src/test/test-rlimit-util.c

   1 /***
   2   This file is part of systemd
   3
   4   systemd is free software; you can redistribute it and/or modify it
   5   under the terms of the GNU Lesser General Public License as published by
   6   the Free Software Foundation; either version 2.1 of the License, or
   7   (at your option) any later version.
   8
   9   systemd is distributed in the hope that it will be useful, but
  10   WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12   Lesser General Public License for more details.
  13
  14   You should have received a copy of the GNU Lesser General Public License
  15   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  16 ***/
  17
  18 #include <sys/resource.h>
  19
  20 #include "capability-util.h"
  21 #include "macro.h"
  22 #include "rlimit-util.h"
  23 #include "string-util.h"
  24 #include "util.h"
  25
  26 int main(int argc, char *argv[]) {
  27         struct rlimit old, new, high;
  28         struct rlimit err = {
  29                 .rlim_cur = 10,
  30                 .rlim_max = 5,
  31         };
  32
  33         log_parse_environment();
  34         log_open();
  35
  36         assert_se(drop_capability(CAP_SYS_RESOURCE) == 0);
  37
  38         assert_se(getrlimit(RLIMIT_NOFILE, &old) == 0);
  39         new.rlim_cur = MIN(5U, old.rlim_max);
  40         new.rlim_max = MIN(10U, old.rlim_max);
  41         assert_se(setrlimit(RLIMIT_NOFILE, &new) >= 0);
  42
  43         assert_se(rlimit_from_string("LimitNOFILE") == RLIMIT_NOFILE);
  44         assert_se(rlimit_from_string("DefaultLimitNOFILE") == -1);
  45
  46         assert_se(streq_ptr(rlimit_to_string(RLIMIT_NOFILE), "LimitNOFILE"));
  47         assert_se(rlimit_to_string(-1) == NULL);
  48
  49         assert_se(getrlimit(RLIMIT_NOFILE, &old) == 0);
  50         assert_se(setrlimit_closest(RLIMIT_NOFILE, &old) == 0);
  51         assert_se(getrlimit(RLIMIT_NOFILE, &new) == 0);
  52         assert_se(old.rlim_cur == new.rlim_cur);
  53         assert_se(old.rlim_max == new.rlim_max);
  54
  55         assert_se(getrlimit(RLIMIT_NOFILE, &old) == 0);
  56         high = RLIMIT_MAKE_CONST(old.rlim_max + 1);
  57         assert_se(setrlimit_closest(RLIMIT_NOFILE, &high) == 0);
  58         assert_se(getrlimit(RLIMIT_NOFILE, &new) == 0);
  59         assert_se(new.rlim_max == old.rlim_max);
  60         assert_se(new.rlim_cur == new.rlim_max);
  61
  62         assert_se(getrlimit(RLIMIT_NOFILE, &old) == 0);
  63         assert_se(setrlimit_closest(RLIMIT_NOFILE, &err) == -EINVAL);
  64         assert_se(getrlimit(RLIMIT_NOFILE, &new) == 0);
  65         assert_se(old.rlim_cur == new.rlim_cur);
  66         assert_se(old.rlim_max == new.rlim_max);
  67
  68         return 0;
  69 }