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-rw-r--r--cmds/dumpstate/utils.cpp783
1 files changed, 783 insertions, 0 deletions
diff --git a/cmds/dumpstate/utils.cpp b/cmds/dumpstate/utils.cpp
new file mode 100644
index 0000000000..12f44aeba0
--- /dev/null
+++ b/cmds/dumpstate/utils.cpp
@@ -0,0 +1,783 @@
+/*
+ * Copyright (C) 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 <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <poll.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/inotify.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/klog.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/prctl.h>
+
+#include <cutils/debugger.h>
+#include <cutils/properties.h>
+#include <cutils/sockets.h>
+#include <private/android_filesystem_config.h>
+
+#include <selinux/android.h>
+
+#include "dumpstate.h"
+
+static const int64_t NANOS_PER_SEC = 1000000000;
+
+/* list of native processes to include in the native dumps */
+static const char* native_processes_to_dump[] = {
+ "/system/bin/drmserver",
+ "/system/bin/mediaserver",
+ "/system/bin/sdcard",
+ "/system/bin/surfaceflinger",
+ NULL,
+};
+
+static uint64_t nanotime() {
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ return (uint64_t)ts.tv_sec * NANOS_PER_SEC + ts.tv_nsec;
+}
+
+void for_each_userid(void (*func)(int), const char *header) {
+ DIR *d;
+ struct dirent *de;
+
+ if (header) printf("\n------ %s ------\n", header);
+ func(0);
+
+ if (!(d = opendir("/data/system/users"))) {
+ printf("Failed to open /data/system/users (%s)\n", strerror(errno));
+ return;
+ }
+
+ while ((de = readdir(d))) {
+ int userid;
+ if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) {
+ continue;
+ }
+ func(userid);
+ }
+
+ closedir(d);
+}
+
+static void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) {
+ DIR *d;
+ struct dirent *de;
+
+ if (!(d = opendir("/proc"))) {
+ printf("Failed to open /proc (%s)\n", strerror(errno));
+ return;
+ }
+
+ printf("\n------ %s ------\n", header);
+ while ((de = readdir(d))) {
+ int pid;
+ int fd;
+ char cmdpath[255];
+ char cmdline[255];
+
+ if (!(pid = atoi(de->d_name))) {
+ continue;
+ }
+
+ sprintf(cmdpath,"/proc/%d/cmdline", pid);
+ memset(cmdline, 0, sizeof(cmdline));
+ if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) < 0) {
+ strcpy(cmdline, "N/A");
+ } else {
+ read(fd, cmdline, sizeof(cmdline) - 1);
+ close(fd);
+ }
+ helper(pid, cmdline, arg);
+ }
+
+ closedir(d);
+}
+
+static void for_each_pid_helper(int pid, const char *cmdline, void *arg) {
+ for_each_pid_func *func = (for_each_pid_func*) arg;
+ func(pid, cmdline);
+}
+
+void for_each_pid(for_each_pid_func func, const char *header) {
+ __for_each_pid(for_each_pid_helper, header, (void *)func);
+}
+
+static void for_each_tid_helper(int pid, const char *cmdline, void *arg) {
+ DIR *d;
+ struct dirent *de;
+ char taskpath[255];
+ for_each_tid_func *func = (for_each_tid_func *) arg;
+
+ sprintf(taskpath, "/proc/%d/task", pid);
+
+ if (!(d = opendir(taskpath))) {
+ printf("Failed to open %s (%s)\n", taskpath, strerror(errno));
+ return;
+ }
+
+ func(pid, pid, cmdline);
+
+ while ((de = readdir(d))) {
+ int tid;
+ int fd;
+ char commpath[255];
+ char comm[255];
+
+ if (!(tid = atoi(de->d_name))) {
+ continue;
+ }
+
+ if (tid == pid)
+ continue;
+
+ sprintf(commpath,"/proc/%d/comm", tid);
+ memset(comm, 0, sizeof(comm));
+ if ((fd = TEMP_FAILURE_RETRY(open(commpath, O_RDONLY | O_CLOEXEC))) < 0) {
+ strcpy(comm, "N/A");
+ } else {
+ char *c;
+ read(fd, comm, sizeof(comm) - 1);
+ close(fd);
+
+ c = strrchr(comm, '\n');
+ if (c) {
+ *c = '\0';
+ }
+ }
+ func(pid, tid, comm);
+ }
+
+ closedir(d);
+}
+
+void for_each_tid(for_each_tid_func func, const char *header) {
+ __for_each_pid(for_each_tid_helper, header, (void *) func);
+}
+
+void show_wchan(int pid, int tid, const char *name) {
+ char path[255];
+ char buffer[255];
+ int fd;
+ char name_buffer[255];
+
+ memset(buffer, 0, sizeof(buffer));
+
+ sprintf(path, "/proc/%d/wchan", tid);
+ if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) {
+ printf("Failed to open '%s' (%s)\n", path, strerror(errno));
+ return;
+ }
+
+ if (read(fd, buffer, sizeof(buffer)) < 0) {
+ printf("Failed to read '%s' (%s)\n", path, strerror(errno));
+ goto out_close;
+ }
+
+ snprintf(name_buffer, sizeof(name_buffer), "%*s%s",
+ pid == tid ? 0 : 3, "", name);
+
+ printf("%-7d %-32s %s\n", tid, name_buffer, buffer);
+
+out_close:
+ close(fd);
+ return;
+}
+
+void do_dmesg() {
+ printf("------ KERNEL LOG (dmesg) ------\n");
+ /* Get size of kernel buffer */
+ int size = klogctl(KLOG_SIZE_BUFFER, NULL, 0);
+ if (size <= 0) {
+ printf("Unexpected klogctl return value: %d\n\n", size);
+ return;
+ }
+ char *buf = (char *) malloc(size + 1);
+ if (buf == NULL) {
+ printf("memory allocation failed\n\n");
+ return;
+ }
+ int retval = klogctl(KLOG_READ_ALL, buf, size);
+ if (retval < 0) {
+ printf("klogctl failure\n\n");
+ free(buf);
+ return;
+ }
+ buf[retval] = '\0';
+ printf("%s\n\n", buf);
+ free(buf);
+ return;
+}
+
+void do_showmap(int pid, const char *name) {
+ char title[255];
+ char arg[255];
+
+ sprintf(title, "SHOW MAP %d (%s)", pid, name);
+ sprintf(arg, "%d", pid);
+ run_command(title, 10, SU_PATH, "root", "showmap", arg, NULL);
+}
+
+static int _dump_file_from_fd(const char *title, const char *path, int fd) {
+ if (title) printf("------ %s (%s", title, path);
+
+ if (title) {
+ struct stat st;
+ if (memcmp(path, "/proc/", 6) && memcmp(path, "/sys/", 5) && !fstat(fd, &st)) {
+ char stamp[80];
+ time_t mtime = st.st_mtime;
+ strftime(stamp, sizeof(stamp), "%Y-%m-%d %H:%M:%S", localtime(&mtime));
+ printf(": %s", stamp);
+ }
+ printf(") ------\n");
+ }
+
+ bool newline = false;
+ fd_set read_set;
+ struct timeval tm;
+ while (1) {
+ FD_ZERO(&read_set);
+ FD_SET(fd, &read_set);
+ /* Timeout if no data is read for 30 seconds. */
+ tm.tv_sec = 30;
+ tm.tv_usec = 0;
+ uint64_t elapsed = nanotime();
+ int ret = TEMP_FAILURE_RETRY(select(fd + 1, &read_set, NULL, NULL, &tm));
+ if (ret == -1) {
+ printf("*** %s: select failed: %s\n", path, strerror(errno));
+ newline = true;
+ break;
+ } else if (ret == 0) {
+ elapsed = nanotime() - elapsed;
+ printf("*** %s: Timed out after %.3fs\n", path,
+ (float) elapsed / NANOS_PER_SEC);
+ newline = true;
+ break;
+ } else {
+ char buffer[65536];
+ ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer)));
+ if (bytes_read > 0) {
+ fwrite(buffer, bytes_read, 1, stdout);
+ newline = (buffer[bytes_read-1] == '\n');
+ } else {
+ if (bytes_read == -1) {
+ printf("*** %s: Failed to read from fd: %s", path, strerror(errno));
+ newline = true;
+ }
+ break;
+ }
+ }
+ }
+ close(fd);
+
+ if (!newline) printf("\n");
+ if (title) printf("\n");
+ return 0;
+}
+
+/* prints the contents of a file */
+int dump_file(const char *title, const char *path) {
+ int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC));
+ if (fd < 0) {
+ int err = errno;
+ if (title) printf("------ %s (%s) ------\n", title, path);
+ printf("*** %s: %s\n", path, strerror(err));
+ if (title) printf("\n");
+ return -1;
+ }
+ return _dump_file_from_fd(title, path, fd);
+}
+
+/* calls skip to gate calling dump_from_fd recursively
+ * in the specified directory. dump_from_fd defaults to
+ * dump_file_from_fd above when set to NULL. skip defaults
+ * to false when set to NULL. dump_from_fd will always be
+ * called with title NULL.
+ */
+int dump_files(const char *title, const char *dir,
+ bool (*skip)(const char *path),
+ int (*dump_from_fd)(const char *title, const char *path, int fd)) {
+ DIR *dirp;
+ struct dirent *d;
+ char *newpath = NULL;
+ const char *slash = "/";
+ int fd, retval = 0;
+
+ if (title) {
+ printf("------ %s (%s) ------\n", title, dir);
+ }
+
+ if (dir[strlen(dir) - 1] == '/') {
+ ++slash;
+ }
+ dirp = opendir(dir);
+ if (dirp == NULL) {
+ retval = -errno;
+ fprintf(stderr, "%s: %s\n", dir, strerror(errno));
+ return retval;
+ }
+
+ if (!dump_from_fd) {
+ dump_from_fd = dump_file_from_fd;
+ }
+ for (; ((d = readdir(dirp))); free(newpath), newpath = NULL) {
+ if ((d->d_name[0] == '.')
+ && (((d->d_name[1] == '.') && (d->d_name[2] == '\0'))
+ || (d->d_name[1] == '\0'))) {
+ continue;
+ }
+ asprintf(&newpath, "%s%s%s%s", dir, slash, d->d_name,
+ (d->d_type == DT_DIR) ? "/" : "");
+ if (!newpath) {
+ retval = -errno;
+ continue;
+ }
+ if (skip && (*skip)(newpath)) {
+ continue;
+ }
+ if (d->d_type == DT_DIR) {
+ int ret = dump_files(NULL, newpath, skip, dump_from_fd);
+ if (ret < 0) {
+ retval = ret;
+ }
+ continue;
+ }
+ fd = TEMP_FAILURE_RETRY(open(newpath, O_RDONLY | O_NONBLOCK | O_CLOEXEC));
+ if (fd < 0) {
+ retval = fd;
+ printf("*** %s: %s\n", newpath, strerror(errno));
+ continue;
+ }
+ (*dump_from_fd)(NULL, newpath, fd);
+ }
+ closedir(dirp);
+ if (title) {
+ printf("\n");
+ }
+ return retval;
+}
+
+/* fd must have been opened with the flag O_NONBLOCK. With this flag set,
+ * it's possible to avoid issues where opening the file itself can get
+ * stuck.
+ */
+int dump_file_from_fd(const char *title, const char *path, int fd) {
+ int flags = fcntl(fd, F_GETFL);
+ if (flags == -1) {
+ printf("*** %s: failed to get flags on fd %d: %s\n", path, fd, strerror(errno));
+ return -1;
+ } else if (!(flags & O_NONBLOCK)) {
+ printf("*** %s: fd must have O_NONBLOCK set.\n", path);
+ return -1;
+ }
+ return _dump_file_from_fd(title, path, fd);
+}
+
+bool waitpid_with_timeout(pid_t pid, int timeout_seconds, int* status) {
+ sigset_t child_mask, old_mask;
+ sigemptyset(&child_mask);
+ sigaddset(&child_mask, SIGCHLD);
+
+ if (sigprocmask(SIG_BLOCK, &child_mask, &old_mask) == -1) {
+ printf("*** sigprocmask failed: %s\n", strerror(errno));
+ return false;
+ }
+
+ struct timespec ts;
+ ts.tv_sec = timeout_seconds;
+ ts.tv_nsec = 0;
+ int ret = TEMP_FAILURE_RETRY(sigtimedwait(&child_mask, NULL, &ts));
+ int saved_errno = errno;
+ // Set the signals back the way they were.
+ if (sigprocmask(SIG_SETMASK, &old_mask, NULL) == -1) {
+ printf("*** sigprocmask failed: %s\n", strerror(errno));
+ if (ret == 0) {
+ return false;
+ }
+ }
+ if (ret == -1) {
+ errno = saved_errno;
+ if (errno == EAGAIN) {
+ errno = ETIMEDOUT;
+ } else {
+ printf("*** sigtimedwait failed: %s\n", strerror(errno));
+ }
+ return false;
+ }
+
+ pid_t child_pid = waitpid(pid, status, WNOHANG);
+ if (child_pid != pid) {
+ if (child_pid != -1) {
+ printf("*** Waiting for pid %d, got pid %d instead\n", pid, child_pid);
+ } else {
+ printf("*** waitpid failed: %s\n", strerror(errno));
+ }
+ return false;
+ }
+ return true;
+}
+
+/* forks a command and waits for it to finish */
+int run_command(const char *title, int timeout_seconds, const char *command, ...) {
+ fflush(stdout);
+ uint64_t start = nanotime();
+ pid_t pid = fork();
+
+ /* handle error case */
+ if (pid < 0) {
+ printf("*** fork: %s\n", strerror(errno));
+ return pid;
+ }
+
+ /* handle child case */
+ if (pid == 0) {
+ const char *args[1024] = {command};
+ size_t arg;
+
+ /* make sure the child dies when dumpstate dies */
+ prctl(PR_SET_PDEATHSIG, SIGKILL);
+
+ /* just ignore SIGPIPE, will go down with parent's */
+ struct sigaction sigact;
+ memset(&sigact, 0, sizeof(sigact));
+ sigact.sa_handler = SIG_IGN;
+ sigaction(SIGPIPE, &sigact, NULL);
+
+ va_list ap;
+ va_start(ap, command);
+ if (title) printf("------ %s (%s", title, command);
+ for (arg = 1; arg < sizeof(args) / sizeof(args[0]); ++arg) {
+ args[arg] = va_arg(ap, const char *);
+ if (args[arg] == NULL) break;
+ if (title) printf(" %s", args[arg]);
+ }
+ if (title) printf(") ------\n");
+ fflush(stdout);
+
+ execvp(command, (char**) args);
+ printf("*** exec(%s): %s\n", command, strerror(errno));
+ fflush(stdout);
+ _exit(-1);
+ }
+
+ /* handle parent case */
+ int status;
+ bool ret = waitpid_with_timeout(pid, timeout_seconds, &status);
+ uint64_t elapsed = nanotime() - start;
+ if (!ret) {
+ if (errno == ETIMEDOUT) {
+ printf("*** %s: Timed out after %.3fs (killing pid %d)\n", command,
+ (float) elapsed / NANOS_PER_SEC, pid);
+ } else {
+ printf("*** %s: Error after %.4fs (killing pid %d)\n", command,
+ (float) elapsed / NANOS_PER_SEC, pid);
+ }
+ kill(pid, SIGTERM);
+ if (!waitpid_with_timeout(pid, 5, NULL)) {
+ kill(pid, SIGKILL);
+ if (!waitpid_with_timeout(pid, 5, NULL)) {
+ printf("*** %s: Cannot kill %d even with SIGKILL.\n", command, pid);
+ }
+ }
+ return -1;
+ }
+
+ if (WIFSIGNALED(status)) {
+ printf("*** %s: Killed by signal %d\n", command, WTERMSIG(status));
+ } else if (WIFEXITED(status) && WEXITSTATUS(status) > 0) {
+ printf("*** %s: Exit code %d\n", command, WEXITSTATUS(status));
+ }
+ if (title) printf("[%s: %.3fs elapsed]\n\n", command, (float)elapsed / NANOS_PER_SEC);
+
+ return status;
+}
+
+size_t num_props = 0;
+static char* props[2000];
+
+static void print_prop(const char *key, const char *name, void *user) {
+ (void) user;
+ if (num_props < sizeof(props) / sizeof(props[0])) {
+ char buf[PROPERTY_KEY_MAX + PROPERTY_VALUE_MAX + 10];
+ snprintf(buf, sizeof(buf), "[%s]: [%s]\n", key, name);
+ props[num_props++] = strdup(buf);
+ }
+}
+
+static int compare_prop(const void *a, const void *b) {
+ return strcmp(*(char * const *) a, *(char * const *) b);
+}
+
+/* prints all the system properties */
+void print_properties() {
+ size_t i;
+ num_props = 0;
+ property_list(print_prop, NULL);
+ qsort(&props, num_props, sizeof(props[0]), compare_prop);
+
+ printf("------ SYSTEM PROPERTIES ------\n");
+ for (i = 0; i < num_props; ++i) {
+ fputs(props[i], stdout);
+ free(props[i]);
+ }
+ printf("\n");
+}
+
+/* redirect output to a service control socket */
+void redirect_to_socket(FILE *redirect, const char *service) {
+ int s = android_get_control_socket(service);
+ if (s < 0) {
+ fprintf(stderr, "android_get_control_socket(%s): %s\n", service, strerror(errno));
+ exit(1);
+ }
+ fcntl(s, F_SETFD, FD_CLOEXEC);
+ if (listen(s, 4) < 0) {
+ fprintf(stderr, "listen(control socket): %s\n", strerror(errno));
+ exit(1);
+ }
+
+ struct sockaddr addr;
+ socklen_t alen = sizeof(addr);
+ int fd = accept(s, &addr, &alen);
+ if (fd < 0) {
+ fprintf(stderr, "accept(control socket): %s\n", strerror(errno));
+ exit(1);
+ }
+
+ fflush(redirect);
+ dup2(fd, fileno(redirect));
+ close(fd);
+}
+
+/* redirect output to a file */
+void redirect_to_file(FILE *redirect, char *path) {
+ char *chp = path;
+
+ /* skip initial slash */
+ if (chp[0] == '/')
+ chp++;
+
+ /* create leading directories, if necessary */
+ while (chp && chp[0]) {
+ chp = strchr(chp, '/');
+ if (chp) {
+ *chp = 0;
+ mkdir(path, 0770); /* drwxrwx--- */
+ *chp++ = '/';
+ }
+ }
+
+ int fd = TEMP_FAILURE_RETRY(open(path, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH));
+ if (fd < 0) {
+ fprintf(stderr, "%s: %s\n", path, strerror(errno));
+ exit(1);
+ }
+
+ TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect)));
+ close(fd);
+}
+
+static bool should_dump_native_traces(const char* path) {
+ for (const char** p = native_processes_to_dump; *p; p++) {
+ if (!strcmp(*p, path)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */
+const char *dump_traces() {
+ const char* result = NULL;
+
+ char traces_path[PROPERTY_VALUE_MAX] = "";
+ property_get("dalvik.vm.stack-trace-file", traces_path, "");
+ if (!traces_path[0]) return NULL;
+
+ /* move the old traces.txt (if any) out of the way temporarily */
+ char anr_traces_path[PATH_MAX];
+ strlcpy(anr_traces_path, traces_path, sizeof(anr_traces_path));
+ strlcat(anr_traces_path, ".anr", sizeof(anr_traces_path));
+ if (rename(traces_path, anr_traces_path) && errno != ENOENT) {
+ fprintf(stderr, "rename(%s, %s): %s\n", traces_path, anr_traces_path, strerror(errno));
+ return NULL; // Can't rename old traces.txt -- no permission? -- leave it alone instead
+ }
+
+ /* create a new, empty traces.txt file to receive stack dumps */
+ int fd = TEMP_FAILURE_RETRY(open(traces_path, O_CREAT | O_WRONLY | O_TRUNC | O_NOFOLLOW | O_CLOEXEC,
+ 0666)); /* -rw-rw-rw- */
+ if (fd < 0) {
+ fprintf(stderr, "%s: %s\n", traces_path, strerror(errno));
+ return NULL;
+ }
+ int chmod_ret = fchmod(fd, 0666);
+ if (chmod_ret < 0) {
+ fprintf(stderr, "fchmod on %s failed: %s\n", traces_path, strerror(errno));
+ close(fd);
+ return NULL;
+ }
+
+ /* Variables below must be initialized before 'goto' statements */
+ int dalvik_found = 0;
+ int ifd, wfd = -1;
+
+ /* walk /proc and kill -QUIT all Dalvik processes */
+ DIR *proc = opendir("/proc");
+ if (proc == NULL) {
+ fprintf(stderr, "/proc: %s\n", strerror(errno));
+ goto error_close_fd;
+ }
+
+ /* use inotify to find when processes are done dumping */
+ ifd = inotify_init();
+ if (ifd < 0) {
+ fprintf(stderr, "inotify_init: %s\n", strerror(errno));
+ goto error_close_fd;
+ }
+
+ wfd = inotify_add_watch(ifd, traces_path, IN_CLOSE_WRITE);
+ if (wfd < 0) {
+ fprintf(stderr, "inotify_add_watch(%s): %s\n", traces_path, strerror(errno));
+ goto error_close_ifd;
+ }
+
+ struct dirent *d;
+ while ((d = readdir(proc))) {
+ int pid = atoi(d->d_name);
+ if (pid <= 0) continue;
+
+ char path[PATH_MAX];
+ char data[PATH_MAX];
+ snprintf(path, sizeof(path), "/proc/%d/exe", pid);
+ ssize_t len = readlink(path, data, sizeof(data) - 1);
+ if (len <= 0) {
+ continue;
+ }
+ data[len] = '\0';
+
+ if (!strncmp(data, "/system/bin/app_process", strlen("/system/bin/app_process"))) {
+ /* skip zygote -- it won't dump its stack anyway */
+ snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
+ int cfd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC));
+ len = read(cfd, data, sizeof(data) - 1);
+ close(cfd);
+ if (len <= 0) {
+ continue;
+ }
+ data[len] = '\0';
+ if (!strncmp(data, "zygote", strlen("zygote"))) {
+ continue;
+ }
+
+ ++dalvik_found;
+ uint64_t start = nanotime();
+ if (kill(pid, SIGQUIT)) {
+ fprintf(stderr, "kill(%d, SIGQUIT): %s\n", pid, strerror(errno));
+ continue;
+ }
+
+ /* wait for the writable-close notification from inotify */
+ struct pollfd pfd = { ifd, POLLIN, 0 };
+ int ret = poll(&pfd, 1, 5000); /* 5 sec timeout */
+ if (ret < 0) {
+ fprintf(stderr, "poll: %s\n", strerror(errno));
+ } else if (ret == 0) {
+ fprintf(stderr, "warning: timed out dumping pid %d\n", pid);
+ } else {
+ struct inotify_event ie;
+ read(ifd, &ie, sizeof(ie));
+ }
+
+ if (lseek(fd, 0, SEEK_END) < 0) {
+ fprintf(stderr, "lseek: %s\n", strerror(errno));
+ } else {
+ dprintf(fd, "[dump dalvik stack %d: %.3fs elapsed]\n",
+ pid, (float)(nanotime() - start) / NANOS_PER_SEC);
+ }
+ } else if (should_dump_native_traces(data)) {
+ /* dump native process if appropriate */
+ if (lseek(fd, 0, SEEK_END) < 0) {
+ fprintf(stderr, "lseek: %s\n", strerror(errno));
+ } else {
+ static uint16_t timeout_failures = 0;
+ uint64_t start = nanotime();
+
+ /* If 3 backtrace dumps fail in a row, consider debuggerd dead. */
+ if (timeout_failures == 3) {
+ dprintf(fd, "too many stack dump failures, skipping...\n");
+ } else if (dump_backtrace_to_file_timeout(pid, fd, 20) == -1) {
+ dprintf(fd, "dumping failed, likely due to a timeout\n");
+ timeout_failures++;
+ } else {
+ timeout_failures = 0;
+ }
+ dprintf(fd, "[dump native stack %d: %.3fs elapsed]\n",
+ pid, (float)(nanotime() - start) / NANOS_PER_SEC);
+ }
+ }
+ }
+
+ if (dalvik_found == 0) {
+ fprintf(stderr, "Warning: no Dalvik processes found to dump stacks\n");
+ }
+
+ static char dump_traces_path[PATH_MAX];
+ strlcpy(dump_traces_path, traces_path, sizeof(dump_traces_path));
+ strlcat(dump_traces_path, ".bugreport", sizeof(dump_traces_path));
+ if (rename(traces_path, dump_traces_path)) {
+ fprintf(stderr, "rename(%s, %s): %s\n", traces_path, dump_traces_path, strerror(errno));
+ goto error_close_ifd;
+ }
+ result = dump_traces_path;
+
+ /* replace the saved [ANR] traces.txt file */
+ rename(anr_traces_path, traces_path);
+
+error_close_ifd:
+ close(ifd);
+error_close_fd:
+ close(fd);
+ return result;
+}
+
+void dump_route_tables() {
+ const char* const RT_TABLES_PATH = "/data/misc/net/rt_tables";
+ dump_file("RT_TABLES", RT_TABLES_PATH);
+ FILE* fp = fopen(RT_TABLES_PATH, "re");
+ if (!fp) {
+ printf("*** %s: %s\n", RT_TABLES_PATH, strerror(errno));
+ return;
+ }
+ char table[16];
+ // Each line has an integer (the table number), a space, and a string (the table name). We only
+ // need the table number. It's a 32-bit unsigned number, so max 10 chars. Skip the table name.
+ // Add a fixed max limit so this doesn't go awry.
+ for (int i = 0; i < 64 && fscanf(fp, " %10s %*s", table) == 1; ++i) {
+ run_command("ROUTE TABLE IPv4", 10, "ip", "-4", "route", "show", "table", table, NULL);
+ run_command("ROUTE TABLE IPv6", 10, "ip", "-6", "route", "show", "table", table, NULL);
+ }
+ fclose(fp);
+}
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-21 09:55:02 +0000