96e11b5bc4
Also add ability to do abbreviated logging where only the first 4K bytes and last 4K bytes of output are added to the desginated log. Also update standalog logwrapper command to support the new options. Change-Id: Ia49cbe58479b9f9ed077498d6852e20b21287bad
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/*
|
|
* 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 <sys/wait.h>
|
|
#include <unistd.h>
|
|
|
|
#include <logwrap/logwrap.h>
|
|
#include <cutils/klog.h>
|
|
|
|
#include "cutils/log.h"
|
|
|
|
void fatal(const char *msg) {
|
|
fprintf(stderr, "%s", msg);
|
|
ALOG(LOG_ERROR, "logwrapper", "%s", msg);
|
|
exit(-1);
|
|
}
|
|
|
|
void usage() {
|
|
fatal(
|
|
"Usage: logwrapper [-a] [-d] [-k] BINARY [ARGS ...]\n"
|
|
"\n"
|
|
"Forks and executes BINARY ARGS, redirecting stdout and stderr to\n"
|
|
"the Android logging system. Tag is set to BINARY, priority is\n"
|
|
"always LOG_INFO.\n"
|
|
"\n"
|
|
"-a: Causes logwrapper to do abbreviated logging.\n"
|
|
" This logs up to the first 4K and last 4K of the command\n"
|
|
" being run, and logs the output when the command exits\n"
|
|
"-d: Causes logwrapper to SIGSEGV when BINARY terminates\n"
|
|
" fault address is set to the status of wait()\n"
|
|
"-k: Causes logwrapper to log to the kernel log instead of\n"
|
|
" the Android system log\n");
|
|
}
|
|
|
|
int main(int argc, char* argv[]) {
|
|
int seg_fault_on_exit = 0;
|
|
int log_target = LOG_ALOG;
|
|
bool abbreviated = false;
|
|
int ch;
|
|
int status = 0xAAAA;
|
|
int rc;
|
|
|
|
while ((ch = getopt(argc, argv, "adk")) != -1) {
|
|
switch (ch) {
|
|
case 'a':
|
|
abbreviated = true;
|
|
break;
|
|
case 'd':
|
|
seg_fault_on_exit = 1;
|
|
break;
|
|
case 'k':
|
|
log_target = LOG_KLOG;
|
|
klog_set_level(6);
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc < 1) {
|
|
usage();
|
|
}
|
|
|
|
rc = android_fork_execvp_ext(argc, &argv[0], &status, true,
|
|
log_target, abbreviated);
|
|
if (!rc) {
|
|
if (WIFEXITED(status))
|
|
rc = WEXITSTATUS(status);
|
|
else
|
|
rc = -ECHILD;
|
|
}
|
|
|
|
if (seg_fault_on_exit) {
|
|
*(int *)status = 0; // causes SIGSEGV with fault_address = status
|
|
}
|
|
|
|
return rc;
|
|
}
|