auto import from //depot/cupcake/@135843
diff --git a/toolbox/getevent.c b/toolbox/getevent.c
new file mode 100644
index 0000000..14372cb
--- /dev/null
+++ b/toolbox/getevent.c
@@ -0,0 +1,427 @@
+#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> // this does not compile
+#include <errno.h>
+
+static struct pollfd *ufds;
+static char **device_names;
+static int nfds;
+
+enum {
+ PRINT_DEVICE_ERRORS = 1U << 0,
+ PRINT_DEVICE = 1U << 1,
+ PRINT_DEVICE_NAME = 1U << 2,
+ PRINT_DEVICE_INFO = 1U << 3,
+ PRINT_VERSION = 1U << 4,
+ PRINT_POSSIBLE_EVENTS = 1U << 5,
+};
+
+static int print_possible_events(int fd)
+{
+ uint8_t *bits = NULL;
+ ssize_t bits_size = 0;
+ int i, j, k;
+ int res, res2;
+
+ printf(" events:\n");
+ for(i = 0; i <= EV_MAX; i++) {
+ int count = 0;
+ while(1) {
+ res = ioctl(fd, EVIOCGBIT(i, bits_size), bits);
+ if(res < bits_size)
+ break;
+ bits_size = res + 16;
+ bits = realloc(bits, bits_size * 2);
+ if(bits == NULL) {
+ fprintf(stderr, "failed to allocate buffer of size %d\n", bits_size);
+ return 1;
+ }
+ }
+ switch(i) {
+ case EV_KEY:
+ res2 = ioctl(fd, EVIOCGKEY(res), bits + bits_size);
+ break;
+ case EV_LED:
+ res2 = ioctl(fd, EVIOCGLED(res), bits + bits_size);
+ break;
+ case EV_SND:
+ res2 = ioctl(fd, EVIOCGSND(res), bits + bits_size);
+ break;
+ case EV_SW:
+ res2 = ioctl(fd, EVIOCGSW(bits_size), bits + bits_size);
+ break;
+ default:
+ res2 = 0;
+ }
+ for(j = 0; j < res; j++) {
+ for(k = 0; k < 8; k++)
+ if(bits[j] & 1 << k) {
+ char down;
+ if(j < res2 && (bits[j + bits_size] & 1 << k))
+ down = '*';
+ else
+ down = ' ';
+ if(count == 0)
+ printf(" type %04x:", i);
+ else if((count & 0x7) == 0 || i == EV_ABS)
+ printf("\n ");
+ printf(" %04x%c", j * 8 + k, down);
+ if(i == EV_ABS) {
+ struct input_absinfo abs;
+ if(ioctl(fd, EVIOCGABS(j * 8 + k), &abs) == 0) {
+ printf(" value %d, min %d, max %d, fuzz %d flat %d", abs.value, abs.minimum, abs.maximum, abs.fuzz, abs.flat);
+ }
+ }
+ count++;
+ }
+ }
+ if(count)
+ printf("\n");
+ }
+ free(bits);
+ return 0;
+}
+
+static int open_device(const char *device, int print_flags)
+{
+ 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) {
+ if(print_flags & PRINT_DEVICE_ERRORS)
+ fprintf(stderr, "could not open %s, %s\n", device, strerror(errno));
+ return -1;
+ }
+
+ if(ioctl(fd, EVIOCGVERSION, &version)) {
+ if(print_flags & PRINT_DEVICE_ERRORS)
+ fprintf(stderr, "could not get driver version for %s, %s\n", device, strerror(errno));
+ return -1;
+ }
+ if(ioctl(fd, EVIOCGID, &id)) {
+ if(print_flags & PRINT_DEVICE_ERRORS)
+ fprintf(stderr, "could not get driver id for %s, %s\n", device, strerror(errno));
+ 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;
+
+ if(print_flags & PRINT_DEVICE)
+ printf("add device %d: %s\n", nfds, device);
+ if(print_flags & PRINT_DEVICE_INFO)
+ printf(" bus: %04x\n"
+ " vendor %04x\n"
+ " product %04x\n"
+ " version %04x\n",
+ id.bustype, id.vendor, id.product, id.version);
+ if(print_flags & PRINT_DEVICE_NAME)
+ printf(" name: \"%s\"\n", name);
+ if(print_flags & PRINT_DEVICE_INFO)
+ printf(" location: \"%s\"\n"
+ " id: \"%s\"\n", location, idstr);
+ if(print_flags & PRINT_VERSION)
+ printf(" version: %d.%d.%d\n",
+ version >> 16, (version >> 8) & 0xff, version & 0xff);
+
+ if(print_flags & PRINT_POSSIBLE_EVENTS) {
+ print_possible_events(fd);
+ }
+
+ ufds[nfds].fd = fd;
+ ufds[nfds].events = POLLIN;
+ device_names[nfds] = strdup(device);
+ nfds++;
+
+ return 0;
+}
+
+int close_device(const char *device, int print_flags)
+{
+ int i;
+ for(i = 1; i < nfds; i++) {
+ if(strcmp(device_names[i], device) == 0) {
+ int count = nfds - i - 1;
+ if(print_flags & PRINT_DEVICE)
+ printf("remove device %d: %s\n", i, device);
+ 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;
+ }
+ }
+ if(print_flags & PRINT_DEVICE_ERRORS)
+ fprintf(stderr, "remote device: %s not found\n", device);
+ return -1;
+}
+
+static int read_notify(const char *dirname, int nfd, int print_flags)
+{
+ 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, print_flags);
+ }
+ else {
+ close_device(devname, print_flags);
+ }
+ }
+ event_size = sizeof(*event) + event->len;
+ res -= event_size;
+ event_pos += event_size;
+ }
+ return 0;
+}
+
+static int scan_dir(const char *dirname, int print_flags)
+{
+ 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, print_flags);
+ }
+ closedir(dir);
+ return 0;
+}
+
+static void usage(int argc, char *argv[])
+{
+ fprintf(stderr, "Usage: %s [-t] [-n] [-s switchmask] [-S] [-v [mask]] [-q] [-c count] [-r] [device]\n", argv[0]);
+}
+
+int getevent_main(int argc, char *argv[])
+{
+ int c;
+ int i;
+ int res;
+ int pollres;
+ int get_time = 0;
+ int print_device = 0;
+ char *newline = "\n";
+ uint16_t get_switch = 0;
+ struct input_event event;
+ int version;
+ int print_flags = PRINT_DEVICE_ERRORS | PRINT_DEVICE | PRINT_DEVICE_NAME;
+ int print_flags_set = 0;
+ int dont_block = -1;
+ int event_count = 0;
+ int sync_rate = 0;
+ int64_t last_sync_time = 0;
+ const char *device = NULL;
+ const char *device_path = "/dev/input";
+
+ opterr = 0;
+ do {
+ c = getopt(argc, argv, "tns:Sv::qc:rh");
+ if (c == EOF)
+ break;
+ switch (c) {
+ case 't':
+ get_time = 1;
+ break;
+ case 'n':
+ newline = "";
+ break;
+ case 's':
+ get_switch = strtoul(optarg, NULL, 0);
+ if(dont_block == -1)
+ dont_block = 1;
+ break;
+ case 'S':
+ get_switch = ~0;
+ if(dont_block == -1)
+ dont_block = 1;
+ break;
+ case 'v':
+ if(optarg)
+ print_flags = strtoul(optarg, NULL, 0);
+ else
+ print_flags |= PRINT_DEVICE | PRINT_DEVICE_NAME | PRINT_DEVICE_INFO | PRINT_VERSION;
+ print_flags_set = 1;
+ break;
+ case 'q':
+ print_flags = 0;
+ print_flags_set = 1;
+ break;
+ case 'c':
+ event_count = atoi(optarg);
+ dont_block = 0;
+ break;
+ case 'r':
+ sync_rate = 1;
+ break;
+ case '?':
+ fprintf(stderr, "%s: invalid option -%c\n",
+ argv[0], optopt);
+ case 'h':
+ usage(argc, argv);
+ exit(1);
+ }
+ } while (1);
+ if(dont_block == -1)
+ dont_block = 0;
+
+ if (optind + 1 == argc) {
+ device = argv[optind];
+ optind++;
+ }
+ if (optind != argc) {
+ usage(argc, argv);
+ exit(1);
+ }
+ nfds = 1;
+ ufds = calloc(1, sizeof(ufds[0]));
+ ufds[0].fd = inotify_init();
+ ufds[0].events = POLLIN;
+ if(device) {
+ if(!print_flags_set)
+ print_flags = PRINT_DEVICE_ERRORS;
+ res = open_device(device, print_flags);
+ if(res < 0) {
+ return 1;
+ }
+ }
+ else {
+ print_device = 1;
+ res = inotify_add_watch(ufds[0].fd, device_path, IN_DELETE | IN_CREATE);
+ if(res < 0) {
+ fprintf(stderr, "could not add watch for %s, %s\n", device_path, strerror(errno));
+ return 1;
+ }
+ res = scan_dir(device_path, print_flags);
+ if(res < 0) {
+ fprintf(stderr, "scan dir failed for %s\n", device_path);
+ return 1;
+ }
+ }
+
+ if(get_switch) {
+ for(i = 1; i < nfds; i++) {
+ uint16_t sw;
+ res = ioctl(ufds[i].fd, EVIOCGSW(1), &sw);
+ if(res < 0) {
+ fprintf(stderr, "could not get switch state, %s\n", strerror(errno));
+ return 1;
+ }
+ sw &= get_switch;
+ printf("%04x%s", sw, newline);
+ }
+ }
+
+ if(dont_block)
+ return 0;
+
+ while(1) {
+ pollres = poll(ufds, nfds, -1);
+ //printf("poll %d, returned %d\n", nfds, pollres);
+ if(ufds[0].revents & POLLIN) {
+ read_notify(device_path, ufds[0].fd, print_flags);
+ }
+ 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;
+ }
+ if(get_time) {
+ printf("%ld-%ld: ", event.time.tv_sec, event.time.tv_usec);
+ }
+ if(print_device)
+ printf("%s: ", device_names[i]);
+ printf("%04x %04x %08x", event.type, event.code, event.value);
+ if(sync_rate && event.type == 0 && event.code == 0) {
+ int64_t now = event.time.tv_sec * 1000000LL + event.time.tv_usec;
+ if(last_sync_time)
+ printf(" rate %lld", 1000000LL / (now - last_sync_time));
+ last_sync_time = now;
+ }
+ printf("%s", newline);
+ if(event_count && --event_count == 0)
+ return 0;
+ }
+ }
+ }
+ }
+
+ return 0;
+}