1 /*
2  * Copyright © 2018 Alexey Dobriyan <adobriyan@gmail.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 // Test that /proc/self gives correct TGID.
17 #undef NDEBUG
18 #include <assert.h>
19 #include <stdio.h>
20 #include <unistd.h>
21 
22 #include "proc.h"
23 
24 int main(void)
25 {
26 	char buf1[64], buf2[64];
27 	pid_t pid;
28 	ssize_t rv;
29 
30 	pid = sys_getpid();
31 	snprintf(buf1, sizeof(buf1), "%u", pid);
32 
33 	rv = readlink("/proc/self", buf2, sizeof(buf2));
34 	assert(rv == strlen(buf1));
35 	buf2[rv] = '\0';
36 	assert(streq(buf1, buf2));
37 
38 	return 0;
39 }
40