blob: 5a59cb471e32fed36bf15f9113e5083ca5ceb3ed (
plain)
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
39
40
41
42
|
/*
* Helper program for strace-D.test
*
* Copyright (c) 2019-2020 Dmitry V. Levin <ldv@strace.io>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int
main(void)
{
static const char status[] = "/proc/self/status";
FILE *fp = fopen(status, "r");
if (!fp)
perror_msg_and_fail("fopen: %s", status);
static const char prefix1[] = "PPid:";
static const char prefix2[] = "TracerPid:";
char *line = NULL;
size_t n = 0;
while (getline(&line, &n, fp) > 0) {
if (strncmp(line, prefix1, sizeof(prefix1) - 1) == 0 ||
strncmp(line, prefix2, sizeof(prefix2) - 1) == 0)
fputs(line, stdout);
}
if (!line)
perror_msg_and_fail("getline");
free(line);
fclose(fp);
return 0;
}
|
