posix/tst-pathconf.c

   1 /* Test that values of pathconf and fpathconf are consistent for a file.
   2    Copyright (C) 2013-2016 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 <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24
  25
  26 static void prepare (void);
  27 #define PREPARE(argc, argv) prepare ()
  28
  29 static int do_test (void);
  30 #define TEST_FUNCTION do_test ()
  31
  32 #include "../test-skeleton.c"
  33
  34 static int dir_fd;
  35 static char *dirbuf;
  36
  37 static void
  38 prepare (void)
  39 {
  40   size_t test_dir_len = strlen (test_dir);
  41   static const char dir_name[] = "/tst-pathconf.XXXXXX";
  42
  43   size_t dirbuflen = test_dir_len + sizeof (dir_name);
  44   dirbuf = malloc (dirbuflen);
  45   if (dirbuf == NULL)
  46     {
  47       puts ("Out of memory");
  48       exit (1);
  49     }
  50
  51   snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
  52   if (mkdtemp (dirbuf) == NULL)
  53     {
  54       printf ("Cannot create temporary directory: %s\n", strerror (errno));
  55       exit (1);
  56     }
  57
  58   add_temp_file (dirbuf);
  59
  60   dir_fd = open (dirbuf, O_RDONLY);
  61   if (dir_fd == -1)
  62     {
  63       printf ("Cannot open directory: %s\n", strerror (errno));
  64       exit (1);
  65     }
  66 }
  67
  68
  69 static int
  70 do_test (void)
  71 {
  72   int ret = 0;
  73   static const char *fifo_name = "some-fifo";
  74
  75   size_t filenamelen = strlen (dirbuf) + strlen (fifo_name) + 2;
  76   char *filename = malloc (filenamelen);
  77
  78   snprintf (filename, filenamelen, "%s/%s", dirbuf, fifo_name);
  79
  80   /* Create a fifo in the directory.  */
  81   int e = mkfifo (filename, 0777);
  82   if (e == -1)
  83     {
  84       printf ("fifo creation failed (%s)\n", strerror (errno));
  85       ret = 1;
  86       goto out_nofifo;
  87     }
  88
  89   long dir_pathconf = pathconf (dirbuf, _PC_PIPE_BUF);
  90
  91   if (dir_pathconf < 0)
  92     {
  93       printf ("pathconf on directory failed: %s\n", strerror (errno));
  94       ret = 1;
  95       goto out_nofifo;
  96     }
  97
  98   long fifo_pathconf = pathconf (filename, _PC_PIPE_BUF);
  99
 100   if (fifo_pathconf < 0)
 101     {
 102       printf ("pathconf on file failed: %s\n", strerror (errno));
 103       ret = 1;
 104       goto out_nofifo;
 105     }
 106
 107   int fifo = open (filename, O_RDONLY | O_NONBLOCK);
 108
 109   if (fifo < 0)
 110     {
 111       printf ("fifo open failed (%s)\n", strerror (errno));
 112       ret = 1;
 113       goto out_nofifo;
 114     }
 115
 116   long dir_fpathconf = fpathconf (dir_fd, _PC_PIPE_BUF);
 117
 118   if (dir_fpathconf < 0)
 119     {
 120       printf ("fpathconf on directory failed: %s\n", strerror (errno));
 121       ret = 1;
 122       goto out;
 123     }
 124
 125   long fifo_fpathconf = fpathconf (fifo, _PC_PIPE_BUF);
 126
 127   if (fifo_fpathconf < 0)
 128     {
 129       printf ("fpathconf on file failed: %s\n", strerror (errno));
 130       ret = 1;
 131       goto out;
 132     }
 133
 134   if (fifo_pathconf != fifo_fpathconf)
 135     {
 136       printf ("fifo pathconf (%ld) != fifo fpathconf (%ld)\n", fifo_pathconf,
 137               fifo_fpathconf);
 138       ret = 1;
 139       goto out;
 140     }
 141
 142   if (dir_pathconf != fifo_pathconf)
 143     {
 144       printf ("directory pathconf (%ld) != fifo pathconf (%ld)\n",
 145               dir_pathconf, fifo_pathconf);
 146       ret = 1;
 147       goto out;
 148     }
 149
 150   if (dir_fpathconf != fifo_fpathconf)
 151     {
 152       printf ("directory fpathconf (%ld) != fifo fpathconf (%ld)\n",
 153               dir_fpathconf, fifo_fpathconf);
 154       ret = 1;
 155       goto out;
 156     }
 157
 158 out:
 159   close (fifo);
 160 out_nofifo:
 161   close (dir_fd);
 162
 163   if (unlink (filename) != 0)
 164     {
 165       printf ("Could not remove fifo (%s)\n", strerror (errno));
 166       ret = 1;
 167     }
 168
 169   if (rmdir (dirbuf) != 0)
 170     {
 171       printf ("Could not remove directory (%s)\n", strerror (errno));
 172       ret = 1;
 173     }
 174
 175   return ret;
 176 }