Commit | Line | Data |
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d675a50f | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
73be1d9e MV |
8 | * This library is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
0f2d19dd | 19 | \f |
2546b5c3 RB |
20 | #if HAVE_CONFIG_H |
21 | # include <config.h> | |
22 | #endif | |
0f2d19dd | 23 | |
8b50fe8e MV |
24 | /* Make GNU/Linux libc declare everything it has. */ |
25 | #define _GNU_SOURCE | |
26 | ||
0f2d19dd | 27 | #include <stdio.h> |
e6e2e95a MD |
28 | #include <errno.h> |
29 | ||
a0599745 | 30 | #include "libguile/_scm.h" |
b28f5b3c | 31 | #include "libguile/dynwind.h" |
a0599745 MD |
32 | #include "libguile/fports.h" |
33 | #include "libguile/scmsigs.h" | |
34 | #include "libguile/feature.h" | |
35 | #include "libguile/strings.h" | |
36 | #include "libguile/vectors.h" | |
c96d76b8 | 37 | #include "libguile/lang.h" |
a0599745 MD |
38 | |
39 | #include "libguile/validate.h" | |
40 | #include "libguile/posix.h" | |
0f2d19dd JB |
41 | \f |
42 | ||
02b754d3 GH |
43 | #ifdef HAVE_STRING_H |
44 | #include <string.h> | |
45 | #endif | |
0f2d19dd JB |
46 | #ifdef TIME_WITH_SYS_TIME |
47 | # include <sys/time.h> | |
48 | # include <time.h> | |
49 | #else | |
50 | # if HAVE_SYS_TIME_H | |
51 | # include <sys/time.h> | |
52 | # else | |
53 | # include <time.h> | |
54 | # endif | |
55 | #endif | |
56 | ||
57 | #ifdef HAVE_UNISTD_H | |
58 | #include <unistd.h> | |
95b88819 GH |
59 | #else |
60 | #ifndef ttyname | |
61 | extern char *ttyname(); | |
62 | #endif | |
0f2d19dd JB |
63 | #endif |
64 | ||
3594582b | 65 | #ifdef LIBC_H_WITH_UNISTD_H |
bab0f4e5 JB |
66 | #include <libc.h> |
67 | #endif | |
68 | ||
8cc71382 | 69 | #include <sys/types.h> |
0f2d19dd JB |
70 | #include <sys/stat.h> |
71 | #include <fcntl.h> | |
72 | ||
82893676 | 73 | #ifdef HAVE_PWD_H |
0f2d19dd | 74 | #include <pwd.h> |
82893676 MG |
75 | #endif |
76 | #ifdef HAVE_IO_H | |
77 | #include <io.h> | |
78 | #endif | |
f87c105a | 79 | #ifdef HAVE_WINSOCK2_H |
82893676 MG |
80 | #include <winsock2.h> |
81 | #endif | |
82 | ||
83 | #ifdef __MINGW32__ | |
84 | /* Some defines for Windows here. */ | |
7beabedb | 85 | # include <process.h> |
82893676 MG |
86 | # define pipe(fd) _pipe (fd, 256, O_BINARY) |
87 | #endif /* __MINGW32__ */ | |
0f2d19dd JB |
88 | |
89 | #if HAVE_SYS_WAIT_H | |
90 | # include <sys/wait.h> | |
91 | #endif | |
92 | #ifndef WEXITSTATUS | |
93 | # define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8) | |
94 | #endif | |
95 | #ifndef WIFEXITED | |
96 | # define WIFEXITED(stat_val) (((stat_val) & 255) == 0) | |
97 | #endif | |
98 | ||
99 | #include <signal.h> | |
100 | ||
0f2d19dd JB |
101 | extern char ** environ; |
102 | ||
82893676 | 103 | #ifdef HAVE_GRP_H |
0f2d19dd | 104 | #include <grp.h> |
82893676 MG |
105 | #endif |
106 | #ifdef HAVE_SYS_UTSNAME_H | |
0f2d19dd | 107 | #include <sys/utsname.h> |
82893676 | 108 | #endif |
0f2d19dd | 109 | |
0f2d19dd JB |
110 | #ifdef HAVE_SETLOCALE |
111 | #include <locale.h> | |
112 | #endif | |
113 | ||
b9a7b725 | 114 | #if HAVE_CRYPT_H |
94e6d793 MG |
115 | # include <crypt.h> |
116 | #endif | |
117 | ||
0eaf1055 KR |
118 | #ifdef HAVE_NETDB_H |
119 | #include <netdb.h> /* for MAXHOSTNAMELEN on Solaris */ | |
120 | #endif | |
121 | ||
122 | #ifdef HAVE_SYS_PARAM_H | |
123 | #include <sys/param.h> /* for MAXHOSTNAMELEN */ | |
124 | #endif | |
125 | ||
94e6d793 MG |
126 | #if HAVE_SYS_RESOURCE_H |
127 | # include <sys/resource.h> | |
128 | #endif | |
129 | ||
130 | #if HAVE_SYS_FILE_H | |
131 | # include <sys/file.h> | |
132 | #endif | |
133 | ||
eb7e1603 KR |
134 | #if HAVE_CRT_EXTERNS_H |
135 | #include <crt_externs.h> /* for Darwin _NSGetEnviron */ | |
136 | #endif | |
137 | ||
bab0f4e5 JB |
138 | /* Some Unix systems don't define these. CPP hair is dangerous, but |
139 | this seems safe enough... */ | |
140 | #ifndef R_OK | |
141 | #define R_OK 4 | |
142 | #endif | |
143 | ||
144 | #ifndef W_OK | |
145 | #define W_OK 2 | |
146 | #endif | |
147 | ||
148 | #ifndef X_OK | |
149 | #define X_OK 1 | |
150 | #endif | |
151 | ||
152 | #ifndef F_OK | |
153 | #define F_OK 0 | |
154 | #endif | |
398609a5 JB |
155 | |
156 | /* On NextStep, <utime.h> doesn't define struct utime, unless we | |
157 | #define _POSIX_SOURCE before #including it. I think this is less | |
158 | of a kludge than defining struct utimbuf ourselves. */ | |
159 | #ifdef UTIMBUF_NEEDS_POSIX | |
160 | #define _POSIX_SOURCE | |
161 | #endif | |
162 | ||
163 | #ifdef HAVE_SYS_UTIME_H | |
164 | #include <sys/utime.h> | |
165 | #endif | |
166 | ||
167 | #ifdef HAVE_UTIME_H | |
168 | #include <utime.h> | |
169 | #endif | |
170 | ||
171 | /* Please don't add any more #includes or #defines here. The hack | |
172 | above means that _POSIX_SOURCE may be #defined, which will | |
eb7e1603 KR |
173 | encourage header files to do strange things. |
174 | ||
175 | FIXME: Maybe should undef _POSIX_SOURCE after it's done its job. | |
176 | ||
177 | FIXME: Probably should do all the includes first, then all the fallback | |
178 | declarations and defines, in case things are not in the header we | |
179 | imagine. */ | |
180 | ||
181 | ||
182 | ||
183 | ||
184 | /* On Apple Darwin in a shared library there's no "environ" to access | |
185 | directly, instead the address of that variable must be obtained with | |
186 | _NSGetEnviron(). */ | |
187 | #if HAVE__NSGETENVIRON && defined (PIC) | |
188 | #define environ (*_NSGetEnviron()) | |
189 | #endif | |
398609a5 | 190 | |
0f2d19dd | 191 | \f |
bc45012d JB |
192 | SCM_SYMBOL (sym_read_pipe, "read pipe"); |
193 | SCM_SYMBOL (sym_write_pipe, "write pipe"); | |
0f2d19dd | 194 | |
a1ec6916 | 195 | SCM_DEFINE (scm_pipe, "pipe", 0, 0, 0, |
1bbd0b84 | 196 | (), |
1e6808ea MG |
197 | "Return a newly created pipe: a pair of ports which are linked\n" |
198 | "together on the local machine. The @emph{car} is the input\n" | |
199 | "port and the @emph{cdr} is the output port. Data written (and\n" | |
200 | "flushed) to the output port can be read from the input port.\n" | |
201 | "Pipes are commonly used for communication with a newly forked\n" | |
202 | "child process. The need to flush the output port can be\n" | |
203 | "avoided by making it unbuffered using @code{setvbuf}.\n" | |
204 | "\n" | |
205 | "Writes occur atomically provided the size of the data in bytes\n" | |
206 | "is not greater than the value of @code{PIPE_BUF}. Note that\n" | |
207 | "the output port is likely to block if too much data (typically\n" | |
208 | "equal to @code{PIPE_BUF}) has been written but not yet read\n" | |
209 | "from the input port.") | |
1bbd0b84 | 210 | #define FUNC_NAME s_scm_pipe |
0f2d19dd JB |
211 | { |
212 | int fd[2], rv; | |
0f2d19dd | 213 | SCM p_rd, p_wt; |
02b754d3 | 214 | |
0f2d19dd JB |
215 | rv = pipe (fd); |
216 | if (rv) | |
1bbd0b84 | 217 | SCM_SYSERROR; |
ee149d03 JB |
218 | |
219 | p_rd = scm_fdes_to_port (fd[0], "r", sym_read_pipe); | |
220 | p_wt = scm_fdes_to_port (fd[1], "w", sym_write_pipe); | |
0f2d19dd JB |
221 | return scm_cons (p_rd, p_wt); |
222 | } | |
1bbd0b84 | 223 | #undef FUNC_NAME |
0f2d19dd JB |
224 | |
225 | ||
0e958795 | 226 | #ifdef HAVE_GETGROUPS |
a1ec6916 | 227 | SCM_DEFINE (scm_getgroups, "getgroups", 0, 0, 0, |
1bbd0b84 | 228 | (), |
1e6808ea | 229 | "Return a vector of integers representing the current\n" |
bb2c02f2 | 230 | "supplementary group IDs.") |
1bbd0b84 | 231 | #define FUNC_NAME s_scm_getgroups |
0f2d19dd | 232 | { |
1d1559ce | 233 | SCM result; |
66460dfb | 234 | int ngroups; |
1be6b49c | 235 | size_t size; |
66460dfb DH |
236 | GETGROUPS_T *groups; |
237 | ||
238 | ngroups = getgroups (0, NULL); | |
239 | if (ngroups <= 0) | |
1bbd0b84 | 240 | SCM_SYSERROR; |
66460dfb DH |
241 | |
242 | size = ngroups * sizeof (GETGROUPS_T); | |
4c9419ac | 243 | groups = scm_malloc (size); |
66460dfb DH |
244 | getgroups (ngroups, groups); |
245 | ||
f360a962 MV |
246 | result = scm_c_make_vector (ngroups, SCM_BOOL_F); |
247 | while (--ngroups >= 0) | |
b9bd8526 | 248 | SCM_VECTOR_SET (result, ngroups, scm_from_ulong (groups[ngroups])); |
66460dfb | 249 | |
4c9419ac | 250 | free (groups); |
1d1559ce | 251 | return result; |
1bbd0b84 GB |
252 | } |
253 | #undef FUNC_NAME | |
0e958795 | 254 | #endif |
0f2d19dd | 255 | |
f360a962 MV |
256 | #ifdef HAVE_SETGROUPS |
257 | SCM_DEFINE (scm_setgroups, "setgroups", 1, 0, 0, | |
258 | (SCM group_vec), | |
259 | "Set the supplementary group IDs to those found in the vector argument.") | |
260 | #define FUNC_NAME s_scm_setgroups | |
261 | { | |
262 | size_t ngroups; | |
263 | size_t size; | |
264 | size_t i; | |
265 | int result; | |
266 | int save_errno; | |
267 | GETGROUPS_T *groups; | |
268 | ||
269 | SCM_VALIDATE_VECTOR (SCM_ARG1, group_vec); | |
270 | ||
271 | ngroups = SCM_VECTOR_LENGTH (group_vec); | |
272 | ||
273 | /* validate before allocating, so we don't have to worry about leaks */ | |
274 | for (i = 0; i < ngroups; i++) | |
275 | { | |
276 | unsigned long ulong_gid; | |
277 | GETGROUPS_T gid; | |
278 | SCM_VALIDATE_ULONG_COPY (1, SCM_VECTOR_REF (group_vec, i), ulong_gid); | |
279 | gid = ulong_gid; | |
280 | if (gid != ulong_gid) | |
281 | SCM_OUT_OF_RANGE (1, SCM_VECTOR_REF (group_vec, i)); | |
282 | } | |
283 | ||
284 | size = ngroups * sizeof (GETGROUPS_T); | |
2eb78d06 | 285 | if (size / sizeof (GETGROUPS_T) != ngroups) |
e11e83f3 | 286 | SCM_OUT_OF_RANGE (SCM_ARG1, scm_from_int (ngroups)); |
f360a962 MV |
287 | groups = scm_malloc (size); |
288 | for(i = 0; i < ngroups; i++) | |
289 | groups [i] = SCM_NUM2ULONG (1, SCM_VECTOR_REF (group_vec, i)); | |
290 | ||
291 | result = setgroups (ngroups, groups); | |
292 | save_errno = errno; /* don't let free() touch errno */ | |
293 | free (groups); | |
294 | errno = save_errno; | |
295 | if (result < 0) | |
296 | SCM_SYSERROR; | |
297 | return SCM_UNSPECIFIED; | |
298 | } | |
299 | #undef FUNC_NAME | |
300 | #endif | |
301 | ||
82893676 | 302 | #ifdef HAVE_GETPWENT |
a1ec6916 | 303 | SCM_DEFINE (scm_getpwuid, "getpw", 0, 1, 0, |
1bbd0b84 | 304 | (SCM user), |
b380b885 MD |
305 | "Look up an entry in the user database. @var{obj} can be an integer,\n" |
306 | "a string, or omitted, giving the behaviour of getpwuid, getpwnam\n" | |
307 | "or getpwent respectively.") | |
1bbd0b84 | 308 | #define FUNC_NAME s_scm_getpwuid |
0f2d19dd | 309 | { |
0f2d19dd | 310 | struct passwd *entry; |
0f2d19dd | 311 | |
1d1559ce | 312 | SCM result = scm_c_make_vector (7, SCM_UNSPECIFIED); |
7888309b | 313 | if (SCM_UNBNDP (user) || scm_is_false (user)) |
0f2d19dd | 314 | { |
0f2d19dd | 315 | SCM_SYSCALL (entry = getpwent ()); |
3d781d49 JB |
316 | if (! entry) |
317 | { | |
3d781d49 JB |
318 | return SCM_BOOL_F; |
319 | } | |
0f2d19dd | 320 | } |
e11e83f3 | 321 | else if (scm_is_integer (user)) |
0f2d19dd | 322 | { |
e11e83f3 | 323 | entry = getpwuid (scm_to_int (user)); |
0f2d19dd JB |
324 | } |
325 | else | |
326 | { | |
a6d9e5ab | 327 | SCM_VALIDATE_STRING (1, user); |
a6d9e5ab | 328 | entry = getpwnam (SCM_STRING_CHARS (user)); |
0f2d19dd JB |
329 | } |
330 | if (!entry) | |
1bbd0b84 | 331 | SCM_MISC_ERROR ("entry not found", SCM_EOL); |
02b754d3 | 332 | |
1d1559ce HWN |
333 | SCM_VECTOR_SET(result, 0, scm_makfrom0str (entry->pw_name)); |
334 | SCM_VECTOR_SET(result, 1, scm_makfrom0str (entry->pw_passwd)); | |
b9bd8526 MV |
335 | SCM_VECTOR_SET(result, 2, scm_from_ulong (entry->pw_uid)); |
336 | SCM_VECTOR_SET(result, 3, scm_from_ulong (entry->pw_gid)); | |
1d1559ce | 337 | SCM_VECTOR_SET(result, 4, scm_makfrom0str (entry->pw_gecos)); |
0f2d19dd | 338 | if (!entry->pw_dir) |
1d1559ce | 339 | SCM_VECTOR_SET(result, 5, scm_makfrom0str ("")); |
0f2d19dd | 340 | else |
1d1559ce | 341 | SCM_VECTOR_SET(result, 5, scm_makfrom0str (entry->pw_dir)); |
0f2d19dd | 342 | if (!entry->pw_shell) |
1d1559ce | 343 | SCM_VECTOR_SET(result, 6, scm_makfrom0str ("")); |
0f2d19dd | 344 | else |
1d1559ce HWN |
345 | SCM_VECTOR_SET(result, 6, scm_makfrom0str (entry->pw_shell)); |
346 | return result; | |
0f2d19dd | 347 | } |
1bbd0b84 | 348 | #undef FUNC_NAME |
82893676 | 349 | #endif /* HAVE_GETPWENT */ |
0f2d19dd JB |
350 | |
351 | ||
0e958795 | 352 | #ifdef HAVE_SETPWENT |
a1ec6916 | 353 | SCM_DEFINE (scm_setpwent, "setpw", 0, 1, 0, |
1bbd0b84 | 354 | (SCM arg), |
b380b885 MD |
355 | "If called with a true argument, initialize or reset the password data\n" |
356 | "stream. Otherwise, close the stream. The @code{setpwent} and\n" | |
357 | "@code{endpwent} procedures are implemented on top of this.") | |
1bbd0b84 | 358 | #define FUNC_NAME s_scm_setpwent |
0f2d19dd | 359 | { |
7888309b | 360 | if (SCM_UNBNDP (arg) || scm_is_false (arg)) |
0f2d19dd JB |
361 | endpwent (); |
362 | else | |
363 | setpwent (); | |
364 | return SCM_UNSPECIFIED; | |
365 | } | |
1bbd0b84 | 366 | #undef FUNC_NAME |
0e958795 | 367 | #endif |
0f2d19dd JB |
368 | |
369 | ||
82893676 | 370 | #ifdef HAVE_GETGRENT |
0f2d19dd | 371 | /* Combines getgrgid and getgrnam. */ |
a1ec6916 | 372 | SCM_DEFINE (scm_getgrgid, "getgr", 0, 1, 0, |
1bbd0b84 | 373 | (SCM name), |
b380b885 MD |
374 | "Look up an entry in the group database. @var{obj} can be an integer,\n" |
375 | "a string, or omitted, giving the behaviour of getgrgid, getgrnam\n" | |
376 | "or getgrent respectively.") | |
1bbd0b84 | 377 | #define FUNC_NAME s_scm_getgrgid |
0f2d19dd | 378 | { |
0f2d19dd | 379 | struct group *entry; |
1d1559ce | 380 | SCM result = scm_c_make_vector (4, SCM_UNSPECIFIED); |
34d19ef6 | 381 | |
7888309b | 382 | if (SCM_UNBNDP (name) || scm_is_false (name)) |
3d781d49 JB |
383 | { |
384 | SCM_SYSCALL (entry = getgrent ()); | |
385 | if (! entry) | |
386 | { | |
3d781d49 JB |
387 | return SCM_BOOL_F; |
388 | } | |
389 | } | |
e11e83f3 MV |
390 | else if (scm_is_integer (name)) |
391 | SCM_SYSCALL (entry = getgrgid (scm_to_int (name))); | |
0f2d19dd JB |
392 | else |
393 | { | |
a6d9e5ab | 394 | SCM_VALIDATE_STRING (1, name); |
a6d9e5ab | 395 | SCM_SYSCALL (entry = getgrnam (SCM_STRING_CHARS (name))); |
0f2d19dd JB |
396 | } |
397 | if (!entry) | |
1bbd0b84 | 398 | SCM_SYSERROR; |
02b754d3 | 399 | |
1d1559ce HWN |
400 | SCM_VECTOR_SET(result, 0, scm_makfrom0str (entry->gr_name)); |
401 | SCM_VECTOR_SET(result, 1, scm_makfrom0str (entry->gr_passwd)); | |
b9bd8526 | 402 | SCM_VECTOR_SET(result, 2, scm_from_ulong (entry->gr_gid)); |
1d1559ce HWN |
403 | SCM_VECTOR_SET(result, 3, scm_makfromstrs (-1, entry->gr_mem)); |
404 | return result; | |
0f2d19dd | 405 | } |
1bbd0b84 | 406 | #undef FUNC_NAME |
0f2d19dd JB |
407 | |
408 | ||
409 | ||
a1ec6916 | 410 | SCM_DEFINE (scm_setgrent, "setgr", 0, 1, 0, |
1bbd0b84 | 411 | (SCM arg), |
b380b885 MD |
412 | "If called with a true argument, initialize or reset the group data\n" |
413 | "stream. Otherwise, close the stream. The @code{setgrent} and\n" | |
414 | "@code{endgrent} procedures are implemented on top of this.") | |
1bbd0b84 | 415 | #define FUNC_NAME s_scm_setgrent |
0f2d19dd | 416 | { |
7888309b | 417 | if (SCM_UNBNDP (arg) || scm_is_false (arg)) |
0f2d19dd JB |
418 | endgrent (); |
419 | else | |
420 | setgrent (); | |
421 | return SCM_UNSPECIFIED; | |
422 | } | |
1bbd0b84 | 423 | #undef FUNC_NAME |
82893676 | 424 | #endif /* HAVE_GETGRENT */ |
0f2d19dd JB |
425 | |
426 | ||
a1ec6916 | 427 | SCM_DEFINE (scm_kill, "kill", 2, 0, 0, |
1bbd0b84 | 428 | (SCM pid, SCM sig), |
b380b885 MD |
429 | "Sends a signal to the specified process or group of processes.\n\n" |
430 | "@var{pid} specifies the processes to which the signal is sent:\n\n" | |
431 | "@table @r\n" | |
432 | "@item @var{pid} greater than 0\n" | |
433 | "The process whose identifier is @var{pid}.\n" | |
434 | "@item @var{pid} equal to 0\n" | |
435 | "All processes in the current process group.\n" | |
436 | "@item @var{pid} less than -1\n" | |
437 | "The process group whose identifier is -@var{pid}\n" | |
438 | "@item @var{pid} equal to -1\n" | |
439 | "If the process is privileged, all processes except for some special\n" | |
440 | "system processes. Otherwise, all processes with the current effective\n" | |
441 | "user ID.\n" | |
442 | "@end table\n\n" | |
443 | "@var{sig} should be specified using a variable corresponding to\n" | |
444 | "the Unix symbolic name, e.g.,\n\n" | |
445 | "@defvar SIGHUP\n" | |
446 | "Hang-up signal.\n" | |
447 | "@end defvar\n\n" | |
448 | "@defvar SIGINT\n" | |
449 | "Interrupt signal.\n" | |
450 | "@end defvar") | |
1bbd0b84 | 451 | #define FUNC_NAME s_scm_kill |
0f2d19dd | 452 | { |
0f2d19dd | 453 | /* Signal values are interned in scm_init_posix(). */ |
82893676 | 454 | #ifdef HAVE_KILL |
a55c2b68 | 455 | if (kill (scm_to_int (pid), scm_to_int (sig)) != 0) |
82893676 | 456 | #else |
a55c2b68 MV |
457 | if (scm_to_int (pid) == getpid ()) |
458 | if (raise (scm_to_int (sig)) != 0) | |
82893676 MG |
459 | #endif |
460 | SCM_SYSERROR; | |
02b754d3 | 461 | return SCM_UNSPECIFIED; |
0f2d19dd | 462 | } |
1bbd0b84 | 463 | #undef FUNC_NAME |
0f2d19dd | 464 | |
d00ae47e | 465 | #ifdef HAVE_WAITPID |
a1ec6916 | 466 | SCM_DEFINE (scm_waitpid, "waitpid", 1, 1, 0, |
1bbd0b84 | 467 | (SCM pid, SCM options), |
b380b885 MD |
468 | "This procedure collects status information from a child process which\n" |
469 | "has terminated or (optionally) stopped. Normally it will\n" | |
470 | "suspend the calling process until this can be done. If more than one\n" | |
471 | "child process is eligible then one will be chosen by the operating system.\n\n" | |
472 | "The value of @var{pid} determines the behaviour:\n\n" | |
473 | "@table @r\n" | |
474 | "@item @var{pid} greater than 0\n" | |
475 | "Request status information from the specified child process.\n" | |
476 | "@item @var{pid} equal to -1 or WAIT_ANY\n" | |
477 | "Request status information for any child process.\n" | |
478 | "@item @var{pid} equal to 0 or WAIT_MYPGRP\n" | |
479 | "Request status information for any child process in the current process\n" | |
480 | "group.\n" | |
481 | "@item @var{pid} less than -1\n" | |
482 | "Request status information for any child process whose process group ID\n" | |
483 | "is -@var{PID}.\n" | |
484 | "@end table\n\n" | |
485 | "The @var{options} argument, if supplied, should be the bitwise OR of the\n" | |
486 | "values of zero or more of the following variables:\n\n" | |
487 | "@defvar WNOHANG\n" | |
488 | "Return immediately even if there are no child processes to be collected.\n" | |
489 | "@end defvar\n\n" | |
490 | "@defvar WUNTRACED\n" | |
491 | "Report status information for stopped processes as well as terminated\n" | |
492 | "processes.\n" | |
493 | "@end defvar\n\n" | |
494 | "The return value is a pair containing:\n\n" | |
495 | "@enumerate\n" | |
496 | "@item\n" | |
497 | "The process ID of the child process, or 0 if @code{WNOHANG} was\n" | |
498 | "specified and no process was collected.\n" | |
499 | "@item\n" | |
500 | "The integer status value.\n" | |
501 | "@end enumerate") | |
1bbd0b84 | 502 | #define FUNC_NAME s_scm_waitpid |
0f2d19dd JB |
503 | { |
504 | int i; | |
505 | int status; | |
506 | int ioptions; | |
0f2d19dd JB |
507 | if (SCM_UNBNDP (options)) |
508 | ioptions = 0; | |
509 | else | |
510 | { | |
0f2d19dd | 511 | /* Flags are interned in scm_init_posix. */ |
a55c2b68 | 512 | ioptions = scm_to_int (options); |
0f2d19dd | 513 | } |
a55c2b68 | 514 | SCM_SYSCALL (i = waitpid (scm_to_int (pid), &status, ioptions)); |
02b754d3 | 515 | if (i == -1) |
1bbd0b84 | 516 | SCM_SYSERROR; |
a55c2b68 | 517 | return scm_cons (scm_from_int (i), scm_from_int (status)); |
0f2d19dd | 518 | } |
1bbd0b84 | 519 | #undef FUNC_NAME |
d00ae47e | 520 | #endif /* HAVE_WAITPID */ |
0f2d19dd | 521 | |
82893676 | 522 | #ifndef __MINGW32__ |
a1ec6916 | 523 | SCM_DEFINE (scm_status_exit_val, "status:exit-val", 1, 0, 0, |
1bbd0b84 | 524 | (SCM status), |
1e6808ea MG |
525 | "Return the exit status value, as would be set if a process\n" |
526 | "ended normally through a call to @code{exit} or @code{_exit},\n" | |
527 | "if any, otherwise @code{#f}.") | |
1bbd0b84 | 528 | #define FUNC_NAME s_scm_status_exit_val |
67ec3667 | 529 | { |
e67dc2be JB |
530 | int lstatus; |
531 | ||
e67dc2be | 532 | /* On Ultrix, the WIF... macros assume their argument is an lvalue; |
e11e83f3 | 533 | go figure. */ |
a55c2b68 | 534 | lstatus = scm_to_int (status); |
e67dc2be | 535 | if (WIFEXITED (lstatus)) |
a55c2b68 | 536 | return (scm_from_int (WEXITSTATUS (lstatus))); |
67ec3667 GH |
537 | else |
538 | return SCM_BOOL_F; | |
539 | } | |
1bbd0b84 | 540 | #undef FUNC_NAME |
e67dc2be | 541 | |
a1ec6916 | 542 | SCM_DEFINE (scm_status_term_sig, "status:term-sig", 1, 0, 0, |
1bbd0b84 | 543 | (SCM status), |
1e6808ea MG |
544 | "Return the signal number which terminated the process, if any,\n" |
545 | "otherwise @code{#f}.") | |
1bbd0b84 | 546 | #define FUNC_NAME s_scm_status_term_sig |
67ec3667 | 547 | { |
e67dc2be JB |
548 | int lstatus; |
549 | ||
a55c2b68 | 550 | lstatus = scm_to_int (status); |
e67dc2be | 551 | if (WIFSIGNALED (lstatus)) |
a55c2b68 | 552 | return scm_from_int (WTERMSIG (lstatus)); |
67ec3667 GH |
553 | else |
554 | return SCM_BOOL_F; | |
555 | } | |
1bbd0b84 | 556 | #undef FUNC_NAME |
0f2d19dd | 557 | |
a1ec6916 | 558 | SCM_DEFINE (scm_status_stop_sig, "status:stop-sig", 1, 0, 0, |
1bbd0b84 | 559 | (SCM status), |
1e6808ea MG |
560 | "Return the signal number which stopped the process, if any,\n" |
561 | "otherwise @code{#f}.") | |
1bbd0b84 | 562 | #define FUNC_NAME s_scm_status_stop_sig |
67ec3667 | 563 | { |
e67dc2be JB |
564 | int lstatus; |
565 | ||
a55c2b68 | 566 | lstatus = scm_to_int (status); |
e67dc2be | 567 | if (WIFSTOPPED (lstatus)) |
a55c2b68 | 568 | return scm_from_int (WSTOPSIG (lstatus)); |
67ec3667 GH |
569 | else |
570 | return SCM_BOOL_F; | |
571 | } | |
1bbd0b84 | 572 | #undef FUNC_NAME |
82893676 | 573 | #endif /* __MINGW32__ */ |
0f2d19dd | 574 | |
82893676 | 575 | #ifdef HAVE_GETPPID |
a1ec6916 | 576 | SCM_DEFINE (scm_getppid, "getppid", 0, 0, 0, |
1bbd0b84 | 577 | (), |
1e6808ea MG |
578 | "Return an integer representing the process ID of the parent\n" |
579 | "process.") | |
1bbd0b84 | 580 | #define FUNC_NAME s_scm_getppid |
0f2d19dd | 581 | { |
e11e83f3 | 582 | return scm_from_int (getppid ()); |
0f2d19dd | 583 | } |
1bbd0b84 | 584 | #undef FUNC_NAME |
82893676 | 585 | #endif /* HAVE_GETPPID */ |
0f2d19dd JB |
586 | |
587 | ||
82893676 | 588 | #ifndef __MINGW32__ |
a1ec6916 | 589 | SCM_DEFINE (scm_getuid, "getuid", 0, 0, 0, |
1bbd0b84 | 590 | (), |
1e6808ea | 591 | "Return an integer representing the current real user ID.") |
1bbd0b84 | 592 | #define FUNC_NAME s_scm_getuid |
0f2d19dd | 593 | { |
e11e83f3 | 594 | return scm_from_int (getuid ()); |
0f2d19dd | 595 | } |
1bbd0b84 | 596 | #undef FUNC_NAME |
0f2d19dd JB |
597 | |
598 | ||
599 | ||
a1ec6916 | 600 | SCM_DEFINE (scm_getgid, "getgid", 0, 0, 0, |
1bbd0b84 | 601 | (), |
1e6808ea | 602 | "Return an integer representing the current real group ID.") |
1bbd0b84 | 603 | #define FUNC_NAME s_scm_getgid |
0f2d19dd | 604 | { |
e11e83f3 | 605 | return scm_from_int (getgid ()); |
0f2d19dd | 606 | } |
1bbd0b84 | 607 | #undef FUNC_NAME |
0f2d19dd JB |
608 | |
609 | ||
610 | ||
a1ec6916 | 611 | SCM_DEFINE (scm_geteuid, "geteuid", 0, 0, 0, |
1bbd0b84 | 612 | (), |
1e6808ea | 613 | "Return an integer representing the current effective user ID.\n" |
b380b885 | 614 | "If the system does not support effective IDs, then the real ID\n" |
480fa28d | 615 | "is returned. @code{(provided? 'EIDs)} reports whether the\n" |
1e6808ea | 616 | "system supports effective IDs.") |
1bbd0b84 | 617 | #define FUNC_NAME s_scm_geteuid |
0f2d19dd JB |
618 | { |
619 | #ifdef HAVE_GETEUID | |
e11e83f3 | 620 | return scm_from_int (geteuid ()); |
0f2d19dd | 621 | #else |
e11e83f3 | 622 | return scm_from_int (getuid ()); |
0f2d19dd JB |
623 | #endif |
624 | } | |
1bbd0b84 | 625 | #undef FUNC_NAME |
0f2d19dd JB |
626 | |
627 | ||
a1ec6916 | 628 | SCM_DEFINE (scm_getegid, "getegid", 0, 0, 0, |
1bbd0b84 | 629 | (), |
1e6808ea | 630 | "Return an integer representing the current effective group ID.\n" |
b380b885 | 631 | "If the system does not support effective IDs, then the real ID\n" |
480fa28d | 632 | "is returned. @code{(provided? 'EIDs)} reports whether the\n" |
1e6808ea | 633 | "system supports effective IDs.") |
1bbd0b84 | 634 | #define FUNC_NAME s_scm_getegid |
0f2d19dd JB |
635 | { |
636 | #ifdef HAVE_GETEUID | |
e11e83f3 | 637 | return scm_from_int (getegid ()); |
0f2d19dd | 638 | #else |
e11e83f3 | 639 | return scm_from_int (getgid ()); |
0f2d19dd JB |
640 | #endif |
641 | } | |
1bbd0b84 | 642 | #undef FUNC_NAME |
0f2d19dd JB |
643 | |
644 | ||
a1ec6916 | 645 | SCM_DEFINE (scm_setuid, "setuid", 1, 0, 0, |
1bbd0b84 | 646 | (SCM id), |
b380b885 MD |
647 | "Sets both the real and effective user IDs to the integer @var{id}, provided\n" |
648 | "the process has appropriate privileges.\n" | |
649 | "The return value is unspecified.") | |
1bbd0b84 | 650 | #define FUNC_NAME s_scm_setuid |
0f2d19dd | 651 | { |
a55c2b68 | 652 | if (setuid (scm_to_int (id)) != 0) |
1bbd0b84 | 653 | SCM_SYSERROR; |
02b754d3 | 654 | return SCM_UNSPECIFIED; |
0f2d19dd | 655 | } |
1bbd0b84 | 656 | #undef FUNC_NAME |
0f2d19dd | 657 | |
a1ec6916 | 658 | SCM_DEFINE (scm_setgid, "setgid", 1, 0, 0, |
1bbd0b84 | 659 | (SCM id), |
b380b885 MD |
660 | "Sets both the real and effective group IDs to the integer @var{id}, provided\n" |
661 | "the process has appropriate privileges.\n" | |
662 | "The return value is unspecified.") | |
1bbd0b84 | 663 | #define FUNC_NAME s_scm_setgid |
0f2d19dd | 664 | { |
a55c2b68 | 665 | if (setgid (scm_to_int (id)) != 0) |
1bbd0b84 | 666 | SCM_SYSERROR; |
02b754d3 | 667 | return SCM_UNSPECIFIED; |
0f2d19dd | 668 | } |
1bbd0b84 | 669 | #undef FUNC_NAME |
0f2d19dd | 670 | |
a1ec6916 | 671 | SCM_DEFINE (scm_seteuid, "seteuid", 1, 0, 0, |
1bbd0b84 | 672 | (SCM id), |
b380b885 MD |
673 | "Sets the effective user ID to the integer @var{id}, provided the process\n" |
674 | "has appropriate privileges. If effective IDs are not supported, the\n" | |
480fa28d | 675 | "real ID is set instead -- @code{(provided? 'EIDs)} reports whether the\n" |
b380b885 MD |
676 | "system supports effective IDs.\n" |
677 | "The return value is unspecified.") | |
1bbd0b84 | 678 | #define FUNC_NAME s_scm_seteuid |
0f2d19dd | 679 | { |
02b754d3 GH |
680 | int rv; |
681 | ||
0f2d19dd | 682 | #ifdef HAVE_SETEUID |
a55c2b68 | 683 | rv = seteuid (scm_to_int (id)); |
0f2d19dd | 684 | #else |
a55c2b68 | 685 | rv = setuid (scm_to_int (id)); |
0f2d19dd | 686 | #endif |
02b754d3 | 687 | if (rv != 0) |
1bbd0b84 | 688 | SCM_SYSERROR; |
02b754d3 | 689 | return SCM_UNSPECIFIED; |
0f2d19dd | 690 | } |
1bbd0b84 | 691 | #undef FUNC_NAME |
7beabedb MG |
692 | #endif /* __MINGW32__ */ |
693 | ||
0f2d19dd | 694 | |
0e958795 | 695 | #ifdef HAVE_SETEGID |
a1ec6916 | 696 | SCM_DEFINE (scm_setegid, "setegid", 1, 0, 0, |
1bbd0b84 | 697 | (SCM id), |
b380b885 MD |
698 | "Sets the effective group ID to the integer @var{id}, provided the process\n" |
699 | "has appropriate privileges. If effective IDs are not supported, the\n" | |
480fa28d | 700 | "real ID is set instead -- @code{(provided? 'EIDs)} reports whether the\n" |
b380b885 MD |
701 | "system supports effective IDs.\n" |
702 | "The return value is unspecified.") | |
1bbd0b84 | 703 | #define FUNC_NAME s_scm_setegid |
0f2d19dd | 704 | { |
02b754d3 GH |
705 | int rv; |
706 | ||
0f2d19dd | 707 | #ifdef HAVE_SETEUID |
a55c2b68 | 708 | rv = setegid (scm_to_int (id)); |
0f2d19dd | 709 | #else |
a55c2b68 | 710 | rv = setgid (scm_to_int (id)); |
0f2d19dd | 711 | #endif |
02b754d3 | 712 | if (rv != 0) |
1bbd0b84 | 713 | SCM_SYSERROR; |
02b754d3 GH |
714 | return SCM_UNSPECIFIED; |
715 | ||
0f2d19dd | 716 | } |
1bbd0b84 | 717 | #undef FUNC_NAME |
0e958795 | 718 | #endif |
0f2d19dd | 719 | |
82893676 MG |
720 | |
721 | #ifdef HAVE_GETPGRP | |
a1ec6916 | 722 | SCM_DEFINE (scm_getpgrp, "getpgrp", 0, 0, 0, |
1bbd0b84 | 723 | (), |
1e6808ea | 724 | "Return an integer representing the current process group ID.\n" |
b380b885 | 725 | "This is the POSIX definition, not BSD.") |
1bbd0b84 | 726 | #define FUNC_NAME s_scm_getpgrp |
0f2d19dd JB |
727 | { |
728 | int (*fn)(); | |
4625e44f | 729 | fn = (int (*) ()) getpgrp; |
e11e83f3 | 730 | return scm_from_int (fn (0)); |
0f2d19dd | 731 | } |
1bbd0b84 | 732 | #undef FUNC_NAME |
82893676 MG |
733 | #endif /* HAVE_GETPGRP */ |
734 | ||
0f2d19dd | 735 | |
f25f761d | 736 | #ifdef HAVE_SETPGID |
a1ec6916 | 737 | SCM_DEFINE (scm_setpgid, "setpgid", 2, 0, 0, |
1bbd0b84 | 738 | (SCM pid, SCM pgid), |
b380b885 MD |
739 | "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or\n" |
740 | "@var{pgid} must be integers: they can be zero to indicate the ID of the\n" | |
741 | "current process.\n" | |
742 | "Fails on systems that do not support job control.\n" | |
743 | "The return value is unspecified.") | |
1bbd0b84 | 744 | #define FUNC_NAME s_scm_setpgid |
0f2d19dd | 745 | { |
02b754d3 | 746 | /* FIXME(?): may be known as setpgrp. */ |
a55c2b68 | 747 | if (setpgid (scm_to_int (pid), scm_to_int (pgid)) != 0) |
1bbd0b84 | 748 | SCM_SYSERROR; |
02b754d3 | 749 | return SCM_UNSPECIFIED; |
0f2d19dd | 750 | } |
1bbd0b84 | 751 | #undef FUNC_NAME |
f25f761d | 752 | #endif /* HAVE_SETPGID */ |
0f2d19dd | 753 | |
f25f761d | 754 | #ifdef HAVE_SETSID |
a1ec6916 | 755 | SCM_DEFINE (scm_setsid, "setsid", 0, 0, 0, |
1bbd0b84 | 756 | (), |
b380b885 MD |
757 | "Creates a new session. The current process becomes the session leader\n" |
758 | "and is put in a new process group. The process will be detached\n" | |
759 | "from its controlling terminal if it has one.\n" | |
760 | "The return value is an integer representing the new process group ID.") | |
1bbd0b84 | 761 | #define FUNC_NAME s_scm_setsid |
0f2d19dd JB |
762 | { |
763 | pid_t sid = setsid (); | |
02b754d3 | 764 | if (sid == -1) |
1bbd0b84 | 765 | SCM_SYSERROR; |
02b754d3 | 766 | return SCM_UNSPECIFIED; |
0f2d19dd | 767 | } |
1bbd0b84 | 768 | #undef FUNC_NAME |
f25f761d | 769 | #endif /* HAVE_SETSID */ |
0f2d19dd | 770 | |
e8a59063 KR |
771 | |
772 | /* ttyname returns its result in a single static buffer, hence | |
773 | scm_i_misc_mutex for thread safety. In glibc 2.3.2 two threads | |
774 | continuously calling ttyname will otherwise get an overwrite quite | |
775 | easily. | |
776 | ||
777 | ttyname_r (when available) could be used instead of scm_i_misc_mutex, but | |
778 | there's probably little to be gained in either speed or parallelism. */ | |
779 | ||
82893676 | 780 | #ifdef HAVE_TTYNAME |
a1ec6916 | 781 | SCM_DEFINE (scm_ttyname, "ttyname", 1, 0, 0, |
1bbd0b84 | 782 | (SCM port), |
1e6808ea MG |
783 | "Return a string with the name of the serial terminal device\n" |
784 | "underlying @var{port}.") | |
1bbd0b84 | 785 | #define FUNC_NAME s_scm_ttyname |
0f2d19dd | 786 | { |
1d1559ce | 787 | char *result; |
e8a59063 KR |
788 | int fd, err; |
789 | SCM ret; | |
78446828 MV |
790 | |
791 | port = SCM_COERCE_OUTPORT (port); | |
34d19ef6 | 792 | SCM_VALIDATE_OPPORT (1, port); |
a98bddfd | 793 | if (!SCM_FPORTP (port)) |
0f2d19dd | 794 | return SCM_BOOL_F; |
ee149d03 | 795 | fd = SCM_FPORT_FDES (port); |
e8a59063 KR |
796 | |
797 | scm_mutex_lock (&scm_i_misc_mutex); | |
1d1559ce | 798 | SCM_SYSCALL (result = ttyname (fd)); |
e8a59063 KR |
799 | err = errno; |
800 | ret = scm_makfrom0str (result); | |
801 | scm_mutex_unlock (&scm_i_misc_mutex); | |
802 | ||
1d1559ce | 803 | if (!result) |
e8a59063 KR |
804 | { |
805 | errno = err; | |
806 | SCM_SYSERROR; | |
807 | } | |
808 | return ret; | |
0f2d19dd | 809 | } |
1bbd0b84 | 810 | #undef FUNC_NAME |
82893676 | 811 | #endif /* HAVE_TTYNAME */ |
0f2d19dd | 812 | |
e8a59063 | 813 | |
0a9d83b0 KR |
814 | /* For thread safety "buf" is used instead of NULL for the ctermid static |
815 | buffer. Actually it's unlikely the controlling terminal will change | |
816 | during program execution, and indeed on glibc (2.3.2) it's always just | |
817 | "/dev/tty", but L_ctermid on the stack is easy and fast and guarantees | |
818 | safety everywhere. */ | |
f25f761d | 819 | #ifdef HAVE_CTERMID |
a1ec6916 | 820 | SCM_DEFINE (scm_ctermid, "ctermid", 0, 0, 0, |
1bbd0b84 | 821 | (), |
1e6808ea MG |
822 | "Return a string containing the file name of the controlling\n" |
823 | "terminal for the current process.") | |
1bbd0b84 | 824 | #define FUNC_NAME s_scm_ctermid |
0f2d19dd | 825 | { |
0a9d83b0 KR |
826 | char buf[L_ctermid]; |
827 | char *result = ctermid (buf); | |
02b754d3 | 828 | if (*result == '\0') |
1bbd0b84 | 829 | SCM_SYSERROR; |
02b754d3 | 830 | return scm_makfrom0str (result); |
0f2d19dd | 831 | } |
1bbd0b84 | 832 | #undef FUNC_NAME |
f25f761d | 833 | #endif /* HAVE_CTERMID */ |
0f2d19dd | 834 | |
f25f761d | 835 | #ifdef HAVE_TCGETPGRP |
a1ec6916 | 836 | SCM_DEFINE (scm_tcgetpgrp, "tcgetpgrp", 1, 0, 0, |
1bbd0b84 | 837 | (SCM port), |
1e6808ea MG |
838 | "Return the process group ID of the foreground process group\n" |
839 | "associated with the terminal open on the file descriptor\n" | |
840 | "underlying @var{port}.\n" | |
841 | "\n" | |
b380b885 MD |
842 | "If there is no foreground process group, the return value is a\n" |
843 | "number greater than 1 that does not match the process group ID\n" | |
844 | "of any existing process group. This can happen if all of the\n" | |
845 | "processes in the job that was formerly the foreground job have\n" | |
846 | "terminated, and no other job has yet been moved into the\n" | |
847 | "foreground.") | |
1bbd0b84 | 848 | #define FUNC_NAME s_scm_tcgetpgrp |
0f2d19dd JB |
849 | { |
850 | int fd; | |
851 | pid_t pgid; | |
78446828 MV |
852 | |
853 | port = SCM_COERCE_OUTPORT (port); | |
854 | ||
34d19ef6 | 855 | SCM_VALIDATE_OPFPORT (1, port); |
ee149d03 JB |
856 | fd = SCM_FPORT_FDES (port); |
857 | if ((pgid = tcgetpgrp (fd)) == -1) | |
1bbd0b84 | 858 | SCM_SYSERROR; |
e11e83f3 | 859 | return scm_from_int (pgid); |
1bbd0b84 GB |
860 | } |
861 | #undef FUNC_NAME | |
f25f761d | 862 | #endif /* HAVE_TCGETPGRP */ |
0f2d19dd | 863 | |
f25f761d | 864 | #ifdef HAVE_TCSETPGRP |
a1ec6916 | 865 | SCM_DEFINE (scm_tcsetpgrp, "tcsetpgrp", 2, 0, 0, |
1bbd0b84 | 866 | (SCM port, SCM pgid), |
b380b885 MD |
867 | "Set the foreground process group ID for the terminal used by the file\n" |
868 | "descriptor underlying @var{port} to the integer @var{pgid}.\n" | |
869 | "The calling process\n" | |
870 | "must be a member of the same session as @var{pgid} and must have the same\n" | |
871 | "controlling terminal. The return value is unspecified.") | |
1bbd0b84 | 872 | #define FUNC_NAME s_scm_tcsetpgrp |
0f2d19dd JB |
873 | { |
874 | int fd; | |
78446828 MV |
875 | |
876 | port = SCM_COERCE_OUTPORT (port); | |
877 | ||
34d19ef6 | 878 | SCM_VALIDATE_OPFPORT (1, port); |
ee149d03 | 879 | fd = SCM_FPORT_FDES (port); |
a55c2b68 | 880 | if (tcsetpgrp (fd, scm_to_int (pgid)) == -1) |
1bbd0b84 | 881 | SCM_SYSERROR; |
02b754d3 | 882 | return SCM_UNSPECIFIED; |
1bbd0b84 GB |
883 | } |
884 | #undef FUNC_NAME | |
f25f761d | 885 | #endif /* HAVE_TCSETPGRP */ |
0f2d19dd | 886 | |
2ee08a28 GH |
887 | /* return a newly allocated array of char pointers to each of the strings |
888 | in args, with a terminating NULL pointer. */ | |
889 | /* Note: a similar function is defined in dynl.c, but we don't necessarily | |
890 | want to export it. */ | |
891 | static char **allocate_string_pointers (SCM args) | |
0f2d19dd | 892 | { |
2ee08a28 GH |
893 | char **result; |
894 | int n_args = scm_ilength (args); | |
0f2d19dd | 895 | int i; |
6afcd3b2 | 896 | |
2ee08a28 GH |
897 | SCM_ASSERT (n_args >= 0, args, SCM_ARGn, "allocate_string_pointers"); |
898 | result = (char **) scm_malloc ((n_args + 1) * sizeof (char *)); | |
899 | result[n_args] = NULL; | |
900 | for (i = 0; i < n_args; i++) | |
0f2d19dd | 901 | { |
2ee08a28 | 902 | SCM car = SCM_CAR (args); |
a6d9e5ab | 903 | |
2ee08a28 GH |
904 | if (!SCM_STRINGP (car)) |
905 | { | |
906 | free (result); | |
907 | scm_wrong_type_arg ("allocate_string_pointers", SCM_ARGn, car); | |
908 | } | |
909 | result[i] = SCM_STRING_CHARS (SCM_CAR (args)); | |
910 | args = SCM_CDR (args); | |
0f2d19dd | 911 | } |
2ee08a28 | 912 | return result; |
0f2d19dd JB |
913 | } |
914 | ||
a1ec6916 | 915 | SCM_DEFINE (scm_execl, "execl", 1, 0, 1, |
1bbd0b84 | 916 | (SCM filename, SCM args), |
b380b885 MD |
917 | "Executes the file named by @var{path} as a new process image.\n" |
918 | "The remaining arguments are supplied to the process; from a C program\n" | |
bb2c02f2 | 919 | "they are accessible as the @code{argv} argument to @code{main}.\n" |
b380b885 | 920 | "Conventionally the first @var{arg} is the same as @var{path}.\n" |
8f85c0c6 | 921 | "All arguments must be strings.\n\n" |
b380b885 MD |
922 | "If @var{arg} is missing, @var{path} is executed with a null\n" |
923 | "argument list, which may have system-dependent side-effects.\n\n" | |
924 | "This procedure is currently implemented using the @code{execv} system\n" | |
925 | "call, but we call it @code{execl} because of its Scheme calling interface.") | |
1bbd0b84 | 926 | #define FUNC_NAME s_scm_execl |
0f2d19dd JB |
927 | { |
928 | char **execargv; | |
807f353f | 929 | int save_errno; |
a6d9e5ab | 930 | SCM_VALIDATE_STRING (1, filename); |
2ee08a28 | 931 | execargv = allocate_string_pointers (args); |
a6d9e5ab | 932 | execv (SCM_STRING_CHARS (filename), execargv); |
807f353f KR |
933 | save_errno = errno; |
934 | free (execargv); | |
935 | errno = save_errno; | |
1bbd0b84 | 936 | SCM_SYSERROR; |
02b754d3 GH |
937 | /* not reached. */ |
938 | return SCM_BOOL_F; | |
0f2d19dd | 939 | } |
1bbd0b84 | 940 | #undef FUNC_NAME |
0f2d19dd | 941 | |
a1ec6916 | 942 | SCM_DEFINE (scm_execlp, "execlp", 1, 0, 1, |
1bbd0b84 | 943 | (SCM filename, SCM args), |
b380b885 MD |
944 | "Similar to @code{execl}, however if\n" |
945 | "@var{filename} does not contain a slash\n" | |
946 | "then the file to execute will be located by searching the\n" | |
947 | "directories listed in the @code{PATH} environment variable.\n\n" | |
6bcd01fc | 948 | "This procedure is currently implemented using the @code{execvp} system\n" |
b380b885 | 949 | "call, but we call it @code{execlp} because of its Scheme calling interface.") |
1bbd0b84 | 950 | #define FUNC_NAME s_scm_execlp |
0f2d19dd JB |
951 | { |
952 | char **execargv; | |
807f353f | 953 | int save_errno; |
a6d9e5ab | 954 | SCM_VALIDATE_STRING (1, filename); |
2ee08a28 | 955 | execargv = allocate_string_pointers (args); |
a6d9e5ab | 956 | execvp (SCM_STRING_CHARS (filename), execargv); |
807f353f KR |
957 | save_errno = errno; |
958 | free (execargv); | |
959 | errno = save_errno; | |
1bbd0b84 | 960 | SCM_SYSERROR; |
02b754d3 GH |
961 | /* not reached. */ |
962 | return SCM_BOOL_F; | |
0f2d19dd | 963 | } |
1bbd0b84 | 964 | #undef FUNC_NAME |
0f2d19dd | 965 | |
6afcd3b2 | 966 | static char ** |
3eeba8d4 | 967 | environ_list_to_c (SCM envlist, int arg, const char *proc) |
6afcd3b2 GH |
968 | { |
969 | int num_strings; | |
970 | char **result; | |
a6d9e5ab | 971 | int i; |
6afcd3b2 | 972 | |
6afcd3b2 | 973 | num_strings = scm_ilength (envlist); |
a6d9e5ab | 974 | SCM_ASSERT (num_strings >= 0, envlist, arg, proc); |
67329a9e | 975 | result = (char **) scm_malloc ((num_strings + 1) * sizeof (char *)); |
6afcd3b2 GH |
976 | if (result == NULL) |
977 | scm_memory_error (proc); | |
c96d76b8 | 978 | for (i = 0; !SCM_NULL_OR_NIL_P (envlist); ++i, envlist = SCM_CDR (envlist)) |
6afcd3b2 | 979 | { |
a6d9e5ab | 980 | SCM str = SCM_CAR (envlist); |
6afcd3b2 GH |
981 | int len; |
982 | char *src; | |
983 | ||
a6d9e5ab DH |
984 | SCM_ASSERT (SCM_STRINGP (str), envlist, arg, proc); |
985 | len = SCM_STRING_LENGTH (str); | |
34f0f2b8 | 986 | src = SCM_STRING_CHARS (str); |
67329a9e | 987 | result[i] = scm_malloc (len + 1); |
6afcd3b2 GH |
988 | if (result[i] == NULL) |
989 | scm_memory_error (proc); | |
a6d9e5ab DH |
990 | memcpy (result[i], src, len); |
991 | result[i][len] = 0; | |
6afcd3b2 GH |
992 | } |
993 | result[i] = 0; | |
6afcd3b2 GH |
994 | return result; |
995 | } | |
996 | ||
807f353f KR |
997 | /* OPTIMIZE-ME: scm_execle doesn't need malloced copies of the environment |
998 | list strings the way environ_list_to_c gives. */ | |
999 | ||
a1ec6916 | 1000 | SCM_DEFINE (scm_execle, "execle", 2, 0, 1, |
1bbd0b84 | 1001 | (SCM filename, SCM env, SCM args), |
b380b885 MD |
1002 | "Similar to @code{execl}, but the environment of the new process is\n" |
1003 | "specified by @var{env}, which must be a list of strings as returned by the\n" | |
1004 | "@code{environ} procedure.\n\n" | |
1005 | "This procedure is currently implemented using the @code{execve} system\n" | |
1006 | "call, but we call it @code{execle} because of its Scheme calling interface.") | |
1bbd0b84 | 1007 | #define FUNC_NAME s_scm_execle |
6afcd3b2 GH |
1008 | { |
1009 | char **execargv; | |
1010 | char **exec_env; | |
807f353f | 1011 | int save_errno, i; |
6afcd3b2 | 1012 | |
a6d9e5ab | 1013 | SCM_VALIDATE_STRING (1, filename); |
6afcd3b2 | 1014 | |
2ee08a28 | 1015 | execargv = allocate_string_pointers (args); |
1bbd0b84 | 1016 | exec_env = environ_list_to_c (env, SCM_ARG2, FUNC_NAME); |
a6d9e5ab | 1017 | execve (SCM_STRING_CHARS (filename), execargv, exec_env); |
807f353f KR |
1018 | save_errno = errno; |
1019 | free (execargv); | |
1020 | for (i = 0; exec_env[i] != NULL; i++) | |
1021 | free (exec_env[i]); | |
1022 | free (exec_env); | |
1023 | errno = save_errno; | |
1bbd0b84 | 1024 | SCM_SYSERROR; |
6afcd3b2 GH |
1025 | /* not reached. */ |
1026 | return SCM_BOOL_F; | |
1027 | } | |
1bbd0b84 | 1028 | #undef FUNC_NAME |
6afcd3b2 | 1029 | |
82893676 | 1030 | #ifdef HAVE_FORK |
a1ec6916 | 1031 | SCM_DEFINE (scm_fork, "primitive-fork", 0, 0, 0, |
1bbd0b84 | 1032 | (), |
b380b885 MD |
1033 | "Creates a new \"child\" process by duplicating the current \"parent\" process.\n" |
1034 | "In the child the return value is 0. In the parent the return value is\n" | |
1035 | "the integer process ID of the child.\n\n" | |
1036 | "This procedure has been renamed from @code{fork} to avoid a naming conflict\n" | |
1037 | "with the scsh fork.") | |
1bbd0b84 | 1038 | #define FUNC_NAME s_scm_fork |
0f2d19dd | 1039 | { |
bab0f4e5 | 1040 | int pid; |
0f2d19dd JB |
1041 | pid = fork (); |
1042 | if (pid == -1) | |
1bbd0b84 | 1043 | SCM_SYSERROR; |
e11e83f3 | 1044 | return scm_from_int (pid); |
0f2d19dd | 1045 | } |
1bbd0b84 | 1046 | #undef FUNC_NAME |
82893676 | 1047 | #endif /* HAVE_FORK */ |
0f2d19dd | 1048 | |
4f68365d MV |
1049 | #ifdef __MINGW32__ |
1050 | # include "win32-uname.h" | |
1051 | #endif | |
1052 | ||
1053 | #if defined (HAVE_UNAME) || defined (__MINGW32__) | |
a1ec6916 | 1054 | SCM_DEFINE (scm_uname, "uname", 0, 0, 0, |
1bbd0b84 | 1055 | (), |
1e6808ea MG |
1056 | "Return an object with some information about the computer\n" |
1057 | "system the program is running on.") | |
1bbd0b84 | 1058 | #define FUNC_NAME s_scm_uname |
0f2d19dd | 1059 | { |
0f2d19dd | 1060 | struct utsname buf; |
1d1559ce | 1061 | SCM result = scm_c_make_vector (5, SCM_UNSPECIFIED); |
e1a191a8 | 1062 | if (uname (&buf) < 0) |
1bbd0b84 | 1063 | SCM_SYSERROR; |
1d1559ce HWN |
1064 | SCM_VECTOR_SET(result, 0, scm_makfrom0str (buf.sysname)); |
1065 | SCM_VECTOR_SET(result, 1, scm_makfrom0str (buf.nodename)); | |
1066 | SCM_VECTOR_SET(result, 2, scm_makfrom0str (buf.release)); | |
1067 | SCM_VECTOR_SET(result, 3, scm_makfrom0str (buf.version)); | |
1068 | SCM_VECTOR_SET(result, 4, scm_makfrom0str (buf.machine)); | |
0f2d19dd | 1069 | /* |
02b754d3 | 1070 | a linux special? |
1d1559ce | 1071 | SCM_VECTOR_SET(result, 5, scm_makfrom0str (buf.domainname)); |
0f2d19dd | 1072 | */ |
1d1559ce | 1073 | return result; |
0f2d19dd | 1074 | } |
1bbd0b84 | 1075 | #undef FUNC_NAME |
f25f761d | 1076 | #endif /* HAVE_UNAME */ |
0f2d19dd | 1077 | |
a1ec6916 | 1078 | SCM_DEFINE (scm_environ, "environ", 0, 1, 0, |
1bbd0b84 | 1079 | (SCM env), |
1e6808ea MG |
1080 | "If @var{env} is omitted, return the current environment (in the\n" |
1081 | "Unix sense) as a list of strings. Otherwise set the current\n" | |
1082 | "environment, which is also the default environment for child\n" | |
1083 | "processes, to the supplied list of strings. Each member of\n" | |
1084 | "@var{env} should be of the form @code{NAME=VALUE} and values of\n" | |
1085 | "@code{NAME} should not be duplicated. If @var{env} is supplied\n" | |
1086 | "then the return value is unspecified.") | |
1bbd0b84 | 1087 | #define FUNC_NAME s_scm_environ |
0f2d19dd JB |
1088 | { |
1089 | if (SCM_UNBNDP (env)) | |
1090 | return scm_makfromstrs (-1, environ); | |
1091 | else | |
1092 | { | |
0f2d19dd | 1093 | char **new_environ; |
6afcd3b2 | 1094 | |
1bbd0b84 | 1095 | new_environ = environ_list_to_c (env, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
1096 | /* Free the old environment, except when called for the first |
1097 | * time. | |
1098 | */ | |
1099 | { | |
1100 | char **ep; | |
1101 | static int first = 1; | |
1102 | if (!first) | |
1103 | { | |
1104 | for (ep = environ; *ep != NULL; ep++) | |
19468eff GH |
1105 | free (*ep); |
1106 | free ((char *) environ); | |
0f2d19dd JB |
1107 | } |
1108 | first = 0; | |
1109 | } | |
1110 | environ = new_environ; | |
1111 | return SCM_UNSPECIFIED; | |
1112 | } | |
1113 | } | |
1bbd0b84 | 1114 | #undef FUNC_NAME |
0f2d19dd | 1115 | |
9ee5fce4 MD |
1116 | #ifdef L_tmpnam |
1117 | ||
a1ec6916 | 1118 | SCM_DEFINE (scm_tmpnam, "tmpnam", 0, 0, 0, |
1bbd0b84 | 1119 | (), |
1e6808ea MG |
1120 | "Return a name in the file system that does not match any\n" |
1121 | "existing file. However there is no guarantee that another\n" | |
1122 | "process will not create the file after @code{tmpnam} is called.\n" | |
1123 | "Care should be taken if opening the file, e.g., use the\n" | |
1124 | "@code{O_EXCL} open flag or use @code{mkstemp!} instead.") | |
1bbd0b84 | 1125 | #define FUNC_NAME s_scm_tmpnam |
9ee5fce4 MD |
1126 | { |
1127 | char name[L_tmpnam]; | |
6d163216 GH |
1128 | char *rv; |
1129 | ||
1130 | SCM_SYSCALL (rv = tmpnam (name)); | |
1131 | if (rv == NULL) | |
1132 | /* not SCM_SYSERROR since errno probably not set. */ | |
1133 | SCM_MISC_ERROR ("tmpnam failed", SCM_EOL); | |
9ee5fce4 MD |
1134 | return scm_makfrom0str (name); |
1135 | } | |
0f981281 | 1136 | #undef FUNC_NAME |
0f2d19dd | 1137 | |
1bbd0b84 | 1138 | #endif |
1cc91f1b | 1139 | |
4f68365d MV |
1140 | #ifndef HAVE_MKSTEMP |
1141 | extern int mkstemp (char *); | |
1142 | #endif | |
1143 | ||
6d163216 GH |
1144 | SCM_DEFINE (scm_mkstemp, "mkstemp!", 1, 0, 0, |
1145 | (SCM tmpl), | |
1e6808ea MG |
1146 | "Create a new unique file in the file system and returns a new\n" |
1147 | "buffered port open for reading and writing to the file.\n" | |
1148 | "@var{tmpl} is a string specifying where the file should be\n" | |
1149 | "created: it must end with @code{XXXXXX} and will be changed in\n" | |
1150 | "place to return the name of the temporary file.") | |
6d163216 GH |
1151 | #define FUNC_NAME s_scm_mkstemp |
1152 | { | |
1153 | char *c_tmpl; | |
1154 | int rv; | |
1155 | ||
6d163216 GH |
1156 | SCM_VALIDATE_STRING_COPY (1, tmpl, c_tmpl); |
1157 | SCM_SYSCALL (rv = mkstemp (c_tmpl)); | |
1158 | if (rv == -1) | |
1159 | SCM_SYSERROR; | |
1160 | return scm_fdes_to_port (rv, "w+", tmpl); | |
1161 | } | |
1162 | #undef FUNC_NAME | |
1163 | ||
a1ec6916 | 1164 | SCM_DEFINE (scm_utime, "utime", 1, 2, 0, |
1bbd0b84 | 1165 | (SCM pathname, SCM actime, SCM modtime), |
1e6808ea MG |
1166 | "@code{utime} sets the access and modification times for the\n" |
1167 | "file named by @var{path}. If @var{actime} or @var{modtime} is\n" | |
1168 | "not supplied, then the current time is used. @var{actime} and\n" | |
1169 | "@var{modtime} must be integer time values as returned by the\n" | |
1170 | "@code{current-time} procedure.\n" | |
1171 | "@lisp\n" | |
b380b885 | 1172 | "(utime \"foo\" (- (current-time) 3600))\n" |
1e6808ea MG |
1173 | "@end lisp\n" |
1174 | "will set the access time to one hour in the past and the\n" | |
1175 | "modification time to the current time.") | |
1bbd0b84 | 1176 | #define FUNC_NAME s_scm_utime |
0f2d19dd JB |
1177 | { |
1178 | int rv; | |
1179 | struct utimbuf utm_tmp; | |
1180 | ||
a6d9e5ab | 1181 | SCM_VALIDATE_STRING (1, pathname); |
0f2d19dd JB |
1182 | if (SCM_UNBNDP (actime)) |
1183 | SCM_SYSCALL (time (&utm_tmp.actime)); | |
1184 | else | |
e4b265d8 | 1185 | utm_tmp.actime = SCM_NUM2ULONG (2, actime); |
0f2d19dd JB |
1186 | |
1187 | if (SCM_UNBNDP (modtime)) | |
1188 | SCM_SYSCALL (time (&utm_tmp.modtime)); | |
1189 | else | |
e4b265d8 | 1190 | utm_tmp.modtime = SCM_NUM2ULONG (3, modtime); |
0f2d19dd | 1191 | |
a6d9e5ab | 1192 | SCM_SYSCALL (rv = utime (SCM_STRING_CHARS (pathname), &utm_tmp)); |
02b754d3 | 1193 | if (rv != 0) |
1bbd0b84 | 1194 | SCM_SYSERROR; |
02b754d3 | 1195 | return SCM_UNSPECIFIED; |
0f2d19dd | 1196 | } |
1bbd0b84 | 1197 | #undef FUNC_NAME |
0f2d19dd | 1198 | |
a1ec6916 | 1199 | SCM_DEFINE (scm_access, "access?", 2, 0, 0, |
1bbd0b84 | 1200 | (SCM path, SCM how), |
1e6808ea MG |
1201 | "Return @code{#t} if @var{path} corresponds to an existing file\n" |
1202 | "and the current process has the type of access specified by\n" | |
1203 | "@var{how}, otherwise @code{#f}. @var{how} should be specified\n" | |
1204 | "using the values of the variables listed below. Multiple\n" | |
1205 | "values can be combined using a bitwise or, in which case\n" | |
1206 | "@code{#t} will only be returned if all accesses are granted.\n" | |
1207 | "\n" | |
1208 | "Permissions are checked using the real id of the current\n" | |
1209 | "process, not the effective id, although it's the effective id\n" | |
1210 | "which determines whether the access would actually be granted.\n" | |
1211 | "\n" | |
b380b885 MD |
1212 | "@defvar R_OK\n" |
1213 | "test for read permission.\n" | |
1214 | "@end defvar\n" | |
1215 | "@defvar W_OK\n" | |
1216 | "test for write permission.\n" | |
1217 | "@end defvar\n" | |
1218 | "@defvar X_OK\n" | |
1219 | "test for execute permission.\n" | |
1220 | "@end defvar\n" | |
1221 | "@defvar F_OK\n" | |
1222 | "test for existence of the file.\n" | |
1223 | "@end defvar") | |
1bbd0b84 | 1224 | #define FUNC_NAME s_scm_access |
0f2d19dd JB |
1225 | { |
1226 | int rv; | |
1227 | ||
a6d9e5ab | 1228 | SCM_VALIDATE_STRING (1, path); |
a55c2b68 | 1229 | rv = access (SCM_STRING_CHARS (path), scm_to_int (how)); |
7888309b | 1230 | return scm_from_bool (!rv); |
0f2d19dd | 1231 | } |
1bbd0b84 | 1232 | #undef FUNC_NAME |
0f2d19dd | 1233 | |
a1ec6916 | 1234 | SCM_DEFINE (scm_getpid, "getpid", 0, 0, 0, |
1bbd0b84 | 1235 | (), |
1e6808ea | 1236 | "Return an integer representing the current process ID.") |
1bbd0b84 | 1237 | #define FUNC_NAME s_scm_getpid |
0f2d19dd | 1238 | { |
e11e83f3 | 1239 | return scm_from_ulong (getpid ()); |
0f2d19dd | 1240 | } |
1bbd0b84 | 1241 | #undef FUNC_NAME |
0f2d19dd | 1242 | |
a1ec6916 | 1243 | SCM_DEFINE (scm_putenv, "putenv", 1, 0, 0, |
1bbd0b84 | 1244 | (SCM str), |
b380b885 MD |
1245 | "Modifies the environment of the current process, which is\n" |
1246 | "also the default environment inherited by child processes.\n\n" | |
1247 | "If @var{string} is of the form @code{NAME=VALUE} then it will be written\n" | |
1248 | "directly into the environment, replacing any existing environment string\n" | |
1249 | "with\n" | |
1250 | "name matching @code{NAME}. If @var{string} does not contain an equal\n" | |
1251 | "sign, then any existing string with name matching @var{string} will\n" | |
1252 | "be removed.\n\n" | |
1253 | "The return value is unspecified.") | |
1bbd0b84 | 1254 | #define FUNC_NAME s_scm_putenv |
0f2d19dd | 1255 | { |
f158788f | 1256 | int rv; |
19468eff | 1257 | char *ptr; |
f93ddd39 | 1258 | |
9fd38a3d | 1259 | SCM_VALIDATE_STRING (1, str); |
002409fe MV |
1260 | |
1261 | if (strchr (SCM_STRING_CHARS (str), '=') == NULL) | |
1262 | { | |
1e498fbd | 1263 | #ifdef HAVE_UNSETENV |
002409fe | 1264 | /* No '=' in argument means we should remove the variable from |
ff4b8391 KR |
1265 | the environment. Not all putenvs understand this (for instance |
1266 | FreeBSD 4.8 doesn't). To be safe, we do it explicitely using | |
1267 | unsetenv. */ | |
002409fe | 1268 | unsetenv (SCM_STRING_CHARS (str)); |
1e498fbd SJ |
1269 | #else |
1270 | /* On e.g. Win32 hosts putenv() called with 'name=' removes the | |
1271 | environment variable 'name'. */ | |
f158788f | 1272 | int e; |
1e498fbd | 1273 | ptr = scm_malloc (SCM_STRING_LENGTH (str) + 2); |
fcc5d734 SJ |
1274 | if (ptr == NULL) |
1275 | SCM_MEMORY_ERROR; | |
1e498fbd SJ |
1276 | strncpy (ptr, SCM_STRING_CHARS (str), SCM_STRING_LENGTH (str)); |
1277 | ptr[SCM_STRING_LENGTH (str)] = '='; | |
1278 | ptr[SCM_STRING_LENGTH (str) + 1] = 0; | |
1279 | rv = putenv (ptr); | |
dd65e90f | 1280 | e = errno; free (ptr); errno = e; |
1e498fbd SJ |
1281 | if (rv < 0) |
1282 | SCM_SYSERROR; | |
fcc5d734 | 1283 | #endif /* !HAVE_UNSETENV */ |
002409fe MV |
1284 | } |
1285 | else | |
1286 | { | |
1287 | /* must make a new copy to be left in the environment, safe from gc. */ | |
67329a9e | 1288 | ptr = scm_malloc (SCM_STRING_LENGTH (str) + 1); |
002409fe MV |
1289 | if (ptr == NULL) |
1290 | SCM_MEMORY_ERROR; | |
1291 | strncpy (ptr, SCM_STRING_CHARS (str), SCM_STRING_LENGTH (str)); | |
fcc5d734 SJ |
1292 | |
1293 | #ifdef __MINGW32__ | |
1294 | /* If str is "FOO=", ie. attempting to set an empty string, then | |
1295 | we need to see if it's been successful. On MINGW, "FOO=" | |
1296 | means remove FOO from the environment. As a workaround, we | |
1297 | set "FOO= ", ie. a space, and then modify the string returned | |
1298 | by getenv. It's not enough just to modify the string we set, | |
1299 | because MINGW putenv copies it. */ | |
1300 | if (ptr[SCM_STRING_LENGTH (str) - 1] == '=') | |
1301 | { | |
1302 | char *alt; | |
e11e83f3 MV |
1303 | SCM name = scm_substring (str, scm_from_int (0), |
1304 | scm_from_int (SCM_STRING_LENGTH (str)-1)); | |
fcc5d734 SJ |
1305 | if (getenv (SCM_STRING_CHARS (name)) == NULL) |
1306 | { | |
1307 | alt = scm_malloc (SCM_STRING_LENGTH (str) + 2); | |
1308 | if (alt == NULL) | |
1309 | { | |
1310 | free (ptr); | |
1311 | SCM_MEMORY_ERROR; | |
1312 | } | |
1313 | memcpy (alt, SCM_STRING_CHARS (str), SCM_STRING_LENGTH (str)); | |
1314 | alt[SCM_STRING_LENGTH (str)] = ' '; | |
1315 | alt[SCM_STRING_LENGTH (str) + 1] = '\0'; | |
1316 | rv = putenv (alt); | |
1317 | if (rv < 0) | |
1318 | SCM_SYSERROR; | |
1319 | free (ptr); /* don't need the old string we gave to putenv */ | |
1320 | } | |
1321 | alt = getenv (SCM_STRING_CHARS (name)); | |
1322 | alt[0] = '\0'; | |
1323 | return SCM_UNSPECIFIED; | |
1324 | } | |
1325 | #endif /* __MINGW32__ */ | |
1326 | ||
002409fe MV |
1327 | ptr[SCM_STRING_LENGTH (str)] = 0; |
1328 | rv = putenv (ptr); | |
1329 | if (rv < 0) | |
1330 | SCM_SYSERROR; | |
1331 | } | |
f93ddd39 | 1332 | return SCM_UNSPECIFIED; |
0f2d19dd | 1333 | } |
1bbd0b84 | 1334 | #undef FUNC_NAME |
0f2d19dd | 1335 | |
f25f761d | 1336 | #ifdef HAVE_SETLOCALE |
a1ec6916 | 1337 | SCM_DEFINE (scm_setlocale, "setlocale", 1, 1, 0, |
1bbd0b84 | 1338 | (SCM category, SCM locale), |
1e6808ea MG |
1339 | "If @var{locale} is omitted, return the current value of the\n" |
1340 | "specified locale category as a system-dependent string.\n" | |
1341 | "@var{category} should be specified using the values\n" | |
1342 | "@code{LC_COLLATE}, @code{LC_ALL} etc.\n" | |
1343 | "\n" | |
1344 | "Otherwise the specified locale category is set to the string\n" | |
1345 | "@var{locale} and the new value is returned as a\n" | |
1346 | "system-dependent string. If @var{locale} is an empty string,\n" | |
bb2c02f2 | 1347 | "the locale will be set using environment variables.") |
1bbd0b84 | 1348 | #define FUNC_NAME s_scm_setlocale |
0f2d19dd | 1349 | { |
0f2d19dd JB |
1350 | char *clocale; |
1351 | char *rv; | |
1352 | ||
0f2d19dd JB |
1353 | if (SCM_UNBNDP (locale)) |
1354 | { | |
1355 | clocale = NULL; | |
1356 | } | |
1357 | else | |
1358 | { | |
a6d9e5ab | 1359 | SCM_VALIDATE_STRING (2, locale); |
a6d9e5ab | 1360 | clocale = SCM_STRING_CHARS (locale); |
0f2d19dd JB |
1361 | } |
1362 | ||
a55c2b68 | 1363 | rv = setlocale (scm_to_int (category), clocale); |
02b754d3 | 1364 | if (rv == NULL) |
1bbd0b84 | 1365 | SCM_SYSERROR; |
02b754d3 | 1366 | return scm_makfrom0str (rv); |
0f2d19dd | 1367 | } |
1bbd0b84 | 1368 | #undef FUNC_NAME |
f25f761d | 1369 | #endif /* HAVE_SETLOCALE */ |
0f2d19dd | 1370 | |
f25f761d | 1371 | #ifdef HAVE_MKNOD |
a1ec6916 | 1372 | SCM_DEFINE (scm_mknod, "mknod", 4, 0, 0, |
1bbd0b84 | 1373 | (SCM path, SCM type, SCM perms, SCM dev), |
b380b885 MD |
1374 | "Creates a new special file, such as a file corresponding to a device.\n" |
1375 | "@var{path} specifies the name of the file. @var{type} should\n" | |
1376 | "be one of the following symbols:\n" | |
1377 | "regular, directory, symlink, block-special, char-special,\n" | |
1378 | "fifo, or socket. @var{perms} (an integer) specifies the file permissions.\n" | |
1379 | "@var{dev} (an integer) specifies which device the special file refers\n" | |
1380 | "to. Its exact interpretation depends on the kind of special file\n" | |
1381 | "being created.\n\n" | |
1382 | "E.g.,\n" | |
1e6808ea | 1383 | "@lisp\n" |
09831f94 | 1384 | "(mknod \"/dev/fd0\" 'block-special #o660 (+ (* 2 256) 2))\n" |
1e6808ea | 1385 | "@end lisp\n\n" |
a3c8b9fc | 1386 | "The return value is unspecified.") |
1bbd0b84 | 1387 | #define FUNC_NAME s_scm_mknod |
0f2d19dd | 1388 | { |
0f2d19dd | 1389 | int val; |
19468eff | 1390 | char *p; |
82a76bdf | 1391 | int ctype = 0; |
19468eff | 1392 | |
a6d9e5ab | 1393 | SCM_VALIDATE_STRING (1, path); |
34d19ef6 | 1394 | SCM_VALIDATE_SYMBOL (2, type); |
19468eff | 1395 | |
86c991c2 | 1396 | p = SCM_SYMBOL_CHARS (type); |
19468eff GH |
1397 | if (strcmp (p, "regular") == 0) |
1398 | ctype = S_IFREG; | |
1399 | else if (strcmp (p, "directory") == 0) | |
1400 | ctype = S_IFDIR; | |
1401 | else if (strcmp (p, "symlink") == 0) | |
1402 | ctype = S_IFLNK; | |
1403 | else if (strcmp (p, "block-special") == 0) | |
1404 | ctype = S_IFBLK; | |
1405 | else if (strcmp (p, "char-special") == 0) | |
1406 | ctype = S_IFCHR; | |
1407 | else if (strcmp (p, "fifo") == 0) | |
1408 | ctype = S_IFIFO; | |
e655d034 | 1409 | #ifdef S_IFSOCK |
19468eff GH |
1410 | else if (strcmp (p, "socket") == 0) |
1411 | ctype = S_IFSOCK; | |
e655d034 | 1412 | #endif |
19468eff | 1413 | else |
34d19ef6 | 1414 | SCM_OUT_OF_RANGE (2, type); |
19468eff | 1415 | |
a55c2b68 MV |
1416 | SCM_SYSCALL (val = mknod (SCM_STRING_CHARS (path), |
1417 | ctype | scm_to_int (perms), | |
1418 | scm_to_int (dev))); | |
02b754d3 | 1419 | if (val != 0) |
1bbd0b84 | 1420 | SCM_SYSERROR; |
02b754d3 | 1421 | return SCM_UNSPECIFIED; |
0f2d19dd | 1422 | } |
1bbd0b84 | 1423 | #undef FUNC_NAME |
f25f761d | 1424 | #endif /* HAVE_MKNOD */ |
0f2d19dd | 1425 | |
f25f761d | 1426 | #ifdef HAVE_NICE |
a1ec6916 | 1427 | SCM_DEFINE (scm_nice, "nice", 1, 0, 0, |
1bbd0b84 | 1428 | (SCM incr), |
b380b885 MD |
1429 | "Increment the priority of the current process by @var{incr}. A higher\n" |
1430 | "priority value means that the process runs less often.\n" | |
1431 | "The return value is unspecified.") | |
1bbd0b84 | 1432 | #define FUNC_NAME s_scm_nice |
0f2d19dd | 1433 | { |
a55c2b68 | 1434 | if (nice (scm_to_int (incr)) != 0) |
1bbd0b84 | 1435 | SCM_SYSERROR; |
02b754d3 | 1436 | return SCM_UNSPECIFIED; |
0f2d19dd | 1437 | } |
1bbd0b84 | 1438 | #undef FUNC_NAME |
f25f761d | 1439 | #endif /* HAVE_NICE */ |
0f2d19dd | 1440 | |
f25f761d | 1441 | #ifdef HAVE_SYNC |
a1ec6916 | 1442 | SCM_DEFINE (scm_sync, "sync", 0, 0, 0, |
1bbd0b84 | 1443 | (), |
b380b885 MD |
1444 | "Flush the operating system disk buffers.\n" |
1445 | "The return value is unspecified.") | |
1bbd0b84 | 1446 | #define FUNC_NAME s_scm_sync |
0f2d19dd | 1447 | { |
0f2d19dd | 1448 | sync(); |
127ec750 | 1449 | return SCM_UNSPECIFIED; |
0f2d19dd | 1450 | } |
1bbd0b84 | 1451 | #undef FUNC_NAME |
f25f761d | 1452 | #endif /* HAVE_SYNC */ |
0f2d19dd | 1453 | |
33bea692 KR |
1454 | |
1455 | /* crypt() returns a pointer to a static buffer, so we use scm_i_misc_mutex | |
1456 | to avoid another thread overwriting it. A test program running crypt | |
1457 | continuously in two threads can be quickly seen tripping this problem. | |
1458 | crypt() is pretty slow normally, so a mutex shouldn't add much overhead. | |
1459 | ||
1460 | glibc has a thread-safe crypt_r, but (in version 2.3.2) it runs a lot | |
1461 | slower (about 5x) than plain crypt if you pass an uninitialized data | |
1462 | block each time. Presumably there's some one-time setups. The best way | |
1463 | to use crypt_r for parallel execution in multiple threads would probably | |
1464 | be to maintain a little pool of initialized crypt_data structures, take | |
1465 | one and use it, then return it to the pool. That pool could be garbage | |
1466 | collected so it didn't add permanently to memory use if only a few crypt | |
1467 | calls are made. But we expect crypt will be used rarely, and even more | |
1468 | rarely will there be any desire for lots of parallel execution on | |
1469 | multiple cpus. So for now we don't bother with anything fancy, just | |
1470 | ensure it works. */ | |
1471 | ||
b9a7b725 | 1472 | #if HAVE_CRYPT |
33bea692 | 1473 | SCM_DEFINE (scm_crypt, "crypt", 2, 0, 0, |
94e6d793 MG |
1474 | (SCM key, SCM salt), |
1475 | "Encrypt @var{key} using @var{salt} as the salt value to the\n" | |
9401323e | 1476 | "crypt(3) library call.") |
94e6d793 MG |
1477 | #define FUNC_NAME s_scm_crypt |
1478 | { | |
33bea692 | 1479 | SCM ret; |
94e6d793 MG |
1480 | SCM_VALIDATE_STRING (1, key); |
1481 | SCM_VALIDATE_STRING (2, salt); | |
94e6d793 | 1482 | |
33bea692 KR |
1483 | scm_frame_begin (0); |
1484 | scm_frame_unwind_handler ((void(*)(void*)) scm_mutex_unlock, | |
1485 | &scm_i_misc_mutex, | |
1486 | SCM_F_WIND_EXPLICITLY); | |
1487 | scm_mutex_lock (&scm_i_misc_mutex); | |
1488 | ||
1489 | ret = scm_makfrom0str (crypt (SCM_STRING_CHARS (key), | |
1490 | SCM_STRING_CHARS (salt))); | |
1491 | ||
1492 | scm_frame_end (); | |
1493 | return ret; | |
94e6d793 MG |
1494 | } |
1495 | #undef FUNC_NAME | |
b9a7b725 | 1496 | #endif /* HAVE_CRYPT */ |
94e6d793 MG |
1497 | |
1498 | #if HAVE_CHROOT | |
1499 | SCM_DEFINE (scm_chroot, "chroot", 1, 0, 0, | |
1500 | (SCM path), | |
1501 | "Change the root directory to that specified in @var{path}.\n" | |
1502 | "This directory will be used for path names beginning with\n" | |
1503 | "@file{/}. The root directory is inherited by all children\n" | |
1504 | "of the current process. Only the superuser may change the\n" | |
1505 | "root directory.") | |
1506 | #define FUNC_NAME s_scm_chroot | |
1507 | { | |
1508 | SCM_VALIDATE_STRING (1, path); | |
94e6d793 MG |
1509 | |
1510 | if (chroot (SCM_STRING_CHARS (path)) == -1) | |
1511 | SCM_SYSERROR; | |
1512 | return SCM_UNSPECIFIED; | |
1513 | } | |
1514 | #undef FUNC_NAME | |
1515 | #endif /* HAVE_CHROOT */ | |
1516 | ||
7beabedb MG |
1517 | |
1518 | #ifdef __MINGW32__ | |
1519 | /* Wrapper function to supplying `getlogin()' under Windows. */ | |
1520 | static char * getlogin (void) | |
1521 | { | |
1522 | static char user[256]; | |
1523 | static unsigned long len = 256; | |
1524 | ||
1525 | if (!GetUserName (user, &len)) | |
1526 | return NULL; | |
1527 | return user; | |
1528 | } | |
1529 | #endif /* __MINGW32__ */ | |
1530 | ||
1531 | ||
4f68365d | 1532 | #if defined (HAVE_GETLOGIN) || defined (__MINGW32__) |
94e6d793 MG |
1533 | SCM_DEFINE (scm_getlogin, "getlogin", 0, 0, 0, |
1534 | (void), | |
1535 | "Return a string containing the name of the user logged in on\n" | |
1536 | "the controlling terminal of the process, or @code{#f} if this\n" | |
1537 | "information cannot be obtained.") | |
1538 | #define FUNC_NAME s_scm_getlogin | |
1539 | { | |
1540 | char * p; | |
1541 | ||
1542 | p = getlogin (); | |
1543 | if (!p || !*p) | |
1544 | return SCM_BOOL_F; | |
1545 | return scm_makfrom0str (p); | |
1546 | } | |
1547 | #undef FUNC_NAME | |
1548 | #endif /* HAVE_GETLOGIN */ | |
1549 | ||
1550 | #if HAVE_CUSERID | |
1551 | SCM_DEFINE (scm_cuserid, "cuserid", 0, 0, 0, | |
1552 | (void), | |
1553 | "Return a string containing a user name associated with the\n" | |
1554 | "effective user id of the process. Return @code{#f} if this\n" | |
1555 | "information cannot be obtained.") | |
1556 | #define FUNC_NAME s_scm_cuserid | |
1557 | { | |
1b317eb1 | 1558 | char buf[L_cuserid]; |
94e6d793 MG |
1559 | char * p; |
1560 | ||
1b317eb1 | 1561 | p = cuserid (buf); |
94e6d793 MG |
1562 | if (!p || !*p) |
1563 | return SCM_BOOL_F; | |
1564 | return scm_makfrom0str (p); | |
1565 | } | |
1566 | #undef FUNC_NAME | |
1567 | #endif /* HAVE_CUSERID */ | |
1568 | ||
1569 | #if HAVE_GETPRIORITY | |
1570 | SCM_DEFINE (scm_getpriority, "getpriority", 2, 0, 0, | |
1571 | (SCM which, SCM who), | |
1572 | "Return the scheduling priority of the process, process group\n" | |
1573 | "or user, as indicated by @var{which} and @var{who}. @var{which}\n" | |
1574 | "is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}\n" | |
1575 | "or @code{PRIO_USER}, and @var{who} is interpreted relative to\n" | |
1576 | "@var{which} (a process identifier for @code{PRIO_PROCESS},\n" | |
1577 | "process group identifier for @code{PRIO_PGRP}, and a user\n" | |
1578 | "identifier for @code{PRIO_USER}. A zero value of @var{who}\n" | |
1579 | "denotes the current process, process group, or user. Return\n" | |
1580 | "the highest priority (lowest numerical value) of any of the\n" | |
1581 | "specified processes.") | |
1582 | #define FUNC_NAME s_scm_getpriority | |
1583 | { | |
1584 | int cwhich, cwho, ret; | |
1585 | ||
a55c2b68 MV |
1586 | cwhich = scm_to_int (which); |
1587 | cwho = scm_to_int (who); | |
94e6d793 MG |
1588 | |
1589 | /* We have to clear errno and examine it later, because -1 is a | |
1590 | legal return value for getpriority(). */ | |
1591 | errno = 0; | |
1592 | ret = getpriority (cwhich, cwho); | |
1593 | if (errno != 0) | |
1594 | SCM_SYSERROR; | |
a55c2b68 | 1595 | return scm_from_int (ret); |
94e6d793 MG |
1596 | } |
1597 | #undef FUNC_NAME | |
1598 | #endif /* HAVE_GETPRIORITY */ | |
1599 | ||
1600 | #if HAVE_SETPRIORITY | |
1601 | SCM_DEFINE (scm_setpriority, "setpriority", 3, 0, 0, | |
1602 | (SCM which, SCM who, SCM prio), | |
1603 | "Set the scheduling priority of the process, process group\n" | |
1604 | "or user, as indicated by @var{which} and @var{who}. @var{which}\n" | |
1605 | "is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}\n" | |
1606 | "or @code{PRIO_USER}, and @var{who} is interpreted relative to\n" | |
1607 | "@var{which} (a process identifier for @code{PRIO_PROCESS},\n" | |
1608 | "process group identifier for @code{PRIO_PGRP}, and a user\n" | |
1609 | "identifier for @code{PRIO_USER}. A zero value of @var{who}\n" | |
1610 | "denotes the current process, process group, or user.\n" | |
1611 | "@var{prio} is a value in the range -20 and 20, the default\n" | |
1612 | "priority is 0; lower priorities cause more favorable\n" | |
1613 | "scheduling. Sets the priority of all of the specified\n" | |
1614 | "processes. Only the super-user may lower priorities.\n" | |
1615 | "The return value is not specified.") | |
1616 | #define FUNC_NAME s_scm_setpriority | |
1617 | { | |
1618 | int cwhich, cwho, cprio; | |
1619 | ||
a55c2b68 MV |
1620 | cwhich = scm_to_int (which); |
1621 | cwho = scm_to_int (who); | |
1622 | cprio = scm_to_int (prio); | |
94e6d793 MG |
1623 | |
1624 | if (setpriority (cwhich, cwho, cprio) == -1) | |
1625 | SCM_SYSERROR; | |
1626 | return SCM_UNSPECIFIED; | |
1627 | } | |
1628 | #undef FUNC_NAME | |
1629 | #endif /* HAVE_SETPRIORITY */ | |
1630 | ||
1631 | #if HAVE_GETPASS | |
1632 | SCM_DEFINE (scm_getpass, "getpass", 1, 0, 0, | |
1633 | (SCM prompt), | |
1634 | "Display @var{prompt} to the standard error output and read\n" | |
1635 | "a password from @file{/dev/tty}. If this file is not\n" | |
1636 | "accessible, it reads from standard input. The password may be\n" | |
1637 | "up to 127 characters in length. Additional characters and the\n" | |
1638 | "terminating newline character are discarded. While reading\n" | |
1639 | "the password, echoing and the generation of signals by special\n" | |
1640 | "characters is disabled.") | |
1641 | #define FUNC_NAME s_scm_getpass | |
1642 | { | |
1643 | char * p; | |
1644 | SCM passwd; | |
1645 | ||
1646 | SCM_VALIDATE_STRING (1, prompt); | |
94e6d793 MG |
1647 | |
1648 | p = getpass(SCM_STRING_CHARS (prompt)); | |
1649 | passwd = scm_makfrom0str (p); | |
1650 | ||
1651 | /* Clear out the password in the static buffer. */ | |
1652 | memset (p, 0, strlen (p)); | |
1653 | ||
1654 | return passwd; | |
1655 | } | |
1656 | #undef FUNC_NAME | |
1657 | #endif /* HAVE_GETPASS */ | |
1658 | ||
8f99e3f3 SJ |
1659 | /* Wrapper function for flock() support under M$-Windows. */ |
1660 | #ifdef __MINGW32__ | |
1661 | # include <io.h> | |
1662 | # include <sys/locking.h> | |
1663 | # include <errno.h> | |
1664 | # ifndef _LK_UNLCK | |
1665 | /* Current MinGW package fails to define this. *sigh* */ | |
1666 | # define _LK_UNLCK 0 | |
1667 | # endif | |
1668 | # define LOCK_EX 1 | |
1669 | # define LOCK_UN 2 | |
1670 | # define LOCK_SH 4 | |
1671 | # define LOCK_NB 8 | |
1672 | ||
1673 | static int flock (int fd, int operation) | |
1674 | { | |
1675 | long pos, len; | |
1676 | int ret, err; | |
1677 | ||
1678 | /* Disable invalid arguments. */ | |
1679 | if (((operation & (LOCK_EX | LOCK_SH)) == (LOCK_EX | LOCK_SH)) || | |
1680 | ((operation & (LOCK_EX | LOCK_UN)) == (LOCK_EX | LOCK_UN)) || | |
1681 | ((operation & (LOCK_SH | LOCK_UN)) == (LOCK_SH | LOCK_UN))) | |
1682 | { | |
1683 | errno = EINVAL; | |
1684 | return -1; | |
1685 | } | |
1686 | ||
1687 | /* Determine mode of operation and discard unsupported ones. */ | |
1688 | if (operation == (LOCK_NB | LOCK_EX)) | |
1689 | operation = _LK_NBLCK; | |
1690 | else if (operation & LOCK_UN) | |
1691 | operation = _LK_UNLCK; | |
1692 | else if (operation == LOCK_EX) | |
1693 | operation = _LK_LOCK; | |
1694 | else | |
1695 | { | |
1696 | errno = EINVAL; | |
1697 | return -1; | |
1698 | } | |
1699 | ||
1700 | /* Save current file pointer and seek to beginning. */ | |
1701 | if ((pos = lseek (fd, 0, SEEK_CUR)) == -1 || (len = filelength (fd)) == -1) | |
1702 | return -1; | |
1703 | lseek (fd, 0L, SEEK_SET); | |
1704 | ||
1705 | /* Deadlock if necessary. */ | |
1706 | do | |
1707 | { | |
1708 | ret = _locking (fd, operation, len); | |
1709 | } | |
1710 | while (ret == -1 && errno == EDEADLOCK); | |
1711 | ||
1712 | /* Produce meaningful error message. */ | |
1713 | if (errno == EACCES && operation == _LK_NBLCK) | |
1714 | err = EDEADLOCK; | |
1715 | else | |
1716 | err = errno; | |
1717 | ||
1718 | /* Return to saved file position pointer. */ | |
1719 | lseek (fd, pos, SEEK_SET); | |
1720 | errno = err; | |
1721 | return ret; | |
1722 | } | |
1723 | #endif /* __MINGW32__ */ | |
1724 | ||
1725 | #if HAVE_FLOCK || defined (__MINGW32__) | |
94e6d793 MG |
1726 | SCM_DEFINE (scm_flock, "flock", 2, 0, 0, |
1727 | (SCM file, SCM operation), | |
1728 | "Apply or remove an advisory lock on an open file.\n" | |
1729 | "@var{operation} specifies the action to be done:\n" | |
1730 | "@table @code\n" | |
1731 | "@item LOCK_SH\n" | |
1732 | "Shared lock. More than one process may hold a shared lock\n" | |
1733 | "for a given file at a given time.\n" | |
1734 | "@item LOCK_EX\n" | |
1735 | "Exclusive lock. Only one process may hold an exclusive lock\n" | |
1736 | "for a given file at a given time.\n" | |
1737 | "@item LOCK_UN\n" | |
1738 | "Unlock the file.\n" | |
1739 | "@item LOCK_NB\n" | |
1740 | "Don't block when locking. May be specified by bitwise OR'ing\n" | |
1741 | "it to one of the other operations.\n" | |
1742 | "@end table\n" | |
1743 | "The return value is not specified. @var{file} may be an open\n" | |
bb2c02f2 | 1744 | "file descriptor or an open file descriptor port.") |
94e6d793 MG |
1745 | #define FUNC_NAME s_scm_flock |
1746 | { | |
a55c2b68 | 1747 | int fdes; |
94e6d793 | 1748 | |
a55c2b68 MV |
1749 | if (scm_is_integer (file)) |
1750 | fdes = scm_to_int (file); | |
94e6d793 MG |
1751 | else |
1752 | { | |
1753 | SCM_VALIDATE_OPFPORT (2, file); | |
1754 | ||
1755 | fdes = SCM_FPORT_FDES (file); | |
1756 | } | |
a55c2b68 | 1757 | if (flock (fdes, scm_to_int (operation)) == -1) |
94e6d793 MG |
1758 | SCM_SYSERROR; |
1759 | return SCM_UNSPECIFIED; | |
1760 | } | |
1761 | #undef FUNC_NAME | |
1762 | #endif /* HAVE_FLOCK */ | |
1763 | ||
1764 | #if HAVE_SETHOSTNAME | |
1765 | SCM_DEFINE (scm_sethostname, "sethostname", 1, 0, 0, | |
1766 | (SCM name), | |
1767 | "Set the host name of the current processor to @var{name}. May\n" | |
1768 | "only be used by the superuser. The return value is not\n" | |
1769 | "specified.") | |
1770 | #define FUNC_NAME s_scm_sethostname | |
1771 | { | |
1772 | SCM_VALIDATE_STRING (1, name); | |
94e6d793 MG |
1773 | |
1774 | if (sethostname (SCM_STRING_CHARS (name), SCM_STRING_LENGTH (name)) == -1) | |
1775 | SCM_SYSERROR; | |
1776 | return SCM_UNSPECIFIED; | |
1777 | } | |
1778 | #undef FUNC_NAME | |
1779 | #endif /* HAVE_SETHOSTNAME */ | |
1780 | ||
b28f5b3c | 1781 | |
94e6d793 MG |
1782 | #if HAVE_GETHOSTNAME |
1783 | SCM_DEFINE (scm_gethostname, "gethostname", 0, 0, 0, | |
1784 | (void), | |
1785 | "Return the host name of the current processor.") | |
1786 | #define FUNC_NAME s_scm_gethostname | |
1787 | { | |
b28f5b3c DH |
1788 | #ifdef MAXHOSTNAMELEN |
1789 | ||
1790 | /* Various systems define MAXHOSTNAMELEN (including Solaris in fact). | |
1791 | * On GNU/Linux this doesn't include the terminating '\0', hence "+ 1". */ | |
1792 | const int len = MAXHOSTNAMELEN + 1; | |
1793 | char *const p = scm_malloc (len); | |
1794 | const int res = gethostname (p, len); | |
1795 | ||
1796 | scm_frame_begin (0); | |
1797 | scm_frame_unwind_handler (free, p, 0); | |
1798 | ||
1799 | #else | |
94e6d793 | 1800 | |
0eaf1055 | 1801 | /* Default 256 is for Solaris, under Linux ENAMETOOLONG is returned if not |
b28f5b3c DH |
1802 | * large enough. SUSv2 specifies 255 maximum too, apparently. */ |
1803 | int len = 256; | |
1804 | int res; | |
1805 | char *p; | |
0eaf1055 | 1806 | |
b28f5b3c | 1807 | # if HAVE_SYSCONF && defined (_SC_HOST_NAME_MAX) |
0eaf1055 KR |
1808 | |
1809 | /* POSIX specifies the HOST_NAME_MAX system parameter for the max size, | |
b28f5b3c DH |
1810 | * which may reflect a particular kernel configuration. |
1811 | * Must watch out for this existing but giving -1, as happens for instance | |
1812 | * in gnu/linux glibc 2.3.2. */ | |
0eaf1055 | 1813 | { |
b28f5b3c | 1814 | const long int n = sysconf (_SC_HOST_NAME_MAX); |
0eaf1055 KR |
1815 | if (n != -1L) |
1816 | len = n; | |
1817 | } | |
b28f5b3c DH |
1818 | |
1819 | # endif | |
1820 | ||
1821 | p = scm_malloc (len); | |
1822 | ||
1823 | scm_frame_begin (0); | |
1824 | scm_frame_unwind_handler (free, p, 0); | |
0eaf1055 | 1825 | |
94e6d793 MG |
1826 | res = gethostname (p, len); |
1827 | while (res == -1 && errno == ENAMETOOLONG) | |
1828 | { | |
94e6d793 | 1829 | len *= 2; |
b28f5b3c DH |
1830 | |
1831 | /* scm_realloc may throw an exception. */ | |
1832 | p = scm_realloc (p, len); | |
94e6d793 MG |
1833 | res = gethostname (p, len); |
1834 | } | |
b28f5b3c DH |
1835 | |
1836 | #endif | |
1837 | ||
94e6d793 MG |
1838 | if (res == -1) |
1839 | { | |
b28f5b3c DH |
1840 | const int save_errno = errno; |
1841 | ||
1842 | // No guile exceptions can occur before we have freed p's memory. | |
1843 | scm_frame_end (); | |
4c9419ac | 1844 | free (p); |
b28f5b3c | 1845 | |
22865124 | 1846 | errno = save_errno; |
94e6d793 MG |
1847 | SCM_SYSERROR; |
1848 | } | |
b28f5b3c DH |
1849 | else |
1850 | { | |
1851 | /* scm_makfrom0str may throw an exception. */ | |
1852 | const SCM name = scm_makfrom0str (p); | |
1853 | ||
1854 | // No guile exceptions can occur before we have freed p's memory. | |
1855 | scm_frame_end (); | |
1856 | free (p); | |
1857 | ||
1858 | return name; | |
1859 | } | |
94e6d793 MG |
1860 | } |
1861 | #undef FUNC_NAME | |
1862 | #endif /* HAVE_GETHOSTNAME */ | |
1863 | ||
b28f5b3c | 1864 | |
0f2d19dd JB |
1865 | void |
1866 | scm_init_posix () | |
0f2d19dd JB |
1867 | { |
1868 | scm_add_feature ("posix"); | |
1869 | #ifdef HAVE_GETEUID | |
1870 | scm_add_feature ("EIDs"); | |
1871 | #endif | |
1872 | #ifdef WAIT_ANY | |
e11e83f3 | 1873 | scm_c_define ("WAIT_ANY", scm_from_int (WAIT_ANY)); |
0f2d19dd JB |
1874 | #endif |
1875 | #ifdef WAIT_MYPGRP | |
e11e83f3 | 1876 | scm_c_define ("WAIT_MYPGRP", scm_from_int (WAIT_MYPGRP)); |
0f2d19dd JB |
1877 | #endif |
1878 | #ifdef WNOHANG | |
e11e83f3 | 1879 | scm_c_define ("WNOHANG", scm_from_int (WNOHANG)); |
0f2d19dd JB |
1880 | #endif |
1881 | #ifdef WUNTRACED | |
e11e83f3 | 1882 | scm_c_define ("WUNTRACED", scm_from_int (WUNTRACED)); |
0f2d19dd JB |
1883 | #endif |
1884 | ||
0f2d19dd | 1885 | /* access() symbols. */ |
e11e83f3 MV |
1886 | scm_c_define ("R_OK", scm_from_int (R_OK)); |
1887 | scm_c_define ("W_OK", scm_from_int (W_OK)); | |
1888 | scm_c_define ("X_OK", scm_from_int (X_OK)); | |
1889 | scm_c_define ("F_OK", scm_from_int (F_OK)); | |
0f2d19dd JB |
1890 | |
1891 | #ifdef LC_COLLATE | |
e11e83f3 | 1892 | scm_c_define ("LC_COLLATE", scm_from_int (LC_COLLATE)); |
0f2d19dd JB |
1893 | #endif |
1894 | #ifdef LC_CTYPE | |
e11e83f3 | 1895 | scm_c_define ("LC_CTYPE", scm_from_int (LC_CTYPE)); |
0f2d19dd JB |
1896 | #endif |
1897 | #ifdef LC_MONETARY | |
e11e83f3 | 1898 | scm_c_define ("LC_MONETARY", scm_from_int (LC_MONETARY)); |
0f2d19dd JB |
1899 | #endif |
1900 | #ifdef LC_NUMERIC | |
e11e83f3 | 1901 | scm_c_define ("LC_NUMERIC", scm_from_int (LC_NUMERIC)); |
0f2d19dd JB |
1902 | #endif |
1903 | #ifdef LC_TIME | |
e11e83f3 | 1904 | scm_c_define ("LC_TIME", scm_from_int (LC_TIME)); |
0f2d19dd JB |
1905 | #endif |
1906 | #ifdef LC_MESSAGES | |
e11e83f3 | 1907 | scm_c_define ("LC_MESSAGES", scm_from_int (LC_MESSAGES)); |
0f2d19dd JB |
1908 | #endif |
1909 | #ifdef LC_ALL | |
e11e83f3 | 1910 | scm_c_define ("LC_ALL", scm_from_int (LC_ALL)); |
0f2d19dd | 1911 | #endif |
bd9e24b3 | 1912 | #ifdef PIPE_BUF |
b9bd8526 | 1913 | scm_c_define ("PIPE_BUF", scm_from_long (PIPE_BUF)); |
bd9e24b3 GH |
1914 | #endif |
1915 | ||
94e6d793 | 1916 | #ifdef PRIO_PROCESS |
e11e83f3 | 1917 | scm_c_define ("PRIO_PROCESS", scm_from_int (PRIO_PROCESS)); |
94e6d793 MG |
1918 | #endif |
1919 | #ifdef PRIO_PGRP | |
e11e83f3 | 1920 | scm_c_define ("PRIO_PGRP", scm_from_int (PRIO_PGRP)); |
94e6d793 MG |
1921 | #endif |
1922 | #ifdef PRIO_USER | |
e11e83f3 | 1923 | scm_c_define ("PRIO_USER", scm_from_int (PRIO_USER)); |
94e6d793 MG |
1924 | #endif |
1925 | ||
1926 | #ifdef LOCK_SH | |
e11e83f3 | 1927 | scm_c_define ("LOCK_SH", scm_from_int (LOCK_SH)); |
94e6d793 MG |
1928 | #endif |
1929 | #ifdef LOCK_EX | |
e11e83f3 | 1930 | scm_c_define ("LOCK_EX", scm_from_int (LOCK_EX)); |
94e6d793 MG |
1931 | #endif |
1932 | #ifdef LOCK_UN | |
e11e83f3 | 1933 | scm_c_define ("LOCK_UN", scm_from_int (LOCK_UN)); |
94e6d793 MG |
1934 | #endif |
1935 | #ifdef LOCK_NB | |
e11e83f3 | 1936 | scm_c_define ("LOCK_NB", scm_from_int (LOCK_NB)); |
94e6d793 MG |
1937 | #endif |
1938 | ||
a0599745 MD |
1939 | #include "libguile/cpp_sig_symbols.c" |
1940 | #include "libguile/posix.x" | |
0f2d19dd | 1941 | } |
89e00824 ML |
1942 | |
1943 | /* | |
1944 | Local Variables: | |
1945 | c-file-style: "gnu" | |
1946 | End: | |
1947 | */ |