Add dumping of tombstones to dumpstate. (7dc7f322) · Commits · e / os / android_frameworks_native-old

cmds/dumpstate/dumpstate.c

+53 −6

Original line number	Diff line number	Diff line
		@@ -20,13 +20,13 @@
		#include <stdio.h>
		#include <stdlib.h>
		#include <string.h>
		#include <sys/capability.h>
		#include <sys/prctl.h>
		#include <sys/resource.h>
		#include <sys/stat.h>
		#include <sys/time.h>
		#include <sys/wait.h>
		#include <unistd.h>
		#include <sys/capability.h>
		#include <sys/prctl.h>

		#include <cutils/properties.h>

		@@ -45,6 +45,36 @@ static char screenshot_path[PATH_MAX] = "";

		#define PSTORE_LAST_KMSG "/sys/fs/pstore/console-ramoops"

		#define TOMBSTONE_DIR "/data/tombstones"
		#define TOMBSTONE_FILE_PREFIX TOMBSTONE_DIR "/tombstone_"
		/* Can accomodate a tombstone number up to 9999. */
		#define TOMBSTONE_MAX_LEN (sizeof(TOMBSTONE_FILE_PREFIX) + 4)
		#define NUM_TOMBSTONES 10

		typedef struct {
		char name[TOMBSTONE_MAX_LEN];
		int fd;
		} tombstone_data_t;

		static tombstone_data_t tombstone_data[NUM_TOMBSTONES];

		/* Get the fds of any tombstone that was modified in the last half an hour. */
		static void get_tombstone_fds(tombstone_data_t data[NUM_TOMBSTONES]) {
		time_t thirty_minutes_ago = time(NULL) - 60*30;
		for (size_t i = 0; i < NUM_TOMBSTONES; i++) {
		snprintf(data[i].name, sizeof(data[i].name), "%s%02zu", TOMBSTONE_FILE_PREFIX, i);
		int fd = open(data[i].name, O_RDONLY \| O_CLOEXEC \| O_NOFOLLOW);
		struct stat st;
		if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode) &&
		(time_t) st.st_mtime >= thirty_minutes_ago) {
		data[i].fd = fd;
		} else {
		close(fd);
		data[i].fd = -1;
		}
		}
		}

		/* dumps the current system state to stdout */
		static void dumpstate() {
		time_t now = time(NULL);
		@@ -119,7 +149,6 @@ static void dumpstate() {
		run_command("EVENT LOG", 20, "logcat", "-b", "events", "-v", "threadtime", "-d", "*:v", NULL);
		run_command("RADIO LOG", 20, "logcat", "-b", "radio", "-v", "threadtime", "-d", "*:v", NULL);


		/* show the traces we collected in main(), if that was done */
		if (dump_traces_path != NULL) {
		dump_file("VM TRACES JUST NOW", dump_traces_path);
		@@ -131,10 +160,13 @@ static void dumpstate() {
		property_get("dalvik.vm.stack-trace-file", anr_traces_path, "");
		if (!anr_traces_path[0]) {
		printf("*** NO VM TRACES FILE DEFINED (dalvik.vm.stack-trace-file)\n\n");
		} else if (stat(anr_traces_path, &st)) {
		} else {
		int fd = open(anr_traces_path, O_RDONLY \| O_CLOEXEC \| O_NOFOLLOW);
		if (fd < 0) {
		printf("*** NO ANR VM TRACES FILE (%s): %s\n\n", anr_traces_path, strerror(errno));
		} else {
		dump_file("VM TRACES AT LAST ANR", anr_traces_path);
		dump_file_from_fd("VM TRACES AT LAST ANR", anr_traces_path, fd);
		}
		}

		/* slow traces for slow operations */
		@@ -155,6 +187,18 @@ static void dumpstate() {
		}
		}

		int dumped = 0;
		for (size_t i = 0; i < NUM_TOMBSTONES; i++) {
		if (tombstone_data[i].fd != -1) {
		dumped = 1;
		dump_file_from_fd("TOMBSTONE", tombstone_data[i].name, tombstone_data[i].fd);
		tombstone_data[i].fd = -1;
		}
		}
		if (!dumped) {
		printf("*** NO TOMBSTONES to dump in %s\n\n", TOMBSTONE_DIR);
		}

		dump_file("NETWORK DEV INFO", "/proc/net/dev");
		dump_file("QTAGUID NETWORK INTERFACES INFO", "/proc/net/xt_qtaguid/iface_stat_all");
		dump_file("QTAGUID NETWORK INTERFACES INFO (xt)", "/proc/net/xt_qtaguid/iface_stat_fmt");
		@@ -411,6 +455,9 @@ int main(int argc, char *argv[]) {
		return -1;
		}

		/* Get the tombstone fds here while we are running as root. */
		get_tombstone_fds(tombstone_data);

		/* switch to non-root user and group */
		gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW,
		AID_MOUNT, AID_INET, AID_NET_BW_STATS };

cmds/dumpstate/dumpstate.h

+5 −2

Original line number	Diff line number	Diff line
		@@ -31,6 +31,9 @@ typedef void (for_each_userid_func)(int);
		/* prints the contents of a file */
		int dump_file(const char title, const char path);

		/* prints the contents of the fd */
		int dump_file_from_fd(const char title, const char path, int fd);

		/* forks a command and waits for it to finish -- terminate args with NULL */
		int run_command(const char title, int timeout_seconds, const char command, ...);

cmds/dumpstate/utils.c

+7 −3

Original line number	Diff line number	Diff line
		@@ -250,7 +250,6 @@ void do_showmap(int pid, const char *name) {

		/* prints the contents of a file */
		int dump_file(const char title, const char path) {
		char buffer[32768];
		int fd = open(path, O_RDONLY);
		if (fd < 0) {
		int err = errno;
		@@ -259,6 +258,11 @@ int dump_file(const char title, const char path) {
		if (title) printf("\n");
		return -1;
		}
		return dump_file_from_fd(title, path, fd);
		}

		int dump_file_from_fd(const char title, const char path, int fd) {
		char buffer[32768];

		if (title) printf("------ %s (%s", title, path);

		@@ -282,8 +286,8 @@ int dump_file(const char title, const char path) {
		}
		if (ret <= 0) break;
		}

		close(fd);

		if (!newline) printf("\n");
		if (title) printf("\n");
		return 0;