Merge "Don't set LD_LIBRARY_PATH globally."
diff --git a/adb/usb_vendors.c b/adb/usb_vendors.c
index f679a54..cd5885e 100755
--- a/adb/usb_vendors.c
+++ b/adb/usb_vendors.c
@@ -58,6 +58,8 @@
#define VENDOR_ID_ECS 0x03fc
// EMERGING_TECH's USB Vendor ID
#define VENDOR_ID_EMERGING_TECH 0x297F
+// Emerson's USB Vendor ID
+#define VENDOR_ID_EMERSON 0x2207
// Foxconn's USB Vendor ID
#define VENDOR_ID_FOXCONN 0x0489
// Fujitsu's USB Vendor ID
@@ -192,6 +194,7 @@
VENDOR_ID_DELL,
VENDOR_ID_ECS,
VENDOR_ID_EMERGING_TECH,
+ VENDOR_ID_EMERSON,
VENDOR_ID_FOXCONN,
VENDOR_ID_FUJITSU,
VENDOR_ID_FUNAI,
diff --git a/debuggerd/Android.mk b/debuggerd/Android.mk
index 2fe7c7a..422a86a 100644
--- a/debuggerd/Android.mk
+++ b/debuggerd/Android.mk
@@ -6,14 +6,20 @@
include $(CLEAR_VARS)
LOCAL_SRC_FILES:= \
- backtrace.c \
- debuggerd.c \
- getevent.c \
- tombstone.c \
- utility.c \
- $(TARGET_ARCH)/machine.c
+ backtrace.cpp \
+ debuggerd.cpp \
+ getevent.cpp \
+ tombstone.cpp \
+ utility.cpp \
+ $(TARGET_ARCH)/machine.cpp \
-LOCAL_CFLAGS := -Wall -Wno-unused-parameter -std=gnu99
+LOCAL_CONLYFLAGS := -std=gnu99
+LOCAL_CPPFLAGS := -std=gnu++11
+LOCAL_CFLAGS := \
+ -Wall \
+ -Wno-array-bounds \
+ -Werror \
+
LOCAL_MODULE := debuggerd
ifeq ($(ARCH_ARM_HAVE_VFP),true)
@@ -30,6 +36,8 @@
liblog \
libselinux \
+include external/stlport/libstlport.mk
+
include $(BUILD_EXECUTABLE)
include $(CLEAR_VARS)
@@ -38,7 +46,7 @@
LOCAL_MODULE := crasher
LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
LOCAL_MODULE_TAGS := optional
-LOCAL_CFLAGS += -fstack-protector-all
+LOCAL_CFLAGS += -fstack-protector-all -Wno-unused-parameter -Wno-free-nonheap-object
#LOCAL_FORCE_STATIC_EXECUTABLE := true
LOCAL_SHARED_LIBRARIES := libcutils liblog libc
include $(BUILD_EXECUTABLE)
diff --git a/debuggerd/arm/machine.c b/debuggerd/arm/machine.c
deleted file mode 100644
index 4ab6026..0000000
--- a/debuggerd/arm/machine.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/* system/debuggerd/debuggerd.c
-**
-** 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 <errno.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ptrace.h>
-#include <sys/types.h>
-#include <sys/user.h>
-
-#include "../utility.h"
-#include "../machine.h"
-
-/* enable to dump memory pointed to by every register */
-#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
-
-#ifdef WITH_VFP
-#ifdef WITH_VFP_D32
-#define NUM_VFP_REGS 32
-#else
-#define NUM_VFP_REGS 16
-#endif
-#endif
-
-static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scope_flags) {
- 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;
- }
- /* Dump more memory content for the crashing thread. */
- end = p + 256;
- /* 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);
-
- /* Enable the following code blob to dump ASCII values */
-#if 0
- 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++ = '.';
- }
- }
-#endif
- p += 4;
- }
- *asc_out = '\0';
- _LOG(log, scope_flags, " %s %s\n", code_buffer, ascii_buffer);
- }
-}
-
-/*
- * If configured to do so, dump memory around *all* registers
- * for the crashing thread.
- */
-void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
- struct pt_regs regs;
- if(ptrace(PTRACE_GETREGS, tid, 0, ®s)) {
- return;
- }
-
- if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
- static const char REG_NAMES[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";
-
- 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 = regs.uregs[reg];
-
- /*
- * Don't bother if it looks like a small int or ~= null, or if
- * it's in the kernel area.
- */
- if (addr < 4096 || addr >= 0xc0000000) {
- continue;
- }
-
- _LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", ®_NAMES[reg * 2]);
- dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
- }
- }
-
- /* explicitly allow upload of code dump logging */
- _LOG(log, scope_flags, "\ncode around pc:\n");
- dump_memory(log, tid, (uintptr_t)regs.ARM_pc, scope_flags);
-
- if (regs.ARM_pc != regs.ARM_lr) {
- _LOG(log, scope_flags, "\ncode around lr:\n");
- dump_memory(log, tid, (uintptr_t)regs.ARM_lr, scope_flags);
- }
-}
-
-void dump_registers(log_t* log, pid_t tid, int scope_flags)
-{
- struct pt_regs r;
- if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
- _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
- return;
- }
-
- _LOG(log, scope_flags, " 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(log, scope_flags, " 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(log, scope_flags, " 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(log, scope_flags, " 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, tid, 0, &vfp_regs)) {
- _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
- return;
- }
-
- for (i = 0; i < NUM_VFP_REGS; i += 2) {
- _LOG(log, scope_flags, " d%-2d %016llx d%-2d %016llx\n",
- i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
- }
- _LOG(log, scope_flags, " scr %08lx\n", vfp_regs.fpscr);
-#endif
-}
diff --git a/debuggerd/arm/machine.cpp b/debuggerd/arm/machine.cpp
new file mode 100644
index 0000000..3fba6db
--- /dev/null
+++ b/debuggerd/arm/machine.cpp
@@ -0,0 +1,172 @@
+/*
+ *
+ * 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 <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ptrace.h>
+#include <sys/types.h>
+#include <sys/user.h>
+
+#include "../utility.h"
+#include "../machine.h"
+
+// enable to dump memory pointed to by every register
+#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
+
+#ifdef WITH_VFP
+#ifdef WITH_VFP_D32
+#define NUM_VFP_REGS 32
+#else
+#define NUM_VFP_REGS 16
+#endif
+#endif
+
+static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scope_flags) {
+ 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;
+ }
+ // Dump more memory content for the crashing thread.
+ end = p + 256;
+ // 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, reinterpret_cast<void*>(p), NULL);
+ sprintf(code_buffer + strlen(code_buffer), "%08lx ", data);
+
+ // Enable the following code blob to dump ASCII values
+#if 0
+ 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++ = '.';
+ }
+ }
+#endif
+ p += 4;
+ }
+ *asc_out = '\0';
+ _LOG(log, scope_flags, " %s %s\n", code_buffer, ascii_buffer);
+ }
+}
+
+// If configured to do so, dump memory around *all* registers
+// for the crashing thread.
+void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
+ struct pt_regs regs;
+ if (ptrace(PTRACE_GETREGS, tid, 0, ®s)) {
+ return;
+ }
+
+ if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
+ static const char REG_NAMES[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";
+
+ 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 = regs.uregs[reg];
+
+ // Don't bother if it looks like a small int or ~= null, or if
+ // it's in the kernel area.
+ if (addr < 4096 || addr >= 0xc0000000) {
+ continue;
+ }
+
+ _LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", ®_NAMES[reg * 2]);
+ dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
+ }
+ }
+
+ // explicitly allow upload of code dump logging
+ _LOG(log, scope_flags, "\ncode around pc:\n");
+ dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_pc), scope_flags);
+
+ if (regs.ARM_pc != regs.ARM_lr) {
+ _LOG(log, scope_flags, "\ncode around lr:\n");
+ dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_lr), scope_flags);
+ }
+}
+
+void dump_registers(log_t* log, pid_t tid, int scope_flags) {
+ struct pt_regs r;
+ if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+ _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
+ return;
+ }
+
+ _LOG(log, scope_flags, " r0 %08x r1 %08x r2 %08x r3 %08x\n",
+ static_cast<uint32_t>(r.ARM_r0), static_cast<uint32_t>(r.ARM_r1),
+ static_cast<uint32_t>(r.ARM_r2), static_cast<uint32_t>(r.ARM_r3));
+ _LOG(log, scope_flags, " r4 %08x r5 %08x r6 %08x r7 %08x\n",
+ static_cast<uint32_t>(r.ARM_r4), static_cast<uint32_t>(r.ARM_r5),
+ static_cast<uint32_t>(r.ARM_r6), static_cast<uint32_t>(r.ARM_r7));
+ _LOG(log, scope_flags, " r8 %08x r9 %08x sl %08x fp %08x\n",
+ static_cast<uint32_t>(r.ARM_r8), static_cast<uint32_t>(r.ARM_r9),
+ static_cast<uint32_t>(r.ARM_r10), static_cast<uint32_t>(r.ARM_fp));
+ _LOG(log, scope_flags, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n",
+ static_cast<uint32_t>(r.ARM_ip), static_cast<uint32_t>(r.ARM_sp),
+ static_cast<uint32_t>(r.ARM_lr), static_cast<uint32_t>(r.ARM_pc),
+ static_cast<uint32_t>(r.ARM_cpsr));
+
+#ifdef WITH_VFP
+ struct user_vfp vfp_regs;
+ int i;
+
+ if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
+ _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
+ return;
+ }
+
+ for (i = 0; i < NUM_VFP_REGS; i += 2) {
+ _LOG(log, scope_flags, " d%-2d %016llx d%-2d %016llx\n",
+ i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
+ }
+ _LOG(log, scope_flags, " scr %08lx\n", vfp_regs.fpscr);
+#endif
+}
diff --git a/debuggerd/backtrace.c b/debuggerd/backtrace.c
deleted file mode 100644
index aa7a3c2..0000000
--- a/debuggerd/backtrace.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * Copyright (C) 2012 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 <stddef.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <time.h>
-#include <errno.h>
-#include <limits.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/ptrace.h>
-
-#include <backtrace/backtrace.h>
-
-#include "backtrace.h"
-#include "utility.h"
-
-static void dump_process_header(log_t* log, pid_t pid) {
- char path[PATH_MAX];
- char procnamebuf[1024];
- char* procname = NULL;
- FILE* fp;
-
- snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
- if ((fp = fopen(path, "r"))) {
- procname = fgets(procnamebuf, sizeof(procnamebuf), fp);
- fclose(fp);
- }
-
- time_t t = time(NULL);
- struct tm tm;
- localtime_r(&t, &tm);
- char timestr[64];
- strftime(timestr, sizeof(timestr), "%F %T", &tm);
- _LOG(log, SCOPE_AT_FAULT, "\n\n----- pid %d at %s -----\n", pid, timestr);
-
- if (procname) {
- _LOG(log, SCOPE_AT_FAULT, "Cmd line: %s\n", procname);
- }
-}
-
-static void dump_process_footer(log_t* log, pid_t pid) {
- _LOG(log, SCOPE_AT_FAULT, "\n----- end %d -----\n", pid);
-}
-
-static void dump_thread(log_t* log, pid_t tid, bool attached,
- bool* detach_failed, int* total_sleep_time_usec) {
- char path[PATH_MAX];
- char threadnamebuf[1024];
- char* threadname = NULL;
- FILE* fp;
-
- snprintf(path, sizeof(path), "/proc/%d/comm", tid);
- if ((fp = fopen(path, "r"))) {
- threadname = fgets(threadnamebuf, sizeof(threadnamebuf), fp);
- fclose(fp);
- if (threadname) {
- size_t len = strlen(threadname);
- if (len && threadname[len - 1] == '\n') {
- threadname[len - 1] = '\0';
- }
- }
- }
-
- _LOG(log, SCOPE_AT_FAULT, "\n\"%s\" sysTid=%d\n",
- threadname ? threadname : "<unknown>", tid);
-
- if (!attached && ptrace(PTRACE_ATTACH, tid, 0, 0) < 0) {
- _LOG(log, SCOPE_AT_FAULT, "Could not attach to thread: %s\n", strerror(errno));
- return;
- }
-
- wait_for_stop(tid, total_sleep_time_usec);
-
- backtrace_context_t context;
- if (!backtrace_create_context(&context, tid, -1, 0)) {
- _LOG(log, SCOPE_AT_FAULT, "Could not create backtrace context.\n");
- } else {
- dump_backtrace_to_log(&context, log, SCOPE_AT_FAULT, " ");
- backtrace_destroy_context(&context);
- }
-
- if (!attached && ptrace(PTRACE_DETACH, tid, 0, 0) != 0) {
- LOG("ptrace detach from %d failed: %s\n", tid, strerror(errno));
- *detach_failed = true;
- }
-}
-
-void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,
- int* total_sleep_time_usec) {
- log_t log;
- log.tfd = fd;
- log.amfd = amfd;
- log.quiet = true;
-
- dump_process_header(&log, pid);
- dump_thread(&log, tid, true, detach_failed, total_sleep_time_usec);
-
- char task_path[64];
- snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
- DIR* d = opendir(task_path);
- if (d != NULL) {
- struct dirent* de = NULL;
- while ((de = readdir(d)) != NULL) {
- if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
- continue;
- }
-
- char* end;
- pid_t new_tid = strtoul(de->d_name, &end, 10);
- if (*end || new_tid == tid) {
- continue;
- }
-
- dump_thread(&log, new_tid, false, detach_failed, total_sleep_time_usec);
- }
- closedir(d);
- }
-
- dump_process_footer(&log, pid);
-}
-
-void dump_backtrace_to_log(const backtrace_context_t* context, log_t* log,
- int scope_flags, const char* prefix) {
- char buf[512];
- for (size_t i = 0; i < context->backtrace->num_frames; i++) {
- backtrace_format_frame_data(context, i, buf, sizeof(buf));
- _LOG(log, scope_flags, "%s%s\n", prefix, buf);
- }
-}
diff --git a/debuggerd/backtrace.cpp b/debuggerd/backtrace.cpp
new file mode 100644
index 0000000..d388348
--- /dev/null
+++ b/debuggerd/backtrace.cpp
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2012 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 <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <time.h>
+#include <errno.h>
+#include <limits.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+
+#include <backtrace/Backtrace.h>
+#include <UniquePtr.h>
+
+#include "backtrace.h"
+#include "utility.h"
+
+static void dump_process_header(log_t* log, pid_t pid) {
+ char path[PATH_MAX];
+ char procnamebuf[1024];
+ char* procname = NULL;
+ FILE* fp;
+
+ snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
+ if ((fp = fopen(path, "r"))) {
+ procname = fgets(procnamebuf, sizeof(procnamebuf), fp);
+ fclose(fp);
+ }
+
+ time_t t = time(NULL);
+ struct tm tm;
+ localtime_r(&t, &tm);
+ char timestr[64];
+ strftime(timestr, sizeof(timestr), "%F %T", &tm);
+ _LOG(log, SCOPE_AT_FAULT, "\n\n----- pid %d at %s -----\n", pid, timestr);
+
+ if (procname) {
+ _LOG(log, SCOPE_AT_FAULT, "Cmd line: %s\n", procname);
+ }
+}
+
+static void dump_process_footer(log_t* log, pid_t pid) {
+ _LOG(log, SCOPE_AT_FAULT, "\n----- end %d -----\n", pid);
+}
+
+static void dump_thread(
+ log_t* log, pid_t tid, bool attached, bool* detach_failed, int* total_sleep_time_usec) {
+ char path[PATH_MAX];
+ char threadnamebuf[1024];
+ char* threadname = NULL;
+ FILE* fp;
+
+ snprintf(path, sizeof(path), "/proc/%d/comm", tid);
+ if ((fp = fopen(path, "r"))) {
+ threadname = fgets(threadnamebuf, sizeof(threadnamebuf), fp);
+ fclose(fp);
+ if (threadname) {
+ size_t len = strlen(threadname);
+ if (len && threadname[len - 1] == '\n') {
+ threadname[len - 1] = '\0';
+ }
+ }
+ }
+
+ _LOG(log, SCOPE_AT_FAULT, "\n\"%s\" sysTid=%d\n", threadname ? threadname : "<unknown>", tid);
+
+ if (!attached && ptrace(PTRACE_ATTACH, tid, 0, 0) < 0) {
+ _LOG(log, SCOPE_AT_FAULT, "Could not attach to thread: %s\n", strerror(errno));
+ return;
+ }
+
+ wait_for_stop(tid, total_sleep_time_usec);
+
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(tid, BACKTRACE_CURRENT_THREAD));
+ if (backtrace->Unwind(0)) {
+ dump_backtrace_to_log(backtrace.get(), log, SCOPE_AT_FAULT, " ");
+ }
+
+ if (!attached && ptrace(PTRACE_DETACH, tid, 0, 0) != 0) {
+ LOG("ptrace detach from %d failed: %s\n", tid, strerror(errno));
+ *detach_failed = true;
+ }
+}
+
+void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,
+ int* total_sleep_time_usec) {
+ log_t log;
+ log.tfd = fd;
+ log.amfd = amfd;
+ log.quiet = true;
+
+ dump_process_header(&log, pid);
+ dump_thread(&log, tid, true, detach_failed, total_sleep_time_usec);
+
+ char task_path[64];
+ snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
+ DIR* d = opendir(task_path);
+ if (d != NULL) {
+ struct dirent* de = NULL;
+ while ((de = readdir(d)) != NULL) {
+ if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
+ continue;
+ }
+
+ char* end;
+ pid_t new_tid = strtoul(de->d_name, &end, 10);
+ if (*end || new_tid == tid) {
+ continue;
+ }
+
+ dump_thread(&log, new_tid, false, detach_failed, total_sleep_time_usec);
+ }
+ closedir(d);
+ }
+
+ dump_process_footer(&log, pid);
+}
+
+void dump_backtrace_to_log(Backtrace* backtrace, log_t* log,
+ int scope_flags, const char* prefix) {
+ for (size_t i = 0; i < backtrace->NumFrames(); i++) {
+ _LOG(log, scope_flags, "%s%s\n", prefix, backtrace->FormatFrameData(i).c_str());
+ }
+}
diff --git a/debuggerd/backtrace.h b/debuggerd/backtrace.h
index 54a60b2..2ec8afb 100644
--- a/debuggerd/backtrace.h
+++ b/debuggerd/backtrace.h
@@ -17,21 +17,19 @@
#ifndef _DEBUGGERD_BACKTRACE_H
#define _DEBUGGERD_BACKTRACE_H
-#include <stddef.h>
-#include <stdbool.h>
#include <sys/types.h>
-#include <backtrace/backtrace.h>
-
#include "utility.h"
-/* Dumps a backtrace using a format similar to what Dalvik uses so that the result
- * can be intermixed in a bug report. */
+class Backtrace;
+
+// Dumps a backtrace using a format similar to what Dalvik uses so that the result
+// can be intermixed in a bug report.
void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,
- int* total_sleep_time_usec);
+ int* total_sleep_time_usec);
/* Dumps the backtrace in the backtrace data structure to the log. */
-void dump_backtrace_to_log(const backtrace_context_t* context, log_t* log,
- int scope_flags, const char* prefix);
+void dump_backtrace_to_log(Backtrace* backtrace, log_t* log,
+ int scope_flags, const char* prefix);
#endif // _DEBUGGERD_BACKTRACE_H
diff --git a/debuggerd/debuggerd.c b/debuggerd/debuggerd.c
deleted file mode 100644
index 4fd0312..0000000
--- a/debuggerd/debuggerd.c
+++ /dev/null
@@ -1,539 +0,0 @@
-/* system/debuggerd/debuggerd.c
-**
-** 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 <stdio.h>
-#include <errno.h>
-#include <signal.h>
-#include <pthread.h>
-#include <stdarg.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <time.h>
-
-#include <sys/ptrace.h>
-#include <sys/wait.h>
-#include <elf.h>
-#include <sys/stat.h>
-#include <sys/poll.h>
-
-#include <log/logd.h>
-#include <log/logger.h>
-
-#include <cutils/sockets.h>
-#include <cutils/properties.h>
-#include <cutils/debugger.h>
-
-#include <corkscrew/backtrace.h>
-
-#include <linux/input.h>
-
-#include <private/android_filesystem_config.h>
-
-#include "backtrace.h"
-#include "getevent.h"
-#include "tombstone.h"
-#include "utility.h"
-
-typedef struct {
- debugger_action_t action;
- pid_t pid, tid;
- uid_t uid, gid;
- uintptr_t abort_msg_address;
-} debugger_request_t;
-
-static int
-write_string(const char* file, const char* string)
-{
- int len;
- int fd;
- ssize_t amt;
- fd = open(file, O_RDWR);
- len = strlen(string);
- if (fd < 0)
- return -errno;
- amt = write(fd, string, len);
- close(fd);
- return amt >= 0 ? 0 : -errno;
-}
-
-static
-void init_debug_led(void)
-{
- // trout leds
- write_string("/sys/class/leds/red/brightness", "0");
- write_string("/sys/class/leds/green/brightness", "0");
- write_string("/sys/class/leds/blue/brightness", "0");
- write_string("/sys/class/leds/red/device/blink", "0");
- // sardine leds
- write_string("/sys/class/leds/left/cadence", "0,0");
-}
-
-static
-void enable_debug_led(void)
-{
- // trout leds
- write_string("/sys/class/leds/red/brightness", "255");
- // sardine leds
- write_string("/sys/class/leds/left/cadence", "1,0");
-}
-
-static
-void disable_debug_led(void)
-{
- // trout leds
- write_string("/sys/class/leds/red/brightness", "0");
- // sardine leds
- write_string("/sys/class/leds/left/cadence", "0,0");
-}
-
-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"
- "* and start gdbclient:\n"
- "*\n"
- "* gdbclient app_process :5039 %d\n"
- "*\n"
- "* Wait for gdb to start, then press HOME or VOLUME DOWN key\n"
- "* to let the process continue crashing.\n"
- "********************************************************\n",
- pid, pid);
-
- /* wait for HOME or VOLUME DOWN key */
- if (init_getevent() == 0) {
- int ms = 1200 / 10;
- int dit = 1;
- int dah = 3*dit;
- int _ = -dit;
- int ___ = 3*_;
- int _______ = 7*_;
- const signed char codes[] = {
- dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______
- };
- size_t s = 0;
- struct input_event e;
- 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.code == KEY_VOLUMEDOWN)
- && e.value == 0) {
- done = true;
- }
- } else if (res == 1) {
- if (++s >= sizeof(codes)/sizeof(*codes))
- s = 0;
- if (codes[s] > 0) {
- enable_debug_led();
- } else {
- disable_debug_led();
- }
- }
- } while (!done);
- uninit_getevent();
- }
-
- /* don't forget to turn debug led off */
- disable_debug_led();
- LOG("debuggerd resuming process %d", 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);
-
- 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 read_request(int fd, debugger_request_t* out_request) {
- struct ucred cr;
- int len = sizeof(cr);
- int status = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
- if (status != 0) {
- LOG("cannot get credentials\n");
- return -1;
- }
-
- XLOG("reading tid\n");
- fcntl(fd, F_SETFL, O_NONBLOCK);
-
- 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 (from pid=%d uid=%d)\n", cr.pid, cr.uid);
- return -1;
- }
-
- debugger_msg_t msg;
- memset(&msg, 0, sizeof(msg));
- status = TEMP_FAILURE_RETRY(read(fd, &msg, sizeof(msg)));
- if (status < 0) {
- LOG("read failure? %s (pid=%d uid=%d)\n",
- strerror(errno), cr.pid, cr.uid);
- return -1;
- }
- if (status == sizeof(debugger_msg_t)) {
- XLOG("crash request of size %d abort_msg_address=%#08x\n", status, msg.abort_msg_address);
- } else {
- LOG("invalid crash request of size %d (from pid=%d uid=%d)\n",
- status, cr.pid, cr.uid);
- return -1;
- }
-
- out_request->action = msg.action;
- out_request->tid = msg.tid;
- out_request->pid = cr.pid;
- out_request->uid = cr.uid;
- out_request->gid = cr.gid;
- out_request->abort_msg_address = msg.abort_msg_address;
-
- if (msg.action == DEBUGGER_ACTION_CRASH) {
- /* Ensure that the tid reported by the crashing process is valid. */
- 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",
- out_request->tid, out_request->pid);
- return -1;
- }
- } else if (cr.uid == 0
- || (cr.uid == AID_SYSTEM && msg.action == DEBUGGER_ACTION_DUMP_BACKTRACE)) {
- /* Only root or system can ask us to attach to any process and dump it explicitly.
- * However, system is only allowed to collect backtraces but cannot dump tombstones. */
- 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;
- }
- } else {
- /* No one else is allowed to dump arbitrary processes. */
- return -1;
- }
- return 0;
-}
-
-static bool should_attach_gdb(debugger_request_t* request) {
- if (request->action == DEBUGGER_ACTION_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;
-}
-
-static void handle_request(int fd) {
- XLOG("handle_request(%d)\n", fd);
-
- debugger_request_t request;
- memset(&request, 0, sizeof(request));
- int status = read_request(fd, &request);
- if (!status) {
- XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n",
- request.pid, request.uid, request.gid, request.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);
- if (TEMP_FAILURE_RETRY(write(fd, "\0", 1)) != 1) {
- LOG("failed responding to client: %s\n", strerror(errno));
- } else {
- char* tombstone_path = NULL;
-
- if (request.action == DEBUGGER_ACTION_CRASH) {
- 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.action == DEBUGGER_ACTION_DUMP_TOMBSTONE) {
- XLOG("stopped -- dumping to tombstone\n");
- tombstone_path = engrave_tombstone(request.pid, request.tid,
- signal, request.abort_msg_address, true, true, &detach_failed,
- &total_sleep_time_usec);
- } else if (request.action == DEBUGGER_ACTION_DUMP_BACKTRACE) {
- XLOG("stopped -- dumping to fd\n");
- dump_backtrace(fd, -1,
- request.pid, request.tid, &detach_failed,
- &total_sleep_time_usec);
- } 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 SIGPIPE:
-#ifdef SIGSTKFLT
- case SIGSTKFLT:
-#endif
- {
- XLOG("stopped -- fatal signal\n");
- /*
- * Send a SIGSTOP to the process to make all of
- * the non-signaled threads stop moving. Without
- * this we get a lot of "ptrace detach failed:
- * No such process".
- */
- kill(request.pid, SIGSTOP);
- /* 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, request.abort_msg_address, !attach_gdb, false,
- &detach_failed, &total_sleep_time_usec);
- break;
- }
-
- default:
- XLOG("stopped -- unexpected signal\n");
- LOG("process stopped due to unexpected signal %d\n", signal);
- break;
- }
- break;
- }
-
- if (request.action == DEBUGGER_ACTION_DUMP_TOMBSTONE) {
- 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;
-
- /*
- * debuggerd crashes can't be reported to debuggerd. Reset all of the
- * crash handlers.
- */
- signal(SIGILL, SIG_DFL);
- signal(SIGABRT, SIG_DFL);
- signal(SIGBUS, SIG_DFL);
- signal(SIGFPE, SIG_DFL);
- signal(SIGSEGV, SIG_DFL);
-#ifdef SIGSTKFLT
- signal(SIGSTKFLT, SIG_DFL);
-#endif
-
- // Ignore failed writes to closed sockets
- signal(SIGPIPE, SIG_IGN);
-
- logsocket = socket_local_client("logd",
- ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM);
- if(logsocket < 0) {
- logsocket = -1;
- } else {
- fcntl(logsocket, F_SETFD, FD_CLOEXEC);
- }
-
- act.sa_handler = SIG_DFL;
- sigemptyset(&act.sa_mask);
- sigaddset(&act.sa_mask,SIGCHLD);
- act.sa_flags = SA_NOCLDWAIT;
- sigaction(SIGCHLD, &act, 0);
-
- s = socket_local_server(DEBUGGER_SOCKET_NAME,
- ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
- if(s < 0) return 1;
- fcntl(s, F_SETFD, FD_CLOEXEC);
-
- LOG("debuggerd: " __DATE__ " " __TIME__ "\n");
-
- for(;;) {
- struct sockaddr addr;
- socklen_t alen;
- int fd;
-
- alen = sizeof(addr);
- XLOG("waiting for connection\n");
- fd = accept(s, &addr, &alen);
- if(fd < 0) {
- XLOG("accept failed: %s\n", strerror(errno));
- continue;
- }
-
- fcntl(fd, F_SETFD, FD_CLOEXEC);
-
- handle_request(fd);
- }
- return 0;
-}
-
-static int do_explicit_dump(pid_t tid, bool dump_backtrace) {
- fprintf(stdout, "Sending request to dump task %d.\n", tid);
-
- if (dump_backtrace) {
- fflush(stdout);
- if (dump_backtrace_to_file(tid, fileno(stdout)) < 0) {
- fputs("Error dumping backtrace.\n", stderr);
- return 1;
- }
- } else {
- char tombstone_path[PATH_MAX];
- if (dump_tombstone(tid, tombstone_path, sizeof(tombstone_path)) < 0) {
- fputs("Error dumping tombstone.\n", stderr);
- return 1;
- }
- fprintf(stderr, "Tombstone written to: %s\n", tombstone_path);
- }
- return 0;
-}
-
-static void usage() {
- fputs("Usage: -b [<tid>]\n"
- " -b dump backtrace to console, otherwise dump full tombstone file\n"
- "\n"
- "If tid specified, sends a request to debuggerd to dump that task.\n"
- "Otherwise, starts the debuggerd server.\n", stderr);
-}
-
-int main(int argc, char** argv) {
- if (argc == 1) {
- return do_server();
- }
-
- bool dump_backtrace = false;
- bool have_tid = false;
- pid_t tid = 0;
- for (int i = 1; i < argc; i++) {
- if (!strcmp(argv[i], "-b")) {
- dump_backtrace = true;
- } else if (!have_tid) {
- tid = atoi(argv[i]);
- have_tid = true;
- } else {
- usage();
- return 1;
- }
- }
- if (!have_tid) {
- usage();
- return 1;
- }
- return do_explicit_dump(tid, dump_backtrace);
-}
diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
new file mode 100644
index 0000000..de8ba9d
--- /dev/null
+++ b/debuggerd/debuggerd.cpp
@@ -0,0 +1,514 @@
+/*
+ * 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 <stdio.h>
+#include <errno.h>
+#include <signal.h>
+#include <pthread.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <time.h>
+
+#include <sys/ptrace.h>
+#include <sys/wait.h>
+#include <elf.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+
+#include <log/logd.h>
+#include <log/logger.h>
+
+#include <cutils/sockets.h>
+#include <cutils/properties.h>
+#include <cutils/debugger.h>
+
+#include <linux/input.h>
+
+#include <private/android_filesystem_config.h>
+
+#include "backtrace.h"
+#include "getevent.h"
+#include "tombstone.h"
+#include "utility.h"
+
+typedef struct {
+ debugger_action_t action;
+ pid_t pid, tid;
+ uid_t uid, gid;
+ uintptr_t abort_msg_address;
+} debugger_request_t;
+
+static int write_string(const char* file, const char* string) {
+ int len;
+ int fd;
+ ssize_t amt;
+ fd = open(file, O_RDWR);
+ len = strlen(string);
+ if (fd < 0)
+ return -errno;
+ amt = write(fd, string, len);
+ close(fd);
+ return amt >= 0 ? 0 : -errno;
+}
+
+static void init_debug_led() {
+ // trout leds
+ write_string("/sys/class/leds/red/brightness", "0");
+ write_string("/sys/class/leds/green/brightness", "0");
+ write_string("/sys/class/leds/blue/brightness", "0");
+ write_string("/sys/class/leds/red/device/blink", "0");
+ // sardine leds
+ write_string("/sys/class/leds/left/cadence", "0,0");
+}
+
+static void enable_debug_led() {
+ // trout leds
+ write_string("/sys/class/leds/red/brightness", "255");
+ // sardine leds
+ write_string("/sys/class/leds/left/cadence", "1,0");
+}
+
+static void disable_debug_led() {
+ // trout leds
+ write_string("/sys/class/leds/red/brightness", "0");
+ // sardine leds
+ write_string("/sys/class/leds/left/cadence", "0,0");
+}
+
+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"
+ "* and start gdbclient:\n"
+ "*\n"
+ "* gdbclient app_process :5039 %d\n"
+ "*\n"
+ "* Wait for gdb to start, then press HOME or VOLUME DOWN key\n"
+ "* to let the process continue crashing.\n"
+ "********************************************************\n",
+ pid, pid);
+
+ // wait for HOME or VOLUME DOWN key
+ if (init_getevent() == 0) {
+ int ms = 1200 / 10;
+ int dit = 1;
+ int dah = 3*dit;
+ int _ = -dit;
+ int ___ = 3*_;
+ int _______ = 7*_;
+ const int codes[] = {
+ dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______
+ };
+ size_t s = 0;
+ struct input_event e;
+ bool done = false;
+ init_debug_led();
+ enable_debug_led();
+ do {
+ int timeout = abs(codes[s]) * ms;
+ int res = get_event(&e, timeout);
+ if (res == 0) {
+ 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;
+ if (codes[s] > 0) {
+ enable_debug_led();
+ } else {
+ disable_debug_led();
+ }
+ }
+ } while (!done);
+ uninit_getevent();
+ }
+
+ // don't forget to turn debug led off
+ disable_debug_led();
+ LOG("debuggerd resuming process %d", 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);
+
+ 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 read_request(int fd, debugger_request_t* out_request) {
+ struct ucred cr;
+ int len = sizeof(cr);
+ int status = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
+ if (status != 0) {
+ LOG("cannot get credentials\n");
+ return -1;
+ }
+
+ XLOG("reading tid\n");
+ fcntl(fd, F_SETFL, O_NONBLOCK);
+
+ 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 (from pid=%d uid=%d)\n", cr.pid, cr.uid);
+ return -1;
+ }
+
+ debugger_msg_t msg;
+ memset(&msg, 0, sizeof(msg));
+ status = TEMP_FAILURE_RETRY(read(fd, &msg, sizeof(msg)));
+ if (status < 0) {
+ LOG("read failure? %s (pid=%d uid=%d)\n", strerror(errno), cr.pid, cr.uid);
+ return -1;
+ }
+ if (status == sizeof(debugger_msg_t)) {
+ XLOG("crash request of size %d abort_msg_address=%#08x\n", status, msg.abort_msg_address);
+ } else {
+ LOG("invalid crash request of size %d (from pid=%d uid=%d)\n", status, cr.pid, cr.uid);
+ return -1;
+ }
+
+ out_request->action = msg.action;
+ out_request->tid = msg.tid;
+ out_request->pid = cr.pid;
+ out_request->uid = cr.uid;
+ out_request->gid = cr.gid;
+ out_request->abort_msg_address = msg.abort_msg_address;
+
+ if (msg.action == DEBUGGER_ACTION_CRASH) {
+ // Ensure that the tid reported by the crashing process is valid.
+ 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",
+ out_request->tid, out_request->pid);
+ return -1;
+ }
+ } else if (cr.uid == 0
+ || (cr.uid == AID_SYSTEM && msg.action == DEBUGGER_ACTION_DUMP_BACKTRACE)) {
+ // Only root or system can ask us to attach to any process and dump it explicitly.
+ // However, system is only allowed to collect backtraces but cannot dump tombstones.
+ 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;
+ }
+ } else {
+ // No one else is allowed to dump arbitrary processes.
+ return -1;
+ }
+ return 0;
+}
+
+static bool should_attach_gdb(debugger_request_t* request) {
+ if (request->action == DEBUGGER_ACTION_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;
+}
+
+static void handle_request(int fd) {
+ XLOG("handle_request(%d)\n", fd);
+
+ debugger_request_t request;
+ memset(&request, 0, sizeof(request));
+ int status = read_request(fd, &request);
+ if (!status) {
+ XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n",
+ request.pid, request.uid, request.gid, request.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);
+ if (TEMP_FAILURE_RETRY(write(fd, "\0", 1)) != 1) {
+ LOG("failed responding to client: %s\n", strerror(errno));
+ } else {
+ char* tombstone_path = NULL;
+
+ if (request.action == DEBUGGER_ACTION_CRASH) {
+ 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.action == DEBUGGER_ACTION_DUMP_TOMBSTONE) {
+ XLOG("stopped -- dumping to tombstone\n");
+ tombstone_path = engrave_tombstone(
+ request.pid, request.tid, signal, request.abort_msg_address, true, true,
+ &detach_failed, &total_sleep_time_usec);
+ } else if (request.action == DEBUGGER_ACTION_DUMP_BACKTRACE) {
+ XLOG("stopped -- dumping to fd\n");
+ dump_backtrace(fd, -1, request.pid, request.tid, &detach_failed,
+ &total_sleep_time_usec);
+ } 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 SIGPIPE:
+#ifdef SIGSTKFLT
+ case SIGSTKFLT:
+#endif
+ XLOG("stopped -- fatal signal\n");
+ // Send a SIGSTOP to the process to make all of
+ // the non-signaled threads stop moving. Without
+ // this we get a lot of "ptrace detach failed:
+ // No such process".
+ kill(request.pid, SIGSTOP);
+ // 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, request.abort_msg_address, !attach_gdb,
+ false, &detach_failed, &total_sleep_time_usec);
+ break;
+
+ default:
+ XLOG("stopped -- unexpected signal\n");
+ LOG("process stopped due to unexpected signal %d\n", signal);
+ break;
+ }
+ break;
+ }
+
+ if (request.action == DEBUGGER_ACTION_DUMP_TOMBSTONE) {
+ 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;
+
+ // debuggerd crashes can't be reported to debuggerd. Reset all of the
+ // crash handlers.
+ signal(SIGILL, SIG_DFL);
+ signal(SIGABRT, SIG_DFL);
+ signal(SIGBUS, SIG_DFL);
+ signal(SIGFPE, SIG_DFL);
+ signal(SIGSEGV, SIG_DFL);
+#ifdef SIGSTKFLT
+ signal(SIGSTKFLT, SIG_DFL);
+#endif
+
+ // Ignore failed writes to closed sockets
+ signal(SIGPIPE, SIG_IGN);
+
+ logsocket = socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM);
+ if (logsocket < 0) {
+ logsocket = -1;
+ } else {
+ fcntl(logsocket, F_SETFD, FD_CLOEXEC);
+ }
+
+ act.sa_handler = SIG_DFL;
+ sigemptyset(&act.sa_mask);
+ sigaddset(&act.sa_mask,SIGCHLD);
+ act.sa_flags = SA_NOCLDWAIT;
+ sigaction(SIGCHLD, &act, 0);
+
+ s = socket_local_server(DEBUGGER_SOCKET_NAME, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
+ if (s < 0)
+ return 1;
+ fcntl(s, F_SETFD, FD_CLOEXEC);
+
+ LOG("debuggerd: " __DATE__ " " __TIME__ "\n");
+
+ for (;;) {
+ struct sockaddr addr;
+ socklen_t alen;
+ int fd;
+
+ alen = sizeof(addr);
+ XLOG("waiting for connection\n");
+ fd = accept(s, &addr, &alen);
+ if (fd < 0) {
+ XLOG("accept failed: %s\n", strerror(errno));
+ continue;
+ }
+
+ fcntl(fd, F_SETFD, FD_CLOEXEC);
+
+ handle_request(fd);
+ }
+ return 0;
+}
+
+static int do_explicit_dump(pid_t tid, bool dump_backtrace) {
+ fprintf(stdout, "Sending request to dump task %d.\n", tid);
+
+ if (dump_backtrace) {
+ fflush(stdout);
+ if (dump_backtrace_to_file(tid, fileno(stdout)) < 0) {
+ fputs("Error dumping backtrace.\n", stderr);
+ return 1;
+ }
+ } else {
+ char tombstone_path[PATH_MAX];
+ if (dump_tombstone(tid, tombstone_path, sizeof(tombstone_path)) < 0) {
+ fputs("Error dumping tombstone.\n", stderr);
+ return 1;
+ }
+ fprintf(stderr, "Tombstone written to: %s\n", tombstone_path);
+ }
+ return 0;
+}
+
+static void usage() {
+ fputs("Usage: -b [<tid>]\n"
+ " -b dump backtrace to console, otherwise dump full tombstone file\n"
+ "\n"
+ "If tid specified, sends a request to debuggerd to dump that task.\n"
+ "Otherwise, starts the debuggerd server.\n", stderr);
+}
+
+int main(int argc, char** argv) {
+ if (argc == 1) {
+ return do_server();
+ }
+
+ bool dump_backtrace = false;
+ bool have_tid = false;
+ pid_t tid = 0;
+ for (int i = 1; i < argc; i++) {
+ if (!strcmp(argv[i], "-b")) {
+ dump_backtrace = true;
+ } else if (!have_tid) {
+ tid = atoi(argv[i]);
+ have_tid = true;
+ } else {
+ usage();
+ return 1;
+ }
+ }
+ if (!have_tid) {
+ usage();
+ return 1;
+ }
+ return do_explicit_dump(tid, dump_backtrace);
+}
diff --git a/debuggerd/getevent.c b/debuggerd/getevent.c
deleted file mode 100644
index ebd070c..0000000
--- a/debuggerd/getevent.c
+++ /dev/null
@@ -1,219 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/inotify.h>
-#include <sys/limits.h>
-#include <sys/poll.h>
-#include <linux/input.h>
-#include <errno.h>
-#include <cutils/log.h>
-
-static struct pollfd *ufds;
-static char **device_names;
-static int nfds;
-
-static int open_device(const char *device)
-{
- int version;
- int fd;
- struct pollfd *new_ufds;
- char **new_device_names;
- char name[80];
- char location[80];
- char idstr[80];
- struct input_id id;
-
- fd = open(device, O_RDWR);
- if(fd < 0) {
- return -1;
- }
-
- if(ioctl(fd, EVIOCGVERSION, &version)) {
- return -1;
- }
- if(ioctl(fd, EVIOCGID, &id)) {
- return -1;
- }
- name[sizeof(name) - 1] = '\0';
- location[sizeof(location) - 1] = '\0';
- idstr[sizeof(idstr) - 1] = '\0';
- if(ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) < 1) {
- //fprintf(stderr, "could not get device name for %s, %s\n", device, strerror(errno));
- name[0] = '\0';
- }
- if(ioctl(fd, EVIOCGPHYS(sizeof(location) - 1), &location) < 1) {
- //fprintf(stderr, "could not get location for %s, %s\n", device, strerror(errno));
- location[0] = '\0';
- }
- if(ioctl(fd, EVIOCGUNIQ(sizeof(idstr) - 1), &idstr) < 1) {
- //fprintf(stderr, "could not get idstring for %s, %s\n", device, strerror(errno));
- idstr[0] = '\0';
- }
-
- new_ufds = realloc(ufds, sizeof(ufds[0]) * (nfds + 1));
- if(new_ufds == NULL) {
- fprintf(stderr, "out of memory\n");
- return -1;
- }
- ufds = new_ufds;
- new_device_names = realloc(device_names, sizeof(device_names[0]) * (nfds + 1));
- if(new_device_names == NULL) {
- fprintf(stderr, "out of memory\n");
- return -1;
- }
- device_names = new_device_names;
- ufds[nfds].fd = fd;
- ufds[nfds].events = POLLIN;
- device_names[nfds] = strdup(device);
- nfds++;
-
- return 0;
-}
-
-int close_device(const char *device)
-{
- int i;
- for(i = 1; i < nfds; i++) {
- if(strcmp(device_names[i], device) == 0) {
- int count = nfds - i - 1;
- free(device_names[i]);
- memmove(device_names + i, device_names + i + 1, sizeof(device_names[0]) * count);
- memmove(ufds + i, ufds + i + 1, sizeof(ufds[0]) * count);
- nfds--;
- return 0;
- }
- }
- return -1;
-}
-
-static int read_notify(const char *dirname, int nfd)
-{
- int res;
- char devname[PATH_MAX];
- char *filename;
- char event_buf[512];
- int event_size;
- int event_pos = 0;
- struct inotify_event *event;
-
- res = read(nfd, event_buf, sizeof(event_buf));
- if(res < (int)sizeof(*event)) {
- if(errno == EINTR)
- return 0;
- fprintf(stderr, "could not get event, %s\n", strerror(errno));
- return 1;
- }
- //printf("got %d bytes of event information\n", res);
-
- strcpy(devname, dirname);
- filename = devname + strlen(devname);
- *filename++ = '/';
-
- while(res >= (int)sizeof(*event)) {
- event = (struct inotify_event *)(event_buf + event_pos);
- //printf("%d: %08x \"%s\"\n", event->wd, event->mask, event->len ? event->name : "");
- if(event->len) {
- strcpy(filename, event->name);
- if(event->mask & IN_CREATE) {
- open_device(devname);
- }
- else {
- close_device(devname);
- }
- }
- event_size = sizeof(*event) + event->len;
- res -= event_size;
- event_pos += event_size;
- }
- return 0;
-}
-
-static int scan_dir(const char *dirname)
-{
- char devname[PATH_MAX];
- char *filename;
- DIR *dir;
- struct dirent *de;
- dir = opendir(dirname);
- if(dir == NULL)
- return -1;
- strcpy(devname, dirname);
- filename = devname + strlen(devname);
- *filename++ = '/';
- while((de = readdir(dir))) {
- if(de->d_name[0] == '.' &&
- (de->d_name[1] == '\0' ||
- (de->d_name[1] == '.' && de->d_name[2] == '\0')))
- continue;
- strcpy(filename, de->d_name);
- open_device(devname);
- }
- closedir(dir);
- return 0;
-}
-
-int init_getevent()
-{
- int res;
- const char *device_path = "/dev/input";
-
- nfds = 1;
- ufds = calloc(1, sizeof(ufds[0]));
- ufds[0].fd = inotify_init();
- ufds[0].events = POLLIN;
-
- res = inotify_add_watch(ufds[0].fd, device_path, IN_DELETE | IN_CREATE);
- if(res < 0) {
- return 1;
- }
- res = scan_dir(device_path);
- if(res < 0) {
- return 1;
- }
- return 0;
-}
-
-void uninit_getevent()
-{
- int i;
- for(i = 0; i < nfds; i++) {
- close(ufds[i].fd);
- }
- free(ufds);
- ufds = 0;
- nfds = 0;
-}
-
-int get_event(struct input_event* event, int timeout)
-{
- int res;
- int i;
- int pollres;
- const char *device_path = "/dev/input";
- while(1) {
- pollres = poll(ufds, nfds, timeout);
- if (pollres == 0) {
- return 1;
- }
- if(ufds[0].revents & POLLIN) {
- read_notify(device_path, ufds[0].fd);
- }
- for(i = 1; i < nfds; i++) {
- if(ufds[i].revents) {
- if(ufds[i].revents & POLLIN) {
- res = read(ufds[i].fd, event, sizeof(*event));
- if(res < (int)sizeof(event)) {
- fprintf(stderr, "could not get event\n");
- return -1;
- }
- return 0;
- }
- }
- }
- }
- return 0;
-}
diff --git a/debuggerd/getevent.cpp b/debuggerd/getevent.cpp
new file mode 100644
index 0000000..751c4fb
--- /dev/null
+++ b/debuggerd/getevent.cpp
@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) 2014 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/inotify.h>
+#include <sys/limits.h>
+#include <sys/poll.h>
+#include <linux/input.h>
+#include <errno.h>
+#include <cutils/log.h>
+
+static struct pollfd* ufds;
+static char** device_names;
+static int nfds;
+
+static int open_device(const char* device) {
+ int version;
+ int fd;
+ struct pollfd* new_ufds;
+ char** new_device_names;
+ char name[80];
+ char location[80];
+ char idstr[80];
+ struct input_id id;
+
+ fd = open(device, O_RDWR);
+ if (fd < 0) {
+ return -1;
+ }
+
+ if (ioctl(fd, EVIOCGVERSION, &version)) {
+ return -1;
+ }
+ if (ioctl(fd, EVIOCGID, &id)) {
+ return -1;
+ }
+ name[sizeof(name) - 1] = '\0';
+ location[sizeof(location) - 1] = '\0';
+ idstr[sizeof(idstr) - 1] = '\0';
+ if (ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) < 1) {
+ name[0] = '\0';
+ }
+ if (ioctl(fd, EVIOCGPHYS(sizeof(location) - 1), &location) < 1) {
+ location[0] = '\0';
+ }
+ if (ioctl(fd, EVIOCGUNIQ(sizeof(idstr) - 1), &idstr) < 1) {
+ idstr[0] = '\0';
+ }
+
+ new_ufds = reinterpret_cast<pollfd*>(realloc(ufds, sizeof(ufds[0]) * (nfds + 1)));
+ if (new_ufds == NULL) {
+ fprintf(stderr, "out of memory\n");
+ return -1;
+ }
+ ufds = new_ufds;
+ new_device_names = reinterpret_cast<char**>(realloc(
+ device_names, sizeof(device_names[0]) * (nfds + 1)));
+ if (new_device_names == NULL) {
+ fprintf(stderr, "out of memory\n");
+ return -1;
+ }
+ device_names = new_device_names;
+ ufds[nfds].fd = fd;
+ ufds[nfds].events = POLLIN;
+ device_names[nfds] = strdup(device);
+ nfds++;
+
+ return 0;
+}
+
+int close_device(const char* device) {
+ int i;
+ for (i = 1; i < nfds; i++) {
+ if (strcmp(device_names[i], device) == 0) {
+ int count = nfds - i - 1;
+ free(device_names[i]);
+ memmove(device_names + i, device_names + i + 1, sizeof(device_names[0]) * count);
+ memmove(ufds + i, ufds + i + 1, sizeof(ufds[0]) * count);
+ nfds--;
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static int read_notify(const char* dirname, int nfd) {
+ int res;
+ char devname[PATH_MAX];
+ char* filename;
+ char event_buf[512];
+ int event_size;
+ int event_pos = 0;
+ struct inotify_event *event;
+
+ res = read(nfd, event_buf, sizeof(event_buf));
+ if (res < (int)sizeof(*event)) {
+ if (errno == EINTR)
+ return 0;
+ fprintf(stderr, "could not get event, %s\n", strerror(errno));
+ return 1;
+ }
+
+ strcpy(devname, dirname);
+ filename = devname + strlen(devname);
+ *filename++ = '/';
+
+ while (res >= (int)sizeof(*event)) {
+ event = reinterpret_cast<struct inotify_event*>(event_buf + event_pos);
+ if (event->len) {
+ strcpy(filename, event->name);
+ if (event->mask & IN_CREATE) {
+ open_device(devname);
+ } else {
+ close_device(devname);
+ }
+ }
+ event_size = sizeof(*event) + event->len;
+ res -= event_size;
+ event_pos += event_size;
+ }
+ return 0;
+}
+
+static int scan_dir(const char* dirname) {
+ char devname[PATH_MAX];
+ char* filename;
+ DIR* dir;
+ struct dirent* de;
+ dir = opendir(dirname);
+ if (dir == NULL)
+ return -1;
+ strcpy(devname, dirname);
+ filename = devname + strlen(devname);
+ *filename++ = '/';
+ while ((de = readdir(dir))) {
+ if ((de->d_name[0] == '.' && de->d_name[1] == '\0') ||
+ (de->d_name[1] == '.' && de->d_name[2] == '\0'))
+ continue;
+ strcpy(filename, de->d_name);
+ open_device(devname);
+ }
+ closedir(dir);
+ return 0;
+}
+
+int init_getevent() {
+ int res;
+ const char* device_path = "/dev/input";
+
+ nfds = 1;
+ ufds = reinterpret_cast<pollfd*>(calloc(1, sizeof(ufds[0])));
+ ufds[0].fd = inotify_init();
+ ufds[0].events = POLLIN;
+
+ res = inotify_add_watch(ufds[0].fd, device_path, IN_DELETE | IN_CREATE);
+ if (res < 0) {
+ return 1;
+ }
+ res = scan_dir(device_path);
+ if (res < 0) {
+ return 1;
+ }
+ return 0;
+}
+
+void uninit_getevent() {
+ int i;
+ for (i = 0; i < nfds; i++) {
+ close(ufds[i].fd);
+ }
+ free(ufds);
+ ufds = 0;
+ nfds = 0;
+}
+
+int get_event(struct input_event* event, int timeout) {
+ int res;
+ int i;
+ int pollres;
+ const char* device_path = "/dev/input";
+ while (1) {
+ pollres = poll(ufds, nfds, timeout);
+ if (pollres == 0) {
+ return 1;
+ }
+ if (ufds[0].revents & POLLIN) {
+ read_notify(device_path, ufds[0].fd);
+ }
+ for (i = 1; i < nfds; i++) {
+ if (ufds[i].revents) {
+ if (ufds[i].revents & POLLIN) {
+ res = read(ufds[i].fd, event, sizeof(*event));
+ if (res < static_cast<int>(sizeof(event))) {
+ fprintf(stderr, "could not get event\n");
+ return -1;
+ }
+ return 0;
+ }
+ }
+ }
+ }
+ return 0;
+}
diff --git a/debuggerd/mips/machine.c b/debuggerd/mips/machine.c
deleted file mode 100644
index 489f3c5..0000000
--- a/debuggerd/mips/machine.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* system/debuggerd/debuggerd.c
-**
-** Copyright 2012, 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 <stddef.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/ptrace.h>
-
-#include <corkscrew/ptrace.h>
-
-#include <sys/user.h>
-
-#include "../utility.h"
-#include "../machine.h"
-
-/* enable to dump memory pointed to by every register */
-#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
-
-#define R(x) ((unsigned int)(x))
-
-static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scope_flags) {
- 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(log, scope_flags, " %s %s\n", code_buffer, ascii_buffer);
- }
-}
-
-/*
- * If configured to do so, dump memory around *all* registers
- * for the crashing thread.
- */
-void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
- pt_regs_mips_t r;
- if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
- return;
- }
-
- if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
- static const char REG_NAMES[] = "$0atv0v1a0a1a2a3t0t1t2t3t4t5t6t7s0s1s2s3s4s5s6s7t8t9k0k1gpsps8ra";
-
- for (int reg = 0; reg < 32; reg++) {
- /* skip uninteresting registers */
- if (reg == 0 /* $0 */
- || reg == 26 /* $k0 */
- || reg == 27 /* $k1 */
- || reg == 31 /* $ra (done below) */
- )
- continue;
-
- uintptr_t addr = R(r.regs[reg]);
-
- /*
- * Don't bother if it looks like a small int or ~= null, or if
- * it's in the kernel area.
- */
- if (addr < 4096 || addr >= 0x80000000) {
- continue;
- }
-
- _LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", ®_NAMES[reg * 2]);
- dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
- }
- }
-
- unsigned int pc = R(r.cp0_epc);
- unsigned int ra = R(r.regs[31]);
-
- _LOG(log, scope_flags, "\ncode around pc:\n");
- dump_memory(log, tid, (uintptr_t)pc, scope_flags);
-
- if (pc != ra) {
- _LOG(log, scope_flags, "\ncode around ra:\n");
- dump_memory(log, tid, (uintptr_t)ra, scope_flags);
- }
-}
-
-void dump_registers(log_t* log, pid_t tid, int scope_flags)
-{
- pt_regs_mips_t r;
- if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
- _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
- return;
- }
-
- _LOG(log, scope_flags, " zr %08x at %08x v0 %08x v1 %08x\n",
- R(r.regs[0]), R(r.regs[1]), R(r.regs[2]), R(r.regs[3]));
- _LOG(log, scope_flags, " a0 %08x a1 %08x a2 %08x a3 %08x\n",
- R(r.regs[4]), R(r.regs[5]), R(r.regs[6]), R(r.regs[7]));
- _LOG(log, scope_flags, " t0 %08x t1 %08x t2 %08x t3 %08x\n",
- R(r.regs[8]), R(r.regs[9]), R(r.regs[10]), R(r.regs[11]));
- _LOG(log, scope_flags, " t4 %08x t5 %08x t6 %08x t7 %08x\n",
- R(r.regs[12]), R(r.regs[13]), R(r.regs[14]), R(r.regs[15]));
- _LOG(log, scope_flags, " s0 %08x s1 %08x s2 %08x s3 %08x\n",
- R(r.regs[16]), R(r.regs[17]), R(r.regs[18]), R(r.regs[19]));
- _LOG(log, scope_flags, " s4 %08x s5 %08x s6 %08x s7 %08x\n",
- R(r.regs[20]), R(r.regs[21]), R(r.regs[22]), R(r.regs[23]));
- _LOG(log, scope_flags, " t8 %08x t9 %08x k0 %08x k1 %08x\n",
- R(r.regs[24]), R(r.regs[25]), R(r.regs[26]), R(r.regs[27]));
- _LOG(log, scope_flags, " gp %08x sp %08x s8 %08x ra %08x\n",
- R(r.regs[28]), R(r.regs[29]), R(r.regs[30]), R(r.regs[31]));
- _LOG(log, scope_flags, " hi %08x lo %08x bva %08x epc %08x\n",
- R(r.hi), R(r.lo), R(r.cp0_badvaddr), R(r.cp0_epc));
-}
diff --git a/debuggerd/mips/machine.cpp b/debuggerd/mips/machine.cpp
new file mode 100644
index 0000000..d1a7f2d
--- /dev/null
+++ b/debuggerd/mips/machine.cpp
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2012, 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 <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+
+#include <corkscrew/ptrace.h>
+
+#include <sys/user.h>
+
+#include "../utility.h"
+#include "../machine.h"
+
+// enable to dump memory pointed to by every register
+#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
+
+#define R(x) (static_cast<unsigned int>(x))
+
+static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scope_flags) {
+ 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(log, scope_flags, " %s %s\n", code_buffer, ascii_buffer);
+ }
+}
+
+// If configured to do so, dump memory around *all* registers
+// for the crashing thread.
+void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
+ pt_regs_mips_t r;
+ if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+ return;
+ }
+
+ if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
+ static const char REG_NAMES[] = "$0atv0v1a0a1a2a3t0t1t2t3t4t5t6t7s0s1s2s3s4s5s6s7t8t9k0k1gpsps8ra";
+
+ for (int reg = 0; reg < 32; reg++) {
+ // skip uninteresting registers
+ if (reg == 0 // $0
+ || reg == 26 // $k0
+ || reg == 27 // $k1
+ || reg == 31 // $ra (done below)
+ )
+ continue;
+
+ uintptr_t addr = R(r.regs[reg]);
+
+ // Don't bother if it looks like a small int or ~= null, or if
+ // it's in the kernel area.
+ if (addr < 4096 || addr >= 0x80000000) {
+ continue;
+ }
+
+ _LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", ®_NAMES[reg * 2]);
+ dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
+ }
+ }
+
+ unsigned int pc = R(r.cp0_epc);
+ unsigned int ra = R(r.regs[31]);
+
+ _LOG(log, scope_flags, "\ncode around pc:\n");
+ dump_memory(log, tid, (uintptr_t)pc, scope_flags);
+
+ if (pc != ra) {
+ _LOG(log, scope_flags, "\ncode around ra:\n");
+ dump_memory(log, tid, (uintptr_t)ra, scope_flags);
+ }
+}
+
+void dump_registers(log_t* log, pid_t tid, int scope_flags) {
+ pt_regs_mips_t r;
+ if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+ _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
+ return;
+ }
+
+ _LOG(log, scope_flags, " zr %08x at %08x v0 %08x v1 %08x\n",
+ R(r.regs[0]), R(r.regs[1]), R(r.regs[2]), R(r.regs[3]));
+ _LOG(log, scope_flags, " a0 %08x a1 %08x a2 %08x a3 %08x\n",
+ R(r.regs[4]), R(r.regs[5]), R(r.regs[6]), R(r.regs[7]));
+ _LOG(log, scope_flags, " t0 %08x t1 %08x t2 %08x t3 %08x\n",
+ R(r.regs[8]), R(r.regs[9]), R(r.regs[10]), R(r.regs[11]));
+ _LOG(log, scope_flags, " t4 %08x t5 %08x t6 %08x t7 %08x\n",
+ R(r.regs[12]), R(r.regs[13]), R(r.regs[14]), R(r.regs[15]));
+ _LOG(log, scope_flags, " s0 %08x s1 %08x s2 %08x s3 %08x\n",
+ R(r.regs[16]), R(r.regs[17]), R(r.regs[18]), R(r.regs[19]));
+ _LOG(log, scope_flags, " s4 %08x s5 %08x s6 %08x s7 %08x\n",
+ R(r.regs[20]), R(r.regs[21]), R(r.regs[22]), R(r.regs[23]));
+ _LOG(log, scope_flags, " t8 %08x t9 %08x k0 %08x k1 %08x\n",
+ R(r.regs[24]), R(r.regs[25]), R(r.regs[26]), R(r.regs[27]));
+ _LOG(log, scope_flags, " gp %08x sp %08x s8 %08x ra %08x\n",
+ R(r.regs[28]), R(r.regs[29]), R(r.regs[30]), R(r.regs[31]));
+ _LOG(log, scope_flags, " hi %08x lo %08x bva %08x epc %08x\n",
+ R(r.hi), R(r.lo), R(r.cp0_badvaddr), R(r.cp0_epc));
+}
diff --git a/debuggerd/tombstone.c b/debuggerd/tombstone.c
deleted file mode 100644
index 1b08e8e..0000000
--- a/debuggerd/tombstone.c
+++ /dev/null
@@ -1,828 +0,0 @@
-/*
- * Copyright (C) 2012 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 <stddef.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <string.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <dirent.h>
-#include <time.h>
-#include <sys/ptrace.h>
-#include <sys/stat.h>
-
-#include <private/android_filesystem_config.h>
-
-#include <log/logger.h>
-#include <cutils/properties.h>
-
-#include <backtrace/backtrace.h>
-
-#include <sys/socket.h>
-#include <linux/un.h>
-
-#include <selinux/android.h>
-
-#include "machine.h"
-#include "tombstone.h"
-#include "backtrace.h"
-
-#define STACK_WORDS 16
-
-#define MAX_TOMBSTONES 10
-#define TOMBSTONE_DIR "/data/tombstones"
-
-/* Must match the path defined in NativeCrashListener.java */
-#define NCRASH_SOCKET_PATH "/data/system/ndebugsocket"
-
-#define typecheck(x,y) { \
- typeof(x) __dummy1; \
- typeof(y) __dummy2; \
- (void)(&__dummy1 == &__dummy2); }
-
-
-static bool signal_has_address(int sig) {
- switch (sig) {
- case SIGILL:
- case SIGFPE:
- case SIGSEGV:
- case SIGBUS:
- return true;
- default:
- return false;
- }
-}
-
-static const char *get_signame(int sig)
-{
- switch(sig) {
- case SIGILL: return "SIGILL";
- case SIGABRT: return "SIGABRT";
- case SIGBUS: return "SIGBUS";
- case SIGFPE: return "SIGFPE";
- case SIGSEGV: return "SIGSEGV";
- case SIGPIPE: return "SIGPIPE";
-#ifdef SIGSTKFLT
- case SIGSTKFLT: return "SIGSTKFLT";
-#endif
- case SIGSTOP: return "SIGSTOP";
- default: return "?";
- }
-}
-
-static const char *get_sigcode(int signo, int code)
-{
- // Try the signal-specific codes...
- switch (signo) {
- case SIGILL:
- switch (code) {
- case ILL_ILLOPC: return "ILL_ILLOPC";
- case ILL_ILLOPN: return "ILL_ILLOPN";
- case ILL_ILLADR: return "ILL_ILLADR";
- case ILL_ILLTRP: return "ILL_ILLTRP";
- case ILL_PRVOPC: return "ILL_PRVOPC";
- case ILL_PRVREG: return "ILL_PRVREG";
- case ILL_COPROC: return "ILL_COPROC";
- case ILL_BADSTK: return "ILL_BADSTK";
- }
- break;
- case SIGBUS:
- switch (code) {
- case BUS_ADRALN: return "BUS_ADRALN";
- case BUS_ADRERR: return "BUS_ADRERR";
- case BUS_OBJERR: return "BUS_OBJERR";
- }
- break;
- case SIGFPE:
- switch (code) {
- case FPE_INTDIV: return "FPE_INTDIV";
- case FPE_INTOVF: return "FPE_INTOVF";
- case FPE_FLTDIV: return "FPE_FLTDIV";
- case FPE_FLTOVF: return "FPE_FLTOVF";
- case FPE_FLTUND: return "FPE_FLTUND";
- case FPE_FLTRES: return "FPE_FLTRES";
- case FPE_FLTINV: return "FPE_FLTINV";
- case FPE_FLTSUB: return "FPE_FLTSUB";
- }
- break;
- case SIGSEGV:
- switch (code) {
- case SEGV_MAPERR: return "SEGV_MAPERR";
- case SEGV_ACCERR: return "SEGV_ACCERR";
- }
- break;
- case SIGTRAP:
- switch (code) {
- case TRAP_BRKPT: return "TRAP_BRKPT";
- case TRAP_TRACE: return "TRAP_TRACE";
- }
- break;
- }
- // Then the other codes...
- switch (code) {
- case SI_USER: return "SI_USER";
-#if defined(SI_KERNEL)
- case SI_KERNEL: return "SI_KERNEL";
-#endif
- case SI_QUEUE: return "SI_QUEUE";
- case SI_TIMER: return "SI_TIMER";
- case SI_MESGQ: return "SI_MESGQ";
- case SI_ASYNCIO: return "SI_ASYNCIO";
-#if defined(SI_SIGIO)
- case SI_SIGIO: return "SI_SIGIO";
-#endif
-#if defined(SI_TKILL)
- case SI_TKILL: return "SI_TKILL";
-#endif
- }
- // Then give up...
- return "?";
-}
-
-static void dump_revision_info(log_t* log)
-{
- char revision[PROPERTY_VALUE_MAX];
-
- property_get("ro.revision", revision, "unknown");
-
- _LOG(log, SCOPE_AT_FAULT, "Revision: '%s'\n", revision);
-}
-
-static void dump_build_info(log_t* log)
-{
- char fingerprint[PROPERTY_VALUE_MAX];
-
- property_get("ro.build.fingerprint", fingerprint, "unknown");
-
- _LOG(log, SCOPE_AT_FAULT, "Build fingerprint: '%s'\n", fingerprint);
-}
-
-static void dump_fault_addr(log_t* log, pid_t tid, int sig)
-{
- siginfo_t si;
-
- memset(&si, 0, sizeof(si));
- if(ptrace(PTRACE_GETSIGINFO, tid, 0, &si)){
- _LOG(log, SCOPE_AT_FAULT, "cannot get siginfo: %s\n", strerror(errno));
- } else if (signal_has_address(sig)) {
- _LOG(log, SCOPE_AT_FAULT, "signal %d (%s), code %d (%s), fault addr %08x\n",
- sig, get_signame(sig),
- si.si_code, get_sigcode(sig, si.si_code),
- (uintptr_t) si.si_addr);
- } else {
- _LOG(log, SCOPE_AT_FAULT, "signal %d (%s), code %d (%s), fault addr --------\n",
- sig, get_signame(sig), si.si_code, get_sigcode(sig, si.si_code));
- }
-}
-
-static void dump_thread_info(log_t* log, pid_t pid, pid_t tid, int scope_flags) {
- char path[64];
- char threadnamebuf[1024];
- char* threadname = NULL;
- FILE *fp;
-
- snprintf(path, sizeof(path), "/proc/%d/comm", tid);
- if ((fp = fopen(path, "r"))) {
- threadname = fgets(threadnamebuf, sizeof(threadnamebuf), fp);
- fclose(fp);
- if (threadname) {
- size_t len = strlen(threadname);
- if (len && threadname[len - 1] == '\n') {
- threadname[len - 1] = '\0';
- }
- }
- }
-
- if (IS_AT_FAULT(scope_flags)) {
- char procnamebuf[1024];
- char* procname = NULL;
-
- snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
- if ((fp = fopen(path, "r"))) {
- procname = fgets(procnamebuf, sizeof(procnamebuf), fp);
- fclose(fp);
- }
-
- _LOG(log, SCOPE_AT_FAULT, "pid: %d, tid: %d, name: %s >>> %s <<<\n", pid, tid,
- threadname ? threadname : "UNKNOWN",
- procname ? procname : "UNKNOWN");
- } else {
- _LOG(log, 0, "pid: %d, tid: %d, name: %s\n",
- pid, tid, threadname ? threadname : "UNKNOWN");
- }
-}
-
-static void dump_stack_segment(const backtrace_context_t* context, log_t* log,
- int scope_flags, uintptr_t *sp, size_t words, int label) {
- for (size_t i = 0; i < words; i++) {
- uint32_t stack_content;
- if (!backtrace_read_word(context, *sp, &stack_content)) {
- break;
- }
-
- const char* map_name = backtrace_get_map_name(context, stack_content, NULL);
- if (!map_name) {
- map_name = "";
- }
- uintptr_t offset = 0;
- char* func_name = backtrace_get_func_name(context, stack_content, &offset);
- if (func_name) {
- if (!i && label >= 0) {
- if (offset) {
- _LOG(log, scope_flags, " #%02d %08x %08x %s (%s+%u)\n",
- label, *sp, stack_content, map_name, func_name, offset);
- } else {
- _LOG(log, scope_flags, " #%02d %08x %08x %s (%s)\n",
- label, *sp, stack_content, map_name, func_name);
- }
- } else {
- if (offset) {
- _LOG(log, scope_flags, " %08x %08x %s (%s+%u)\n",
- *sp, stack_content, map_name, func_name, offset);
- } else {
- _LOG(log, scope_flags, " %08x %08x %s (%s)\n",
- *sp, stack_content, map_name, func_name);
- }
- }
- free(func_name);
- } else {
- if (!i && label >= 0) {
- _LOG(log, scope_flags, " #%02d %08x %08x %s\n",
- label, *sp, stack_content, map_name);
- } else {
- _LOG(log, scope_flags, " %08x %08x %s\n",
- *sp, stack_content, map_name);
- }
- }
-
- *sp += sizeof(uint32_t);
- }
-}
-
-static void dump_stack(const backtrace_context_t* context, log_t* log, int scope_flags) {
- const backtrace_t* backtrace = context->backtrace;
- size_t first = 0, last;
- for (size_t i = 0; i < backtrace->num_frames; i++) {
- if (backtrace->frames[i].sp) {
- if (!first) {
- first = i+1;
- }
- last = i;
- }
- }
- if (!first) {
- return;
- }
- first--;
-
- scope_flags |= SCOPE_SENSITIVE;
-
- // Dump a few words before the first frame.
- uintptr_t sp = backtrace->frames[first].sp - STACK_WORDS * sizeof(uint32_t);
- dump_stack_segment(context, log, scope_flags, &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_data_t* frame = &backtrace->frames[i];
- if (sp != frame->sp) {
- _LOG(log, scope_flags, " ........ ........\n");
- sp = frame->sp;
- }
- if (i - first == 3) {
- scope_flags &= (~SCOPE_AT_FAULT);
- }
- if (i == last) {
- dump_stack_segment(context, log, scope_flags, &sp, STACK_WORDS, i);
- if (sp < frame->sp + frame->stack_size) {
- _LOG(log, scope_flags, " ........ ........\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, log, scope_flags, &sp, words, i);
- }
- }
-}
-
-static void dump_backtrace_and_stack(const backtrace_context_t* context,
- log_t* log, int scope_flags) {
- if (context->backtrace->num_frames) {
- _LOG(log, scope_flags, "\nbacktrace:\n");
- dump_backtrace_to_log(context, log, scope_flags, " ");
-
- _LOG(log, scope_flags, "\nstack:\n");
- dump_stack(context, log, scope_flags);
- }
-}
-
-static void dump_map(log_t* log, const backtrace_map_info_t* m, const char* what, int scope_flags) {
- if (m != NULL) {
- _LOG(log, scope_flags, " %08x-%08x %c%c%c %s\n", m->start, m->end,
- m->is_readable ? 'r' : '-',
- m->is_writable ? 'w' : '-',
- m->is_executable ? 'x' : '-',
- m->name);
- } else {
- _LOG(log, scope_flags, " (no %s)\n", what);
- }
-}
-
-static void dump_nearby_maps(const backtrace_map_info_t* map_info_list, log_t* log, pid_t tid, int scope_flags) {
- scope_flags |= SCOPE_SENSITIVE;
- siginfo_t si;
- memset(&si, 0, sizeof(si));
- if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) {
- _LOG(log, scope_flags, "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(log, scope_flags, "\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.
- */
- const backtrace_map_info_t* map = map_info_list;
- const backtrace_map_info_t* next = NULL;
- const backtrace_map_info_t* prev = NULL;
- while (map != NULL) {
- if (addr >= map->start && addr < map->end) {
- 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).
- */
- dump_map(log, next, "map below", scope_flags);
- dump_map(log, map, "map for address", scope_flags);
- dump_map(log, prev, "map above", scope_flags);
-}
-
-static void dump_thread(const backtrace_context_t* context, log_t* log,
- int scope_flags, int* total_sleep_time_usec) {
- const backtrace_t* backtrace = context->backtrace;
- wait_for_stop(backtrace->tid, total_sleep_time_usec);
-
- dump_registers(log, backtrace->tid, scope_flags);
- dump_backtrace_and_stack(context, log, scope_flags);
- if (IS_AT_FAULT(scope_flags)) {
- dump_memory_and_code(log, backtrace->tid, scope_flags);
- dump_nearby_maps(backtrace->map_info_list, log, backtrace->tid, scope_flags);
- }
-}
-
-/* Return true if some thread is not detached cleanly */
-static bool dump_sibling_thread_report(
- log_t* log, pid_t pid, pid_t tid, int* total_sleep_time_usec, backtrace_map_info_t* map_info) {
- char task_path[64];
- snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
-
- DIR* d = opendir(task_path);
- /* Bail early if the task directory cannot be opened */
- 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) {
- /* Ignore "." and ".." */
- if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
- continue;
- }
-
- /* The main thread at fault has been handled individually */
- char* end;
- pid_t new_tid = strtoul(de->d_name, &end, 10);
- if (*end || new_tid == tid) {
- continue;
- }
-
- /* Skip this thread if cannot ptrace it */
- if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) {
- continue;
- }
-
- _LOG(log, 0, "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n");
- dump_thread_info(log, pid, new_tid, 0);
- backtrace_context_t new_context;
- if (backtrace_create_context_with_map(&new_context, pid, new_tid, 0, map_info)) {
- dump_thread(&new_context, log, 0, total_sleep_time_usec);
- backtrace_destroy_context(&new_context);
- }
-
- if (ptrace(PTRACE_DETACH, new_tid, 0, 0) != 0) {
- LOG("ptrace detach from %d failed: %s\n", new_tid, strerror(errno));
- detach_failed = true;
- }
- }
-
- closedir(d);
- return detach_failed;
-}
-
-/*
- * Reads the contents of the specified log device, filters out the entries
- * that don't match the specified pid, and writes them to the tombstone file.
- *
- * If "tailOnly" is set, we only print the last few lines.
- */
-static void dump_log_file(log_t* log, pid_t pid, const char* filename,
- bool tailOnly)
-{
- bool first = true;
-
- /* circular buffer, for "tailOnly" mode */
- const int kShortLogMaxLines = 5;
- const int kShortLogLineLen = 256;
- char shortLog[kShortLogMaxLines][kShortLogLineLen];
- int shortLogCount = 0;
- int shortLogNext = 0;
-
- int logfd = open(filename, O_RDONLY | O_NONBLOCK);
- if (logfd < 0) {
- XLOG("Unable to open %s: %s\n", filename, strerror(errno));
- return;
- }
-
- union {
- unsigned char buf[LOGGER_ENTRY_MAX_LEN + 1];
- struct logger_entry entry;
- } log_entry;
-
- while (true) {
- ssize_t actual = read(logfd, log_entry.buf, LOGGER_ENTRY_MAX_LEN);
- if (actual < 0) {
- if (errno == EINTR) {
- /* interrupted by signal, retry */
- continue;
- } else if (errno == EAGAIN) {
- /* non-blocking EOF; we're done */
- break;
- } else {
- _LOG(log, 0, "Error while reading log: %s\n",
- strerror(errno));
- break;
- }
- } else if (actual == 0) {
- _LOG(log, 0, "Got zero bytes while reading log: %s\n",
- strerror(errno));
- break;
- }
-
- /*
- * NOTE: if you XLOG something here, this will spin forever,
- * because you will be writing as fast as you're reading. Any
- * high-frequency debug diagnostics should just be written to
- * the tombstone file.
- */
-
- struct logger_entry* entry = &log_entry.entry;
-
- if (entry->pid != (int32_t) pid) {
- /* wrong pid, ignore */
- continue;
- }
-
- if (first) {
- _LOG(log, 0, "--------- %slog %s\n",
- tailOnly ? "tail end of " : "", filename);
- first = false;
- }
-
- /*
- * Msg format is: <priority:1><tag:N>\0<message:N>\0
- *
- * We want to display it in the same format as "logcat -v threadtime"
- * (although in this case the pid is redundant).
- *
- * TODO: scan for line breaks ('\n') and display each text line
- * on a separate line, prefixed with the header, like logcat does.
- */
- static const char* kPrioChars = "!.VDIWEFS";
- unsigned char prio = entry->msg[0];
- char* tag = entry->msg + 1;
- char* msg = tag + strlen(tag) + 1;
-
- /* consume any trailing newlines */
- char* eatnl = msg + strlen(msg) - 1;
- while (eatnl >= msg && *eatnl == '\n') {
- *eatnl-- = '\0';
- }
-
- char prioChar = (prio < strlen(kPrioChars) ? kPrioChars[prio] : '?');
-
- char timeBuf[32];
- time_t sec = (time_t) entry->sec;
- struct tm tmBuf;
- struct tm* ptm;
- ptm = localtime_r(&sec, &tmBuf);
- strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm);
-
- if (tailOnly) {
- snprintf(shortLog[shortLogNext], kShortLogLineLen,
- "%s.%03d %5d %5d %c %-8s: %s",
- timeBuf, entry->nsec / 1000000, entry->pid, entry->tid,
- prioChar, tag, msg);
- shortLogNext = (shortLogNext + 1) % kShortLogMaxLines;
- shortLogCount++;
- } else {
- _LOG(log, 0, "%s.%03d %5d %5d %c %-8s: %s\n",
- timeBuf, entry->nsec / 1000000, entry->pid, entry->tid,
- prioChar, tag, msg);
- }
- }
-
- if (tailOnly) {
- int i;
-
- /*
- * If we filled the buffer, we want to start at "next", which has
- * the oldest entry. If we didn't, we want to start at zero.
- */
- if (shortLogCount < kShortLogMaxLines) {
- shortLogNext = 0;
- } else {
- shortLogCount = kShortLogMaxLines; /* cap at window size */
- }
-
- for (i = 0; i < shortLogCount; i++) {
- _LOG(log, 0, "%s\n", shortLog[shortLogNext]);
- shortLogNext = (shortLogNext + 1) % kShortLogMaxLines;
- }
- }
-
- close(logfd);
-}
-
-/*
- * 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(log_t* log, pid_t pid, bool tailOnly)
-{
- dump_log_file(log, pid, "/dev/log/system", tailOnly);
- dump_log_file(log, pid, "/dev/log/main", tailOnly);
-}
-
-static void dump_abort_message(const backtrace_context_t* context, log_t* log, uintptr_t address) {
- if (address == 0) {
- return;
- }
-
- address += sizeof(size_t); // Skip the buffer length.
-
- char msg[512];
- memset(msg, 0, sizeof(msg));
- char* p = &msg[0];
- while (p < &msg[sizeof(msg)]) {
- uint32_t data;
- if (!backtrace_read_word(context, address, &data)) {
- break;
- }
- address += sizeof(uint32_t);
-
- if ((*p++ = (data >> 0) & 0xff) == 0) {
- break;
- }
- if ((*p++ = (data >> 8) & 0xff) == 0) {
- break;
- }
- if ((*p++ = (data >> 16) & 0xff) == 0) {
- break;
- }
- if ((*p++ = (data >> 24) & 0xff) == 0) {
- break;
- }
- }
- msg[sizeof(msg) - 1] = '\0';
-
- _LOG(log, SCOPE_AT_FAULT, "Abort message: '%s'\n", msg);
-}
-
-/*
- * Dumps all information about the specified pid to the tombstone.
- */
-static bool dump_crash(log_t* log, pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address,
- bool dump_sibling_threads, int* total_sleep_time_usec)
-{
- /* 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 want_logs = (value[0] == '1');
-
- if (log->amfd >= 0) {
- /*
- * Activity Manager protocol: binary 32-bit network-byte-order ints for the
- * pid and signal number, followed by the raw text of the dump, culminating
- * in a zero byte that marks end-of-data.
- */
- uint32_t datum = htonl(pid);
- TEMP_FAILURE_RETRY( write(log->amfd, &datum, 4) );
- datum = htonl(signal);
- TEMP_FAILURE_RETRY( write(log->amfd, &datum, 4) );
- }
-
- _LOG(log, SCOPE_AT_FAULT,
- "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
- dump_build_info(log);
- dump_revision_info(log);
- dump_thread_info(log, pid, tid, SCOPE_AT_FAULT);
- if (signal) {
- dump_fault_addr(log, tid, signal);
- }
-
- backtrace_context_t context;
- /* Gather the map info once for all this process' threads. */
- backtrace_map_info_t* map_info = backtrace_create_map_info_list(pid);
- if (backtrace_create_context_with_map(&context, pid, tid, 0, map_info)) {
- dump_abort_message(&context, log, abort_msg_address);
- dump_thread(&context, log, SCOPE_AT_FAULT, total_sleep_time_usec);
- backtrace_destroy_context(&context);
- }
-
- if (want_logs) {
- dump_logs(log, pid, true);
- }
-
- bool detach_failed = false;
- if (dump_sibling_threads) {
- detach_failed = dump_sibling_thread_report(log, pid, tid, total_sleep_time_usec, map_info);
- }
-
- /* Destroy the previously created map info. */
- backtrace_destroy_map_info_list(map_info);
-
- if (want_logs) {
- dump_logs(log, pid, false);
- }
-
- /* send EOD to the Activity Manager, then wait for its ack to avoid racing ahead
- * and killing the target out from under it */
- if (log->amfd >= 0) {
- uint8_t eodMarker = 0;
- TEMP_FAILURE_RETRY( write(log->amfd, &eodMarker, 1) );
- /* 3 sec timeout reading the ack; we're fine if that happens */
- TEMP_FAILURE_RETRY( read(log->amfd, &eodMarker, 1) );
- }
-
- return detach_failed;
-}
-
-/*
- * 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);
-}
-
-static int activity_manager_connect() {
- int amfd = socket(PF_UNIX, SOCK_STREAM, 0);
- if (amfd >= 0) {
- struct sockaddr_un address;
- int err;
-
- memset(&address, 0, sizeof(address));
- address.sun_family = AF_UNIX;
- strncpy(address.sun_path, NCRASH_SOCKET_PATH, sizeof(address.sun_path));
- err = TEMP_FAILURE_RETRY( connect(amfd, (struct sockaddr*) &address, sizeof(address)) );
- if (!err) {
- struct timeval tv;
- memset(&tv, 0, sizeof(tv));
- tv.tv_sec = 1; // tight leash
- err = setsockopt(amfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
- if (!err) {
- tv.tv_sec = 3; // 3 seconds on handshake read
- err = setsockopt(amfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
- }
- }
- if (err) {
- close(amfd);
- amfd = -1;
- }
- }
-
- return amfd;
-}
-
-char* engrave_tombstone(pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address,
- bool dump_sibling_threads, bool quiet, bool* detach_failed,
- int* total_sleep_time_usec) {
- mkdir(TOMBSTONE_DIR, 0755);
- chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM);
-
- if (selinux_android_restorecon(TOMBSTONE_DIR) == -1) {
- *detach_failed = false;
- return NULL;
- }
-
- int fd;
- char* path = find_and_open_tombstone(&fd);
- if (!path) {
- *detach_failed = false;
- return NULL;
- }
-
- log_t log;
- log.tfd = fd;
- log.amfd = activity_manager_connect();
- log.quiet = quiet;
- *detach_failed = dump_crash(&log, pid, tid, signal, abort_msg_address, dump_sibling_threads,
- total_sleep_time_usec);
-
- close(log.amfd);
- close(fd);
- return path;
-}
diff --git a/debuggerd/tombstone.cpp b/debuggerd/tombstone.cpp
new file mode 100644
index 0000000..9c5d8c0
--- /dev/null
+++ b/debuggerd/tombstone.cpp
@@ -0,0 +1,784 @@
+/*
+ * Copyright (C) 2012 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 <stddef.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <dirent.h>
+#include <time.h>
+#include <sys/ptrace.h>
+#include <sys/stat.h>
+#include <inttypes.h>
+
+#include <private/android_filesystem_config.h>
+
+#include <log/logger.h>
+#include <cutils/properties.h>
+
+#include <backtrace/Backtrace.h>
+
+#include <sys/socket.h>
+#include <linux/un.h>
+
+#include <selinux/android.h>
+
+#include <UniquePtr.h>
+
+#include "machine.h"
+#include "tombstone.h"
+#include "backtrace.h"
+
+#define STACK_WORDS 16
+
+#define MAX_TOMBSTONES 10
+#define TOMBSTONE_DIR "/data/tombstones"
+
+// Must match the path defined in NativeCrashListener.java
+#define NCRASH_SOCKET_PATH "/data/system/ndebugsocket"
+
+#define typecheck(x,y) { \
+ typeof(x) __dummy1; \
+ typeof(y) __dummy2; \
+ (void)(&__dummy1 == &__dummy2); }
+
+
+static bool signal_has_address(int sig) {
+ switch (sig) {
+ case SIGILL:
+ case SIGFPE:
+ case SIGSEGV:
+ case SIGBUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const char* get_signame(int sig) {
+ switch(sig) {
+ case SIGILL: return "SIGILL";
+ case SIGABRT: return "SIGABRT";
+ case SIGBUS: return "SIGBUS";
+ case SIGFPE: return "SIGFPE";
+ case SIGSEGV: return "SIGSEGV";
+ case SIGPIPE: return "SIGPIPE";
+#ifdef SIGSTKFLT
+ case SIGSTKFLT: return "SIGSTKFLT";
+#endif
+ case SIGSTOP: return "SIGSTOP";
+ default: return "?";
+ }
+}
+
+static const char* get_sigcode(int signo, int code) {
+ // Try the signal-specific codes...
+ switch (signo) {
+ case SIGILL:
+ switch (code) {
+ case ILL_ILLOPC: return "ILL_ILLOPC";
+ case ILL_ILLOPN: return "ILL_ILLOPN";
+ case ILL_ILLADR: return "ILL_ILLADR";
+ case ILL_ILLTRP: return "ILL_ILLTRP";
+ case ILL_PRVOPC: return "ILL_PRVOPC";
+ case ILL_PRVREG: return "ILL_PRVREG";
+ case ILL_COPROC: return "ILL_COPROC";
+ case ILL_BADSTK: return "ILL_BADSTK";
+ }
+ break;
+ case SIGBUS:
+ switch (code) {
+ case BUS_ADRALN: return "BUS_ADRALN";
+ case BUS_ADRERR: return "BUS_ADRERR";
+ case BUS_OBJERR: return "BUS_OBJERR";
+ }
+ break;
+ case SIGFPE:
+ switch (code) {
+ case FPE_INTDIV: return "FPE_INTDIV";
+ case FPE_INTOVF: return "FPE_INTOVF";
+ case FPE_FLTDIV: return "FPE_FLTDIV";
+ case FPE_FLTOVF: return "FPE_FLTOVF";
+ case FPE_FLTUND: return "FPE_FLTUND";
+ case FPE_FLTRES: return "FPE_FLTRES";
+ case FPE_FLTINV: return "FPE_FLTINV";
+ case FPE_FLTSUB: return "FPE_FLTSUB";
+ }
+ break;
+ case SIGSEGV:
+ switch (code) {
+ case SEGV_MAPERR: return "SEGV_MAPERR";
+ case SEGV_ACCERR: return "SEGV_ACCERR";
+ }
+ break;
+ case SIGTRAP:
+ switch (code) {
+ case TRAP_BRKPT: return "TRAP_BRKPT";
+ case TRAP_TRACE: return "TRAP_TRACE";
+ }
+ break;
+ }
+ // Then the other codes...
+ switch (code) {
+ case SI_USER: return "SI_USER";
+#if defined(SI_KERNEL)
+ case SI_KERNEL: return "SI_KERNEL";
+#endif
+ case SI_QUEUE: return "SI_QUEUE";
+ case SI_TIMER: return "SI_TIMER";
+ case SI_MESGQ: return "SI_MESGQ";
+ case SI_ASYNCIO: return "SI_ASYNCIO";
+#if defined(SI_SIGIO)
+ case SI_SIGIO: return "SI_SIGIO";
+#endif
+#if defined(SI_TKILL)
+ case SI_TKILL: return "SI_TKILL";
+#endif
+ }
+ // Then give up...
+ return "?";
+}
+
+static void dump_revision_info(log_t* log) {
+ char revision[PROPERTY_VALUE_MAX];
+
+ property_get("ro.revision", revision, "unknown");
+
+ _LOG(log, SCOPE_AT_FAULT, "Revision: '%s'\n", revision);
+}
+
+static void dump_build_info(log_t* log) {
+ char fingerprint[PROPERTY_VALUE_MAX];
+
+ property_get("ro.build.fingerprint", fingerprint, "unknown");
+
+ _LOG(log, SCOPE_AT_FAULT, "Build fingerprint: '%s'\n", fingerprint);
+}
+
+static void dump_fault_addr(log_t* log, pid_t tid, int sig) {
+ siginfo_t si;
+
+ memset(&si, 0, sizeof(si));
+ if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si)){
+ _LOG(log, SCOPE_AT_FAULT, "cannot get siginfo: %s\n", strerror(errno));
+ } else if (signal_has_address(sig)) {
+ _LOG(log, SCOPE_AT_FAULT, "signal %d (%s), code %d (%s), fault addr %0*" PRIxPTR "\n",
+ sig, get_signame(sig), si.si_code, get_sigcode(sig, si.si_code),
+ sizeof(uintptr_t)*2, reinterpret_cast<uintptr_t>(si.si_addr));
+ } else {
+ _LOG(log, SCOPE_AT_FAULT, "signal %d (%s), code %d (%s), fault addr --------\n",
+ sig, get_signame(sig), si.si_code, get_sigcode(sig, si.si_code));
+ }
+}
+
+static void dump_thread_info(log_t* log, pid_t pid, pid_t tid, int scope_flags) {
+ char path[64];
+ char threadnamebuf[1024];
+ char* threadname = NULL;
+ FILE *fp;
+
+ snprintf(path, sizeof(path), "/proc/%d/comm", tid);
+ if ((fp = fopen(path, "r"))) {
+ threadname = fgets(threadnamebuf, sizeof(threadnamebuf), fp);
+ fclose(fp);
+ if (threadname) {
+ size_t len = strlen(threadname);
+ if (len && threadname[len - 1] == '\n') {
+ threadname[len - 1] = '\0';
+ }
+ }
+ }
+
+ if (IS_AT_FAULT(scope_flags)) {
+ char procnamebuf[1024];
+ char* procname = NULL;
+
+ snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
+ if ((fp = fopen(path, "r"))) {
+ procname = fgets(procnamebuf, sizeof(procnamebuf), fp);
+ fclose(fp);
+ }
+
+ _LOG(log, SCOPE_AT_FAULT, "pid: %d, tid: %d, name: %s >>> %s <<<\n", pid, tid,
+ threadname ? threadname : "UNKNOWN", procname ? procname : "UNKNOWN");
+ } else {
+ _LOG(log, 0, "pid: %d, tid: %d, name: %s\n", pid, tid, threadname ? threadname : "UNKNOWN");
+ }
+}
+
+static void dump_stack_segment(
+ Backtrace* backtrace, log_t* log, int scope_flags, uintptr_t* sp, size_t words, int label) {
+ for (size_t i = 0; i < words; i++) {
+ uint32_t stack_content;
+ if (!backtrace->ReadWord(*sp, &stack_content)) {
+ break;
+ }
+
+ const char* map_name = backtrace->GetMapName(stack_content, NULL);
+ if (!map_name) {
+ map_name = "";
+ }
+ uintptr_t offset = 0;
+ std::string func_name(backtrace->GetFunctionName(stack_content, &offset));
+ if (!func_name.empty()) {
+ if (!i && label >= 0) {
+ if (offset) {
+ _LOG(log, scope_flags, " #%02d %08x %08x %s (%s+%u)\n",
+ label, *sp, stack_content, map_name, func_name.c_str(), offset);
+ } else {
+ _LOG(log, scope_flags, " #%02d %08x %08x %s (%s)\n",
+ label, *sp, stack_content, map_name, func_name.c_str());
+ }
+ } else {
+ if (offset) {
+ _LOG(log, scope_flags, " %08x %08x %s (%s+%u)\n",
+ *sp, stack_content, map_name, func_name.c_str(), offset);
+ } else {
+ _LOG(log, scope_flags, " %08x %08x %s (%s)\n",
+ *sp, stack_content, map_name, func_name.c_str());
+ }
+ }
+ } else {
+ if (!i && label >= 0) {
+ _LOG(log, scope_flags, " #%02d %08x %08x %s\n",
+ label, *sp, stack_content, map_name);
+ } else {
+ _LOG(log, scope_flags, " %08x %08x %s\n",
+ *sp, stack_content, map_name);
+ }
+ }
+
+ *sp += sizeof(uint32_t);
+ }
+}
+
+static void dump_stack(Backtrace* backtrace, log_t* log, int scope_flags) {
+ size_t first = 0, last;
+ for (size_t i = 0; i < backtrace->NumFrames(); i++) {
+ const backtrace_frame_data_t* frame = backtrace->GetFrame(i);
+ if (frame->sp) {
+ if (!first) {
+ first = i+1;
+ }
+ last = i;
+ }
+ }
+ if (!first) {
+ return;
+ }
+ first--;
+
+ scope_flags |= SCOPE_SENSITIVE;
+
+ // Dump a few words before the first frame.
+ uintptr_t sp = backtrace->GetFrame(first)->sp - STACK_WORDS * sizeof(uint32_t);
+ dump_stack_segment(backtrace, log, scope_flags, &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_data_t* frame = backtrace->GetFrame(i);
+ if (sp != frame->sp) {
+ _LOG(log, scope_flags, " ........ ........\n");
+ sp = frame->sp;
+ }
+ if (i - first == 3) {
+ scope_flags &= (~SCOPE_AT_FAULT);
+ }
+ if (i == last) {
+ dump_stack_segment(backtrace, log, scope_flags, &sp, STACK_WORDS, i);
+ if (sp < frame->sp + frame->stack_size) {
+ _LOG(log, scope_flags, " ........ ........\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(backtrace, log, scope_flags, &sp, words, i);
+ }
+ }
+}
+
+static void dump_backtrace_and_stack(Backtrace* backtrace, log_t* log, int scope_flags) {
+ if (backtrace->NumFrames()) {
+ _LOG(log, scope_flags, "\nbacktrace:\n");
+ dump_backtrace_to_log(backtrace, log, scope_flags, " ");
+
+ _LOG(log, scope_flags, "\nstack:\n");
+ dump_stack(backtrace, log, scope_flags);
+ }
+}
+
+static void dump_map(log_t* log, const backtrace_map_info_t* m, const char* what, int scope_flags) {
+ if (m != NULL) {
+ _LOG(log, scope_flags, " %08x-%08x %c%c%c %s\n", m->start, m->end,
+ m->is_readable ? 'r' : '-', m->is_writable ? 'w' : '-',
+ m->is_executable ? 'x' : '-', m->name);
+ } else {
+ _LOG(log, scope_flags, " (no %s)\n", what);
+ }
+}
+
+static void dump_nearby_maps(const backtrace_map_info_t* map_info_list, log_t* log, pid_t tid, int scope_flags) {
+ scope_flags |= SCOPE_SENSITIVE;
+ siginfo_t si;
+ memset(&si, 0, sizeof(si));
+ if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) {
+ _LOG(log, scope_flags, "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(log, scope_flags, "\nmemory map around fault addr %" PRIxPTR ":\n",
+ reinterpret_cast<uintptr_t>(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.
+ const backtrace_map_info_t* map = map_info_list;
+ const backtrace_map_info_t* next = NULL;
+ const backtrace_map_info_t* prev = NULL;
+ while (map != NULL) {
+ if (addr >= map->start && addr < map->end) {
+ 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).
+ dump_map(log, next, "map below", scope_flags);
+ dump_map(log, map, "map for address", scope_flags);
+ dump_map(log, prev, "map above", scope_flags);
+}
+
+static void dump_thread(
+ Backtrace* backtrace, log_t* log, int scope_flags, int* total_sleep_time_usec) {
+ wait_for_stop(backtrace->Tid(), total_sleep_time_usec);
+
+ dump_registers(log, backtrace->Tid(), scope_flags);
+ dump_backtrace_and_stack(backtrace, log, scope_flags);
+ if (IS_AT_FAULT(scope_flags)) {
+ dump_memory_and_code(log, backtrace->Tid(), scope_flags);
+ dump_nearby_maps(backtrace->GetMapList(), log, backtrace->Tid(), scope_flags);
+ }
+}
+
+// Return true if some thread is not detached cleanly
+static bool dump_sibling_thread_report(
+ log_t* log, pid_t pid, pid_t tid, int* total_sleep_time_usec, backtrace_map_info_t* map_info) {
+ char task_path[64];
+ snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
+
+ DIR* d = opendir(task_path);
+ // Bail early if the task directory cannot be opened
+ 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) {
+ // Ignore "." and ".."
+ if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
+ continue;
+ }
+
+ // The main thread at fault has been handled individually
+ char* end;
+ pid_t new_tid = strtoul(de->d_name, &end, 10);
+ if (*end || new_tid == tid) {
+ continue;
+ }
+
+ // Skip this thread if cannot ptrace it
+ if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) {
+ continue;
+ }
+
+ _LOG(log, 0, "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n");
+ dump_thread_info(log, pid, new_tid, 0);
+
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(pid, new_tid, map_info));
+ if (backtrace->Unwind(0)) {
+ dump_thread(backtrace.get(), log, 0, total_sleep_time_usec);
+ }
+
+ if (ptrace(PTRACE_DETACH, new_tid, 0, 0) != 0) {
+ LOG("ptrace detach from %d failed: %s\n", new_tid, strerror(errno));
+ detach_failed = true;
+ }
+ }
+
+ closedir(d);
+ return detach_failed;
+}
+
+// Reads the contents of the specified log device, filters out the entries
+// that don't match the specified pid, and writes them to the tombstone file.
+//
+// If "tailOnly" is set, we only print the last few lines.
+static void dump_log_file(log_t* log, pid_t pid, const char* filename, bool tailOnly) {
+ bool first = true;
+
+ // circular buffer, for "tailOnly" mode
+ const int kShortLogMaxLines = 5;
+ const int kShortLogLineLen = 256;
+ char shortLog[kShortLogMaxLines][kShortLogLineLen];
+ int shortLogCount = 0;
+ int shortLogNext = 0;
+
+ int logfd = open(filename, O_RDONLY | O_NONBLOCK);
+ if (logfd < 0) {
+ XLOG("Unable to open %s: %s\n", filename, strerror(errno));
+ return;
+ }
+
+ union {
+ unsigned char buf[LOGGER_ENTRY_MAX_LEN + 1];
+ struct logger_entry entry;
+ } log_entry;
+
+ while (true) {
+ ssize_t actual = read(logfd, log_entry.buf, LOGGER_ENTRY_MAX_LEN);
+ if (actual < 0) {
+ if (errno == EINTR) {
+ // interrupted by signal, retry
+ continue;
+ } else if (errno == EAGAIN) {
+ // non-blocking EOF; we're done
+ break;
+ } else {
+ _LOG(log, 0, "Error while reading log: %s\n", strerror(errno));
+ break;
+ }
+ } else if (actual == 0) {
+ _LOG(log, 0, "Got zero bytes while reading log: %s\n", strerror(errno));
+ break;
+ }
+
+ // NOTE: if you XLOG something here, this will spin forever,
+ // because you will be writing as fast as you're reading. Any
+ // high-frequency debug diagnostics should just be written to
+ // the tombstone file.
+ struct logger_entry* entry = &log_entry.entry;
+
+ if (entry->pid != static_cast<int32_t>(pid)) {
+ // wrong pid, ignore
+ continue;
+ }
+
+ if (first) {
+ _LOG(log, 0, "--------- %slog %s\n", tailOnly ? "tail end of " : "", filename);
+ first = false;
+ }
+
+ // Msg format is: <priority:1><tag:N>\0<message:N>\0
+ //
+ // We want to display it in the same format as "logcat -v threadtime"
+ // (although in this case the pid is redundant).
+ //
+ // TODO: scan for line breaks ('\n') and display each text line
+ // on a separate line, prefixed with the header, like logcat does.
+ static const char* kPrioChars = "!.VDIWEFS";
+ unsigned char prio = entry->msg[0];
+ char* tag = entry->msg + 1;
+ char* msg = tag + strlen(tag) + 1;
+
+ // consume any trailing newlines
+ char* eatnl = msg + strlen(msg) - 1;
+ while (eatnl >= msg && *eatnl == '\n') {
+ *eatnl-- = '\0';
+ }
+
+ char prioChar = (prio < strlen(kPrioChars) ? kPrioChars[prio] : '?');
+
+ char timeBuf[32];
+ time_t sec = static_cast<time_t>(entry->sec);
+ struct tm tmBuf;
+ struct tm* ptm;
+ ptm = localtime_r(&sec, &tmBuf);
+ strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm);
+
+ if (tailOnly) {
+ snprintf(shortLog[shortLogNext], kShortLogLineLen,
+ "%s.%03d %5d %5d %c %-8s: %s",
+ timeBuf, entry->nsec / 1000000, entry->pid, entry->tid,
+ prioChar, tag, msg);
+ shortLogNext = (shortLogNext + 1) % kShortLogMaxLines;
+ shortLogCount++;
+ } else {
+ _LOG(log, 0, "%s.%03d %5d %5d %c %-8s: %s\n",
+ timeBuf, entry->nsec / 1000000, entry->pid, entry->tid, prioChar, tag, msg);
+ }
+ }
+
+ if (tailOnly) {
+ int i;
+
+ // If we filled the buffer, we want to start at "next", which has
+ // the oldest entry. If we didn't, we want to start at zero.
+ if (shortLogCount < kShortLogMaxLines) {
+ shortLogNext = 0;
+ } else {
+ shortLogCount = kShortLogMaxLines; // cap at window size
+ }
+
+ for (i = 0; i < shortLogCount; i++) {
+ _LOG(log, 0, "%s\n", shortLog[shortLogNext]);
+ shortLogNext = (shortLogNext + 1) % kShortLogMaxLines;
+ }
+ }
+
+ close(logfd);
+}
+
+// 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(log_t* log, pid_t pid, bool tailOnly) {
+ dump_log_file(log, pid, "/dev/log/system", tailOnly);
+ dump_log_file(log, pid, "/dev/log/main", tailOnly);
+}
+
+static void dump_abort_message(Backtrace* backtrace, log_t* log, uintptr_t address) {
+ if (address == 0) {
+ return;
+ }
+
+ address += sizeof(size_t); // Skip the buffer length.
+
+ char msg[512];
+ memset(msg, 0, sizeof(msg));
+ char* p = &msg[0];
+ while (p < &msg[sizeof(msg)]) {
+ uint32_t data;
+ if (!backtrace->ReadWord(address, &data)) {
+ break;
+ }
+ address += sizeof(uint32_t);
+
+ if ((*p++ = (data >> 0) & 0xff) == 0) {
+ break;
+ }
+ if ((*p++ = (data >> 8) & 0xff) == 0) {
+ break;
+ }
+ if ((*p++ = (data >> 16) & 0xff) == 0) {
+ break;
+ }
+ if ((*p++ = (data >> 24) & 0xff) == 0) {
+ break;
+ }
+ }
+ msg[sizeof(msg) - 1] = '\0';
+
+ _LOG(log, SCOPE_AT_FAULT, "Abort message: '%s'\n", msg);
+}
+
+// Dumps all information about the specified pid to the tombstone.
+static bool dump_crash(log_t* log, pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address,
+ bool dump_sibling_threads, int* total_sleep_time_usec) {
+ // 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 want_logs = (value[0] == '1');
+
+ if (log->amfd >= 0) {
+ // Activity Manager protocol: binary 32-bit network-byte-order ints for the
+ // pid and signal number, followed by the raw text of the dump, culminating
+ // in a zero byte that marks end-of-data.
+ uint32_t datum = htonl(pid);
+ TEMP_FAILURE_RETRY( write(log->amfd, &datum, 4) );
+ datum = htonl(signal);
+ TEMP_FAILURE_RETRY( write(log->amfd, &datum, 4) );
+ }
+
+ _LOG(log, SCOPE_AT_FAULT,
+ "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
+ dump_build_info(log);
+ dump_revision_info(log);
+ dump_thread_info(log, pid, tid, SCOPE_AT_FAULT);
+ if (signal) {
+ dump_fault_addr(log, tid, signal);
+ }
+
+ // Gather the map info once for all this process' threads.
+ backtrace_map_info_t* map_info = backtrace_create_map_info_list(pid);
+
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(pid, tid, map_info));
+ if (backtrace->Unwind(0)) {
+ dump_abort_message(backtrace.get(), log, abort_msg_address);
+ dump_thread(backtrace.get(), log, SCOPE_AT_FAULT, total_sleep_time_usec);
+ }
+
+ if (want_logs) {
+ dump_logs(log, pid, true);
+ }
+
+ bool detach_failed = false;
+ if (dump_sibling_threads) {
+ detach_failed = dump_sibling_thread_report(log, pid, tid, total_sleep_time_usec, map_info);
+ }
+
+ // Destroy the previously created map info.
+ backtrace_destroy_map_info_list(map_info);
+
+ if (want_logs) {
+ dump_logs(log, pid, false);
+ }
+
+ // send EOD to the Activity Manager, then wait for its ack to avoid racing ahead
+ // and killing the target out from under it
+ if (log->amfd >= 0) {
+ uint8_t eodMarker = 0;
+ TEMP_FAILURE_RETRY( write(log->amfd, &eodMarker, 1) );
+ // 3 sec timeout reading the ack; we're fine if that happens
+ TEMP_FAILURE_RETRY( read(log->amfd, &eodMarker, 1) );
+ }
+
+ return detach_failed;
+}
+
+// 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);
+}
+
+static int activity_manager_connect() {
+ int amfd = socket(PF_UNIX, SOCK_STREAM, 0);
+ if (amfd >= 0) {
+ struct sockaddr_un address;
+ int err;
+
+ memset(&address, 0, sizeof(address));
+ address.sun_family = AF_UNIX;
+ strncpy(address.sun_path, NCRASH_SOCKET_PATH, sizeof(address.sun_path));
+ err = TEMP_FAILURE_RETRY(connect(
+ amfd, reinterpret_cast<struct sockaddr*>(&address), sizeof(address)));
+ if (!err) {
+ struct timeval tv;
+ memset(&tv, 0, sizeof(tv));
+ tv.tv_sec = 1; // tight leash
+ err = setsockopt(amfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
+ if (!err) {
+ tv.tv_sec = 3; // 3 seconds on handshake read
+ err = setsockopt(amfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
+ }
+ }
+ if (err) {
+ close(amfd);
+ amfd = -1;
+ }
+ }
+
+ return amfd;
+}
+
+char* engrave_tombstone(
+ pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address, bool dump_sibling_threads,
+ bool quiet, bool* detach_failed, int* total_sleep_time_usec) {
+ mkdir(TOMBSTONE_DIR, 0755);
+ chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM);
+
+ if (selinux_android_restorecon(TOMBSTONE_DIR) == -1) {
+ *detach_failed = false;
+ return NULL;
+ }
+
+ int fd;
+ char* path = find_and_open_tombstone(&fd);
+ if (!path) {
+ *detach_failed = false;
+ return NULL;
+ }
+
+ log_t log;
+ log.tfd = fd;
+ log.amfd = activity_manager_connect();
+ log.quiet = quiet;
+ *detach_failed = dump_crash(
+ &log, pid, tid, signal, abort_msg_address, dump_sibling_threads, total_sleep_time_usec);
+
+ close(log.amfd);
+ close(fd);
+ return path;
+}
diff --git a/debuggerd/tombstone.h b/debuggerd/tombstone.h
index d4a1a96..e9878bf 100644
--- a/debuggerd/tombstone.h
+++ b/debuggerd/tombstone.h
@@ -21,8 +21,6 @@
#include <stdbool.h>
#include <sys/types.h>
-#include <corkscrew/ptrace.h>
-
/* Creates a tombstone file and writes the crash dump to it.
* Returns the path of the tombstone, which must be freed using free(). */
char* engrave_tombstone(pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address,
diff --git a/debuggerd/utility.c b/debuggerd/utility.c
deleted file mode 100644
index 41be982..0000000
--- a/debuggerd/utility.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/* system/debuggerd/utility.c
-**
-** Copyright 2008, 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 <stddef.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <signal.h>
-#include <log/logd.h>
-#include <sys/ptrace.h>
-#include <sys/wait.h>
-#include <arpa/inet.h>
-#include <assert.h>
-
-#include "utility.h"
-
-const int sleep_time_usec = 50000; /* 0.05 seconds */
-const int max_total_sleep_usec = 10000000; /* 10 seconds */
-
-static int write_to_am(int fd, const char* buf, int len) {
- int to_write = len;
- while (to_write > 0) {
- int written = TEMP_FAILURE_RETRY( write(fd, buf + len - to_write, to_write) );
- if (written < 0) {
- /* hard failure */
- LOG("AM write failure (%d / %s)\n", errno, strerror(errno));
- return -1;
- }
- to_write -= written;
- }
- return len;
-}
-
-void _LOG(log_t* log, int scopeFlags, const char *fmt, ...) {
- char buf[512];
- bool want_tfd_write;
- bool want_log_write;
- bool want_amfd_write;
- int len = 0;
-
- va_list ap;
- va_start(ap, fmt);
-
- // where is the information going to go?
- want_tfd_write = log && log->tfd >= 0;
- want_log_write = IS_AT_FAULT(scopeFlags) && (!log || !log->quiet);
- want_amfd_write = IS_AT_FAULT(scopeFlags) && !IS_SENSITIVE(scopeFlags) && log && log->amfd >= 0;
-
- // if we're going to need the literal string, generate it once here
- if (want_tfd_write || want_amfd_write) {
- vsnprintf(buf, sizeof(buf), fmt, ap);
- len = strlen(buf);
- }
-
- if (want_tfd_write) {
- write(log->tfd, buf, len);
- }
-
- if (want_log_write) {
- // whatever goes to logcat also goes to the Activity Manager
- __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap);
- if (want_amfd_write && len > 0) {
- int written = write_to_am(log->amfd, buf, len);
- if (written <= 0) {
- // timeout or other failure on write; stop informing the activity manager
- log->amfd = -1;
- }
- }
- }
- va_end(ap);
-}
-
-int wait_for_signal(pid_t tid, int* total_sleep_time_usec) {
- 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;
- }
-}
-
-void wait_for_stop(pid_t tid, int* total_sleep_time_usec) {
- siginfo_t si;
- while (TEMP_FAILURE_RETRY(ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) < 0 && errno == ESRCH) {
- if (*total_sleep_time_usec > max_total_sleep_usec) {
- LOG("timed out waiting for tid=%d to stop\n", tid);
- break;
- }
-
- usleep(sleep_time_usec);
- *total_sleep_time_usec += sleep_time_usec;
- }
-}
diff --git a/debuggerd/utility.cpp b/debuggerd/utility.cpp
new file mode 100644
index 0000000..35f061e
--- /dev/null
+++ b/debuggerd/utility.cpp
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2008, 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 <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <signal.h>
+#include <log/logd.h>
+#include <sys/ptrace.h>
+#include <sys/wait.h>
+#include <arpa/inet.h>
+#include <assert.h>
+
+#include "utility.h"
+
+const int sleep_time_usec = 50000; // 0.05 seconds
+const int max_total_sleep_usec = 10000000; // 10 seconds
+
+static int write_to_am(int fd, const char* buf, int len) {
+ int to_write = len;
+ while (to_write > 0) {
+ int written = TEMP_FAILURE_RETRY( write(fd, buf + len - to_write, to_write) );
+ if (written < 0) {
+ // hard failure
+ LOG("AM write failure (%d / %s)\n", errno, strerror(errno));
+ return -1;
+ }
+ to_write -= written;
+ }
+ return len;
+}
+
+void _LOG(log_t* log, int scopeFlags, const char* fmt, ...) {
+ char buf[512];
+ bool want_tfd_write;
+ bool want_log_write;
+ bool want_amfd_write;
+ int len = 0;
+
+ va_list ap;
+ va_start(ap, fmt);
+
+ // where is the information going to go?
+ want_tfd_write = log && log->tfd >= 0;
+ want_log_write = IS_AT_FAULT(scopeFlags) && (!log || !log->quiet);
+ want_amfd_write = IS_AT_FAULT(scopeFlags) && !IS_SENSITIVE(scopeFlags) && log && log->amfd >= 0;
+
+ // if we're going to need the literal string, generate it once here
+ if (want_tfd_write || want_amfd_write) {
+ vsnprintf(buf, sizeof(buf), fmt, ap);
+ len = strlen(buf);
+ }
+
+ if (want_tfd_write) {
+ write(log->tfd, buf, len);
+ }
+
+ if (want_log_write) {
+ // whatever goes to logcat also goes to the Activity Manager
+ __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap);
+ if (want_amfd_write && len > 0) {
+ int written = write_to_am(log->amfd, buf, len);
+ if (written <= 0) {
+ // timeout or other failure on write; stop informing the activity manager
+ log->amfd = -1;
+ }
+ }
+ }
+ va_end(ap);
+}
+
+int wait_for_signal(pid_t tid, int* total_sleep_time_usec) {
+ 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;
+ }
+}
+
+void wait_for_stop(pid_t tid, int* total_sleep_time_usec) {
+ siginfo_t si;
+ while (TEMP_FAILURE_RETRY(ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) < 0 && errno == ESRCH) {
+ if (*total_sleep_time_usec > max_total_sleep_usec) {
+ LOG("timed out waiting for tid=%d to stop\n", tid);
+ break;
+ }
+
+ usleep(sleep_time_usec);
+ *total_sleep_time_usec += sleep_time_usec;
+ }
+}
diff --git a/debuggerd/x86/machine.c b/debuggerd/x86/machine.c
deleted file mode 100644
index db44b11..0000000
--- a/debuggerd/x86/machine.c
+++ /dev/null
@@ -1,46 +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.
-*/
-
-#include <stddef.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/ptrace.h>
-
-#include "../utility.h"
-#include "../machine.h"
-
-void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
-}
-
-void dump_registers(log_t* log, pid_t tid, int scope_flags) {
- struct pt_regs r;
- if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) {
- _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
- return;
- }
- _LOG(log, scope_flags, " eax %08lx ebx %08lx ecx %08lx edx %08lx\n",
- r.eax, r.ebx, r.ecx, r.edx);
- _LOG(log, scope_flags, " esi %08lx edi %08lx\n",
- r.esi, r.edi);
- _LOG(log, scope_flags, " xcs %08x xds %08x xes %08x xfs %08x xss %08x\n",
- r.xcs, r.xds, r.xes, r.xfs, r.xss);
- _LOG(log, scope_flags, " eip %08lx ebp %08lx esp %08lx flags %08lx\n",
- r.eip, r.ebp, r.esp, r.eflags);
-}
diff --git a/debuggerd/x86/machine.cpp b/debuggerd/x86/machine.cpp
new file mode 100644
index 0000000..141f19a
--- /dev/null
+++ b/debuggerd/x86/machine.cpp
@@ -0,0 +1,45 @@
+/*
+ * 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 <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+
+#include "../utility.h"
+#include "../machine.h"
+
+void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
+}
+
+void dump_registers(log_t* log, pid_t tid, int scope_flags) {
+ struct pt_regs r;
+ if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) {
+ _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
+ return;
+ }
+ _LOG(log, scope_flags, " eax %08lx ebx %08lx ecx %08lx edx %08lx\n",
+ r.eax, r.ebx, r.ecx, r.edx);
+ _LOG(log, scope_flags, " esi %08lx edi %08lx\n",
+ r.esi, r.edi);
+ _LOG(log, scope_flags, " xcs %08x xds %08x xes %08x xfs %08x xss %08x\n",
+ r.xcs, r.xds, r.xes, r.xfs, r.xss);
+ _LOG(log, scope_flags, " eip %08lx ebp %08lx esp %08lx flags %08lx\n",
+ r.eip, r.ebp, r.esp, r.eflags);
+}
diff --git a/include/backtrace/Backtrace.h b/include/backtrace/Backtrace.h
index bf4efd3..df40b87 100644
--- a/include/backtrace/Backtrace.h
+++ b/include/backtrace/Backtrace.h
@@ -60,6 +60,7 @@
// Create a string representing the formatted line of backtrace information
// for a single frame.
virtual std::string FormatFrameData(size_t frame_num);
+ virtual std::string FormatFrameData(const backtrace_frame_data_t* frame);
pid_t Pid() { return backtrace_.pid; }
pid_t Tid() { return backtrace_.tid; }
@@ -68,9 +69,16 @@
const backtrace_t* GetBacktrace() { return &backtrace_; }
const backtrace_frame_data_t* GetFrame(size_t frame_num) {
+ if (frame_num > NumFrames()) {
+ return NULL;
+ }
return &backtrace_.frames[frame_num];
}
+ const backtrace_map_info_t* GetMapList() {
+ return map_info_;
+ }
+
protected:
Backtrace(BacktraceImpl* impl, pid_t pid, backtrace_map_info_t* map_info);
diff --git a/include/backtrace/backtrace.h b/include/backtrace/backtrace.h
index fa81f21..cfcbf0f 100644
--- a/include/backtrace/backtrace.h
+++ b/include/backtrace/backtrace.h
@@ -44,6 +44,7 @@
} backtrace_map_info_t;
typedef struct {
+ size_t num; /* The current fame number. */
uintptr_t pc; /* The absolute pc. */
uintptr_t sp; /* The top of the stack. */
size_t stack_size; /* The size of the stack, zero indicate an unknown stack size. */
diff --git a/include/cutils/atomic-aarch64.h b/include/cutils/atomic-aarch64.h
new file mode 100644
index 0000000..927379f
--- /dev/null
+++ b/include/cutils/atomic-aarch64.h
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef ANDROID_CUTILS_ATOMIC_AARCH64_H
+#define ANDROID_CUTILS_ATOMIC_AARCH64_H
+
+#include <stdint.h>
+
+#ifndef ANDROID_ATOMIC_INLINE
+#define ANDROID_ATOMIC_INLINE inline __attribute__((always_inline))
+#endif
+
+/*
+ TODOAArch64: Revisit the below functions and check for potential
+ optimizations using assembly code or otherwise.
+*/
+
+extern ANDROID_ATOMIC_INLINE
+void android_compiler_barrier(void)
+{
+ __asm__ __volatile__ ("" : : : "memory");
+}
+
+#if ANDROID_SMP == 0
+extern ANDROID_ATOMIC_INLINE
+void android_memory_barrier(void)
+{
+ android_compiler_barrier();
+}
+extern ANDROID_ATOMIC_INLINE
+void android_memory_store_barrier(void)
+{
+ android_compiler_barrier();
+}
+#else
+extern ANDROID_ATOMIC_INLINE
+void android_memory_barrier(void)
+{
+ __asm__ __volatile__ ("dmb ish" : : : "memory");
+}
+extern ANDROID_ATOMIC_INLINE
+void android_memory_store_barrier(void)
+{
+ __asm__ __volatile__ ("dmb isht" : : : "memory");
+}
+#endif
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_acquire_load(volatile const int32_t *ptr)
+{
+ int32_t value = *ptr;
+ android_memory_barrier();
+ return value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_acquire_load64(volatile const int64_t *ptr)
+{
+ int64_t value = *ptr;
+ android_memory_barrier();
+ return value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_release_load(volatile const int32_t *ptr)
+{
+ android_memory_barrier();
+ return *ptr;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_release_load64(volatile const int64_t *ptr)
+{
+ android_memory_barrier();
+ return *ptr;
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_acquire_store(int32_t value, volatile int32_t *ptr)
+{
+ *ptr = value;
+ android_memory_barrier();
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_acquire_store64(int64_t value, volatile int64_t *ptr)
+{
+ *ptr = value;
+ android_memory_barrier();
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_release_store(int32_t value, volatile int32_t *ptr)
+{
+ android_memory_barrier();
+ *ptr = value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_release_store64(int64_t value, volatile int64_t *ptr)
+{
+ android_memory_barrier();
+ *ptr = value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_cas(int32_t old_value, int32_t new_value,
+ volatile int32_t *ptr)
+{
+ return __sync_val_compare_and_swap(ptr, old_value, new_value) != old_value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_cas64(int64_t old_value, int64_t new_value,
+ volatile int64_t *ptr)
+{
+ return __sync_val_compare_and_swap(ptr, old_value, new_value) != old_value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_acquire_cas(int32_t old_value, int32_t new_value,
+ volatile int32_t *ptr)
+{
+ int status = android_atomic_cas(old_value, new_value, ptr);
+ android_memory_barrier();
+ return status;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_acquire_cas64(int64_t old_value, int64_t new_value,
+ volatile int64_t *ptr)
+{
+ int status = android_atomic_cas64(old_value, new_value, ptr);
+ android_memory_barrier();
+ return status;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_release_cas(int32_t old_value, int32_t new_value,
+ volatile int32_t *ptr)
+{
+ android_memory_barrier();
+ return android_atomic_cas(old_value, new_value, ptr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_release_cas64(int64_t old_value, int64_t new_value,
+ volatile int64_t *ptr)
+{
+ android_memory_barrier();
+ return android_atomic_cas64(old_value, new_value, ptr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_add(int32_t increment, volatile int32_t *ptr)
+{
+ int32_t prev, status;
+ android_memory_barrier();
+ do {
+ prev = *ptr;
+ status = android_atomic_cas(prev, prev + increment, ptr);
+ } while (__builtin_expect(status != 0, 0));
+ return prev;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_inc(volatile int32_t *addr)
+{
+ return android_atomic_add(1, addr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_dec(volatile int32_t *addr)
+{
+ return android_atomic_add(-1, addr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_and(int32_t value, volatile int32_t *ptr)
+{
+ int32_t prev, status;
+ android_memory_barrier();
+ do {
+ prev = *ptr;
+ status = android_atomic_cas(prev, prev & value, ptr);
+ } while (__builtin_expect(status != 0, 0));
+ return prev;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_or(int32_t value, volatile int32_t *ptr)
+{
+ int32_t prev, status;
+ android_memory_barrier();
+ do {
+ prev = *ptr;
+ status = android_atomic_cas(prev, prev | value, ptr);
+ } while (__builtin_expect(status != 0, 0));
+ return prev;
+}
+
+#endif /* ANDROID_CUTILS_ATOMIC_AARCH64_H */
diff --git a/include/cutils/atomic-inline.h b/include/cutils/atomic-inline.h
index 0b13138..29a28d5 100644
--- a/include/cutils/atomic-inline.h
+++ b/include/cutils/atomic-inline.h
@@ -43,7 +43,9 @@
# error "Must define ANDROID_SMP before including atomic-inline.h"
#endif
-#if defined(__arm__)
+#if defined(__aarch64__)
+#include <cutils/atomic-aarch64.h>
+#elif defined(__arm__)
#include <cutils/atomic-arm.h>
#elif defined(__i386__) || defined(__x86_64__)
#include <cutils/atomic-x86.h>
diff --git a/include/cutils/atomic.h b/include/cutils/atomic.h
index ae42eb8..1787e34 100644
--- a/include/cutils/atomic.h
+++ b/include/cutils/atomic.h
@@ -80,6 +80,11 @@
int32_t android_atomic_acquire_load(volatile const int32_t* addr);
int32_t android_atomic_release_load(volatile const int32_t* addr);
+#if defined (__LP64__)
+int64_t android_atomic_acquire_load64(volatile const int64_t* addr);
+int64_t android_atomic_release_load64(volatile const int64_t* addr);
+#endif
+
/*
* Perform an atomic store with "acquire" or "release" ordering.
*
@@ -89,6 +94,11 @@
void android_atomic_acquire_store(int32_t value, volatile int32_t* addr);
void android_atomic_release_store(int32_t value, volatile int32_t* addr);
+#if defined (__LP64__)
+void android_atomic_acquire_store64(int64_t value, volatile int64_t* addr);
+void android_atomic_release_store64(int64_t value, volatile int64_t* addr);
+#endif
+
/*
* Compare-and-set operation with "acquire" or "release" ordering.
*
@@ -106,6 +116,13 @@
int android_atomic_release_cas(int32_t oldvalue, int32_t newvalue,
volatile int32_t* addr);
+#if defined (__LP64__)
+int64_t android_atomic_acquire_cas64(int64_t old_value, int64_t new_value,
+ volatile int64_t *ptr);
+int64_t android_atomic_release_cas64(int64_t old_value, int64_t new_value,
+ volatile int64_t *ptr);
+#endif
+
/*
* Aliases for code using an older version of this header. These are now
* deprecated and should not be used. The definitions will be removed
diff --git a/init/util.c b/init/util.c
index 9aaa77d..5efd5be 100644
--- a/init/util.c
+++ b/init/util.c
@@ -524,31 +524,50 @@
return rc;
}
-int restorecon(const char *pathname)
+static int restorecon_sb(const char *pathname, const struct stat *sb)
{
char *secontext = NULL;
- struct stat sb;
+ char *oldsecontext = NULL;
int i;
+ if (selabel_lookup(sehandle, &secontext, pathname, sb->st_mode) < 0)
+ return -errno;
+
+ if (lgetfilecon(pathname, &oldsecontext) < 0) {
+ freecon(secontext);
+ return -errno;
+ }
+
+ if (strcmp(oldsecontext, secontext) != 0) {
+ if (lsetfilecon(pathname, secontext) < 0) {
+ freecon(oldsecontext);
+ freecon(secontext);
+ return -errno;
+ }
+ }
+ freecon(oldsecontext);
+ freecon(secontext);
+ return 0;
+}
+
+int restorecon(const char *pathname)
+{
+ struct stat sb;
+
if (is_selinux_enabled() <= 0 || !sehandle)
return 0;
if (lstat(pathname, &sb) < 0)
return -errno;
- if (selabel_lookup(sehandle, &secontext, pathname, sb.st_mode) < 0)
- return -errno;
- if (lsetfilecon(pathname, secontext) < 0) {
- freecon(secontext);
- return -errno;
- }
- freecon(secontext);
- return 0;
+
+ return restorecon_sb(pathname, &sb);
}
static int nftw_restorecon(const char* filename, const struct stat* statptr,
- int fileflags, struct FTW* pftw)
+ int fileflags __attribute__((unused)),
+ struct FTW* pftw __attribute__((unused)))
{
- restorecon(filename);
+ restorecon_sb(filename, statptr);
return 0;
}
@@ -556,5 +575,9 @@
{
int fd_limit = 20;
int flags = FTW_DEPTH | FTW_MOUNT | FTW_PHYS;
+
+ if (is_selinux_enabled() <= 0 || !sehandle)
+ return 0;
+
return nftw(pathname, nftw_restorecon, fd_limit, flags);
}
diff --git a/libbacktrace/Android.mk b/libbacktrace/Android.mk
index a6b9c2b..8995fc1 100644
--- a/libbacktrace/Android.mk
+++ b/libbacktrace/Android.mk
@@ -168,18 +168,15 @@
include $(BUILD_NATIVE_TEST)
#----------------------------------------------------------------------------
-# Only linux-x86 host versions of libbacktrace supported.
+# Only x86 host versions of libbacktrace supported.
#----------------------------------------------------------------------------
-ifeq ($(HOST_OS)-$(HOST_ARCH),linux-x86)
+ifeq ($(HOST_ARCH),x86)
#----------------------------------------------------------------------------
# The host libbacktrace library using libcorkscrew
#----------------------------------------------------------------------------
include $(CLEAR_VARS)
-LOCAL_SRC_FILES += \
- $(common_src) \
- Corkscrew.cpp \
LOCAL_CFLAGS += \
$(common_cflags) \
@@ -187,21 +184,12 @@
LOCAL_CONLYFLAGS += \
$(common_conlyflags) \
-LOCAL_CPPFLAGS += \
- $(common_cppflags) \
-
LOCAL_C_INCLUDES := \
$(common_c_includes) \
- system/core/libcorkscrew \
LOCAL_SHARED_LIBRARIES := \
libgccdemangle \
liblog \
- libcorkscrew \
-
-LOCAL_LDLIBS += \
- -ldl \
- -lrt \
LOCAL_MODULE := libbacktrace
LOCAL_MODULE_TAGS := optional
@@ -209,9 +197,38 @@
LOCAL_ADDITIONAL_DEPENDENCIES := \
$(LOCAL_PATH)/Android.mk
+ifeq ($(HOST_OS),linux)
+LOCAL_SRC_FILES += \
+ $(common_src) \
+ Corkscrew.cpp \
+
+LOCAL_C_INCLUDES += \
+ system/core/libcorkscrew \
+
+LOCAL_SHARED_LIBRARIES := \
+ libcorkscrew \
+
+LOCAL_CPPFLAGS += \
+ $(common_cppflags) \
+
+LOCAL_LDLIBS += \
+ -ldl \
+ -lrt \
+
+else
+LOCAL_SRC_FILES += \
+ map_info.c \
+
+endif
+
include $(BUILD_HOST_SHARED_LIBRARY)
#----------------------------------------------------------------------------
+# The host test is only supported on linux.
+#----------------------------------------------------------------------------
+ifeq ($(HOST_OS),linux)
+
+#----------------------------------------------------------------------------
# libbacktrace host test library, all optimizations turned off
#----------------------------------------------------------------------------
include $(CLEAR_VARS)
@@ -263,4 +280,6 @@
include $(BUILD_HOST_NATIVE_TEST)
-endif # HOST_OS-HOST_ARCH == linux-x86
+endif # HOST_OS == linux
+
+endif # HOST_ARCH == x86
diff --git a/libbacktrace/Backtrace.cpp b/libbacktrace/Backtrace.cpp
index a7568e0..20667e0 100644
--- a/libbacktrace/Backtrace.cpp
+++ b/libbacktrace/Backtrace.cpp
@@ -87,7 +87,7 @@
if (!func_name.empty()) {
#if defined(__APPLE__)
// Mac OS' __cxa_demangle demangles "f" as "float"; last tested on 10.7.
- if (symbol_name[0] != '_') {
+ if (func_name[0] != '_') {
return func_name;
}
#endif
@@ -125,7 +125,10 @@
}
std::string Backtrace::FormatFrameData(size_t frame_num) {
- backtrace_frame_data_t* frame = &backtrace_.frames[frame_num];
+ return FormatFrameData(&backtrace_.frames[frame_num]);
+}
+
+std::string Backtrace::FormatFrameData(const backtrace_frame_data_t* frame) {
const char* map_name;
if (frame->map_name) {
map_name = frame->map_name;
@@ -142,13 +145,13 @@
char buf[512];
if (frame->func_name && frame->func_offset) {
snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR " %s (%s+%" PRIuPTR ")",
- frame_num, (int)sizeof(uintptr_t)*2, relative_pc, map_name,
+ frame->num, (int)sizeof(uintptr_t)*2, relative_pc, map_name,
frame->func_name, frame->func_offset);
} else if (frame->func_name) {
- snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR " %s (%s)", frame_num,
+ snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR " %s (%s)", frame->num,
(int)sizeof(uintptr_t)*2, relative_pc, map_name, frame->func_name);
} else {
- snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR " %s", frame_num,
+ snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR " %s", frame->num,
(int)sizeof(uintptr_t)*2, relative_pc, map_name);
}
diff --git a/libbacktrace/BacktraceThread.h b/libbacktrace/BacktraceThread.h
index bcb56c9..a4b6ecb 100644
--- a/libbacktrace/BacktraceThread.h
+++ b/libbacktrace/BacktraceThread.h
@@ -18,7 +18,6 @@
#define _LIBBACKTRACE_BACKTRACE_THREAD_H
#include <inttypes.h>
-#include <pthread.h>
#include <sys/types.h>
#include "Backtrace.h"
diff --git a/libbacktrace/Corkscrew.cpp b/libbacktrace/Corkscrew.cpp
index eae13c6..63b8c7c 100644
--- a/libbacktrace/Corkscrew.cpp
+++ b/libbacktrace/Corkscrew.cpp
@@ -45,6 +45,7 @@
data->num_frames = num_frames;
for (size_t i = 0; i < data->num_frames; i++) {
backtrace_frame_data_t* frame = &data->frames[i];
+ frame->num = i;
frame->pc = cork_frames[i].absolute_pc;
frame->sp = cork_frames[i].stack_top;
frame->stack_size = cork_frames[i].stack_size;
@@ -146,6 +147,7 @@
data->num_frames = num_frames;
for (size_t i = 0; i < data->num_frames; i++) {
backtrace_frame_data_t* frame = &data->frames[i];
+ frame->num = i;
frame->pc = frames[i].absolute_pc;
frame->sp = frames[i].stack_top;
frame->stack_size = frames[i].stack_size;
diff --git a/libbacktrace/UnwindCurrent.cpp b/libbacktrace/UnwindCurrent.cpp
index 94a82fe..6cdbc42 100644
--- a/libbacktrace/UnwindCurrent.cpp
+++ b/libbacktrace/UnwindCurrent.cpp
@@ -108,6 +108,7 @@
if (num_ignore_frames == 0) {
size_t num_frames = backtrace->num_frames;
backtrace_frame_data_t* frame = &backtrace->frames[num_frames];
+ frame->num = num_frames;
frame->pc = static_cast<uintptr_t>(pc);
frame->sp = static_cast<uintptr_t>(sp);
frame->stack_size = 0;
diff --git a/libbacktrace/UnwindPtrace.cpp b/libbacktrace/UnwindPtrace.cpp
index 7a9bbdd..6fecb76 100644
--- a/libbacktrace/UnwindPtrace.cpp
+++ b/libbacktrace/UnwindPtrace.cpp
@@ -82,6 +82,7 @@
if (num_ignore_frames == 0) {
size_t num_frames = backtrace->num_frames;
backtrace_frame_data_t* frame = &backtrace->frames[num_frames];
+ frame->num = num_frames;
frame->pc = static_cast<uintptr_t>(pc);
frame->sp = static_cast<uintptr_t>(sp);
frame->stack_size = 0;
diff --git a/libbacktrace/backtrace_test.cpp b/libbacktrace/backtrace_test.cpp
index b894446..2fed993 100644
--- a/libbacktrace/backtrace_test.cpp
+++ b/libbacktrace/backtrace_test.cpp
@@ -28,7 +28,8 @@
#include <time.h>
#include <unistd.h>
-#include <backtrace/backtrace.h>
+#include <backtrace/Backtrace.h>
+#include <UniquePtr.h>
#include <cutils/atomic.h>
#include <gtest/gtest.h>
@@ -57,7 +58,7 @@
typedef struct {
thread_t thread;
- backtrace_context_t context;
+ Backtrace* backtrace;
int32_t* now;
int32_t done;
} dump_thread_t;
@@ -75,15 +76,14 @@
return static_cast<uint64_t>(t.tv_sec * NS_PER_SEC + t.tv_nsec);
}
-void DumpFrames(const backtrace_context_t* context) {
- if (context->backtrace->num_frames == 0) {
+void DumpFrames(Backtrace* backtrace) {
+ if (backtrace->NumFrames() == 0) {
printf(" No frames to dump\n");
- } else {
- char line[512];
- for (size_t i = 0; i < context->backtrace->num_frames; i++) {
- backtrace_format_frame_data(context, i, line, sizeof(line));
- printf(" %s\n", line);
- }
+ return;
+ }
+
+ for (size_t i = 0; i < backtrace->NumFrames(); i++) {
+ printf(" %s\n", backtrace->FormatFrameData(i).c_str());
}
}
@@ -100,12 +100,12 @@
}
}
-bool ReadyLevelBacktrace(const backtrace_t* backtrace) {
+bool ReadyLevelBacktrace(Backtrace* backtrace) {
// See if test_level_four is in the backtrace.
bool found = false;
- for (size_t i = 0; i < backtrace->num_frames; i++) {
- if (backtrace->frames[i].func_name != NULL &&
- strcmp(backtrace->frames[i].func_name, "test_level_four") == 0) {
+ for (size_t i = 0; i < backtrace->NumFrames(); i++) {
+ const backtrace_frame_data_t* frame = backtrace->GetFrame(i);
+ if (frame->func_name != NULL && strcmp(frame->func_name, "test_level_four") == 0) {
found = true;
break;
}
@@ -114,64 +114,61 @@
return found;
}
-void VerifyLevelDump(const backtrace_t* backtrace) {
- ASSERT_GT(backtrace->num_frames, static_cast<size_t>(0));
- ASSERT_LT(backtrace->num_frames, static_cast<size_t>(MAX_BACKTRACE_FRAMES));
+void VerifyLevelDump(Backtrace* backtrace) {
+ ASSERT_GT(backtrace->NumFrames(), static_cast<size_t>(0));
+ ASSERT_LT(backtrace->NumFrames(), static_cast<size_t>(MAX_BACKTRACE_FRAMES));
// Look through the frames starting at the highest to find the
// frame we want.
size_t frame_num = 0;
- for (size_t i = backtrace->num_frames-1; i > 2; i--) {
- if (backtrace->frames[i].func_name != NULL &&
- strcmp(backtrace->frames[i].func_name, "test_level_one") == 0) {
+ for (size_t i = backtrace->NumFrames()-1; i > 2; i--) {
+ if (backtrace->GetFrame(i)->func_name != NULL &&
+ strcmp(backtrace->GetFrame(i)->func_name, "test_level_one") == 0) {
frame_num = i;
break;
}
}
- ASSERT_GT(frame_num, static_cast<size_t>(0));
+ ASSERT_LT(static_cast<size_t>(0), frame_num);
+ ASSERT_LE(static_cast<size_t>(3), frame_num);
- ASSERT_TRUE(NULL != backtrace->frames[frame_num].func_name);
- ASSERT_STREQ(backtrace->frames[frame_num].func_name, "test_level_one");
- ASSERT_TRUE(NULL != backtrace->frames[frame_num-1].func_name);
- ASSERT_STREQ(backtrace->frames[frame_num-1].func_name, "test_level_two");
- ASSERT_TRUE(NULL != backtrace->frames[frame_num-2].func_name);
- ASSERT_STREQ(backtrace->frames[frame_num-2].func_name, "test_level_three");
- ASSERT_TRUE(NULL != backtrace->frames[frame_num-3].func_name);
- ASSERT_STREQ(backtrace->frames[frame_num-3].func_name, "test_level_four");
+ ASSERT_TRUE(NULL != backtrace->GetFrame(frame_num)->func_name);
+ ASSERT_STREQ(backtrace->GetFrame(frame_num)->func_name, "test_level_one");
+ ASSERT_TRUE(NULL != backtrace->GetFrame(frame_num-1)->func_name);
+ ASSERT_STREQ(backtrace->GetFrame(frame_num-1)->func_name, "test_level_two");
+ ASSERT_TRUE(NULL != backtrace->GetFrame(frame_num-2)->func_name);
+ ASSERT_STREQ(backtrace->GetFrame(frame_num-2)->func_name, "test_level_three");
+ ASSERT_TRUE(NULL != backtrace->GetFrame(frame_num-3)->func_name);
+ ASSERT_STREQ(backtrace->GetFrame(frame_num-3)->func_name, "test_level_four");
}
void VerifyLevelBacktrace(void*) {
- backtrace_context_t context;
+ UniquePtr<Backtrace> backtrace(
+ Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+ ASSERT_TRUE(backtrace.get() != NULL);
+ ASSERT_TRUE(backtrace->Unwind(0));
- ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
- BACKTRACE_CURRENT_THREAD, 0));
-
- VerifyLevelDump(context.backtrace);
-
- backtrace_destroy_context(&context);
+ VerifyLevelDump(backtrace.get());
}
-bool ReadyMaxBacktrace(const backtrace_t* backtrace) {
- return (backtrace->num_frames == MAX_BACKTRACE_FRAMES);
+bool ReadyMaxBacktrace(Backtrace* backtrace) {
+ return (backtrace->NumFrames() == MAX_BACKTRACE_FRAMES);
}
-void VerifyMaxDump(const backtrace_t* backtrace) {
- ASSERT_EQ(backtrace->num_frames, static_cast<size_t>(MAX_BACKTRACE_FRAMES));
+void VerifyMaxDump(Backtrace* backtrace) {
+ ASSERT_EQ(backtrace->NumFrames(), static_cast<size_t>(MAX_BACKTRACE_FRAMES));
// Verify that the last frame is our recursive call.
- ASSERT_TRUE(NULL != backtrace->frames[MAX_BACKTRACE_FRAMES-1].func_name);
- ASSERT_STREQ(backtrace->frames[MAX_BACKTRACE_FRAMES-1].func_name,
+ ASSERT_TRUE(NULL != backtrace->GetFrame(MAX_BACKTRACE_FRAMES-1)->func_name);
+ ASSERT_STREQ(backtrace->GetFrame(MAX_BACKTRACE_FRAMES-1)->func_name,
"test_recursive_call");
}
void VerifyMaxBacktrace(void*) {
- backtrace_context_t context;
+ UniquePtr<Backtrace> backtrace(
+ Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+ ASSERT_TRUE(backtrace.get() != NULL);
+ ASSERT_TRUE(backtrace->Unwind(0));
- ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
- BACKTRACE_CURRENT_THREAD, 0));
-
- VerifyMaxDump(context.backtrace);
-
- backtrace_destroy_context(&context);
+ VerifyMaxDump(backtrace.get());
}
void ThreadSetState(void* data) {
@@ -183,14 +180,12 @@
}
}
-void VerifyThreadTest(pid_t tid, void (*VerifyFunc)(const backtrace_t*)) {
- backtrace_context_t context;
+void VerifyThreadTest(pid_t tid, void (*VerifyFunc)(Backtrace*)) {
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), tid));
+ ASSERT_TRUE(backtrace.get() != NULL);
+ ASSERT_TRUE(backtrace->Unwind(0));
- backtrace_create_context(&context, getpid(), tid, 0);
-
- VerifyFunc(context.backtrace);
-
- backtrace_destroy_context(&context);
+ VerifyFunc(backtrace.get());
}
bool WaitForNonZero(int32_t* value, uint64_t seconds) {
@@ -208,52 +203,47 @@
}
void VerifyIgnoreFrames(
- const backtrace_t* bt_all, const backtrace_t* bt_ign1,
- const backtrace_t* bt_ign2, const char* cur_proc) {
- EXPECT_EQ(bt_all->num_frames, bt_ign1->num_frames + 1);
- EXPECT_EQ(bt_all->num_frames, bt_ign2->num_frames + 2);
+ Backtrace* bt_all, Backtrace* bt_ign1,
+ Backtrace* bt_ign2, const char* cur_proc) {
+ EXPECT_EQ(bt_all->NumFrames(), bt_ign1->NumFrames() + 1);
+ EXPECT_EQ(bt_all->NumFrames(), bt_ign2->NumFrames() + 2);
// Check all of the frames are the same > the current frame.
bool check = (cur_proc == NULL);
- for (size_t i = 0; i < bt_ign2->num_frames; i++) {
+ for (size_t i = 0; i < bt_ign2->NumFrames(); i++) {
if (check) {
- EXPECT_EQ(bt_ign2->frames[i].pc, bt_ign1->frames[i+1].pc);
- EXPECT_EQ(bt_ign2->frames[i].sp, bt_ign1->frames[i+1].sp);
- EXPECT_EQ(bt_ign2->frames[i].stack_size, bt_ign1->frames[i+1].stack_size);
+ EXPECT_EQ(bt_ign2->GetFrame(i)->pc, bt_ign1->GetFrame(i+1)->pc);
+ EXPECT_EQ(bt_ign2->GetFrame(i)->sp, bt_ign1->GetFrame(i+1)->sp);
+ EXPECT_EQ(bt_ign2->GetFrame(i)->stack_size, bt_ign1->GetFrame(i+1)->stack_size);
- EXPECT_EQ(bt_ign2->frames[i].pc, bt_all->frames[i+2].pc);
- EXPECT_EQ(bt_ign2->frames[i].sp, bt_all->frames[i+2].sp);
- EXPECT_EQ(bt_ign2->frames[i].stack_size, bt_all->frames[i+2].stack_size);
+ EXPECT_EQ(bt_ign2->GetFrame(i)->pc, bt_all->GetFrame(i+2)->pc);
+ EXPECT_EQ(bt_ign2->GetFrame(i)->sp, bt_all->GetFrame(i+2)->sp);
+ EXPECT_EQ(bt_ign2->GetFrame(i)->stack_size, bt_all->GetFrame(i+2)->stack_size);
}
- if (!check && bt_ign2->frames[i].func_name &&
- strcmp(bt_ign2->frames[i].func_name, cur_proc) == 0) {
+ if (!check && bt_ign2->GetFrame(i)->func_name &&
+ strcmp(bt_ign2->GetFrame(i)->func_name, cur_proc) == 0) {
check = true;
}
}
}
void VerifyLevelIgnoreFrames(void*) {
- backtrace_context_t all;
- ASSERT_TRUE(backtrace_create_context(&all, BACKTRACE_CURRENT_PROCESS,
- BACKTRACE_CURRENT_THREAD, 0));
- ASSERT_TRUE(all.backtrace != NULL);
+ UniquePtr<Backtrace> all(
+ Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+ ASSERT_TRUE(all.get() != NULL);
+ ASSERT_TRUE(all->Unwind(0));
- backtrace_context_t ign1;
- ASSERT_TRUE(backtrace_create_context(&ign1, BACKTRACE_CURRENT_PROCESS,
- BACKTRACE_CURRENT_THREAD, 1));
- ASSERT_TRUE(ign1.backtrace != NULL);
+ UniquePtr<Backtrace> ign1(
+ Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+ ASSERT_TRUE(ign1.get() != NULL);
+ ASSERT_TRUE(ign1->Unwind(1));
- backtrace_context_t ign2;
- ASSERT_TRUE(backtrace_create_context(&ign2, BACKTRACE_CURRENT_PROCESS,
- BACKTRACE_CURRENT_THREAD, 2));
- ASSERT_TRUE(ign2.backtrace != NULL);
+ UniquePtr<Backtrace> ign2(
+ Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+ ASSERT_TRUE(ign2.get() != NULL);
+ ASSERT_TRUE(ign2->Unwind(2));
- VerifyIgnoreFrames(all.backtrace, ign1.backtrace, ign2.backtrace,
- "VerifyLevelIgnoreFrames");
-
- backtrace_destroy_context(&all);
- backtrace_destroy_context(&ign1);
- backtrace_destroy_context(&ign2);
+ VerifyIgnoreFrames(all.get(), ign1.get(), ign2.get(), "VerifyLevelIgnoreFrames");
}
TEST(libbacktrace, local_trace_ignore_frames) {
@@ -265,8 +255,8 @@
}
void VerifyProcTest(pid_t pid, pid_t tid,
- bool (*ReadyFunc)(const backtrace_t*),
- void (*VerifyFunc)(const backtrace_t*)) {
+ bool (*ReadyFunc)(Backtrace*),
+ void (*VerifyFunc)(Backtrace*)) {
pid_t ptrace_tid;
if (tid < 0) {
ptrace_tid = pid;
@@ -281,13 +271,14 @@
// Wait for the process to get to a stopping point.
WaitForStop(ptrace_tid);
- backtrace_context_t context;
- ASSERT_TRUE(backtrace_create_context(&context, pid, tid, 0));
- if (ReadyFunc(context.backtrace)) {
- VerifyFunc(context.backtrace);
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(pid, tid));
+ ASSERT_TRUE(backtrace->Unwind(0));
+ ASSERT_TRUE(backtrace.get() != NULL);
+ if (ReadyFunc(backtrace.get())) {
+ VerifyFunc(backtrace.get());
verified = true;
}
- backtrace_destroy_context(&context);
+
ASSERT_TRUE(ptrace(PTRACE_DETACH, ptrace_tid, 0, 0) == 0);
}
// If 5 seconds have passed, then we are done.
@@ -321,21 +312,16 @@
ASSERT_EQ(waitpid(pid, &status, 0), pid);
}
-void VerifyProcessIgnoreFrames(const backtrace_t* bt_all) {
- pid_t pid = bt_all->pid;
+void VerifyProcessIgnoreFrames(Backtrace* bt_all) {
+ UniquePtr<Backtrace> ign1(Backtrace::Create(bt_all->Pid(), BACKTRACE_CURRENT_THREAD));
+ ASSERT_TRUE(ign1.get() != NULL);
+ ASSERT_TRUE(ign1->Unwind(1));
- backtrace_context_t ign1;
- ASSERT_TRUE(backtrace_create_context(&ign1, pid, BACKTRACE_CURRENT_THREAD, 1));
- ASSERT_TRUE(ign1.backtrace != NULL);
+ UniquePtr<Backtrace> ign2(Backtrace::Create(bt_all->Pid(), BACKTRACE_CURRENT_THREAD));
+ ASSERT_TRUE(ign2.get() != NULL);
+ ASSERT_TRUE(ign2->Unwind(2));
- backtrace_context_t ign2;
- ASSERT_TRUE(backtrace_create_context(&ign2, pid, BACKTRACE_CURRENT_THREAD, 2));
- ASSERT_TRUE(ign2.backtrace != NULL);
-
- VerifyIgnoreFrames(bt_all, ign1.backtrace, ign2.backtrace, NULL);
-
- backtrace_destroy_context(&ign1);
- backtrace_destroy_context(&ign2);
+ VerifyIgnoreFrames(bt_all, ign1.get(), ign2.get(), NULL);
}
TEST(libbacktrace, ptrace_ignore_frames) {
@@ -418,13 +404,11 @@
}
void VerifyLevelThread(void*) {
- backtrace_context_t context;
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), gettid()));
+ ASSERT_TRUE(backtrace.get() != NULL);
+ ASSERT_TRUE(backtrace->Unwind(0));
- ASSERT_TRUE(backtrace_create_context(&context, getpid(), gettid(), 0));
-
- VerifyLevelDump(context.backtrace);
-
- backtrace_destroy_context(&context);
+ VerifyLevelDump(backtrace.get());
}
TEST(libbacktrace, thread_current_level) {
@@ -432,13 +416,11 @@
}
void VerifyMaxThread(void*) {
- backtrace_context_t context;
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), gettid()));
+ ASSERT_TRUE(backtrace.get() != NULL);
+ ASSERT_TRUE(backtrace->Unwind(0));
- ASSERT_TRUE(backtrace_create_context(&context, getpid(), gettid(), 0));
-
- VerifyMaxDump(context.backtrace);
-
- backtrace_destroy_context(&context);
+ VerifyMaxDump(backtrace.get());
}
TEST(libbacktrace, thread_current_max) {
@@ -469,13 +451,11 @@
struct sigaction cur_action;
ASSERT_TRUE(sigaction(SIGURG, NULL, &cur_action) == 0);
- backtrace_context_t context;
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), thread_data.tid));
+ ASSERT_TRUE(backtrace.get() != NULL);
+ ASSERT_TRUE(backtrace->Unwind(0));
- ASSERT_TRUE(backtrace_create_context(&context, getpid(), thread_data.tid,0));
-
- VerifyLevelDump(context.backtrace);
-
- backtrace_destroy_context(&context);
+ VerifyLevelDump(backtrace.get());
// Tell the thread to exit its infinite loop.
android_atomic_acquire_store(0, &thread_data.state);
@@ -499,20 +479,19 @@
// Wait up to 2 seconds for the tid to be set.
ASSERT_TRUE(WaitForNonZero(&thread_data.state, 2));
- backtrace_context_t all;
- ASSERT_TRUE(backtrace_create_context(&all, getpid(), thread_data.tid, 0));
+ UniquePtr<Backtrace> all(Backtrace::Create(getpid(), thread_data.tid));
+ ASSERT_TRUE(all.get() != NULL);
+ ASSERT_TRUE(all->Unwind(0));
- backtrace_context_t ign1;
- ASSERT_TRUE(backtrace_create_context(&ign1, getpid(), thread_data.tid, 1));
+ UniquePtr<Backtrace> ign1(Backtrace::Create(getpid(), thread_data.tid));
+ ASSERT_TRUE(ign1.get() != NULL);
+ ASSERT_TRUE(ign1->Unwind(1));
- backtrace_context_t ign2;
- ASSERT_TRUE(backtrace_create_context(&ign2, getpid(), thread_data.tid, 2));
+ UniquePtr<Backtrace> ign2(Backtrace::Create(getpid(), thread_data.tid));
+ ASSERT_TRUE(ign2.get() != NULL);
+ ASSERT_TRUE(ign2->Unwind(2));
- VerifyIgnoreFrames(all.backtrace, ign1.backtrace, ign2.backtrace, NULL);
-
- backtrace_destroy_context(&all);
- backtrace_destroy_context(&ign1);
- backtrace_destroy_context(&ign2);
+ VerifyIgnoreFrames(all.get(), ign1.get(), ign2.get(), NULL);
// Tell the thread to exit its infinite loop.
android_atomic_acquire_store(0, &thread_data.state);
@@ -538,13 +517,11 @@
// Wait for the tid to be set.
ASSERT_TRUE(WaitForNonZero(&thread_data.state, 2));
- backtrace_context_t context;
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), thread_data.tid));
+ ASSERT_TRUE(backtrace.get() != NULL);
+ ASSERT_TRUE(backtrace->Unwind(0));
- ASSERT_TRUE(backtrace_create_context(&context, getpid(), thread_data.tid, 0));
-
- VerifyMaxDump(context.backtrace);
-
- backtrace_destroy_context(&context);
+ VerifyMaxDump(backtrace.get());
// Tell the thread to exit its infinite loop.
android_atomic_acquire_store(0, &thread_data.state);
@@ -558,11 +535,9 @@
}
}
- dump->context.data = NULL;
- dump->context.backtrace = NULL;
-
// The status of the actual unwind will be checked elsewhere.
- backtrace_create_context(&dump->context, getpid(), dump->thread.tid, 0);
+ dump->backtrace = Backtrace::Create(getpid(), dump->thread.tid);
+ dump->backtrace->Unwind(0);
android_atomic_acquire_store(1, &dump->done);
@@ -610,58 +585,51 @@
// Tell the runner thread to exit its infinite loop.
android_atomic_acquire_store(0, &runners[i].state);
- ASSERT_TRUE(dumpers[i].context.backtrace != NULL);
- VerifyMaxDump(dumpers[i].context.backtrace);
- backtrace_destroy_context(&dumpers[i].context);
+ ASSERT_TRUE(dumpers[i].backtrace != NULL);
+ VerifyMaxDump(dumpers[i].backtrace);
+
+ delete dumpers[i].backtrace;
+ dumpers[i].backtrace = NULL;
}
}
TEST(libbacktrace, format_test) {
- backtrace_context_t context;
+ UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), BACKTRACE_CURRENT_THREAD));
+ ASSERT_TRUE(backtrace.get() != NULL);
- ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
- BACKTRACE_CURRENT_THREAD, 0));
- ASSERT_TRUE(context.backtrace != NULL);
+ backtrace_frame_data_t frame;
+ memset(&frame, 0, sizeof(backtrace_frame_data_t));
- backtrace_frame_data_t* frame =
- const_cast<backtrace_frame_data_t*>(&context.backtrace->frames[1]);
- backtrace_frame_data_t save_frame = *frame;
-
- memset(frame, 0, sizeof(backtrace_frame_data_t));
- char buf[512];
- backtrace_format_frame_data(&context, 1, buf, sizeof(buf));
+ frame.num = 1;
#if defined(__LP64__)
- EXPECT_STREQ(buf, "#01 pc 0000000000000000 <unknown>");
+ EXPECT_STREQ("#01 pc 0000000000000000 <unknown>",
#else
- EXPECT_STREQ(buf, "#01 pc 00000000 <unknown>");
+ EXPECT_STREQ("#01 pc 00000000 <unknown>",
#endif
+ backtrace->FormatFrameData(&frame).c_str());
- frame->pc = 0x12345678;
- frame->map_name = "MapFake";
- backtrace_format_frame_data(&context, 1, buf, sizeof(buf));
+ frame.pc = 0x12345678;
+ frame.map_name = "MapFake";
#if defined(__LP64__)
- EXPECT_STREQ(buf, "#01 pc 0000000012345678 MapFake");
+ EXPECT_STREQ("#01 pc 0000000012345678 MapFake",
#else
- EXPECT_STREQ(buf, "#01 pc 12345678 MapFake");
+ EXPECT_STREQ("#01 pc 12345678 MapFake",
#endif
+ backtrace->FormatFrameData(&frame).c_str());
- frame->func_name = const_cast<char*>("ProcFake");
- backtrace_format_frame_data(&context, 1, buf, sizeof(buf));
+ frame.func_name = const_cast<char*>("ProcFake");
#if defined(__LP64__)
- EXPECT_STREQ(buf, "#01 pc 0000000012345678 MapFake (ProcFake)");
+ EXPECT_STREQ("#01 pc 0000000012345678 MapFake (ProcFake)",
#else
- EXPECT_STREQ(buf, "#01 pc 12345678 MapFake (ProcFake)");
+ EXPECT_STREQ("#01 pc 12345678 MapFake (ProcFake)",
#endif
+ backtrace->FormatFrameData(&frame).c_str());
- frame->func_offset = 645;
- backtrace_format_frame_data(&context, 1, buf, sizeof(buf));
+ frame.func_offset = 645;
#if defined(__LP64__)
- EXPECT_STREQ(buf, "#01 pc 0000000012345678 MapFake (ProcFake+645)");
+ EXPECT_STREQ("#01 pc 0000000012345678 MapFake (ProcFake+645)",
#else
- EXPECT_STREQ(buf, "#01 pc 12345678 MapFake (ProcFake+645)");
+ EXPECT_STREQ("#01 pc 12345678 MapFake (ProcFake+645)",
#endif
-
- *frame = save_frame;
-
- backtrace_destroy_context(&context);
+ backtrace->FormatFrameData(&frame).c_str());
}