io/tst-posix_fallocate-common.c

   1 /* Common posix_fallocate tests definitions.
   2    Copyright (C) 2016-2023 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 <fcntl.h>
  20 #include <limits.h>
  21 #include <stdint.h>
  22 #include <sys/stat.h>
  23 #include <sys/types.h>
  24 #include <unistd.h>
  25
  26 #include <support/support.h>
  27 #include <support/check.h>
  28 #include <support/temp_file.h>
  29
  30 static char *temp_filename;
  31 static int temp_fd;
  32
  33 static void
  34 do_prepare (int argc, char **argv)
  35 {
  36   temp_fd = create_temp_file ("tst-posix_fallocate.", &temp_filename);
  37   if (temp_fd == -1)
  38     FAIL_EXIT1 ("cannot create temporary file: %m\n");
  39 }
  40 #define PREPARE do_prepare
  41
  42 static int
  43 do_test_with_offset (off_t offset)
  44 {
  45   struct stat st;
  46
  47   if (posix_fallocate (temp_fd, offset, 768) != 0)
  48     FAIL_EXIT1 ("1st posix_fallocate call failed");
  49
  50   if (fstat (temp_fd, &st) != 0)
  51     FAIL_EXIT1 ("2nd fstat failed");
  52
  53   if (st.st_size != (offset + 768))
  54     FAIL_EXIT1 ("file size after first posix_fallocate call is %lu, "
  55                 "expected %lu",
  56                 (unsigned long int) st.st_size, 512lu + 768lu);
  57
  58   if (posix_fallocate (temp_fd, 0, 1024) != 0)
  59     FAIL_EXIT1 ("2nd posix_fallocate call failed");
  60
  61   if (fstat (temp_fd, &st) != 0)
  62     FAIL_EXIT1 ("3rd fstat failed");
  63
  64   if (st.st_size != (offset) + 768)
  65     FAIL_EXIT1 ("file size changed in second posix_fallocate");
  66
  67   offset += 2048;
  68   if (posix_fallocate (temp_fd, offset, 64) != 0)
  69     FAIL_EXIT1 ("3rd posix_fallocate call failed");
  70
  71   if (fstat (temp_fd, &st) != 0)
  72     FAIL_EXIT1 ("4th fstat failed");
  73
  74   if (st.st_size != (offset + 64))
  75     FAIL_EXIT1 ("file size after first posix_fallocate call is %llu, "
  76                 "expected %u",
  77                 (unsigned long long int) st.st_size, 2048u + 64u);
  78
  79   return 0;
  80 }
  81
  82 /* This function is defined by the individual tests.  */
  83 static int do_test (void);
  84
  85 #include <support/test-driver.c>