Commit | Line | Data |
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2b829bbb | 1 | /* Copyright (C) 1996,1997,1998,1999,2000,2001, 2002, 2004, 2006 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 |
464ee095 KR |
20 | |
21 | /* See stime.c for comments on why _POSIX_C_SOURCE is not always defined. */ | |
00fbf1e0 | 22 | #define _GNU_SOURCE /* ask glibc for everything */ |
2b829bbb | 23 | #define _LARGEFILE64_SOURCE /* ask for stat64 etc */ |
464ee095 KR |
24 | #ifdef __hpux |
25 | #define _POSIX_C_SOURCE 199506L /* for readdir_r */ | |
edea856c | 26 | #endif |
6d484a0b | 27 | |
83079454 RB |
28 | #if HAVE_CONFIG_H |
29 | # include <config.h> | |
30 | #endif | |
31 | ||
8ab3d8a0 KR |
32 | /* This blob per the Autoconf manual (under "Particular Functions"). */ |
33 | #if HAVE_ALLOCA_H | |
34 | # include <alloca.h> | |
35 | #elif defined __GNUC__ | |
36 | # define alloca __builtin_alloca | |
37 | #elif defined _AIX | |
38 | # define alloca __alloca | |
39 | #elif defined _MSC_VER | |
40 | # include <malloc.h> | |
41 | # define alloca _alloca | |
42 | #else | |
43 | # include <stddef.h> | |
44 | # ifdef __cplusplus | |
45 | extern "C" | |
2b829bbb | 46 | # endif |
8ab3d8a0 | 47 | void *alloca (size_t); |
23f2b9a3 | 48 | #endif |
2b829bbb | 49 | |
3d8d56df | 50 | #include <stdio.h> |
e6e2e95a MD |
51 | #include <errno.h> |
52 | ||
a0599745 MD |
53 | #include "libguile/_scm.h" |
54 | #include "libguile/smob.h" | |
55 | #include "libguile/feature.h" | |
56 | #include "libguile/fports.h" | |
2b829bbb | 57 | #include "libguile/private-gc.h" /* for SCM_MAX */ |
a0599745 MD |
58 | #include "libguile/iselect.h" |
59 | #include "libguile/strings.h" | |
60 | #include "libguile/vectors.h" | |
c96d76b8 | 61 | #include "libguile/lang.h" |
1299a0f1 | 62 | #include "libguile/dynwind.h" |
0f2d19dd | 63 | |
a0599745 MD |
64 | #include "libguile/validate.h" |
65 | #include "libguile/filesys.h" | |
def804a3 | 66 | |
0f2d19dd | 67 | \f |
def804a3 JB |
68 | #ifdef HAVE_IO_H |
69 | #include <io.h> | |
70 | #endif | |
71 | ||
e0c73a1c MV |
72 | #ifdef HAVE_DIRECT_H |
73 | #include <direct.h> | |
74 | #endif | |
75 | ||
0f2d19dd JB |
76 | #ifdef TIME_WITH_SYS_TIME |
77 | # include <sys/time.h> | |
78 | # include <time.h> | |
79 | #else | |
80 | # if HAVE_SYS_TIME_H | |
81 | # include <sys/time.h> | |
82 | # else | |
83 | # include <time.h> | |
84 | # endif | |
85 | #endif | |
86 | ||
87 | #ifdef HAVE_UNISTD_H | |
88 | #include <unistd.h> | |
89 | #endif | |
90 | ||
3594582b | 91 | #ifdef LIBC_H_WITH_UNISTD_H |
1f9e2226 JB |
92 | #include <libc.h> |
93 | #endif | |
94 | ||
0f2d19dd JB |
95 | #ifdef HAVE_SYS_SELECT_H |
96 | #include <sys/select.h> | |
97 | #endif | |
98 | ||
1f9e2226 JB |
99 | #ifdef HAVE_STRING_H |
100 | #include <string.h> | |
101 | #endif | |
102 | ||
8cc71382 | 103 | #include <sys/types.h> |
0f2d19dd JB |
104 | #include <sys/stat.h> |
105 | #include <fcntl.h> | |
106 | ||
82893676 | 107 | #ifdef HAVE_PWD_H |
0f2d19dd | 108 | #include <pwd.h> |
82893676 | 109 | #endif |
0f2d19dd JB |
110 | |
111 | ||
e0c73a1c MV |
112 | #if defined (__MINGW32__) || defined (_MSC_VER) || defined (__BORLANDC__) |
113 | # include "win32-dirent.h" | |
114 | # define NAMLEN(dirent) strlen((dirent)->d_name) | |
2b829bbb | 115 | /* The following bits are per AC_HEADER_DIRENT doco in the autoconf manual */ |
e0c73a1c | 116 | #elif HAVE_DIRENT_H |
0f2d19dd JB |
117 | # include <dirent.h> |
118 | # define NAMLEN(dirent) strlen((dirent)->d_name) | |
119 | #else | |
120 | # define dirent direct | |
121 | # define NAMLEN(dirent) (dirent)->d_namlen | |
122 | # if HAVE_SYS_NDIR_H | |
123 | # include <sys/ndir.h> | |
124 | # endif | |
125 | # if HAVE_SYS_DIR_H | |
126 | # include <sys/dir.h> | |
127 | # endif | |
128 | # if HAVE_NDIR_H | |
129 | # include <ndir.h> | |
130 | # endif | |
131 | #endif | |
132 | ||
d7b8a21a JB |
133 | /* Ultrix has S_IFSOCK, but no S_ISSOCK. Ipe! */ |
134 | #if defined (S_IFSOCK) && ! defined (S_ISSOCK) | |
135 | #define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) | |
136 | #endif | |
82893676 MG |
137 | |
138 | /* The MinGW gcc does not define the S_ISSOCK macro. Any other native Windows | |
139 | compiler like BorlandC or MSVC has none of these macros defined. */ | |
140 | #ifdef __MINGW32__ | |
8f99e3f3 SJ |
141 | |
142 | # ifdef _S_IFIFO | |
143 | # undef _S_IFIFO | |
144 | # endif | |
145 | # ifdef _S_IFCHR | |
146 | # undef _S_IFCHR | |
147 | # endif | |
148 | # ifdef _S_IFBLK | |
149 | # undef _S_IFBLK | |
150 | # endif | |
151 | # ifdef _S_IFDIR | |
152 | # undef _S_IFDIR | |
153 | # endif | |
154 | # ifdef _S_IFREG | |
155 | # undef _S_IFREG | |
156 | # endif | |
157 | # ifdef _S_IFSOCK | |
158 | # undef _S_IFSOCK | |
159 | # endif | |
160 | ||
161 | # define _S_IFIFO 0x1000 /* FIFO */ | |
162 | # define _S_IFCHR 0x2000 /* Character */ | |
163 | # define _S_IFBLK 0x3000 /* Block */ | |
164 | # define _S_IFDIR 0x4000 /* Directory */ | |
165 | # define _S_IFREG 0x8000 /* Regular */ | |
166 | # define _S_IFSOCK 0xC000 /* Socket */ | |
167 | ||
168 | # ifdef S_ISBLK | |
169 | # undef S_ISBLK | |
170 | # endif | |
171 | # ifdef S_ISFIFO | |
172 | # undef S_ISFIFO | |
173 | # endif | |
174 | # ifdef S_ISCHR | |
175 | # undef S_ISCHR | |
176 | # endif | |
177 | # ifdef S_ISDIR | |
178 | # undef S_ISDIR | |
179 | # endif | |
180 | # ifdef S_ISREG | |
181 | # undef S_ISREG | |
182 | # endif | |
183 | # ifdef S_ISSOCK | |
184 | # undef S_ISSOCK | |
185 | # endif | |
186 | ||
187 | # define S_ISBLK(mode) (((mode) & _S_IFMT) == _S_IFBLK) | |
82893676 | 188 | # define S_ISFIFO(mode) (((mode) & _S_IFMT) == _S_IFIFO) |
8f99e3f3 SJ |
189 | # define S_ISCHR(mode) (((mode) & _S_IFMT) == _S_IFCHR) |
190 | # define S_ISDIR(mode) (((mode) & _S_IFMT) == _S_IFDIR) | |
191 | # define S_ISREG(mode) (((mode) & _S_IFMT) == _S_IFREG) | |
192 | # define S_ISSOCK(mode) (((mode) & _S_IFMT) == _S_IFSOCK) | |
193 | ||
194 | #endif /* __MINGW32__ */ | |
82893676 MG |
195 | |
196 | /* Some more definitions for the native Windows port. */ | |
197 | #ifdef __MINGW32__ | |
198 | # define mkdir(path, mode) mkdir (path) | |
199 | # define fsync(fd) _commit (fd) | |
200 | # define fchmod(fd, mode) (-1) | |
201 | #endif /* __MINGW32__ */ | |
2b829bbb | 202 | |
8ab3d8a0 KR |
203 | /* dirfd() returns the file descriptor underlying a "DIR*" directory stream. |
204 | Found on MacOS X for instance. The following definition is for Solaris | |
205 | 10, it's probably not right elsewhere, but that's ok, it shouldn't be | |
206 | used elsewhere. Crib note: If we need more then gnulib has a dirfd.m4 | |
207 | figuring out how to get the fd (dirfd function, dirfd macro, dd_fd field, | |
208 | or d_fd field). */ | |
209 | #ifndef dirfd | |
210 | #define dirfd(dirstream) ((dirstream)->dd_fd) | |
2b829bbb KR |
211 | #endif |
212 | ||
0f2d19dd JB |
213 | \f |
214 | ||
1299a0f1 MV |
215 | /* Two helper macros for an often used pattern */ |
216 | ||
217 | #define STRING_SYSCALL(str,cstr,code) \ | |
218 | do { \ | |
219 | int eno; \ | |
220 | char *cstr = scm_to_locale_string (str); \ | |
221 | SCM_SYSCALL (code); \ | |
222 | eno = errno; free (cstr); errno = eno; \ | |
223 | } while (0) | |
224 | ||
225 | #define STRING2_SYSCALL(str1,cstr1,str2,cstr2,code) \ | |
226 | do { \ | |
227 | int eno; \ | |
228 | char *cstr1, *cstr2; \ | |
661ae7ab | 229 | scm_dynwind_begin (0); \ |
1299a0f1 | 230 | cstr1 = scm_to_locale_string (str1); \ |
661ae7ab | 231 | scm_dynwind_free (cstr1); \ |
1299a0f1 | 232 | cstr2 = scm_to_locale_string (str2); \ |
661ae7ab | 233 | scm_dynwind_free (cstr2); \ |
1299a0f1 | 234 | SCM_SYSCALL (code); \ |
661ae7ab | 235 | eno = errno; scm_dynwind_end (); errno = eno; \ |
1299a0f1 | 236 | } while (0) |
0f2d19dd JB |
237 | |
238 | \f | |
239 | ||
240 | /* {Permissions} | |
241 | */ | |
242 | ||
82893676 | 243 | #ifdef HAVE_CHOWN |
a1ec6916 | 244 | SCM_DEFINE (scm_chown, "chown", 3, 0, 0, |
1bbd0b84 | 245 | (SCM object, SCM owner, SCM group), |
d831b039 GH |
246 | "Change the ownership and group of the file referred to by @var{object} to\n" |
247 | "the integer values @var{owner} and @var{group}. @var{object} can be\n" | |
248 | "a string containing a file name or, if the platform\n" | |
249 | "supports fchown, a port or integer file descriptor\n" | |
250 | "which is open on the file. The return value\n" | |
d3818c29 | 251 | "is unspecified.\n\n" |
d831b039 | 252 | "If @var{object} is a symbolic link, either the\n" |
d3818c29 MD |
253 | "ownership of the link or the ownership of the referenced file will be\n" |
254 | "changed depending on the operating system (lchown is\n" | |
255 | "unsupported at present). If @var{owner} or @var{group} is specified\n" | |
256 | "as @code{-1}, then that ID is not changed.") | |
1bbd0b84 | 257 | #define FUNC_NAME s_scm_chown |
0f2d19dd | 258 | { |
6afcd3b2 | 259 | int rv; |
02b754d3 | 260 | |
78446828 MV |
261 | object = SCM_COERCE_OUTPORT (object); |
262 | ||
d831b039 | 263 | #ifdef HAVE_FCHOWN |
a55c2b68 | 264 | if (scm_is_integer (object) || (SCM_OPFPORTP (object))) |
6afcd3b2 | 265 | { |
a55c2b68 MV |
266 | int fdes = (SCM_OPFPORTP (object)? |
267 | SCM_FPORT_FDES (object) : scm_to_int (object)); | |
d831b039 | 268 | |
a55c2b68 | 269 | SCM_SYSCALL (rv = fchown (fdes, scm_to_int (owner), scm_to_int (group))); |
6afcd3b2 GH |
270 | } |
271 | else | |
d831b039 | 272 | #endif |
6afcd3b2 | 273 | { |
1299a0f1 MV |
274 | STRING_SYSCALL (object, c_object, |
275 | rv = chown (c_object, | |
276 | scm_to_int (owner), scm_to_int (group))); | |
6afcd3b2 GH |
277 | } |
278 | if (rv == -1) | |
1bbd0b84 | 279 | SCM_SYSERROR; |
02b754d3 | 280 | return SCM_UNSPECIFIED; |
0f2d19dd | 281 | } |
1bbd0b84 | 282 | #undef FUNC_NAME |
82893676 | 283 | #endif /* HAVE_CHOWN */ |
0f2d19dd JB |
284 | |
285 | ||
a1ec6916 | 286 | SCM_DEFINE (scm_chmod, "chmod", 2, 0, 0, |
1bbd0b84 | 287 | (SCM object, SCM mode), |
d3818c29 MD |
288 | "Changes the permissions of the file referred to by @var{obj}.\n" |
289 | "@var{obj} can be a string containing a file name or a port or integer file\n" | |
290 | "descriptor which is open on a file (in which case @code{fchmod} is used\n" | |
291 | "as the underlying system call).\n" | |
292 | "@var{mode} specifies\n" | |
293 | "the new permissions as a decimal number, e.g., @code{(chmod \"foo\" #o755)}.\n" | |
294 | "The return value is unspecified.") | |
1bbd0b84 | 295 | #define FUNC_NAME s_scm_chmod |
0f2d19dd JB |
296 | { |
297 | int rv; | |
6afcd3b2 GH |
298 | int fdes; |
299 | ||
78446828 MV |
300 | object = SCM_COERCE_OUTPORT (object); |
301 | ||
a55c2b68 | 302 | if (scm_is_integer (object) || SCM_OPFPORTP (object)) |
89958ad0 | 303 | { |
a55c2b68 MV |
304 | if (scm_is_integer (object)) |
305 | fdes = scm_to_int (object); | |
6afcd3b2 | 306 | else |
77a76b64 | 307 | fdes = SCM_FPORT_FDES (object); |
a55c2b68 | 308 | SCM_SYSCALL (rv = fchmod (fdes, scm_to_int (mode))); |
89958ad0 | 309 | } |
0f2d19dd JB |
310 | else |
311 | { | |
1299a0f1 MV |
312 | STRING_SYSCALL (object, c_object, |
313 | rv = chmod (c_object, scm_to_int (mode))); | |
0f2d19dd | 314 | } |
6afcd3b2 | 315 | if (rv == -1) |
1bbd0b84 | 316 | SCM_SYSERROR; |
02b754d3 | 317 | return SCM_UNSPECIFIED; |
0f2d19dd | 318 | } |
1bbd0b84 | 319 | #undef FUNC_NAME |
0f2d19dd | 320 | |
a1ec6916 | 321 | SCM_DEFINE (scm_umask, "umask", 0, 1, 0, |
1bbd0b84 | 322 | (SCM mode), |
bb2c02f2 | 323 | "If @var{mode} is omitted, returns a decimal number representing the current\n" |
d3818c29 MD |
324 | "file creation mask. Otherwise the file creation mask is set to\n" |
325 | "@var{mode} and the previous value is returned.\n\n" | |
326 | "E.g., @code{(umask #o022)} sets the mask to octal 22, decimal 18.") | |
1bbd0b84 | 327 | #define FUNC_NAME s_scm_umask |
0f2d19dd JB |
328 | { |
329 | mode_t mask; | |
330 | if (SCM_UNBNDP (mode)) | |
331 | { | |
332 | mask = umask (0); | |
333 | umask (mask); | |
334 | } | |
335 | else | |
336 | { | |
a55c2b68 | 337 | mask = umask (scm_to_uint (mode)); |
0f2d19dd | 338 | } |
a55c2b68 | 339 | return scm_from_uint (mask); |
0f2d19dd | 340 | } |
1bbd0b84 | 341 | #undef FUNC_NAME |
0f2d19dd JB |
342 | |
343 | \f | |
0f2d19dd | 344 | |
a1ec6916 | 345 | SCM_DEFINE (scm_open_fdes, "open-fdes", 2, 1, 0, |
1bbd0b84 | 346 | (SCM path, SCM flags, SCM mode), |
1e6808ea MG |
347 | "Similar to @code{open} but return a file descriptor instead of\n" |
348 | "a port.") | |
1bbd0b84 | 349 | #define FUNC_NAME s_scm_open_fdes |
0f2d19dd JB |
350 | { |
351 | int fd; | |
3d8d56df | 352 | int iflags; |
6afcd3b2 | 353 | int imode; |
0f2d19dd | 354 | |
1be6b49c ML |
355 | iflags = SCM_NUM2INT (2, flags); |
356 | imode = SCM_NUM2INT_DEF (3, mode, 0666); | |
23f2b9a3 | 357 | STRING_SYSCALL (path, c_path, fd = open_or_open64 (c_path, iflags, imode)); |
3d8d56df | 358 | if (fd == -1) |
1bbd0b84 | 359 | SCM_SYSERROR; |
e11e83f3 | 360 | return scm_from_int (fd); |
6afcd3b2 | 361 | } |
1bbd0b84 | 362 | #undef FUNC_NAME |
6afcd3b2 | 363 | |
a1ec6916 | 364 | SCM_DEFINE (scm_open, "open", 2, 1, 0, |
1bbd0b84 | 365 | (SCM path, SCM flags, SCM mode), |
d3818c29 MD |
366 | "Open the file named by @var{path} for reading and/or writing.\n" |
367 | "@var{flags} is an integer specifying how the file should be opened.\n" | |
368 | "@var{mode} is an integer specifying the permission bits of the file, if\n" | |
369 | "it needs to be created, before the umask is applied. The default is 666\n" | |
370 | "(Unix itself has no default).\n\n" | |
371 | "@var{flags} can be constructed by combining variables using @code{logior}.\n" | |
372 | "Basic flags are:\n\n" | |
373 | "@defvar O_RDONLY\n" | |
374 | "Open the file read-only.\n" | |
375 | "@end defvar\n" | |
376 | "@defvar O_WRONLY\n" | |
9401323e | 377 | "Open the file write-only.\n" |
d3818c29 MD |
378 | "@end defvar\n" |
379 | "@defvar O_RDWR\n" | |
380 | "Open the file read/write.\n" | |
381 | "@end defvar\n" | |
382 | "@defvar O_APPEND\n" | |
383 | "Append to the file instead of truncating.\n" | |
384 | "@end defvar\n" | |
385 | "@defvar O_CREAT\n" | |
386 | "Create the file if it does not already exist.\n" | |
387 | "@end defvar\n\n" | |
388 | "See the Unix documentation of the @code{open} system call\n" | |
389 | "for additional flags.") | |
1bbd0b84 | 390 | #define FUNC_NAME s_scm_open |
6afcd3b2 GH |
391 | { |
392 | SCM newpt; | |
393 | char *port_mode; | |
394 | int fd; | |
6afcd3b2 GH |
395 | int iflags; |
396 | ||
e11e83f3 | 397 | fd = scm_to_int (scm_open_fdes (path, flags, mode)); |
1be6b49c | 398 | iflags = SCM_NUM2INT (2, flags); |
3d8d56df | 399 | if (iflags & O_RDWR) |
77a76b64 JB |
400 | { |
401 | if (iflags & O_APPEND) | |
402 | port_mode = "a+"; | |
403 | else if (iflags & O_CREAT) | |
404 | port_mode = "w+"; | |
405 | else | |
406 | port_mode = "r+"; | |
407 | } | |
3d8d56df | 408 | else { |
77a76b64 JB |
409 | if (iflags & O_APPEND) |
410 | port_mode = "a"; | |
411 | else if (iflags & O_WRONLY) | |
3d8d56df GH |
412 | port_mode = "w"; |
413 | else | |
414 | port_mode = "r"; | |
415 | } | |
77a76b64 | 416 | newpt = scm_fdes_to_port (fd, port_mode, path); |
3d8d56df | 417 | return newpt; |
0f2d19dd | 418 | } |
1bbd0b84 | 419 | #undef FUNC_NAME |
0f2d19dd | 420 | |
a1ec6916 | 421 | SCM_DEFINE (scm_close, "close", 1, 0, 0, |
1bbd0b84 | 422 | (SCM fd_or_port), |
8f85c0c6 | 423 | "Similar to close-port (@pxref{Closing, close-port}),\n" |
d3818c29 MD |
424 | "but also works on file descriptors. A side\n" |
425 | "effect of closing a file descriptor is that any ports using that file\n" | |
426 | "descriptor are moved to a different file descriptor and have\n" | |
427 | "their revealed counts set to zero.") | |
1bbd0b84 | 428 | #define FUNC_NAME s_scm_close |
eadd48de GH |
429 | { |
430 | int rv; | |
431 | int fd; | |
432 | ||
78446828 MV |
433 | fd_or_port = SCM_COERCE_OUTPORT (fd_or_port); |
434 | ||
0c95b57d | 435 | if (SCM_PORTP (fd_or_port)) |
eadd48de | 436 | return scm_close_port (fd_or_port); |
a55c2b68 | 437 | fd = scm_to_int (fd_or_port); |
eadd48de | 438 | scm_evict_ports (fd); /* see scsh manual. */ |
a9488d12 | 439 | SCM_SYSCALL (rv = close (fd)); |
eadd48de GH |
440 | /* following scsh, closing an already closed file descriptor is |
441 | not an error. */ | |
442 | if (rv < 0 && errno != EBADF) | |
1bbd0b84 | 443 | SCM_SYSERROR; |
7888309b | 444 | return scm_from_bool (rv >= 0); |
eadd48de | 445 | } |
1bbd0b84 | 446 | #undef FUNC_NAME |
eadd48de | 447 | |
c2ca4493 GH |
448 | SCM_DEFINE (scm_close_fdes, "close-fdes", 1, 0, 0, |
449 | (SCM fd), | |
450 | "A simple wrapper for the @code{close} system call.\n" | |
451 | "Close file descriptor @var{fd}, which must be an integer.\n" | |
452 | "Unlike close (@pxref{Ports and File Descriptors, close}),\n" | |
453 | "the file descriptor will be closed even if a port is using it.\n" | |
454 | "The return value is unspecified.") | |
455 | #define FUNC_NAME s_scm_close_fdes | |
456 | { | |
457 | int c_fd; | |
458 | int rv; | |
459 | ||
a55c2b68 | 460 | c_fd = scm_to_int (fd); |
c2ca4493 GH |
461 | SCM_SYSCALL (rv = close (c_fd)); |
462 | if (rv < 0) | |
463 | SCM_SYSERROR; | |
464 | return SCM_UNSPECIFIED; | |
465 | } | |
466 | #undef FUNC_NAME | |
467 | ||
0f2d19dd JB |
468 | \f |
469 | /* {Files} | |
470 | */ | |
1cc91f1b | 471 | |
ae5253c5 GH |
472 | SCM_SYMBOL (scm_sym_regular, "regular"); |
473 | SCM_SYMBOL (scm_sym_directory, "directory"); | |
23f2b9a3 | 474 | #ifdef S_ISLNK |
ae5253c5 | 475 | SCM_SYMBOL (scm_sym_symlink, "symlink"); |
f326ecf3 | 476 | #endif |
ae5253c5 GH |
477 | SCM_SYMBOL (scm_sym_block_special, "block-special"); |
478 | SCM_SYMBOL (scm_sym_char_special, "char-special"); | |
479 | SCM_SYMBOL (scm_sym_fifo, "fifo"); | |
480 | SCM_SYMBOL (scm_sym_sock, "socket"); | |
481 | SCM_SYMBOL (scm_sym_unknown, "unknown"); | |
482 | ||
0f2d19dd | 483 | static SCM |
2b829bbb | 484 | scm_stat2scm (struct stat_or_stat64 *stat_temp) |
0f2d19dd | 485 | { |
00ffa0e7 | 486 | SCM ans = scm_c_make_vector (15, SCM_UNSPECIFIED); |
ae5253c5 | 487 | |
4057a3e0 | 488 | SCM_SIMPLE_VECTOR_SET(ans, 0, scm_from_ulong (stat_temp->st_dev)); |
2b829bbb | 489 | SCM_SIMPLE_VECTOR_SET(ans, 1, scm_from_ino_t_or_ino64_t (stat_temp->st_ino)); |
4057a3e0 MV |
490 | SCM_SIMPLE_VECTOR_SET(ans, 2, scm_from_ulong (stat_temp->st_mode)); |
491 | SCM_SIMPLE_VECTOR_SET(ans, 3, scm_from_ulong (stat_temp->st_nlink)); | |
492 | SCM_SIMPLE_VECTOR_SET(ans, 4, scm_from_ulong (stat_temp->st_uid)); | |
493 | SCM_SIMPLE_VECTOR_SET(ans, 5, scm_from_ulong (stat_temp->st_gid)); | |
1fd85bc5 | 494 | #ifdef HAVE_STRUCT_STAT_ST_RDEV |
4057a3e0 | 495 | SCM_SIMPLE_VECTOR_SET(ans, 6, scm_from_ulong (stat_temp->st_rdev)); |
0f2d19dd | 496 | #else |
4057a3e0 | 497 | SCM_SIMPLE_VECTOR_SET(ans, 6, SCM_BOOL_F); |
0f2d19dd | 498 | #endif |
2b829bbb | 499 | SCM_SIMPLE_VECTOR_SET(ans, 7, scm_from_off_t_or_off64_t (stat_temp->st_size)); |
4057a3e0 MV |
500 | SCM_SIMPLE_VECTOR_SET(ans, 8, scm_from_ulong (stat_temp->st_atime)); |
501 | SCM_SIMPLE_VECTOR_SET(ans, 9, scm_from_ulong (stat_temp->st_mtime)); | |
502 | SCM_SIMPLE_VECTOR_SET(ans, 10, scm_from_ulong (stat_temp->st_ctime)); | |
1fd85bc5 | 503 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
4057a3e0 | 504 | SCM_SIMPLE_VECTOR_SET(ans, 11, scm_from_ulong (stat_temp->st_blksize)); |
0f2d19dd | 505 | #else |
4057a3e0 | 506 | SCM_SIMPLE_VECTOR_SET(ans, 11, scm_from_ulong (4096L)); |
0f2d19dd | 507 | #endif |
1fd85bc5 | 508 | #ifdef HAVE_STRUCT_STAT_ST_BLOCKS |
2b829bbb | 509 | SCM_SIMPLE_VECTOR_SET(ans, 12, scm_from_blkcnt_t_or_blkcnt64_t (stat_temp->st_blocks)); |
0f2d19dd | 510 | #else |
4057a3e0 | 511 | SCM_SIMPLE_VECTOR_SET(ans, 12, SCM_BOOL_F); |
0f2d19dd | 512 | #endif |
ae5253c5 GH |
513 | { |
514 | int mode = stat_temp->st_mode; | |
515 | ||
516 | if (S_ISREG (mode)) | |
4057a3e0 | 517 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_regular); |
ae5253c5 | 518 | else if (S_ISDIR (mode)) |
4057a3e0 | 519 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_directory); |
23f2b9a3 KR |
520 | #ifdef S_ISLNK |
521 | /* systems without symlinks probably don't have S_ISLNK */ | |
ae5253c5 | 522 | else if (S_ISLNK (mode)) |
4057a3e0 | 523 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_symlink); |
f326ecf3 | 524 | #endif |
ae5253c5 | 525 | else if (S_ISBLK (mode)) |
4057a3e0 | 526 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_block_special); |
ae5253c5 | 527 | else if (S_ISCHR (mode)) |
4057a3e0 | 528 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_char_special); |
ae5253c5 | 529 | else if (S_ISFIFO (mode)) |
4057a3e0 | 530 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_fifo); |
e655d034 | 531 | #ifdef S_ISSOCK |
ae5253c5 | 532 | else if (S_ISSOCK (mode)) |
4057a3e0 | 533 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_sock); |
e655d034 | 534 | #endif |
ae5253c5 | 535 | else |
4057a3e0 | 536 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_unknown); |
ae5253c5 | 537 | |
4057a3e0 | 538 | SCM_SIMPLE_VECTOR_SET(ans, 14, scm_from_int ((~S_IFMT) & mode)); |
ae5253c5 GH |
539 | |
540 | /* the layout of the bits in ve[14] is intended to be portable. | |
541 | If there are systems that don't follow the usual convention, | |
542 | the following could be used: | |
543 | ||
544 | tmp = 0; | |
545 | if (S_ISUID & mode) tmp += 1; | |
546 | tmp <<= 1; | |
547 | if (S_IRGRP & mode) tmp += 1; | |
548 | tmp <<= 1; | |
549 | if (S_ISVTX & mode) tmp += 1; | |
550 | tmp <<= 1; | |
551 | if (S_IRUSR & mode) tmp += 1; | |
552 | tmp <<= 1; | |
553 | if (S_IWUSR & mode) tmp += 1; | |
554 | tmp <<= 1; | |
555 | if (S_IXUSR & mode) tmp += 1; | |
556 | tmp <<= 1; | |
557 | if (S_IWGRP & mode) tmp += 1; | |
558 | tmp <<= 1; | |
559 | if (S_IXGRP & mode) tmp += 1; | |
560 | tmp <<= 1; | |
561 | if (S_IROTH & mode) tmp += 1; | |
562 | tmp <<= 1; | |
563 | if (S_IWOTH & mode) tmp += 1; | |
564 | tmp <<= 1; | |
565 | if (S_IXOTH & mode) tmp += 1; | |
566 | ||
4057a3e0 | 567 | SCM_SIMPLE_VECTOR_SET(ans, 14, scm_from_int (tmp)); |
ae5253c5 GH |
568 | |
569 | */ | |
570 | } | |
0f2d19dd JB |
571 | |
572 | return ans; | |
573 | } | |
574 | ||
e0c73a1c MV |
575 | #ifdef __MINGW32__ |
576 | /* | |
577 | * Try getting the appropiate stat buffer for a given file descriptor | |
578 | * under Windows. It differentiates between file, pipe and socket | |
579 | * descriptors. | |
580 | */ | |
581 | static int fstat_Win32 (int fdes, struct stat *buf) | |
582 | { | |
583 | int error, optlen = sizeof (int); | |
584 | ||
585 | memset (buf, 0, sizeof (struct stat)); | |
586 | ||
587 | /* Is this a socket ? */ | |
588 | if (getsockopt (fdes, SOL_SOCKET, SO_ERROR, (void *) &error, &optlen) >= 0) | |
589 | { | |
590 | buf->st_mode = _S_IFSOCK | _S_IREAD | _S_IWRITE | _S_IEXEC; | |
591 | buf->st_nlink = 1; | |
592 | buf->st_atime = buf->st_ctime = buf->st_mtime = time (NULL); | |
593 | return 0; | |
594 | } | |
595 | /* Maybe a regular file or pipe ? */ | |
596 | return fstat (fdes, buf); | |
597 | } | |
598 | #endif /* __MINGW32__ */ | |
599 | ||
a1ec6916 | 600 | SCM_DEFINE (scm_stat, "stat", 1, 0, 0, |
1bbd0b84 | 601 | (SCM object), |
1e6808ea MG |
602 | "Return an object containing various information about the file\n" |
603 | "determined by @var{obj}. @var{obj} can be a string containing\n" | |
604 | "a file name or a port or integer file descriptor which is open\n" | |
605 | "on a file (in which case @code{fstat} is used as the underlying\n" | |
606 | "system call).\n" | |
607 | "\n" | |
608 | "The object returned by @code{stat} can be passed as a single\n" | |
609 | "parameter to the following procedures, all of which return\n" | |
610 | "integers:\n" | |
611 | "\n" | |
d3818c29 MD |
612 | "@table @code\n" |
613 | "@item stat:dev\n" | |
614 | "The device containing the file.\n" | |
615 | "@item stat:ino\n" | |
1e6808ea MG |
616 | "The file serial number, which distinguishes this file from all\n" |
617 | "other files on the same device.\n" | |
d3818c29 | 618 | "@item stat:mode\n" |
1e6808ea MG |
619 | "The mode of the file. This includes file type information and\n" |
620 | "the file permission bits. See @code{stat:type} and\n" | |
621 | "@code{stat:perms} below.\n" | |
d3818c29 MD |
622 | "@item stat:nlink\n" |
623 | "The number of hard links to the file.\n" | |
624 | "@item stat:uid\n" | |
625 | "The user ID of the file's owner.\n" | |
626 | "@item stat:gid\n" | |
627 | "The group ID of the file.\n" | |
628 | "@item stat:rdev\n" | |
629 | "Device ID; this entry is defined only for character or block\n" | |
630 | "special files.\n" | |
631 | "@item stat:size\n" | |
632 | "The size of a regular file in bytes.\n" | |
633 | "@item stat:atime\n" | |
634 | "The last access time for the file.\n" | |
635 | "@item stat:mtime\n" | |
636 | "The last modification time for the file.\n" | |
637 | "@item stat:ctime\n" | |
638 | "The last modification time for the attributes of the file.\n" | |
639 | "@item stat:blksize\n" | |
1e6808ea MG |
640 | "The optimal block size for reading or writing the file, in\n" |
641 | "bytes.\n" | |
d3818c29 | 642 | "@item stat:blocks\n" |
1e6808ea MG |
643 | "The amount of disk space that the file occupies measured in\n" |
644 | "units of 512 byte blocks.\n" | |
645 | "@end table\n" | |
646 | "\n" | |
d3818c29 | 647 | "In addition, the following procedures return the information\n" |
1e6808ea MG |
648 | "from stat:mode in a more convenient form:\n" |
649 | "\n" | |
d3818c29 MD |
650 | "@table @code\n" |
651 | "@item stat:type\n" | |
652 | "A symbol representing the type of file. Possible values are\n" | |
1e6808ea MG |
653 | "regular, directory, symlink, block-special, char-special, fifo,\n" |
654 | "socket and unknown\n" | |
d3818c29 MD |
655 | "@item stat:perms\n" |
656 | "An integer representing the access permission bits.\n" | |
657 | "@end table") | |
1bbd0b84 | 658 | #define FUNC_NAME s_scm_stat |
0f2d19dd | 659 | { |
6afcd3b2 GH |
660 | int rv; |
661 | int fdes; | |
2b829bbb | 662 | struct stat_or_stat64 stat_temp; |
0f2d19dd | 663 | |
e11e83f3 | 664 | if (scm_is_integer (object)) |
36284627 | 665 | { |
e0c73a1c | 666 | #ifdef __MINGW32__ |
e11e83f3 | 667 | SCM_SYSCALL (rv = fstat_Win32 (scm_to_int (object), &stat_temp)); |
e0c73a1c | 668 | #else |
2b829bbb | 669 | SCM_SYSCALL (rv = fstat_or_fstat64 (scm_to_int (object), &stat_temp)); |
e0c73a1c | 670 | #endif |
36284627 | 671 | } |
7f9994d9 | 672 | else if (scm_is_string (object)) |
36284627 | 673 | { |
7f9994d9 | 674 | char *file = scm_to_locale_string (object); |
e0c73a1c | 675 | #ifdef __MINGW32__ |
7f9994d9 | 676 | char *p; |
e0c73a1c MV |
677 | p = file + strlen (file) - 1; |
678 | while (p > file && (*p == '/' || *p == '\\')) | |
679 | *p-- = '\0'; | |
7f9994d9 | 680 | #endif |
2b829bbb | 681 | SCM_SYSCALL (rv = stat_or_stat64 (file, &stat_temp)); |
e0c73a1c | 682 | free (file); |
36284627 | 683 | } |
1ea47048 | 684 | else |
0f2d19dd | 685 | { |
36284627 DH |
686 | object = SCM_COERCE_OUTPORT (object); |
687 | SCM_VALIDATE_OPFPORT (1, object); | |
688 | fdes = SCM_FPORT_FDES (object); | |
e0c73a1c MV |
689 | #ifdef __MINGW32__ |
690 | SCM_SYSCALL (rv = fstat_Win32 (fdes, &stat_temp)); | |
691 | #else | |
2b829bbb | 692 | SCM_SYSCALL (rv = fstat_or_fstat64 (fdes, &stat_temp)); |
e0c73a1c | 693 | #endif |
6afcd3b2 | 694 | } |
36284627 | 695 | |
6afcd3b2 | 696 | if (rv == -1) |
3d8d56df GH |
697 | { |
698 | int en = errno; | |
699 | ||
5d2d2ffc | 700 | SCM_SYSERROR_MSG ("~A: ~S", |
3572cd6b | 701 | scm_list_2 (scm_strerror (scm_from_int (en)), |
1afff620 | 702 | object), |
e0c08f17 | 703 | en); |
3d8d56df | 704 | } |
02b754d3 | 705 | return scm_stat2scm (&stat_temp); |
0f2d19dd | 706 | } |
1bbd0b84 | 707 | #undef FUNC_NAME |
0f2d19dd | 708 | |
0f2d19dd JB |
709 | \f |
710 | /* {Modifying Directories} | |
711 | */ | |
712 | ||
82893676 | 713 | #ifdef HAVE_LINK |
a1ec6916 | 714 | SCM_DEFINE (scm_link, "link", 2, 0, 0, |
1bbd0b84 | 715 | (SCM oldpath, SCM newpath), |
6d36532c GH |
716 | "Creates a new name @var{newpath} in the file system for the\n" |
717 | "file named by @var{oldpath}. If @var{oldpath} is a symbolic\n" | |
718 | "link, the link may or may not be followed depending on the\n" | |
719 | "system.") | |
1bbd0b84 | 720 | #define FUNC_NAME s_scm_link |
0f2d19dd JB |
721 | { |
722 | int val; | |
02b754d3 | 723 | |
1299a0f1 MV |
724 | STRING2_SYSCALL (oldpath, c_oldpath, |
725 | newpath, c_newpath, | |
726 | val = link (c_oldpath, c_newpath)); | |
02b754d3 | 727 | if (val != 0) |
1bbd0b84 | 728 | SCM_SYSERROR; |
02b754d3 | 729 | return SCM_UNSPECIFIED; |
0f2d19dd | 730 | } |
1bbd0b84 | 731 | #undef FUNC_NAME |
82893676 | 732 | #endif /* HAVE_LINK */ |
0f2d19dd | 733 | |
1299a0f1 MV |
734 | #ifdef HAVE_RENAME |
735 | #define my_rename rename | |
736 | #else | |
737 | static int | |
738 | my_rename (const char *oldname, const char *newname) | |
739 | { | |
740 | int rv; | |
0f2d19dd | 741 | |
1299a0f1 MV |
742 | SCM_SYSCALL (rv = link (oldname, newname)); |
743 | if (rv == 0) | |
744 | { | |
745 | SCM_SYSCALL (rv = unlink (oldname)); | |
746 | if (rv != 0) | |
747 | /* unlink failed. remove new name */ | |
748 | SCM_SYSCALL (unlink (newname)); | |
749 | } | |
750 | return rv; | |
751 | } | |
752 | #endif | |
0f2d19dd | 753 | |
a1ec6916 | 754 | SCM_DEFINE (scm_rename, "rename-file", 2, 0, 0, |
1bbd0b84 | 755 | (SCM oldname, SCM newname), |
6d36532c | 756 | "Renames the file specified by @var{oldname} to @var{newname}.\n" |
d3818c29 | 757 | "The return value is unspecified.") |
1bbd0b84 | 758 | #define FUNC_NAME s_scm_rename |
0f2d19dd JB |
759 | { |
760 | int rv; | |
1299a0f1 MV |
761 | |
762 | STRING2_SYSCALL (oldname, c_oldname, | |
763 | newname, c_newname, | |
764 | rv = my_rename (c_oldname, c_newname)); | |
02b754d3 | 765 | if (rv != 0) |
1bbd0b84 | 766 | SCM_SYSERROR; |
02b754d3 | 767 | return SCM_UNSPECIFIED; |
0f2d19dd | 768 | } |
1bbd0b84 | 769 | #undef FUNC_NAME |
0f2d19dd JB |
770 | |
771 | ||
3b3b36dd | 772 | SCM_DEFINE (scm_delete_file, "delete-file", 1, 0, 0, |
1bbd0b84 | 773 | (SCM str), |
d3818c29 | 774 | "Deletes (or \"unlinks\") the file specified by @var{path}.") |
1bbd0b84 | 775 | #define FUNC_NAME s_scm_delete_file |
2f3ed1ba JB |
776 | { |
777 | int ans; | |
1299a0f1 | 778 | STRING_SYSCALL (str, c_str, ans = unlink (c_str)); |
2f3ed1ba | 779 | if (ans != 0) |
1bbd0b84 | 780 | SCM_SYSERROR; |
2f3ed1ba JB |
781 | return SCM_UNSPECIFIED; |
782 | } | |
1bbd0b84 | 783 | #undef FUNC_NAME |
2f3ed1ba | 784 | |
f25f761d | 785 | #ifdef HAVE_MKDIR |
a1ec6916 | 786 | SCM_DEFINE (scm_mkdir, "mkdir", 1, 1, 0, |
1bbd0b84 | 787 | (SCM path, SCM mode), |
d3818c29 MD |
788 | "Create a new directory named by @var{path}. If @var{mode} is omitted\n" |
789 | "then the permissions of the directory file are set using the current\n" | |
790 | "umask. Otherwise they are set to the decimal value specified with\n" | |
791 | "@var{mode}. The return value is unspecified.") | |
1bbd0b84 | 792 | #define FUNC_NAME s_scm_mkdir |
0f2d19dd | 793 | { |
0f2d19dd JB |
794 | int rv; |
795 | mode_t mask; | |
1299a0f1 | 796 | |
0f2d19dd JB |
797 | if (SCM_UNBNDP (mode)) |
798 | { | |
799 | mask = umask (0); | |
800 | umask (mask); | |
1299a0f1 | 801 | STRING_SYSCALL (path, c_path, rv = mkdir (c_path, 0777 ^ mask)); |
0f2d19dd JB |
802 | } |
803 | else | |
804 | { | |
1299a0f1 | 805 | STRING_SYSCALL (path, c_path, rv = mkdir (c_path, scm_to_uint (mode))); |
0f2d19dd | 806 | } |
02b754d3 | 807 | if (rv != 0) |
1bbd0b84 | 808 | SCM_SYSERROR; |
02b754d3 | 809 | return SCM_UNSPECIFIED; |
0f2d19dd | 810 | } |
1bbd0b84 | 811 | #undef FUNC_NAME |
f25f761d | 812 | #endif /* HAVE_MKDIR */ |
0f2d19dd | 813 | |
f25f761d | 814 | #ifdef HAVE_RMDIR |
a1ec6916 | 815 | SCM_DEFINE (scm_rmdir, "rmdir", 1, 0, 0, |
1bbd0b84 | 816 | (SCM path), |
d3818c29 MD |
817 | "Remove the existing directory named by @var{path}. The directory must\n" |
818 | "be empty for this to succeed. The return value is unspecified.") | |
1bbd0b84 | 819 | #define FUNC_NAME s_scm_rmdir |
0f2d19dd | 820 | { |
0f2d19dd | 821 | int val; |
02b754d3 | 822 | |
1299a0f1 | 823 | STRING_SYSCALL (path, c_path, val = rmdir (c_path)); |
02b754d3 | 824 | if (val != 0) |
1bbd0b84 | 825 | SCM_SYSERROR; |
02b754d3 | 826 | return SCM_UNSPECIFIED; |
0f2d19dd | 827 | } |
1bbd0b84 | 828 | #undef FUNC_NAME |
f25f761d | 829 | #endif |
0f2d19dd JB |
830 | |
831 | \f | |
30ea841d | 832 | |
0f2d19dd JB |
833 | /* {Examining Directories} |
834 | */ | |
835 | ||
92c2555f | 836 | scm_t_bits scm_tc16_dir; |
0f2d19dd | 837 | |
30ea841d | 838 | |
a1ec6916 | 839 | SCM_DEFINE (scm_directory_stream_p, "directory-stream?", 1, 0, 0, |
1bbd0b84 | 840 | (SCM obj), |
1e6808ea MG |
841 | "Return a boolean indicating whether @var{object} is a directory\n" |
842 | "stream as returned by @code{opendir}.") | |
1bbd0b84 | 843 | #define FUNC_NAME s_scm_directory_stream_p |
77242ff9 | 844 | { |
7888309b | 845 | return scm_from_bool (SCM_DIRP (obj)); |
77242ff9 | 846 | } |
1bbd0b84 | 847 | #undef FUNC_NAME |
77242ff9 | 848 | |
30ea841d | 849 | |
a1ec6916 | 850 | SCM_DEFINE (scm_opendir, "opendir", 1, 0, 0, |
1bbd0b84 | 851 | (SCM dirname), |
d3818c29 MD |
852 | "Open the directory specified by @var{path} and return a directory\n" |
853 | "stream.") | |
1bbd0b84 | 854 | #define FUNC_NAME s_scm_opendir |
0f2d19dd JB |
855 | { |
856 | DIR *ds; | |
1299a0f1 | 857 | STRING_SYSCALL (dirname, c_dirname, ds = opendir (c_dirname)); |
02b754d3 | 858 | if (ds == NULL) |
1bbd0b84 | 859 | SCM_SYSERROR; |
30ea841d | 860 | SCM_RETURN_NEWSMOB (scm_tc16_dir | SCM_DIR_FLAG_OPEN, ds); |
0f2d19dd | 861 | } |
1bbd0b84 | 862 | #undef FUNC_NAME |
0f2d19dd JB |
863 | |
864 | ||
9be808d8 KR |
865 | /* FIXME: The glibc manual has a portability note that readdir_r may not |
866 | null-terminate its return string. The circumstances outlined for this | |
2b829bbb KR |
867 | are not clear, nor is it clear what should be done about it. Lets use |
868 | NAMLEN and worry about what else should be done if/when someone can | |
869 | figure it out. */ | |
9be808d8 | 870 | |
a1ec6916 | 871 | SCM_DEFINE (scm_readdir, "readdir", 1, 0, 0, |
1bbd0b84 | 872 | (SCM port), |
d3818c29 MD |
873 | "Return (as a string) the next directory entry from the directory stream\n" |
874 | "@var{stream}. If there is no remaining entry to be read then the\n" | |
875 | "end of file object is returned.") | |
1bbd0b84 | 876 | #define FUNC_NAME s_scm_readdir |
0f2d19dd | 877 | { |
2b829bbb | 878 | struct dirent_or_dirent64 *rdent; |
30ea841d DH |
879 | |
880 | SCM_VALIDATE_DIR (1, port); | |
881 | if (!SCM_DIR_OPEN_P (port)) | |
1afff620 | 882 | SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port)); |
30ea841d | 883 | |
9be808d8 | 884 | #if HAVE_READDIR_R |
2b829bbb KR |
885 | /* As noted in the glibc manual, on various systems (such as Solaris) the |
886 | d_name[] field is only 1 char and you're expected to size the dirent | |
887 | buffer for readdir_r based on NAME_MAX. The SCM_MAX expressions below | |
888 | effectively give either sizeof(d_name) or NAME_MAX+1, whichever is | |
889 | bigger. | |
890 | ||
891 | On solaris 10 there's no NAME_MAX constant, it's necessary to use | |
892 | pathconf(). We prefer NAME_MAX though, since it should be a constant | |
893 | and will therefore save a system call. We also prefer it since dirfd() | |
894 | is not available everywhere. | |
895 | ||
896 | An alternative to dirfd() would be to open() the directory and then use | |
897 | fdopendir(), if the latter is available. That'd let us hold the fd | |
898 | somewhere in the smob, or just the dirent size calculated once. */ | |
899 | { | |
900 | struct dirent_or_dirent64 de; /* just for sizeof */ | |
901 | DIR *ds = (DIR *) SCM_CELL_WORD_1 (port); | |
902 | size_t namlen; | |
903 | #ifdef NAME_MAX | |
904 | char buf [SCM_MAX (sizeof (de), | |
905 | sizeof (de) - sizeof (de.d_name) + NAME_MAX + 1)]; | |
9be808d8 | 906 | #else |
2b829bbb KR |
907 | char *buf; |
908 | long name_max = fpathconf (dirfd (ds), _PC_NAME_MAX); | |
909 | if (name_max == -1) | |
910 | SCM_SYSERROR; | |
911 | buf = alloca (SCM_MAX (sizeof (de), | |
912 | sizeof (de) - sizeof (de.d_name) + name_max + 1)); | |
9be808d8 | 913 | #endif |
2b829bbb KR |
914 | |
915 | errno = 0; | |
916 | SCM_SYSCALL (readdir_r_or_readdir64_r (ds, (struct dirent_or_dirent64 *) buf, &rdent)); | |
9be808d8 KR |
917 | if (errno != 0) |
918 | SCM_SYSERROR; | |
2b829bbb KR |
919 | if (! rdent) |
920 | return SCM_EOF_VAL; | |
921 | ||
922 | namlen = NAMLEN (rdent); | |
30ea841d | 923 | |
cc95e00a | 924 | return (rdent ? scm_from_locale_stringn (rdent->d_name, NAMLEN (rdent)) |
9be808d8 KR |
925 | : SCM_EOF_VAL); |
926 | } | |
2b829bbb KR |
927 | #else |
928 | { | |
929 | SCM ret; | |
930 | scm_dynwind_begin (0); | |
931 | scm_i_dynwind_pthread_mutex_lock (&scm_i_misc_mutex); | |
932 | ||
933 | errno = 0; | |
934 | SCM_SYSCALL (rdent = readdir_or_readdir64 ((DIR *) SCM_CELL_WORD_1 (port))); | |
935 | if (errno != 0) | |
936 | SCM_SYSERROR; | |
937 | ||
938 | ret = (rdent ? scm_from_locale_stringn (rdent->d_name, NAMLEN (rdent)) | |
939 | : SCM_EOF_VAL); | |
940 | ||
941 | scm_dynwind_end (); | |
942 | return ret; | |
943 | } | |
944 | #endif | |
0f2d19dd | 945 | } |
1bbd0b84 | 946 | #undef FUNC_NAME |
0f2d19dd JB |
947 | |
948 | ||
a1ec6916 | 949 | SCM_DEFINE (scm_rewinddir, "rewinddir", 1, 0, 0, |
1bbd0b84 | 950 | (SCM port), |
d3818c29 MD |
951 | "Reset the directory port @var{stream} so that the next call to\n" |
952 | "@code{readdir} will return the first directory entry.") | |
1bbd0b84 | 953 | #define FUNC_NAME s_scm_rewinddir |
0f2d19dd | 954 | { |
30ea841d DH |
955 | SCM_VALIDATE_DIR (1, port); |
956 | if (!SCM_DIR_OPEN_P (port)) | |
1afff620 | 957 | SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port)); |
30ea841d | 958 | |
4260a7fc | 959 | rewinddir ((DIR *) SCM_CELL_WORD_1 (port)); |
30ea841d | 960 | |
0f2d19dd JB |
961 | return SCM_UNSPECIFIED; |
962 | } | |
1bbd0b84 | 963 | #undef FUNC_NAME |
0f2d19dd JB |
964 | |
965 | ||
a1ec6916 | 966 | SCM_DEFINE (scm_closedir, "closedir", 1, 0, 0, |
1bbd0b84 | 967 | (SCM port), |
d3818c29 MD |
968 | "Close the directory stream @var{stream}.\n" |
969 | "The return value is unspecified.") | |
1bbd0b84 | 970 | #define FUNC_NAME s_scm_closedir |
0f2d19dd | 971 | { |
30ea841d | 972 | SCM_VALIDATE_DIR (1, port); |
02b754d3 | 973 | |
30ea841d | 974 | if (SCM_DIR_OPEN_P (port)) |
0f2d19dd | 975 | { |
30ea841d DH |
976 | int sts; |
977 | ||
978 | SCM_SYSCALL (sts = closedir ((DIR *) SCM_CELL_WORD_1 (port))); | |
979 | if (sts != 0) | |
980 | SCM_SYSERROR; | |
981 | ||
982 | SCM_SET_CELL_WORD_0 (port, scm_tc16_dir); | |
0f2d19dd | 983 | } |
30ea841d | 984 | |
02b754d3 | 985 | return SCM_UNSPECIFIED; |
0f2d19dd | 986 | } |
1bbd0b84 | 987 | #undef FUNC_NAME |
0f2d19dd JB |
988 | |
989 | ||
0f2d19dd | 990 | static int |
e81d98ec | 991 | scm_dir_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
0f2d19dd | 992 | { |
f8b16091 | 993 | scm_puts ("#<", port); |
30ea841d | 994 | if (!SCM_DIR_OPEN_P (exp)) |
f8b16091 | 995 | scm_puts ("closed: ", port); |
0d03da62 | 996 | scm_puts ("directory stream ", port); |
0345e278 | 997 | scm_uintprint (SCM_CELL_WORD_1 (exp), 16, port); |
f8b16091 | 998 | scm_putc ('>', port); |
0f2d19dd JB |
999 | return 1; |
1000 | } | |
1001 | ||
1cc91f1b | 1002 | |
1be6b49c | 1003 | static size_t |
1bbd0b84 | 1004 | scm_dir_free (SCM p) |
0f2d19dd | 1005 | { |
30ea841d | 1006 | if (SCM_DIR_OPEN_P (p)) |
4260a7fc | 1007 | closedir ((DIR *) SCM_CELL_WORD_1 (p)); |
0f2d19dd JB |
1008 | return 0; |
1009 | } | |
1010 | ||
0f2d19dd JB |
1011 | \f |
1012 | /* {Navigating Directories} | |
1013 | */ | |
1014 | ||
1015 | ||
a1ec6916 | 1016 | SCM_DEFINE (scm_chdir, "chdir", 1, 0, 0, |
1bbd0b84 | 1017 | (SCM str), |
d3818c29 MD |
1018 | "Change the current working directory to @var{path}.\n" |
1019 | "The return value is unspecified.") | |
1bbd0b84 | 1020 | #define FUNC_NAME s_scm_chdir |
0f2d19dd JB |
1021 | { |
1022 | int ans; | |
02b754d3 | 1023 | |
1299a0f1 | 1024 | STRING_SYSCALL (str, c_str, ans = chdir (c_str)); |
02b754d3 | 1025 | if (ans != 0) |
1bbd0b84 | 1026 | SCM_SYSERROR; |
02b754d3 | 1027 | return SCM_UNSPECIFIED; |
0f2d19dd | 1028 | } |
1bbd0b84 | 1029 | #undef FUNC_NAME |
0f2d19dd | 1030 | |
f25f761d | 1031 | #ifdef HAVE_GETCWD |
a1ec6916 | 1032 | SCM_DEFINE (scm_getcwd, "getcwd", 0, 0, 0, |
1bbd0b84 | 1033 | (), |
1e6808ea | 1034 | "Return the name of the current working directory.") |
1bbd0b84 | 1035 | #define FUNC_NAME s_scm_getcwd |
0f2d19dd | 1036 | { |
0f2d19dd | 1037 | char *rv; |
1be6b49c | 1038 | size_t size = 100; |
0f2d19dd JB |
1039 | char *wd; |
1040 | SCM result; | |
1041 | ||
4c9419ac | 1042 | wd = scm_malloc (size); |
0f2d19dd JB |
1043 | while ((rv = getcwd (wd, size)) == 0 && errno == ERANGE) |
1044 | { | |
4c9419ac | 1045 | free (wd); |
0f2d19dd | 1046 | size *= 2; |
4c9419ac | 1047 | wd = scm_malloc (size); |
0f2d19dd | 1048 | } |
02b754d3 | 1049 | if (rv == 0) |
11e1db06 KR |
1050 | { |
1051 | int save_errno = errno; | |
1052 | free (wd); | |
1053 | errno = save_errno; | |
1054 | SCM_SYSERROR; | |
1055 | } | |
cc95e00a | 1056 | result = scm_from_locale_stringn (wd, strlen (wd)); |
4c9419ac | 1057 | free (wd); |
0f2d19dd | 1058 | return result; |
0f2d19dd | 1059 | } |
1bbd0b84 | 1060 | #undef FUNC_NAME |
f25f761d | 1061 | #endif /* HAVE_GETCWD */ |
0f2d19dd JB |
1062 | |
1063 | \f | |
1064 | ||
28d77376 GH |
1065 | #ifdef HAVE_SELECT |
1066 | ||
1067 | /* check that element is a port or file descriptor. if it's a port | |
1068 | and its buffer is ready for use, add it to the ports_ready list. | |
1069 | otherwise add its file descriptor to *set. the type of list can be | |
1070 | determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes, | |
1071 | SCM_ARG3 for excepts. */ | |
cafc12ff | 1072 | static int |
28d77376 | 1073 | set_element (SELECT_TYPE *set, SCM *ports_ready, SCM element, int pos) |
a48a89bc | 1074 | { |
cafc12ff | 1075 | int fd; |
d831b039 | 1076 | |
e11e83f3 | 1077 | if (scm_is_integer (element)) |
28d77376 | 1078 | { |
e11e83f3 | 1079 | fd = scm_to_int (element); |
28d77376 GH |
1080 | } |
1081 | else | |
1082 | { | |
1083 | int use_buf = 0; | |
1084 | ||
1085 | element = SCM_COERCE_OUTPORT (element); | |
1086 | SCM_ASSERT (SCM_OPFPORTP (element), element, pos, "select"); | |
1087 | if (pos == SCM_ARG1) | |
1088 | { | |
1089 | /* check whether port has buffered input. */ | |
92c2555f | 1090 | scm_t_port *pt = SCM_PTAB_ENTRY (element); |
28d77376 GH |
1091 | |
1092 | if (pt->read_pos < pt->read_end) | |
1093 | use_buf = 1; | |
1094 | } | |
1095 | else if (pos == SCM_ARG2) | |
1096 | { | |
1097 | /* check whether port's output buffer has room. */ | |
92c2555f | 1098 | scm_t_port *pt = SCM_PTAB_ENTRY (element); |
28d77376 GH |
1099 | |
1100 | /* > 1 since writing the last byte in the buffer causes flush. */ | |
1101 | if (pt->write_end - pt->write_pos > 1) | |
1102 | use_buf = 1; | |
1103 | } | |
1104 | fd = use_buf ? -1 : SCM_FPORT_FDES (element); | |
1105 | } | |
1106 | if (fd == -1) | |
1107 | *ports_ready = scm_cons (element, *ports_ready); | |
1108 | else | |
1109 | FD_SET (fd, set); | |
cafc12ff | 1110 | return fd; |
a48a89bc | 1111 | } |
1cc91f1b | 1112 | |
28d77376 GH |
1113 | /* check list_or_vec, a list or vector of ports or file descriptors, |
1114 | adding each member to either the ports_ready list (if it's a port | |
1115 | with a usable buffer) or to *set. the kind of list_or_vec can be | |
1116 | determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes, | |
1117 | SCM_ARG3 for excepts. */ | |
cafc12ff | 1118 | static int |
28d77376 | 1119 | fill_select_type (SELECT_TYPE *set, SCM *ports_ready, SCM list_or_vec, int pos) |
0f2d19dd | 1120 | { |
28d77376 GH |
1121 | int max_fd = 0; |
1122 | ||
4057a3e0 | 1123 | if (scm_is_simple_vector (list_or_vec)) |
0f2d19dd | 1124 | { |
4057a3e0 | 1125 | int i = SCM_SIMPLE_VECTOR_LENGTH (list_or_vec); |
a48a89bc | 1126 | |
28d77376 | 1127 | while (--i >= 0) |
a48a89bc | 1128 | { |
4057a3e0 MV |
1129 | int fd = set_element (set, ports_ready, |
1130 | SCM_SIMPLE_VECTOR_REF (list_or_vec, i), pos); | |
28d77376 | 1131 | |
cafc12ff MD |
1132 | if (fd > max_fd) |
1133 | max_fd = fd; | |
a48a89bc GH |
1134 | } |
1135 | } | |
1136 | else | |
1137 | { | |
c96d76b8 | 1138 | while (!SCM_NULL_OR_NIL_P (list_or_vec)) |
a48a89bc | 1139 | { |
28d77376 GH |
1140 | int fd = set_element (set, ports_ready, SCM_CAR (list_or_vec), pos); |
1141 | ||
cafc12ff MD |
1142 | if (fd > max_fd) |
1143 | max_fd = fd; | |
28d77376 | 1144 | list_or_vec = SCM_CDR (list_or_vec); |
a48a89bc | 1145 | } |
0f2d19dd | 1146 | } |
cafc12ff MD |
1147 | |
1148 | return max_fd; | |
0f2d19dd JB |
1149 | } |
1150 | ||
28d77376 GH |
1151 | /* if element (a file descriptor or port) appears in *set, cons it to |
1152 | list. return list. */ | |
a48a89bc GH |
1153 | static SCM |
1154 | get_element (SELECT_TYPE *set, SCM element, SCM list) | |
1155 | { | |
28d77376 GH |
1156 | int fd; |
1157 | ||
e11e83f3 | 1158 | if (scm_is_integer (element)) |
a48a89bc | 1159 | { |
e11e83f3 | 1160 | fd = scm_to_int (element); |
a48a89bc | 1161 | } |
28d77376 | 1162 | else |
a48a89bc | 1163 | { |
28d77376 | 1164 | fd = SCM_FPORT_FDES (SCM_COERCE_OUTPORT (element)); |
a48a89bc | 1165 | } |
28d77376 GH |
1166 | if (FD_ISSET (fd, set)) |
1167 | list = scm_cons (element, list); | |
a48a89bc GH |
1168 | return list; |
1169 | } | |
1cc91f1b | 1170 | |
28d77376 GH |
1171 | /* construct component of scm_select return value. |
1172 | set: pointer to set of file descriptors found by select to be ready | |
1173 | ports_ready: ports ready due to buffering | |
1174 | list_or_vec: original list/vector handed to scm_select. | |
1175 | the return value is a list/vector of ready ports/file descriptors. | |
1176 | works by finding the objects in list which correspond to members of | |
1177 | *set and appending them to ports_ready. result is converted to a | |
1178 | vector if list_or_vec is a vector. */ | |
0f2d19dd | 1179 | static SCM |
28d77376 | 1180 | retrieve_select_type (SELECT_TYPE *set, SCM ports_ready, SCM list_or_vec) |
0f2d19dd | 1181 | { |
28d77376 | 1182 | SCM answer_list = ports_ready; |
a48a89bc | 1183 | |
4057a3e0 | 1184 | if (scm_is_simple_vector (list_or_vec)) |
0f2d19dd | 1185 | { |
4057a3e0 | 1186 | int i = SCM_SIMPLE_VECTOR_LENGTH (list_or_vec); |
a48a89bc | 1187 | |
28d77376 | 1188 | while (--i >= 0) |
0f2d19dd | 1189 | { |
4057a3e0 MV |
1190 | answer_list = get_element (set, |
1191 | SCM_SIMPLE_VECTOR_REF (list_or_vec, i), | |
1192 | answer_list); | |
0f2d19dd | 1193 | } |
a48a89bc GH |
1194 | return scm_vector (answer_list); |
1195 | } | |
1196 | else | |
1197 | { | |
28d77376 | 1198 | /* list_or_vec must be a list. */ |
c96d76b8 | 1199 | while (!SCM_NULL_OR_NIL_P (list_or_vec)) |
0f2d19dd | 1200 | { |
28d77376 GH |
1201 | answer_list = get_element (set, SCM_CAR (list_or_vec), answer_list); |
1202 | list_or_vec = SCM_CDR (list_or_vec); | |
0f2d19dd | 1203 | } |
a48a89bc | 1204 | return answer_list; |
0f2d19dd | 1205 | } |
0f2d19dd JB |
1206 | } |
1207 | ||
1bbd0b84 | 1208 | /* Static helper functions above refer to s_scm_select directly as s_select */ |
a1ec6916 | 1209 | SCM_DEFINE (scm_select, "select", 3, 2, 0, |
1bbd0b84 | 1210 | (SCM reads, SCM writes, SCM excepts, SCM secs, SCM usecs), |
28d77376 | 1211 | "This procedure has a variety of uses: waiting for the ability\n" |
bb2c02f2 | 1212 | "to provide input, accept output, or the existence of\n" |
28d77376 GH |
1213 | "exceptional conditions on a collection of ports or file\n" |
1214 | "descriptors, or waiting for a timeout to occur.\n" | |
1215 | "It also returns if interrupted by a signal.\n\n" | |
1216 | "@var{reads}, @var{writes} and @var{excepts} can be lists or\n" | |
1217 | "vectors, with each member a port or a file descriptor.\n" | |
1218 | "The value returned is a list of three corresponding\n" | |
1219 | "lists or vectors containing only the members which meet the\n" | |
1220 | "specified requirement. The ability of port buffers to\n" | |
1221 | "provide input or accept output is taken into account.\n" | |
1222 | "Ordering of the input lists or vectors is not preserved.\n\n" | |
1223 | "The optional arguments @var{secs} and @var{usecs} specify the\n" | |
1224 | "timeout. Either @var{secs} can be specified alone, as\n" | |
1225 | "either an integer or a real number, or both @var{secs} and\n" | |
1226 | "@var{usecs} can be specified as integers, in which case\n" | |
1227 | "@var{usecs} is an additional timeout expressed in\n" | |
1228 | "microseconds. If @var{secs} is omitted or is @code{#f} then\n" | |
1229 | "select will wait for as long as it takes for one of the other\n" | |
1230 | "conditions to be satisfied.\n\n" | |
1231 | "The scsh version of @code{select} differs as follows:\n" | |
1232 | "Only vectors are accepted for the first three arguments.\n" | |
1233 | "The @var{usecs} argument is not supported.\n" | |
1234 | "Multiple values are returned instead of a list.\n" | |
1235 | "Duplicates in the input vectors appear only once in output.\n" | |
9401323e | 1236 | "An additional @code{select!} interface is provided.") |
1bbd0b84 | 1237 | #define FUNC_NAME s_scm_select |
0f2d19dd | 1238 | { |
0f2d19dd | 1239 | struct timeval timeout; |
28d77376 | 1240 | struct timeval * time_ptr; |
0f2d19dd JB |
1241 | SELECT_TYPE read_set; |
1242 | SELECT_TYPE write_set; | |
1243 | SELECT_TYPE except_set; | |
28d77376 GH |
1244 | int read_count; |
1245 | int write_count; | |
1246 | int except_count; | |
1247 | /* these lists accumulate ports which are ready due to buffering. | |
1248 | their file descriptors don't need to be added to the select sets. */ | |
1249 | SCM read_ports_ready = SCM_EOL; | |
1250 | SCM write_ports_ready = SCM_EOL; | |
1251 | int max_fd; | |
1252 | ||
4057a3e0 | 1253 | if (scm_is_simple_vector (reads)) |
28d77376 | 1254 | { |
4057a3e0 | 1255 | read_count = SCM_SIMPLE_VECTOR_LENGTH (reads); |
28d77376 GH |
1256 | } |
1257 | else | |
1258 | { | |
1259 | read_count = scm_ilength (reads); | |
1260 | SCM_ASSERT (read_count >= 0, reads, SCM_ARG1, FUNC_NAME); | |
1261 | } | |
4057a3e0 | 1262 | if (scm_is_simple_vector (writes)) |
28d77376 | 1263 | { |
4057a3e0 | 1264 | write_count = SCM_SIMPLE_VECTOR_LENGTH (writes); |
28d77376 GH |
1265 | } |
1266 | else | |
1267 | { | |
1268 | write_count = scm_ilength (writes); | |
1269 | SCM_ASSERT (write_count >= 0, writes, SCM_ARG2, FUNC_NAME); | |
1270 | } | |
4057a3e0 | 1271 | if (scm_is_simple_vector (excepts)) |
28d77376 | 1272 | { |
4057a3e0 | 1273 | except_count = SCM_SIMPLE_VECTOR_LENGTH (excepts); |
28d77376 GH |
1274 | } |
1275 | else | |
1276 | { | |
1277 | except_count = scm_ilength (excepts); | |
1278 | SCM_ASSERT (except_count >= 0, excepts, SCM_ARG3, FUNC_NAME); | |
1279 | } | |
0f2d19dd JB |
1280 | |
1281 | FD_ZERO (&read_set); | |
1282 | FD_ZERO (&write_set); | |
1283 | FD_ZERO (&except_set); | |
1284 | ||
28d77376 GH |
1285 | max_fd = fill_select_type (&read_set, &read_ports_ready, reads, SCM_ARG1); |
1286 | ||
1287 | { | |
1288 | int write_max = fill_select_type (&write_set, &write_ports_ready, | |
1289 | writes, SCM_ARG2); | |
1290 | int except_max = fill_select_type (&except_set, NULL, | |
1291 | excepts, SCM_ARG3); | |
1292 | ||
1293 | if (write_max > max_fd) | |
1294 | max_fd = write_max; | |
1295 | if (except_max > max_fd) | |
1296 | max_fd = except_max; | |
1297 | } | |
0f2d19dd | 1298 | |
ae1b098b GH |
1299 | /* if there's a port with a ready buffer, don't block, just |
1300 | check for ready file descriptors. */ | |
d2e53ed6 | 1301 | if (!scm_is_null (read_ports_ready) || !scm_is_null (write_ports_ready)) |
ae1b098b GH |
1302 | { |
1303 | timeout.tv_sec = 0; | |
1304 | timeout.tv_usec = 0; | |
1305 | time_ptr = &timeout; | |
1306 | } | |
7888309b | 1307 | else if (SCM_UNBNDP (secs) || scm_is_false (secs)) |
28d77376 | 1308 | time_ptr = 0; |
0f2d19dd JB |
1309 | else |
1310 | { | |
a55c2b68 | 1311 | if (scm_is_unsigned_integer (secs, 0, ULONG_MAX)) |
a48a89bc | 1312 | { |
a55c2b68 | 1313 | timeout.tv_sec = scm_to_ulong (secs); |
a48a89bc GH |
1314 | if (SCM_UNBNDP (usecs)) |
1315 | timeout.tv_usec = 0; | |
1316 | else | |
a55c2b68 | 1317 | timeout.tv_usec = scm_to_long (usecs); |
a48a89bc | 1318 | } |
0f2d19dd | 1319 | else |
a48a89bc | 1320 | { |
d9a67fc4 | 1321 | double fl = scm_to_double (secs); |
a48a89bc GH |
1322 | |
1323 | if (!SCM_UNBNDP (usecs)) | |
c1bfcf60 | 1324 | SCM_WRONG_TYPE_ARG (4, secs); |
a48a89bc | 1325 | if (fl > LONG_MAX) |
c1bfcf60 | 1326 | SCM_OUT_OF_RANGE (4, secs); |
a48a89bc GH |
1327 | timeout.tv_sec = (long) fl; |
1328 | timeout.tv_usec = (long) ((fl - timeout.tv_sec) * 1000000); | |
1329 | } | |
28d77376 | 1330 | time_ptr = &timeout; |
0f2d19dd JB |
1331 | } |
1332 | ||
28d77376 | 1333 | { |
9de87eea MV |
1334 | int rv = scm_std_select (max_fd + 1, |
1335 | &read_set, &write_set, &except_set, | |
1336 | time_ptr); | |
28d77376 GH |
1337 | if (rv < 0) |
1338 | SCM_SYSERROR; | |
1339 | } | |
1afff620 KN |
1340 | return scm_list_3 (retrieve_select_type (&read_set, read_ports_ready, reads), |
1341 | retrieve_select_type (&write_set, write_ports_ready, writes), | |
1342 | retrieve_select_type (&except_set, SCM_EOL, excepts)); | |
0f2d19dd | 1343 | } |
1bbd0b84 | 1344 | #undef FUNC_NAME |
f25f761d | 1345 | #endif /* HAVE_SELECT */ |
0f2d19dd JB |
1346 | |
1347 | \f | |
4c1feaa5 | 1348 | |
82893676 | 1349 | #ifdef HAVE_FCNTL |
af45e3b0 | 1350 | SCM_DEFINE (scm_fcntl, "fcntl", 2, 1, 0, |
1bbd0b84 | 1351 | (SCM object, SCM cmd, SCM value), |
d3818c29 MD |
1352 | "Apply @var{command} to the specified file descriptor or the underlying\n" |
1353 | "file descriptor of the specified port. @var{value} is an optional\n" | |
1354 | "integer argument.\n\n" | |
1355 | "Values for @var{command} are:\n\n" | |
1356 | "@table @code\n" | |
1357 | "@item F_DUPFD\n" | |
1358 | "Duplicate a file descriptor\n" | |
1359 | "@item F_GETFD\n" | |
1360 | "Get flags associated with the file descriptor.\n" | |
1361 | "@item F_SETFD\n" | |
1362 | "Set flags associated with the file descriptor to @var{value}.\n" | |
1363 | "@item F_GETFL\n" | |
1364 | "Get flags associated with the open file.\n" | |
1365 | "@item F_SETFL\n" | |
1366 | "Set flags associated with the open file to @var{value}\n" | |
1367 | "@item F_GETOWN\n" | |
1368 | "Get the process ID of a socket's owner, for @code{SIGIO} signals.\n" | |
1369 | "@item F_SETOWN\n" | |
1370 | "Set the process that owns a socket to @var{value}, for @code{SIGIO} signals.\n" | |
1371 | "@item FD_CLOEXEC\n" | |
55892d87 NJ |
1372 | "The value used to indicate the \"close on exec\" flag with @code{F_GETFL} or\n" |
1373 | "@code{F_SETFL}.\n" | |
a3c8b9fc | 1374 | "@end table") |
1bbd0b84 | 1375 | #define FUNC_NAME s_scm_fcntl |
4c1feaa5 JB |
1376 | { |
1377 | int rv; | |
6afcd3b2 GH |
1378 | int fdes; |
1379 | int ivalue; | |
4c1feaa5 | 1380 | |
78446828 MV |
1381 | object = SCM_COERCE_OUTPORT (object); |
1382 | ||
0c95b57d | 1383 | if (SCM_OPFPORTP (object)) |
77a76b64 | 1384 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 | 1385 | else |
a55c2b68 | 1386 | fdes = scm_to_int (object); |
af45e3b0 | 1387 | |
a55c2b68 | 1388 | if (SCM_UNBNDP (value)) |
6afcd3b2 | 1389 | ivalue = 0; |
a55c2b68 MV |
1390 | else |
1391 | ivalue = scm_to_int (value); | |
af45e3b0 | 1392 | |
a55c2b68 | 1393 | SCM_SYSCALL (rv = fcntl (fdes, scm_to_int (cmd), ivalue)); |
77a76b64 | 1394 | if (rv == -1) |
1bbd0b84 | 1395 | SCM_SYSERROR; |
a55c2b68 | 1396 | return scm_from_int (rv); |
4c1feaa5 | 1397 | } |
1bbd0b84 | 1398 | #undef FUNC_NAME |
82893676 | 1399 | #endif /* HAVE_FCNTL */ |
6afcd3b2 | 1400 | |
a1ec6916 | 1401 | SCM_DEFINE (scm_fsync, "fsync", 1, 0, 0, |
1bbd0b84 | 1402 | (SCM object), |
d3818c29 MD |
1403 | "Copies any unwritten data for the specified output file descriptor to disk.\n" |
1404 | "If @var{port/fd} is a port, its buffer is flushed before the underlying\n" | |
1405 | "file descriptor is fsync'd.\n" | |
1406 | "The return value is unspecified.") | |
1bbd0b84 | 1407 | #define FUNC_NAME s_scm_fsync |
6afcd3b2 GH |
1408 | { |
1409 | int fdes; | |
1410 | ||
78446828 MV |
1411 | object = SCM_COERCE_OUTPORT (object); |
1412 | ||
0c95b57d | 1413 | if (SCM_OPFPORTP (object)) |
6afcd3b2 | 1414 | { |
affc96b5 | 1415 | scm_flush (object); |
77a76b64 | 1416 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
1417 | } |
1418 | else | |
a55c2b68 MV |
1419 | fdes = scm_to_int (object); |
1420 | ||
6afcd3b2 | 1421 | if (fsync (fdes) == -1) |
1bbd0b84 | 1422 | SCM_SYSERROR; |
6afcd3b2 GH |
1423 | return SCM_UNSPECIFIED; |
1424 | } | |
1bbd0b84 | 1425 | #undef FUNC_NAME |
0f2d19dd | 1426 | |
f25f761d | 1427 | #ifdef HAVE_SYMLINK |
a1ec6916 | 1428 | SCM_DEFINE (scm_symlink, "symlink", 2, 0, 0, |
1bbd0b84 | 1429 | (SCM oldpath, SCM newpath), |
d3818c29 MD |
1430 | "Create a symbolic link named @var{path-to} with the value (i.e., pointing to)\n" |
1431 | "@var{path-from}. The return value is unspecified.") | |
1bbd0b84 | 1432 | #define FUNC_NAME s_scm_symlink |
0f2d19dd | 1433 | { |
0f2d19dd | 1434 | int val; |
02b754d3 | 1435 | |
1299a0f1 MV |
1436 | STRING2_SYSCALL (oldpath, c_oldpath, |
1437 | newpath, c_newpath, | |
1438 | val = symlink (c_oldpath, c_newpath)); | |
02b754d3 | 1439 | if (val != 0) |
1bbd0b84 | 1440 | SCM_SYSERROR; |
02b754d3 | 1441 | return SCM_UNSPECIFIED; |
0f2d19dd | 1442 | } |
1bbd0b84 | 1443 | #undef FUNC_NAME |
f25f761d | 1444 | #endif /* HAVE_SYMLINK */ |
0f2d19dd | 1445 | |
f25f761d | 1446 | #ifdef HAVE_READLINK |
a1ec6916 | 1447 | SCM_DEFINE (scm_readlink, "readlink", 1, 0, 0, |
1bbd0b84 | 1448 | (SCM path), |
1e6808ea MG |
1449 | "Return the value of the symbolic link named by @var{path} (a\n" |
1450 | "string), i.e., the file that the link points to.") | |
1bbd0b84 | 1451 | #define FUNC_NAME s_scm_readlink |
0f2d19dd | 1452 | { |
6a738a25 JB |
1453 | int rv; |
1454 | int size = 100; | |
0f2d19dd JB |
1455 | char *buf; |
1456 | SCM result; | |
1299a0f1 MV |
1457 | char *c_path; |
1458 | ||
661ae7ab | 1459 | scm_dynwind_begin (0); |
1299a0f1 MV |
1460 | |
1461 | c_path = scm_to_locale_string (path); | |
661ae7ab | 1462 | scm_dynwind_free (c_path); |
1299a0f1 | 1463 | |
4c9419ac | 1464 | buf = scm_malloc (size); |
1299a0f1 MV |
1465 | |
1466 | while ((rv = readlink (c_path, buf, size)) == size) | |
0f2d19dd | 1467 | { |
4c9419ac | 1468 | free (buf); |
0f2d19dd | 1469 | size *= 2; |
4c9419ac | 1470 | buf = scm_malloc (size); |
0f2d19dd | 1471 | } |
02b754d3 | 1472 | if (rv == -1) |
11e1db06 KR |
1473 | { |
1474 | int save_errno = errno; | |
1475 | free (buf); | |
1476 | errno = save_errno; | |
1477 | SCM_SYSERROR; | |
1478 | } | |
1299a0f1 MV |
1479 | result = scm_take_locale_stringn (buf, rv); |
1480 | ||
661ae7ab | 1481 | scm_dynwind_end (); |
0f2d19dd | 1482 | return result; |
0f2d19dd | 1483 | } |
1bbd0b84 | 1484 | #undef FUNC_NAME |
f25f761d | 1485 | #endif /* HAVE_READLINK */ |
0f2d19dd | 1486 | |
f25f761d | 1487 | #ifdef HAVE_LSTAT |
a1ec6916 | 1488 | SCM_DEFINE (scm_lstat, "lstat", 1, 0, 0, |
1bbd0b84 | 1489 | (SCM str), |
d3818c29 | 1490 | "Similar to @code{stat}, but does not follow symbolic links, i.e.,\n" |
9401323e | 1491 | "it will return information about a symbolic link itself, not the\n" |
d3818c29 | 1492 | "file it points to. @var{path} must be a string.") |
1bbd0b84 | 1493 | #define FUNC_NAME s_scm_lstat |
0f2d19dd | 1494 | { |
02b754d3 | 1495 | int rv; |
2b829bbb | 1496 | struct stat_or_stat64 stat_temp; |
02b754d3 | 1497 | |
2b829bbb | 1498 | STRING_SYSCALL (str, c_str, rv = lstat_or_lstat64 (c_str, &stat_temp)); |
02b754d3 | 1499 | if (rv != 0) |
3d8d56df GH |
1500 | { |
1501 | int en = errno; | |
1502 | ||
5d2d2ffc | 1503 | SCM_SYSERROR_MSG ("~A: ~S", |
3572cd6b | 1504 | scm_list_2 (scm_strerror (scm_from_int (en)), str), |
e0c08f17 | 1505 | en); |
3d8d56df | 1506 | } |
1299a0f1 | 1507 | return scm_stat2scm (&stat_temp); |
0f2d19dd | 1508 | } |
1bbd0b84 | 1509 | #undef FUNC_NAME |
f25f761d | 1510 | #endif /* HAVE_LSTAT */ |
0f2d19dd | 1511 | |
a1ec6916 | 1512 | SCM_DEFINE (scm_copy_file, "copy-file", 2, 0, 0, |
1bbd0b84 | 1513 | (SCM oldfile, SCM newfile), |
d3818c29 MD |
1514 | "Copy the file specified by @var{path-from} to @var{path-to}.\n" |
1515 | "The return value is unspecified.") | |
1bbd0b84 | 1516 | #define FUNC_NAME s_scm_copy_file |
0f2d19dd | 1517 | { |
1299a0f1 | 1518 | char *c_oldfile, *c_newfile; |
0f2d19dd | 1519 | int oldfd, newfd; |
37eb673b | 1520 | int n, rv; |
77a76b64 | 1521 | char buf[BUFSIZ]; |
2b829bbb | 1522 | struct stat_or_stat64 oldstat; |
0f2d19dd | 1523 | |
661ae7ab | 1524 | scm_dynwind_begin (0); |
1299a0f1 MV |
1525 | |
1526 | c_oldfile = scm_to_locale_string (oldfile); | |
661ae7ab | 1527 | scm_dynwind_free (c_oldfile); |
1299a0f1 | 1528 | c_newfile = scm_to_locale_string (newfile); |
661ae7ab | 1529 | scm_dynwind_free (c_newfile); |
37eb673b | 1530 | |
2b829bbb | 1531 | oldfd = open_or_open64 (c_oldfile, O_RDONLY); |
0f2d19dd | 1532 | if (oldfd == -1) |
1bbd0b84 | 1533 | SCM_SYSERROR; |
02b754d3 | 1534 | |
37eb673b KR |
1535 | #ifdef __MINGW32__ |
1536 | SCM_SYSCALL (rv = fstat_Win32 (oldfd, &oldstat)); | |
1537 | #else | |
2b829bbb | 1538 | SCM_SYSCALL (rv = fstat_or_fstat64 (oldfd, &oldstat)); |
37eb673b KR |
1539 | #endif |
1540 | if (rv == -1) | |
1541 | goto err_close_oldfd; | |
1542 | ||
02b754d3 | 1543 | /* use POSIX flags instead of 07777?. */ |
2b829bbb KR |
1544 | newfd = open_or_open64 (c_newfile, O_WRONLY | O_CREAT | O_TRUNC, |
1545 | oldstat.st_mode & 07777); | |
0f2d19dd | 1546 | if (newfd == -1) |
01046395 | 1547 | { |
37eb673b | 1548 | err_close_oldfd: |
01046395 KR |
1549 | close (oldfd); |
1550 | SCM_SYSERROR; | |
1551 | } | |
02b754d3 | 1552 | |
0f2d19dd JB |
1553 | while ((n = read (oldfd, buf, sizeof buf)) > 0) |
1554 | if (write (newfd, buf, n) != n) | |
1555 | { | |
1556 | close (oldfd); | |
1557 | close (newfd); | |
1bbd0b84 | 1558 | SCM_SYSERROR; |
0f2d19dd JB |
1559 | } |
1560 | close (oldfd); | |
1561 | if (close (newfd) == -1) | |
1bbd0b84 | 1562 | SCM_SYSERROR; |
1299a0f1 | 1563 | |
661ae7ab | 1564 | scm_dynwind_end (); |
02b754d3 | 1565 | return SCM_UNSPECIFIED; |
0f2d19dd | 1566 | } |
1bbd0b84 | 1567 | #undef FUNC_NAME |
0f2d19dd JB |
1568 | |
1569 | \f | |
6a738a25 JB |
1570 | /* Filename manipulation */ |
1571 | ||
1572 | SCM scm_dot_string; | |
1573 | ||
a1ec6916 | 1574 | SCM_DEFINE (scm_dirname, "dirname", 1, 0, 0, |
1bbd0b84 | 1575 | (SCM filename), |
fa6a543f MG |
1576 | "Return the directory name component of the file name\n" |
1577 | "@var{filename}. If @var{filename} does not contain a directory\n" | |
1578 | "component, @code{.} is returned.") | |
1bbd0b84 | 1579 | #define FUNC_NAME s_scm_dirname |
6a738a25 | 1580 | { |
cc95e00a | 1581 | const char *s; |
9fd38a3d DH |
1582 | long int i; |
1583 | unsigned long int len; | |
1584 | ||
34d19ef6 | 1585 | SCM_VALIDATE_STRING (1, filename); |
9fd38a3d | 1586 | |
cc95e00a MV |
1587 | s = scm_i_string_chars (filename); |
1588 | len = scm_i_string_length (filename); | |
9fd38a3d | 1589 | |
6a738a25 | 1590 | i = len - 1; |
82893676 MG |
1591 | #ifdef __MINGW32__ |
1592 | while (i >= 0 && (s[i] == '/' || s[i] == '\\')) --i; | |
e0c73a1c | 1593 | while (i >= 0 && (s[i] != '/' && s[i] != '\\')) --i; |
82893676 MG |
1594 | while (i >= 0 && (s[i] == '/' || s[i] == '\\')) --i; |
1595 | #else | |
6a738a25 JB |
1596 | while (i >= 0 && s[i] == '/') --i; |
1597 | while (i >= 0 && s[i] != '/') --i; | |
1598 | while (i >= 0 && s[i] == '/') --i; | |
82893676 | 1599 | #endif /* ndef __MINGW32__ */ |
6a738a25 JB |
1600 | if (i < 0) |
1601 | { | |
82893676 MG |
1602 | #ifdef __MINGW32__ |
1603 | if (len > 0 && (s[0] == '/' || s[0] == '\\')) | |
1604 | #else | |
6a738a25 | 1605 | if (len > 0 && s[0] == '/') |
82893676 | 1606 | #endif /* ndef __MINGW32__ */ |
cc95e00a | 1607 | return scm_c_substring (filename, 0, 1); |
6a738a25 JB |
1608 | else |
1609 | return scm_dot_string; | |
1610 | } | |
1611 | else | |
cc95e00a | 1612 | return scm_c_substring (filename, 0, i + 1); |
6a738a25 | 1613 | } |
1bbd0b84 | 1614 | #undef FUNC_NAME |
6a738a25 | 1615 | |
a1ec6916 | 1616 | SCM_DEFINE (scm_basename, "basename", 1, 1, 0, |
1bbd0b84 | 1617 | (SCM filename, SCM suffix), |
fa6a543f MG |
1618 | "Return the base name of the file name @var{filename}. The\n" |
1619 | "base name is the file name without any directory components.\n" | |
bb2c02f2 | 1620 | "If @var{suffix} is provided, and is equal to the end of\n" |
fa6a543f | 1621 | "@var{basename}, it is removed also.") |
1bbd0b84 | 1622 | #define FUNC_NAME s_scm_basename |
6a738a25 | 1623 | { |
cc95e00a | 1624 | const char *f, *s = 0; |
6a738a25 | 1625 | int i, j, len, end; |
9fd38a3d | 1626 | |
34d19ef6 | 1627 | SCM_VALIDATE_STRING (1, filename); |
cc95e00a MV |
1628 | f = scm_i_string_chars (filename); |
1629 | len = scm_i_string_length (filename); | |
9fd38a3d | 1630 | |
6a738a25 JB |
1631 | if (SCM_UNBNDP (suffix)) |
1632 | j = -1; | |
1633 | else | |
1634 | { | |
9fd38a3d | 1635 | SCM_VALIDATE_STRING (2, suffix); |
cc95e00a MV |
1636 | s = scm_i_string_chars (suffix); |
1637 | j = scm_i_string_length (suffix) - 1; | |
6a738a25 | 1638 | } |
6a738a25 | 1639 | i = len - 1; |
82893676 MG |
1640 | #ifdef __MINGW32__ |
1641 | while (i >= 0 && (f[i] == '/' || f[i] == '\\')) --i; | |
1642 | #else | |
6a738a25 | 1643 | while (i >= 0 && f[i] == '/') --i; |
82893676 | 1644 | #endif /* ndef __MINGW32__ */ |
6a738a25 JB |
1645 | end = i; |
1646 | while (i >= 0 && j >= 0 && f[i] == s[j]) --i, --j; | |
1647 | if (j == -1) | |
1648 | end = i; | |
82893676 | 1649 | #ifdef __MINGW32__ |
2e945bcc | 1650 | while (i >= 0 && f[i] != '/' && f[i] != '\\') --i; |
82893676 | 1651 | #else |
6a738a25 | 1652 | while (i >= 0 && f[i] != '/') --i; |
82893676 | 1653 | #endif /* ndef __MINGW32__ */ |
6a738a25 JB |
1654 | if (i == end) |
1655 | { | |
82893676 | 1656 | #ifdef __MINGW32__ |
2e945bcc | 1657 | if (len > 0 && (f[0] == '/' || f[0] == '\\')) |
82893676 | 1658 | #else |
6a738a25 | 1659 | if (len > 0 && f[0] == '/') |
82893676 | 1660 | #endif /* ndef __MINGW32__ */ |
cc95e00a | 1661 | return scm_c_substring (filename, 0, 1); |
6a738a25 JB |
1662 | else |
1663 | return scm_dot_string; | |
1664 | } | |
1665 | else | |
cc95e00a | 1666 | return scm_c_substring (filename, i+1, end+1); |
6a738a25 | 1667 | } |
1bbd0b84 | 1668 | #undef FUNC_NAME |
6a738a25 JB |
1669 | |
1670 | ||
1671 | ||
1672 | \f | |
1cc91f1b | 1673 | |
0f2d19dd JB |
1674 | void |
1675 | scm_init_filesys () | |
0f2d19dd | 1676 | { |
e841c3e0 KN |
1677 | scm_tc16_dir = scm_make_smob_type ("directory", 0); |
1678 | scm_set_smob_free (scm_tc16_dir, scm_dir_free); | |
1679 | scm_set_smob_print (scm_tc16_dir, scm_dir_print); | |
0f2d19dd | 1680 | |
cc95e00a | 1681 | scm_dot_string = scm_permanent_object (scm_from_locale_string (".")); |
a163dda9 | 1682 | |
3d8d56df | 1683 | #ifdef O_RDONLY |
b9bd8526 | 1684 | scm_c_define ("O_RDONLY", scm_from_long (O_RDONLY)); |
3d8d56df GH |
1685 | #endif |
1686 | #ifdef O_WRONLY | |
b9bd8526 | 1687 | scm_c_define ("O_WRONLY", scm_from_long (O_WRONLY)); |
3d8d56df GH |
1688 | #endif |
1689 | #ifdef O_RDWR | |
b9bd8526 | 1690 | scm_c_define ("O_RDWR", scm_from_long (O_RDWR)); |
3d8d56df GH |
1691 | #endif |
1692 | #ifdef O_CREAT | |
b9bd8526 | 1693 | scm_c_define ("O_CREAT", scm_from_long (O_CREAT)); |
3d8d56df GH |
1694 | #endif |
1695 | #ifdef O_EXCL | |
b9bd8526 | 1696 | scm_c_define ("O_EXCL", scm_from_long (O_EXCL)); |
3d8d56df GH |
1697 | #endif |
1698 | #ifdef O_NOCTTY | |
b9bd8526 | 1699 | scm_c_define ("O_NOCTTY", scm_from_long (O_NOCTTY)); |
3d8d56df GH |
1700 | #endif |
1701 | #ifdef O_TRUNC | |
b9bd8526 | 1702 | scm_c_define ("O_TRUNC", scm_from_long (O_TRUNC)); |
3d8d56df GH |
1703 | #endif |
1704 | #ifdef O_APPEND | |
b9bd8526 | 1705 | scm_c_define ("O_APPEND", scm_from_long (O_APPEND)); |
3d8d56df | 1706 | #endif |
6afcd3b2 | 1707 | #ifdef O_NONBLOCK |
b9bd8526 | 1708 | scm_c_define ("O_NONBLOCK", scm_from_long (O_NONBLOCK)); |
3d8d56df GH |
1709 | #endif |
1710 | #ifdef O_NDELAY | |
b9bd8526 | 1711 | scm_c_define ("O_NDELAY", scm_from_long (O_NDELAY)); |
3d8d56df GH |
1712 | #endif |
1713 | #ifdef O_SYNC | |
b9bd8526 | 1714 | scm_c_define ("O_SYNC", scm_from_long (O_SYNC)); |
3d8d56df | 1715 | #endif |
23f2b9a3 KR |
1716 | #ifdef O_LARGEFILE |
1717 | scm_c_define ("O_LARGEFILE", scm_from_long (O_LARGEFILE)); | |
1718 | #endif | |
3d8d56df | 1719 | |
4c1feaa5 | 1720 | #ifdef F_DUPFD |
b9bd8526 | 1721 | scm_c_define ("F_DUPFD", scm_from_long (F_DUPFD)); |
4c1feaa5 JB |
1722 | #endif |
1723 | #ifdef F_GETFD | |
b9bd8526 | 1724 | scm_c_define ("F_GETFD", scm_from_long (F_GETFD)); |
4c1feaa5 JB |
1725 | #endif |
1726 | #ifdef F_SETFD | |
b9bd8526 | 1727 | scm_c_define ("F_SETFD", scm_from_long (F_SETFD)); |
4c1feaa5 JB |
1728 | #endif |
1729 | #ifdef F_GETFL | |
b9bd8526 | 1730 | scm_c_define ("F_GETFL", scm_from_long (F_GETFL)); |
4c1feaa5 JB |
1731 | #endif |
1732 | #ifdef F_SETFL | |
b9bd8526 | 1733 | scm_c_define ("F_SETFL", scm_from_long (F_SETFL)); |
4c1feaa5 JB |
1734 | #endif |
1735 | #ifdef F_GETOWN | |
b9bd8526 | 1736 | scm_c_define ("F_GETOWN", scm_from_long (F_GETOWN)); |
4c1feaa5 JB |
1737 | #endif |
1738 | #ifdef F_SETOWN | |
b9bd8526 | 1739 | scm_c_define ("F_SETOWN", scm_from_long (F_SETOWN)); |
4c1feaa5 JB |
1740 | #endif |
1741 | #ifdef FD_CLOEXEC | |
b9bd8526 | 1742 | scm_c_define ("FD_CLOEXEC", scm_from_long (FD_CLOEXEC)); |
bd9e24b3 | 1743 | #endif |
3d8d56df | 1744 | |
a0599745 | 1745 | #include "libguile/filesys.x" |
0f2d19dd | 1746 | } |
89e00824 ML |
1747 | |
1748 | /* | |
1749 | Local Variables: | |
1750 | c-file-style: "gnu" | |
1751 | End: | |
1752 | */ |