Commit | Line | Data |
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5b7ecf1b | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2005, 2006, 2007 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 | |
92205699 | 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
73be1d9e | 16 | */ |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
0f2d19dd | 19 | \f |
2546b5c3 RB |
20 | #if HAVE_CONFIG_H |
21 | # include <config.h> | |
22 | #endif | |
0f2d19dd JB |
23 | |
24 | #include <stdio.h> | |
e6e2e95a MD |
25 | #include <errno.h> |
26 | ||
a0599745 | 27 | #include "libguile/_scm.h" |
b28f5b3c | 28 | #include "libguile/dynwind.h" |
a0599745 MD |
29 | #include "libguile/fports.h" |
30 | #include "libguile/scmsigs.h" | |
31 | #include "libguile/feature.h" | |
32 | #include "libguile/strings.h" | |
c44ca4fe | 33 | #include "libguile/srfi-13.h" |
a17d2654 | 34 | #include "libguile/srfi-14.h" |
a0599745 | 35 | #include "libguile/vectors.h" |
c96d76b8 | 36 | #include "libguile/lang.h" |
a0599745 MD |
37 | |
38 | #include "libguile/validate.h" | |
39 | #include "libguile/posix.h" | |
b89c4943 | 40 | #include "libguile/gettext.h" |
9de87eea | 41 | #include "libguile/threads.h" |
0f2d19dd JB |
42 | \f |
43 | ||
02b754d3 GH |
44 | #ifdef HAVE_STRING_H |
45 | #include <string.h> | |
46 | #endif | |
0f2d19dd JB |
47 | #ifdef TIME_WITH_SYS_TIME |
48 | # include <sys/time.h> | |
49 | # include <time.h> | |
50 | #else | |
51 | # if HAVE_SYS_TIME_H | |
52 | # include <sys/time.h> | |
53 | # else | |
54 | # include <time.h> | |
55 | # endif | |
56 | #endif | |
57 | ||
58 | #ifdef HAVE_UNISTD_H | |
59 | #include <unistd.h> | |
95b88819 GH |
60 | #else |
61 | #ifndef ttyname | |
62 | extern char *ttyname(); | |
63 | #endif | |
0f2d19dd JB |
64 | #endif |
65 | ||
3594582b | 66 | #ifdef LIBC_H_WITH_UNISTD_H |
bab0f4e5 JB |
67 | #include <libc.h> |
68 | #endif | |
69 | ||
8cc71382 | 70 | #include <sys/types.h> |
0f2d19dd JB |
71 | #include <sys/stat.h> |
72 | #include <fcntl.h> | |
73 | ||
82893676 | 74 | #ifdef HAVE_PWD_H |
0f2d19dd | 75 | #include <pwd.h> |
82893676 MG |
76 | #endif |
77 | #ifdef HAVE_IO_H | |
78 | #include <io.h> | |
79 | #endif | |
f87c105a | 80 | #ifdef HAVE_WINSOCK2_H |
82893676 MG |
81 | #include <winsock2.h> |
82 | #endif | |
83 | ||
84 | #ifdef __MINGW32__ | |
85 | /* Some defines for Windows here. */ | |
7beabedb | 86 | # include <process.h> |
82893676 MG |
87 | # define pipe(fd) _pipe (fd, 256, O_BINARY) |
88 | #endif /* __MINGW32__ */ | |
0f2d19dd JB |
89 | |
90 | #if HAVE_SYS_WAIT_H | |
91 | # include <sys/wait.h> | |
92 | #endif | |
93 | #ifndef WEXITSTATUS | |
94 | # define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8) | |
95 | #endif | |
96 | #ifndef WIFEXITED | |
97 | # define WIFEXITED(stat_val) (((stat_val) & 255) == 0) | |
98 | #endif | |
99 | ||
100 | #include <signal.h> | |
101 | ||
0f2d19dd JB |
102 | extern char ** environ; |
103 | ||
82893676 | 104 | #ifdef HAVE_GRP_H |
0f2d19dd | 105 | #include <grp.h> |
82893676 MG |
106 | #endif |
107 | #ifdef HAVE_SYS_UTSNAME_H | |
0f2d19dd | 108 | #include <sys/utsname.h> |
82893676 | 109 | #endif |
0f2d19dd | 110 | |
0f2d19dd JB |
111 | #ifdef HAVE_SETLOCALE |
112 | #include <locale.h> | |
113 | #endif | |
114 | ||
b89c4943 LC |
115 | #if (defined HAVE_NEWLOCALE) && (defined HAVE_STRCOLL_L) |
116 | # define USE_GNU_LOCALE_API | |
117 | #endif | |
118 | ||
a2f00b9b LC |
119 | #if (defined USE_GNU_LOCALE_API) && (defined HAVE_XLOCALE_H) |
120 | # include <xlocale.h> | |
121 | #endif | |
122 | ||
b9a7b725 | 123 | #if HAVE_CRYPT_H |
94e6d793 MG |
124 | # include <crypt.h> |
125 | #endif | |
126 | ||
0eaf1055 KR |
127 | #ifdef HAVE_NETDB_H |
128 | #include <netdb.h> /* for MAXHOSTNAMELEN on Solaris */ | |
129 | #endif | |
130 | ||
131 | #ifdef HAVE_SYS_PARAM_H | |
132 | #include <sys/param.h> /* for MAXHOSTNAMELEN */ | |
133 | #endif | |
134 | ||
94e6d793 MG |
135 | #if HAVE_SYS_RESOURCE_H |
136 | # include <sys/resource.h> | |
137 | #endif | |
138 | ||
139 | #if HAVE_SYS_FILE_H | |
140 | # include <sys/file.h> | |
141 | #endif | |
142 | ||
eb7e1603 KR |
143 | #if HAVE_CRT_EXTERNS_H |
144 | #include <crt_externs.h> /* for Darwin _NSGetEnviron */ | |
145 | #endif | |
146 | ||
bab0f4e5 JB |
147 | /* Some Unix systems don't define these. CPP hair is dangerous, but |
148 | this seems safe enough... */ | |
149 | #ifndef R_OK | |
150 | #define R_OK 4 | |
151 | #endif | |
152 | ||
153 | #ifndef W_OK | |
154 | #define W_OK 2 | |
155 | #endif | |
156 | ||
157 | #ifndef X_OK | |
158 | #define X_OK 1 | |
159 | #endif | |
160 | ||
161 | #ifndef F_OK | |
162 | #define F_OK 0 | |
163 | #endif | |
398609a5 | 164 | |
8ab3d8a0 KR |
165 | /* No prototype for this on Solaris 10. The man page says it's in |
166 | <unistd.h> ... but it lies. */ | |
167 | #if ! HAVE_DECL_SETHOSTNAME | |
168 | int sethostname (char *name, size_t namelen); | |
169 | #endif | |
170 | ||
398609a5 JB |
171 | /* On NextStep, <utime.h> doesn't define struct utime, unless we |
172 | #define _POSIX_SOURCE before #including it. I think this is less | |
173 | of a kludge than defining struct utimbuf ourselves. */ | |
174 | #ifdef UTIMBUF_NEEDS_POSIX | |
175 | #define _POSIX_SOURCE | |
176 | #endif | |
177 | ||
178 | #ifdef HAVE_SYS_UTIME_H | |
179 | #include <sys/utime.h> | |
180 | #endif | |
181 | ||
182 | #ifdef HAVE_UTIME_H | |
183 | #include <utime.h> | |
184 | #endif | |
185 | ||
186 | /* Please don't add any more #includes or #defines here. The hack | |
187 | above means that _POSIX_SOURCE may be #defined, which will | |
eb7e1603 KR |
188 | encourage header files to do strange things. |
189 | ||
190 | FIXME: Maybe should undef _POSIX_SOURCE after it's done its job. | |
191 | ||
192 | FIXME: Probably should do all the includes first, then all the fallback | |
193 | declarations and defines, in case things are not in the header we | |
194 | imagine. */ | |
195 | ||
196 | ||
197 | ||
198 | ||
199 | /* On Apple Darwin in a shared library there's no "environ" to access | |
200 | directly, instead the address of that variable must be obtained with | |
201 | _NSGetEnviron(). */ | |
202 | #if HAVE__NSGETENVIRON && defined (PIC) | |
203 | #define environ (*_NSGetEnviron()) | |
204 | #endif | |
398609a5 | 205 | |
0f2d19dd | 206 | \f |
f015614a MV |
207 | |
208 | /* Two often used patterns | |
209 | */ | |
210 | ||
211 | #define WITH_STRING(str,cstr,code) \ | |
212 | do { \ | |
213 | char *cstr = scm_to_locale_string (str); \ | |
214 | code; \ | |
215 | free (cstr); \ | |
216 | } while (0) | |
217 | ||
218 | #define STRING_SYSCALL(str,cstr,code) \ | |
219 | do { \ | |
220 | int eno; \ | |
221 | char *cstr = scm_to_locale_string (str); \ | |
222 | SCM_SYSCALL (code); \ | |
223 | eno = errno; free (cstr); errno = eno; \ | |
224 | } while (0) | |
225 | ||
226 | ||
227 | \f | |
bc45012d JB |
228 | SCM_SYMBOL (sym_read_pipe, "read pipe"); |
229 | SCM_SYMBOL (sym_write_pipe, "write pipe"); | |
0f2d19dd | 230 | |
a1ec6916 | 231 | SCM_DEFINE (scm_pipe, "pipe", 0, 0, 0, |
1bbd0b84 | 232 | (), |
1e6808ea MG |
233 | "Return a newly created pipe: a pair of ports which are linked\n" |
234 | "together on the local machine. The @emph{car} is the input\n" | |
235 | "port and the @emph{cdr} is the output port. Data written (and\n" | |
236 | "flushed) to the output port can be read from the input port.\n" | |
237 | "Pipes are commonly used for communication with a newly forked\n" | |
238 | "child process. The need to flush the output port can be\n" | |
239 | "avoided by making it unbuffered using @code{setvbuf}.\n" | |
240 | "\n" | |
241 | "Writes occur atomically provided the size of the data in bytes\n" | |
242 | "is not greater than the value of @code{PIPE_BUF}. Note that\n" | |
243 | "the output port is likely to block if too much data (typically\n" | |
244 | "equal to @code{PIPE_BUF}) has been written but not yet read\n" | |
245 | "from the input port.") | |
1bbd0b84 | 246 | #define FUNC_NAME s_scm_pipe |
0f2d19dd JB |
247 | { |
248 | int fd[2], rv; | |
0f2d19dd | 249 | SCM p_rd, p_wt; |
02b754d3 | 250 | |
0f2d19dd JB |
251 | rv = pipe (fd); |
252 | if (rv) | |
1bbd0b84 | 253 | SCM_SYSERROR; |
ee149d03 JB |
254 | |
255 | p_rd = scm_fdes_to_port (fd[0], "r", sym_read_pipe); | |
256 | p_wt = scm_fdes_to_port (fd[1], "w", sym_write_pipe); | |
0f2d19dd JB |
257 | return scm_cons (p_rd, p_wt); |
258 | } | |
1bbd0b84 | 259 | #undef FUNC_NAME |
0f2d19dd JB |
260 | |
261 | ||
0e958795 | 262 | #ifdef HAVE_GETGROUPS |
a1ec6916 | 263 | SCM_DEFINE (scm_getgroups, "getgroups", 0, 0, 0, |
1bbd0b84 | 264 | (), |
1e6808ea | 265 | "Return a vector of integers representing the current\n" |
bb2c02f2 | 266 | "supplementary group IDs.") |
1bbd0b84 | 267 | #define FUNC_NAME s_scm_getgroups |
0f2d19dd | 268 | { |
1d1559ce | 269 | SCM result; |
66460dfb | 270 | int ngroups; |
1be6b49c | 271 | size_t size; |
66460dfb DH |
272 | GETGROUPS_T *groups; |
273 | ||
274 | ngroups = getgroups (0, NULL); | |
275 | if (ngroups <= 0) | |
1bbd0b84 | 276 | SCM_SYSERROR; |
66460dfb DH |
277 | |
278 | size = ngroups * sizeof (GETGROUPS_T); | |
4c9419ac | 279 | groups = scm_malloc (size); |
66460dfb DH |
280 | getgroups (ngroups, groups); |
281 | ||
f360a962 MV |
282 | result = scm_c_make_vector (ngroups, SCM_BOOL_F); |
283 | while (--ngroups >= 0) | |
4057a3e0 | 284 | SCM_SIMPLE_VECTOR_SET (result, ngroups, scm_from_ulong (groups[ngroups])); |
66460dfb | 285 | |
4c9419ac | 286 | free (groups); |
1d1559ce | 287 | return result; |
1bbd0b84 GB |
288 | } |
289 | #undef FUNC_NAME | |
0e958795 | 290 | #endif |
0f2d19dd | 291 | |
f360a962 MV |
292 | #ifdef HAVE_SETGROUPS |
293 | SCM_DEFINE (scm_setgroups, "setgroups", 1, 0, 0, | |
294 | (SCM group_vec), | |
fcc3adc2 KR |
295 | "Set the current set of supplementary group IDs to the integers\n" |
296 | "in the given vector @var{vec}. The return value is\n" | |
297 | "unspecified.\n" | |
298 | "\n" | |
299 | "Generally only the superuser can set the process group IDs.") | |
f360a962 MV |
300 | #define FUNC_NAME s_scm_setgroups |
301 | { | |
302 | size_t ngroups; | |
303 | size_t size; | |
304 | size_t i; | |
305 | int result; | |
306 | int save_errno; | |
307 | GETGROUPS_T *groups; | |
308 | ||
309 | SCM_VALIDATE_VECTOR (SCM_ARG1, group_vec); | |
310 | ||
4057a3e0 | 311 | ngroups = SCM_SIMPLE_VECTOR_LENGTH (group_vec); |
f360a962 MV |
312 | |
313 | /* validate before allocating, so we don't have to worry about leaks */ | |
314 | for (i = 0; i < ngroups; i++) | |
315 | { | |
316 | unsigned long ulong_gid; | |
317 | GETGROUPS_T gid; | |
4057a3e0 MV |
318 | SCM_VALIDATE_ULONG_COPY (1, SCM_SIMPLE_VECTOR_REF (group_vec, i), |
319 | ulong_gid); | |
f360a962 MV |
320 | gid = ulong_gid; |
321 | if (gid != ulong_gid) | |
4057a3e0 | 322 | SCM_OUT_OF_RANGE (1, SCM_SIMPLE_VECTOR_REF (group_vec, i)); |
f360a962 MV |
323 | } |
324 | ||
325 | size = ngroups * sizeof (GETGROUPS_T); | |
2eb78d06 | 326 | if (size / sizeof (GETGROUPS_T) != ngroups) |
e11e83f3 | 327 | SCM_OUT_OF_RANGE (SCM_ARG1, scm_from_int (ngroups)); |
f360a962 MV |
328 | groups = scm_malloc (size); |
329 | for(i = 0; i < ngroups; i++) | |
4057a3e0 | 330 | groups [i] = SCM_NUM2ULONG (1, SCM_SIMPLE_VECTOR_REF (group_vec, i)); |
f360a962 MV |
331 | |
332 | result = setgroups (ngroups, groups); | |
333 | save_errno = errno; /* don't let free() touch errno */ | |
334 | free (groups); | |
335 | errno = save_errno; | |
336 | if (result < 0) | |
337 | SCM_SYSERROR; | |
338 | return SCM_UNSPECIFIED; | |
339 | } | |
340 | #undef FUNC_NAME | |
341 | #endif | |
342 | ||
82893676 | 343 | #ifdef HAVE_GETPWENT |
a1ec6916 | 344 | SCM_DEFINE (scm_getpwuid, "getpw", 0, 1, 0, |
1bbd0b84 | 345 | (SCM user), |
b380b885 MD |
346 | "Look up an entry in the user database. @var{obj} can be an integer,\n" |
347 | "a string, or omitted, giving the behaviour of getpwuid, getpwnam\n" | |
348 | "or getpwent respectively.") | |
1bbd0b84 | 349 | #define FUNC_NAME s_scm_getpwuid |
0f2d19dd | 350 | { |
0f2d19dd | 351 | struct passwd *entry; |
0f2d19dd | 352 | |
1d1559ce | 353 | SCM result = scm_c_make_vector (7, SCM_UNSPECIFIED); |
7888309b | 354 | if (SCM_UNBNDP (user) || scm_is_false (user)) |
0f2d19dd | 355 | { |
0f2d19dd | 356 | SCM_SYSCALL (entry = getpwent ()); |
3d781d49 JB |
357 | if (! entry) |
358 | { | |
3d781d49 JB |
359 | return SCM_BOOL_F; |
360 | } | |
0f2d19dd | 361 | } |
e11e83f3 | 362 | else if (scm_is_integer (user)) |
0f2d19dd | 363 | { |
e11e83f3 | 364 | entry = getpwuid (scm_to_int (user)); |
0f2d19dd JB |
365 | } |
366 | else | |
367 | { | |
f015614a MV |
368 | WITH_STRING (user, c_user, |
369 | entry = getpwnam (c_user)); | |
0f2d19dd JB |
370 | } |
371 | if (!entry) | |
1bbd0b84 | 372 | SCM_MISC_ERROR ("entry not found", SCM_EOL); |
02b754d3 | 373 | |
4057a3e0 MV |
374 | SCM_SIMPLE_VECTOR_SET(result, 0, scm_from_locale_string (entry->pw_name)); |
375 | SCM_SIMPLE_VECTOR_SET(result, 1, scm_from_locale_string (entry->pw_passwd)); | |
376 | SCM_SIMPLE_VECTOR_SET(result, 2, scm_from_ulong (entry->pw_uid)); | |
377 | SCM_SIMPLE_VECTOR_SET(result, 3, scm_from_ulong (entry->pw_gid)); | |
378 | SCM_SIMPLE_VECTOR_SET(result, 4, scm_from_locale_string (entry->pw_gecos)); | |
0f2d19dd | 379 | if (!entry->pw_dir) |
4057a3e0 | 380 | SCM_SIMPLE_VECTOR_SET(result, 5, scm_from_locale_string ("")); |
0f2d19dd | 381 | else |
4057a3e0 | 382 | SCM_SIMPLE_VECTOR_SET(result, 5, scm_from_locale_string (entry->pw_dir)); |
0f2d19dd | 383 | if (!entry->pw_shell) |
4057a3e0 | 384 | SCM_SIMPLE_VECTOR_SET(result, 6, scm_from_locale_string ("")); |
0f2d19dd | 385 | else |
4057a3e0 | 386 | SCM_SIMPLE_VECTOR_SET(result, 6, scm_from_locale_string (entry->pw_shell)); |
1d1559ce | 387 | return result; |
0f2d19dd | 388 | } |
1bbd0b84 | 389 | #undef FUNC_NAME |
82893676 | 390 | #endif /* HAVE_GETPWENT */ |
0f2d19dd JB |
391 | |
392 | ||
0e958795 | 393 | #ifdef HAVE_SETPWENT |
a1ec6916 | 394 | SCM_DEFINE (scm_setpwent, "setpw", 0, 1, 0, |
1bbd0b84 | 395 | (SCM arg), |
b380b885 MD |
396 | "If called with a true argument, initialize or reset the password data\n" |
397 | "stream. Otherwise, close the stream. The @code{setpwent} and\n" | |
398 | "@code{endpwent} procedures are implemented on top of this.") | |
1bbd0b84 | 399 | #define FUNC_NAME s_scm_setpwent |
0f2d19dd | 400 | { |
7888309b | 401 | if (SCM_UNBNDP (arg) || scm_is_false (arg)) |
0f2d19dd JB |
402 | endpwent (); |
403 | else | |
404 | setpwent (); | |
405 | return SCM_UNSPECIFIED; | |
406 | } | |
1bbd0b84 | 407 | #undef FUNC_NAME |
0e958795 | 408 | #endif |
0f2d19dd JB |
409 | |
410 | ||
82893676 | 411 | #ifdef HAVE_GETGRENT |
0f2d19dd | 412 | /* Combines getgrgid and getgrnam. */ |
a1ec6916 | 413 | SCM_DEFINE (scm_getgrgid, "getgr", 0, 1, 0, |
1bbd0b84 | 414 | (SCM name), |
b380b885 MD |
415 | "Look up an entry in the group database. @var{obj} can be an integer,\n" |
416 | "a string, or omitted, giving the behaviour of getgrgid, getgrnam\n" | |
417 | "or getgrent respectively.") | |
1bbd0b84 | 418 | #define FUNC_NAME s_scm_getgrgid |
0f2d19dd | 419 | { |
0f2d19dd | 420 | struct group *entry; |
1d1559ce | 421 | SCM result = scm_c_make_vector (4, SCM_UNSPECIFIED); |
34d19ef6 | 422 | |
7888309b | 423 | if (SCM_UNBNDP (name) || scm_is_false (name)) |
3d781d49 JB |
424 | { |
425 | SCM_SYSCALL (entry = getgrent ()); | |
426 | if (! entry) | |
427 | { | |
3d781d49 JB |
428 | return SCM_BOOL_F; |
429 | } | |
430 | } | |
e11e83f3 MV |
431 | else if (scm_is_integer (name)) |
432 | SCM_SYSCALL (entry = getgrgid (scm_to_int (name))); | |
0f2d19dd | 433 | else |
f015614a MV |
434 | STRING_SYSCALL (name, c_name, |
435 | entry = getgrnam (c_name)); | |
0f2d19dd | 436 | if (!entry) |
1bbd0b84 | 437 | SCM_SYSERROR; |
02b754d3 | 438 | |
4057a3e0 MV |
439 | SCM_SIMPLE_VECTOR_SET(result, 0, scm_from_locale_string (entry->gr_name)); |
440 | SCM_SIMPLE_VECTOR_SET(result, 1, scm_from_locale_string (entry->gr_passwd)); | |
441 | SCM_SIMPLE_VECTOR_SET(result, 2, scm_from_ulong (entry->gr_gid)); | |
442 | SCM_SIMPLE_VECTOR_SET(result, 3, scm_makfromstrs (-1, entry->gr_mem)); | |
1d1559ce | 443 | return result; |
0f2d19dd | 444 | } |
1bbd0b84 | 445 | #undef FUNC_NAME |
0f2d19dd JB |
446 | |
447 | ||
448 | ||
a1ec6916 | 449 | SCM_DEFINE (scm_setgrent, "setgr", 0, 1, 0, |
1bbd0b84 | 450 | (SCM arg), |
b380b885 MD |
451 | "If called with a true argument, initialize or reset the group data\n" |
452 | "stream. Otherwise, close the stream. The @code{setgrent} and\n" | |
453 | "@code{endgrent} procedures are implemented on top of this.") | |
1bbd0b84 | 454 | #define FUNC_NAME s_scm_setgrent |
0f2d19dd | 455 | { |
7888309b | 456 | if (SCM_UNBNDP (arg) || scm_is_false (arg)) |
0f2d19dd JB |
457 | endgrent (); |
458 | else | |
459 | setgrent (); | |
460 | return SCM_UNSPECIFIED; | |
461 | } | |
1bbd0b84 | 462 | #undef FUNC_NAME |
82893676 | 463 | #endif /* HAVE_GETGRENT */ |
0f2d19dd JB |
464 | |
465 | ||
a1ec6916 | 466 | SCM_DEFINE (scm_kill, "kill", 2, 0, 0, |
1bbd0b84 | 467 | (SCM pid, SCM sig), |
b380b885 MD |
468 | "Sends a signal to the specified process or group of processes.\n\n" |
469 | "@var{pid} specifies the processes to which the signal is sent:\n\n" | |
470 | "@table @r\n" | |
471 | "@item @var{pid} greater than 0\n" | |
472 | "The process whose identifier is @var{pid}.\n" | |
473 | "@item @var{pid} equal to 0\n" | |
474 | "All processes in the current process group.\n" | |
475 | "@item @var{pid} less than -1\n" | |
476 | "The process group whose identifier is -@var{pid}\n" | |
477 | "@item @var{pid} equal to -1\n" | |
478 | "If the process is privileged, all processes except for some special\n" | |
479 | "system processes. Otherwise, all processes with the current effective\n" | |
480 | "user ID.\n" | |
481 | "@end table\n\n" | |
482 | "@var{sig} should be specified using a variable corresponding to\n" | |
483 | "the Unix symbolic name, e.g.,\n\n" | |
484 | "@defvar SIGHUP\n" | |
485 | "Hang-up signal.\n" | |
486 | "@end defvar\n\n" | |
487 | "@defvar SIGINT\n" | |
488 | "Interrupt signal.\n" | |
489 | "@end defvar") | |
1bbd0b84 | 490 | #define FUNC_NAME s_scm_kill |
0f2d19dd | 491 | { |
0f2d19dd | 492 | /* Signal values are interned in scm_init_posix(). */ |
82893676 | 493 | #ifdef HAVE_KILL |
a55c2b68 | 494 | if (kill (scm_to_int (pid), scm_to_int (sig)) != 0) |
23d72566 | 495 | SCM_SYSERROR; |
82893676 | 496 | #else |
23d72566 KR |
497 | /* Mingw has raise(), but not kill(). (Other raw DOS environments might |
498 | be similar.) Use raise() when the requested pid is our own process, | |
499 | otherwise bomb. */ | |
a55c2b68 | 500 | if (scm_to_int (pid) == getpid ()) |
23d72566 KR |
501 | { |
502 | if (raise (scm_to_int (sig)) != 0) | |
503 | { | |
504 | err: | |
505 | SCM_SYSERROR; | |
506 | } | |
507 | else | |
508 | { | |
509 | errno = ENOSYS; | |
510 | goto err; | |
511 | } | |
512 | } | |
82893676 | 513 | #endif |
02b754d3 | 514 | return SCM_UNSPECIFIED; |
0f2d19dd | 515 | } |
1bbd0b84 | 516 | #undef FUNC_NAME |
0f2d19dd | 517 | |
d00ae47e | 518 | #ifdef HAVE_WAITPID |
a1ec6916 | 519 | SCM_DEFINE (scm_waitpid, "waitpid", 1, 1, 0, |
1bbd0b84 | 520 | (SCM pid, SCM options), |
b380b885 MD |
521 | "This procedure collects status information from a child process which\n" |
522 | "has terminated or (optionally) stopped. Normally it will\n" | |
523 | "suspend the calling process until this can be done. If more than one\n" | |
524 | "child process is eligible then one will be chosen by the operating system.\n\n" | |
525 | "The value of @var{pid} determines the behaviour:\n\n" | |
526 | "@table @r\n" | |
527 | "@item @var{pid} greater than 0\n" | |
528 | "Request status information from the specified child process.\n" | |
529 | "@item @var{pid} equal to -1 or WAIT_ANY\n" | |
530 | "Request status information for any child process.\n" | |
531 | "@item @var{pid} equal to 0 or WAIT_MYPGRP\n" | |
532 | "Request status information for any child process in the current process\n" | |
533 | "group.\n" | |
534 | "@item @var{pid} less than -1\n" | |
535 | "Request status information for any child process whose process group ID\n" | |
536 | "is -@var{PID}.\n" | |
537 | "@end table\n\n" | |
538 | "The @var{options} argument, if supplied, should be the bitwise OR of the\n" | |
539 | "values of zero or more of the following variables:\n\n" | |
540 | "@defvar WNOHANG\n" | |
541 | "Return immediately even if there are no child processes to be collected.\n" | |
542 | "@end defvar\n\n" | |
543 | "@defvar WUNTRACED\n" | |
544 | "Report status information for stopped processes as well as terminated\n" | |
545 | "processes.\n" | |
546 | "@end defvar\n\n" | |
547 | "The return value is a pair containing:\n\n" | |
548 | "@enumerate\n" | |
549 | "@item\n" | |
550 | "The process ID of the child process, or 0 if @code{WNOHANG} was\n" | |
551 | "specified and no process was collected.\n" | |
552 | "@item\n" | |
553 | "The integer status value.\n" | |
554 | "@end enumerate") | |
1bbd0b84 | 555 | #define FUNC_NAME s_scm_waitpid |
0f2d19dd JB |
556 | { |
557 | int i; | |
558 | int status; | |
559 | int ioptions; | |
0f2d19dd JB |
560 | if (SCM_UNBNDP (options)) |
561 | ioptions = 0; | |
562 | else | |
563 | { | |
0f2d19dd | 564 | /* Flags are interned in scm_init_posix. */ |
a55c2b68 | 565 | ioptions = scm_to_int (options); |
0f2d19dd | 566 | } |
a55c2b68 | 567 | SCM_SYSCALL (i = waitpid (scm_to_int (pid), &status, ioptions)); |
02b754d3 | 568 | if (i == -1) |
1bbd0b84 | 569 | SCM_SYSERROR; |
a55c2b68 | 570 | return scm_cons (scm_from_int (i), scm_from_int (status)); |
0f2d19dd | 571 | } |
1bbd0b84 | 572 | #undef FUNC_NAME |
d00ae47e | 573 | #endif /* HAVE_WAITPID */ |
0f2d19dd | 574 | |
82893676 | 575 | #ifndef __MINGW32__ |
a1ec6916 | 576 | SCM_DEFINE (scm_status_exit_val, "status:exit-val", 1, 0, 0, |
1bbd0b84 | 577 | (SCM status), |
1e6808ea MG |
578 | "Return the exit status value, as would be set if a process\n" |
579 | "ended normally through a call to @code{exit} or @code{_exit},\n" | |
580 | "if any, otherwise @code{#f}.") | |
1bbd0b84 | 581 | #define FUNC_NAME s_scm_status_exit_val |
67ec3667 | 582 | { |
e67dc2be JB |
583 | int lstatus; |
584 | ||
e67dc2be | 585 | /* On Ultrix, the WIF... macros assume their argument is an lvalue; |
e11e83f3 | 586 | go figure. */ |
a55c2b68 | 587 | lstatus = scm_to_int (status); |
e67dc2be | 588 | if (WIFEXITED (lstatus)) |
a55c2b68 | 589 | return (scm_from_int (WEXITSTATUS (lstatus))); |
67ec3667 GH |
590 | else |
591 | return SCM_BOOL_F; | |
592 | } | |
1bbd0b84 | 593 | #undef FUNC_NAME |
e67dc2be | 594 | |
a1ec6916 | 595 | SCM_DEFINE (scm_status_term_sig, "status:term-sig", 1, 0, 0, |
1bbd0b84 | 596 | (SCM status), |
1e6808ea MG |
597 | "Return the signal number which terminated the process, if any,\n" |
598 | "otherwise @code{#f}.") | |
1bbd0b84 | 599 | #define FUNC_NAME s_scm_status_term_sig |
67ec3667 | 600 | { |
e67dc2be JB |
601 | int lstatus; |
602 | ||
a55c2b68 | 603 | lstatus = scm_to_int (status); |
e67dc2be | 604 | if (WIFSIGNALED (lstatus)) |
a55c2b68 | 605 | return scm_from_int (WTERMSIG (lstatus)); |
67ec3667 GH |
606 | else |
607 | return SCM_BOOL_F; | |
608 | } | |
1bbd0b84 | 609 | #undef FUNC_NAME |
0f2d19dd | 610 | |
a1ec6916 | 611 | SCM_DEFINE (scm_status_stop_sig, "status:stop-sig", 1, 0, 0, |
1bbd0b84 | 612 | (SCM status), |
1e6808ea MG |
613 | "Return the signal number which stopped the process, if any,\n" |
614 | "otherwise @code{#f}.") | |
1bbd0b84 | 615 | #define FUNC_NAME s_scm_status_stop_sig |
67ec3667 | 616 | { |
e67dc2be JB |
617 | int lstatus; |
618 | ||
a55c2b68 | 619 | lstatus = scm_to_int (status); |
e67dc2be | 620 | if (WIFSTOPPED (lstatus)) |
a55c2b68 | 621 | return scm_from_int (WSTOPSIG (lstatus)); |
67ec3667 GH |
622 | else |
623 | return SCM_BOOL_F; | |
624 | } | |
1bbd0b84 | 625 | #undef FUNC_NAME |
82893676 | 626 | #endif /* __MINGW32__ */ |
0f2d19dd | 627 | |
82893676 | 628 | #ifdef HAVE_GETPPID |
a1ec6916 | 629 | SCM_DEFINE (scm_getppid, "getppid", 0, 0, 0, |
1bbd0b84 | 630 | (), |
1e6808ea MG |
631 | "Return an integer representing the process ID of the parent\n" |
632 | "process.") | |
1bbd0b84 | 633 | #define FUNC_NAME s_scm_getppid |
0f2d19dd | 634 | { |
e11e83f3 | 635 | return scm_from_int (getppid ()); |
0f2d19dd | 636 | } |
1bbd0b84 | 637 | #undef FUNC_NAME |
82893676 | 638 | #endif /* HAVE_GETPPID */ |
0f2d19dd JB |
639 | |
640 | ||
82893676 | 641 | #ifndef __MINGW32__ |
a1ec6916 | 642 | SCM_DEFINE (scm_getuid, "getuid", 0, 0, 0, |
1bbd0b84 | 643 | (), |
1e6808ea | 644 | "Return an integer representing the current real user ID.") |
1bbd0b84 | 645 | #define FUNC_NAME s_scm_getuid |
0f2d19dd | 646 | { |
e11e83f3 | 647 | return scm_from_int (getuid ()); |
0f2d19dd | 648 | } |
1bbd0b84 | 649 | #undef FUNC_NAME |
0f2d19dd JB |
650 | |
651 | ||
652 | ||
a1ec6916 | 653 | SCM_DEFINE (scm_getgid, "getgid", 0, 0, 0, |
1bbd0b84 | 654 | (), |
1e6808ea | 655 | "Return an integer representing the current real group ID.") |
1bbd0b84 | 656 | #define FUNC_NAME s_scm_getgid |
0f2d19dd | 657 | { |
e11e83f3 | 658 | return scm_from_int (getgid ()); |
0f2d19dd | 659 | } |
1bbd0b84 | 660 | #undef FUNC_NAME |
0f2d19dd JB |
661 | |
662 | ||
663 | ||
a1ec6916 | 664 | SCM_DEFINE (scm_geteuid, "geteuid", 0, 0, 0, |
1bbd0b84 | 665 | (), |
1e6808ea | 666 | "Return an integer representing the current effective user ID.\n" |
b380b885 | 667 | "If the system does not support effective IDs, then the real ID\n" |
480fa28d | 668 | "is returned. @code{(provided? 'EIDs)} reports whether the\n" |
1e6808ea | 669 | "system supports effective IDs.") |
1bbd0b84 | 670 | #define FUNC_NAME s_scm_geteuid |
0f2d19dd JB |
671 | { |
672 | #ifdef HAVE_GETEUID | |
e11e83f3 | 673 | return scm_from_int (geteuid ()); |
0f2d19dd | 674 | #else |
e11e83f3 | 675 | return scm_from_int (getuid ()); |
0f2d19dd JB |
676 | #endif |
677 | } | |
1bbd0b84 | 678 | #undef FUNC_NAME |
0f2d19dd JB |
679 | |
680 | ||
a1ec6916 | 681 | SCM_DEFINE (scm_getegid, "getegid", 0, 0, 0, |
1bbd0b84 | 682 | (), |
1e6808ea | 683 | "Return an integer representing the current effective group ID.\n" |
b380b885 | 684 | "If the system does not support effective IDs, then the real ID\n" |
480fa28d | 685 | "is returned. @code{(provided? 'EIDs)} reports whether the\n" |
1e6808ea | 686 | "system supports effective IDs.") |
1bbd0b84 | 687 | #define FUNC_NAME s_scm_getegid |
0f2d19dd JB |
688 | { |
689 | #ifdef HAVE_GETEUID | |
e11e83f3 | 690 | return scm_from_int (getegid ()); |
0f2d19dd | 691 | #else |
e11e83f3 | 692 | return scm_from_int (getgid ()); |
0f2d19dd JB |
693 | #endif |
694 | } | |
1bbd0b84 | 695 | #undef FUNC_NAME |
0f2d19dd JB |
696 | |
697 | ||
a1ec6916 | 698 | SCM_DEFINE (scm_setuid, "setuid", 1, 0, 0, |
1bbd0b84 | 699 | (SCM id), |
b380b885 MD |
700 | "Sets both the real and effective user IDs to the integer @var{id}, provided\n" |
701 | "the process has appropriate privileges.\n" | |
702 | "The return value is unspecified.") | |
1bbd0b84 | 703 | #define FUNC_NAME s_scm_setuid |
0f2d19dd | 704 | { |
a55c2b68 | 705 | if (setuid (scm_to_int (id)) != 0) |
1bbd0b84 | 706 | SCM_SYSERROR; |
02b754d3 | 707 | return SCM_UNSPECIFIED; |
0f2d19dd | 708 | } |
1bbd0b84 | 709 | #undef FUNC_NAME |
0f2d19dd | 710 | |
a1ec6916 | 711 | SCM_DEFINE (scm_setgid, "setgid", 1, 0, 0, |
1bbd0b84 | 712 | (SCM id), |
b380b885 MD |
713 | "Sets both the real and effective group IDs to the integer @var{id}, provided\n" |
714 | "the process has appropriate privileges.\n" | |
715 | "The return value is unspecified.") | |
1bbd0b84 | 716 | #define FUNC_NAME s_scm_setgid |
0f2d19dd | 717 | { |
a55c2b68 | 718 | if (setgid (scm_to_int (id)) != 0) |
1bbd0b84 | 719 | SCM_SYSERROR; |
02b754d3 | 720 | return SCM_UNSPECIFIED; |
0f2d19dd | 721 | } |
1bbd0b84 | 722 | #undef FUNC_NAME |
0f2d19dd | 723 | |
a1ec6916 | 724 | SCM_DEFINE (scm_seteuid, "seteuid", 1, 0, 0, |
1bbd0b84 | 725 | (SCM id), |
b380b885 MD |
726 | "Sets the effective user ID to the integer @var{id}, provided the process\n" |
727 | "has appropriate privileges. If effective IDs are not supported, the\n" | |
480fa28d | 728 | "real ID is set instead -- @code{(provided? 'EIDs)} reports whether the\n" |
b380b885 MD |
729 | "system supports effective IDs.\n" |
730 | "The return value is unspecified.") | |
1bbd0b84 | 731 | #define FUNC_NAME s_scm_seteuid |
0f2d19dd | 732 | { |
02b754d3 GH |
733 | int rv; |
734 | ||
0f2d19dd | 735 | #ifdef HAVE_SETEUID |
a55c2b68 | 736 | rv = seteuid (scm_to_int (id)); |
0f2d19dd | 737 | #else |
a55c2b68 | 738 | rv = setuid (scm_to_int (id)); |
0f2d19dd | 739 | #endif |
02b754d3 | 740 | if (rv != 0) |
1bbd0b84 | 741 | SCM_SYSERROR; |
02b754d3 | 742 | return SCM_UNSPECIFIED; |
0f2d19dd | 743 | } |
1bbd0b84 | 744 | #undef FUNC_NAME |
7beabedb MG |
745 | #endif /* __MINGW32__ */ |
746 | ||
0f2d19dd | 747 | |
0e958795 | 748 | #ifdef HAVE_SETEGID |
a1ec6916 | 749 | SCM_DEFINE (scm_setegid, "setegid", 1, 0, 0, |
1bbd0b84 | 750 | (SCM id), |
b380b885 MD |
751 | "Sets the effective group ID to the integer @var{id}, provided the process\n" |
752 | "has appropriate privileges. If effective IDs are not supported, the\n" | |
480fa28d | 753 | "real ID is set instead -- @code{(provided? 'EIDs)} reports whether the\n" |
b380b885 MD |
754 | "system supports effective IDs.\n" |
755 | "The return value is unspecified.") | |
1bbd0b84 | 756 | #define FUNC_NAME s_scm_setegid |
0f2d19dd | 757 | { |
02b754d3 GH |
758 | int rv; |
759 | ||
0f2d19dd | 760 | #ifdef HAVE_SETEUID |
a55c2b68 | 761 | rv = setegid (scm_to_int (id)); |
0f2d19dd | 762 | #else |
a55c2b68 | 763 | rv = setgid (scm_to_int (id)); |
0f2d19dd | 764 | #endif |
02b754d3 | 765 | if (rv != 0) |
1bbd0b84 | 766 | SCM_SYSERROR; |
02b754d3 GH |
767 | return SCM_UNSPECIFIED; |
768 | ||
0f2d19dd | 769 | } |
1bbd0b84 | 770 | #undef FUNC_NAME |
0e958795 | 771 | #endif |
0f2d19dd | 772 | |
82893676 MG |
773 | |
774 | #ifdef HAVE_GETPGRP | |
a1ec6916 | 775 | SCM_DEFINE (scm_getpgrp, "getpgrp", 0, 0, 0, |
1bbd0b84 | 776 | (), |
1e6808ea | 777 | "Return an integer representing the current process group ID.\n" |
b380b885 | 778 | "This is the POSIX definition, not BSD.") |
1bbd0b84 | 779 | #define FUNC_NAME s_scm_getpgrp |
0f2d19dd JB |
780 | { |
781 | int (*fn)(); | |
4625e44f | 782 | fn = (int (*) ()) getpgrp; |
e11e83f3 | 783 | return scm_from_int (fn (0)); |
0f2d19dd | 784 | } |
1bbd0b84 | 785 | #undef FUNC_NAME |
82893676 MG |
786 | #endif /* HAVE_GETPGRP */ |
787 | ||
0f2d19dd | 788 | |
f25f761d | 789 | #ifdef HAVE_SETPGID |
a1ec6916 | 790 | SCM_DEFINE (scm_setpgid, "setpgid", 2, 0, 0, |
1bbd0b84 | 791 | (SCM pid, SCM pgid), |
b380b885 MD |
792 | "Move the process @var{pid} into the process group @var{pgid}. @var{pid} or\n" |
793 | "@var{pgid} must be integers: they can be zero to indicate the ID of the\n" | |
794 | "current process.\n" | |
795 | "Fails on systems that do not support job control.\n" | |
796 | "The return value is unspecified.") | |
1bbd0b84 | 797 | #define FUNC_NAME s_scm_setpgid |
0f2d19dd | 798 | { |
02b754d3 | 799 | /* FIXME(?): may be known as setpgrp. */ |
a55c2b68 | 800 | if (setpgid (scm_to_int (pid), scm_to_int (pgid)) != 0) |
1bbd0b84 | 801 | SCM_SYSERROR; |
02b754d3 | 802 | return SCM_UNSPECIFIED; |
0f2d19dd | 803 | } |
1bbd0b84 | 804 | #undef FUNC_NAME |
f25f761d | 805 | #endif /* HAVE_SETPGID */ |
0f2d19dd | 806 | |
f25f761d | 807 | #ifdef HAVE_SETSID |
a1ec6916 | 808 | SCM_DEFINE (scm_setsid, "setsid", 0, 0, 0, |
1bbd0b84 | 809 | (), |
b380b885 MD |
810 | "Creates a new session. The current process becomes the session leader\n" |
811 | "and is put in a new process group. The process will be detached\n" | |
812 | "from its controlling terminal if it has one.\n" | |
813 | "The return value is an integer representing the new process group ID.") | |
1bbd0b84 | 814 | #define FUNC_NAME s_scm_setsid |
0f2d19dd JB |
815 | { |
816 | pid_t sid = setsid (); | |
02b754d3 | 817 | if (sid == -1) |
1bbd0b84 | 818 | SCM_SYSERROR; |
02b754d3 | 819 | return SCM_UNSPECIFIED; |
0f2d19dd | 820 | } |
1bbd0b84 | 821 | #undef FUNC_NAME |
f25f761d | 822 | #endif /* HAVE_SETSID */ |
0f2d19dd | 823 | |
e8a59063 KR |
824 | |
825 | /* ttyname returns its result in a single static buffer, hence | |
826 | scm_i_misc_mutex for thread safety. In glibc 2.3.2 two threads | |
827 | continuously calling ttyname will otherwise get an overwrite quite | |
828 | easily. | |
829 | ||
830 | ttyname_r (when available) could be used instead of scm_i_misc_mutex, but | |
831 | there's probably little to be gained in either speed or parallelism. */ | |
832 | ||
82893676 | 833 | #ifdef HAVE_TTYNAME |
a1ec6916 | 834 | SCM_DEFINE (scm_ttyname, "ttyname", 1, 0, 0, |
1bbd0b84 | 835 | (SCM port), |
1e6808ea MG |
836 | "Return a string with the name of the serial terminal device\n" |
837 | "underlying @var{port}.") | |
1bbd0b84 | 838 | #define FUNC_NAME s_scm_ttyname |
0f2d19dd | 839 | { |
1d1559ce | 840 | char *result; |
e8a59063 | 841 | int fd, err; |
a1ef7406 | 842 | SCM ret = SCM_BOOL_F; |
78446828 MV |
843 | |
844 | port = SCM_COERCE_OUTPORT (port); | |
34d19ef6 | 845 | SCM_VALIDATE_OPPORT (1, port); |
a98bddfd | 846 | if (!SCM_FPORTP (port)) |
0f2d19dd | 847 | return SCM_BOOL_F; |
ee149d03 | 848 | fd = SCM_FPORT_FDES (port); |
e8a59063 | 849 | |
9de87eea | 850 | scm_i_scm_pthread_mutex_lock (&scm_i_misc_mutex); |
a1ef7406 | 851 | |
1d1559ce | 852 | SCM_SYSCALL (result = ttyname (fd)); |
e8a59063 | 853 | err = errno; |
a1ef7406 LC |
854 | if (result != NULL) |
855 | result = strdup (result); | |
856 | ||
9de87eea | 857 | scm_i_pthread_mutex_unlock (&scm_i_misc_mutex); |
e8a59063 | 858 | |
1d1559ce | 859 | if (!result) |
e8a59063 KR |
860 | { |
861 | errno = err; | |
862 | SCM_SYSERROR; | |
863 | } | |
a1ef7406 LC |
864 | else |
865 | ret = scm_take_locale_string (result); | |
866 | ||
e8a59063 | 867 | return ret; |
0f2d19dd | 868 | } |
1bbd0b84 | 869 | #undef FUNC_NAME |
82893676 | 870 | #endif /* HAVE_TTYNAME */ |
0f2d19dd | 871 | |
e8a59063 | 872 | |
0a9d83b0 KR |
873 | /* For thread safety "buf" is used instead of NULL for the ctermid static |
874 | buffer. Actually it's unlikely the controlling terminal will change | |
875 | during program execution, and indeed on glibc (2.3.2) it's always just | |
876 | "/dev/tty", but L_ctermid on the stack is easy and fast and guarantees | |
877 | safety everywhere. */ | |
f25f761d | 878 | #ifdef HAVE_CTERMID |
a1ec6916 | 879 | SCM_DEFINE (scm_ctermid, "ctermid", 0, 0, 0, |
1bbd0b84 | 880 | (), |
1e6808ea MG |
881 | "Return a string containing the file name of the controlling\n" |
882 | "terminal for the current process.") | |
1bbd0b84 | 883 | #define FUNC_NAME s_scm_ctermid |
0f2d19dd | 884 | { |
0a9d83b0 KR |
885 | char buf[L_ctermid]; |
886 | char *result = ctermid (buf); | |
02b754d3 | 887 | if (*result == '\0') |
1bbd0b84 | 888 | SCM_SYSERROR; |
cc95e00a | 889 | return scm_from_locale_string (result); |
0f2d19dd | 890 | } |
1bbd0b84 | 891 | #undef FUNC_NAME |
f25f761d | 892 | #endif /* HAVE_CTERMID */ |
0f2d19dd | 893 | |
f25f761d | 894 | #ifdef HAVE_TCGETPGRP |
a1ec6916 | 895 | SCM_DEFINE (scm_tcgetpgrp, "tcgetpgrp", 1, 0, 0, |
1bbd0b84 | 896 | (SCM port), |
1e6808ea MG |
897 | "Return the process group ID of the foreground process group\n" |
898 | "associated with the terminal open on the file descriptor\n" | |
899 | "underlying @var{port}.\n" | |
900 | "\n" | |
b380b885 MD |
901 | "If there is no foreground process group, the return value is a\n" |
902 | "number greater than 1 that does not match the process group ID\n" | |
903 | "of any existing process group. This can happen if all of the\n" | |
904 | "processes in the job that was formerly the foreground job have\n" | |
905 | "terminated, and no other job has yet been moved into the\n" | |
906 | "foreground.") | |
1bbd0b84 | 907 | #define FUNC_NAME s_scm_tcgetpgrp |
0f2d19dd JB |
908 | { |
909 | int fd; | |
910 | pid_t pgid; | |
78446828 MV |
911 | |
912 | port = SCM_COERCE_OUTPORT (port); | |
913 | ||
34d19ef6 | 914 | SCM_VALIDATE_OPFPORT (1, port); |
ee149d03 JB |
915 | fd = SCM_FPORT_FDES (port); |
916 | if ((pgid = tcgetpgrp (fd)) == -1) | |
1bbd0b84 | 917 | SCM_SYSERROR; |
e11e83f3 | 918 | return scm_from_int (pgid); |
1bbd0b84 GB |
919 | } |
920 | #undef FUNC_NAME | |
f25f761d | 921 | #endif /* HAVE_TCGETPGRP */ |
0f2d19dd | 922 | |
f25f761d | 923 | #ifdef HAVE_TCSETPGRP |
a1ec6916 | 924 | SCM_DEFINE (scm_tcsetpgrp, "tcsetpgrp", 2, 0, 0, |
1bbd0b84 | 925 | (SCM port, SCM pgid), |
b380b885 MD |
926 | "Set the foreground process group ID for the terminal used by the file\n" |
927 | "descriptor underlying @var{port} to the integer @var{pgid}.\n" | |
928 | "The calling process\n" | |
929 | "must be a member of the same session as @var{pgid} and must have the same\n" | |
930 | "controlling terminal. The return value is unspecified.") | |
1bbd0b84 | 931 | #define FUNC_NAME s_scm_tcsetpgrp |
0f2d19dd JB |
932 | { |
933 | int fd; | |
78446828 MV |
934 | |
935 | port = SCM_COERCE_OUTPORT (port); | |
936 | ||
34d19ef6 | 937 | SCM_VALIDATE_OPFPORT (1, port); |
ee149d03 | 938 | fd = SCM_FPORT_FDES (port); |
a55c2b68 | 939 | if (tcsetpgrp (fd, scm_to_int (pgid)) == -1) |
1bbd0b84 | 940 | SCM_SYSERROR; |
02b754d3 | 941 | return SCM_UNSPECIFIED; |
1bbd0b84 GB |
942 | } |
943 | #undef FUNC_NAME | |
f25f761d | 944 | #endif /* HAVE_TCSETPGRP */ |
0f2d19dd | 945 | |
7f03f970 MV |
946 | static void |
947 | free_string_pointers (void *data) | |
0f2d19dd | 948 | { |
7f03f970 | 949 | scm_i_free_string_pointers ((char **)data); |
0f2d19dd JB |
950 | } |
951 | ||
a1ec6916 | 952 | SCM_DEFINE (scm_execl, "execl", 1, 0, 1, |
1bbd0b84 | 953 | (SCM filename, SCM args), |
b380b885 MD |
954 | "Executes the file named by @var{path} as a new process image.\n" |
955 | "The remaining arguments are supplied to the process; from a C program\n" | |
bb2c02f2 | 956 | "they are accessible as the @code{argv} argument to @code{main}.\n" |
b380b885 | 957 | "Conventionally the first @var{arg} is the same as @var{path}.\n" |
8f85c0c6 | 958 | "All arguments must be strings.\n\n" |
b380b885 MD |
959 | "If @var{arg} is missing, @var{path} is executed with a null\n" |
960 | "argument list, which may have system-dependent side-effects.\n\n" | |
961 | "This procedure is currently implemented using the @code{execv} system\n" | |
962 | "call, but we call it @code{execl} because of its Scheme calling interface.") | |
1bbd0b84 | 963 | #define FUNC_NAME s_scm_execl |
0f2d19dd | 964 | { |
7f03f970 MV |
965 | char *exec_file; |
966 | char **exec_argv; | |
967 | ||
661ae7ab | 968 | scm_dynwind_begin (0); |
7f03f970 MV |
969 | |
970 | exec_file = scm_to_locale_string (filename); | |
661ae7ab | 971 | scm_dynwind_free (exec_file); |
7f03f970 MV |
972 | |
973 | exec_argv = scm_i_allocate_string_pointers (args); | |
661ae7ab | 974 | scm_dynwind_unwind_handler (free_string_pointers, exec_argv, |
7f03f970 MV |
975 | SCM_F_WIND_EXPLICITLY); |
976 | ||
8ab3d8a0 KR |
977 | execv (exec_file, |
978 | #ifdef __MINGW32__ | |
979 | /* extra "const" in mingw formals, provokes warning from gcc */ | |
980 | (const char * const *) | |
981 | #endif | |
982 | exec_argv); | |
1bbd0b84 | 983 | SCM_SYSERROR; |
7f03f970 | 984 | |
02b754d3 | 985 | /* not reached. */ |
661ae7ab | 986 | scm_dynwind_end (); |
02b754d3 | 987 | return SCM_BOOL_F; |
0f2d19dd | 988 | } |
1bbd0b84 | 989 | #undef FUNC_NAME |
0f2d19dd | 990 | |
a1ec6916 | 991 | SCM_DEFINE (scm_execlp, "execlp", 1, 0, 1, |
1bbd0b84 | 992 | (SCM filename, SCM args), |
b380b885 MD |
993 | "Similar to @code{execl}, however if\n" |
994 | "@var{filename} does not contain a slash\n" | |
995 | "then the file to execute will be located by searching the\n" | |
996 | "directories listed in the @code{PATH} environment variable.\n\n" | |
6bcd01fc | 997 | "This procedure is currently implemented using the @code{execvp} system\n" |
b380b885 | 998 | "call, but we call it @code{execlp} because of its Scheme calling interface.") |
1bbd0b84 | 999 | #define FUNC_NAME s_scm_execlp |
0f2d19dd | 1000 | { |
7f03f970 MV |
1001 | char *exec_file; |
1002 | char **exec_argv; | |
1003 | ||
661ae7ab | 1004 | scm_dynwind_begin (0); |
7f03f970 MV |
1005 | |
1006 | exec_file = scm_to_locale_string (filename); | |
661ae7ab | 1007 | scm_dynwind_free (exec_file); |
7f03f970 MV |
1008 | |
1009 | exec_argv = scm_i_allocate_string_pointers (args); | |
661ae7ab | 1010 | scm_dynwind_unwind_handler (free_string_pointers, exec_argv, |
7f03f970 MV |
1011 | SCM_F_WIND_EXPLICITLY); |
1012 | ||
8ab3d8a0 KR |
1013 | execvp (exec_file, |
1014 | #ifdef __MINGW32__ | |
1015 | /* extra "const" in mingw formals, provokes warning from gcc */ | |
1016 | (const char * const *) | |
1017 | #endif | |
1018 | exec_argv); | |
1bbd0b84 | 1019 | SCM_SYSERROR; |
7f03f970 | 1020 | |
02b754d3 | 1021 | /* not reached. */ |
661ae7ab | 1022 | scm_dynwind_end (); |
02b754d3 | 1023 | return SCM_BOOL_F; |
0f2d19dd | 1024 | } |
1bbd0b84 | 1025 | #undef FUNC_NAME |
0f2d19dd | 1026 | |
6afcd3b2 | 1027 | |
807f353f KR |
1028 | /* OPTIMIZE-ME: scm_execle doesn't need malloced copies of the environment |
1029 | list strings the way environ_list_to_c gives. */ | |
1030 | ||
a1ec6916 | 1031 | SCM_DEFINE (scm_execle, "execle", 2, 0, 1, |
1bbd0b84 | 1032 | (SCM filename, SCM env, SCM args), |
b380b885 MD |
1033 | "Similar to @code{execl}, but the environment of the new process is\n" |
1034 | "specified by @var{env}, which must be a list of strings as returned by the\n" | |
1035 | "@code{environ} procedure.\n\n" | |
1036 | "This procedure is currently implemented using the @code{execve} system\n" | |
1037 | "call, but we call it @code{execle} because of its Scheme calling interface.") | |
1bbd0b84 | 1038 | #define FUNC_NAME s_scm_execle |
6afcd3b2 | 1039 | { |
7f03f970 | 1040 | char **exec_argv; |
6afcd3b2 | 1041 | char **exec_env; |
7f03f970 | 1042 | char *exec_file; |
6afcd3b2 | 1043 | |
661ae7ab | 1044 | scm_dynwind_begin (0); |
7f03f970 MV |
1045 | |
1046 | exec_file = scm_to_locale_string (filename); | |
661ae7ab | 1047 | scm_dynwind_free (exec_file); |
7f03f970 MV |
1048 | |
1049 | exec_argv = scm_i_allocate_string_pointers (args); | |
661ae7ab | 1050 | scm_dynwind_unwind_handler (free_string_pointers, exec_argv, |
7f03f970 MV |
1051 | SCM_F_WIND_EXPLICITLY); |
1052 | ||
1053 | exec_env = scm_i_allocate_string_pointers (env); | |
661ae7ab | 1054 | scm_dynwind_unwind_handler (free_string_pointers, exec_env, |
7f03f970 MV |
1055 | SCM_F_WIND_EXPLICITLY); |
1056 | ||
8ab3d8a0 KR |
1057 | execve (exec_file, |
1058 | #ifdef __MINGW32__ | |
1059 | /* extra "const" in mingw formals, provokes warning from gcc */ | |
1060 | (const char * const *) | |
1061 | #endif | |
1062 | exec_argv, | |
1063 | #ifdef __MINGW32__ | |
1064 | /* extra "const" in mingw formals, provokes warning from gcc */ | |
1065 | (const char * const *) | |
1066 | #endif | |
1067 | exec_env); | |
1bbd0b84 | 1068 | SCM_SYSERROR; |
7f03f970 | 1069 | |
6afcd3b2 | 1070 | /* not reached. */ |
661ae7ab | 1071 | scm_dynwind_end (); |
6afcd3b2 GH |
1072 | return SCM_BOOL_F; |
1073 | } | |
1bbd0b84 | 1074 | #undef FUNC_NAME |
6afcd3b2 | 1075 | |
82893676 | 1076 | #ifdef HAVE_FORK |
a1ec6916 | 1077 | SCM_DEFINE (scm_fork, "primitive-fork", 0, 0, 0, |
1bbd0b84 | 1078 | (), |
b380b885 MD |
1079 | "Creates a new \"child\" process by duplicating the current \"parent\" process.\n" |
1080 | "In the child the return value is 0. In the parent the return value is\n" | |
1081 | "the integer process ID of the child.\n\n" | |
1082 | "This procedure has been renamed from @code{fork} to avoid a naming conflict\n" | |
1083 | "with the scsh fork.") | |
1bbd0b84 | 1084 | #define FUNC_NAME s_scm_fork |
0f2d19dd | 1085 | { |
bab0f4e5 | 1086 | int pid; |
0f2d19dd JB |
1087 | pid = fork (); |
1088 | if (pid == -1) | |
1bbd0b84 | 1089 | SCM_SYSERROR; |
e11e83f3 | 1090 | return scm_from_int (pid); |
0f2d19dd | 1091 | } |
1bbd0b84 | 1092 | #undef FUNC_NAME |
82893676 | 1093 | #endif /* HAVE_FORK */ |
0f2d19dd | 1094 | |
4f68365d MV |
1095 | #ifdef __MINGW32__ |
1096 | # include "win32-uname.h" | |
1097 | #endif | |
1098 | ||
1099 | #if defined (HAVE_UNAME) || defined (__MINGW32__) | |
a1ec6916 | 1100 | SCM_DEFINE (scm_uname, "uname", 0, 0, 0, |
1bbd0b84 | 1101 | (), |
1e6808ea MG |
1102 | "Return an object with some information about the computer\n" |
1103 | "system the program is running on.") | |
1bbd0b84 | 1104 | #define FUNC_NAME s_scm_uname |
0f2d19dd | 1105 | { |
0f2d19dd | 1106 | struct utsname buf; |
1d1559ce | 1107 | SCM result = scm_c_make_vector (5, SCM_UNSPECIFIED); |
e1a191a8 | 1108 | if (uname (&buf) < 0) |
1bbd0b84 | 1109 | SCM_SYSERROR; |
4057a3e0 MV |
1110 | SCM_SIMPLE_VECTOR_SET(result, 0, scm_from_locale_string (buf.sysname)); |
1111 | SCM_SIMPLE_VECTOR_SET(result, 1, scm_from_locale_string (buf.nodename)); | |
1112 | SCM_SIMPLE_VECTOR_SET(result, 2, scm_from_locale_string (buf.release)); | |
1113 | SCM_SIMPLE_VECTOR_SET(result, 3, scm_from_locale_string (buf.version)); | |
1114 | SCM_SIMPLE_VECTOR_SET(result, 4, scm_from_locale_string (buf.machine)); | |
0f2d19dd | 1115 | /* |
02b754d3 | 1116 | a linux special? |
4057a3e0 | 1117 | SCM_SIMPLE_VECTOR_SET(result, 5, scm_from_locale_string (buf.domainname)); |
0f2d19dd | 1118 | */ |
1d1559ce | 1119 | return result; |
0f2d19dd | 1120 | } |
1bbd0b84 | 1121 | #undef FUNC_NAME |
f25f761d | 1122 | #endif /* HAVE_UNAME */ |
0f2d19dd | 1123 | |
a1ec6916 | 1124 | SCM_DEFINE (scm_environ, "environ", 0, 1, 0, |
1bbd0b84 | 1125 | (SCM env), |
1e6808ea MG |
1126 | "If @var{env} is omitted, return the current environment (in the\n" |
1127 | "Unix sense) as a list of strings. Otherwise set the current\n" | |
1128 | "environment, which is also the default environment for child\n" | |
1129 | "processes, to the supplied list of strings. Each member of\n" | |
1130 | "@var{env} should be of the form @code{NAME=VALUE} and values of\n" | |
1131 | "@code{NAME} should not be duplicated. If @var{env} is supplied\n" | |
1132 | "then the return value is unspecified.") | |
1bbd0b84 | 1133 | #define FUNC_NAME s_scm_environ |
0f2d19dd JB |
1134 | { |
1135 | if (SCM_UNBNDP (env)) | |
1136 | return scm_makfromstrs (-1, environ); | |
1137 | else | |
1138 | { | |
0f2d19dd | 1139 | char **new_environ; |
6afcd3b2 | 1140 | |
7f03f970 | 1141 | new_environ = scm_i_allocate_string_pointers (env); |
0f2d19dd JB |
1142 | /* Free the old environment, except when called for the first |
1143 | * time. | |
1144 | */ | |
1145 | { | |
0f2d19dd JB |
1146 | static int first = 1; |
1147 | if (!first) | |
7f03f970 | 1148 | scm_i_free_string_pointers (environ); |
0f2d19dd JB |
1149 | first = 0; |
1150 | } | |
1151 | environ = new_environ; | |
1152 | return SCM_UNSPECIFIED; | |
1153 | } | |
1154 | } | |
1bbd0b84 | 1155 | #undef FUNC_NAME |
0f2d19dd | 1156 | |
9ee5fce4 MD |
1157 | #ifdef L_tmpnam |
1158 | ||
a1ec6916 | 1159 | SCM_DEFINE (scm_tmpnam, "tmpnam", 0, 0, 0, |
1bbd0b84 | 1160 | (), |
1e6808ea MG |
1161 | "Return a name in the file system that does not match any\n" |
1162 | "existing file. However there is no guarantee that another\n" | |
1163 | "process will not create the file after @code{tmpnam} is called.\n" | |
1164 | "Care should be taken if opening the file, e.g., use the\n" | |
1165 | "@code{O_EXCL} open flag or use @code{mkstemp!} instead.") | |
1bbd0b84 | 1166 | #define FUNC_NAME s_scm_tmpnam |
9ee5fce4 MD |
1167 | { |
1168 | char name[L_tmpnam]; | |
6d163216 GH |
1169 | char *rv; |
1170 | ||
1171 | SCM_SYSCALL (rv = tmpnam (name)); | |
1172 | if (rv == NULL) | |
1173 | /* not SCM_SYSERROR since errno probably not set. */ | |
1174 | SCM_MISC_ERROR ("tmpnam failed", SCM_EOL); | |
cc95e00a | 1175 | return scm_from_locale_string (name); |
9ee5fce4 | 1176 | } |
0f981281 | 1177 | #undef FUNC_NAME |
0f2d19dd | 1178 | |
1bbd0b84 | 1179 | #endif |
1cc91f1b | 1180 | |
4f68365d MV |
1181 | #ifndef HAVE_MKSTEMP |
1182 | extern int mkstemp (char *); | |
1183 | #endif | |
1184 | ||
6d163216 GH |
1185 | SCM_DEFINE (scm_mkstemp, "mkstemp!", 1, 0, 0, |
1186 | (SCM tmpl), | |
23f2b9a3 | 1187 | "Create a new unique file in the file system and return a new\n" |
1e6808ea | 1188 | "buffered port open for reading and writing to the file.\n" |
2c4cdcb0 | 1189 | "\n" |
1e6808ea | 1190 | "@var{tmpl} is a string specifying where the file should be\n" |
23f2b9a3 KR |
1191 | "created: it must end with @samp{XXXXXX} and those @samp{X}s\n" |
1192 | "will be changed in the string to return the name of the file.\n" | |
1193 | "(@code{port-filename} on the port also gives the name.)\n" | |
2c4cdcb0 | 1194 | "\n" |
23f2b9a3 KR |
1195 | "POSIX doesn't specify the permissions mode of the file, on GNU\n" |
1196 | "and most systems it's @code{#o600}. An application can use\n" | |
1197 | "@code{chmod} to relax that if desired. For example\n" | |
1198 | "@code{#o666} less @code{umask}, which is usual for ordinary\n" | |
1199 | "file creation,\n" | |
1200 | "\n" | |
1201 | "@example\n" | |
1202 | "(let ((port (mkstemp! (string-copy \"/tmp/myfile-XXXXXX\"))))\n" | |
1203 | " (chmod port (logand #o666 (lognot (umask))))\n" | |
1204 | " ...)\n" | |
1205 | "@end example") | |
6d163216 GH |
1206 | #define FUNC_NAME s_scm_mkstemp |
1207 | { | |
1208 | char *c_tmpl; | |
71978ac9 | 1209 | int rv; |
6d163216 | 1210 | |
661ae7ab | 1211 | scm_dynwind_begin (0); |
892065da MV |
1212 | |
1213 | c_tmpl = scm_to_locale_string (tmpl); | |
661ae7ab | 1214 | scm_dynwind_free (c_tmpl); |
892065da | 1215 | |
6d163216 GH |
1216 | SCM_SYSCALL (rv = mkstemp (c_tmpl)); |
1217 | if (rv == -1) | |
1218 | SCM_SYSERROR; | |
892065da MV |
1219 | |
1220 | scm_substring_move_x (scm_from_locale_string (c_tmpl), | |
1221 | SCM_INUM0, scm_string_length (tmpl), | |
1222 | tmpl, SCM_INUM0); | |
1223 | ||
661ae7ab | 1224 | scm_dynwind_end (); |
6d163216 GH |
1225 | return scm_fdes_to_port (rv, "w+", tmpl); |
1226 | } | |
1227 | #undef FUNC_NAME | |
1228 | ||
a1ec6916 | 1229 | SCM_DEFINE (scm_utime, "utime", 1, 2, 0, |
1bbd0b84 | 1230 | (SCM pathname, SCM actime, SCM modtime), |
1e6808ea MG |
1231 | "@code{utime} sets the access and modification times for the\n" |
1232 | "file named by @var{path}. If @var{actime} or @var{modtime} is\n" | |
1233 | "not supplied, then the current time is used. @var{actime} and\n" | |
1234 | "@var{modtime} must be integer time values as returned by the\n" | |
1235 | "@code{current-time} procedure.\n" | |
1236 | "@lisp\n" | |
b380b885 | 1237 | "(utime \"foo\" (- (current-time) 3600))\n" |
1e6808ea MG |
1238 | "@end lisp\n" |
1239 | "will set the access time to one hour in the past and the\n" | |
1240 | "modification time to the current time.") | |
1bbd0b84 | 1241 | #define FUNC_NAME s_scm_utime |
0f2d19dd JB |
1242 | { |
1243 | int rv; | |
1244 | struct utimbuf utm_tmp; | |
1245 | ||
0f2d19dd JB |
1246 | if (SCM_UNBNDP (actime)) |
1247 | SCM_SYSCALL (time (&utm_tmp.actime)); | |
1248 | else | |
e4b265d8 | 1249 | utm_tmp.actime = SCM_NUM2ULONG (2, actime); |
0f2d19dd JB |
1250 | |
1251 | if (SCM_UNBNDP (modtime)) | |
1252 | SCM_SYSCALL (time (&utm_tmp.modtime)); | |
1253 | else | |
e4b265d8 | 1254 | utm_tmp.modtime = SCM_NUM2ULONG (3, modtime); |
0f2d19dd | 1255 | |
f015614a MV |
1256 | STRING_SYSCALL (pathname, c_pathname, |
1257 | rv = utime (c_pathname, &utm_tmp)); | |
02b754d3 | 1258 | if (rv != 0) |
1bbd0b84 | 1259 | SCM_SYSERROR; |
02b754d3 | 1260 | return SCM_UNSPECIFIED; |
0f2d19dd | 1261 | } |
1bbd0b84 | 1262 | #undef FUNC_NAME |
0f2d19dd | 1263 | |
a1ec6916 | 1264 | SCM_DEFINE (scm_access, "access?", 2, 0, 0, |
1bbd0b84 | 1265 | (SCM path, SCM how), |
20e0b166 KR |
1266 | "Test accessibility of a file under the real UID and GID of the\n" |
1267 | "calling process. The return is @code{#t} if @var{path} exists\n" | |
1268 | "and the permissions requested by @var{how} are all allowed, or\n" | |
1269 | "@code{#f} if not.\n" | |
1e6808ea | 1270 | "\n" |
20e0b166 KR |
1271 | "@var{how} is an integer which is one of the following values,\n" |
1272 | "or a bitwise-OR (@code{logior}) of multiple values.\n" | |
1e6808ea | 1273 | "\n" |
b380b885 | 1274 | "@defvar R_OK\n" |
20e0b166 | 1275 | "Test for read permission.\n" |
b380b885 MD |
1276 | "@end defvar\n" |
1277 | "@defvar W_OK\n" | |
20e0b166 | 1278 | "Test for write permission.\n" |
b380b885 MD |
1279 | "@end defvar\n" |
1280 | "@defvar X_OK\n" | |
20e0b166 | 1281 | "Test for execute permission.\n" |
b380b885 MD |
1282 | "@end defvar\n" |
1283 | "@defvar F_OK\n" | |
20e0b166 KR |
1284 | "Test for existence of the file. This is implied by each of the\n" |
1285 | "other tests, so there's no need to combine it with them.\n" | |
1286 | "@end defvar\n" | |
1287 | "\n" | |
1288 | "It's important to note that @code{access?} does not simply\n" | |
1289 | "indicate what will happen on attempting to read or write a\n" | |
1290 | "file. In normal circumstances it does, but in a set-UID or\n" | |
1291 | "set-GID program it doesn't because @code{access?} tests the\n" | |
1292 | "real ID, whereas an open or execute attempt uses the effective\n" | |
1293 | "ID.\n" | |
1294 | "\n" | |
1295 | "A program which will never run set-UID/GID can ignore the\n" | |
1296 | "difference between real and effective IDs, but for maximum\n" | |
1297 | "generality, especially in library functions, it's best not to\n" | |
1298 | "use @code{access?} to predict the result of an open or execute,\n" | |
1299 | "instead simply attempt that and catch any exception.\n" | |
1300 | "\n" | |
1301 | "The main use for @code{access?} is to let a set-UID/GID program\n" | |
1302 | "determine what the invoking user would have been allowed to do,\n" | |
1303 | "without the greater (or perhaps lesser) privileges afforded by\n" | |
1304 | "the effective ID. For more on this, see ``Testing File\n" | |
1305 | "Access'' in The GNU C Library Reference Manual.") | |
1bbd0b84 | 1306 | #define FUNC_NAME s_scm_access |
0f2d19dd JB |
1307 | { |
1308 | int rv; | |
1309 | ||
f015614a MV |
1310 | WITH_STRING (path, c_path, |
1311 | rv = access (c_path, scm_to_int (how))); | |
7888309b | 1312 | return scm_from_bool (!rv); |
0f2d19dd | 1313 | } |
1bbd0b84 | 1314 | #undef FUNC_NAME |
0f2d19dd | 1315 | |
a1ec6916 | 1316 | SCM_DEFINE (scm_getpid, "getpid", 0, 0, 0, |
1bbd0b84 | 1317 | (), |
1e6808ea | 1318 | "Return an integer representing the current process ID.") |
1bbd0b84 | 1319 | #define FUNC_NAME s_scm_getpid |
0f2d19dd | 1320 | { |
e11e83f3 | 1321 | return scm_from_ulong (getpid ()); |
0f2d19dd | 1322 | } |
1bbd0b84 | 1323 | #undef FUNC_NAME |
0f2d19dd | 1324 | |
a1ec6916 | 1325 | SCM_DEFINE (scm_putenv, "putenv", 1, 0, 0, |
1bbd0b84 | 1326 | (SCM str), |
b380b885 MD |
1327 | "Modifies the environment of the current process, which is\n" |
1328 | "also the default environment inherited by child processes.\n\n" | |
1329 | "If @var{string} is of the form @code{NAME=VALUE} then it will be written\n" | |
1330 | "directly into the environment, replacing any existing environment string\n" | |
1331 | "with\n" | |
1332 | "name matching @code{NAME}. If @var{string} does not contain an equal\n" | |
1333 | "sign, then any existing string with name matching @var{string} will\n" | |
1334 | "be removed.\n\n" | |
1335 | "The return value is unspecified.") | |
1bbd0b84 | 1336 | #define FUNC_NAME s_scm_putenv |
0f2d19dd | 1337 | { |
f158788f | 1338 | int rv; |
f015614a | 1339 | char *c_str = scm_to_locale_string (str); |
002409fe | 1340 | |
f015614a | 1341 | if (strchr (c_str, '=') == NULL) |
002409fe | 1342 | { |
5b7ecf1b KR |
1343 | /* We want no "=" in the argument to mean remove the variable from the |
1344 | environment, but not all putenv()s understand this, for example | |
1345 | FreeBSD 4.8 doesn't. Getting it happening everywhere is a bit | |
1346 | painful. What unsetenv() exists, we use that, of course. | |
1347 | ||
1348 | Traditionally putenv("NAME") removes a variable, for example that's | |
1349 | what we have to do on Solaris 9 (it doesn't have an unsetenv). | |
1350 | ||
1351 | But on DOS and on that DOS overlay manager thing called W-whatever, | |
1352 | putenv("NAME=") must be used (it too doesn't have an unsetenv). | |
1353 | ||
1354 | Supposedly on AIX a putenv("NAME") could cause a segfault, but also | |
1355 | supposedly AIX 5.3 and up has unsetenv() available so should be ok | |
1356 | with the latter there. | |
1357 | ||
1358 | For the moment we hard code the DOS putenv("NAME=") style under | |
1359 | __MINGW32__ and do the traditional everywhere else. Such | |
1360 | system-name tests are bad, of course. It'd be possible to use a | |
1361 | configure test when doing a a native build. For example GNU R has | |
1362 | such a test (see R_PUTENV_AS_UNSETENV in | |
1363 | https://svn.r-project.org/R/trunk/m4/R.m4). But when cross | |
1364 | compiling there'd want to be a guess, one probably based on the | |
1365 | system name (ie. mingw or not), thus landing back in basically the | |
1366 | present hard-coded situation. Another possibility for a cross | |
1367 | build would be to try "NAME" then "NAME=" at runtime, if that's not | |
1368 | too much like overkill. */ | |
1369 | ||
1370 | #if HAVE_UNSETENV | |
1371 | /* when unsetenv() exists then we use it */ | |
f015614a MV |
1372 | unsetenv (c_str); |
1373 | free (c_str); | |
5b7ecf1b KR |
1374 | #elif defined (__MINGW32__) |
1375 | /* otherwise putenv("NAME=") on DOS */ | |
f158788f | 1376 | int e; |
23d72566 | 1377 | size_t len = strlen (c_str); |
edea856c | 1378 | char *ptr = scm_malloc (len + 2); |
f015614a MV |
1379 | strcpy (ptr, c_str); |
1380 | strcpy (ptr+len, "="); | |
1e498fbd | 1381 | rv = putenv (ptr); |
f015614a | 1382 | e = errno; free (ptr); free (c_str); errno = e; |
1e498fbd SJ |
1383 | if (rv < 0) |
1384 | SCM_SYSERROR; | |
5b7ecf1b KR |
1385 | #else |
1386 | /* otherwise traditional putenv("NAME") */ | |
1387 | rv = putenv (c_str); | |
1388 | if (rv < 0) | |
1389 | SCM_SYSERROR; | |
1390 | #endif | |
002409fe MV |
1391 | } |
1392 | else | |
1393 | { | |
fcc5d734 SJ |
1394 | #ifdef __MINGW32__ |
1395 | /* If str is "FOO=", ie. attempting to set an empty string, then | |
1396 | we need to see if it's been successful. On MINGW, "FOO=" | |
1397 | means remove FOO from the environment. As a workaround, we | |
1398 | set "FOO= ", ie. a space, and then modify the string returned | |
1399 | by getenv. It's not enough just to modify the string we set, | |
1400 | because MINGW putenv copies it. */ | |
f015614a | 1401 | |
23d72566 KR |
1402 | { |
1403 | size_t len = strlen (c_str); | |
1404 | if (c_str[len-1] == '=') | |
1405 | { | |
1406 | char *ptr = scm_malloc (len+2); | |
1407 | strcpy (ptr, c_str); | |
1408 | strcpy (ptr+len, " "); | |
1409 | rv = putenv (ptr); | |
1410 | if (rv < 0) | |
1411 | { | |
1412 | int eno = errno; | |
1413 | free (c_str); | |
1414 | errno = eno; | |
1415 | SCM_SYSERROR; | |
1416 | } | |
1417 | /* truncate to just the name */ | |
1418 | c_str[len-1] = '\0'; | |
1419 | ptr = getenv (c_str); | |
1420 | if (ptr) | |
1421 | ptr[0] = '\0'; | |
1422 | return SCM_UNSPECIFIED; | |
1423 | } | |
1424 | } | |
fcc5d734 SJ |
1425 | #endif /* __MINGW32__ */ |
1426 | ||
f015614a MV |
1427 | /* Leave c_str in the environment. */ |
1428 | ||
1429 | rv = putenv (c_str); | |
002409fe MV |
1430 | if (rv < 0) |
1431 | SCM_SYSERROR; | |
1432 | } | |
f93ddd39 | 1433 | return SCM_UNSPECIFIED; |
0f2d19dd | 1434 | } |
1bbd0b84 | 1435 | #undef FUNC_NAME |
0f2d19dd | 1436 | |
b89c4943 | 1437 | /* This mutex is used to serialize invocations of `setlocale ()' on non-GNU |
a2f00b9b LC |
1438 | systems (i.e., systems where a reentrant locale API is not available). It |
1439 | is also acquired before calls to `nl_langinfo ()'. See `i18n.c' for | |
1440 | details. */ | |
1441 | scm_i_pthread_mutex_t scm_i_locale_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; | |
b89c4943 | 1442 | |
f25f761d | 1443 | #ifdef HAVE_SETLOCALE |
b89c4943 | 1444 | |
a1ec6916 | 1445 | SCM_DEFINE (scm_setlocale, "setlocale", 1, 1, 0, |
1bbd0b84 | 1446 | (SCM category, SCM locale), |
1e6808ea MG |
1447 | "If @var{locale} is omitted, return the current value of the\n" |
1448 | "specified locale category as a system-dependent string.\n" | |
1449 | "@var{category} should be specified using the values\n" | |
1450 | "@code{LC_COLLATE}, @code{LC_ALL} etc.\n" | |
1451 | "\n" | |
1452 | "Otherwise the specified locale category is set to the string\n" | |
1453 | "@var{locale} and the new value is returned as a\n" | |
1454 | "system-dependent string. If @var{locale} is an empty string,\n" | |
bb2c02f2 | 1455 | "the locale will be set using environment variables.") |
1bbd0b84 | 1456 | #define FUNC_NAME s_scm_setlocale |
0f2d19dd | 1457 | { |
a2f00b9b | 1458 | int c_category; |
0f2d19dd JB |
1459 | char *clocale; |
1460 | char *rv; | |
1461 | ||
661ae7ab | 1462 | scm_dynwind_begin (0); |
f015614a | 1463 | |
0f2d19dd JB |
1464 | if (SCM_UNBNDP (locale)) |
1465 | { | |
1466 | clocale = NULL; | |
1467 | } | |
1468 | else | |
1469 | { | |
f015614a | 1470 | clocale = scm_to_locale_string (locale); |
661ae7ab | 1471 | scm_dynwind_free (clocale); |
0f2d19dd JB |
1472 | } |
1473 | ||
a2f00b9b LC |
1474 | c_category = scm_i_to_lc_category (category, 1); |
1475 | ||
b89c4943 | 1476 | scm_i_pthread_mutex_lock (&scm_i_locale_mutex); |
a2f00b9b | 1477 | rv = setlocale (c_category, clocale); |
b89c4943 | 1478 | scm_i_pthread_mutex_unlock (&scm_i_locale_mutex); |
b89c4943 | 1479 | |
02b754d3 | 1480 | if (rv == NULL) |
41b74b7d KR |
1481 | { |
1482 | /* POSIX and C99 don't say anything about setlocale setting errno, so | |
1483 | force a sensible value here. glibc leaves ENOENT, which would be | |
1484 | fine, but it's not a documented feature. */ | |
1485 | errno = EINVAL; | |
1486 | SCM_SYSERROR; | |
1487 | } | |
f015614a | 1488 | |
a17d2654 LC |
1489 | /* Recompute the standard SRFI-14 character sets in a locale-dependent |
1490 | (actually charset-dependent) way. */ | |
1491 | scm_srfi_14_compute_char_sets (); | |
1492 | ||
661ae7ab | 1493 | scm_dynwind_end (); |
f015614a | 1494 | return scm_from_locale_string (rv); |
0f2d19dd | 1495 | } |
1bbd0b84 | 1496 | #undef FUNC_NAME |
f25f761d | 1497 | #endif /* HAVE_SETLOCALE */ |
0f2d19dd | 1498 | |
f25f761d | 1499 | #ifdef HAVE_MKNOD |
a1ec6916 | 1500 | SCM_DEFINE (scm_mknod, "mknod", 4, 0, 0, |
1bbd0b84 | 1501 | (SCM path, SCM type, SCM perms, SCM dev), |
b380b885 MD |
1502 | "Creates a new special file, such as a file corresponding to a device.\n" |
1503 | "@var{path} specifies the name of the file. @var{type} should\n" | |
1504 | "be one of the following symbols:\n" | |
1505 | "regular, directory, symlink, block-special, char-special,\n" | |
1506 | "fifo, or socket. @var{perms} (an integer) specifies the file permissions.\n" | |
1507 | "@var{dev} (an integer) specifies which device the special file refers\n" | |
1508 | "to. Its exact interpretation depends on the kind of special file\n" | |
1509 | "being created.\n\n" | |
1510 | "E.g.,\n" | |
1e6808ea | 1511 | "@lisp\n" |
09831f94 | 1512 | "(mknod \"/dev/fd0\" 'block-special #o660 (+ (* 2 256) 2))\n" |
1e6808ea | 1513 | "@end lisp\n\n" |
a3c8b9fc | 1514 | "The return value is unspecified.") |
1bbd0b84 | 1515 | #define FUNC_NAME s_scm_mknod |
0f2d19dd | 1516 | { |
0f2d19dd | 1517 | int val; |
cc95e00a | 1518 | const char *p; |
82a76bdf | 1519 | int ctype = 0; |
19468eff | 1520 | |
a6d9e5ab | 1521 | SCM_VALIDATE_STRING (1, path); |
34d19ef6 | 1522 | SCM_VALIDATE_SYMBOL (2, type); |
19468eff | 1523 | |
cc95e00a | 1524 | p = scm_i_symbol_chars (type); |
19468eff GH |
1525 | if (strcmp (p, "regular") == 0) |
1526 | ctype = S_IFREG; | |
1527 | else if (strcmp (p, "directory") == 0) | |
1528 | ctype = S_IFDIR; | |
23f2b9a3 KR |
1529 | #ifdef S_IFLNK |
1530 | /* systems without symlinks probably don't have S_IFLNK defined */ | |
19468eff GH |
1531 | else if (strcmp (p, "symlink") == 0) |
1532 | ctype = S_IFLNK; | |
23f2b9a3 | 1533 | #endif |
19468eff GH |
1534 | else if (strcmp (p, "block-special") == 0) |
1535 | ctype = S_IFBLK; | |
1536 | else if (strcmp (p, "char-special") == 0) | |
1537 | ctype = S_IFCHR; | |
1538 | else if (strcmp (p, "fifo") == 0) | |
1539 | ctype = S_IFIFO; | |
e655d034 | 1540 | #ifdef S_IFSOCK |
19468eff GH |
1541 | else if (strcmp (p, "socket") == 0) |
1542 | ctype = S_IFSOCK; | |
e655d034 | 1543 | #endif |
19468eff | 1544 | else |
34d19ef6 | 1545 | SCM_OUT_OF_RANGE (2, type); |
19468eff | 1546 | |
f015614a MV |
1547 | STRING_SYSCALL (path, c_path, |
1548 | val = mknod (c_path, | |
1549 | ctype | scm_to_int (perms), | |
1550 | scm_to_int (dev))); | |
02b754d3 | 1551 | if (val != 0) |
1bbd0b84 | 1552 | SCM_SYSERROR; |
02b754d3 | 1553 | return SCM_UNSPECIFIED; |
0f2d19dd | 1554 | } |
1bbd0b84 | 1555 | #undef FUNC_NAME |
f25f761d | 1556 | #endif /* HAVE_MKNOD */ |
0f2d19dd | 1557 | |
f25f761d | 1558 | #ifdef HAVE_NICE |
a1ec6916 | 1559 | SCM_DEFINE (scm_nice, "nice", 1, 0, 0, |
1bbd0b84 | 1560 | (SCM incr), |
b380b885 MD |
1561 | "Increment the priority of the current process by @var{incr}. A higher\n" |
1562 | "priority value means that the process runs less often.\n" | |
1563 | "The return value is unspecified.") | |
1bbd0b84 | 1564 | #define FUNC_NAME s_scm_nice |
0f2d19dd | 1565 | { |
f1c82f55 KR |
1566 | /* nice() returns "prio-NZERO" on success or -1 on error, but -1 can arise |
1567 | from "prio-NZERO", so an error must be detected from errno changed */ | |
1568 | errno = 0; | |
1569 | nice (scm_to_int (incr)); | |
1570 | if (errno != 0) | |
1bbd0b84 | 1571 | SCM_SYSERROR; |
02b754d3 | 1572 | return SCM_UNSPECIFIED; |
0f2d19dd | 1573 | } |
1bbd0b84 | 1574 | #undef FUNC_NAME |
f25f761d | 1575 | #endif /* HAVE_NICE */ |
0f2d19dd | 1576 | |
f25f761d | 1577 | #ifdef HAVE_SYNC |
a1ec6916 | 1578 | SCM_DEFINE (scm_sync, "sync", 0, 0, 0, |
1bbd0b84 | 1579 | (), |
b380b885 MD |
1580 | "Flush the operating system disk buffers.\n" |
1581 | "The return value is unspecified.") | |
1bbd0b84 | 1582 | #define FUNC_NAME s_scm_sync |
0f2d19dd | 1583 | { |
0f2d19dd | 1584 | sync(); |
127ec750 | 1585 | return SCM_UNSPECIFIED; |
0f2d19dd | 1586 | } |
1bbd0b84 | 1587 | #undef FUNC_NAME |
f25f761d | 1588 | #endif /* HAVE_SYNC */ |
0f2d19dd | 1589 | |
33bea692 KR |
1590 | |
1591 | /* crypt() returns a pointer to a static buffer, so we use scm_i_misc_mutex | |
1592 | to avoid another thread overwriting it. A test program running crypt | |
1593 | continuously in two threads can be quickly seen tripping this problem. | |
1594 | crypt() is pretty slow normally, so a mutex shouldn't add much overhead. | |
1595 | ||
1596 | glibc has a thread-safe crypt_r, but (in version 2.3.2) it runs a lot | |
1597 | slower (about 5x) than plain crypt if you pass an uninitialized data | |
1598 | block each time. Presumably there's some one-time setups. The best way | |
1599 | to use crypt_r for parallel execution in multiple threads would probably | |
1600 | be to maintain a little pool of initialized crypt_data structures, take | |
1601 | one and use it, then return it to the pool. That pool could be garbage | |
1602 | collected so it didn't add permanently to memory use if only a few crypt | |
1603 | calls are made. But we expect crypt will be used rarely, and even more | |
1604 | rarely will there be any desire for lots of parallel execution on | |
1605 | multiple cpus. So for now we don't bother with anything fancy, just | |
1606 | ensure it works. */ | |
1607 | ||
b9a7b725 | 1608 | #if HAVE_CRYPT |
33bea692 | 1609 | SCM_DEFINE (scm_crypt, "crypt", 2, 0, 0, |
94e6d793 MG |
1610 | (SCM key, SCM salt), |
1611 | "Encrypt @var{key} using @var{salt} as the salt value to the\n" | |
9401323e | 1612 | "crypt(3) library call.") |
94e6d793 MG |
1613 | #define FUNC_NAME s_scm_crypt |
1614 | { | |
33bea692 | 1615 | SCM ret; |
23d72566 | 1616 | char *c_key, *c_salt, *c_ret; |
94e6d793 | 1617 | |
661ae7ab MV |
1618 | scm_dynwind_begin (0); |
1619 | scm_i_dynwind_pthread_mutex_lock (&scm_i_misc_mutex); | |
33bea692 | 1620 | |
f015614a | 1621 | c_key = scm_to_locale_string (key); |
661ae7ab | 1622 | scm_dynwind_free (c_key); |
f015614a | 1623 | c_salt = scm_to_locale_string (salt); |
661ae7ab | 1624 | scm_dynwind_free (c_salt); |
f015614a | 1625 | |
23d72566 KR |
1626 | /* The Linux crypt(3) man page says crypt will return NULL and set errno |
1627 | on error. (Eg. ENOSYS if legal restrictions mean it cannot be | |
1628 | implemented). */ | |
1629 | c_ret = crypt (c_key, c_salt); | |
1630 | if (c_ret == NULL) | |
1631 | SCM_SYSERROR; | |
33bea692 | 1632 | |
23d72566 | 1633 | ret = scm_from_locale_string (c_ret); |
661ae7ab | 1634 | scm_dynwind_end (); |
33bea692 | 1635 | return ret; |
94e6d793 MG |
1636 | } |
1637 | #undef FUNC_NAME | |
b9a7b725 | 1638 | #endif /* HAVE_CRYPT */ |
94e6d793 MG |
1639 | |
1640 | #if HAVE_CHROOT | |
1641 | SCM_DEFINE (scm_chroot, "chroot", 1, 0, 0, | |
1642 | (SCM path), | |
1643 | "Change the root directory to that specified in @var{path}.\n" | |
1644 | "This directory will be used for path names beginning with\n" | |
1645 | "@file{/}. The root directory is inherited by all children\n" | |
1646 | "of the current process. Only the superuser may change the\n" | |
1647 | "root directory.") | |
1648 | #define FUNC_NAME s_scm_chroot | |
1649 | { | |
f015614a | 1650 | int rv; |
94e6d793 | 1651 | |
f015614a MV |
1652 | WITH_STRING (path, c_path, |
1653 | rv = chroot (c_path)); | |
1654 | if (rv == -1) | |
94e6d793 MG |
1655 | SCM_SYSERROR; |
1656 | return SCM_UNSPECIFIED; | |
1657 | } | |
1658 | #undef FUNC_NAME | |
1659 | #endif /* HAVE_CHROOT */ | |
1660 | ||
7beabedb MG |
1661 | |
1662 | #ifdef __MINGW32__ | |
1663 | /* Wrapper function to supplying `getlogin()' under Windows. */ | |
1664 | static char * getlogin (void) | |
1665 | { | |
1666 | static char user[256]; | |
1667 | static unsigned long len = 256; | |
1668 | ||
1669 | if (!GetUserName (user, &len)) | |
1670 | return NULL; | |
1671 | return user; | |
1672 | } | |
1673 | #endif /* __MINGW32__ */ | |
1674 | ||
1675 | ||
4f68365d | 1676 | #if defined (HAVE_GETLOGIN) || defined (__MINGW32__) |
94e6d793 MG |
1677 | SCM_DEFINE (scm_getlogin, "getlogin", 0, 0, 0, |
1678 | (void), | |
1679 | "Return a string containing the name of the user logged in on\n" | |
1680 | "the controlling terminal of the process, or @code{#f} if this\n" | |
1681 | "information cannot be obtained.") | |
1682 | #define FUNC_NAME s_scm_getlogin | |
1683 | { | |
1684 | char * p; | |
1685 | ||
1686 | p = getlogin (); | |
1687 | if (!p || !*p) | |
1688 | return SCM_BOOL_F; | |
cc95e00a | 1689 | return scm_from_locale_string (p); |
94e6d793 MG |
1690 | } |
1691 | #undef FUNC_NAME | |
1692 | #endif /* HAVE_GETLOGIN */ | |
1693 | ||
1694 | #if HAVE_CUSERID | |
1695 | SCM_DEFINE (scm_cuserid, "cuserid", 0, 0, 0, | |
1696 | (void), | |
1697 | "Return a string containing a user name associated with the\n" | |
1698 | "effective user id of the process. Return @code{#f} if this\n" | |
1699 | "information cannot be obtained.") | |
1700 | #define FUNC_NAME s_scm_cuserid | |
1701 | { | |
1b317eb1 | 1702 | char buf[L_cuserid]; |
94e6d793 MG |
1703 | char * p; |
1704 | ||
1b317eb1 | 1705 | p = cuserid (buf); |
94e6d793 MG |
1706 | if (!p || !*p) |
1707 | return SCM_BOOL_F; | |
cc95e00a | 1708 | return scm_from_locale_string (p); |
94e6d793 MG |
1709 | } |
1710 | #undef FUNC_NAME | |
1711 | #endif /* HAVE_CUSERID */ | |
1712 | ||
1713 | #if HAVE_GETPRIORITY | |
1714 | SCM_DEFINE (scm_getpriority, "getpriority", 2, 0, 0, | |
1715 | (SCM which, SCM who), | |
1716 | "Return the scheduling priority of the process, process group\n" | |
1717 | "or user, as indicated by @var{which} and @var{who}. @var{which}\n" | |
1718 | "is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}\n" | |
1719 | "or @code{PRIO_USER}, and @var{who} is interpreted relative to\n" | |
1720 | "@var{which} (a process identifier for @code{PRIO_PROCESS},\n" | |
1721 | "process group identifier for @code{PRIO_PGRP}, and a user\n" | |
1722 | "identifier for @code{PRIO_USER}. A zero value of @var{who}\n" | |
1723 | "denotes the current process, process group, or user. Return\n" | |
1724 | "the highest priority (lowest numerical value) of any of the\n" | |
1725 | "specified processes.") | |
1726 | #define FUNC_NAME s_scm_getpriority | |
1727 | { | |
1728 | int cwhich, cwho, ret; | |
1729 | ||
a55c2b68 MV |
1730 | cwhich = scm_to_int (which); |
1731 | cwho = scm_to_int (who); | |
94e6d793 MG |
1732 | |
1733 | /* We have to clear errno and examine it later, because -1 is a | |
1734 | legal return value for getpriority(). */ | |
1735 | errno = 0; | |
1736 | ret = getpriority (cwhich, cwho); | |
1737 | if (errno != 0) | |
1738 | SCM_SYSERROR; | |
a55c2b68 | 1739 | return scm_from_int (ret); |
94e6d793 MG |
1740 | } |
1741 | #undef FUNC_NAME | |
1742 | #endif /* HAVE_GETPRIORITY */ | |
1743 | ||
1744 | #if HAVE_SETPRIORITY | |
1745 | SCM_DEFINE (scm_setpriority, "setpriority", 3, 0, 0, | |
1746 | (SCM which, SCM who, SCM prio), | |
1747 | "Set the scheduling priority of the process, process group\n" | |
1748 | "or user, as indicated by @var{which} and @var{who}. @var{which}\n" | |
1749 | "is one of the variables @code{PRIO_PROCESS}, @code{PRIO_PGRP}\n" | |
1750 | "or @code{PRIO_USER}, and @var{who} is interpreted relative to\n" | |
1751 | "@var{which} (a process identifier for @code{PRIO_PROCESS},\n" | |
1752 | "process group identifier for @code{PRIO_PGRP}, and a user\n" | |
1753 | "identifier for @code{PRIO_USER}. A zero value of @var{who}\n" | |
1754 | "denotes the current process, process group, or user.\n" | |
1755 | "@var{prio} is a value in the range -20 and 20, the default\n" | |
1756 | "priority is 0; lower priorities cause more favorable\n" | |
1757 | "scheduling. Sets the priority of all of the specified\n" | |
1758 | "processes. Only the super-user may lower priorities.\n" | |
1759 | "The return value is not specified.") | |
1760 | #define FUNC_NAME s_scm_setpriority | |
1761 | { | |
1762 | int cwhich, cwho, cprio; | |
1763 | ||
a55c2b68 MV |
1764 | cwhich = scm_to_int (which); |
1765 | cwho = scm_to_int (who); | |
1766 | cprio = scm_to_int (prio); | |
94e6d793 MG |
1767 | |
1768 | if (setpriority (cwhich, cwho, cprio) == -1) | |
1769 | SCM_SYSERROR; | |
1770 | return SCM_UNSPECIFIED; | |
1771 | } | |
1772 | #undef FUNC_NAME | |
1773 | #endif /* HAVE_SETPRIORITY */ | |
1774 | ||
1775 | #if HAVE_GETPASS | |
1776 | SCM_DEFINE (scm_getpass, "getpass", 1, 0, 0, | |
1777 | (SCM prompt), | |
1778 | "Display @var{prompt} to the standard error output and read\n" | |
1779 | "a password from @file{/dev/tty}. If this file is not\n" | |
1780 | "accessible, it reads from standard input. The password may be\n" | |
1781 | "up to 127 characters in length. Additional characters and the\n" | |
1782 | "terminating newline character are discarded. While reading\n" | |
1783 | "the password, echoing and the generation of signals by special\n" | |
1784 | "characters is disabled.") | |
1785 | #define FUNC_NAME s_scm_getpass | |
1786 | { | |
1787 | char * p; | |
1788 | SCM passwd; | |
1789 | ||
1790 | SCM_VALIDATE_STRING (1, prompt); | |
94e6d793 | 1791 | |
f015614a MV |
1792 | WITH_STRING (prompt, c_prompt, |
1793 | p = getpass(c_prompt)); | |
1794 | passwd = scm_from_locale_string (p); | |
94e6d793 MG |
1795 | |
1796 | /* Clear out the password in the static buffer. */ | |
1797 | memset (p, 0, strlen (p)); | |
1798 | ||
1799 | return passwd; | |
1800 | } | |
1801 | #undef FUNC_NAME | |
1802 | #endif /* HAVE_GETPASS */ | |
1803 | ||
8f99e3f3 SJ |
1804 | /* Wrapper function for flock() support under M$-Windows. */ |
1805 | #ifdef __MINGW32__ | |
1806 | # include <io.h> | |
1807 | # include <sys/locking.h> | |
1808 | # include <errno.h> | |
1809 | # ifndef _LK_UNLCK | |
1810 | /* Current MinGW package fails to define this. *sigh* */ | |
1811 | # define _LK_UNLCK 0 | |
1812 | # endif | |
1813 | # define LOCK_EX 1 | |
1814 | # define LOCK_UN 2 | |
1815 | # define LOCK_SH 4 | |
1816 | # define LOCK_NB 8 | |
1817 | ||
1818 | static int flock (int fd, int operation) | |
1819 | { | |
1820 | long pos, len; | |
1821 | int ret, err; | |
1822 | ||
1823 | /* Disable invalid arguments. */ | |
1824 | if (((operation & (LOCK_EX | LOCK_SH)) == (LOCK_EX | LOCK_SH)) || | |
1825 | ((operation & (LOCK_EX | LOCK_UN)) == (LOCK_EX | LOCK_UN)) || | |
1826 | ((operation & (LOCK_SH | LOCK_UN)) == (LOCK_SH | LOCK_UN))) | |
1827 | { | |
1828 | errno = EINVAL; | |
1829 | return -1; | |
1830 | } | |
1831 | ||
1832 | /* Determine mode of operation and discard unsupported ones. */ | |
1833 | if (operation == (LOCK_NB | LOCK_EX)) | |
1834 | operation = _LK_NBLCK; | |
1835 | else if (operation & LOCK_UN) | |
1836 | operation = _LK_UNLCK; | |
1837 | else if (operation == LOCK_EX) | |
1838 | operation = _LK_LOCK; | |
1839 | else | |
1840 | { | |
1841 | errno = EINVAL; | |
1842 | return -1; | |
1843 | } | |
1844 | ||
1845 | /* Save current file pointer and seek to beginning. */ | |
1846 | if ((pos = lseek (fd, 0, SEEK_CUR)) == -1 || (len = filelength (fd)) == -1) | |
1847 | return -1; | |
1848 | lseek (fd, 0L, SEEK_SET); | |
1849 | ||
1850 | /* Deadlock if necessary. */ | |
1851 | do | |
1852 | { | |
1853 | ret = _locking (fd, operation, len); | |
1854 | } | |
1855 | while (ret == -1 && errno == EDEADLOCK); | |
1856 | ||
1857 | /* Produce meaningful error message. */ | |
1858 | if (errno == EACCES && operation == _LK_NBLCK) | |
1859 | err = EDEADLOCK; | |
1860 | else | |
1861 | err = errno; | |
1862 | ||
1863 | /* Return to saved file position pointer. */ | |
1864 | lseek (fd, pos, SEEK_SET); | |
1865 | errno = err; | |
1866 | return ret; | |
1867 | } | |
1868 | #endif /* __MINGW32__ */ | |
1869 | ||
1870 | #if HAVE_FLOCK || defined (__MINGW32__) | |
94e6d793 MG |
1871 | SCM_DEFINE (scm_flock, "flock", 2, 0, 0, |
1872 | (SCM file, SCM operation), | |
1873 | "Apply or remove an advisory lock on an open file.\n" | |
1874 | "@var{operation} specifies the action to be done:\n" | |
0b91f1db KR |
1875 | "\n" |
1876 | "@defvar LOCK_SH\n" | |
94e6d793 MG |
1877 | "Shared lock. More than one process may hold a shared lock\n" |
1878 | "for a given file at a given time.\n" | |
0b91f1db KR |
1879 | "@end defvar\n" |
1880 | "@defvar LOCK_EX\n" | |
94e6d793 MG |
1881 | "Exclusive lock. Only one process may hold an exclusive lock\n" |
1882 | "for a given file at a given time.\n" | |
0b91f1db KR |
1883 | "@end defvar\n" |
1884 | "@defvar LOCK_UN\n" | |
94e6d793 | 1885 | "Unlock the file.\n" |
0b91f1db KR |
1886 | "@end defvar\n" |
1887 | "@defvar LOCK_NB\n" | |
1888 | "Don't block when locking. This is combined with one of the\n" | |
1889 | "other operations using @code{logior}. If @code{flock} would\n" | |
1890 | "block an @code{EWOULDBLOCK} error is thrown.\n" | |
1891 | "@end defvar\n" | |
1892 | "\n" | |
94e6d793 | 1893 | "The return value is not specified. @var{file} may be an open\n" |
0b91f1db KR |
1894 | "file descriptor or an open file descriptor port.\n" |
1895 | "\n" | |
1896 | "Note that @code{flock} does not lock files across NFS.") | |
94e6d793 MG |
1897 | #define FUNC_NAME s_scm_flock |
1898 | { | |
a55c2b68 | 1899 | int fdes; |
94e6d793 | 1900 | |
a55c2b68 MV |
1901 | if (scm_is_integer (file)) |
1902 | fdes = scm_to_int (file); | |
94e6d793 MG |
1903 | else |
1904 | { | |
1905 | SCM_VALIDATE_OPFPORT (2, file); | |
1906 | ||
1907 | fdes = SCM_FPORT_FDES (file); | |
1908 | } | |
a55c2b68 | 1909 | if (flock (fdes, scm_to_int (operation)) == -1) |
94e6d793 MG |
1910 | SCM_SYSERROR; |
1911 | return SCM_UNSPECIFIED; | |
1912 | } | |
1913 | #undef FUNC_NAME | |
1914 | #endif /* HAVE_FLOCK */ | |
1915 | ||
1916 | #if HAVE_SETHOSTNAME | |
1917 | SCM_DEFINE (scm_sethostname, "sethostname", 1, 0, 0, | |
1918 | (SCM name), | |
1919 | "Set the host name of the current processor to @var{name}. May\n" | |
1920 | "only be used by the superuser. The return value is not\n" | |
1921 | "specified.") | |
1922 | #define FUNC_NAME s_scm_sethostname | |
1923 | { | |
f015614a | 1924 | int rv; |
94e6d793 | 1925 | |
f015614a MV |
1926 | WITH_STRING (name, c_name, |
1927 | rv = sethostname (c_name, strlen(c_name))); | |
1928 | if (rv == -1) | |
94e6d793 MG |
1929 | SCM_SYSERROR; |
1930 | return SCM_UNSPECIFIED; | |
1931 | } | |
1932 | #undef FUNC_NAME | |
1933 | #endif /* HAVE_SETHOSTNAME */ | |
1934 | ||
b28f5b3c | 1935 | |
94e6d793 MG |
1936 | #if HAVE_GETHOSTNAME |
1937 | SCM_DEFINE (scm_gethostname, "gethostname", 0, 0, 0, | |
1938 | (void), | |
1939 | "Return the host name of the current processor.") | |
1940 | #define FUNC_NAME s_scm_gethostname | |
1941 | { | |
b28f5b3c DH |
1942 | #ifdef MAXHOSTNAMELEN |
1943 | ||
1944 | /* Various systems define MAXHOSTNAMELEN (including Solaris in fact). | |
1945 | * On GNU/Linux this doesn't include the terminating '\0', hence "+ 1". */ | |
1946 | const int len = MAXHOSTNAMELEN + 1; | |
1947 | char *const p = scm_malloc (len); | |
1948 | const int res = gethostname (p, len); | |
1949 | ||
661ae7ab MV |
1950 | scm_dynwind_begin (0); |
1951 | scm_dynwind_unwind_handler (free, p, 0); | |
b28f5b3c DH |
1952 | |
1953 | #else | |
94e6d793 | 1954 | |
0eaf1055 | 1955 | /* Default 256 is for Solaris, under Linux ENAMETOOLONG is returned if not |
b28f5b3c DH |
1956 | * large enough. SUSv2 specifies 255 maximum too, apparently. */ |
1957 | int len = 256; | |
1958 | int res; | |
1959 | char *p; | |
0eaf1055 | 1960 | |
b28f5b3c | 1961 | # if HAVE_SYSCONF && defined (_SC_HOST_NAME_MAX) |
0eaf1055 KR |
1962 | |
1963 | /* POSIX specifies the HOST_NAME_MAX system parameter for the max size, | |
b28f5b3c DH |
1964 | * which may reflect a particular kernel configuration. |
1965 | * Must watch out for this existing but giving -1, as happens for instance | |
1966 | * in gnu/linux glibc 2.3.2. */ | |
0eaf1055 | 1967 | { |
b28f5b3c | 1968 | const long int n = sysconf (_SC_HOST_NAME_MAX); |
0eaf1055 KR |
1969 | if (n != -1L) |
1970 | len = n; | |
1971 | } | |
b28f5b3c DH |
1972 | |
1973 | # endif | |
1974 | ||
1975 | p = scm_malloc (len); | |
1976 | ||
661ae7ab MV |
1977 | scm_dynwind_begin (0); |
1978 | scm_dynwind_unwind_handler (free, p, 0); | |
0eaf1055 | 1979 | |
94e6d793 MG |
1980 | res = gethostname (p, len); |
1981 | while (res == -1 && errno == ENAMETOOLONG) | |
1982 | { | |
94e6d793 | 1983 | len *= 2; |
b28f5b3c DH |
1984 | |
1985 | /* scm_realloc may throw an exception. */ | |
1986 | p = scm_realloc (p, len); | |
94e6d793 MG |
1987 | res = gethostname (p, len); |
1988 | } | |
b28f5b3c DH |
1989 | |
1990 | #endif | |
1991 | ||
94e6d793 MG |
1992 | if (res == -1) |
1993 | { | |
b28f5b3c DH |
1994 | const int save_errno = errno; |
1995 | ||
2b829bbb | 1996 | /* No guile exceptions can occur before we have freed p's memory. */ |
661ae7ab | 1997 | scm_dynwind_end (); |
4c9419ac | 1998 | free (p); |
b28f5b3c | 1999 | |
22865124 | 2000 | errno = save_errno; |
94e6d793 MG |
2001 | SCM_SYSERROR; |
2002 | } | |
b28f5b3c DH |
2003 | else |
2004 | { | |
cc95e00a MV |
2005 | /* scm_from_locale_string may throw an exception. */ |
2006 | const SCM name = scm_from_locale_string (p); | |
b28f5b3c | 2007 | |
2b829bbb | 2008 | /* No guile exceptions can occur before we have freed p's memory. */ |
661ae7ab | 2009 | scm_dynwind_end (); |
b28f5b3c DH |
2010 | free (p); |
2011 | ||
2012 | return name; | |
2013 | } | |
94e6d793 MG |
2014 | } |
2015 | #undef FUNC_NAME | |
2016 | #endif /* HAVE_GETHOSTNAME */ | |
2017 | ||
b28f5b3c | 2018 | |
b89c4943 | 2019 | void |
0f2d19dd | 2020 | scm_init_posix () |
0f2d19dd JB |
2021 | { |
2022 | scm_add_feature ("posix"); | |
2023 | #ifdef HAVE_GETEUID | |
2024 | scm_add_feature ("EIDs"); | |
2025 | #endif | |
2026 | #ifdef WAIT_ANY | |
e11e83f3 | 2027 | scm_c_define ("WAIT_ANY", scm_from_int (WAIT_ANY)); |
0f2d19dd JB |
2028 | #endif |
2029 | #ifdef WAIT_MYPGRP | |
e11e83f3 | 2030 | scm_c_define ("WAIT_MYPGRP", scm_from_int (WAIT_MYPGRP)); |
0f2d19dd JB |
2031 | #endif |
2032 | #ifdef WNOHANG | |
e11e83f3 | 2033 | scm_c_define ("WNOHANG", scm_from_int (WNOHANG)); |
0f2d19dd JB |
2034 | #endif |
2035 | #ifdef WUNTRACED | |
e11e83f3 | 2036 | scm_c_define ("WUNTRACED", scm_from_int (WUNTRACED)); |
0f2d19dd JB |
2037 | #endif |
2038 | ||
0f2d19dd | 2039 | /* access() symbols. */ |
e11e83f3 MV |
2040 | scm_c_define ("R_OK", scm_from_int (R_OK)); |
2041 | scm_c_define ("W_OK", scm_from_int (W_OK)); | |
2042 | scm_c_define ("X_OK", scm_from_int (X_OK)); | |
2043 | scm_c_define ("F_OK", scm_from_int (F_OK)); | |
0f2d19dd JB |
2044 | |
2045 | #ifdef LC_COLLATE | |
e11e83f3 | 2046 | scm_c_define ("LC_COLLATE", scm_from_int (LC_COLLATE)); |
0f2d19dd JB |
2047 | #endif |
2048 | #ifdef LC_CTYPE | |
e11e83f3 | 2049 | scm_c_define ("LC_CTYPE", scm_from_int (LC_CTYPE)); |
0f2d19dd JB |
2050 | #endif |
2051 | #ifdef LC_MONETARY | |
e11e83f3 | 2052 | scm_c_define ("LC_MONETARY", scm_from_int (LC_MONETARY)); |
0f2d19dd JB |
2053 | #endif |
2054 | #ifdef LC_NUMERIC | |
e11e83f3 | 2055 | scm_c_define ("LC_NUMERIC", scm_from_int (LC_NUMERIC)); |
0f2d19dd JB |
2056 | #endif |
2057 | #ifdef LC_TIME | |
e11e83f3 | 2058 | scm_c_define ("LC_TIME", scm_from_int (LC_TIME)); |
0f2d19dd JB |
2059 | #endif |
2060 | #ifdef LC_MESSAGES | |
e11e83f3 | 2061 | scm_c_define ("LC_MESSAGES", scm_from_int (LC_MESSAGES)); |
0f2d19dd JB |
2062 | #endif |
2063 | #ifdef LC_ALL | |
e11e83f3 | 2064 | scm_c_define ("LC_ALL", scm_from_int (LC_ALL)); |
0f2d19dd | 2065 | #endif |
9361f762 MV |
2066 | #ifdef LC_PAPER |
2067 | scm_c_define ("LC_PAPER", scm_from_int (LC_PAPER)); | |
2068 | #endif | |
2069 | #ifdef LC_NAME | |
2070 | scm_c_define ("LC_NAME", scm_from_int (LC_NAME)); | |
2071 | #endif | |
2072 | #ifdef LC_ADDRESS | |
2073 | scm_c_define ("LC_ADDRESS", scm_from_int (LC_ADDRESS)); | |
2074 | #endif | |
2075 | #ifdef LC_TELEPHONE | |
2076 | scm_c_define ("LC_TELEPHONE", scm_from_int (LC_TELEPHONE)); | |
2077 | #endif | |
2078 | #ifdef LC_MEASUREMENT | |
2079 | scm_c_define ("LC_MEASUREMENT", scm_from_int (LC_MEASUREMENT)); | |
2080 | #endif | |
2081 | #ifdef LC_IDENTIFICATION | |
2082 | scm_c_define ("LC_IDENTIFICATION", scm_from_int (LC_IDENTIFICATION)); | |
2083 | #endif | |
bd9e24b3 | 2084 | #ifdef PIPE_BUF |
b9bd8526 | 2085 | scm_c_define ("PIPE_BUF", scm_from_long (PIPE_BUF)); |
bd9e24b3 GH |
2086 | #endif |
2087 | ||
94e6d793 | 2088 | #ifdef PRIO_PROCESS |
e11e83f3 | 2089 | scm_c_define ("PRIO_PROCESS", scm_from_int (PRIO_PROCESS)); |
94e6d793 MG |
2090 | #endif |
2091 | #ifdef PRIO_PGRP | |
e11e83f3 | 2092 | scm_c_define ("PRIO_PGRP", scm_from_int (PRIO_PGRP)); |
94e6d793 MG |
2093 | #endif |
2094 | #ifdef PRIO_USER | |
e11e83f3 | 2095 | scm_c_define ("PRIO_USER", scm_from_int (PRIO_USER)); |
94e6d793 MG |
2096 | #endif |
2097 | ||
2098 | #ifdef LOCK_SH | |
e11e83f3 | 2099 | scm_c_define ("LOCK_SH", scm_from_int (LOCK_SH)); |
94e6d793 MG |
2100 | #endif |
2101 | #ifdef LOCK_EX | |
e11e83f3 | 2102 | scm_c_define ("LOCK_EX", scm_from_int (LOCK_EX)); |
94e6d793 MG |
2103 | #endif |
2104 | #ifdef LOCK_UN | |
e11e83f3 | 2105 | scm_c_define ("LOCK_UN", scm_from_int (LOCK_UN)); |
94e6d793 MG |
2106 | #endif |
2107 | #ifdef LOCK_NB | |
e11e83f3 | 2108 | scm_c_define ("LOCK_NB", scm_from_int (LOCK_NB)); |
94e6d793 MG |
2109 | #endif |
2110 | ||
a0599745 MD |
2111 | #include "libguile/cpp_sig_symbols.c" |
2112 | #include "libguile/posix.x" | |
0f2d19dd | 2113 | } |
89e00824 ML |
2114 | |
2115 | /* | |
2116 | Local Variables: | |
2117 | c-file-style: "gnu" | |
2118 | End: | |
2119 | */ |