You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.6 KiB
71 lines
1.6 KiB
/*
|
|
* Copyright (c) 2015 Cedric Hnyda <chnyda@suse.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/*
|
|
* Description:
|
|
* Write the current process in argv[1]
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
static void sig_handler(int signo)
|
|
{
|
|
_exit(0);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
FILE *f;
|
|
struct sigaction sa;
|
|
|
|
if (argc != 2) {
|
|
fprintf(stderr, "Usage: %s /cgroup/.../tasks\n", argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
f = fopen(argv[1], "a");
|
|
if (!f) {
|
|
perror("fopen failed");
|
|
return 1;
|
|
}
|
|
|
|
fprintf(f, "%i\n", getpid());
|
|
fclose(f);
|
|
|
|
memset(&sa, 0, sizeof(sa));
|
|
sigemptyset(&sa.sa_mask);
|
|
sa.sa_handler = sig_handler;
|
|
|
|
if (sigaction(SIGVTALRM, &sa, NULL)) {
|
|
perror("sigaction failed");
|
|
return 1;
|
|
}
|
|
|
|
struct itimerval it = {.it_value = {.tv_sec = 0, .tv_usec = 10000}};
|
|
|
|
setitimer(ITIMER_VIRTUAL, &it, NULL);
|
|
for (;;);
|
|
return 0;
|
|
}
|