mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-07-18 00:58:31 +00:00
f274f16081
This code opens a log file and duplicates the descriptor to logfd, but forgets to close the first one. Signed-off-by: Andrey Vagin <avagin@openvz.org> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
71 lines
1.1 KiB
C
71 lines
1.1 KiB
C
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <stdbool.h>
|
|
#include <limits.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
|
|
#include <fcntl.h>
|
|
|
|
#include "compiler.h"
|
|
#include "types.h"
|
|
#include "util.h"
|
|
|
|
/*
|
|
* Note pr_ helpers rely on this
|
|
* descriptor!
|
|
*/
|
|
static int logfd = STDERR_FILENO;
|
|
|
|
int get_logfd(void)
|
|
{
|
|
return logfd;
|
|
}
|
|
|
|
int init_log(const char *name)
|
|
{
|
|
struct rlimit rlimit;
|
|
int fd = STDERR_FILENO;
|
|
|
|
if (getrlimit(RLIMIT_NOFILE, &rlimit)) {
|
|
pr_err("can't get rlimit: %m\n");
|
|
return -1;
|
|
}
|
|
|
|
if (name) {
|
|
fd = open(name, O_CREAT | O_WRONLY);
|
|
if (fd == -1) {
|
|
pr_perror("Can't create log file %s\n", name);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
logfd = rlimit.rlim_cur - 1;
|
|
if (reopen_fd_as(logfd, fd) < 0) {
|
|
pr_err("can't duplicate descriptor %d->%d: %m\n",
|
|
fd, logfd);
|
|
logfd = STDERR_FILENO;
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
err:
|
|
if (name)
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
void fini_log(void)
|
|
{
|
|
if (logfd != STDERR_FILENO &&
|
|
logfd != STDIN_FILENO &&
|
|
logfd != STDERR_FILENO)
|
|
close(logfd);
|
|
|
|
logfd = STDERR_FILENO;
|
|
}
|