src/system.h

   1 /* system-dependent definitions for fileutils programs.
   2    Copyright (C) 89, 91, 92, 93, 1994 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
  16    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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 #ifdef S_IEXEC
  72 #ifndef S_IXUSR
  73 #define S_IXUSR S_IEXEC
  74 #endif
  75 #ifndef S_IXGRP
  76 #define S_IXGRP (S_IEXEC >> 3)
  77 #endif
  78 #ifndef S_IXOTH
  79 #define S_IXOTH (S_IEXEC >> 6)
  80 #endif
  81 #endif /* S_IEXEC */
  82
  83 #if !defined(HAVE_MKFIFO)
  84 #define mkfifo(path, mode) (mknod ((path), (mode) | S_IFIFO, 0))
  85 #endif
  86
  87 #ifdef HAVE_SYS_PARAM_H
  88 #include <sys/param.h>
  89 #endif
  90
  91 /* <unistd.h> should be included before any preprocessor test
  92    of _POSIX_VERSION.  */
  93 #ifdef HAVE_UNISTD_H
  94 #include <unistd.h>
  95 #endif
  96
  97 #ifndef STDIN_FILENO
  98 #define STDIN_FILENO 0
  99 #endif
 100
 101 #ifndef STDOUT_FILENO
 102 #define STDOUT_FILENO 1
 103 #endif
 104
 105 #ifndef STDERR_FILENO
 106 #define STDERR_FILENO 2
 107 #endif
 108
 109 #include "pathmax.h"
 110
 111 /* FIXME: Don't use _POSIX_VERSION.  */
 112 #ifndef _POSIX_VERSION
 113 off_t lseek ();
 114 #endif
 115
 116 #ifdef TM_IN_SYS_TIME
 117 #include <sys/time.h>
 118 #else
 119 #include <time.h>
 120 #endif
 121
 122 /* Since major is a function on SVR4, we can't use `ifndef major'.  */
 123 #ifdef MAJOR_IN_MKDEV
 124 #include <sys/mkdev.h>
 125 #define HAVE_MAJOR
 126 #endif
 127 #ifdef MAJOR_IN_SYSMACROS
 128 #include <sys/sysmacros.h>
 129 #define HAVE_MAJOR
 130 #endif
 131 #ifdef major                    /* Might be defined in sys/types.h.  */
 132 #define HAVE_MAJOR
 133 #endif
 134
 135 #ifndef HAVE_MAJOR
 136 #define major(dev)  (((dev) >> 8) & 0xff)
 137 #define minor(dev)  ((dev) & 0xff)
 138 #define makedev(maj, min)  (((maj) << 8) | (min))
 139 #endif
 140 #undef HAVE_MAJOR
 141
 142 #ifdef HAVE_UTIME_H
 143 #include <utime.h>
 144 #endif
 145
 146 /* Some systems (even some that do have <utime.h>) don't declare this
 147    structure anywhere.  */
 148 #ifndef HAVE_STRUCT_UTIMBUF
 149 struct utimbuf
 150 {
 151   long actime;
 152   long modtime;
 153 };
 154 #endif
 155
 156 /* Don't use bcopy!  Use memmove if source and destination may overlap,
 157    memcpy otherwise.  */
 158
 159 #ifdef HAVE_STRING_H
 160 # if !STDC_HEADERS && HAVE_MEMORY_H
 161 #  include <memory.h>
 162 # endif
 163 # include <string.h>
 164 #else
 165 # include <strings.h>
 166 char *memchr ();
 167 #endif
 168
 169 #include <errno.h>
 170 #ifndef errno
 171 extern int errno;
 172 #endif
 173
 174 #ifdef STDC_HEADERS
 175 #define getopt system_getopt
 176 #include <stdlib.h>
 177 #undef getopt
 178 #else /* not STDC_HEADERS */
 179 char *getenv ();
 180 #endif /* STDC_HEADERS */
 181
 182 #ifdef HAVE_FCNTL_H
 183 #include <fcntl.h>
 184 #else
 185 #include <sys/file.h>
 186 #endif
 187
 188 #ifndef SEEK_SET
 189 #define SEEK_SET 0
 190 #define SEEK_CUR 1
 191 #define SEEK_END 2
 192 #endif
 193 #ifndef F_OK
 194 #define F_OK 0
 195 #define X_OK 1
 196 #define W_OK 2
 197 #define R_OK 4
 198 #endif
 199
 200 #ifdef HAVE_DIRENT_H
 201 # include <dirent.h>
 202 # define NLENGTH(direct) (strlen((direct)->d_name))
 203 #else /* not HAVE_DIRENT_H */
 204 # define dirent direct
 205 # define NLENGTH(direct) ((direct)->d_namlen)
 206 # ifdef HAVE_SYS_NDIR_H
 207 #  include <sys/ndir.h>
 208 # endif /* HAVE_SYS_NDIR_H */
 209 # ifdef HAVE_SYS_DIR_H
 210 #  include <sys/dir.h>
 211 # endif /* HAVE_SYS_DIR_H */
 212 # ifdef HAVE_NDIR_H
 213 #  include <ndir.h>
 214 # endif /* HAVE_NDIR_H */
 215 #endif /* HAVE_DIRENT_H */
 216
 217 #ifdef CLOSEDIR_VOID
 218 /* Fake a return value. */
 219 #define CLOSEDIR(d) (closedir (d), 0)
 220 #else
 221 #define CLOSEDIR(d) closedir (d)
 222 #endif
 223
 224 /* Get or fake the disk device blocksize.
 225    Usually defined by sys/param.h (if at all).  */
 226 #ifndef DEV_BSIZE
 227 #ifdef BSIZE
 228 #define DEV_BSIZE BSIZE
 229 #else /* !BSIZE */
 230 #define DEV_BSIZE 4096
 231 #endif /* !BSIZE */
 232 #endif /* !DEV_BSIZE */
 233
 234 /* Extract or fake data from a `struct stat'.
 235    ST_BLKSIZE: Optimal I/O blocksize for the file, in bytes.
 236    ST_NBLOCKS: Number of 512-byte blocks in the file
 237    (including indirect blocks). */
 238 #ifndef HAVE_ST_BLOCKS
 239 # define ST_BLKSIZE(statbuf) DEV_BSIZE
 240 # if defined(_POSIX_SOURCE) || !defined(BSIZE) /* fileblocks.c uses BSIZE.  */
 241 #  define ST_NBLOCKS(statbuf) (((statbuf).st_size + 512 - 1) / 512)
 242 # else /* !_POSIX_SOURCE && BSIZE */
 243 #  define ST_NBLOCKS(statbuf) (st_blocks ((statbuf).st_size))
 244 # endif /* !_POSIX_SOURCE && BSIZE */
 245 #else /* HAVE_ST_BLOCKS */
 246 /* Some systems, like Sequents, return st_blksize of 0 on pipes. */
 247 # define ST_BLKSIZE(statbuf) ((statbuf).st_blksize > 0 \
 248                                ? (statbuf).st_blksize : DEV_BSIZE)
 249 # if defined(hpux) || defined(__hpux__) || defined(__hpux)
 250 /* HP-UX counts st_blocks in 1024-byte units.
 251    This loses when mixing HP-UX and BSD filesystems with NFS.  */
 252 #  define ST_NBLOCKS(statbuf) ((statbuf).st_blocks * 2)
 253 # else /* !hpux */
 254 #  if defined(_AIX) && defined(_I386)
 255 /* AIX PS/2 counts st_blocks in 4K units.  */
 256 #    define ST_NBLOCKS(statbuf) ((statbuf).st_blocks * 8)
 257 #  else /* not AIX PS/2 */
 258 #    define ST_NBLOCKS(statbuf) ((statbuf).st_blocks)
 259 #  endif /* not AIX PS/2 */
 260 # endif /* !hpux */
 261 #endif /* HAVE_ST_BLOCKS */
 262
 263 /* Convert B 512-byte blocks to kilobytes if K is nonzero,
 264    otherwise return it unchanged. */
 265 #define convert_blocks(b, k) ((k) ? ((b) + 1) / 2 : (b))
 266
 267 #ifndef RETSIGTYPE
 268 #define RETSIGTYPE void
 269 #endif
 270
 271 #ifdef __GNUC__
 272 # undef alloca
 273 # define alloca __builtin_alloca
 274 #else
 275 # ifdef HAVE_ALLOCA_H
 276 #  include <alloca.h>
 277 # else
 278 #  ifndef _AIX
 279 /* AIX alloca decl has to be the first thing in the file, bletch! */
 280 char *alloca ();
 281 #  endif
 282 # endif
 283 #endif
 284
 285 #include <ctype.h>
 286
 287 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
 288 #define ISASCII(c) 1
 289 #else
 290 #define ISASCII(c) isascii(c)
 291 #endif
 292
 293 #ifdef isblank
 294 #define ISBLANK(c) (ISASCII (c) && isblank (c))
 295 #else
 296 #define ISBLANK(c) ((c) == ' ' || (c) == '\t')
 297 #endif
 298 #ifdef isgraph
 299 #define ISGRAPH(c) (ISASCII (c) && isgraph (c))
 300 #else
 301 #define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
 302 #endif
 303
 304 #define ISPRINT(c) (ISASCII (c) && isprint (c))
 305 #define ISDIGIT(c) (ISASCII (c) && isdigit (c))
 306 #define ISALNUM(c) (ISASCII (c) && isalnum (c))
 307 #define ISALPHA(c) (ISASCII (c) && isalpha (c))
 308 #define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
 309 #define ISLOWER(c) (ISASCII (c) && islower (c))
 310 #define ISPUNCT(c) (ISASCII (c) && ispunct (c))
 311 #define ISSPACE(c) (ISASCII (c) && isspace (c))
 312 #define ISUPPER(c) (ISASCII (c) && isupper (c))
 313 #define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
 314
 315 #ifndef __P
 316 #if defined (__GNUC__) || (defined (__STDC__) && __STDC__)
 317 #define __P(args) args
 318 #else
 319 #define __P(args) ()
 320 #endif  /* GCC.  */
 321 #endif  /* Not __P.  */
 322
 323 /* Take care of NLS matters.  */
 324
 325 #if HAVE_LOCALE_H
 326 # include <locale.h>
 327 #endif
 328 #if !HAVE_SETLOCALE
 329 # define setlocale(Category, Locale) /* empty */
 330 #endif
 331
 332 #if ENABLE_NLS
 333 # include <libintl.h>
 334 # define _(Text) gettext (Text)
 335 #else
 336 # define bindtextdomain(Domain, Directory) /* empty */
 337 # define textdomain(Domain) /* empty */
 338 # define _(Text) Text
 339 #endif