src/system.h

   1 /* system-dependent definitions for fileutils, textutils, and sh-utils packages.
   2    Copyright (C) 89, 91, 92, 93, 94, 96, 97, 1998 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 #ifdef STAT_MACROS_BROKEN
  23 # undef S_ISBLK
  24 # undef S_ISCHR
  25 # undef S_ISDIR
  26 # undef S_ISFIFO
  27 # undef S_ISLNK
  28 # undef S_ISMPB
  29 # undef S_ISMPC
  30 # undef S_ISNWK
  31 # undef S_ISREG
  32 # undef S_ISSOCK
  33 #endif /* STAT_MACROS_BROKEN.  */
  34
  35 #ifndef S_IFMT
  36 # define S_IFMT 0170000
  37 #endif
  38 #if !defined(S_ISBLK) && defined(S_IFBLK)
  39 # define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
  40 #endif
  41 #if !defined(S_ISCHR) && defined(S_IFCHR)
  42 # define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
  43 #endif
  44 #if !defined(S_ISDIR) && defined(S_IFDIR)
  45 # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
  46 #endif
  47 #if !defined(S_ISREG) && defined(S_IFREG)
  48 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
  49 #endif
  50 #if !defined(S_ISFIFO) && defined(S_IFIFO)
  51 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
  52 #endif
  53 #if !defined(S_ISLNK) && defined(S_IFLNK)
  54 # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
  55 #endif
  56 #if !defined(S_ISSOCK) && defined(S_IFSOCK)
  57 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
  58 #endif
  59 #if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
  60 # define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
  61 # define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
  62 #endif
  63 #if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
  64 # define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
  65 #endif
  66
  67 #ifndef S_IEXEC
  68 # define S_IEXEC S_IXUSR
  69 #endif
  70
  71 #ifndef S_IXUSR
  72 # define S_IXUSR S_IEXEC
  73 #endif
  74 #ifndef S_IXGRP
  75 # define S_IXGRP (S_IEXEC >> 3)
  76 #endif
  77 #ifndef S_IXOTH
  78 # define S_IXOTH (S_IEXEC >> 6)
  79 #endif
  80 #ifndef S_IXUGO
  81 # define S_IXUGO (S_IXUSR | S_IXGRP | S_IXOTH)
  82 #endif
  83
  84 #ifdef ST_MTIM_NSEC
  85 # define ST_TIME_CMP_NS(a, b, ns) ((a).ns < (b).ns ? -1 : (a).ns > (b).ns)
  86 #else
  87 # define ST_TIME_CMP_NS(a, b, ns) 0
  88 #endif
  89 #define ST_TIME_CMP(a, b, s, ns) \
  90   ((a).s < (b).s ? -1 : (a).s > (b).s ? 1 : ST_TIME_CMP_NS(a, b, ns))
  91 #define ATIME_CMP(a, b) ST_TIME_CMP (a, b, st_atime, st_atim.ST_MTIM_NSEC)
  92 #define CTIME_CMP(a, b) ST_TIME_CMP (a, b, st_ctime, st_ctim.ST_MTIM_NSEC)
  93 #define MTIME_CMP(a, b) ST_TIME_CMP (a, b, st_mtime, st_mtim.ST_MTIM_NSEC)
  94
  95 #if !defined(HAVE_MKFIFO)
  96 # define mkfifo(path, mode) (mknod ((path), (mode) | S_IFIFO, 0))
  97 #endif
  98
  99 #ifdef HAVE_SYS_PARAM_H
 100 # include <sys/param.h>
 101 #endif
 102
 103 /* <unistd.h> should be included before any preprocessor test
 104    of _POSIX_VERSION.  */
 105 #ifdef HAVE_UNISTD_H
 106 # include <unistd.h>
 107 #endif
 108
 109 #ifndef STDIN_FILENO
 110 # define STDIN_FILENO 0
 111 #endif
 112
 113 #ifndef STDOUT_FILENO
 114 # define STDOUT_FILENO 1
 115 #endif
 116
 117 #ifndef STDERR_FILENO
 118 # define STDERR_FILENO 2
 119 #endif
 120
 121
 122 #if HAVE_LIMITS_H
 123 /* limits.h must come before pathmax.h because limits.h on some systems
 124    undefs PATH_MAX, whereas pathmax.h sets PATH_MAX.  */
 125 # include <limits.h>
 126 #endif
 127
 128 #ifndef CHAR_BIT
 129 # define CHAR_BIT 8
 130 #endif
 131
 132 /* The extra casts work around common compiler bugs,
 133    e.g. Cray C 5.0.3.0 when t == time_t.  */
 134 #define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 135 #define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
 136                               ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
 137 #define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
 138
 139 #ifndef CHAR_MIN
 140 # define CHAR_MIN TYPE_MINIMUM (char)
 141 #endif
 142
 143 #ifndef CHAR_MAX
 144 # define CHAR_MAX TYPE_MAXIMUM (char)
 145 #endif
 146
 147 #ifndef UCHAR_MAX
 148 # define UCHAR_MAX TYPE_MAXIMUM (unsigned char)
 149 #endif
 150
 151 #ifndef SHRT_MIN
 152 # define SHRT_MIN TYPE_MINIMUM (short int)
 153 #endif
 154
 155 #ifndef SHRT_MAX
 156 # define SHRT_MAX TYPE_MAXIMUM (short int)
 157 #endif
 158
 159 #ifndef INT_MAX
 160 # define INT_MAX TYPE_MAXIMUM (int)
 161 #endif
 162
 163 #ifndef UINT_MAX
 164 # define UINT_MAX TYPE_MAXIMUM (unsigned int)
 165 #endif
 166
 167 #ifndef LONG_MAX
 168 # define LONG_MAX TYPE_MAXIMUM (long)
 169 #endif
 170
 171 #ifndef ULONG_MAX
 172 # define ULONG_MAX TYPE_MAXIMUM (unsigned long)
 173 #endif
 174
 175 #include "pathmax.h"
 176
 177 #ifdef TM_IN_SYS_TIME
 178 # include <sys/time.h>
 179 #else
 180 # include <time.h>
 181 #endif
 182
 183 /* Since major is a function on SVR4, we can't use `ifndef major'.  */
 184 #ifdef MAJOR_IN_MKDEV
 185 # include <sys/mkdev.h>
 186 # define HAVE_MAJOR
 187 #endif
 188 #ifdef MAJOR_IN_SYSMACROS
 189 # include <sys/sysmacros.h>
 190 # define HAVE_MAJOR
 191 #endif
 192 #ifdef major                    /* Might be defined in sys/types.h.  */
 193 # define HAVE_MAJOR
 194 #endif
 195
 196 #ifndef HAVE_MAJOR
 197 # define major(dev)  (((dev) >> 8) & 0xff)
 198 # define minor(dev)  ((dev) & 0xff)
 199 # define makedev(maj, min)  (((maj) << 8) | (min))
 200 #endif
 201 #undef HAVE_MAJOR
 202
 203 #ifdef HAVE_UTIME_H
 204 # include <utime.h>
 205 #endif
 206
 207 /* Some systems (even some that do have <utime.h>) don't declare this
 208    structure anywhere.  */
 209 #ifndef HAVE_STRUCT_UTIMBUF
 210 struct utimbuf
 211 {
 212   long actime;
 213   long modtime;
 214 };
 215 #endif
 216
 217 /* Don't use bcopy!  Use memmove if source and destination may overlap,
 218    memcpy otherwise.  */
 219
 220 #ifdef HAVE_STRING_H
 221 # if !STDC_HEADERS && HAVE_MEMORY_H
 222 #  include <memory.h>
 223 # endif
 224 # include <string.h>
 225 #else
 226 # include <strings.h>
 227 #endif
 228
 229 #include <errno.h>
 230 #ifndef errno
 231 extern int errno;
 232 #endif
 233
 234 #if HAVE_STDLIB_H
 235 # define getopt system_getopt
 236 # include <stdlib.h>
 237 # undef getopt
 238 #endif
 239
 240 /* The following test is to work around the gross typo in
 241    systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
 242    is defined to 0, not 1.  */
 243 #if !EXIT_FAILURE
 244 # undef EXIT_FAILURE
 245 # define EXIT_FAILURE 1
 246 #endif
 247
 248 #ifndef EXIT_SUCCESS
 249 # define EXIT_SUCCESS 0
 250 #endif
 251
 252 #ifdef HAVE_FCNTL_H
 253 # include <fcntl.h>
 254 #else
 255 # include <sys/file.h>
 256 #endif
 257
 258 #if !defined (SEEK_SET)
 259 # define SEEK_SET 0
 260 # define SEEK_CUR 1
 261 # define SEEK_END 2
 262 #endif
 263 #ifndef F_OK
 264 # define F_OK 0
 265 # define X_OK 1
 266 # define W_OK 2
 267 # define R_OK 4
 268 #endif
 269
 270 #ifdef HAVE_DIRENT_H
 271 # include <dirent.h>
 272 # define NLENGTH(direct) (strlen((direct)->d_name))
 273 #else /* not HAVE_DIRENT_H */
 274 # define dirent direct
 275 # define NLENGTH(direct) ((direct)->d_namlen)
 276 # ifdef HAVE_SYS_NDIR_H
 277 #  include <sys/ndir.h>
 278 # endif /* HAVE_SYS_NDIR_H */
 279 # ifdef HAVE_SYS_DIR_H
 280 #  include <sys/dir.h>
 281 # endif /* HAVE_SYS_DIR_H */
 282 # ifdef HAVE_NDIR_H
 283 #  include <ndir.h>
 284 # endif /* HAVE_NDIR_H */
 285 #endif /* HAVE_DIRENT_H */
 286
 287 #ifdef CLOSEDIR_VOID
 288 /* Fake a return value. */
 289 # define CLOSEDIR(d) (closedir (d), 0)
 290 #else
 291 # define CLOSEDIR(d) closedir (d)
 292 #endif
 293
 294 /* Get or fake the disk device blocksize.
 295    Usually defined by sys/param.h (if at all).  */
 296 #ifndef DEV_BSIZE
 297 # ifdef BSIZE
 298 #  define DEV_BSIZE BSIZE
 299 # else /* !BSIZE */
 300 #  define DEV_BSIZE 4096
 301 # endif /* !BSIZE */
 302 #endif /* !DEV_BSIZE */
 303
 304 /* Extract or fake data from a `struct stat'.
 305    ST_BLKSIZE: Preferred I/O blocksize for the file, in bytes.
 306    ST_NBLOCKS: Number of blocks in the file, including indirect blocks.
 307    ST_NBLOCKSIZE: Size of blocks used when calculating ST_NBLOCKS.  */
 308 #ifndef HAVE_ST_BLOCKS
 309 # define ST_BLKSIZE(statbuf) DEV_BSIZE
 310 # if defined(_POSIX_SOURCE) || !defined(BSIZE) /* fileblocks.c uses BSIZE.  */
 311 #  define ST_NBLOCKS(statbuf) ((statbuf).st_size / ST_NBLOCKSIZE + ((statbuf).st_size % ST_NBLOCKSIZE != 0))
 312 # else /* !_POSIX_SOURCE && BSIZE */
 313 #  define ST_NBLOCKS(statbuf) (st_blocks ((statbuf).st_size))
 314 # endif /* !_POSIX_SOURCE && BSIZE */
 315 #else /* HAVE_ST_BLOCKS */
 316 /* Some systems, like Sequents, return st_blksize of 0 on pipes. */
 317 # define ST_BLKSIZE(statbuf) ((statbuf).st_blksize > 0 \
 318                                ? (statbuf).st_blksize : DEV_BSIZE)
 319 # if defined(hpux) || defined(__hpux__) || defined(__hpux)
 320 /* HP-UX counts st_blocks in 1024-byte units.
 321    This loses when mixing HP-UX and BSD filesystems with NFS.  */
 322 #  define ST_NBLOCKSIZE 1024
 323 # else /* !hpux */
 324 #  if defined(_AIX) && defined(_I386)
 325 /* AIX PS/2 counts st_blocks in 4K units.  */
 326 #   define ST_NBLOCKSIZE (4 * 1024)
 327 #  else /* not AIX PS/2 */
 328 #   if defined(_CRAY)
 329 #    define ST_NBLOCKS(statbuf) ((statbuf).st_blocks * ST_BLKSIZE(statbuf)/ST_NBLOCKSIZE)
 330 #   endif /* _CRAY */
 331 #  endif /* not AIX PS/2 */
 332 # endif /* !hpux */
 333 #endif /* HAVE_ST_BLOCKS */
 334
 335 #ifndef ST_NBLOCKS
 336 # define ST_NBLOCKS(statbuf) ((statbuf).st_blocks)
 337 #endif
 338
 339 #ifndef ST_NBLOCKSIZE
 340 # define ST_NBLOCKSIZE 512
 341 #endif
 342
 343 #include "sys2.h"