src/system.h

   1 /* system-dependent definitions for fileutils, textutils, and sh-utils packages.
   2    Copyright (C) 1989, 1991-2000 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 2, or (at your option)
   7    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, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 /* Include sys/types.h before this file.  */
  19
  20 #include <sys/stat.h>
  21
  22 #if !defined(HAVE_MKFIFO)
  23 # define mkfifo(path, mode) (mknod ((path), (mode) | S_IFIFO, 0))
  24 #endif
  25
  26 #if HAVE_SYS_PARAM_H
  27 # include <sys/param.h>
  28 #endif
  29
  30 /* <unistd.h> should be included before any preprocessor test
  31    of _POSIX_VERSION.  */
  32 #if HAVE_UNISTD_H
  33 # include <unistd.h>
  34 #endif
  35
  36 #ifndef STDIN_FILENO
  37 # define STDIN_FILENO 0
  38 #endif
  39
  40 #ifndef STDOUT_FILENO
  41 # define STDOUT_FILENO 1
  42 #endif
  43
  44 #ifndef STDERR_FILENO
  45 # define STDERR_FILENO 2
  46 #endif
  47
  48
  49 #if HAVE_LIMITS_H
  50 /* limits.h must come before pathmax.h because limits.h on some systems
  51    undefs PATH_MAX, whereas pathmax.h sets PATH_MAX.  */
  52 # include <limits.h>
  53 #endif
  54
  55 #include "pathmax.h"
  56
  57 #if TIME_WITH_SYS_TIME
  58 # include <sys/time.h>
  59 # include <time.h>
  60 #else
  61 # if HAVE_SYS_TIME_H
  62 #  include <sys/time.h>
  63 # else
  64 #  include <time.h>
  65 # endif
  66 #endif
  67
  68 /* Since major is a function on SVR4, we can't use `ifndef major'.  */
  69 #if MAJOR_IN_MKDEV
  70 # include <sys/mkdev.h>
  71 # define HAVE_MAJOR
  72 #endif
  73 #if MAJOR_IN_SYSMACROS
  74 # include <sys/sysmacros.h>
  75 # define HAVE_MAJOR
  76 #endif
  77 #ifdef major                    /* Might be defined in sys/types.h.  */
  78 # define HAVE_MAJOR
  79 #endif
  80
  81 #ifndef HAVE_MAJOR
  82 # define major(dev)  (((dev) >> 8) & 0xff)
  83 # define minor(dev)  ((dev) & 0xff)
  84 # define makedev(maj, min)  (((maj) << 8) | (min))
  85 #endif
  86 #undef HAVE_MAJOR
  87
  88 #if HAVE_UTIME_H
  89 # include <utime.h>
  90 #endif
  91
  92 /* Some systems (even some that do have <utime.h>) don't declare this
  93    structure anywhere.  */
  94 #ifndef HAVE_STRUCT_UTIMBUF
  95 struct utimbuf
  96 {
  97   long actime;
  98   long modtime;
  99 };
 100 #endif
 101
 102 /* Don't use bcopy!  Use memmove if source and destination may overlap,
 103    memcpy otherwise.  */
 104
 105 #if HAVE_STRING_H
 106 # if !STDC_HEADERS && HAVE_MEMORY_H
 107 #  include <memory.h>
 108 # endif
 109 # include <string.h>
 110 #else
 111 # include <strings.h>
 112 #endif
 113
 114 #include <errno.h>
 115 #ifndef errno
 116 extern int errno;
 117 #endif
 118
 119 #if HAVE_STDLIB_H
 120 # define getopt system_getopt
 121 # include <stdlib.h>
 122 # undef getopt
 123 #endif
 124
 125 /* The following test is to work around the gross typo in
 126    systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
 127    is defined to 0, not 1.  */
 128 #if !EXIT_FAILURE
 129 # undef EXIT_FAILURE
 130 # define EXIT_FAILURE 1
 131 #endif
 132
 133 #ifndef EXIT_SUCCESS
 134 # define EXIT_SUCCESS 0
 135 #endif
 136
 137 #if HAVE_FCNTL_H
 138 # include <fcntl.h>
 139 #else
 140 # include <sys/file.h>
 141 #endif
 142
 143 #if !defined (SEEK_SET)
 144 # define SEEK_SET 0
 145 # define SEEK_CUR 1
 146 # define SEEK_END 2
 147 #endif
 148 #ifndef F_OK
 149 # define F_OK 0
 150 # define X_OK 1
 151 # define W_OK 2
 152 # define R_OK 4
 153 #endif
 154
 155 /* For systems that distinguish between text and binary I/O.
 156    O_BINARY is usually declared in fcntl.h  */
 157 #if !defined O_BINARY && defined _O_BINARY
 158   /* For MSC-compatible compilers.  */
 159 # define O_BINARY _O_BINARY
 160 # define O_TEXT _O_TEXT
 161 #endif
 162
 163 #ifdef __BEOS__
 164   /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect.  */
 165 # undef O_BINARY
 166 # undef O_TEXT
 167 #endif
 168
 169 #if O_BINARY
 170 # ifndef __DJGPP__
 171 #  define setmode _setmode
 172 #  define fileno(_fp) _fileno (_fp)
 173 # endif /* not DJGPP */
 174 # define SET_BINARY(_f) do {if (!isatty(_f)) setmode (_f, O_BINARY);} while (0)
 175 # define SET_BINARY2(_f1, _f2)          \
 176   do {                                  \
 177     if (!isatty (_f1))                  \
 178       {                                 \
 179         setmode (_f1, O_BINARY);        \
 180         if (!isatty (_f2))              \
 181           setmode (_f2, O_BINARY);      \
 182       }                                 \
 183   } while(0)
 184 #else
 185 # define SET_BINARY(f) (void)0
 186 # define SET_BINARY2(f1,f2) (void)0
 187 # define O_BINARY 0
 188 # define O_TEXT 0
 189 #endif /* O_BINARY */
 190
 191 #if HAVE_DIRENT_H
 192 # include <dirent.h>
 193 # define NLENGTH(direct) (strlen((direct)->d_name))
 194 #else /* not HAVE_DIRENT_H */
 195 # define dirent direct
 196 # define NLENGTH(direct) ((direct)->d_namlen)
 197 # if HAVE_SYS_NDIR_H
 198 #  include <sys/ndir.h>
 199 # endif /* HAVE_SYS_NDIR_H */
 200 # if HAVE_SYS_DIR_H
 201 #  include <sys/dir.h>
 202 # endif /* HAVE_SYS_DIR_H */
 203 # if HAVE_NDIR_H
 204 #  include <ndir.h>
 205 # endif /* HAVE_NDIR_H */
 206 #endif /* HAVE_DIRENT_H */
 207
 208 #if CLOSEDIR_VOID
 209 /* Fake a return value. */
 210 # define CLOSEDIR(d) (closedir (d), 0)
 211 #else
 212 # define CLOSEDIR(d) closedir (d)
 213 #endif
 214
 215 /* Get or fake the disk device blocksize.
 216    Usually defined by sys/param.h (if at all).  */
 217 #if !defined DEV_BSIZE && defined BSIZE
 218 # define DEV_BSIZE BSIZE
 219 #endif
 220 #if !defined DEV_BSIZE && defined BBSIZE /* SGI */
 221 # define DEV_BSIZE BBSIZE
 222 #endif
 223 #ifndef DEV_BSIZE
 224 # define DEV_BSIZE 4096
 225 #endif
 226
 227 /* Extract or fake data from a `struct stat'.
 228    ST_BLKSIZE: Preferred I/O blocksize for the file, in bytes.
 229    ST_NBLOCKS: Number of blocks in the file, including indirect blocks.
 230    ST_NBLOCKSIZE: Size of blocks used when calculating ST_NBLOCKS.  */
 231 #ifndef HAVE_STRUCT_STAT_ST_BLOCKS
 232 # define ST_BLKSIZE(statbuf) DEV_BSIZE
 233 # if defined(_POSIX_SOURCE) || !defined(BSIZE) /* fileblocks.c uses BSIZE.  */
 234 #  define ST_NBLOCKS(statbuf) \
 235   (S_ISREG ((statbuf).st_mode) \
 236    || S_ISDIR ((statbuf).st_mode) \
 237    ? (statbuf).st_size / ST_NBLOCKSIZE + ((statbuf).st_size % ST_NBLOCKSIZE != 0) : 0)
 238 # else /* !_POSIX_SOURCE && BSIZE */
 239 #  define ST_NBLOCKS(statbuf) \
 240   (S_ISREG ((statbuf).st_mode) \
 241    || S_ISDIR ((statbuf).st_mode) \
 242    ? st_blocks ((statbuf).st_size) : 0)
 243 # endif /* !_POSIX_SOURCE && BSIZE */
 244 #else /* HAVE_STRUCT_STAT_ST_BLOCKS */
 245 /* Some systems, like Sequents, return st_blksize of 0 on pipes. */
 246 # define ST_BLKSIZE(statbuf) ((statbuf).st_blksize > 0 \
 247                                ? (statbuf).st_blksize : DEV_BSIZE)
 248 # if defined(hpux) || defined(__hpux__) || defined(__hpux)
 249 /* HP-UX counts st_blocks in 1024-byte units.
 250    This loses when mixing HP-UX and BSD filesystems with NFS.  */
 251 #  define ST_NBLOCKSIZE 1024
 252 # else /* !hpux */
 253 #  if defined(_AIX) && defined(_I386)
 254 /* AIX PS/2 counts st_blocks in 4K units.  */
 255 #   define ST_NBLOCKSIZE (4 * 1024)
 256 #  else /* not AIX PS/2 */
 257 #   if defined(_CRAY)
 258 #    define ST_NBLOCKS(statbuf) \
 259   (S_ISREG ((statbuf).st_mode) \
 260    || S_ISDIR ((statbuf).st_mode) \
 261    ? (statbuf).st_blocks * ST_BLKSIZE(statbuf)/ST_NBLOCKSIZE : 0)
 262 #   endif /* _CRAY */
 263 #  endif /* not AIX PS/2 */
 264 # endif /* !hpux */
 265 #endif /* HAVE_STRUCT_STAT_ST_BLOCKS */
 266
 267 #ifndef ST_NBLOCKS
 268 # define ST_NBLOCKS(statbuf) \
 269   (S_ISREG ((statbuf).st_mode) \
 270    || S_ISDIR ((statbuf).st_mode) \
 271    ? (statbuf).st_blocks : 0)
 272 #endif
 273
 274 #ifndef ST_NBLOCKSIZE
 275 # define ST_NBLOCKSIZE 512
 276 #endif
 277
 278 #include "sys2.h"