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/* COVERAGE: setns */
#define _GNU_SOURCE
#include <sys/types.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#ifndef CLONE_NEWIPC
#define CLONE_NEWIPC 0x08000000
#endif
int main()
{
// This testcase can crash the s390x kernel. Please, refer to rhbz1219586.
// Skipping it on that platform.
#ifndef __s390__
char *fn;
int fd;
fn = malloc(1000);
sprintf(fn, "/proc/%d/ns/pid\0", getpid());
fd = open(fn, O_RDONLY);
#ifdef __NR_setns
// using syscall() to avoid link time issues on rhel6
syscall(__NR_setns, fd, 0);
//staptest// setns (NNNN, 0x0) = NNNN
syscall(__NR_setns, fd, CLONE_NEWIPC);
//staptest// setns (NNNN, CLONE_NEWIPC) = NNNN
// Limit testing
syscall(__NR_setns, -1, CLONE_NEWIPC);
//staptest// setns (-1, CLONE_NEWIPC) = -NNNN
syscall(__NR_setns, fd, -1);
//staptest// setns (NNNN, CLONE_VM|CLONE_FS|CLONE_FILES[^\)]+) = -NNNN
#endif
close(fd);
free(fn);
#endif
return 0;
}
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