resource/tst-getrlimit.c

   1 /* Copyright (C) 2005-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but 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
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <stdbool.h>
  20 #include <stdio.h>
  21 #include <sys/resource.h>
  22
  23
  24 static struct
  25 {
  26   const char *name;
  27   int resource;
  28   bool required;
  29 } tests[] =
  30   {
  31     /* The following 7 limits are part of POSIX and must exist.  */
  32     { "RLIMIT_CORE", RLIMIT_CORE, true },
  33     { "RLIMIT_CPU", RLIMIT_CPU, true },
  34     { "RLIMIT_DATA", RLIMIT_DATA, true },
  35     { "RLIMIT_FSIZE", RLIMIT_FSIZE, true },
  36     { "RLIMIT_NOFILE", RLIMIT_NOFILE, true },
  37     { "RLIMIT_STACK", RLIMIT_STACK, true },
  38     { "RLIMIT_AS", RLIMIT_AS, true },
  39     /* The following are traditional Unix limits which are also
  40        expected (by us).  */
  41     { "RLIMIT_RSS", RLIMIT_RSS, true },
  42     { "RLIMIT_NPROC", RLIMIT_NPROC, true },
  43     /* The following are extensions.  */
  44 #ifdef RLIMIT_MEMLOCK
  45     { "RLIMIT_MEMLOCK", RLIMIT_MEMLOCK, false },
  46 #endif
  47 #ifdef RLIMIT_LOCKS
  48     { "RLIMIT_LOCKS", RLIMIT_LOCKS, false },
  49 #endif
  50 #ifdef RLIMIT_SIGPENDING
  51     { "RLIMIT_SIGPENDING", RLIMIT_SIGPENDING, false },
  52 #endif
  53 #ifdef RLIMIT_MSGQUEUE
  54     { "RLIMIT_MSGQUEUE", RLIMIT_MSGQUEUE, false },
  55 #endif
  56 #ifdef RLIMIT_NICE
  57     { "RLIMIT_NICE", RLIMIT_NICE, false },
  58 #endif
  59 #ifdef RLIMIT_RTPRIO
  60     { "RLIMIT_RTPRIO", RLIMIT_RTPRIO, false },
  61 #endif
  62   };
  63 #define ntests (sizeof (tests) / sizeof (tests[0]))
  64
  65
  66 static int
  67 do_test (void)
  68 {
  69   int status = 0;
  70
  71   for (int i = 0; i < ntests; ++i)
  72     {
  73       bool this_ok = true;
  74
  75       struct rlimit r;
  76       int res = getrlimit (tests[i].resource, &r);
  77       if (res == -1)
  78         {
  79           if (errno == EINVAL)
  80             {
  81               if (tests[i].required)
  82                 {
  83                   printf ("limit %s expectedly not available for getrlimit\n",
  84                           tests[i].name);
  85                   status = 1;
  86                   this_ok = false;
  87                 }
  88             }
  89           else
  90             {
  91               printf ("getrlimit for %s returned unexpected error: %m\n",
  92                       tests[i].name);
  93               status = 1;
  94               this_ok = false;
  95             }
  96         }
  97
  98       struct rlimit64 r64;
  99       res = getrlimit64 (tests[i].resource, &r64);
 100       if (res == -1)
 101         {
 102           if (errno == EINVAL)
 103             {
 104               if (tests[i].required)
 105                 {
 106                   printf ("limit %s expectedly not available for getrlimit64"
 107                           "\n", tests[i].name);
 108                   status = 1;
 109                   this_ok = false;
 110                 }
 111             }
 112           else
 113             {
 114               printf ("getrlimit64 for %s returned unexpected error: %m\n",
 115                       tests[i].name);
 116               status = 1;
 117               this_ok = false;
 118             }
 119         }
 120
 121       if (this_ok)
 122         printf ("limit %s OK\n", tests[i].name);
 123     }
 124
 125   return status;
 126 }
 127
 128 #define TEST_FUNCTION do_test ()
 129 #include "../test-skeleton.c"