vsp - (xxxxxx << 2) - 4"
+ set_reg(state, R_SP, state->gregs[R_SP] - ((op & 0x3f) << 2) - 4);
+ } else if ((op & 0xf0) == 0x80) {
+ uint8_t op2;
+ if (!(size--) || !try_next_byte(memory, stream, &op2)) {
+ return false;
+ }
+ uint32_t mask = (((uint32_t)op & 0x0f) << 12) | ((uint32_t)op2 << 4);
+ if (mask) {
+ // "Pop up to 12 integer registers under masks {r15-r12}, {r11-r4}"
+ if (!try_pop_registers(memory, state, mask)) {
+ return false;
+ }
+ if (mask & (1 << R_PC)) {
+ pc_was_set = true;
+ }
+ } else {
+ // "Refuse to unwind"
+ return false;
+ }
+ } else if ((op & 0xf0) == 0x90) {
+ if (op != 0x9d && op != 0x9f) {
+ // "Set vsp = r[nnnn]"
+ set_reg(state, R_SP, state->gregs[op & 0x0f]);
+ } else {
+ // "Reserved as prefix for ARM register to register moves"
+ // "Reserved as prefix for Intel Wireless MMX register to register moves"
+ return false;
+ }
+ } else if ((op & 0xf8) == 0xa0) {
+ // "Pop r4-r[4+nnn]"
+ uint32_t mask = (0x0ff0 >> (7 - (op & 0x07))) & 0x0ff0;
+ if (!try_pop_registers(memory, state, mask)) {
+ return false;
+ }
+ } else if ((op & 0xf8) == 0xa8) {
+ // "Pop r4-r[4+nnn], r14"
+ uint32_t mask = ((0x0ff0 >> (7 - (op & 0x07))) & 0x0ff0) | 0x4000;
+ if (!try_pop_registers(memory, state, mask)) {
+ return false;
+ }
+ } else if (op == 0xb0) {
+ // "Finish"
+ break;
+ } else if (op == 0xb1) {
+ uint8_t op2;
+ if (!(size--) || !try_next_byte(memory, stream, &op2)) {
+ return false;
+ }
+ if (op2 != 0x00 && (op2 & 0xf0) == 0x00) {
+ // "Pop integer registers under mask {r3, r2, r1, r0}"
+ if (!try_pop_registers(memory, state, op2)) {
+ return false;
+ }
+ } else {
+ // "Spare"
+ return false;
+ }
+ } else if (op == 0xb2) {
+ // "vsp = vsp + 0x204 + (uleb128 << 2)"
+ uint32_t value = 0;
+ uint32_t shift = 0;
+ uint8_t op2;
+ do {
+ if (!(size--) || !try_next_byte(memory, stream, &op2)) {
+ return false;
+ }
+ value |= (op2 & 0x7f) << shift;
+ shift += 7;
+ } while (op2 & 0x80);
+ set_reg(state, R_SP, state->gregs[R_SP] + (value << 2) + 0x204);
+ } else if (op == 0xb3) {
+ // "Pop VFP double-precision registers D[ssss]-D[ssss+cccc] saved (as if) by FSTMFDX"
+ uint8_t op2;
+ if (!(size--) || !try_next_byte(memory, stream, &op2)) {
+ return false;
+ }
+ set_reg(state, R_SP, state->gregs[R_SP] + (uint32_t)(op2 & 0x0f) * 8 + 12);
+ } else if ((op & 0xf8) == 0xb8) {
+ // "Pop VFP double-precision registers D[8]-D[8+nnn] saved (as if) by FSTMFDX"
+ set_reg(state, R_SP, state->gregs[R_SP] + (uint32_t)(op & 0x07) * 8 + 12);
+ } else if ((op & 0xf8) == 0xc0) {
+ // "Intel Wireless MMX pop wR[10]-wR[10+nnn]"
+ set_reg(state, R_SP, state->gregs[R_SP] + (uint32_t)(op & 0x07) * 8 + 8);
+ } else if (op == 0xc6) {
+ // "Intel Wireless MMX pop wR[ssss]-wR[ssss+cccc]"
+ uint8_t op2;
+ if (!(size--) || !try_next_byte(memory, stream, &op2)) {
+ return false;
+ }
+ set_reg(state, R_SP, state->gregs[R_SP] + (uint32_t)(op2 & 0x0f) * 8 + 8);
+ } else if (op == 0xc7) {
+ uint8_t op2;
+ if (!(size--) || !try_next_byte(memory, stream, &op2)) {
+ return false;
+ }
+ if (op2 != 0x00 && (op2 & 0xf0) == 0x00) {
+ // "Intel Wireless MMX pop wCGR registers under mask {wCGR3,2,1,0}"
+ set_reg(state, R_SP, state->gregs[R_SP] + __builtin_popcount(op2) * 4);
+ } else {
+ // "Spare"
+ return false;
+ }
+ } else if (op == 0xc8) {
+ // "Pop VFP double precision registers D[16+ssss]-D[16+ssss+cccc]
+ // saved (as if) by FSTMFD"
+ uint8_t op2;
+ if (!(size--) || !try_next_byte(memory, stream, &op2)) {
+ return false;
+ }
+ set_reg(state, R_SP, state->gregs[R_SP] + (uint32_t)(op2 & 0x0f) * 8 + 8);
+ } else if (op == 0xc9) {
+ // "Pop VFP double precision registers D[ssss]-D[ssss+cccc] saved (as if) by FSTMFDD"
+ uint8_t op2;
+ if (!(size--) || !try_next_byte(memory, stream, &op2)) {
+ return false;
+ }
+ set_reg(state, R_SP, state->gregs[R_SP] + (uint32_t)(op2 & 0x0f) * 8 + 8);
+ } else if ((op == 0xf8) == 0xd0) {
+ // "Pop VFP double-precision registers D[8]-D[8+nnn] saved (as if) by FSTMFDD"
+ set_reg(state, R_SP, state->gregs[R_SP] + (uint32_t)(op & 0x07) * 8 + 8);
+ } else {
+ // "Spare"
+ return false;
+ }
+ }
+ if (!pc_was_set) {
+ set_reg(state, R_PC, state->gregs[R_LR]);
+ }
+ return true;
+}
+
+static bool try_get_half_word(const memory_t* memory, uint32_t pc, uint16_t* out_value) {
+ uint32_t word;
+ if (try_get_word(memory, pc & ~2, &word)) {
+ *out_value = pc & 2 ? word >> 16 : word & 0xffff;
+ return true;
+ }
+ return false;
+}
+
+uintptr_t rewind_pc_arch(const memory_t* memory, uintptr_t pc) {
+ if (pc & 1) {
+ /* Thumb mode - need to check whether the bl(x) has long offset or not.
+ * Examples:
+ *
+ * arm blx in the middle of thumb:
+ * 187ae: 2300 movs r3, #0
+ * 187b0: f7fe ee1c blx 173ec
+ * 187b4: 2c00 cmp r4, #0
+ *
+ * arm bl in the middle of thumb:
+ * 187d8: 1c20 adds r0, r4, #0
+ * 187da: f136 fd15 bl 14f208
+ * 187de: 2800 cmp r0, #0
+ *
+ * pure thumb:
+ * 18894: 189b adds r3, r3, r2
+ * 18896: 4798 blx r3
+ * 18898: b001 add sp, #4
+ */
+ uint16_t prev1, prev2;
+ if (try_get_half_word(memory, pc - 5, &prev1)
+ && ((prev1 & 0xf000) == 0xf000)
+ && try_get_half_word(memory, pc - 3, &prev2)
+ && ((prev2 & 0xe000) == 0xe000)) {
+ pc -= 4; // long offset
+ } else {
+ pc -= 2;
+ }
+ } else {
+ /* ARM mode, all instructions are 32bit. Yay! */
+ pc -= 4;
+ }
+ return pc;
+}
+
+static ssize_t unwind_backtrace_common(const memory_t* memory,
+ const map_info_t* map_info_list,
+ unwind_state_t* state, backtrace_frame_t* backtrace,
+ size_t ignore_depth, size_t max_depth) {
+ size_t ignored_frames = 0;
+ size_t returned_frames = 0;
+
+ for (size_t index = 0; returned_frames < max_depth; index++) {
+ uintptr_t pc = index ? rewind_pc_arch(memory, state->gregs[R_PC])
+ : state->gregs[R_PC];
+ backtrace_frame_t* frame = add_backtrace_entry(pc,
+ backtrace, ignore_depth, max_depth, &ignored_frames, &returned_frames);
+ if (frame) {
+ frame->stack_top = state->gregs[R_SP];
+ }
+
+ uintptr_t handler = get_exception_handler(memory, map_info_list, pc);
+ if (!handler) {
+ // If there is no handler for the PC and this is the first frame,
+ // then the program may have branched to an invalid address.
+ // Try starting from the LR instead, otherwise stop unwinding.
+ if (index == 0 && state->gregs[R_LR]
+ && state->gregs[R_LR] != state->gregs[R_PC]) {
+ set_reg(state, R_PC, state->gregs[R_LR]);
+ continue;
+ } else {
+ break;
+ }
+ }
+
+ byte_stream_t stream;
+ stream.ptr = handler;
+ uint8_t pr;
+ if (!try_next_byte(memory, &stream, &pr)) {
+ break;
+ }
+ if ((pr & 0xf0) != 0x80) {
+ // The first word is a place-relative pointer to a generic personality
+ // routine function. We don't support invoking such functions, so stop here.
+ break;
+ }
+
+ // The first byte indicates the personality routine to execute.
+ // Following bytes provide instructions to the personality routine.
+ if (!execute_personality_routine(memory, state, &stream, pr & 0x0f)) {
+ break;
+ }
+ if (frame && state->gregs[R_SP] > frame->stack_top) {
+ frame->stack_size = state->gregs[R_SP] - frame->stack_top;
+ }
+ if (!state->gregs[R_PC]) {
+ break;
+ }
+ }
+
+ // Ran out of frames that we could unwind using handlers.
+ // Add a final entry for the LR if it looks sane and call it good.
+ if (returned_frames < max_depth
+ && state->gregs[R_LR]
+ && state->gregs[R_LR] != state->gregs[R_PC]
+ && is_executable_map(map_info_list, state->gregs[R_LR])) {
+ // We don't know where the stack for this extra frame starts so we
+ // don't return any stack information for it.
+ add_backtrace_entry(rewind_pc_arch(memory, state->gregs[R_LR]),
+ backtrace, ignore_depth, max_depth, &ignored_frames, &returned_frames);
+ }
+ return returned_frames;
+}
+
+ssize_t unwind_backtrace_signal_arch(siginfo_t* siginfo, void* sigcontext,
+ const map_info_t* map_info_list,
+ backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth) {
+ const ucontext_t* uc = (const ucontext_t*)sigcontext;
+
+ unwind_state_t state;
+ for (int i = 0; i < 16; i++) {
+ state.gregs[i] = uc->uc_mcontext.gregs[i];
+ }
+
+ memory_t memory;
+ init_memory(&memory, map_info_list);
+ return unwind_backtrace_common(&memory, map_info_list, &state,
+ backtrace, ignore_depth, max_depth);
+}
+
+ssize_t unwind_backtrace_ptrace_arch(pid_t tid, const ptrace_context_t* context,
+ backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth) {
+ struct pt_regs regs;
+ if (ptrace(PTRACE_GETREGS, tid, 0, ®s)) {
+ return -1;
+ }
+
+ unwind_state_t state;
+ for (int i = 0; i < 16; i++) {
+ state.gregs[i] = regs.uregs[i];
+ }
+
+ memory_t memory;
+ init_memory_ptrace(&memory, tid);
+ return unwind_backtrace_common(&memory, context->map_info_list, &state,
+ backtrace, ignore_depth, max_depth);
+}
diff --git a/libcorkscrew/arch-arm/ptrace-arm.c b/libcorkscrew/arch-arm/ptrace-arm.c
new file mode 100644
index 0000000..868230c
--- /dev/null
+++ b/libcorkscrew/arch-arm/ptrace-arm.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include "../ptrace-arch.h"
+
+#include <sys/exec_elf.h>
+#include <cutils/log.h>
+
+#ifndef PT_ARM_EXIDX
+#define PT_ARM_EXIDX 0x70000001
+#endif
+
+static void load_exidx_header(pid_t pid, map_info_t* mi,
+ uintptr_t* out_exidx_start, size_t* out_exidx_size) {
+ uint32_t elf_phoff;
+ uint32_t elf_phentsize_phnum;
+ if (try_get_word_ptrace(pid, mi->start + offsetof(Elf32_Ehdr, e_phoff), &elf_phoff)
+ && try_get_word_ptrace(pid, mi->start + offsetof(Elf32_Ehdr, e_phnum),
+ &elf_phentsize_phnum)) {
+ uint32_t elf_phentsize = elf_phentsize_phnum >> 16;
+ uint32_t elf_phnum = elf_phentsize_phnum & 0xffff;
+ for (uint32_t i = 0; i < elf_phnum; i++) {
+ uintptr_t elf_phdr = mi->start + elf_phoff + i * elf_phentsize;
+ uint32_t elf_phdr_type;
+ if (!try_get_word_ptrace(pid, elf_phdr + offsetof(Elf32_Phdr, p_type), &elf_phdr_type)) {
+ break;
+ }
+ if (elf_phdr_type == PT_ARM_EXIDX) {
+ uint32_t elf_phdr_offset;
+ uint32_t elf_phdr_filesz;
+ if (!try_get_word_ptrace(pid, elf_phdr + offsetof(Elf32_Phdr, p_offset),
+ &elf_phdr_offset)
+ || !try_get_word_ptrace(pid, elf_phdr + offsetof(Elf32_Phdr, p_filesz),
+ &elf_phdr_filesz)) {
+ break;
+ }
+ *out_exidx_start = mi->start + elf_phdr_offset;
+ *out_exidx_size = elf_phdr_filesz / 8;
+ ALOGV("Parsed EXIDX header info for %s: start=0x%08x, size=%d", mi->name,
+ *out_exidx_start, *out_exidx_size);
+ return;
+ }
+ }
+ }
+ *out_exidx_start = 0;
+ *out_exidx_size = 0;
+}
+
+void load_ptrace_map_info_data_arch(pid_t pid, map_info_t* mi, map_info_data_t* data) {
+ load_exidx_header(pid, mi, &data->exidx_start, &data->exidx_size);
+}
+
+void free_ptrace_map_info_data_arch(map_info_t* mi, map_info_data_t* data) {
+}
diff --git a/libcorkscrew/arch-x86/backtrace-x86.c b/libcorkscrew/arch-x86/backtrace-x86.c
new file mode 100644
index 0000000..24fadcb
--- /dev/null
+++ b/libcorkscrew/arch-x86/backtrace-x86.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Backtracing functions for x86.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include "../backtrace-arch.h"
+#include "../backtrace-helper.h"
+#include <corkscrew/ptrace.h>
+
+#include <stdlib.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/ptrace.h>
+#include <sys/exec_elf.h>
+#include <cutils/log.h>
+
+/* Machine context at the time a signal was raised. */
+typedef struct ucontext {
+ uint32_t uc_flags;
+ struct ucontext* uc_link;
+ stack_t uc_stack;
+ struct sigcontext {
+ uint32_t gs;
+ uint32_t fs;
+ uint32_t es;
+ uint32_t ds;
+ uint32_t edi;
+ uint32_t esi;
+ uint32_t ebp;
+ uint32_t esp;
+ uint32_t ebx;
+ uint32_t edx;
+ uint32_t ecx;
+ uint32_t eax;
+ uint32_t trapno;
+ uint32_t err;
+ uint32_t eip;
+ uint32_t cs;
+ uint32_t efl;
+ uint32_t uesp;
+ uint32_t ss;
+ void* fpregs;
+ uint32_t oldmask;
+ uint32_t cr2;
+ } uc_mcontext;
+ uint32_t uc_sigmask;
+} ucontext_t;
+
+/* Unwind state. */
+typedef struct {
+ uint32_t ebp;
+ uint32_t eip;
+ uint32_t esp;
+} unwind_state_t;
+
+uintptr_t rewind_pc_arch(const memory_t* memory, uintptr_t pc) {
+ // TODO: Implement for x86.
+ return pc;
+}
+
+static ssize_t unwind_backtrace_common(const memory_t* memory,
+ const map_info_t* map_info_list,
+ unwind_state_t* state, backtrace_frame_t* backtrace,
+ size_t ignore_depth, size_t max_depth) {
+ size_t ignored_frames = 0;
+ size_t returned_frames = 0;
+
+ for (size_t index = 0; state->ebp && returned_frames < max_depth; index++) {
+ backtrace_frame_t* frame = add_backtrace_entry(
+ index ? rewind_pc_arch(memory, state->eip) : state->eip,
+ backtrace, ignore_depth, max_depth,
+ &ignored_frames, &returned_frames);
+ uint32_t next_esp = state->ebp + 8;
+ if (frame) {
+ frame->stack_top = state->esp;
+ if (state->esp < next_esp) {
+ frame->stack_size = next_esp - state->esp;
+ }
+ }
+ state->esp = next_esp;
+ if (!try_get_word(memory, state->ebp + 4, &state->eip)
+ || !try_get_word(memory, state->ebp, &state->ebp)
+ || !state->eip) {
+ break;
+ }
+ }
+
+ return returned_frames;
+}
+
+ssize_t unwind_backtrace_signal_arch(siginfo_t* siginfo, void* sigcontext,
+ const map_info_t* map_info_list,
+ backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth) {
+ const ucontext_t* uc = (const ucontext_t*)sigcontext;
+
+ unwind_state_t state;
+ state.ebp = uc->uc_mcontext.ebp;
+ state.eip = uc->uc_mcontext.eip;
+ state.esp = uc->uc_mcontext.esp;
+
+ memory_t memory;
+ init_memory(&memory, map_info_list);
+ return unwind_backtrace_common(&memory, map_info_list,
+ &state, backtrace, ignore_depth, max_depth);
+}
+
+ssize_t unwind_backtrace_ptrace_arch(pid_t tid, const ptrace_context_t* context,
+ backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth) {
+ pt_regs_x86_t regs;
+ if (ptrace(PTRACE_GETREGS, tid, 0, ®s)) {
+ return -1;
+ }
+
+ unwind_state_t state;
+ state.ebp = regs.ebp;
+ state.eip = regs.eip;
+ state.esp = regs.esp;
+
+ memory_t memory;
+ init_memory_ptrace(&memory, tid);
+ return unwind_backtrace_common(&memory, context->map_info_list,
+ &state, backtrace, ignore_depth, max_depth);
+}
diff --git a/libcorkscrew/arch-x86/ptrace-x86.c b/libcorkscrew/arch-x86/ptrace-x86.c
new file mode 100644
index 0000000..f0ea110
--- /dev/null
+++ b/libcorkscrew/arch-x86/ptrace-x86.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include "../ptrace-arch.h"
+
+#include <cutils/log.h>
+
+void load_ptrace_map_info_data_arch(pid_t pid, map_info_t* mi, map_info_data_t* data) {
+}
+
+void free_ptrace_map_info_data_arch(map_info_t* mi, map_info_data_t* data) {
+}
diff --git a/libcorkscrew/backtrace-arch.h b/libcorkscrew/backtrace-arch.h
new file mode 100644
index 0000000..a46f80b
--- /dev/null
+++ b/libcorkscrew/backtrace-arch.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Architecture dependent functions. */
+
+#ifndef _CORKSCREW_BACKTRACE_ARCH_H
+#define _CORKSCREW_BACKTRACE_ARCH_H
+
+#include "ptrace-arch.h"
+#include <corkscrew/backtrace.h>
+
+#include <signal.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Rewind the program counter by one instruction. */
+uintptr_t rewind_pc_arch(const memory_t* memory, uintptr_t pc);
+
+ssize_t unwind_backtrace_signal_arch(siginfo_t* siginfo, void* sigcontext,
+ const map_info_t* map_info_list,
+ backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth);
+
+ssize_t unwind_backtrace_ptrace_arch(pid_t tid, const ptrace_context_t* context,
+ backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CORKSCREW_BACKTRACE_ARCH_H
diff --git a/libcorkscrew/backtrace-helper.c b/libcorkscrew/backtrace-helper.c
new file mode 100644
index 0000000..bf9d3f3
--- /dev/null
+++ b/libcorkscrew/backtrace-helper.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include "backtrace-helper.h"
+
+#include <cutils/log.h>
+
+backtrace_frame_t* add_backtrace_entry(uintptr_t pc, backtrace_frame_t* backtrace,
+ size_t ignore_depth, size_t max_depth,
+ size_t* ignored_frames, size_t* returned_frames) {
+ if (*ignored_frames < ignore_depth) {
+ *ignored_frames += 1;
+ return NULL;
+ }
+ if (*returned_frames >= max_depth) {
+ return NULL;
+ }
+ backtrace_frame_t* frame = &backtrace[*returned_frames];
+ frame->absolute_pc = pc;
+ frame->stack_top = 0;
+ frame->stack_size = 0;
+ *returned_frames += 1;
+ return frame;
+}
diff --git a/libcorkscrew/backtrace-helper.h b/libcorkscrew/backtrace-helper.h
new file mode 100644
index 0000000..4d8a874
--- /dev/null
+++ b/libcorkscrew/backtrace-helper.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Backtrace helper functions. */
+
+#ifndef _CORKSCREW_BACKTRACE_HELPER_H
+#define _CORKSCREW_BACKTRACE_HELPER_H
+
+#include <corkscrew/backtrace.h>
+#include <sys/types.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Add a program counter to a backtrace if it will fit.
+ * Returns the newly added frame, or NULL if none.
+ */
+backtrace_frame_t* add_backtrace_entry(uintptr_t pc,
+ backtrace_frame_t* backtrace,
+ size_t ignore_depth, size_t max_depth,
+ size_t* ignored_frames, size_t* returned_frames);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CORKSCREW_BACKTRACE_HELPER_H
diff --git a/libcorkscrew/backtrace.c b/libcorkscrew/backtrace.c
new file mode 100644
index 0000000..fa21574
--- /dev/null
+++ b/libcorkscrew/backtrace.c
@@ -0,0 +1,305 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include "backtrace-arch.h"
+#include "backtrace-helper.h"
+#include "ptrace-arch.h"
+#include <corkscrew/map_info.h>
+#include <corkscrew/symbol_table.h>
+#include <corkscrew/ptrace.h>
+#include <corkscrew/demangle.h>
+
+#include <unistd.h>
+#include <signal.h>
+#include <pthread.h>
+#include <unwind.h>
+#include <sys/exec_elf.h>
+#include <cutils/log.h>
+#include <cutils/atomic.h>
+
+#if HAVE_DLADDR
+#include <dlfcn.h>
+#endif
+
+typedef struct {
+ backtrace_frame_t* backtrace;
+ size_t ignore_depth;
+ size_t max_depth;
+ size_t ignored_frames;
+ size_t returned_frames;
+ memory_t memory;
+} backtrace_state_t;
+
+static _Unwind_Reason_Code unwind_backtrace_callback(struct _Unwind_Context* context, void* arg) {
+ backtrace_state_t* state = (backtrace_state_t*)arg;
+ uintptr_t pc = _Unwind_GetIP(context);
+ if (pc) {
+ // TODO: Get information about the stack layout from the _Unwind_Context.
+ // This will require a new architecture-specific function to query
+ // the appropriate registers. Current callers of unwind_backtrace
+ // don't need this information, so we won't bother collecting it just yet.
+ add_backtrace_entry(rewind_pc_arch(&state->memory, pc), state->backtrace,
+ state->ignore_depth, state->max_depth,
+ &state->ignored_frames, &state->returned_frames);
+ }
+ return state->returned_frames < state->max_depth ? _URC_NO_REASON : _URC_END_OF_STACK;
+}
+
+ssize_t unwind_backtrace(backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth) {
+ ALOGV("Unwinding current thread %d.", gettid());
+
+ map_info_t* milist = acquire_my_map_info_list();
+
+ backtrace_state_t state;
+ state.backtrace = backtrace;
+ state.ignore_depth = ignore_depth;
+ state.max_depth = max_depth;
+ state.ignored_frames = 0;
+ state.returned_frames = 0;
+ init_memory(&state.memory, milist);
+
+ _Unwind_Reason_Code rc =_Unwind_Backtrace(unwind_backtrace_callback, &state);
+
+ release_my_map_info_list(milist);
+
+ if (state.returned_frames) {
+ return state.returned_frames;
+ }
+ return rc == _URC_END_OF_STACK ? 0 : -1;
+}
+
+#ifdef CORKSCREW_HAVE_ARCH
+static const int32_t STATE_DUMPING = -1;
+static const int32_t STATE_DONE = -2;
+static const int32_t STATE_CANCEL = -3;
+
+static pthread_mutex_t g_unwind_signal_mutex = PTHREAD_MUTEX_INITIALIZER;
+static volatile struct {
+ int32_t tid_state;
+ const map_info_t* map_info_list;
+ backtrace_frame_t* backtrace;
+ size_t ignore_depth;
+ size_t max_depth;
+ size_t returned_frames;
+} g_unwind_signal_state;
+
+static void unwind_backtrace_thread_signal_handler(int n, siginfo_t* siginfo, void* sigcontext) {
+ if (!android_atomic_acquire_cas(gettid(), STATE_DUMPING, &g_unwind_signal_state.tid_state)) {
+ g_unwind_signal_state.returned_frames = unwind_backtrace_signal_arch(
+ siginfo, sigcontext,
+ g_unwind_signal_state.map_info_list,
+ g_unwind_signal_state.backtrace,
+ g_unwind_signal_state.ignore_depth,
+ g_unwind_signal_state.max_depth);
+ android_atomic_release_store(STATE_DONE, &g_unwind_signal_state.tid_state);
+ } else {
+ ALOGV("Received spurious SIGURG on thread %d that was intended for thread %d.",
+ gettid(), android_atomic_acquire_load(&g_unwind_signal_state.tid_state));
+ }
+}
+#endif
+
+extern int tgkill(int tgid, int tid, int sig);
+
+ssize_t unwind_backtrace_thread(pid_t tid, backtrace_frame_t* backtrace,
+ size_t ignore_depth, size_t max_depth) {
+ if (tid == gettid()) {
+ return unwind_backtrace(backtrace, ignore_depth + 1, max_depth);
+ }
+
+ ALOGV("Unwinding thread %d from thread %d.", tid, gettid());
+
+#ifdef CORKSCREW_HAVE_ARCH
+ struct sigaction act;
+ struct sigaction oact;
+ memset(&act, 0, sizeof(act));
+ act.sa_sigaction = unwind_backtrace_thread_signal_handler;
+ act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
+ sigemptyset(&act.sa_mask);
+
+ pthread_mutex_lock(&g_unwind_signal_mutex);
+ map_info_t* milist = acquire_my_map_info_list();
+
+ ssize_t frames = -1;
+ if (!sigaction(SIGURG, &act, &oact)) {
+ g_unwind_signal_state.map_info_list = milist;
+ g_unwind_signal_state.backtrace = backtrace;
+ g_unwind_signal_state.ignore_depth = ignore_depth;
+ g_unwind_signal_state.max_depth = max_depth;
+ g_unwind_signal_state.returned_frames = 0;
+ android_atomic_release_store(tid, &g_unwind_signal_state.tid_state);
+
+ // Signal the specific thread that we want to dump.
+ int32_t tid_state = tid;
+ if (tgkill(getpid(), tid, SIGURG)) {
+ ALOGV("Failed to send SIGURG to thread %d.", tid);
+ } else {
+ // Wait for the other thread to start dumping the stack, or time out.
+ int wait_millis = 250;
+ for (;;) {
+ tid_state = android_atomic_acquire_load(&g_unwind_signal_state.tid_state);
+ if (tid_state != tid) {
+ break;
+ }
+ if (wait_millis--) {
+ ALOGV("Waiting for thread %d to start dumping the stack...", tid);
+ usleep(1000);
+ } else {
+ ALOGV("Timed out waiting for thread %d to start dumping the stack.", tid);
+ break;
+ }
+ }
+ }
+
+ // Try to cancel the dump if it has not started yet.
+ if (tid_state == tid) {
+ if (!android_atomic_acquire_cas(tid, STATE_CANCEL, &g_unwind_signal_state.tid_state)) {
+ ALOGV("Canceled thread %d stack dump.", tid);
+ tid_state = STATE_CANCEL;
+ } else {
+ tid_state = android_atomic_acquire_load(&g_unwind_signal_state.tid_state);
+ }
+ }
+
+ // Wait indefinitely for the dump to finish or be canceled.
+ // We cannot apply a timeout here because the other thread is accessing state that
+ // is owned by this thread, such as milist. It should not take very
+ // long to take the dump once started.
+ while (tid_state == STATE_DUMPING) {
+ ALOGV("Waiting for thread %d to finish dumping the stack...", tid);
+ usleep(1000);
+ tid_state = android_atomic_acquire_load(&g_unwind_signal_state.tid_state);
+ }
+
+ if (tid_state == STATE_DONE) {
+ frames = g_unwind_signal_state.returned_frames;
+ }
+
+ sigaction(SIGURG, &oact, NULL);
+ }
+
+ release_my_map_info_list(milist);
+ pthread_mutex_unlock(&g_unwind_signal_mutex);
+ return frames;
+#else
+ return -1;
+#endif
+}
+
+ssize_t unwind_backtrace_ptrace(pid_t tid, const ptrace_context_t* context,
+ backtrace_frame_t* backtrace, size_t ignore_depth, size_t max_depth) {
+#ifdef CORKSCREW_HAVE_ARCH
+ return unwind_backtrace_ptrace_arch(tid, context, backtrace, ignore_depth, max_depth);
+#else
+ return -1;
+#endif
+}
+
+static void init_backtrace_symbol(backtrace_symbol_t* symbol, uintptr_t pc) {
+ symbol->relative_pc = pc;
+ symbol->relative_symbol_addr = 0;
+ symbol->map_name = NULL;
+ symbol->symbol_name = NULL;
+ symbol->demangled_name = NULL;
+}
+
+void get_backtrace_symbols(const backtrace_frame_t* backtrace, size_t frames,
+ backtrace_symbol_t* backtrace_symbols) {
+ map_info_t* milist = acquire_my_map_info_list();
+ for (size_t i = 0; i < frames; i++) {
+ const backtrace_frame_t* frame = &backtrace[i];
+ backtrace_symbol_t* symbol = &backtrace_symbols[i];
+ init_backtrace_symbol(symbol, frame->absolute_pc);
+
+ const map_info_t* mi = find_map_info(milist, frame->absolute_pc);
+ if (mi) {
+ symbol->relative_pc = frame->absolute_pc - mi->start;
+ if (mi->name[0]) {
+ symbol->map_name = strdup(mi->name);
+ }
+#if HAVE_DLADDR
+ Dl_info info;
+ if (dladdr((const void*)frame->absolute_pc, &info) && info.dli_sname) {
+ symbol->relative_symbol_addr = (uintptr_t)info.dli_saddr
+ - (uintptr_t)info.dli_fbase;
+ symbol->symbol_name = strdup(info.dli_sname);
+ symbol->demangled_name = demangle_symbol_name(symbol->symbol_name);
+ }
+#endif
+ }
+ }
+ release_my_map_info_list(milist);
+}
+
+void get_backtrace_symbols_ptrace(const ptrace_context_t* context,
+ const backtrace_frame_t* backtrace, size_t frames,
+ backtrace_symbol_t* backtrace_symbols) {
+ for (size_t i = 0; i < frames; i++) {
+ const backtrace_frame_t* frame = &backtrace[i];
+ backtrace_symbol_t* symbol = &backtrace_symbols[i];
+ init_backtrace_symbol(symbol, frame->absolute_pc);
+
+ const map_info_t* mi;
+ const symbol_t* s;
+ find_symbol_ptrace(context, frame->absolute_pc, &mi, &s);
+ if (mi) {
+ symbol->relative_pc = frame->absolute_pc - mi->start;
+ if (mi->name[0]) {
+ symbol->map_name = strdup(mi->name);
+ }
+ }
+ if (s) {
+ symbol->relative_symbol_addr = s->start;
+ symbol->symbol_name = strdup(s->name);
+ symbol->demangled_name = demangle_symbol_name(symbol->symbol_name);
+ }
+ }
+}
+
+void free_backtrace_symbols(backtrace_symbol_t* backtrace_symbols, size_t frames) {
+ for (size_t i = 0; i < frames; i++) {
+ backtrace_symbol_t* symbol = &backtrace_symbols[i];
+ free(symbol->map_name);
+ free(symbol->symbol_name);
+ free(symbol->demangled_name);
+ init_backtrace_symbol(symbol, 0);
+ }
+}
+
+void format_backtrace_line(unsigned frameNumber, const backtrace_frame_t* frame,
+ const backtrace_symbol_t* symbol, char* buffer, size_t bufferSize) {
+ const char* mapName = symbol->map_name ? symbol->map_name : "<unknown>";
+ const char* symbolName = symbol->demangled_name ? symbol->demangled_name : symbol->symbol_name;
+ size_t fieldWidth = (bufferSize - 80) / 2;
+ if (symbolName) {
+ uint32_t pc_offset = symbol->relative_pc - symbol->relative_symbol_addr;
+ if (pc_offset) {
+ snprintf(buffer, bufferSize, "#%02d pc %08x %.*s (%.*s+%u)",
+ frameNumber, symbol->relative_pc, fieldWidth, mapName,
+ fieldWidth, symbolName, pc_offset);
+ } else {
+ snprintf(buffer, bufferSize, "#%02d pc %08x %.*s (%.*s)",
+ frameNumber, symbol->relative_pc, fieldWidth, mapName,
+ fieldWidth, symbolName);
+ }
+ } else {
+ snprintf(buffer, bufferSize, "#%02d pc %08x %.*s",
+ frameNumber, symbol->relative_pc, fieldWidth, mapName);
+ }
+}
diff --git a/libcorkscrew/demangle.c b/libcorkscrew/demangle.c
new file mode 100644
index 0000000..54247cb
--- /dev/null
+++ b/libcorkscrew/demangle.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include <corkscrew/demangle.h>
+
+#include <cutils/log.h>
+
+extern char *__cxa_demangle (const char *mangled, char *buf, size_t *len,
+ int *status);
+
+char* demangle_symbol_name(const char* name) {
+ // __cxa_demangle handles NULL by returning NULL
+ return __cxa_demangle(name, 0, 0, 0);
+}
diff --git a/libcorkscrew/map_info.c b/libcorkscrew/map_info.c
new file mode 100644
index 0000000..f33378f
--- /dev/null
+++ b/libcorkscrew/map_info.c
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include <corkscrew/map_info.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <cutils/log.h>
+#include <sys/time.h>
+
+// 6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /system/lib/libcomposer.so\n
+// 012345678901234567890123456789012345678901234567890123456789
+// 0 1 2 3 4 5
+static map_info_t* parse_maps_line(const char* line)
+{
+ unsigned long int start;
+ unsigned long int end;
+ char permissions[5];
+ int name_pos;
+ if (sscanf(line, "%lx-%lx %4s %*x %*x:%*x %*d%n", &start, &end,
+ permissions, &name_pos) != 3) {
+ return NULL;
+ }
+
+ while (isspace(line[name_pos])) {
+ name_pos += 1;
+ }
+ const char* name = line + name_pos;
+ size_t name_len = strlen(name);
+ if (name_len && name[name_len - 1] == '\n') {
+ name_len -= 1;
+ }
+
+ map_info_t* mi = calloc(1, sizeof(map_info_t) + name_len + 1);
+ if (mi) {
+ mi->start = start;
+ mi->end = end;
+ mi->is_readable = strlen(permissions) == 4 && permissions[0] == 'r';
+ mi->is_executable = strlen(permissions) == 4 && permissions[2] == 'x';
+ mi->data = NULL;
+ memcpy(mi->name, name, name_len);
+ mi->name[name_len] = '\0';
+ ALOGV("Parsed map: start=0x%08x, end=0x%08x, "
+ "is_readable=%d, is_executable=%d, name=%s",
+ mi->start, mi->end, mi->is_readable, mi->is_executable, mi->name);
+ }
+ return mi;
+}
+
+map_info_t* load_map_info_list(pid_t tid) {
+ char path[PATH_MAX];
+ char line[1024];
+ FILE* fp;
+ map_info_t* milist = NULL;
+
+ snprintf(path, PATH_MAX, "/proc/%d/maps", tid);
+ fp = fopen(path, "r");
+ if (fp) {
+ while(fgets(line, sizeof(line), fp)) {
+ map_info_t* mi = parse_maps_line(line);
+ if (mi) {
+ mi->next = milist;
+ milist = mi;
+ }
+ }
+ fclose(fp);
+ }
+ return milist;
+}
+
+void free_map_info_list(map_info_t* milist) {
+ while (milist) {
+ map_info_t* next = milist->next;
+ free(milist);
+ milist = next;
+ }
+}
+
+const map_info_t* find_map_info(const map_info_t* milist, uintptr_t addr) {
+ const map_info_t* mi = milist;
+ while (mi && !(addr >= mi->start && addr < mi->end)) {
+ mi = mi->next;
+ }
+ return mi;
+}
+
+bool is_readable_map(const map_info_t* milist, uintptr_t addr) {
+ const map_info_t* mi = find_map_info(milist, addr);
+ return mi && mi->is_readable;
+}
+
+bool is_executable_map(const map_info_t* milist, uintptr_t addr) {
+ const map_info_t* mi = find_map_info(milist, addr);
+ return mi && mi->is_executable;
+}
+
+static pthread_mutex_t g_my_map_info_list_mutex = PTHREAD_MUTEX_INITIALIZER;
+static map_info_t* g_my_map_info_list = NULL;
+
+static const int64_t MAX_CACHE_AGE = 5 * 1000 * 1000000LL;
+
+typedef struct {
+ uint32_t refs;
+ int64_t timestamp;
+} my_map_info_data_t;
+
+static int64_t now() {
+ struct timespec t;
+ t.tv_sec = t.tv_nsec = 0;
+ clock_gettime(CLOCK_MONOTONIC, &t);
+ return t.tv_sec * 1000000000LL + t.tv_nsec;
+}
+
+static void dec_ref(map_info_t* milist, my_map_info_data_t* data) {
+ if (!--data->refs) {
+ ALOGV("Freed my_map_info_list %p.", milist);
+ free(data);
+ free_map_info_list(milist);
+ }
+}
+
+map_info_t* acquire_my_map_info_list() {
+ pthread_mutex_lock(&g_my_map_info_list_mutex);
+
+ int64_t time = now();
+ if (g_my_map_info_list) {
+ my_map_info_data_t* data = (my_map_info_data_t*)g_my_map_info_list->data;
+ int64_t age = time - data->timestamp;
+ if (age >= MAX_CACHE_AGE) {
+ ALOGV("Invalidated my_map_info_list %p, age=%lld.", g_my_map_info_list, age);
+ dec_ref(g_my_map_info_list, data);
+ g_my_map_info_list = NULL;
+ } else {
+ ALOGV("Reusing my_map_info_list %p, age=%lld.", g_my_map_info_list, age);
+ }
+ }
+
+ if (!g_my_map_info_list) {
+ my_map_info_data_t* data = (my_map_info_data_t*)malloc(sizeof(my_map_info_data_t));
+ g_my_map_info_list = load_map_info_list(getpid());
+ if (g_my_map_info_list) {
+ ALOGV("Loaded my_map_info_list %p.", g_my_map_info_list);
+ g_my_map_info_list->data = data;
+ data->refs = 1;
+ data->timestamp = time;
+ } else {
+ free(data);
+ }
+ }
+
+ map_info_t* milist = g_my_map_info_list;
+ if (milist) {
+ my_map_info_data_t* data = (my_map_info_data_t*)g_my_map_info_list->data;
+ data->refs += 1;
+ }
+
+ pthread_mutex_unlock(&g_my_map_info_list_mutex);
+ return milist;
+}
+
+void release_my_map_info_list(map_info_t* milist) {
+ if (milist) {
+ pthread_mutex_lock(&g_my_map_info_list_mutex);
+
+ my_map_info_data_t* data = (my_map_info_data_t*)milist->data;
+ dec_ref(milist, data);
+
+ pthread_mutex_unlock(&g_my_map_info_list_mutex);
+ }
+}
diff --git a/libcorkscrew/ptrace-arch.h b/libcorkscrew/ptrace-arch.h
new file mode 100644
index 0000000..c02df52
--- /dev/null
+++ b/libcorkscrew/ptrace-arch.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Architecture dependent functions. */
+
+#ifndef _CORKSCREW_PTRACE_ARCH_H
+#define _CORKSCREW_PTRACE_ARCH_H
+
+#include <corkscrew/ptrace.h>
+#include <corkscrew/map_info.h>
+#include <corkscrew/symbol_table.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Custom extra data we stuff into map_info_t structures as part
+ * of our ptrace_context_t. */
+typedef struct {
+#ifdef __arm__
+ uintptr_t exidx_start;
+ size_t exidx_size;
+#endif
+ symbol_table_t* symbol_table;
+} map_info_data_t;
+
+void load_ptrace_map_info_data_arch(pid_t pid, map_info_t* mi, map_info_data_t* data);
+void free_ptrace_map_info_data_arch(map_info_t* mi, map_info_data_t* data);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CORKSCREW_PTRACE_ARCH_H
diff --git a/libcorkscrew/ptrace.c b/libcorkscrew/ptrace.c
new file mode 100644
index 0000000..cbea8ca
--- /dev/null
+++ b/libcorkscrew/ptrace.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include "ptrace-arch.h"
+#include <corkscrew/ptrace.h>
+
+#include <errno.h>
+#include <sys/ptrace.h>
+#include <cutils/log.h>
+
+static const uint32_t ELF_MAGIC = 0x464C457f; // "ELF\0177"
+
+#ifndef PAGE_SIZE
+#define PAGE_SIZE 4096
+#endif
+
+#ifndef PAGE_MASK
+#define PAGE_MASK (~(PAGE_SIZE - 1))
+#endif
+
+void init_memory(memory_t* memory, const map_info_t* map_info_list) {
+ memory->tid = -1;
+ memory->map_info_list = map_info_list;
+}
+
+void init_memory_ptrace(memory_t* memory, pid_t tid) {
+ memory->tid = tid;
+ memory->map_info_list = NULL;
+}
+
+bool try_get_word(const memory_t* memory, uintptr_t ptr, uint32_t* out_value) {
+ ALOGV("try_get_word: reading word at 0x%08x", ptr);
+ if (ptr & 3) {
+ ALOGV("try_get_word: invalid pointer 0x%08x", ptr);
+ *out_value = 0xffffffffL;
+ return false;
+ }
+ if (memory->tid < 0) {
+ if (!is_readable_map(memory->map_info_list, ptr)) {
+ ALOGV("try_get_word: pointer 0x%08x not in a readable map", ptr);
+ *out_value = 0xffffffffL;
+ return false;
+ }
+ *out_value = *(uint32_t*)ptr;
+ return true;
+ } else {
+ // ptrace() returns -1 and sets errno when the operation fails.
+ // To disambiguate -1 from a valid result, we clear errno beforehand.
+ errno = 0;
+ *out_value = ptrace(PTRACE_PEEKTEXT, memory->tid, (void*)ptr, NULL);
+ if (*out_value == 0xffffffffL && errno) {
+ ALOGV("try_get_word: invalid pointer 0x%08x reading from tid %d, "
+ "ptrace() errno=%d", ptr, memory->tid, errno);
+ return false;
+ }
+ return true;
+ }
+}
+
+bool try_get_word_ptrace(pid_t tid, uintptr_t ptr, uint32_t* out_value) {
+ memory_t memory;
+ init_memory_ptrace(&memory, tid);
+ return try_get_word(&memory, ptr, out_value);
+}
+
+static void load_ptrace_map_info_data(pid_t pid, map_info_t* mi) {
+ if (mi->is_executable && mi->is_readable) {
+ uint32_t elf_magic;
+ if (try_get_word_ptrace(pid, mi->start, &elf_magic) && elf_magic == ELF_MAGIC) {
+ map_info_data_t* data = (map_info_data_t*)calloc(1, sizeof(map_info_data_t));
+ if (data) {
+ mi->data = data;
+ if (mi->name[0]) {
+ data->symbol_table = load_symbol_table(mi->name);
+ }
+#ifdef CORKSCREW_HAVE_ARCH
+ load_ptrace_map_info_data_arch(pid, mi, data);
+#endif
+ }
+ }
+ }
+}
+
+ptrace_context_t* load_ptrace_context(pid_t pid) {
+ ptrace_context_t* context =
+ (ptrace_context_t*)calloc(1, sizeof(ptrace_context_t));
+ if (context) {
+ context->map_info_list = load_map_info_list(pid);
+ for (map_info_t* mi = context->map_info_list; mi; mi = mi->next) {
+ load_ptrace_map_info_data(pid, mi);
+ }
+ }
+ return context;
+}
+
+static void free_ptrace_map_info_data(map_info_t* mi) {
+ map_info_data_t* data = (map_info_data_t*)mi->data;
+ if (data) {
+ if (data->symbol_table) {
+ free_symbol_table(data->symbol_table);
+ }
+#ifdef CORKSCREW_HAVE_ARCH
+ free_ptrace_map_info_data_arch(mi, data);
+#endif
+ free(data);
+ mi->data = NULL;
+ }
+}
+
+void free_ptrace_context(ptrace_context_t* context) {
+ for (map_info_t* mi = context->map_info_list; mi; mi = mi->next) {
+ free_ptrace_map_info_data(mi);
+ }
+ free_map_info_list(context->map_info_list);
+}
+
+void find_symbol_ptrace(const ptrace_context_t* context,
+ uintptr_t addr, const map_info_t** out_map_info, const symbol_t** out_symbol) {
+ const map_info_t* mi = find_map_info(context->map_info_list, addr);
+ const symbol_t* symbol = NULL;
+ if (mi) {
+ const map_info_data_t* data = (const map_info_data_t*)mi->data;
+ if (data && data->symbol_table) {
+ symbol = find_symbol(data->symbol_table, addr - mi->start);
+ }
+ }
+ *out_map_info = mi;
+ *out_symbol = symbol;
+}
diff --git a/libcorkscrew/symbol_table.c b/libcorkscrew/symbol_table.c
new file mode 100644
index 0000000..1b97180
--- /dev/null
+++ b/libcorkscrew/symbol_table.c
@@ -0,0 +1,211 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Corkscrew"
+//#define LOG_NDEBUG 0
+
+#include <corkscrew/symbol_table.h>
+
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/exec_elf.h>
+#include <cutils/log.h>
+
+// Compare function for qsort
+static int qcompar(const void *a, const void *b) {
+ const symbol_t* asym = (const symbol_t*)a;
+ const symbol_t* bsym = (const symbol_t*)b;
+ if (asym->start > bsym->start) return 1;
+ if (asym->start < bsym->start) return -1;
+ return 0;
+}
+
+// Compare function for bsearch
+static int bcompar(const void *key, const void *element) {
+ uintptr_t addr = *(const uintptr_t*)key;
+ const symbol_t* symbol = (const symbol_t*)element;
+ if (addr < symbol->start) return -1;
+ if (addr >= symbol->end) return 1;
+ return 0;
+}
+
+symbol_table_t* load_symbol_table(const char *filename) {
+ symbol_table_t* table = NULL;
+ ALOGV("Loading symbol table from '%s'.", filename);
+
+ int fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ goto out;
+ }
+
+ struct stat sb;
+ if (fstat(fd, &sb)) {
+ goto out_close;
+ }
+
+ size_t length = sb.st_size;
+ char* base = mmap(NULL, length, PROT_READ, MAP_PRIVATE, fd, 0);
+ if (base == MAP_FAILED) {
+ goto out_close;
+ }
+
+ // Parse the file header
+ Elf32_Ehdr *hdr = (Elf32_Ehdr*)base;
+ if (!IS_ELF(*hdr)) {
+ goto out_close;
+ }
+ Elf32_Shdr *shdr = (Elf32_Shdr*)(base + hdr->e_shoff);
+
+ // Search for the dynamic symbols section
+ int sym_idx = -1;
+ int dynsym_idx = -1;
+ for (Elf32_Half i = 0; i < hdr->e_shnum; i++) {
+ if (shdr[i].sh_type == SHT_SYMTAB) {
+ sym_idx = i;
+ }
+ if (shdr[i].sh_type == SHT_DYNSYM) {
+ dynsym_idx = i;
+ }
+ }
+ if (dynsym_idx == -1 && sym_idx == -1) {
+ goto out_unmap;
+ }
+
+ table = malloc(sizeof(symbol_table_t));
+ if(!table) {
+ goto out_unmap;
+ }
+ table->num_symbols = 0;
+
+ Elf32_Sym *dynsyms = NULL;
+ int dynnumsyms = 0;
+ char *dynstr = NULL;
+ if (dynsym_idx != -1) {
+ dynsyms = (Elf32_Sym*)(base + shdr[dynsym_idx].sh_offset);
+ dynnumsyms = shdr[dynsym_idx].sh_size / shdr[dynsym_idx].sh_entsize;
+ int dynstr_idx = shdr[dynsym_idx].sh_link;
+ dynstr = base + shdr[dynstr_idx].sh_offset;
+ }
+
+ Elf32_Sym *syms = NULL;
+ int numsyms = 0;
+ char *str = NULL;
+ if (sym_idx != -1) {
+ syms = (Elf32_Sym*)(base + shdr[sym_idx].sh_offset);
+ numsyms = shdr[sym_idx].sh_size / shdr[sym_idx].sh_entsize;
+ int str_idx = shdr[sym_idx].sh_link;
+ str = base + shdr[str_idx].sh_offset;
+ }
+
+ int dynsymbol_count = 0;
+ if (dynsym_idx != -1) {
+ // Iterate through the dynamic symbol table, and count how many symbols
+ // are actually defined
+ for (int i = 0; i < dynnumsyms; i++) {
+ if (dynsyms[i].st_shndx != SHN_UNDEF) {
+ dynsymbol_count++;
+ }
+ }
+ }
+
+ size_t symbol_count = 0;
+ if (sym_idx != -1) {
+ // Iterate through the symbol table, and count how many symbols
+ // are actually defined
+ for (int i = 0; i < numsyms; i++) {
+ if (syms[i].st_shndx != SHN_UNDEF
+ && str[syms[i].st_name]
+ && syms[i].st_value
+ && syms[i].st_size) {
+ symbol_count++;
+ }
+ }
+ }
+
+ // Now, create an entry in our symbol table structure for each symbol...
+ table->num_symbols += symbol_count + dynsymbol_count;
+ table->symbols = malloc(table->num_symbols * sizeof(symbol_t));
+ if (!table->symbols) {
+ free(table);
+ table = NULL;
+ goto out_unmap;
+ }
+
+ size_t symbol_index = 0;
+ if (dynsym_idx != -1) {
+ // ...and populate them
+ for (int i = 0; i < dynnumsyms; i++) {
+ if (dynsyms[i].st_shndx != SHN_UNDEF) {
+ table->symbols[symbol_index].name = strdup(dynstr + dynsyms[i].st_name);
+ table->symbols[symbol_index].start = dynsyms[i].st_value;
+ table->symbols[symbol_index].end = dynsyms[i].st_value + dynsyms[i].st_size;
+ ALOGV(" [%d] '%s' 0x%08x-0x%08x (DYNAMIC)",
+ symbol_index, table->symbols[symbol_index].name,
+ table->symbols[symbol_index].start, table->symbols[symbol_index].end);
+ symbol_index += 1;
+ }
+ }
+ }
+
+ if (sym_idx != -1) {
+ // ...and populate them
+ for (int i = 0; i < numsyms; i++) {
+ if (syms[i].st_shndx != SHN_UNDEF
+ && str[syms[i].st_name]
+ && syms[i].st_value
+ && syms[i].st_size) {
+ table->symbols[symbol_index].name = strdup(str + syms[i].st_name);
+ table->symbols[symbol_index].start = syms[i].st_value;
+ table->symbols[symbol_index].end = syms[i].st_value + syms[i].st_size;
+ ALOGV(" [%d] '%s' 0x%08x-0x%08x",
+ symbol_index, table->symbols[symbol_index].name,
+ table->symbols[symbol_index].start, table->symbols[symbol_index].end);
+ symbol_index += 1;
+ }
+ }
+ }
+
+ // Sort the symbol table entries, so they can be bsearched later
+ qsort(table->symbols, table->num_symbols, sizeof(symbol_t), qcompar);
+
+out_unmap:
+ munmap(base, length);
+
+out_close:
+ close(fd);
+
+out:
+ return table;
+}
+
+void free_symbol_table(symbol_table_t* table) {
+ if (table) {
+ for (size_t i = 0; i < table->num_symbols; i++) {
+ free(table->symbols[i].name);
+ }
+ free(table->symbols);
+ free(table);
+ }
+}
+
+const symbol_t* find_symbol(const symbol_table_t* table, uintptr_t addr) {
+ if (!table) return NULL;
+ return (const symbol_t*)bsearch(&addr, table->symbols, table->num_symbols,
+ sizeof(symbol_t), bcompar);
+}
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index effaae0..dcf859b 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -96,6 +96,12 @@
# Shared and static library for target
# ========================================================
+
+# This is needed in LOCAL_C_INCLUDES to access the C library's private
+# header named <bionic_time.h>
+#
+libcutils_c_includes := bionic/libc/private
+
include $(CLEAR_VARS)
LOCAL_MODULE := libcutils
LOCAL_SRC_FILES := $(commonSources) ashmem-dev.c mq.c android_reboot.c partition_utils.c uevent.c qtaguid.c klog.c
@@ -115,7 +121,7 @@
endif # !sh
endif # !arm
-LOCAL_C_INCLUDES := $(KERNEL_HEADERS)
+LOCAL_C_INCLUDES := $(libcutils_c_includes) $(KERNEL_HEADERS)
LOCAL_STATIC_LIBRARIES := liblog
LOCAL_CFLAGS += $(targetSmpFlag)
include $(BUILD_STATIC_LIBRARY)
@@ -125,6 +131,7 @@
LOCAL_WHOLE_STATIC_LIBRARIES := libcutils
LOCAL_SHARED_LIBRARIES := liblog
LOCAL_CFLAGS += $(targetSmpFlag)
+LOCAL_C_INCLUDES := $(libcutils_c_includes)
include $(BUILD_SHARED_LIBRARY)
include $(CLEAR_VARS)
diff --git a/libdiskconfig/Android.mk b/libdiskconfig/Android.mk
index 9decbb9..b5d83fa 100644
--- a/libdiskconfig/Android.mk
+++ b/libdiskconfig/Android.mk
@@ -19,7 +19,6 @@
LOCAL_SRC_FILES := $(commonSources)
LOCAL_MODULE := libdiskconfig_host
LOCAL_MODULE_TAGS := optional
-LOCAL_SYSTEM_SHARED_LIBRARIES := libcutils
LOCAL_CFLAGS := -O2 -g -W -Wall -Werror -D_LARGEFILE64_SOURCE
include $(BUILD_HOST_STATIC_LIBRARY)
endif # HOST_OS == linux
diff --git a/libion/Android.mk b/libion/Android.mk
new file mode 100644
index 0000000..6abac3c
--- /dev/null
+++ b/libion/Android.mk
@@ -0,0 +1,15 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := ion.c
+LOCAL_MODULE := libion
+LOCAL_MODULE_TAGS := optional
+LOCAL_SHARED_LIBRARIES := liblog
+include $(BUILD_HEAPTRACKED_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := ion.c ion_test.c
+LOCAL_MODULE := iontest
+LOCAL_MODULE_TAGS := optional tests
+LOCAL_SHARED_LIBRARIES := liblog
+include $(BUILD_HEAPTRACKED_EXECUTABLE)
diff --git a/libion/ion.c b/libion/ion.c
new file mode 100644
index 0000000..dbeac23
--- /dev/null
+++ b/libion/ion.c
@@ -0,0 +1,134 @@
+/*
+ * ion.c
+ *
+ * Memory Allocator functions for ion
+ *
+ * Copyright 2011 Google, Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define LOG_TAG "ion"
+
+#include <cutils/log.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+
+#include <linux/ion.h>
+#include <ion/ion.h>
+
+int ion_open()
+{
+ int fd = open("/dev/ion", O_RDWR);
+ if (fd < 0)
+ ALOGE("open /dev/ion failed!\n");
+ return fd;
+}
+
+int ion_close(int fd)
+{
+ return close(fd);
+}
+
+static int ion_ioctl(int fd, int req, void *arg)
+{
+ int ret = ioctl(fd, req, arg);
+ if (ret < 0) {
+ ALOGE("ioctl %x failed with code %d: %s\n", req,
+ ret, strerror(errno));
+ return -errno;
+ }
+ return ret;
+}
+
+int ion_alloc(int fd, size_t len, size_t align, unsigned int flags,
+ struct ion_handle **handle)
+{
+ int ret;
+ struct ion_allocation_data data = {
+ .len = len,
+ .align = align,
+ .flags = flags,
+ };
+
+ ret = ion_ioctl(fd, ION_IOC_ALLOC, &data);
+ if (ret < 0)
+ return ret;
+ *handle = data.handle;
+ return ret;
+}
+
+int ion_free(int fd, struct ion_handle *handle)
+{
+ struct ion_handle_data data = {
+ .handle = handle,
+ };
+ return ion_ioctl(fd, ION_IOC_FREE, &data);
+}
+
+int ion_map(int fd, struct ion_handle *handle, size_t length, int prot,
+ int flags, off_t offset, unsigned char **ptr, int *map_fd)
+{
+ struct ion_fd_data data = {
+ .handle = handle,
+ };
+
+ int ret = ion_ioctl(fd, ION_IOC_MAP, &data);
+ if (ret < 0)
+ return ret;
+ *map_fd = data.fd;
+ if (*map_fd < 0) {
+ ALOGE("map ioctl returned negative fd\n");
+ return -EINVAL;
+ }
+ *ptr = mmap(NULL, length, prot, flags, *map_fd, offset);
+ if (*ptr == MAP_FAILED) {
+ ALOGE("mmap failed: %s\n", strerror(errno));
+ return -errno;
+ }
+ return ret;
+}
+
+int ion_share(int fd, struct ion_handle *handle, int *share_fd)
+{
+ int map_fd;
+ struct ion_fd_data data = {
+ .handle = handle,
+ };
+
+ int ret = ion_ioctl(fd, ION_IOC_SHARE, &data);
+ if (ret < 0)
+ return ret;
+ *share_fd = data.fd;
+ if (*share_fd < 0) {
+ ALOGE("share ioctl returned negative fd\n");
+ return -EINVAL;
+ }
+ return ret;
+}
+
+int ion_import(int fd, int share_fd, struct ion_handle **handle)
+{
+ struct ion_fd_data data = {
+ .fd = share_fd,
+ };
+
+ int ret = ion_ioctl(fd, ION_IOC_IMPORT, &data);
+ if (ret < 0)
+ return ret;
+ *handle = data.handle;
+ return ret;
+}
diff --git a/libion/ion_test.c b/libion/ion_test.c
new file mode 100644
index 0000000..3f2d7cc
--- /dev/null
+++ b/libion/ion_test.c
@@ -0,0 +1,282 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <ion/ion.h>
+#include <linux/ion.h>
+#include <linux/omap_ion.h>
+
+size_t len = 1024*1024, align = 0;
+int prot = PROT_READ | PROT_WRITE;
+int map_flags = MAP_SHARED;
+int alloc_flags = 0;
+int test = -1;
+size_t width = 1024*1024, height = 1024*1024;
+size_t stride;
+
+int _ion_alloc_test(int *fd, struct ion_handle **handle)
+{
+ int ret;
+
+ *fd = ion_open();
+ if (*fd < 0)
+ return *fd;
+
+ ret = ion_alloc(*fd, len, align, alloc_flags, handle);
+
+ if (ret)
+ printf("%s failed: %s\n", __func__, strerror(ret));
+ return ret;
+}
+
+void ion_alloc_test()
+{
+ int fd, ret;
+ struct ion_handle *handle;
+
+ if(_ion_alloc_test(&fd, &handle))
+ return;
+
+ ret = ion_free(fd, handle);
+ if (ret) {
+ printf("%s failed: %s %p\n", __func__, strerror(ret), handle);
+ return;
+ }
+ ion_close(fd);
+ printf("ion alloc test: passed\n");
+}
+
+void ion_map_test()
+{
+ int fd, map_fd, ret;
+ size_t i;
+ struct ion_handle *handle;
+ unsigned char *ptr;
+
+ if(_ion_alloc_test(&fd, &handle))
+ return;
+
+ ret = ion_map(fd, handle, len, prot, map_flags, 0, &ptr, &map_fd);
+ if (ret)
+ return;
+
+ for (i = 0; i < len; i++) {
+ ptr[i] = (unsigned char)i;
+ }
+ for (i = 0; i < len; i++)
+ if (ptr[i] != (unsigned char)i)
+ printf("%s failed wrote %d read %d from mapped "
+ "memory\n", __func__, i, ptr[i]);
+ /* clean up properly */
+ ret = ion_free(fd, handle);
+ ion_close(fd);
+ munmap(ptr, len);
+ close(map_fd);
+
+ _ion_alloc_test(&fd, &handle);
+ close(fd);
+
+#if 0
+ munmap(ptr, len);
+ close(map_fd);
+ ion_close(fd);
+
+ _ion_alloc_test(len, align, flags, &fd, &handle);
+ close(map_fd);
+ ret = ion_map(fd, handle, len, prot, flags, 0, &ptr, &map_fd);
+ /* don't clean up */
+#endif
+}
+
+void ion_share_test()
+
+{
+ struct ion_handle *handle;
+ int sd[2];
+ int num_fd = 1;
+ struct iovec count_vec = {
+ .iov_base = &num_fd,
+ .iov_len = sizeof num_fd,
+ };
+ char buf[CMSG_SPACE(sizeof(int))];
+ socketpair(AF_UNIX, SOCK_STREAM, 0, sd);
+ if (fork()) {
+ struct msghdr msg = {
+ .msg_control = buf,
+ .msg_controllen = sizeof buf,
+ .msg_iov = &count_vec,
+ .msg_iovlen = 1,
+ };
+
+ struct cmsghdr *cmsg;
+ int fd, share_fd, ret;
+ char *ptr;
+ /* parent */
+ if(_ion_alloc_test(&fd, &handle))
+ return;
+ ret = ion_share(fd, handle, &share_fd);
+ if (ret)
+ printf("share failed %s\n", strerror(errno));
+ ptr = mmap(NULL, len, prot, map_flags, share_fd, 0);
+ if (ptr == MAP_FAILED) {
+ return;
+ }
+ strcpy(ptr, "master");
+ cmsg = CMSG_FIRSTHDR(&msg);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+ *(int *)CMSG_DATA(cmsg) = share_fd;
+ /* send the fd */
+ printf("master? [%10s] should be [master]\n", ptr);
+ printf("master sending msg 1\n");
+ sendmsg(sd[0], &msg, 0);
+ if (recvmsg(sd[0], &msg, 0) < 0)
+ perror("master recv msg 2");
+ printf("master? [%10s] should be [child]\n", ptr);
+
+ /* send ping */
+ sendmsg(sd[0], &msg, 0);
+ printf("master->master? [%10s]\n", ptr);
+ if (recvmsg(sd[0], &msg, 0) < 0)
+ perror("master recv 1");
+ } else {
+ struct msghdr msg;
+ struct cmsghdr *cmsg;
+ char* ptr;
+ int fd, recv_fd;
+ char* child_buf[100];
+ /* child */
+ struct iovec count_vec = {
+ .iov_base = child_buf,
+ .iov_len = sizeof child_buf,
+ };
+
+ struct msghdr child_msg = {
+ .msg_control = buf,
+ .msg_controllen = sizeof buf,
+ .msg_iov = &count_vec,
+ .msg_iovlen = 1,
+ };
+
+ if (recvmsg(sd[1], &child_msg, 0) < 0)
+ perror("child recv msg 1");
+ cmsg = CMSG_FIRSTHDR(&child_msg);
+ if (cmsg == NULL) {
+ printf("no cmsg rcvd in child");
+ return;
+ }
+ recv_fd = *(int*)CMSG_DATA(cmsg);
+ if (recv_fd < 0) {
+ printf("could not get recv_fd from socket");
+ return;
+ }
+ printf("child %d\n", recv_fd);
+ fd = ion_open();
+ ptr = mmap(NULL, len, prot, map_flags, recv_fd, 0);
+ if (ptr == MAP_FAILED) {
+ return;
+ }
+ printf("child? [%10s] should be [master]\n", ptr);
+ strcpy(ptr, "child");
+ printf("child sending msg 2\n");
+ sendmsg(sd[1], &child_msg, 0);
+ }
+}
+
+int main(int argc, char* argv[]) {
+ int c;
+ enum tests {
+ ALLOC_TEST = 0, MAP_TEST, SHARE_TEST,
+ };
+
+ while (1) {
+ static struct option opts[] = {
+ {"alloc", no_argument, 0, 'a'},
+ {"alloc_flags", required_argument, 0, 'f'},
+ {"map", no_argument, 0, 'm'},
+ {"share", no_argument, 0, 's'},
+ {"len", required_argument, 0, 'l'},
+ {"align", required_argument, 0, 'g'},
+ {"map_flags", required_argument, 0, 'z'},
+ {"prot", required_argument, 0, 'p'},
+ {"width", required_argument, 0, 'w'},
+ {"height", required_argument, 0, 'h'},
+ };
+ int i = 0;
+ c = getopt_long(argc, argv, "af:h:l:mr:stw:", opts, &i);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'l':
+ len = atol(optarg);
+ break;
+ case 'g':
+ align = atol(optarg);
+ break;
+ case 'z':
+ map_flags = 0;
+ map_flags |= strstr(optarg, "PROT_EXEC") ?
+ PROT_EXEC : 0;
+ map_flags |= strstr(optarg, "PROT_READ") ?
+ PROT_READ: 0;
+ map_flags |= strstr(optarg, "PROT_WRITE") ?
+ PROT_WRITE: 0;
+ map_flags |= strstr(optarg, "PROT_NONE") ?
+ PROT_NONE: 0;
+ break;
+ case 'p':
+ prot = 0;
+ prot |= strstr(optarg, "MAP_PRIVATE") ?
+ MAP_PRIVATE : 0;
+ prot |= strstr(optarg, "MAP_SHARED") ?
+ MAP_PRIVATE : 0;
+ break;
+ case 'f':
+ alloc_flags = atol(optarg);
+ break;
+ case 'a':
+ test = ALLOC_TEST;
+ break;
+ case 'm':
+ test = MAP_TEST;
+ break;
+ case 's':
+ test = SHARE_TEST;
+ break;
+ case 'w':
+ width = atol(optarg);
+ break;
+ case 'h':
+ height = atol(optarg);
+ break;
+ }
+ }
+ printf("test %d, len %u, width %u, height %u align %u, "
+ "map_flags %d, prot %d, alloc_flags %d\n", test, len, width,
+ height, align, map_flags, prot, alloc_flags);
+ switch (test) {
+ case ALLOC_TEST:
+ ion_alloc_test();
+ break;
+ case MAP_TEST:
+ ion_map_test();
+ break;
+ case SHARE_TEST:
+ ion_share_test();
+ break;
+ default:
+ printf("must specify a test (alloc, map, share)\n");
+ }
+ return 0;
+}
diff --git a/libnetutils/dhcp_utils.c b/libnetutils/dhcp_utils.c
old mode 100755
new mode 100644
index 1e08eb6..d18931b
--- a/libnetutils/dhcp_utils.c
+++ b/libnetutils/dhcp_utils.c
@@ -145,6 +145,11 @@
/*
* Start the dhcp client daemon, and wait for it to finish
* configuring the interface.
+ *
+ * The device init.rc file needs a corresponding entry for this work.
+ *
+ * Example:
+ * service dhcpcd_<interface> /system/bin/dhcpcd -ABKL
*/
int dhcp_do_request(const char *interface,
char *ipaddr,
@@ -287,8 +292,11 @@
}
/**
- * Run WiMAX dhcp renew service.
- * "wimax_renew" service shoud be included in init.rc.
+ * The device init.rc file needs a corresponding entry.
+ *
+ * Example:
+ * service iprenew_<interface> /system/bin/dhcpcd -n
+ *
*/
int dhcp_do_request_renew(const char *interface,
in_addr_t *ipaddr,
diff --git a/libsysutils/Android.mk b/libsysutils/Android.mk
index cccf484..57cc313 100644
--- a/libsysutils/Android.mk
+++ b/libsysutils/Android.mk
@@ -12,6 +12,7 @@
src/FrameworkCommand.cpp \
src/SocketClient.cpp \
src/ServiceManager.cpp \
+ EventLogTags.logtags
LOCAL_MODULE:= libsysutils
diff --git a/libsysutils/EventLogTags.logtags b/libsysutils/EventLogTags.logtags
new file mode 100644
index 0000000..27785f0
--- /dev/null
+++ b/libsysutils/EventLogTags.logtags
@@ -0,0 +1,4 @@
+# See system/core/logcat/event.logtags for a description of the format of this file.
+
+# FrameworkListener dispatchCommand overflow
+78001 dispatchCommand_overflow
diff --git a/libsysutils/src/FrameworkListener.cpp b/libsysutils/src/FrameworkListener.cpp
index 3416ceb..90be754 100644
--- a/libsysutils/src/FrameworkListener.cpp
+++ b/libsysutils/src/FrameworkListener.cpp
@@ -159,6 +159,7 @@
return;
overflow:
+ LOG_EVENT_INT(78001, cli->getUid());
cli->sendMsg(500, "Command too long", false);
goto out;
}
diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index ae56c41..b71ce86 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -253,7 +253,7 @@
int max = 0;
int ret;
int queued_lines = 0;
- bool sleep = true;
+ bool sleep = false;
int result;
fd_set readset;
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 290e375..7299513 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -70,6 +70,9 @@
write /proc/sys/kernel/sched_compat_yield 1
write /proc/sys/kernel/sched_child_runs_first 0
write /proc/sys/kernel/randomize_va_space 2
+ write /proc/sys/kernel/kptr_restrict 2
+ write /proc/sys/kernel/dmesg_restrict 1
+ write /proc/sys/vm/mmap_min_addr 32768
# Create cgroup mount points for process groups
mkdir /dev/cpuctl
@@ -414,7 +417,7 @@
service zygote /system/bin/app_process -Xzygote /system/bin --zygote --start-system-server
class main
- socket zygote stream 666
+ socket zygote stream 660 root system
onrestart write /sys/android_power/request_state wake
onrestart write /sys/power/state on
onrestart restart media
diff --git a/run-as/Android.mk b/run-as/Android.mk
index 326f5af..043cc3a 100644
--- a/run-as/Android.mk
+++ b/run-as/Android.mk
@@ -5,8 +5,4 @@
LOCAL_MODULE:= run-as
-LOCAL_FORCE_STATIC_EXECUTABLE := true
-
-LOCAL_STATIC_LIBRARIES := libc
-
include $(BUILD_EXECUTABLE)
diff --git a/run-as/package.c b/run-as/package.c
index ca08436..143d647 100644
--- a/run-as/package.c
+++ b/run-as/package.c
@@ -18,6 +18,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
+#include <sys/mman.h>
#include <private/android_filesystem_config.h>
#include "package.h"
@@ -43,9 +44,6 @@
/* The file containing the list of installed packages on the system */
#define PACKAGES_LIST_FILE "/data/system/packages.list"
-/* This should be large enough to hold the content of the package database file */
-#define PACKAGES_LIST_BUFFER_SIZE 65536
-
/* Copy 'srclen' string bytes from 'src' into buffer 'dst' of size 'dstlen'
* This function always zero-terminate the destination buffer unless
* 'dstlen' is 0, even in case of overflow.
@@ -67,40 +65,73 @@
*dst = '\0'; /* zero-terminate result */
}
-/* Read up to 'buffsize' bytes into 'buff' from the file
- * named 'filename'. Return byte length on success, or -1
- * on error.
+/* Open 'filename' and map it into our address-space.
+ * Returns buffer address, or NULL on error
+ * On exit, *filesize will be set to the file's size, or 0 on error
*/
-static int
-read_file(const char* filename, char* buff, size_t buffsize)
+static void*
+map_file(const char* filename, size_t* filesize)
{
- int fd, len, old_errno;
+ int fd, ret, old_errno;
+ struct stat st;
+ size_t length = 0;
+ void* address = NULL;
- /* check the input buffer size */
- if (buffsize >= INT_MAX) {
- errno = EINVAL;
- return -1;
- }
+ *filesize = 0;
/* open the file for reading */
- do {
- fd = open(filename, O_RDONLY);
- } while (fd < 0 && errno == EINTR);
-
+ fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
if (fd < 0)
- return -1;
+ return NULL;
- /* read the content */
- do {
- len = read(fd, buff, buffsize);
- } while (len < 0 && errno == EINTR);
+ /* get its size */
+ ret = TEMP_FAILURE_RETRY(fstat(fd, &st));
+ if (ret < 0)
+ goto EXIT;
+ /* Ensure that the file is owned by the system user */
+ if ((st.st_uid != AID_SYSTEM) || (st.st_gid != AID_SYSTEM)) {
+ goto EXIT;
+ }
+
+ /* Ensure that the file has sane permissions */
+ if ((st.st_mode & S_IWOTH) != 0) {
+ goto EXIT;
+ }
+
+ /* Ensure that the size is not ridiculously large */
+ length = (size_t)st.st_size;
+ if ((off_t)length != st.st_size) {
+ errno = ENOMEM;
+ goto EXIT;
+ }
+
+ /* Memory-map the file now */
+ address = TEMP_FAILURE_RETRY(mmap(NULL, length, PROT_READ, MAP_PRIVATE, fd, 0));
+ if (address == MAP_FAILED) {
+ address = NULL;
+ goto EXIT;
+ }
+
+ /* We're good, return size */
+ *filesize = length;
+
+EXIT:
/* close the file, preserve old errno for better diagnostics */
old_errno = errno;
close(fd);
errno = old_errno;
- return len;
+ return address;
+}
+
+/* unmap the file, but preserve errno */
+static void
+unmap_file(void* address, size_t size)
+{
+ int old_errno = errno;
+ TEMP_FAILURE_RETRY(munmap(address, size));
+ errno = old_errno;
}
/* Check that a given directory:
@@ -371,18 +402,18 @@
int
get_package_info(const char* pkgName, PackageInfo *info)
{
- static char buffer[PACKAGES_LIST_BUFFER_SIZE];
- int buffer_len;
+ char* buffer;
+ size_t buffer_len;
const char* p;
const char* buffer_end;
- int result;
+ int result = -1;
info->uid = 0;
info->isDebuggable = 0;
info->dataDir[0] = '\0';
- buffer_len = read_file(PACKAGES_LIST_FILE, buffer, sizeof buffer);
- if (buffer_len < 0)
+ buffer = map_file(PACKAGES_LIST_FILE, &buffer_len);
+ if (buffer == NULL)
return -1;
p = buffer;
@@ -455,7 +486,8 @@
string_copy(info->dataDir, sizeof info->dataDir, p, q - p);
/* Ignore the rest */
- return 0;
+ result = 0;
+ goto EXIT;
NEXT_LINE:
p = next;
@@ -463,9 +495,14 @@
/* the package is unknown */
errno = ENOENT;
- return -1;
+ result = -1;
+ goto EXIT;
BAD_FORMAT:
errno = EINVAL;
- return -1;
+ result = -1;
+
+EXIT:
+ unmap_file(buffer, buffer_len);
+ return result;
}
diff --git a/run-as/run-as.c b/run-as/run-as.c
index d2a44e1..20e1530 100644
--- a/run-as/run-as.c
+++ b/run-as/run-as.c
@@ -41,9 +41,9 @@
*
* - This program should only run for the 'root' or 'shell' users
*
- * - Statically link against the C library, and avoid anything that
- * is more complex than simple system calls until the uid/gid has
- * been dropped to that of a normal user or you are sure to exit.
+ * - Avoid anything that is more complex than simple system calls
+ * until the uid/gid has been dropped to that of a normal user
+ * or you are sure to exit.
*
* This avoids depending on environment variables, system properties
* and other external factors that may affect the C library in
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index d7a675a..7e20448 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -55,7 +55,8 @@
nandread \
ionice \
touch \
- lsof
+ lsof \
+ md5
ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
TOOLS += r
@@ -68,6 +69,8 @@
LOCAL_SHARED_LIBRARIES := libcutils libc libusbhost
+LOCAL_C_INCLUDES := bionic/libc/bionic
+
LOCAL_MODULE:= toolbox
# Including this will define $(intermediates).
diff --git a/toolbox/getevent.c b/toolbox/getevent.c
index 352f6f9..5f5e16b 100644
--- a/toolbox/getevent.c
+++ b/toolbox/getevent.c
@@ -643,7 +643,7 @@
return 1;
}
if(get_time) {
- printf("%ld-%ld: ", event.time.tv_sec, event.time.tv_usec);
+ printf("[%8ld.%06ld] ", event.time.tv_sec, event.time.tv_usec);
}
if(print_device)
printf("%s: ", device_names[i]);
diff --git a/toolbox/hd.c b/toolbox/hd.c
index da31245..0d2f96a 100644
--- a/toolbox/hd.c
+++ b/toolbox/hd.c
@@ -68,6 +68,8 @@
if(count > 0 && base + count - filepos < read_len)
read_len = base + count - filepos;
res = read(fd, &buf, read_len);
+ if(res == 0)
+ break;
for(i = 0; i < res; i++) {
if((i & 15) == 0) {
printf("%08x: ", filepos + i);
@@ -80,7 +82,7 @@
lsum = 0;
}
}
- if(res <= 0) {
+ if(res < 0) {
printf("Read error on %s, offset %d len %d, %s\n", argv[optind], filepos, read_len, strerror(errno));
return 1;
}
diff --git a/toolbox/lsof.c b/toolbox/lsof.c
index 4e2f77a..376a642 100644
--- a/toolbox/lsof.c
+++ b/toolbox/lsof.c
@@ -178,8 +178,7 @@
if (!stat(info.path, &pidstat)) {
pw = getpwuid(pidstat.st_uid);
if (pw) {
- strncpy(info.user, pw->pw_name, USER_DISPLAY_MAX - 1);
- info.user[USER_DISPLAY_MAX - 1] = '\0';
+ strlcpy(info.user, pw->pw_name, sizeof(info.user));
} else {
snprintf(info.user, USER_DISPLAY_MAX, "%d", (int)pidstat.st_uid);
}
@@ -194,18 +193,20 @@
fprintf(stderr, "Couldn't read %s\n", info.path);
return;
}
+
char cmdline[PATH_MAX];
- if (read(fd, cmdline, sizeof(cmdline)) < 0) {
+ int numRead = read(fd, cmdline, sizeof(cmdline) - 1);
+ close(fd);
+
+ if (numRead < 0) {
fprintf(stderr, "Error reading cmdline: %s: %s\n", info.path, strerror(errno));
- close(fd);
return;
}
- close(fd);
- info.path[info.parent_length] = '\0';
+
+ cmdline[numRead] = '\0';
// We only want the basename of the cmdline
- strncpy(info.cmdline, basename(cmdline), sizeof(info.cmdline));
- info.cmdline[sizeof(info.cmdline)-1] = '\0';
+ strlcpy(info.cmdline, basename(cmdline), sizeof(info.cmdline));
// Read each of these symlinks
print_type("cwd", &info);
diff --git a/toolbox/md5.c b/toolbox/md5.c
new file mode 100644
index 0000000..2fb8b05
--- /dev/null
+++ b/toolbox/md5.c
@@ -0,0 +1,77 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <md5.h>
+
+/* When this was written, bionic's md5.h did not define this. */
+#ifndef MD5_DIGEST_LENGTH
+#define MD5_DIGEST_LENGTH 16
+#endif
+
+static int usage()
+{
+ fprintf(stderr,"md5 file ...\n");
+ return -1;
+}
+
+static int do_md5(const char *path)
+{
+ unsigned int i;
+ int fd;
+ MD5_CTX md5_ctx;
+ unsigned char md5[MD5_DIGEST_LENGTH];
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr,"could not open %s, %s\n", path, strerror(errno));
+ return -1;
+ }
+
+ /* Note that bionic's MD5_* functions return void. */
+ MD5_Init(&md5_ctx);
+
+ while (1) {
+ char buf[4096];
+ ssize_t rlen;
+ rlen = read(fd, buf, sizeof(buf));
+ if (rlen == 0)
+ break;
+ else if (rlen < 0) {
+ (void)close(fd);
+ fprintf(stderr,"could not read %s, %s\n", path, strerror(errno));
+ return -1;
+ }
+ MD5_Update(&md5_ctx, buf, rlen);
+ }
+ if (close(fd)) {
+ fprintf(stderr,"could not close %s, %s\n", path, strerror(errno));
+ return -1;
+ }
+
+ MD5_Final(md5, &md5_ctx);
+
+ for (i = 0; i < (int)sizeof(md5); i++)
+ printf("%02x", md5[i]);
+ printf(" %s\n", path);
+
+ return 0;
+}
+
+int md5_main(int argc, char *argv[])
+{
+ int i, ret = 0;
+
+ if (argc < 2)
+ return usage();
+
+ /* loop over the file args */
+ for (i = 1; i < argc; i++) {
+ if (do_md5(argv[i]))
+ ret = 1;
+ }
+
+ return ret;
+}