cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

self.c (1204B)

      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
     24int 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}