Magisk/jni/daemon/log_monitor.c
2017-08-19 19:27:51 +08:00

48 lines
1.1 KiB
C

/* log_monitor.c - New thread to monitor logcat
*
* Open a new thread to call logcat and get logs with tag "Magisk"
* Also, write the logs to a log file for debugging purpose
*
*/
#include <stdio.h>
#include <limits.h>
#include <pthread.h>
#include <unistd.h>
#include <sys/wait.h>
#include "magisk.h"
#include "utils.h"
#include "daemon.h"
static void *logger_thread(void *args) {
// Setup error handler
err_handler = exit_thread;
rename(LOGFILE, LASTLOG);
int log_fd, log_pid;
log_fd = xopen(LOGFILE, O_WRONLY | O_CREAT | O_CLOEXEC | O_TRUNC, 0644);
while (1) {
// Start logcat
char *const command[] = { "logcat", "-s", "Magisk", "-v", "thread", NULL };
log_pid = run_command2(0, &log_fd, NULL, command);
if (log_pid > 0)
waitpid(log_pid, NULL, 0);
// For some reason it went here, clear buffer and restart
char *const restart[] = { "logcat", "-c", NULL };
run_command(restart);
}
// Should never be here, but well...
return NULL;
}
/* Start a new thread to monitor logcat and dump to logfile */
void monitor_logs() {
pthread_t thread;
xpthread_create(&thread, NULL, logger_thread, NULL);
pthread_detach(thread);
}