2 Copyright (C) 1995 Free Software Foundation, Inc.
4 This file is part of SXEmacs
6 SXEmacs is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 SXEmacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* Synched up with: Not really in FSF. */
22 #ifndef INCLUDED_sysfile_h_
23 #define INCLUDED_sysfile_h_
27 #include <sys/errno.h> /* <errno.h> does not always imply this */
33 #ifndef INCLUDED_FCNTL
34 # define INCLUDED_FCNTL
36 #endif /* INCLUDED_FCNTL */
38 /* Load sys/types.h if not already loaded.
39 In some systems loading it twice is suicidal. */
41 #include <sys/types.h> /* some typedefs are used in sys/file.h */
53 #include <sys/param.h>
56 /* what is needed from here? Do others need it too? */
57 # include <sys/fcntl.h>
61 #define STDIN_FILENO 0
62 #define STDOUT_FILENO 1
63 #define STDERR_FILENO 2
78 /* file opening defaults */
81 #define OPEN_BINARY O_BINARY
83 #define OPEN_BINARY (0)
89 #define OPEN_TEXT O_TEXT
96 #define CREAT_MODE (0666)
101 #define READ_TEXT "rt"
103 #define READ_TEXT "r"
109 #define READ_BINARY "rb"
111 #define READ_BINARY "r"
115 #ifndef READ_PLUS_TEXT
117 #define READ_PLUS_TEXT "r+t"
119 #define READ_PLUS_TEXT "r+"
123 #ifndef READ_PLUS_BINARY
125 #define READ_PLUS_BINARY "r+b"
127 #define READ_PLUS_BINARY "r+"
133 #define WRITE_TEXT "wt"
135 #define WRITE_TEXT "w"
141 #define WRITE_BINARY "wb"
143 #define WRITE_BINARY "w"
149 #define O_NONBLOCK O_NDELAY
151 #define O_NONBLOCK 04000
155 /* if system does not have symbolic links, it does not have lstat.
156 In that case, use ordinary stat instead. */
159 #define lstat sxemacs_stat
164 # define S_IRUSR S_IREAD
166 # define S_IRUSR 00400
172 # define S_IWUSR S_IWRITE
174 # define S_IWUSR 00200
180 # define S_IXUSR S_IEXEC
182 # define S_IXUSR 00100
186 #ifdef STAT_MACROS_BROKEN
197 #endif /* STAT_MACROS_BROKEN. */
199 #if !defined(S_ISBLK) && defined(S_IFBLK)
200 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
202 #if !defined(S_ISCHR) && defined(S_IFCHR)
203 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
205 #if !defined(S_ISDIR) && defined(S_IFDIR)
206 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
208 #if !defined(S_ISREG) && defined(S_IFREG)
209 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
211 #if !defined(S_ISFIFO) && defined(S_IFIFO)
212 #define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
214 #if !defined(S_ISLNK) && defined(S_IFLNK)
215 #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
217 #if !defined(S_ISSOCK) && defined(S_IFSOCK)
218 #define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
220 #if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
221 #define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
222 #define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
224 #if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
225 #define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
228 /* Client .c files should simply use `PATH_MAX'. */
230 # if defined (_POSIX_PATH_MAX)
231 # define PATH_MAX _POSIX_PATH_MAX
232 # elif defined (MAXPATHLEN)
233 # define PATH_MAX MAXPATHLEN
235 # define PATH_MAX 1024
239 /* MAXPATHLEN is deprecated, but, as of this writing, still used. */
241 # define MAXPATHLEN 1024
244 /* The following definitions are needed under Windows, at least */
262 # define FD_CLOEXEC 1
265 /* Emacs needs to use its own definitions of certain system calls on
266 some systems (like SunOS 4.1 and USG systems, where the read system
267 call is interruptible but Emacs expects it not to be; and under
268 MULE, where all filenames need to be converted to external format).
269 To do this, we #define read to be sys_read, which is defined in
270 sysdep.c. We first #undef read, in case some system file defines
271 read as a macro. sysdep.c doesn't encapsulate read, so the call to
272 read inside of sys_read will do the right thing.
274 DONT_ENCAPSULATE is used in files such as sysdep.c that want to
275 call the actual system calls rather than the encapsulated versions.
276 Those files can call sys_read to get the (possibly) encapsulated
279 IMPORTANT: the redefinition of the system call must occur *after* the
280 inclusion of any header files that declare or define the system call;
281 otherwise lots of unfriendly things can happen. This goes for all
282 encapsulated system calls.
284 We encapsulate the most common system calls here; we assume their
285 declarations are in one of the standard header files included above.
286 Other encapsulations are declared in the appropriate sys*.h file. */
288 #ifdef ENCAPSULATE_READ
289 ssize_t sys_read(int, void *, size_t);
291 #if defined (ENCAPSULATE_READ) && !defined (DONT_ENCAPSULATE)
293 # define read sys_read
295 #if !defined (ENCAPSULATE_READ) && defined (DONT_ENCAPSULATE)
296 # define sys_read read
299 #ifdef ENCAPSULATE_WRITE
300 ssize_t sys_write(int, const void *, size_t);
302 #if defined (ENCAPSULATE_WRITE) && !defined (DONT_ENCAPSULATE)
304 # define write sys_write
306 #if !defined (ENCAPSULATE_WRITE) && defined (DONT_ENCAPSULATE)
307 # define sys_write write
310 #ifdef ENCAPSULATE_OPEN
311 int sys_open(const char *, int, ...);
313 #if defined (ENCAPSULATE_OPEN) && !defined (DONT_ENCAPSULATE)
315 # define open sys_open
317 #if !defined (ENCAPSULATE_OPEN) && defined (DONT_ENCAPSULATE)
318 # define sys_open open
321 #ifdef ENCAPSULATE_CLOSE
324 #if defined (ENCAPSULATE_CLOSE) && !defined (DONT_ENCAPSULATE)
326 # define close sys_close
328 #if !defined (ENCAPSULATE_CLOSE) && defined (DONT_ENCAPSULATE)
329 # define sys_close close
332 /* Now the stdio versions ... */
334 #ifdef ENCAPSULATE_FREAD
335 size_t sys_fread(void *, size_t, size_t, FILE *);
337 #if defined (ENCAPSULATE_FREAD) && !defined (DONT_ENCAPSULATE)
339 # define fread sys_fread
341 #if !defined (ENCAPSULATE_FREAD) && defined (DONT_ENCAPSULATE)
342 # define sys_fread fread
345 #ifdef ENCAPSULATE_FWRITE
346 size_t sys_fwrite(const void *, size_t, size_t, FILE *);
348 #if defined (ENCAPSULATE_FWRITE) && !defined (DONT_ENCAPSULATE)
350 # define fwrite sys_fwrite
352 #if !defined (ENCAPSULATE_FWRITE) && defined (DONT_ENCAPSULATE)
353 # define sys_fwrite fwrite
356 #ifdef ENCAPSULATE_FOPEN
357 FILE *sys_fopen(const char *, const char *);
359 #if defined (ENCAPSULATE_FOPEN) && !defined (DONT_ENCAPSULATE)
361 # define fopen sys_fopen
363 #if !defined (ENCAPSULATE_FOPEN) && defined (DONT_ENCAPSULATE)
364 # define sys_fopen fopen
367 #ifdef ENCAPSULATE_FCLOSE
368 int sys_fclose(FILE *);
370 #if defined (ENCAPSULATE_FCLOSE) && !defined (DONT_ENCAPSULATE)
372 # define fclose sys_fclose
374 #if !defined (ENCAPSULATE_FCLOSE) && defined (DONT_ENCAPSULATE)
375 # define sys_fclose fclose
378 /* encapsulations: file-information calls */
380 #ifdef ENCAPSULATE_ACCESS
381 int sys_access(const char *path, int mode);
383 #if defined (ENCAPSULATE_ACCESS) && !defined (DONT_ENCAPSULATE)
385 # define access sys_access
387 #if !defined (ENCAPSULATE_ACCESS) && defined (DONT_ENCAPSULATE)
388 # define sys_access access
391 #ifdef ENCAPSULATE_EACCESS
392 int sys_eaccess(const char *path, int mode);
394 #if defined (ENCAPSULATE_EACCESS) && !defined (DONT_ENCAPSULATE)
396 # define eaccess sys_eaccess
398 #if !defined (ENCAPSULATE_EACCESS) && defined (DONT_ENCAPSULATE)
399 # define sys_eaccess eaccess
402 #ifdef ENCAPSULATE_LSTAT
403 int sys_lstat(const char *path, struct stat *buf);
405 #if defined (ENCAPSULATE_LSTAT) && !defined (DONT_ENCAPSULATE)
407 # define lstat sys_lstat
409 #if !defined (ENCAPSULATE_LSTAT) && defined (DONT_ENCAPSULATE)
410 # define sys_lstat lstat
413 #ifdef ENCAPSULATE_READLINK
414 int sys_readlink(const char *path, char *buf, size_t bufsiz);
416 #if defined (ENCAPSULATE_READLINK) && !defined (DONT_ENCAPSULATE)
418 # define readlink sys_readlink
420 #if !defined (ENCAPSULATE_READLINK) && defined (DONT_ENCAPSULATE)
421 # define sys_readlink readlink
424 #ifdef ENCAPSULATE_FSTAT
425 int sys_fstat(int fd, struct stat *buf);
427 #if defined (ENCAPSULATE_FSTAT) && !defined (DONT_ENCAPSULATE)
429 # define fstat sys_fstat
431 #if !defined (ENCAPSULATE_FSTAT) && defined (DONT_ENCAPSULATE)
432 # define sys_fstat fstat
435 int sxemacs_stat(const char *path, struct stat *buf);
437 /* encapsulations: file-manipulation calls */
439 #ifdef ENCAPSULATE_CHMOD
440 int sys_chmod(const char *path, mode_t mode);
442 #if defined (ENCAPSULATE_CHMOD) && !defined (DONT_ENCAPSULATE)
444 # define chmod sys_chmod
446 #if !defined (ENCAPSULATE_CHMOD) && defined (DONT_ENCAPSULATE)
447 # define sys_chmod chmod
450 #ifdef ENCAPSULATE_CREAT
451 int sys_creat(const char *path, mode_t mode);
453 #if defined (ENCAPSULATE_CREAT) && !defined (DONT_ENCAPSULATE)
455 # define creat sys_creat
457 #if !defined (ENCAPSULATE_CREAT) && defined (DONT_ENCAPSULATE)
458 # define sys_creat creat
461 #ifdef ENCAPSULATE_LINK
462 int sys_link(const char *existing, const char *new);
464 #if defined (ENCAPSULATE_LINK) && !defined (DONT_ENCAPSULATE)
466 # define link sys_link
468 #if !defined (ENCAPSULATE_LINK) && defined (DONT_ENCAPSULATE)
469 # define sys_link link
472 #ifdef ENCAPSULATE_RENAME
473 int sys_rename(const char *old, const char *new);
475 #if defined (ENCAPSULATE_RENAME) && !defined (DONT_ENCAPSULATE)
477 # define rename sys_rename
479 #if !defined (ENCAPSULATE_RENAME) && defined (DONT_ENCAPSULATE)
480 # define sys_rename rename
483 #ifdef ENCAPSULATE_SYMLINK
484 int sys_symlink(const char *name1, const char *name2);
486 #if defined (ENCAPSULATE_SYMLINK) && !defined (DONT_ENCAPSULATE)
488 # define symlink sys_symlink
490 #if !defined (ENCAPSULATE_SYMLINK) && defined (DONT_ENCAPSULATE)
491 # define sys_symlink symlink
494 #ifdef ENCAPSULATE_UNLINK
495 int sys_unlink(const char *path);
497 #if defined (ENCAPSULATE_UNLINK) && !defined (DONT_ENCAPSULATE)
499 # define unlink sys_unlink
501 #if !defined (ENCAPSULATE_UNLINK) && defined (DONT_ENCAPSULATE)
502 # define sys_unlink unlink
505 #ifdef ENCAPSULATE_EXECVP
506 int sys_execvp(const char *, char *const *);
508 #if defined (ENCAPSULATE_EXECVP) && !defined (DONT_ENCAPSULATE)
510 # define execvp sys_execvp
512 #if !defined (ENCAPSULATE_EXECVP) && defined (DONT_ENCAPSULATE)
513 # define sys_execvp execvp
516 /* How long can a source filename be in DOC (including "\037S" at the start
517 and "\n" at the end) ? */
518 #define DOC_MAX_FILENAME_LENGTH 2048
520 #endif /* INCLUDED_sysfile_h_ */