2 Copyright (C) 1995 Free Software Foundation, Inc.
4 This file is part of XEmacs.
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Synched up with: Not really in FSF. */
23 #ifndef INCLUDED_sysfile_h_
24 #define INCLUDED_sysfile_h_
30 #include <sys/errno.h> /* <errno.h> does not always imply this */
37 #ifndef INCLUDED_FCNTL
38 # define INCLUDED_FCNTL
40 #endif /* INCLUDED_FCNTL */
42 /* Load sys/types.h if not already loaded.
43 In some systems loading it twice is suicidal. */
45 #include <sys/types.h> /* some typedefs are used in sys/file.h */
49 #include <sys/param.h>
51 #if defined (NeXT) || defined(__CYGWIN32__)
52 /* what is needed from here? Do others need it too?
53 O_BINARY is in here under cygwin. */
54 # include <sys/fcntl.h>
63 #define STDIN_FILENO 0
64 #define STDOUT_FILENO 1
65 #define STDERR_FILENO 2
80 /* file opening defaults */
83 #define OPEN_BINARY O_BINARY
85 #define OPEN_BINARY (0)
91 #define OPEN_TEXT O_TEXT
99 #define CREAT_MODE (S_IREAD | S_IWRITE)
101 #define CREAT_MODE (0666)
107 #define READ_TEXT "rt"
109 #define READ_TEXT "r"
115 #define READ_BINARY "rb"
117 #define READ_BINARY "r"
123 #define WRITE_BINARY "wb"
125 #define WRITE_BINARY "w"
131 #define O_NONBLOCK O_NDELAY
133 #define O_NONBLOCK 04000
137 /* if system does not have symbolic links, it does not have lstat.
138 In that case, use ordinary stat instead. */
146 # define S_IRUSR S_IREAD
148 # define S_IRUSR 00400
154 # define S_IWUSR S_IWRITE
156 # define S_IWUSR 00200
162 # define S_IXUSR S_IEXEC
164 # define S_IXUSR 00100
168 #ifdef STAT_MACROS_BROKEN
179 #endif /* STAT_MACROS_BROKEN. */
181 #if !defined(S_ISBLK) && defined(S_IFBLK)
182 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
184 #if !defined(S_ISCHR) && defined(S_IFCHR)
185 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
187 #if !defined(S_ISDIR) && defined(S_IFDIR)
188 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
190 #if !defined(S_ISREG) && defined(S_IFREG)
191 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
193 #if !defined(S_ISFIFO) && defined(S_IFIFO)
194 #define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
196 #if !defined(S_ISLNK) && defined(S_IFLNK)
197 #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
199 #if !defined(S_ISSOCK) && defined(S_IFSOCK)
200 #define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
202 #if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
203 #define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
204 #define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
206 #if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
207 #define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
210 /* Client .c files should simply use `PATH_MAX'. */
212 # if defined (_POSIX_PATH_MAX)
213 # define PATH_MAX _POSIX_PATH_MAX
214 # elif defined (MAXPATHLEN)
215 # define PATH_MAX MAXPATHLEN
217 # define PATH_MAX 1024
221 /* MAXPATHLEN is deprecated, but, as of this writing, still used. */
223 # define MAXPATHLEN 1024
231 # define FD_CLOEXEC 1
234 /* Emacs needs to use its own definitions of certain system calls on
235 some systems (like SunOS 4.1 and USG systems, where the read system
236 call is interruptible but Emacs expects it not to be; and under
237 MULE, where all filenames need to be converted to external format).
238 To do this, we #define read to be sys_read, which is defined in
239 sysdep.c. We first #undef read, in case some system file defines
240 read as a macro. sysdep.c doesn't encapsulate read, so the call to
241 read inside of sys_read will do the right thing.
243 DONT_ENCAPSULATE is used in files such as sysdep.c that want to
244 call the actual system calls rather than the encapsulated versions.
245 Those files can call sys_read to get the (possibly) encapsulated
248 IMPORTANT: the redefinition of the system call must occur *after* the
249 inclusion of any header files that declare or define the system call;
250 otherwise lots of unfriendly things can happen. This goes for all
251 encapsulated system calls.
253 We encapsulate the most common system calls here; we assume their
254 declarations are in one of the standard header files included above.
255 Other encapsulations are declared in the appropriate sys*.h file. */
257 #ifdef ENCAPSULATE_READ
258 ssize_t sys_read (int, void *, size_t);
260 #if defined (ENCAPSULATE_READ) && !defined (DONT_ENCAPSULATE)
262 # define read sys_read
264 #if !defined (ENCAPSULATE_READ) && defined (DONT_ENCAPSULATE)
265 # define sys_read read
268 #ifdef ENCAPSULATE_WRITE
269 ssize_t sys_write (int, const void *, size_t);
271 #if defined (ENCAPSULATE_WRITE) && !defined (DONT_ENCAPSULATE)
273 # define write sys_write
275 #if !defined (ENCAPSULATE_WRITE) && defined (DONT_ENCAPSULATE)
276 # define sys_write write
279 #ifdef ENCAPSULATE_OPEN
280 int sys_open (const char *, int, ...);
282 #if defined (ENCAPSULATE_OPEN) && !defined (DONT_ENCAPSULATE)
284 # define open sys_open
286 #if !defined (ENCAPSULATE_OPEN) && defined (DONT_ENCAPSULATE)
287 # define sys_open open
290 #ifdef ENCAPSULATE_CLOSE
293 #if defined (ENCAPSULATE_CLOSE) && !defined (DONT_ENCAPSULATE)
295 # define close sys_close
297 #if !defined (ENCAPSULATE_CLOSE) && defined (DONT_ENCAPSULATE)
298 # define sys_close close
301 /* Now the stdio versions ... */
303 #ifdef ENCAPSULATE_FREAD
304 size_t sys_fread (void *, size_t, size_t, FILE *);
306 #if defined (ENCAPSULATE_FREAD) && !defined (DONT_ENCAPSULATE)
308 # define fread sys_fread
310 #if !defined (ENCAPSULATE_FREAD) && defined (DONT_ENCAPSULATE)
311 # define sys_fread fread
314 #ifdef ENCAPSULATE_FWRITE
315 size_t sys_fwrite (const void *, size_t, size_t, FILE *);
317 #if defined (ENCAPSULATE_FWRITE) && !defined (DONT_ENCAPSULATE)
319 # define fwrite sys_fwrite
321 #if !defined (ENCAPSULATE_FWRITE) && defined (DONT_ENCAPSULATE)
322 # define sys_fwrite fwrite
325 #ifdef ENCAPSULATE_FOPEN
326 FILE *sys_fopen (const char *, const char *);
328 #if defined (ENCAPSULATE_FOPEN) && !defined (DONT_ENCAPSULATE)
330 # define fopen sys_fopen
332 #if !defined (ENCAPSULATE_FOPEN) && defined (DONT_ENCAPSULATE)
333 # define sys_fopen fopen
336 #ifdef ENCAPSULATE_FCLOSE
337 int sys_fclose (FILE *);
339 #if defined (ENCAPSULATE_FCLOSE) && !defined (DONT_ENCAPSULATE)
341 # define fclose sys_fclose
343 #if !defined (ENCAPSULATE_FCLOSE) && defined (DONT_ENCAPSULATE)
344 # define sys_fclose fclose
348 /* encapsulations: file-information calls */
350 #ifdef ENCAPSULATE_ACCESS
351 int sys_access (const char *path, int mode);
353 #if defined (ENCAPSULATE_ACCESS) && !defined (DONT_ENCAPSULATE)
355 # define access sys_access
357 #if !defined (ENCAPSULATE_ACCESS) && defined (DONT_ENCAPSULATE)
358 # define sys_access access
361 #ifdef ENCAPSULATE_EACCESS
362 int sys_eaccess (const char *path, int mode);
364 #if defined (ENCAPSULATE_EACCESS) && !defined (DONT_ENCAPSULATE)
366 # define eaccess sys_eaccess
368 #if !defined (ENCAPSULATE_EACCESS) && defined (DONT_ENCAPSULATE)
369 # define sys_eaccess eaccess
372 #ifdef ENCAPSULATE_LSTAT
373 int sys_lstat (const char *path, struct stat *buf);
375 #if defined (ENCAPSULATE_LSTAT) && !defined (DONT_ENCAPSULATE)
377 # define lstat sys_lstat
379 #if !defined (ENCAPSULATE_LSTAT) && defined (DONT_ENCAPSULATE)
380 # define sys_lstat lstat
383 #ifdef ENCAPSULATE_READLINK
384 int sys_readlink (const char *path, char *buf, size_t bufsiz);
386 #if defined (ENCAPSULATE_READLINK) && !defined (DONT_ENCAPSULATE)
388 # define readlink sys_readlink
390 #if !defined (ENCAPSULATE_READLINK) && defined (DONT_ENCAPSULATE)
391 # define sys_readlink readlink
394 #ifdef ENCAPSULATE_FSTAT
395 int sys_fstat (int fd, struct stat *buf);
397 #if defined (ENCAPSULATE_FSTAT) && !defined (DONT_ENCAPSULATE)
399 /* Need to use arguments to avoid messing with struct stat */
400 # define fstat(fd, buf) sys_fstat (fd, buf)
402 #if !defined (ENCAPSULATE_FSTAT) && defined (DONT_ENCAPSULATE)
403 # define sys_fstat fstat
406 #ifdef ENCAPSULATE_STAT
407 int sys_stat (const char *path, struct stat *buf);
409 #if defined (ENCAPSULATE_STAT) && !defined (DONT_ENCAPSULATE)
411 /* Need to use arguments to avoid messing with struct stat */
412 # define stat(path, buf) sys_stat (path, buf)
414 #if !defined (ENCAPSULATE_STAT) && defined (DONT_ENCAPSULATE)
415 # define sys_stat stat
418 /* encapsulations: file-manipulation calls */
420 #ifdef ENCAPSULATE_CHMOD
421 int sys_chmod (const char *path, mode_t mode);
423 #if defined (ENCAPSULATE_CHMOD) && !defined (DONT_ENCAPSULATE)
425 # define chmod sys_chmod
427 #if !defined (ENCAPSULATE_CHMOD) && defined (DONT_ENCAPSULATE)
428 # define sys_chmod chmod
431 #ifdef ENCAPSULATE_CREAT
432 int sys_creat (const char *path, mode_t mode);
434 #if defined (ENCAPSULATE_CREAT) && !defined (DONT_ENCAPSULATE)
436 # define creat sys_creat
438 #if !defined (ENCAPSULATE_CREAT) && defined (DONT_ENCAPSULATE)
439 # define sys_creat creat
442 #ifdef ENCAPSULATE_LINK
443 int sys_link (const char *existing, const char *new);
445 #if defined (ENCAPSULATE_LINK) && !defined (DONT_ENCAPSULATE)
447 # define link sys_link
449 #if !defined (ENCAPSULATE_LINK) && defined (DONT_ENCAPSULATE)
450 # define sys_link link
453 #ifdef ENCAPSULATE_RENAME
454 int sys_rename (const char *old, const char *new);
456 #if defined (ENCAPSULATE_RENAME) && !defined (DONT_ENCAPSULATE)
458 # define rename sys_rename
460 #if !defined (ENCAPSULATE_RENAME) && defined (DONT_ENCAPSULATE)
461 # define sys_rename rename
464 #ifdef ENCAPSULATE_SYMLINK
465 int sys_symlink (const char *name1, const char *name2);
467 #if defined (ENCAPSULATE_SYMLINK) && !defined (DONT_ENCAPSULATE)
469 # define symlink sys_symlink
471 #if !defined (ENCAPSULATE_SYMLINK) && defined (DONT_ENCAPSULATE)
472 # define sys_symlink symlink
475 #ifdef ENCAPSULATE_UNLINK
476 int sys_unlink (const char *path);
478 #if defined (ENCAPSULATE_UNLINK) && !defined (DONT_ENCAPSULATE)
480 # define unlink sys_unlink
482 #if !defined (ENCAPSULATE_UNLINK) && defined (DONT_ENCAPSULATE)
483 # define sys_unlink unlink
486 #ifdef ENCAPSULATE_EXECVP
487 int sys_execvp (const char *, char * const *);
489 #if defined (ENCAPSULATE_EXECVP) && !defined (DONT_ENCAPSULATE)
491 # define execvp sys_execvp
493 #if !defined (ENCAPSULATE_EXECVP) && defined (DONT_ENCAPSULATE)
494 # define sys_execvp execvp
497 #endif /* INCLUDED_sysfile_h_ */