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9b36a80c LC |
1 | /* Substitute for and wrapper around <unistd.h>. |
2 | Copyright (C) 2003-2008 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 Lesser 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 Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public License | |
15 | along with this program; if not, write to the Free Software Foundation, | |
16 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
17 | ||
18 | #ifndef _GL_UNISTD_H | |
19 | ||
20 | #if __GNUC__ >= 3 | |
21 | @PRAGMA_SYSTEM_HEADER@ | |
22 | #endif | |
23 | ||
24 | /* The include_next requires a split double-inclusion guard. */ | |
25 | #if @HAVE_UNISTD_H@ | |
26 | # @INCLUDE_NEXT@ @NEXT_UNISTD_H@ | |
27 | #endif | |
28 | ||
29 | #ifndef _GL_UNISTD_H | |
30 | #define _GL_UNISTD_H | |
31 | ||
32 | /* mingw doesn't define the SEEK_* macros in <unistd.h>. */ | |
33 | #if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) | |
34 | # include <stdio.h> | |
35 | #endif | |
36 | ||
37 | /* mingw fails to declare _exit in <unistd.h>. */ | |
4a462e35 | 38 | /* mingw, BeOS, Haiku declare environ in <stdlib.h>, not in <unistd.h>. */ |
9b36a80c LC |
39 | #include <stdlib.h> |
40 | ||
41 | #if @GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@ | |
42 | /* Get ssize_t. */ | |
43 | # include <sys/types.h> | |
44 | #endif | |
45 | ||
46 | #if @GNULIB_GETHOSTNAME@ | |
47 | /* Get all possible declarations of gethostname(). */ | |
48 | # if @UNISTD_H_HAVE_WINSOCK2_H@ | |
49 | # include <winsock2.h> | |
50 | # if !defined _GL_SYS_SOCKET_H | |
51 | # undef socket | |
52 | # define socket socket_used_without_including_sys_socket_h | |
53 | # undef connect | |
54 | # define connect connect_used_without_including_sys_socket_h | |
55 | # undef accept | |
56 | # define accept accept_used_without_including_sys_socket_h | |
57 | # undef bind | |
58 | # define bind bind_used_without_including_sys_socket_h | |
59 | # undef getpeername | |
60 | # define getpeername getpeername_used_without_including_sys_socket_h | |
61 | # undef getsockname | |
62 | # define getsockname getsockname_used_without_including_sys_socket_h | |
63 | # undef getsockopt | |
64 | # define getsockopt getsockopt_used_without_including_sys_socket_h | |
65 | # undef listen | |
66 | # define listen listen_used_without_including_sys_socket_h | |
67 | # undef recv | |
68 | # define recv recv_used_without_including_sys_socket_h | |
69 | # undef send | |
70 | # define send send_used_without_including_sys_socket_h | |
71 | # undef recvfrom | |
72 | # define recvfrom recvfrom_used_without_including_sys_socket_h | |
73 | # undef sendto | |
74 | # define sendto sendto_used_without_including_sys_socket_h | |
75 | # undef setsockopt | |
76 | # define setsockopt setsockopt_used_without_including_sys_socket_h | |
77 | # undef shutdown | |
78 | # define shutdown shutdown_used_without_including_sys_socket_h | |
79 | # endif | |
80 | # if !defined _GL_SYS_SELECT_H | |
81 | # undef select | |
82 | # define select select_used_without_including_sys_select_h | |
83 | # endif | |
84 | # endif | |
85 | #endif | |
86 | ||
87 | /* The definition of GL_LINK_WARNING is copied here. */ | |
88 | ||
89 | ||
90 | /* Declare overridden functions. */ | |
91 | ||
92 | #ifdef __cplusplus | |
93 | extern "C" { | |
94 | #endif | |
95 | ||
96 | ||
97 | #if @GNULIB_CHOWN@ | |
98 | # if @REPLACE_CHOWN@ | |
99 | # ifndef REPLACE_CHOWN | |
100 | # define REPLACE_CHOWN 1 | |
101 | # endif | |
102 | # if REPLACE_CHOWN | |
103 | /* Change the owner of FILE to UID (if UID is not -1) and the group of FILE | |
104 | to GID (if GID is not -1). Follow symbolic links. | |
105 | Return 0 if successful, otherwise -1 and errno set. | |
106 | See the POSIX:2001 specification | |
107 | <http://www.opengroup.org/susv3xsh/chown.html>. */ | |
108 | # define chown rpl_chown | |
109 | extern int chown (const char *file, uid_t uid, gid_t gid); | |
110 | # endif | |
111 | # endif | |
112 | #elif defined GNULIB_POSIXCHECK | |
113 | # undef chown | |
114 | # define chown(f,u,g) \ | |
115 | (GL_LINK_WARNING ("chown fails to follow symlinks on some systems and " \ | |
116 | "doesn't treat a uid or gid of -1 on some systems - " \ | |
117 | "use gnulib module chown for portability"), \ | |
118 | chown (f, u, g)) | |
119 | #endif | |
120 | ||
121 | ||
122 | #if @GNULIB_CLOSE@ | |
123 | # if @UNISTD_H_HAVE_WINSOCK2_H@ | |
124 | /* Need a gnulib internal function. */ | |
125 | # define HAVE__GL_CLOSE_FD_MAYBE_SOCKET 1 | |
126 | # endif | |
127 | # if @REPLACE_CLOSE@ | |
128 | /* Automatically included by modules that need a replacement for close. */ | |
129 | # undef close | |
130 | # define close rpl_close | |
131 | extern int close (int); | |
132 | # endif | |
133 | #elif @UNISTD_H_HAVE_WINSOCK2_H@ | |
134 | # undef close | |
135 | # define close close_used_without_requesting_gnulib_module_close | |
136 | #elif defined GNULIB_POSIXCHECK | |
137 | # undef close | |
138 | # define close(f) \ | |
139 | (GL_LINK_WARNING ("close does not portably work on sockets - " \ | |
140 | "use gnulib module close for portability"), \ | |
141 | close (f)) | |
142 | #endif | |
143 | ||
144 | ||
145 | #if @GNULIB_DUP2@ | |
146 | # if !@HAVE_DUP2@ | |
147 | /* Copy the file descriptor OLDFD into file descriptor NEWFD. Do nothing if | |
148 | NEWFD = OLDFD, otherwise close NEWFD first if it is open. | |
149 | Return 0 if successful, otherwise -1 and errno set. | |
150 | See the POSIX:2001 specification | |
151 | <http://www.opengroup.org/susv3xsh/dup2.html>. */ | |
152 | extern int dup2 (int oldfd, int newfd); | |
153 | # endif | |
154 | #elif defined GNULIB_POSIXCHECK | |
155 | # undef dup2 | |
156 | # define dup2(o,n) \ | |
157 | (GL_LINK_WARNING ("dup2 is unportable - " \ | |
158 | "use gnulib module dup2 for portability"), \ | |
159 | dup2 (o, n)) | |
160 | #endif | |
161 | ||
162 | ||
163 | #if @GNULIB_ENVIRON@ | |
164 | # if !@HAVE_DECL_ENVIRON@ | |
165 | /* Set of environment variables and values. An array of strings of the form | |
166 | "VARIABLE=VALUE", terminated with a NULL. */ | |
167 | # if defined __APPLE__ && defined __MACH__ | |
168 | # include <crt_externs.h> | |
169 | # define environ (*_NSGetEnviron ()) | |
170 | # else | |
171 | extern char **environ; | |
172 | # endif | |
173 | # endif | |
174 | #elif defined GNULIB_POSIXCHECK | |
175 | # undef environ | |
176 | # define environ \ | |
177 | (GL_LINK_WARNING ("environ is unportable - " \ | |
178 | "use gnulib module environ for portability"), \ | |
179 | environ) | |
180 | #endif | |
181 | ||
182 | ||
183 | #if @GNULIB_EUIDACCESS@ | |
184 | # if !@HAVE_EUIDACCESS@ | |
185 | /* Like access(), except that is uses the effective user id and group id of | |
186 | the current process. */ | |
187 | extern int euidaccess (const char *filename, int mode); | |
188 | # endif | |
189 | #elif defined GNULIB_POSIXCHECK | |
190 | # undef euidaccess | |
191 | # define euidaccess(f,m) \ | |
192 | (GL_LINK_WARNING ("euidaccess is unportable - " \ | |
193 | "use gnulib module euidaccess for portability"), \ | |
194 | euidaccess (f, m)) | |
195 | #endif | |
196 | ||
197 | ||
198 | #if @GNULIB_FCHDIR@ | |
199 | # if @REPLACE_FCHDIR@ | |
200 | ||
201 | /* Change the process' current working directory to the directory on which | |
202 | the given file descriptor is open. | |
203 | Return 0 if successful, otherwise -1 and errno set. | |
204 | See the POSIX:2001 specification | |
205 | <http://www.opengroup.org/susv3xsh/fchdir.html>. */ | |
206 | extern int fchdir (int /*fd*/); | |
207 | ||
208 | # define dup rpl_dup | |
209 | extern int dup (int); | |
210 | # define dup2 rpl_dup2 | |
211 | extern int dup2 (int, int); | |
212 | ||
213 | # endif | |
214 | #elif defined GNULIB_POSIXCHECK | |
215 | # undef fchdir | |
216 | # define fchdir(f) \ | |
217 | (GL_LINK_WARNING ("fchdir is unportable - " \ | |
218 | "use gnulib module fchdir for portability"), \ | |
219 | fchdir (f)) | |
220 | #endif | |
221 | ||
222 | ||
223 | #if @GNULIB_FSYNC@ | |
224 | /* Synchronize changes to a file. | |
225 | Return 0 if successful, otherwise -1 and errno set. | |
226 | See POSIX:2001 specification | |
227 | <http://www.opengroup.org/susv3xsh/fsync.html>. */ | |
228 | # if !@HAVE_FSYNC@ | |
229 | extern int fsync (int fd); | |
230 | # endif | |
231 | #elif defined GNULIB_POSIXCHECK | |
232 | # undef fsync | |
233 | # define fsync(fd) \ | |
234 | (GL_LINK_WARNING ("fsync is unportable - " \ | |
235 | "use gnulib module fsync for portability"), \ | |
236 | fsync (fd)) | |
237 | #endif | |
238 | ||
239 | ||
240 | #if @GNULIB_FTRUNCATE@ | |
241 | # if !@HAVE_FTRUNCATE@ | |
242 | /* Change the size of the file to which FD is opened to become equal to LENGTH. | |
243 | Return 0 if successful, otherwise -1 and errno set. | |
244 | See the POSIX:2001 specification | |
245 | <http://www.opengroup.org/susv3xsh/ftruncate.html>. */ | |
246 | extern int ftruncate (int fd, off_t length); | |
247 | # endif | |
248 | #elif defined GNULIB_POSIXCHECK | |
249 | # undef ftruncate | |
250 | # define ftruncate(f,l) \ | |
251 | (GL_LINK_WARNING ("ftruncate is unportable - " \ | |
252 | "use gnulib module ftruncate for portability"), \ | |
253 | ftruncate (f, l)) | |
254 | #endif | |
255 | ||
256 | ||
257 | #if @GNULIB_GETCWD@ | |
258 | /* Include the headers that might declare getcwd so that they will not | |
259 | cause confusion if included after this file. */ | |
260 | # include <stdlib.h> | |
261 | # if @REPLACE_GETCWD@ | |
262 | /* Get the name of the current working directory, and put it in SIZE bytes | |
263 | of BUF. | |
264 | Return BUF if successful, or NULL if the directory couldn't be determined | |
265 | or SIZE was too small. | |
266 | See the POSIX:2001 specification | |
267 | <http://www.opengroup.org/susv3xsh/getcwd.html>. | |
268 | Additionally, the gnulib module 'getcwd' guarantees the following GNU | |
269 | extension: If BUF is NULL, an array is allocated with 'malloc'; the array | |
270 | is SIZE bytes long, unless SIZE == 0, in which case it is as big as | |
271 | necessary. */ | |
272 | # define getcwd rpl_getcwd | |
273 | extern char * getcwd (char *buf, size_t size); | |
274 | # endif | |
275 | #elif defined GNULIB_POSIXCHECK | |
276 | # undef getcwd | |
277 | # define getcwd(b,s) \ | |
278 | (GL_LINK_WARNING ("getcwd is unportable - " \ | |
279 | "use gnulib module getcwd for portability"), \ | |
280 | getcwd (b, s)) | |
281 | #endif | |
282 | ||
283 | ||
284 | #if @GNULIB_GETDOMAINNAME@ | |
285 | /* Return the NIS domain name of the machine. | |
286 | WARNING! The NIS domain name is unrelated to the fully qualified host name | |
287 | of the machine. It is also unrelated to email addresses. | |
288 | WARNING! The NIS domain name is usually the empty string or "(none)" when | |
289 | not using NIS. | |
290 | ||
291 | Put up to LEN bytes of the NIS domain name into NAME. | |
292 | Null terminate it if the name is shorter than LEN. | |
293 | If the NIS domain name is longer than LEN, set errno = EINVAL and return -1. | |
294 | Return 0 if successful, otherwise set errno and return -1. */ | |
295 | # if !@HAVE_GETDOMAINNAME@ | |
296 | extern int getdomainname(char *name, size_t len); | |
297 | # endif | |
298 | #elif defined GNULIB_POSIXCHECK | |
299 | # undef getdomainname | |
300 | # define getdomainname(n,l) \ | |
301 | (GL_LINK_WARNING ("getdomainname is unportable - " \ | |
302 | "use gnulib module getdomainname for portability"), \ | |
303 | getdomainname (n, l)) | |
304 | #endif | |
305 | ||
306 | ||
307 | #if @GNULIB_GETDTABLESIZE@ | |
308 | # if !@HAVE_GETDTABLESIZE@ | |
309 | /* Return the maximum number of file descriptors in the current process. */ | |
310 | extern int getdtablesize (void); | |
311 | # endif | |
312 | #elif defined GNULIB_POSIXCHECK | |
313 | # undef getdtablesize | |
314 | # define getdtablesize() \ | |
315 | (GL_LINK_WARNING ("getdtablesize is unportable - " \ | |
316 | "use gnulib module getdtablesize for portability"), \ | |
317 | getdtablesize ()) | |
318 | #endif | |
319 | ||
320 | ||
321 | #if @GNULIB_GETHOSTNAME@ | |
322 | /* Return the standard host name of the machine. | |
323 | WARNING! The host name may or may not be fully qualified. | |
324 | ||
325 | Put up to LEN bytes of the host name into NAME. | |
326 | Null terminate it if the name is shorter than LEN. | |
327 | If the host name is longer than LEN, set errno = EINVAL and return -1. | |
328 | Return 0 if successful, otherwise set errno and return -1. */ | |
329 | # if @UNISTD_H_HAVE_WINSOCK2_H@ | |
330 | # undef gethostname | |
331 | # define gethostname rpl_gethostname | |
332 | # endif | |
333 | # if @UNISTD_H_HAVE_WINSOCK2_H@ || !@HAVE_GETHOSTNAME@ | |
334 | extern int gethostname(char *name, size_t len); | |
335 | # endif | |
336 | #elif @UNISTD_H_HAVE_WINSOCK2_H@ | |
337 | # undef gethostname | |
338 | # define gethostname gethostname_used_without_requesting_gnulib_module_gethostname | |
339 | #elif defined GNULIB_POSIXCHECK | |
340 | # undef gethostname | |
341 | # define gethostname(n,l) \ | |
342 | (GL_LINK_WARNING ("gethostname is unportable - " \ | |
343 | "use gnulib module gethostname for portability"), \ | |
344 | gethostname (n, l)) | |
345 | #endif | |
346 | ||
347 | ||
348 | #if @GNULIB_GETLOGIN_R@ | |
349 | /* Copies the user's login name to NAME. | |
350 | The array pointed to by NAME has room for SIZE bytes. | |
351 | ||
352 | Returns 0 if successful. Upon error, an error number is returned, or -1 in | |
353 | the case that the login name cannot be found but no specific error is | |
354 | provided (this case is hopefully rare but is left open by the POSIX spec). | |
355 | ||
356 | See <http://www.opengroup.org/susv3xsh/getlogin.html>. | |
357 | */ | |
358 | # if !@HAVE_DECL_GETLOGIN_R@ | |
359 | # include <stddef.h> | |
360 | extern int getlogin_r (char *name, size_t size); | |
361 | # endif | |
362 | #elif defined GNULIB_POSIXCHECK | |
363 | # undef getlogin_r | |
364 | # define getlogin_r(n,s) \ | |
365 | (GL_LINK_WARNING ("getlogin_r is unportable - " \ | |
366 | "use gnulib module getlogin_r for portability"), \ | |
367 | getlogin_r (n, s)) | |
368 | #endif | |
369 | ||
370 | ||
371 | #if @GNULIB_GETPAGESIZE@ | |
372 | # if @REPLACE_GETPAGESIZE@ | |
373 | # define getpagesize rpl_getpagesize | |
374 | extern int getpagesize (void); | |
375 | # elif !@HAVE_GETPAGESIZE@ | |
376 | /* This is for POSIX systems. */ | |
377 | # if !defined getpagesize && defined _SC_PAGESIZE | |
378 | # if ! (defined __VMS && __VMS_VER < 70000000) | |
379 | # define getpagesize() sysconf (_SC_PAGESIZE) | |
380 | # endif | |
381 | # endif | |
382 | /* This is for older VMS. */ | |
383 | # if !defined getpagesize && defined __VMS | |
384 | # ifdef __ALPHA | |
385 | # define getpagesize() 8192 | |
386 | # else | |
387 | # define getpagesize() 512 | |
388 | # endif | |
389 | # endif | |
390 | /* This is for BeOS. */ | |
391 | # if !defined getpagesize && @HAVE_OS_H@ | |
392 | # include <OS.h> | |
393 | # if defined B_PAGE_SIZE | |
394 | # define getpagesize() B_PAGE_SIZE | |
395 | # endif | |
396 | # endif | |
397 | /* This is for AmigaOS4.0. */ | |
398 | # if !defined getpagesize && defined __amigaos4__ | |
399 | # define getpagesize() 2048 | |
400 | # endif | |
401 | /* This is for older Unix systems. */ | |
402 | # if !defined getpagesize && @HAVE_SYS_PARAM_H@ | |
403 | # include <sys/param.h> | |
404 | # ifdef EXEC_PAGESIZE | |
405 | # define getpagesize() EXEC_PAGESIZE | |
406 | # else | |
407 | # ifdef NBPG | |
408 | # ifndef CLSIZE | |
409 | # define CLSIZE 1 | |
410 | # endif | |
411 | # define getpagesize() (NBPG * CLSIZE) | |
412 | # else | |
413 | # ifdef NBPC | |
414 | # define getpagesize() NBPC | |
415 | # endif | |
416 | # endif | |
417 | # endif | |
418 | # endif | |
419 | # endif | |
420 | #elif defined GNULIB_POSIXCHECK | |
421 | # undef getpagesize | |
422 | # define getpagesize() \ | |
423 | (GL_LINK_WARNING ("getpagesize is unportable - " \ | |
424 | "use gnulib module getpagesize for portability"), \ | |
425 | getpagesize ()) | |
426 | #endif | |
427 | ||
428 | ||
429 | #if @GNULIB_GETUSERSHELL@ | |
430 | # if !@HAVE_GETUSERSHELL@ | |
431 | /* Return the next valid login shell on the system, or NULL when the end of | |
432 | the list has been reached. */ | |
433 | extern char *getusershell (void); | |
434 | /* Rewind to pointer that is advanced at each getusershell() call. */ | |
435 | extern void setusershell (void); | |
436 | /* Free the pointer that is advanced at each getusershell() call and | |
437 | associated resources. */ | |
438 | extern void endusershell (void); | |
439 | # endif | |
440 | #elif defined GNULIB_POSIXCHECK | |
441 | # undef getusershell | |
442 | # define getusershell() \ | |
443 | (GL_LINK_WARNING ("getusershell is unportable - " \ | |
444 | "use gnulib module getusershell for portability"), \ | |
445 | getusershell ()) | |
446 | # undef setusershell | |
447 | # define setusershell() \ | |
448 | (GL_LINK_WARNING ("setusershell is unportable - " \ | |
449 | "use gnulib module getusershell for portability"), \ | |
450 | setusershell ()) | |
451 | # undef endusershell | |
452 | # define endusershell() \ | |
453 | (GL_LINK_WARNING ("endusershell is unportable - " \ | |
454 | "use gnulib module getusershell for portability"), \ | |
455 | endusershell ()) | |
456 | #endif | |
457 | ||
458 | ||
459 | #if @GNULIB_LCHOWN@ | |
460 | # if @REPLACE_LCHOWN@ | |
461 | /* Change the owner of FILE to UID (if UID is not -1) and the group of FILE | |
462 | to GID (if GID is not -1). Do not follow symbolic links. | |
463 | Return 0 if successful, otherwise -1 and errno set. | |
464 | See the POSIX:2001 specification | |
465 | <http://www.opengroup.org/susv3xsh/lchown.html>. */ | |
466 | # define lchown rpl_lchown | |
467 | extern int lchown (char const *file, uid_t owner, gid_t group); | |
468 | # endif | |
469 | #elif defined GNULIB_POSIXCHECK | |
470 | # undef lchown | |
471 | # define lchown(f,u,g) \ | |
472 | (GL_LINK_WARNING ("lchown is unportable to pre-POSIX.1-2001 " \ | |
473 | "systems - use gnulib module lchown for portability"), \ | |
474 | lchown (f, u, g)) | |
475 | #endif | |
476 | ||
477 | ||
478 | #if @GNULIB_LSEEK@ | |
479 | # if @REPLACE_LSEEK@ | |
480 | /* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END. | |
481 | Return the new offset if successful, otherwise -1 and errno set. | |
482 | See the POSIX:2001 specification | |
483 | <http://www.opengroup.org/susv3xsh/lseek.html>. */ | |
484 | # define lseek rpl_lseek | |
485 | extern off_t lseek (int fd, off_t offset, int whence); | |
486 | # endif | |
487 | #elif defined GNULIB_POSIXCHECK | |
488 | # undef lseek | |
489 | # define lseek(f,o,w) \ | |
490 | (GL_LINK_WARNING ("lseek does not fail with ESPIPE on pipes on some " \ | |
491 | "systems - use gnulib module lseek for portability"), \ | |
492 | lseek (f, o, w)) | |
493 | #endif | |
494 | ||
495 | ||
496 | #if @GNULIB_READLINK@ | |
497 | /* Read the contents of the symbolic link FILE and place the first BUFSIZE | |
498 | bytes of it into BUF. Return the number of bytes placed into BUF if | |
499 | successful, otherwise -1 and errno set. | |
500 | See the POSIX:2001 specification | |
501 | <http://www.opengroup.org/susv3xsh/readlink.html>. */ | |
502 | # if !@HAVE_READLINK@ | |
503 | # include <stddef.h> | |
504 | extern int readlink (const char *file, char *buf, size_t bufsize); | |
505 | # endif | |
506 | #elif defined GNULIB_POSIXCHECK | |
507 | # undef readlink | |
508 | # define readlink(f,b,s) \ | |
509 | (GL_LINK_WARNING ("readlink is unportable - " \ | |
510 | "use gnulib module readlink for portability"), \ | |
511 | readlink (f, b, s)) | |
512 | #endif | |
513 | ||
514 | ||
515 | #if @GNULIB_SLEEP@ | |
516 | /* Pause the execution of the current thread for N seconds. | |
517 | Returns the number of seconds left to sleep. | |
518 | See the POSIX:2001 specification | |
519 | <http://www.opengroup.org/susv3xsh/sleep.html>. */ | |
520 | # if !@HAVE_SLEEP@ | |
521 | extern unsigned int sleep (unsigned int n); | |
522 | # endif | |
523 | #elif defined GNULIB_POSIXCHECK | |
524 | # undef sleep | |
525 | # define sleep(n) \ | |
526 | (GL_LINK_WARNING ("sleep is unportable - " \ | |
527 | "use gnulib module sleep for portability"), \ | |
528 | sleep (n)) | |
529 | #endif | |
530 | ||
531 | ||
532 | #if @GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@ | |
533 | /* Write up to COUNT bytes starting at BUF to file descriptor FD. | |
534 | See the POSIX:2001 specification | |
535 | <http://www.opengroup.org/susv3xsh/write.html>. */ | |
536 | # undef write | |
537 | # define write rpl_write | |
538 | extern ssize_t write (int fd, const void *buf, size_t count); | |
539 | #endif | |
540 | ||
541 | ||
542 | #ifdef FCHDIR_REPLACEMENT | |
543 | /* gnulib internal function. */ | |
544 | extern void _gl_unregister_fd (int fd); | |
545 | #endif | |
546 | ||
547 | ||
548 | #ifdef __cplusplus | |
549 | } | |
550 | #endif | |
551 | ||
552 | ||
553 | #endif /* _GL_UNISTD_H */ | |
554 | #endif /* _GL_UNISTD_H */ |