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android_frameworks_base/cmds/dumpstate/dumpstate.c
Mike Lockwood 8d5337301b dumpstate: Add option to output to socket, disable code that switched to nonroot 
This will be used to allow running dumpstate as root from the init process
to enable gathering debugging information that requires root to access.

Change-Id: I5bb7e83071fad2b377e549058f318a5118194061
Signed-off-by: Mike Lockwood <lockwood@android.com>
2009-09-02 20:31:33 -04:00

343 lines
10 KiB
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/*
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <limits.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <cutils/sockets.h>
#include "private/android_filesystem_config.h"
#include "dumpstate.h"
static char* const gzip_args[] = { "gzip", "-6", 0 };
static int start_pattern[] = { 150, 0 };
static int end_pattern[] = { 75, 50, 75, 50, 75, 0 };
static struct tm now;
static void dump_kernel_log(const char *path, const char *title) ;
/* dumps the current system state to stdout */
static void dumpstate(int full) {
if (full) {
PRINT("========================================================");
PRINT("== dumpstate");
PRINT("========================================================");
PRINT("------ MEMORY INFO ------");
DUMP("/proc/meminfo");
PRINT("------ CPU INFO ------");
EXEC7("top", "-n", "1", "-d", "1", "-m", "30", "-t");
PRINT("------ PROCRANK ------");
EXEC_XBIN("procrank");
PRINT("------ VIRTUAL MEMORY STATS ------");
DUMP("/proc/vmstat");
PRINT("------ SLAB INFO ------");
DUMP("/proc/slabinfo");
PRINT("------ ZONEINFO ------");
DUMP("/proc/zoneinfo");
PRINT("------ SYSTEM LOG ------");
EXEC4("logcat", "-v", "time", "-d", "*:v");
PRINT("------ VM TRACES ------");
DUMP("/data/anr/traces.txt");
PRINT("------ EVENT LOG TAGS ------");
DUMP("/etc/event-log-tags");
PRINT("------ EVENT LOG ------");
EXEC6("logcat", "-b", "events", "-v", "time", "-d", "*:v");
PRINT("------ RADIO LOG ------");
EXEC6("logcat", "-b", "radio", "-v", "time", "-d", "*:v");
PRINT("------ NETWORK STATE ------");
PRINT("Interfaces:");
EXEC("netcfg");
PRINT("");
PRINT("Routes:");
DUMP("/proc/net/route");
PRINT("------ SYSTEM PROPERTIES ------");
print_properties();
PRINT("------ KERNEL LOG ------");
EXEC("dmesg");
PRINT("------ KERNEL WAKELOCKS ------");
DUMP("/proc/wakelocks");
PRINT("");
PRINT("------ PROCESSES ------");
EXEC("ps");
PRINT("------ PROCESSES AND THREADS ------");
EXEC2("ps", "-t", "-p");
PRINT("------ LIBRANK ------");
EXEC_XBIN("librank");
PRINT("------ BINDER FAILED TRANSACTION LOG ------");
DUMP("/proc/binder/failed_transaction_log");
PRINT("");
PRINT("------ BINDER TRANSACTION LOG ------");
DUMP("/proc/binder/transaction_log");
PRINT("");
PRINT("------ BINDER TRANSACTIONS ------");
DUMP("/proc/binder/transactions");
PRINT("");
PRINT("------ BINDER STATS ------");
DUMP("/proc/binder/stats");
PRINT("");
PRINT("------ BINDER PROCESS STATE: $i ------");
DUMP_FILES("/proc/binder/proc");
PRINT("------ FILESYSTEMS ------");
EXEC("df");
PRINT("------ PACKAGE SETTINGS ------");
DUMP("/data/system/packages.xml");
PRINT("------ PACKAGE UID ERRORS ------");
DUMP("/data/system/uiderrors.txt");
dump_kernel_log("/data/dontpanic/last_kmsg", "RAMCONSOLE");
dump_kernel_log("/data/dontpanic/apanic_console",
"PANIC CONSOLE");
dump_kernel_log("/data/dontpanic/apanic_threads",
"PANIC THREADS");
}
PRINT("========================================================");
PRINT("== build.prop");
PRINT("========================================================");
/* the crash server parses key-value pairs between the VERSION INFO and
* END lines so we can aggregate crash reports based on this data.
*/
PRINT("------ VERSION INFO ------");
print_date("currenttime=", &now);
DUMP_PROMPT("kernel.version=", "/proc/version");
DUMP_PROMPT("kernel.cmdline=", "/proc/cmdline");
DUMP("/system/build.prop");
PROPERTY("gsm.version.ril-impl");
PROPERTY("gsm.version.baseband");
PROPERTY("gsm.imei");
PROPERTY("gsm.sim.operator.numeric");
PROPERTY("gsm.operator.alpha");
PRINT("------ END ------");
if (full) {
PRINT("========================================================");
PRINT("== dumpsys");
PRINT("========================================================");
/* the full dumpsys is starting to take a long time, so we need
to increase its timeout. we really need to do the timeouts in
dumpsys itself... */
EXEC_TIMEOUT("dumpsys", 60);
}
}
/* used to check the file name passed via argv[0] */
static int check_command_name(const char* name, const char* test) {
int name_length, test_length;
if (!strcmp(name, test))
return 1;
name_length = strlen(name);
test_length = strlen(test);
if (name_length > test_length + 2) {
name += (name_length - test_length);
if (name[-1] != '/')
return 0;
if (!strcmp(name, test))
return 1;
}
return 0;
}
int main(int argc, char *argv[]) {
int dumpcrash = check_command_name(argv[0], "dumpcrash");
int add_date = 0;
char* outfile = 0;
int vibrate = 0;
int compress = 0;
int socket = 0;
int c, fd, vibrate_fd, fds[2];
char path[PATH_MAX];
pid_t pid;
gid_t groups[] = { AID_LOG, AID_SDCARD_RW };
/* set as high priority, and protect from OOM killer */
setpriority(PRIO_PROCESS, 0, -20);
protect_from_oom_killer();
get_time(&now);
do {
c = getopt(argc, argv, "do:svz");
if (c == EOF)
break;
switch (c) {
case 'd':
add_date = 1;
break;
case 'o':
outfile = optarg;
break;
case 'v':
vibrate = 1;
break;
case 'z':
compress = 1;
break;
case 's':
socket = 1;
break;
case '?':
fprintf(stderr, "%s: invalid option -%c\n",
argv[0], optopt);
exit(1);
}
} while (1);
/* open vibrator before switching user */
if (vibrate) {
vibrate_fd = open("/sys/class/timed_output/vibrator/enable", O_WRONLY);
if (vibrate_fd > 0)
fcntl(vibrate_fd, F_SETFD, FD_CLOEXEC);
} else
vibrate_fd = -1;
#if 0
/* switch to non-root user and group */
setgroups(sizeof(groups)/sizeof(groups[0]), groups);
setuid(AID_SHELL);
#endif
/* make it safe to use both printf and STDOUT_FILENO */
setvbuf(stdout, 0, _IONBF, 0);
if (socket) {
struct sockaddr addr;
socklen_t alen;
int s = android_get_control_socket("dumpstate");
if (s < 0) {
fprintf(stderr, "could not open dumpstate socket\n");
exit(1);
}
if (listen(s, 4) < 0) {
fprintf(stderr, "could not listen on dumpstate socket\n");
exit(1);
}
alen = sizeof(addr);
fd = accept(s, &addr, &alen);
if (fd < 0) {
fprintf(stderr, "could not accept dumpstate socket\n");
exit(1);
}
/* redirect stdout to the socket */
dup2(fd, STDOUT_FILENO);
close(fd);
} else if (outfile) {
if (strlen(outfile) > sizeof(path) - 100)
exit(1);
strcpy(path, outfile);
if (add_date) {
char date[260];
strftime(date, sizeof(date),
"-%Y-%m-%d-%H-%M-%S",
&now);
strcat(path, date);
}
if (compress)
strcat(path, ".gz");
else
strcat(path, ".txt");
/* ensure that all directories in the path exist */
create_directories(path);
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if (fd < 0)
return fd;
if (compress) {
pipe(fds);
/* redirect our stdout to the pipe */
dup2(fds[1], STDOUT_FILENO);
close(fds[1]);
if ((pid = fork()) < 0)
{
fprintf(stderr, "fork error\n");
exit(1);
}
if (pid) {
/* parent case */
/* close our copy of the input to gzip */
close(fds[0]);
/* close our copy of the output file */
close(fd);
} else {
/* child case */
/* redirect our input pipe to stdin */
dup2(fds[0], STDIN_FILENO);
close(fds[0]);
/* redirect stdout to the output file */
dup2(fd, STDOUT_FILENO);
close(fd);
/* run gzip to postprocess our output */
execv("/system/bin/gzip", gzip_args);
fprintf(stderr, "execv returned\n");
}
} else {
/* redirect stdout to the output file */
dup2(fd, STDOUT_FILENO);
close(fd);
}
}
/* else everything will print to stdout */
if (vibrate) {
vibrate_pattern(vibrate_fd, start_pattern);
}
dumpstate(!dumpcrash);
if (vibrate) {
vibrate_pattern(vibrate_fd, end_pattern);
close(vibrate_fd);
}
/* so gzip will terminate */
close(STDOUT_FILENO);
return 0;
}
static void dump_kernel_log(const char *path, const char *title)
{
printf("------ KERNEL %s LOG ------\n", title);
if (access(path, R_OK) < 0)
printf("%s: %s\n", path, strerror(errno));
else
DUMP(path);
}
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