tests/test-fcntl-h.c

   1 /* Test of <fcntl.h> substitute.
   2    Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  18
  19 #include <config.h>
  20
  21 #include <fcntl.h>
  22
  23 /* Check that the various O_* macros are defined.  */
  24 int o = (O_DIRECT | O_DIRECTORY | O_DSYNC | O_IGNORE_CTTY | O_NDELAY | O_NOATIME
  25          | O_NONBLOCK | O_NOCTTY | O_NOFOLLOW | O_NOLINK | O_NOLINKS | O_NOTRANS
  26          | O_RSYNC | O_SYNC | O_TTY_INIT | O_BINARY | O_TEXT);
  27
  28 /* Check that the various SEEK_* macros are defined.  */
  29 int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
  30
  31 /* Check that the FD_* macros are defined.  */
  32 int i = FD_CLOEXEC;
  33
  34 /* Check that the types are all defined.  */
  35 pid_t t1;
  36 off_t t2;
  37 mode_t t3;
  38
  39 int
  40 main (void)
  41 {
  42   /* Ensure no overlap in SEEK_*. */
  43   switch (0)
  44     {
  45     case SEEK_CUR:
  46     case SEEK_END:
  47     case SEEK_SET:
  48       ;
  49     }
  50
  51   /* Ensure no dangerous overlap in non-zero gnulib-defined replacements.  */
  52   switch (O_RDONLY)
  53     {
  54       /* Access modes */
  55     case O_RDONLY:
  56     case O_WRONLY:
  57     case O_RDWR:
  58 #if O_EXEC && O_EXEC != O_RDONLY
  59     case O_EXEC:
  60 #endif
  61 #if O_SEARCH && O_EXEC != O_SEARCH && O_SEARCH != O_RDONLY
  62     case O_SEARCH:
  63 #endif
  64       i = ! (~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH));
  65       break;
  66
  67       /* Everyone should have these */
  68     case O_CREAT:
  69     case O_EXCL:
  70     case O_TRUNC:
  71     case O_APPEND:
  72       break;
  73
  74       /* These might be 0 or O_RDONLY, only test non-zero versions.  */
  75 #if O_CLOEXEC
  76     case O_CLOEXEC:
  77 #endif
  78 #if O_DIRECT
  79     case O_DIRECT:
  80 #endif
  81 #if O_DIRECTORY
  82     case O_DIRECTORY:
  83 #endif
  84 #if O_DSYNC
  85     case O_DSYNC:
  86 #endif
  87 #if O_IGNORE_CTTY
  88     case O_IGNORE_CTTY:
  89 #endif
  90 #if O_NOATIME
  91     case O_NOATIME:
  92 #endif
  93 #if O_NONBLOCK
  94     case O_NONBLOCK:
  95 #endif
  96 #if O_NOCTTY
  97     case O_NOCTTY:
  98 #endif
  99 #if O_NOFOLLOW
 100     case O_NOFOLLOW:
 101 #endif
 102 #if O_NOLINK
 103     case O_NOLINK:
 104 #endif
 105 #if O_NOLINKS
 106     case O_NOLINKS:
 107 #endif
 108 #if O_NOTRANS
 109     case O_NOTRANS:
 110 #endif
 111 #if O_RSYNC && O_RSYNC != O_DSYNC
 112     case O_RSYNC:
 113 #endif
 114 #if O_SYNC && O_SYNC != O_DSYNC && O_SYNC != O_RSYNC
 115     case O_SYNC:
 116 #endif
 117 #if O_TTY_INIT
 118     case O_TTY_INIT:
 119 #endif
 120 #if O_BINARY
 121     case O_BINARY:
 122 #endif
 123 #if O_TEXT
 124     case O_TEXT:
 125 #endif
 126       ;
 127     }
 128
 129   return !i;
 130 }