src/system.h

   1 /* system-dependent definitions for fileutils programs.
   2    Copyright (C) 89, 91, 92, 93, 94, 1996 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 #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 /* The following test is to work around the gross typo in
 183    systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
 184    is defined to 0, not 1.  */
 185 #if !EXIT_FAILURE
 186 # undef EXIT_FAILURE
 187 # define EXIT_FAILURE 1
 188 #endif
 189
 190 #ifndef EXIT_SUCCESS
 191 # define EXIT_SUCCESS 0
 192 #endif
 193
 194 #ifdef HAVE_FCNTL_H
 195 #include <fcntl.h>
 196 #else
 197 #include <sys/file.h>
 198 #endif
 199
 200 #ifndef SEEK_SET
 201 #define SEEK_SET 0
 202 #define SEEK_CUR 1
 203 #define SEEK_END 2
 204 #endif
 205 #ifndef F_OK
 206 #define F_OK 0
 207 #define X_OK 1
 208 #define W_OK 2
 209 #define R_OK 4
 210 #endif
 211
 212 #ifdef HAVE_DIRENT_H
 213 # include <dirent.h>
 214 # define NLENGTH(direct) (strlen((direct)->d_name))
 215 #else /* not HAVE_DIRENT_H */
 216 # define dirent direct
 217 # define NLENGTH(direct) ((direct)->d_namlen)
 218 # ifdef HAVE_SYS_NDIR_H
 219 #  include <sys/ndir.h>
 220 # endif /* HAVE_SYS_NDIR_H */
 221 # ifdef HAVE_SYS_DIR_H
 222 #  include <sys/dir.h>
 223 # endif /* HAVE_SYS_DIR_H */
 224 # ifdef HAVE_NDIR_H
 225 #  include <ndir.h>
 226 # endif /* HAVE_NDIR_H */
 227 #endif /* HAVE_DIRENT_H */
 228
 229 #ifdef CLOSEDIR_VOID
 230 /* Fake a return value. */
 231 #define CLOSEDIR(d) (closedir (d), 0)
 232 #else
 233 #define CLOSEDIR(d) closedir (d)
 234 #endif
 235
 236 /* Get or fake the disk device blocksize.
 237    Usually defined by sys/param.h (if at all).  */
 238 #ifndef DEV_BSIZE
 239 #ifdef BSIZE
 240 #define DEV_BSIZE BSIZE
 241 #else /* !BSIZE */
 242 #define DEV_BSIZE 4096
 243 #endif /* !BSIZE */
 244 #endif /* !DEV_BSIZE */
 245
 246 /* Extract or fake data from a `struct stat'.
 247    ST_BLKSIZE: Optimal I/O blocksize for the file, in bytes.
 248    ST_NBLOCKS: Number of 512-byte blocks in the file
 249    (including indirect blocks). */
 250 #ifndef HAVE_ST_BLOCKS
 251 # define ST_BLKSIZE(statbuf) DEV_BSIZE
 252 # if defined(_POSIX_SOURCE) || !defined(BSIZE) /* fileblocks.c uses BSIZE.  */
 253 #  define ST_NBLOCKS(statbuf) (((statbuf).st_size + 512 - 1) / 512)
 254 # else /* !_POSIX_SOURCE && BSIZE */
 255 #  define ST_NBLOCKS(statbuf) (st_blocks ((statbuf).st_size))
 256 # endif /* !_POSIX_SOURCE && BSIZE */
 257 #else /* HAVE_ST_BLOCKS */
 258 /* Some systems, like Sequents, return st_blksize of 0 on pipes. */
 259 # define ST_BLKSIZE(statbuf) ((statbuf).st_blksize > 0 \
 260                                ? (statbuf).st_blksize : DEV_BSIZE)
 261 # if defined(hpux) || defined(__hpux__) || defined(__hpux)
 262 /* HP-UX counts st_blocks in 1024-byte units.
 263    This loses when mixing HP-UX and BSD filesystems with NFS.  */
 264 #  define ST_NBLOCKS(statbuf) ((statbuf).st_blocks * 2)
 265 # else /* !hpux */
 266 #  if defined(_AIX) && defined(_I386)
 267 /* AIX PS/2 counts st_blocks in 4K units.  */
 268 #    define ST_NBLOCKS(statbuf) ((statbuf).st_blocks * 8)
 269 #  else /* not AIX PS/2 */
 270 #    define ST_NBLOCKS(statbuf) ((statbuf).st_blocks)
 271 #  endif /* not AIX PS/2 */
 272 # endif /* !hpux */
 273 #endif /* HAVE_ST_BLOCKS */
 274
 275 /* Convert B 512-byte blocks to kilobytes if K is nonzero,
 276    otherwise return it unchanged. */
 277 #define convert_blocks(b, k) ((k) ? ((b) + 1) / 2 : (b))
 278
 279 #ifndef RETSIGTYPE
 280 #define RETSIGTYPE void
 281 #endif
 282
 283 #ifdef __GNUC__
 284 # undef alloca
 285 # define alloca __builtin_alloca
 286 #else
 287 # ifdef HAVE_ALLOCA_H
 288 #  include <alloca.h>
 289 # else
 290 #  ifndef _AIX
 291 /* AIX alloca decl has to be the first thing in the file, bletch! */
 292 char *alloca ();
 293 #  endif
 294 # endif
 295 #endif
 296
 297 #include <ctype.h>
 298
 299 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
 300 #define IN_CTYPE_DOMAIN(c) 1
 301 #else
 302 #define IN_CTYPE_DOMAIN(c) isascii(c)
 303 #endif
 304
 305 #ifdef isblank
 306 #define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
 307 #else
 308 #define ISBLANK(c) ((c) == ' ' || (c) == '\t')
 309 #endif
 310 #ifdef isgraph
 311 #define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
 312 #else
 313 #define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
 314 #endif
 315
 316 #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
 317 #define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
 318 #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
 319 #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
 320 #define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c))
 321 #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
 322 #define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c))
 323 #define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
 324 #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
 325 #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
 326
 327 #ifndef __P
 328 #if defined (__GNUC__) || (defined (__STDC__) && __STDC__)
 329 #define __P(args) args
 330 #else
 331 #define __P(args) ()
 332 #endif  /* GCC.  */
 333 #endif  /* Not __P.  */
 334
 335 /* Take care of NLS matters.  */
 336
 337 #if HAVE_LOCALE_H
 338 # include <locale.h>
 339 #endif
 340 #if !HAVE_SETLOCALE
 341 # define setlocale(Category, Locale) /* empty */
 342 #endif
 343
 344 #if ENABLE_NLS
 345 # include <libintl.h>
 346 # define _(Text) gettext (Text)
 347 #else
 348 # define bindtextdomain(Domain, Directory) /* empty */
 349 # define textdomain(Domain) /* empty */
 350 # define _(Text) Text
 351 #endif
 352
 353 #define STREQ(a,b) (strcmp((a), (b)) == 0)