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/*
* Copyright (C) 2014-2022 Firejail Authors
*
* This file is part of firejail project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
// compile: gcc -o testuid testuid.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
static void print_status(void) {
FILE *fp = fopen("/proc/self/status", "r");
if (!fp) {
fprintf(stderr, "Error, cannot open status file\n");
exit(1);
}
char buf[4096];
while (fgets(buf, 4096, fp)) {
if (strncmp(buf, "Uid", 3) == 0 || strncmp(buf, "Gid", 3) == 0)
printf("%s", buf);
}
fclose(fp);
}
int main(void) {
print_status();
return 0;
}
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