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 #else
 145 struct utimbuf
 146 {
 147   long actime;
 148   long modtime;
 149 };
 150 #endif
 151
 152 /* Don't use bcopy!  Use memmove if source and destination may overlap,
 153    memcpy otherwise.  */
 154
 155 #ifdef HAVE_STRING_H
 156 # if !STDC_HEADERS && HAVE_MEMORY_H
 157 #  include <memory.h>
 158 # endif
 159 # include <string.h>
 160 #else
 161 # include <strings.h>
 162 char *memchr ();
 163 #endif
 164
 165 #include <errno.h>
 166 #ifndef errno
 167 extern int errno;
 168 #endif
 169
 170 #ifdef STDC_HEADERS
 171 #define getopt system_getopt
 172 #include <stdlib.h>
 173 #undef getopt
 174 #else /* not STDC_HEADERS */
 175 char *getenv ();
 176 #endif /* STDC_HEADERS */
 177
 178 #ifdef HAVE_FCNTL_H
 179 #include <fcntl.h>
 180 #else
 181 #include <sys/file.h>
 182 #endif
 183
 184 #ifndef SEEK_SET
 185 #define SEEK_SET 0
 186 #define SEEK_CUR 1
 187 #define SEEK_END 2
 188 #endif
 189 #ifndef F_OK
 190 #define F_OK 0
 191 #define X_OK 1
 192 #define W_OK 2
 193 #define R_OK 4
 194 #endif
 195
 196 #ifdef HAVE_DIRENT_H
 197 # include <dirent.h>
 198 # define NLENGTH(direct) (strlen((direct)->d_name))
 199 #else /* not HAVE_DIRENT_H */
 200 # define dirent direct
 201 # define NLENGTH(direct) ((direct)->d_namlen)
 202 # ifdef HAVE_SYS_NDIR_H
 203 #  include <sys/ndir.h>
 204 # endif /* HAVE_SYS_NDIR_H */
 205 # ifdef HAVE_SYS_DIR_H
 206 #  include <sys/dir.h>
 207 # endif /* HAVE_SYS_DIR_H */
 208 # ifdef HAVE_NDIR_H
 209 #  include <ndir.h>
 210 # endif /* HAVE_NDIR_H */
 211 #endif /* HAVE_DIRENT_H */
 212
 213 #ifdef CLOSEDIR_VOID
 214 /* Fake a return value. */
 215 #define CLOSEDIR(d) (closedir (d), 0)
 216 #else
 217 #define CLOSEDIR(d) closedir (d)
 218 #endif
 219
 220 /* Get or fake the disk device blocksize.
 221    Usually defined by sys/param.h (if at all).  */
 222 #ifndef DEV_BSIZE
 223 #ifdef BSIZE
 224 #define DEV_BSIZE BSIZE
 225 #else /* !BSIZE */
 226 #define DEV_BSIZE 4096
 227 #endif /* !BSIZE */
 228 #endif /* !DEV_BSIZE */
 229
 230 /* Extract or fake data from a `struct stat'.
 231    ST_BLKSIZE: Optimal I/O blocksize for the file, in bytes.
 232    ST_NBLOCKS: Number of 512-byte blocks in the file
 233    (including indirect blocks). */
 234 #ifndef HAVE_ST_BLOCKS
 235 # define ST_BLKSIZE(statbuf) DEV_BSIZE
 236 # if defined(_POSIX_SOURCE) || !defined(BSIZE) /* fileblocks.c uses BSIZE.  */
 237 #  define ST_NBLOCKS(statbuf) (((statbuf).st_size + 512 - 1) / 512)
 238 # else /* !_POSIX_SOURCE && BSIZE */
 239 #  define ST_NBLOCKS(statbuf) (st_blocks ((statbuf).st_size))
 240 # endif /* !_POSIX_SOURCE && BSIZE */
 241 #else /* HAVE_ST_BLOCKS */
 242 /* Some systems, like Sequents, return st_blksize of 0 on pipes. */
 243 # define ST_BLKSIZE(statbuf) ((statbuf).st_blksize > 0 \
 244                                ? (statbuf).st_blksize : DEV_BSIZE)
 245 # if defined(hpux) || defined(__hpux__) || defined(__hpux)
 246 /* HP-UX counts st_blocks in 1024-byte units.
 247    This loses when mixing HP-UX and BSD filesystems with NFS.  */
 248 #  define ST_NBLOCKS(statbuf) ((statbuf).st_blocks * 2)
 249 # else /* !hpux */
 250 #  if defined(_AIX) && defined(_I386)
 251 /* AIX PS/2 counts st_blocks in 4K units.  */
 252 #    define ST_NBLOCKS(statbuf) ((statbuf).st_blocks * 8)
 253 #  else /* not AIX PS/2 */
 254 #    define ST_NBLOCKS(statbuf) ((statbuf).st_blocks)
 255 #  endif /* not AIX PS/2 */
 256 # endif /* !hpux */
 257 #endif /* HAVE_ST_BLOCKS */
 258
 259 /* Convert B 512-byte blocks to kilobytes if K is nonzero,
 260    otherwise return it unchanged. */
 261 #define convert_blocks(b, k) ((k) ? ((b) + 1) / 2 : (b))
 262
 263 #ifndef RETSIGTYPE
 264 #define RETSIGTYPE void
 265 #endif
 266
 267 #ifdef __GNUC__
 268 # undef alloca
 269 # define alloca __builtin_alloca
 270 #else
 271 # ifdef HAVE_ALLOCA_H
 272 #  include <alloca.h>
 273 # else
 274 #  ifndef _AIX
 275 /* AIX alloca decl has to be the first thing in the file, bletch! */
 276 char *alloca ();
 277 #  endif
 278 # endif
 279 #endif
 280
 281 #include <ctype.h>
 282
 283 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
 284 #define ISASCII(c) 1
 285 #else
 286 #define ISASCII(c) isascii(c)
 287 #endif
 288
 289 #ifdef isblank
 290 #define ISBLANK(c) (ISASCII (c) && isblank (c))
 291 #else
 292 #define ISBLANK(c) ((c) == ' ' || (c) == '\t')
 293 #endif
 294 #ifdef isgraph
 295 #define ISGRAPH(c) (ISASCII (c) && isgraph (c))
 296 #else
 297 #define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
 298 #endif
 299
 300 #define ISPRINT(c) (ISASCII (c) && isprint (c))
 301 #define ISDIGIT(c) (ISASCII (c) && isdigit (c))
 302 #define ISALNUM(c) (ISASCII (c) && isalnum (c))
 303 #define ISALPHA(c) (ISASCII (c) && isalpha (c))
 304 #define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
 305 #define ISLOWER(c) (ISASCII (c) && islower (c))
 306 #define ISPUNCT(c) (ISASCII (c) && ispunct (c))
 307 #define ISSPACE(c) (ISASCII (c) && isspace (c))
 308 #define ISUPPER(c) (ISASCII (c) && isupper (c))
 309 #define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))