io/tst-utimensat-skeleton.c

   1 /* Common tests for utimensat routines.
   2    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <array_length.h>
  20 #include <inttypes.h>
  21 #include <support/support.h>
  22 #include <support/temp_file.h>
  23 #include <stdio.h>
  24
  25 static int temp_fd = -1;
  26 static char *testfile;
  27 static char *testlink;
  28
  29 const static struct {
  30   int64_t v1;
  31   int64_t v2;
  32 } tests[] = {
  33   /* Some arbitrary date before Y2038.  */
  34   { 0x60ECA720LL, 0x60eca721LL },
  35   /* Y2038 threshold minus 2 and 1 seconds.  */
  36   { 0x7FFFFFFELL, 0x7FFFFFFFLL },
  37   /* Y2038 threshold plus 1 and 2 seconds.  */
  38   { 0x80000001LL, 0x80000002LL },
  39   /* Around Y2038 threshold.  */
  40   { 0x7FFFFFFELL, 0x80000002LL },
  41   /* Y2106 threshold minus 2 and 1 seconds.  */
  42   { 0x100000000LL, 0xFFFFFFFELL },
  43   /* Y2106 threshold plus 1 and 2 seconds.  */
  44   { 0x100000001LL, 0x100000002LL },
  45   /* Around Y2106 threshold.  */
  46   { 0xFFFFFFFELL, 0xFFFFFFFELL },
  47 };
  48
  49 #define PREPARE do_prepare
  50 static void
  51 do_prepare (int argc, char *argv[])
  52 {
  53   temp_fd = create_temp_file ("utime", &testfile);
  54   TEST_VERIFY_EXIT (temp_fd > 0);
  55
  56   testlink = xasprintf ("%s-symlink", testfile);
  57   xsymlink (testfile, testlink);
  58   add_temp_file (testlink);
  59 }
  60
  61 static int
  62 do_test (void)
  63 {
  64   if (sizeof (time_t) == 8 && !support_path_support_time64 (testfile))
  65     FAIL_UNSUPPORTED ("File %s does not support 64-bit timestamps",
  66                       testfile);
  67
  68   bool y2106 = support_path_support_time64_value (testfile,
  69                                                   0x100000001LL,
  70                                                   0x100000002LL);
  71
  72   for (int i = 0; i < array_length (tests); i++)
  73     {
  74       /* Check if we run on port with 32 bit time_t size.  */
  75       time_t t;
  76       if (__builtin_add_overflow (tests[i].v1, 0, &t)
  77           || __builtin_add_overflow (tests[i].v2, 0, &t))
  78         {
  79           printf ("warning: skipping tests[%d] { %" PRIx64 ", %" PRIx64 " }: "
  80                   "time_t overflows\n", i, tests[i].v1, tests[i].v2);
  81           continue;
  82         }
  83
  84       if (tests[i].v1 >= 0x100000000LL && !y2106)
  85         {
  86           printf ("warning: skipping tests[%d] { %" PRIx64 ", %" PRIx64 " }: "
  87                   "unsupported timestamp value\n",
  88                   i, tests[i].v1, tests[i].v2);
  89           continue;
  90         }
  91
  92       TEST_CALL (testfile, temp_fd, testlink, tests[i].v1, tests[i].v2);
  93     }
  94
  95   return 0;
  96 }
  97
  98 #include <support/test-driver.c>