File: mlock.c

package info (click to toggle)
strace 6.13%2Bds-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 71,488 kB
  • sloc: ansic: 176,497; sh: 9,675; makefile: 4,133; cpp: 885; awk: 353; perl: 267; exp: 62; sed: 9
file content (38 lines) | stat: -rw-r--r-- 663 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
/*
 * Check decoding of mlock and munlock syscalls.
 *
 * Copyright (c) 2016-2021 The strace developers.
 * All rights reserved.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#include "tests.h"
#include "scno.h"

#ifdef __NR_mlock

# include <stdio.h>
# include <unistd.h>

int
main(void)
{
	const int size = 1024;
	const char *addr = tail_alloc(size);

	long rc = syscall(__NR_mlock, addr, size);
	printf("mlock(%p, %d) = %s\n", addr, size, sprintrc(rc));

	rc = syscall(__NR_munlock, addr, size);
	printf("munlock(%p, %d) = %s\n", addr, size, sprintrc(rc));

	puts("+++ exited with 0 +++");
	return 0;
}

#else

SKIP_MAIN_UNDEFINED("__NR_mlock")

#endif