tests/test-fcntl-h.c

   1 /* Test of <fcntl.h> substitute.
   2    Copyright (C) 2007, 2009-2024 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 off64_t t4;
  39
  40 int
  41 main (void)
  42 {
  43   /* Ensure no overlap in SEEK_*. */
  44   switch (0)
  45     {
  46     case SEEK_CUR:
  47     case SEEK_END:
  48     case SEEK_SET:
  49       ;
  50     }
  51
  52   /* Ensure no dangerous overlap in non-zero gnulib-defined replacements.  */
  53   switch (O_RDONLY)
  54     {
  55       /* Access modes */
  56     case O_RDONLY:
  57     case O_WRONLY:
  58     case O_RDWR:
  59 #if O_EXEC && O_EXEC != O_RDONLY
  60     case O_EXEC:
  61 #endif
  62 #if O_SEARCH && O_EXEC != O_SEARCH && O_SEARCH != O_RDONLY
  63     case O_SEARCH:
  64 #endif
  65       i = ! (~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH));
  66       break;
  67
  68       /* Everyone should have these */
  69     case O_CREAT:
  70     case O_EXCL:
  71     case O_TRUNC:
  72     case O_APPEND:
  73       break;
  74
  75       /* These might be 0 or O_RDONLY, only test non-zero versions.  */
  76 #if O_CLOEXEC
  77     case O_CLOEXEC:
  78 #endif
  79 #if O_DIRECT
  80     case O_DIRECT:
  81 #endif
  82 #if O_DIRECTORY
  83     case O_DIRECTORY:
  84 #endif
  85 #if O_DSYNC
  86     case O_DSYNC:
  87 #endif
  88 #if O_IGNORE_CTTY
  89     case O_IGNORE_CTTY:
  90 #endif
  91 #if O_NOATIME
  92     case O_NOATIME:
  93 #endif
  94 #if O_NONBLOCK
  95     case O_NONBLOCK:
  96 #endif
  97 #if O_NOCTTY
  98     case O_NOCTTY:
  99 #endif
 100 #if O_NOFOLLOW
 101     case O_NOFOLLOW:
 102 #endif
 103 #if O_NOLINK
 104     case O_NOLINK:
 105 #endif
 106 #if O_NOLINKS
 107     case O_NOLINKS:
 108 #endif
 109 #if O_NOTRANS
 110     case O_NOTRANS:
 111 #endif
 112 #if O_RSYNC && O_RSYNC != O_DSYNC
 113     case O_RSYNC:
 114 #endif
 115 #if O_SYNC && O_SYNC != O_DSYNC && O_SYNC != O_RSYNC
 116     case O_SYNC:
 117 #endif
 118 #if O_TTY_INIT
 119     case O_TTY_INIT:
 120 #endif
 121 #if O_BINARY
 122     case O_BINARY:
 123 #endif
 124 #if O_TEXT
 125     case O_TEXT:
 126 #endif
 127       ;
 128     }
 129
 130   return !i;
 131 }