io/tst-posix_fallocate-common.c

   1 /* Common posix_fallocate tests definitions.
   2    Copyright (C) 2016 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fcntl.h>
  20 #include <sys/types.h>
  21 #include <sys/stat.h>
  22 #include <unistd.h>
  23
  24 static void do_prepare (void);
  25 #define PREPARE(argc, argv)     do_prepare ()
  26 static int do_test (void);
  27 #define TEST_FUNCTION           do_test ()
  28
  29 #define TIMEOUT 20 /* sec.  */
  30
  31 #include <test-skeleton.c>
  32
  33 static char *temp_filename;
  34 static int temp_fd;
  35
  36 static void
  37 do_prepare (void)
  38 {
  39   temp_fd = create_temp_file ("tst-posix_fallocate.", &temp_filename);
  40   if (temp_fd == -1)
  41     FAIL_EXIT1 ("cannot create temporary file: %m\n");
  42 }
  43
  44 #define FAIL(str) \
  45   do { printf ("error: %s (line %d)\n", str, __LINE__); return 1; } while (0)
  46
  47 static int
  48 do_test_with_offset (off_t offset)
  49 {
  50   struct stat st;
  51
  52   if (posix_fallocate (temp_fd, offset, 768) != 0)
  53     FAIL_EXIT1 ("1st posix_fallocate call failed");
  54
  55   if (fstat (temp_fd, &st) != 0)
  56     FAIL_EXIT1 ("2nd fstat failed");
  57
  58   if (st.st_size != (offset + 768))
  59     FAIL_EXIT1 ("file size after first posix_fallocate call is %lu, "
  60                 "expected %lu",
  61                 (unsigned long int) st.st_size, 512lu + 768lu);
  62
  63   if (posix_fallocate (temp_fd, 0, 1024) != 0)
  64     FAIL_EXIT1 ("2nd posix_fallocate call failed");
  65
  66   if (fstat (temp_fd, &st) != 0)
  67     FAIL_EXIT1 ("3rd fstat failed");
  68
  69   if (st.st_size != (offset) + 768)
  70     FAIL_EXIT1 ("file size changed in second posix_fallocate");
  71
  72   offset += 2048;
  73   if (posix_fallocate (temp_fd, offset, 64) != 0)
  74     FAIL_EXIT1 ("3rd posix_fallocate call failed");
  75
  76   if (fstat (temp_fd, &st) != 0)
  77     FAIL_EXIT1 ("4th fstat failed");
  78
  79   if (st.st_size != (offset + 64))
  80     FAIL_EXIT1 ("file size after first posix_fallocate call is %llu, "
  81                 "expected %u",
  82                 (unsigned long long int) st.st_size, 2048u + 64u);
  83
  84   return 0;
  85 }