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. */ | |
2b829bbb | 22 | #define _LARGEFILE64_SOURCE /* ask for stat64 etc */ |
464ee095 KR |
23 | #ifdef __hpux |
24 | #define _POSIX_C_SOURCE 199506L /* for readdir_r */ | |
edea856c | 25 | #endif |
6d484a0b | 26 | |
dbb605f5 | 27 | #ifdef HAVE_CONFIG_H |
83079454 RB |
28 | # include <config.h> |
29 | #endif | |
30 | ||
f7439099 | 31 | #include <alloca.h> |
2b829bbb | 32 | |
3d8d56df | 33 | #include <stdio.h> |
e6e2e95a MD |
34 | #include <errno.h> |
35 | ||
a0599745 MD |
36 | #include "libguile/_scm.h" |
37 | #include "libguile/smob.h" | |
38 | #include "libguile/feature.h" | |
39 | #include "libguile/fports.h" | |
2b829bbb | 40 | #include "libguile/private-gc.h" /* for SCM_MAX */ |
a0599745 MD |
41 | #include "libguile/iselect.h" |
42 | #include "libguile/strings.h" | |
43 | #include "libguile/vectors.h" | |
c96d76b8 | 44 | #include "libguile/lang.h" |
1299a0f1 | 45 | #include "libguile/dynwind.h" |
0f2d19dd | 46 | |
a0599745 MD |
47 | #include "libguile/validate.h" |
48 | #include "libguile/filesys.h" | |
def804a3 | 49 | |
0f2d19dd | 50 | \f |
def804a3 JB |
51 | #ifdef HAVE_IO_H |
52 | #include <io.h> | |
53 | #endif | |
54 | ||
e0c73a1c MV |
55 | #ifdef HAVE_DIRECT_H |
56 | #include <direct.h> | |
57 | #endif | |
58 | ||
0f2d19dd JB |
59 | #ifdef TIME_WITH_SYS_TIME |
60 | # include <sys/time.h> | |
61 | # include <time.h> | |
62 | #else | |
63 | # if HAVE_SYS_TIME_H | |
64 | # include <sys/time.h> | |
65 | # else | |
66 | # include <time.h> | |
67 | # endif | |
68 | #endif | |
69 | ||
70 | #ifdef HAVE_UNISTD_H | |
71 | #include <unistd.h> | |
72 | #endif | |
73 | ||
3594582b | 74 | #ifdef LIBC_H_WITH_UNISTD_H |
1f9e2226 JB |
75 | #include <libc.h> |
76 | #endif | |
77 | ||
0f2d19dd JB |
78 | #ifdef HAVE_SYS_SELECT_H |
79 | #include <sys/select.h> | |
80 | #endif | |
81 | ||
1f9e2226 JB |
82 | #ifdef HAVE_STRING_H |
83 | #include <string.h> | |
84 | #endif | |
85 | ||
8cc71382 | 86 | #include <sys/types.h> |
0f2d19dd JB |
87 | #include <sys/stat.h> |
88 | #include <fcntl.h> | |
89 | ||
82893676 | 90 | #ifdef HAVE_PWD_H |
0f2d19dd | 91 | #include <pwd.h> |
82893676 | 92 | #endif |
0f2d19dd JB |
93 | |
94 | ||
e0c73a1c MV |
95 | #if defined (__MINGW32__) || defined (_MSC_VER) || defined (__BORLANDC__) |
96 | # include "win32-dirent.h" | |
97 | # define NAMLEN(dirent) strlen((dirent)->d_name) | |
2b829bbb | 98 | /* The following bits are per AC_HEADER_DIRENT doco in the autoconf manual */ |
e0c73a1c | 99 | #elif HAVE_DIRENT_H |
0f2d19dd JB |
100 | # include <dirent.h> |
101 | # define NAMLEN(dirent) strlen((dirent)->d_name) | |
102 | #else | |
103 | # define dirent direct | |
104 | # define NAMLEN(dirent) (dirent)->d_namlen | |
105 | # if HAVE_SYS_NDIR_H | |
106 | # include <sys/ndir.h> | |
107 | # endif | |
108 | # if HAVE_SYS_DIR_H | |
109 | # include <sys/dir.h> | |
110 | # endif | |
111 | # if HAVE_NDIR_H | |
112 | # include <ndir.h> | |
113 | # endif | |
114 | #endif | |
115 | ||
d7b8a21a JB |
116 | /* Ultrix has S_IFSOCK, but no S_ISSOCK. Ipe! */ |
117 | #if defined (S_IFSOCK) && ! defined (S_ISSOCK) | |
118 | #define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) | |
119 | #endif | |
82893676 MG |
120 | |
121 | /* The MinGW gcc does not define the S_ISSOCK macro. Any other native Windows | |
122 | compiler like BorlandC or MSVC has none of these macros defined. */ | |
123 | #ifdef __MINGW32__ | |
8f99e3f3 SJ |
124 | |
125 | # ifdef _S_IFIFO | |
126 | # undef _S_IFIFO | |
127 | # endif | |
128 | # ifdef _S_IFCHR | |
129 | # undef _S_IFCHR | |
130 | # endif | |
131 | # ifdef _S_IFBLK | |
132 | # undef _S_IFBLK | |
133 | # endif | |
134 | # ifdef _S_IFDIR | |
135 | # undef _S_IFDIR | |
136 | # endif | |
137 | # ifdef _S_IFREG | |
138 | # undef _S_IFREG | |
139 | # endif | |
140 | # ifdef _S_IFSOCK | |
141 | # undef _S_IFSOCK | |
142 | # endif | |
143 | ||
144 | # define _S_IFIFO 0x1000 /* FIFO */ | |
145 | # define _S_IFCHR 0x2000 /* Character */ | |
146 | # define _S_IFBLK 0x3000 /* Block */ | |
147 | # define _S_IFDIR 0x4000 /* Directory */ | |
148 | # define _S_IFREG 0x8000 /* Regular */ | |
149 | # define _S_IFSOCK 0xC000 /* Socket */ | |
150 | ||
151 | # ifdef S_ISBLK | |
152 | # undef S_ISBLK | |
153 | # endif | |
154 | # ifdef S_ISFIFO | |
155 | # undef S_ISFIFO | |
156 | # endif | |
157 | # ifdef S_ISCHR | |
158 | # undef S_ISCHR | |
159 | # endif | |
160 | # ifdef S_ISDIR | |
161 | # undef S_ISDIR | |
162 | # endif | |
163 | # ifdef S_ISREG | |
164 | # undef S_ISREG | |
165 | # endif | |
166 | # ifdef S_ISSOCK | |
167 | # undef S_ISSOCK | |
168 | # endif | |
169 | ||
170 | # define S_ISBLK(mode) (((mode) & _S_IFMT) == _S_IFBLK) | |
82893676 | 171 | # define S_ISFIFO(mode) (((mode) & _S_IFMT) == _S_IFIFO) |
8f99e3f3 SJ |
172 | # define S_ISCHR(mode) (((mode) & _S_IFMT) == _S_IFCHR) |
173 | # define S_ISDIR(mode) (((mode) & _S_IFMT) == _S_IFDIR) | |
174 | # define S_ISREG(mode) (((mode) & _S_IFMT) == _S_IFREG) | |
175 | # define S_ISSOCK(mode) (((mode) & _S_IFMT) == _S_IFSOCK) | |
176 | ||
177 | #endif /* __MINGW32__ */ | |
82893676 MG |
178 | |
179 | /* Some more definitions for the native Windows port. */ | |
180 | #ifdef __MINGW32__ | |
181 | # define mkdir(path, mode) mkdir (path) | |
182 | # define fsync(fd) _commit (fd) | |
183 | # define fchmod(fd, mode) (-1) | |
184 | #endif /* __MINGW32__ */ | |
2b829bbb | 185 | |
8ab3d8a0 KR |
186 | /* dirfd() returns the file descriptor underlying a "DIR*" directory stream. |
187 | Found on MacOS X for instance. The following definition is for Solaris | |
188 | 10, it's probably not right elsewhere, but that's ok, it shouldn't be | |
189 | used elsewhere. Crib note: If we need more then gnulib has a dirfd.m4 | |
190 | figuring out how to get the fd (dirfd function, dirfd macro, dd_fd field, | |
191 | or d_fd field). */ | |
192 | #ifndef dirfd | |
193 | #define dirfd(dirstream) ((dirstream)->dd_fd) | |
2b829bbb KR |
194 | #endif |
195 | ||
0f2d19dd JB |
196 | \f |
197 | ||
1299a0f1 MV |
198 | /* Two helper macros for an often used pattern */ |
199 | ||
200 | #define STRING_SYSCALL(str,cstr,code) \ | |
201 | do { \ | |
202 | int eno; \ | |
203 | char *cstr = scm_to_locale_string (str); \ | |
204 | SCM_SYSCALL (code); \ | |
205 | eno = errno; free (cstr); errno = eno; \ | |
206 | } while (0) | |
207 | ||
208 | #define STRING2_SYSCALL(str1,cstr1,str2,cstr2,code) \ | |
209 | do { \ | |
210 | int eno; \ | |
211 | char *cstr1, *cstr2; \ | |
661ae7ab | 212 | scm_dynwind_begin (0); \ |
1299a0f1 | 213 | cstr1 = scm_to_locale_string (str1); \ |
661ae7ab | 214 | scm_dynwind_free (cstr1); \ |
1299a0f1 | 215 | cstr2 = scm_to_locale_string (str2); \ |
661ae7ab | 216 | scm_dynwind_free (cstr2); \ |
1299a0f1 | 217 | SCM_SYSCALL (code); \ |
661ae7ab | 218 | eno = errno; scm_dynwind_end (); errno = eno; \ |
1299a0f1 | 219 | } while (0) |
0f2d19dd JB |
220 | |
221 | \f | |
222 | ||
223 | /* {Permissions} | |
224 | */ | |
225 | ||
82893676 | 226 | #ifdef HAVE_CHOWN |
a1ec6916 | 227 | SCM_DEFINE (scm_chown, "chown", 3, 0, 0, |
1bbd0b84 | 228 | (SCM object, SCM owner, SCM group), |
d831b039 GH |
229 | "Change the ownership and group of the file referred to by @var{object} to\n" |
230 | "the integer values @var{owner} and @var{group}. @var{object} can be\n" | |
231 | "a string containing a file name or, if the platform\n" | |
232 | "supports fchown, a port or integer file descriptor\n" | |
233 | "which is open on the file. The return value\n" | |
d3818c29 | 234 | "is unspecified.\n\n" |
d831b039 | 235 | "If @var{object} is a symbolic link, either the\n" |
d3818c29 MD |
236 | "ownership of the link or the ownership of the referenced file will be\n" |
237 | "changed depending on the operating system (lchown is\n" | |
238 | "unsupported at present). If @var{owner} or @var{group} is specified\n" | |
239 | "as @code{-1}, then that ID is not changed.") | |
1bbd0b84 | 240 | #define FUNC_NAME s_scm_chown |
0f2d19dd | 241 | { |
6afcd3b2 | 242 | int rv; |
02b754d3 | 243 | |
78446828 MV |
244 | object = SCM_COERCE_OUTPORT (object); |
245 | ||
d831b039 | 246 | #ifdef HAVE_FCHOWN |
a55c2b68 | 247 | if (scm_is_integer (object) || (SCM_OPFPORTP (object))) |
6afcd3b2 | 248 | { |
a55c2b68 MV |
249 | int fdes = (SCM_OPFPORTP (object)? |
250 | SCM_FPORT_FDES (object) : scm_to_int (object)); | |
d831b039 | 251 | |
a55c2b68 | 252 | SCM_SYSCALL (rv = fchown (fdes, scm_to_int (owner), scm_to_int (group))); |
6afcd3b2 GH |
253 | } |
254 | else | |
d831b039 | 255 | #endif |
6afcd3b2 | 256 | { |
1299a0f1 MV |
257 | STRING_SYSCALL (object, c_object, |
258 | rv = chown (c_object, | |
259 | scm_to_int (owner), scm_to_int (group))); | |
6afcd3b2 GH |
260 | } |
261 | if (rv == -1) | |
1bbd0b84 | 262 | SCM_SYSERROR; |
02b754d3 | 263 | return SCM_UNSPECIFIED; |
0f2d19dd | 264 | } |
1bbd0b84 | 265 | #undef FUNC_NAME |
82893676 | 266 | #endif /* HAVE_CHOWN */ |
0f2d19dd JB |
267 | |
268 | ||
a1ec6916 | 269 | SCM_DEFINE (scm_chmod, "chmod", 2, 0, 0, |
1bbd0b84 | 270 | (SCM object, SCM mode), |
d3818c29 MD |
271 | "Changes the permissions of the file referred to by @var{obj}.\n" |
272 | "@var{obj} can be a string containing a file name or a port or integer file\n" | |
273 | "descriptor which is open on a file (in which case @code{fchmod} is used\n" | |
274 | "as the underlying system call).\n" | |
275 | "@var{mode} specifies\n" | |
276 | "the new permissions as a decimal number, e.g., @code{(chmod \"foo\" #o755)}.\n" | |
277 | "The return value is unspecified.") | |
1bbd0b84 | 278 | #define FUNC_NAME s_scm_chmod |
0f2d19dd JB |
279 | { |
280 | int rv; | |
6afcd3b2 GH |
281 | int fdes; |
282 | ||
78446828 MV |
283 | object = SCM_COERCE_OUTPORT (object); |
284 | ||
a55c2b68 | 285 | if (scm_is_integer (object) || SCM_OPFPORTP (object)) |
89958ad0 | 286 | { |
a55c2b68 MV |
287 | if (scm_is_integer (object)) |
288 | fdes = scm_to_int (object); | |
6afcd3b2 | 289 | else |
77a76b64 | 290 | fdes = SCM_FPORT_FDES (object); |
a55c2b68 | 291 | SCM_SYSCALL (rv = fchmod (fdes, scm_to_int (mode))); |
89958ad0 | 292 | } |
0f2d19dd JB |
293 | else |
294 | { | |
1299a0f1 MV |
295 | STRING_SYSCALL (object, c_object, |
296 | rv = chmod (c_object, scm_to_int (mode))); | |
0f2d19dd | 297 | } |
6afcd3b2 | 298 | if (rv == -1) |
1bbd0b84 | 299 | SCM_SYSERROR; |
02b754d3 | 300 | return SCM_UNSPECIFIED; |
0f2d19dd | 301 | } |
1bbd0b84 | 302 | #undef FUNC_NAME |
0f2d19dd | 303 | |
a1ec6916 | 304 | SCM_DEFINE (scm_umask, "umask", 0, 1, 0, |
1bbd0b84 | 305 | (SCM mode), |
bb2c02f2 | 306 | "If @var{mode} is omitted, returns a decimal number representing the current\n" |
d3818c29 MD |
307 | "file creation mask. Otherwise the file creation mask is set to\n" |
308 | "@var{mode} and the previous value is returned.\n\n" | |
309 | "E.g., @code{(umask #o022)} sets the mask to octal 22, decimal 18.") | |
1bbd0b84 | 310 | #define FUNC_NAME s_scm_umask |
0f2d19dd JB |
311 | { |
312 | mode_t mask; | |
313 | if (SCM_UNBNDP (mode)) | |
314 | { | |
315 | mask = umask (0); | |
316 | umask (mask); | |
317 | } | |
318 | else | |
319 | { | |
a55c2b68 | 320 | mask = umask (scm_to_uint (mode)); |
0f2d19dd | 321 | } |
a55c2b68 | 322 | return scm_from_uint (mask); |
0f2d19dd | 323 | } |
1bbd0b84 | 324 | #undef FUNC_NAME |
0f2d19dd JB |
325 | |
326 | \f | |
0f2d19dd | 327 | |
a1ec6916 | 328 | SCM_DEFINE (scm_open_fdes, "open-fdes", 2, 1, 0, |
1bbd0b84 | 329 | (SCM path, SCM flags, SCM mode), |
1e6808ea MG |
330 | "Similar to @code{open} but return a file descriptor instead of\n" |
331 | "a port.") | |
1bbd0b84 | 332 | #define FUNC_NAME s_scm_open_fdes |
0f2d19dd JB |
333 | { |
334 | int fd; | |
3d8d56df | 335 | int iflags; |
6afcd3b2 | 336 | int imode; |
0f2d19dd | 337 | |
1be6b49c ML |
338 | iflags = SCM_NUM2INT (2, flags); |
339 | imode = SCM_NUM2INT_DEF (3, mode, 0666); | |
23f2b9a3 | 340 | STRING_SYSCALL (path, c_path, fd = open_or_open64 (c_path, iflags, imode)); |
3d8d56df | 341 | if (fd == -1) |
1bbd0b84 | 342 | SCM_SYSERROR; |
e11e83f3 | 343 | return scm_from_int (fd); |
6afcd3b2 | 344 | } |
1bbd0b84 | 345 | #undef FUNC_NAME |
6afcd3b2 | 346 | |
a1ec6916 | 347 | SCM_DEFINE (scm_open, "open", 2, 1, 0, |
1bbd0b84 | 348 | (SCM path, SCM flags, SCM mode), |
d3818c29 MD |
349 | "Open the file named by @var{path} for reading and/or writing.\n" |
350 | "@var{flags} is an integer specifying how the file should be opened.\n" | |
351 | "@var{mode} is an integer specifying the permission bits of the file, if\n" | |
352 | "it needs to be created, before the umask is applied. The default is 666\n" | |
353 | "(Unix itself has no default).\n\n" | |
354 | "@var{flags} can be constructed by combining variables using @code{logior}.\n" | |
355 | "Basic flags are:\n\n" | |
356 | "@defvar O_RDONLY\n" | |
357 | "Open the file read-only.\n" | |
358 | "@end defvar\n" | |
359 | "@defvar O_WRONLY\n" | |
9401323e | 360 | "Open the file write-only.\n" |
d3818c29 MD |
361 | "@end defvar\n" |
362 | "@defvar O_RDWR\n" | |
363 | "Open the file read/write.\n" | |
364 | "@end defvar\n" | |
365 | "@defvar O_APPEND\n" | |
366 | "Append to the file instead of truncating.\n" | |
367 | "@end defvar\n" | |
368 | "@defvar O_CREAT\n" | |
369 | "Create the file if it does not already exist.\n" | |
370 | "@end defvar\n\n" | |
371 | "See the Unix documentation of the @code{open} system call\n" | |
372 | "for additional flags.") | |
1bbd0b84 | 373 | #define FUNC_NAME s_scm_open |
6afcd3b2 GH |
374 | { |
375 | SCM newpt; | |
376 | char *port_mode; | |
377 | int fd; | |
6afcd3b2 GH |
378 | int iflags; |
379 | ||
e11e83f3 | 380 | fd = scm_to_int (scm_open_fdes (path, flags, mode)); |
1be6b49c | 381 | iflags = SCM_NUM2INT (2, flags); |
3d8d56df | 382 | if (iflags & O_RDWR) |
77a76b64 JB |
383 | { |
384 | if (iflags & O_APPEND) | |
385 | port_mode = "a+"; | |
386 | else if (iflags & O_CREAT) | |
387 | port_mode = "w+"; | |
388 | else | |
389 | port_mode = "r+"; | |
390 | } | |
3d8d56df | 391 | else { |
77a76b64 JB |
392 | if (iflags & O_APPEND) |
393 | port_mode = "a"; | |
394 | else if (iflags & O_WRONLY) | |
3d8d56df GH |
395 | port_mode = "w"; |
396 | else | |
397 | port_mode = "r"; | |
398 | } | |
77a76b64 | 399 | newpt = scm_fdes_to_port (fd, port_mode, path); |
3d8d56df | 400 | return newpt; |
0f2d19dd | 401 | } |
1bbd0b84 | 402 | #undef FUNC_NAME |
0f2d19dd | 403 | |
a1ec6916 | 404 | SCM_DEFINE (scm_close, "close", 1, 0, 0, |
1bbd0b84 | 405 | (SCM fd_or_port), |
8f85c0c6 | 406 | "Similar to close-port (@pxref{Closing, close-port}),\n" |
d3818c29 MD |
407 | "but also works on file descriptors. A side\n" |
408 | "effect of closing a file descriptor is that any ports using that file\n" | |
409 | "descriptor are moved to a different file descriptor and have\n" | |
410 | "their revealed counts set to zero.") | |
1bbd0b84 | 411 | #define FUNC_NAME s_scm_close |
eadd48de GH |
412 | { |
413 | int rv; | |
414 | int fd; | |
415 | ||
78446828 MV |
416 | fd_or_port = SCM_COERCE_OUTPORT (fd_or_port); |
417 | ||
0c95b57d | 418 | if (SCM_PORTP (fd_or_port)) |
eadd48de | 419 | return scm_close_port (fd_or_port); |
a55c2b68 | 420 | fd = scm_to_int (fd_or_port); |
eadd48de | 421 | scm_evict_ports (fd); /* see scsh manual. */ |
a9488d12 | 422 | SCM_SYSCALL (rv = close (fd)); |
eadd48de GH |
423 | /* following scsh, closing an already closed file descriptor is |
424 | not an error. */ | |
425 | if (rv < 0 && errno != EBADF) | |
1bbd0b84 | 426 | SCM_SYSERROR; |
7888309b | 427 | return scm_from_bool (rv >= 0); |
eadd48de | 428 | } |
1bbd0b84 | 429 | #undef FUNC_NAME |
eadd48de | 430 | |
c2ca4493 GH |
431 | SCM_DEFINE (scm_close_fdes, "close-fdes", 1, 0, 0, |
432 | (SCM fd), | |
433 | "A simple wrapper for the @code{close} system call.\n" | |
434 | "Close file descriptor @var{fd}, which must be an integer.\n" | |
435 | "Unlike close (@pxref{Ports and File Descriptors, close}),\n" | |
436 | "the file descriptor will be closed even if a port is using it.\n" | |
437 | "The return value is unspecified.") | |
438 | #define FUNC_NAME s_scm_close_fdes | |
439 | { | |
440 | int c_fd; | |
441 | int rv; | |
442 | ||
a55c2b68 | 443 | c_fd = scm_to_int (fd); |
c2ca4493 GH |
444 | SCM_SYSCALL (rv = close (c_fd)); |
445 | if (rv < 0) | |
446 | SCM_SYSERROR; | |
447 | return SCM_UNSPECIFIED; | |
448 | } | |
449 | #undef FUNC_NAME | |
450 | ||
0f2d19dd JB |
451 | \f |
452 | /* {Files} | |
453 | */ | |
1cc91f1b | 454 | |
ae5253c5 GH |
455 | SCM_SYMBOL (scm_sym_regular, "regular"); |
456 | SCM_SYMBOL (scm_sym_directory, "directory"); | |
23f2b9a3 | 457 | #ifdef S_ISLNK |
ae5253c5 | 458 | SCM_SYMBOL (scm_sym_symlink, "symlink"); |
f326ecf3 | 459 | #endif |
ae5253c5 GH |
460 | SCM_SYMBOL (scm_sym_block_special, "block-special"); |
461 | SCM_SYMBOL (scm_sym_char_special, "char-special"); | |
462 | SCM_SYMBOL (scm_sym_fifo, "fifo"); | |
463 | SCM_SYMBOL (scm_sym_sock, "socket"); | |
464 | SCM_SYMBOL (scm_sym_unknown, "unknown"); | |
465 | ||
0f2d19dd | 466 | static SCM |
2b829bbb | 467 | scm_stat2scm (struct stat_or_stat64 *stat_temp) |
0f2d19dd | 468 | { |
00ffa0e7 | 469 | SCM ans = scm_c_make_vector (15, SCM_UNSPECIFIED); |
ae5253c5 | 470 | |
4057a3e0 | 471 | SCM_SIMPLE_VECTOR_SET(ans, 0, scm_from_ulong (stat_temp->st_dev)); |
2b829bbb | 472 | SCM_SIMPLE_VECTOR_SET(ans, 1, scm_from_ino_t_or_ino64_t (stat_temp->st_ino)); |
4057a3e0 MV |
473 | SCM_SIMPLE_VECTOR_SET(ans, 2, scm_from_ulong (stat_temp->st_mode)); |
474 | SCM_SIMPLE_VECTOR_SET(ans, 3, scm_from_ulong (stat_temp->st_nlink)); | |
475 | SCM_SIMPLE_VECTOR_SET(ans, 4, scm_from_ulong (stat_temp->st_uid)); | |
476 | SCM_SIMPLE_VECTOR_SET(ans, 5, scm_from_ulong (stat_temp->st_gid)); | |
1fd85bc5 | 477 | #ifdef HAVE_STRUCT_STAT_ST_RDEV |
4057a3e0 | 478 | SCM_SIMPLE_VECTOR_SET(ans, 6, scm_from_ulong (stat_temp->st_rdev)); |
0f2d19dd | 479 | #else |
4057a3e0 | 480 | SCM_SIMPLE_VECTOR_SET(ans, 6, SCM_BOOL_F); |
0f2d19dd | 481 | #endif |
2b829bbb | 482 | SCM_SIMPLE_VECTOR_SET(ans, 7, scm_from_off_t_or_off64_t (stat_temp->st_size)); |
4057a3e0 MV |
483 | SCM_SIMPLE_VECTOR_SET(ans, 8, scm_from_ulong (stat_temp->st_atime)); |
484 | SCM_SIMPLE_VECTOR_SET(ans, 9, scm_from_ulong (stat_temp->st_mtime)); | |
485 | SCM_SIMPLE_VECTOR_SET(ans, 10, scm_from_ulong (stat_temp->st_ctime)); | |
1fd85bc5 | 486 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
4057a3e0 | 487 | SCM_SIMPLE_VECTOR_SET(ans, 11, scm_from_ulong (stat_temp->st_blksize)); |
0f2d19dd | 488 | #else |
4057a3e0 | 489 | SCM_SIMPLE_VECTOR_SET(ans, 11, scm_from_ulong (4096L)); |
0f2d19dd | 490 | #endif |
1fd85bc5 | 491 | #ifdef HAVE_STRUCT_STAT_ST_BLOCKS |
2b829bbb | 492 | SCM_SIMPLE_VECTOR_SET(ans, 12, scm_from_blkcnt_t_or_blkcnt64_t (stat_temp->st_blocks)); |
0f2d19dd | 493 | #else |
4057a3e0 | 494 | SCM_SIMPLE_VECTOR_SET(ans, 12, SCM_BOOL_F); |
0f2d19dd | 495 | #endif |
ae5253c5 GH |
496 | { |
497 | int mode = stat_temp->st_mode; | |
498 | ||
499 | if (S_ISREG (mode)) | |
4057a3e0 | 500 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_regular); |
ae5253c5 | 501 | else if (S_ISDIR (mode)) |
4057a3e0 | 502 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_directory); |
23f2b9a3 KR |
503 | #ifdef S_ISLNK |
504 | /* systems without symlinks probably don't have S_ISLNK */ | |
ae5253c5 | 505 | else if (S_ISLNK (mode)) |
4057a3e0 | 506 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_symlink); |
f326ecf3 | 507 | #endif |
ae5253c5 | 508 | else if (S_ISBLK (mode)) |
4057a3e0 | 509 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_block_special); |
ae5253c5 | 510 | else if (S_ISCHR (mode)) |
4057a3e0 | 511 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_char_special); |
ae5253c5 | 512 | else if (S_ISFIFO (mode)) |
4057a3e0 | 513 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_fifo); |
e655d034 | 514 | #ifdef S_ISSOCK |
ae5253c5 | 515 | else if (S_ISSOCK (mode)) |
4057a3e0 | 516 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_sock); |
e655d034 | 517 | #endif |
ae5253c5 | 518 | else |
4057a3e0 | 519 | SCM_SIMPLE_VECTOR_SET(ans, 13, scm_sym_unknown); |
ae5253c5 | 520 | |
4057a3e0 | 521 | SCM_SIMPLE_VECTOR_SET(ans, 14, scm_from_int ((~S_IFMT) & mode)); |
ae5253c5 GH |
522 | |
523 | /* the layout of the bits in ve[14] is intended to be portable. | |
524 | If there are systems that don't follow the usual convention, | |
525 | the following could be used: | |
526 | ||
527 | tmp = 0; | |
528 | if (S_ISUID & mode) tmp += 1; | |
529 | tmp <<= 1; | |
530 | if (S_IRGRP & mode) tmp += 1; | |
531 | tmp <<= 1; | |
532 | if (S_ISVTX & mode) tmp += 1; | |
533 | tmp <<= 1; | |
534 | if (S_IRUSR & mode) tmp += 1; | |
535 | tmp <<= 1; | |
536 | if (S_IWUSR & mode) tmp += 1; | |
537 | tmp <<= 1; | |
538 | if (S_IXUSR & mode) tmp += 1; | |
539 | tmp <<= 1; | |
540 | if (S_IWGRP & mode) tmp += 1; | |
541 | tmp <<= 1; | |
542 | if (S_IXGRP & mode) tmp += 1; | |
543 | tmp <<= 1; | |
544 | if (S_IROTH & mode) tmp += 1; | |
545 | tmp <<= 1; | |
546 | if (S_IWOTH & mode) tmp += 1; | |
547 | tmp <<= 1; | |
548 | if (S_IXOTH & mode) tmp += 1; | |
549 | ||
4057a3e0 | 550 | SCM_SIMPLE_VECTOR_SET(ans, 14, scm_from_int (tmp)); |
ae5253c5 GH |
551 | |
552 | */ | |
553 | } | |
0f2d19dd JB |
554 | |
555 | return ans; | |
556 | } | |
557 | ||
e0c73a1c MV |
558 | #ifdef __MINGW32__ |
559 | /* | |
560 | * Try getting the appropiate stat buffer for a given file descriptor | |
561 | * under Windows. It differentiates between file, pipe and socket | |
562 | * descriptors. | |
563 | */ | |
564 | static int fstat_Win32 (int fdes, struct stat *buf) | |
565 | { | |
566 | int error, optlen = sizeof (int); | |
567 | ||
568 | memset (buf, 0, sizeof (struct stat)); | |
569 | ||
570 | /* Is this a socket ? */ | |
571 | if (getsockopt (fdes, SOL_SOCKET, SO_ERROR, (void *) &error, &optlen) >= 0) | |
572 | { | |
573 | buf->st_mode = _S_IFSOCK | _S_IREAD | _S_IWRITE | _S_IEXEC; | |
574 | buf->st_nlink = 1; | |
575 | buf->st_atime = buf->st_ctime = buf->st_mtime = time (NULL); | |
576 | return 0; | |
577 | } | |
578 | /* Maybe a regular file or pipe ? */ | |
579 | return fstat (fdes, buf); | |
580 | } | |
581 | #endif /* __MINGW32__ */ | |
582 | ||
fcb6f5ff AW |
583 | SCM_DEFINE (scm_stat, "stat", 1, 1, 0, |
584 | (SCM object, SCM exception_on_error), | |
1e6808ea MG |
585 | "Return an object containing various information about the file\n" |
586 | "determined by @var{obj}. @var{obj} can be a string containing\n" | |
587 | "a file name or a port or integer file descriptor which is open\n" | |
588 | "on a file (in which case @code{fstat} is used as the underlying\n" | |
589 | "system call).\n" | |
590 | "\n" | |
fcb6f5ff AW |
591 | "If the optional @var{exception_on_error} argument is true, which\n" |
592 | "is the default, an exception will be raised if the underlying\n" | |
593 | "system call returns an error, for example if the file is not\n" | |
594 | "found or is not readable. Otherwise, an error will cause\n" | |
595 | "@code{stat} to return @code{#f}." | |
596 | "\n" | |
597 | "The object returned by a successful call to @code{stat} can be\n" | |
598 | "passed as a single parameter to the following procedures, all of\n" | |
599 | "which return integers:\n" | |
1e6808ea | 600 | "\n" |
d3818c29 MD |
601 | "@table @code\n" |
602 | "@item stat:dev\n" | |
603 | "The device containing the file.\n" | |
604 | "@item stat:ino\n" | |
1e6808ea MG |
605 | "The file serial number, which distinguishes this file from all\n" |
606 | "other files on the same device.\n" | |
d3818c29 | 607 | "@item stat:mode\n" |
1e6808ea MG |
608 | "The mode of the file. This includes file type information and\n" |
609 | "the file permission bits. See @code{stat:type} and\n" | |
610 | "@code{stat:perms} below.\n" | |
d3818c29 MD |
611 | "@item stat:nlink\n" |
612 | "The number of hard links to the file.\n" | |
613 | "@item stat:uid\n" | |
614 | "The user ID of the file's owner.\n" | |
615 | "@item stat:gid\n" | |
616 | "The group ID of the file.\n" | |
617 | "@item stat:rdev\n" | |
618 | "Device ID; this entry is defined only for character or block\n" | |
619 | "special files.\n" | |
620 | "@item stat:size\n" | |
621 | "The size of a regular file in bytes.\n" | |
622 | "@item stat:atime\n" | |
623 | "The last access time for the file.\n" | |
624 | "@item stat:mtime\n" | |
625 | "The last modification time for the file.\n" | |
626 | "@item stat:ctime\n" | |
627 | "The last modification time for the attributes of the file.\n" | |
628 | "@item stat:blksize\n" | |
1e6808ea MG |
629 | "The optimal block size for reading or writing the file, in\n" |
630 | "bytes.\n" | |
d3818c29 | 631 | "@item stat:blocks\n" |
1e6808ea MG |
632 | "The amount of disk space that the file occupies measured in\n" |
633 | "units of 512 byte blocks.\n" | |
634 | "@end table\n" | |
635 | "\n" | |
d3818c29 | 636 | "In addition, the following procedures return the information\n" |
1e6808ea MG |
637 | "from stat:mode in a more convenient form:\n" |
638 | "\n" | |
d3818c29 MD |
639 | "@table @code\n" |
640 | "@item stat:type\n" | |
641 | "A symbol representing the type of file. Possible values are\n" | |
1e6808ea MG |
642 | "regular, directory, symlink, block-special, char-special, fifo,\n" |
643 | "socket and unknown\n" | |
d3818c29 MD |
644 | "@item stat:perms\n" |
645 | "An integer representing the access permission bits.\n" | |
646 | "@end table") | |
1bbd0b84 | 647 | #define FUNC_NAME s_scm_stat |
0f2d19dd | 648 | { |
6afcd3b2 GH |
649 | int rv; |
650 | int fdes; | |
2b829bbb | 651 | struct stat_or_stat64 stat_temp; |
0f2d19dd | 652 | |
e11e83f3 | 653 | if (scm_is_integer (object)) |
36284627 | 654 | { |
e0c73a1c | 655 | #ifdef __MINGW32__ |
e11e83f3 | 656 | SCM_SYSCALL (rv = fstat_Win32 (scm_to_int (object), &stat_temp)); |
e0c73a1c | 657 | #else |
2b829bbb | 658 | SCM_SYSCALL (rv = fstat_or_fstat64 (scm_to_int (object), &stat_temp)); |
e0c73a1c | 659 | #endif |
36284627 | 660 | } |
7f9994d9 | 661 | else if (scm_is_string (object)) |
36284627 | 662 | { |
7f9994d9 | 663 | char *file = scm_to_locale_string (object); |
e0c73a1c | 664 | #ifdef __MINGW32__ |
7f9994d9 | 665 | char *p; |
e0c73a1c MV |
666 | p = file + strlen (file) - 1; |
667 | while (p > file && (*p == '/' || *p == '\\')) | |
668 | *p-- = '\0'; | |
7f9994d9 | 669 | #endif |
2b829bbb | 670 | SCM_SYSCALL (rv = stat_or_stat64 (file, &stat_temp)); |
e0c73a1c | 671 | free (file); |
36284627 | 672 | } |
1ea47048 | 673 | else |
0f2d19dd | 674 | { |
36284627 DH |
675 | object = SCM_COERCE_OUTPORT (object); |
676 | SCM_VALIDATE_OPFPORT (1, object); | |
677 | fdes = SCM_FPORT_FDES (object); | |
e0c73a1c MV |
678 | #ifdef __MINGW32__ |
679 | SCM_SYSCALL (rv = fstat_Win32 (fdes, &stat_temp)); | |
680 | #else | |
2b829bbb | 681 | SCM_SYSCALL (rv = fstat_or_fstat64 (fdes, &stat_temp)); |
e0c73a1c | 682 | #endif |
6afcd3b2 | 683 | } |
36284627 | 684 | |
6afcd3b2 | 685 | if (rv == -1) |
3d8d56df | 686 | { |
fcb6f5ff AW |
687 | if (SCM_UNBNDP (exception_on_error) || scm_is_true (exception_on_error)) |
688 | { | |
689 | int en = errno; | |
690 | SCM_SYSERROR_MSG ("~A: ~S", | |
691 | scm_list_2 (scm_strerror (scm_from_int (en)), | |
692 | object), | |
693 | en); | |
694 | } | |
695 | else | |
696 | return SCM_BOOL_F; | |
3d8d56df | 697 | } |
02b754d3 | 698 | return scm_stat2scm (&stat_temp); |
0f2d19dd | 699 | } |
1bbd0b84 | 700 | #undef FUNC_NAME |
0f2d19dd | 701 | |
0f2d19dd JB |
702 | \f |
703 | /* {Modifying Directories} | |
704 | */ | |
705 | ||
82893676 | 706 | #ifdef HAVE_LINK |
a1ec6916 | 707 | SCM_DEFINE (scm_link, "link", 2, 0, 0, |
1bbd0b84 | 708 | (SCM oldpath, SCM newpath), |
6d36532c GH |
709 | "Creates a new name @var{newpath} in the file system for the\n" |
710 | "file named by @var{oldpath}. If @var{oldpath} is a symbolic\n" | |
711 | "link, the link may or may not be followed depending on the\n" | |
712 | "system.") | |
1bbd0b84 | 713 | #define FUNC_NAME s_scm_link |
0f2d19dd JB |
714 | { |
715 | int val; | |
02b754d3 | 716 | |
1299a0f1 MV |
717 | STRING2_SYSCALL (oldpath, c_oldpath, |
718 | newpath, c_newpath, | |
719 | val = link (c_oldpath, c_newpath)); | |
02b754d3 | 720 | if (val != 0) |
1bbd0b84 | 721 | SCM_SYSERROR; |
02b754d3 | 722 | return SCM_UNSPECIFIED; |
0f2d19dd | 723 | } |
1bbd0b84 | 724 | #undef FUNC_NAME |
82893676 | 725 | #endif /* HAVE_LINK */ |
0f2d19dd | 726 | |
1299a0f1 MV |
727 | #ifdef HAVE_RENAME |
728 | #define my_rename rename | |
729 | #else | |
730 | static int | |
731 | my_rename (const char *oldname, const char *newname) | |
732 | { | |
733 | int rv; | |
0f2d19dd | 734 | |
1299a0f1 MV |
735 | SCM_SYSCALL (rv = link (oldname, newname)); |
736 | if (rv == 0) | |
737 | { | |
738 | SCM_SYSCALL (rv = unlink (oldname)); | |
739 | if (rv != 0) | |
740 | /* unlink failed. remove new name */ | |
741 | SCM_SYSCALL (unlink (newname)); | |
742 | } | |
743 | return rv; | |
744 | } | |
745 | #endif | |
0f2d19dd | 746 | |
a1ec6916 | 747 | SCM_DEFINE (scm_rename, "rename-file", 2, 0, 0, |
1bbd0b84 | 748 | (SCM oldname, SCM newname), |
6d36532c | 749 | "Renames the file specified by @var{oldname} to @var{newname}.\n" |
d3818c29 | 750 | "The return value is unspecified.") |
1bbd0b84 | 751 | #define FUNC_NAME s_scm_rename |
0f2d19dd JB |
752 | { |
753 | int rv; | |
1299a0f1 MV |
754 | |
755 | STRING2_SYSCALL (oldname, c_oldname, | |
756 | newname, c_newname, | |
757 | rv = my_rename (c_oldname, c_newname)); | |
02b754d3 | 758 | if (rv != 0) |
1bbd0b84 | 759 | SCM_SYSERROR; |
02b754d3 | 760 | return SCM_UNSPECIFIED; |
0f2d19dd | 761 | } |
1bbd0b84 | 762 | #undef FUNC_NAME |
0f2d19dd JB |
763 | |
764 | ||
3b3b36dd | 765 | SCM_DEFINE (scm_delete_file, "delete-file", 1, 0, 0, |
1bbd0b84 | 766 | (SCM str), |
d3818c29 | 767 | "Deletes (or \"unlinks\") the file specified by @var{path}.") |
1bbd0b84 | 768 | #define FUNC_NAME s_scm_delete_file |
2f3ed1ba JB |
769 | { |
770 | int ans; | |
1299a0f1 | 771 | STRING_SYSCALL (str, c_str, ans = unlink (c_str)); |
2f3ed1ba | 772 | if (ans != 0) |
1bbd0b84 | 773 | SCM_SYSERROR; |
2f3ed1ba JB |
774 | return SCM_UNSPECIFIED; |
775 | } | |
1bbd0b84 | 776 | #undef FUNC_NAME |
2f3ed1ba | 777 | |
f25f761d | 778 | #ifdef HAVE_MKDIR |
a1ec6916 | 779 | SCM_DEFINE (scm_mkdir, "mkdir", 1, 1, 0, |
1bbd0b84 | 780 | (SCM path, SCM mode), |
d3818c29 MD |
781 | "Create a new directory named by @var{path}. If @var{mode} is omitted\n" |
782 | "then the permissions of the directory file are set using the current\n" | |
783 | "umask. Otherwise they are set to the decimal value specified with\n" | |
784 | "@var{mode}. The return value is unspecified.") | |
1bbd0b84 | 785 | #define FUNC_NAME s_scm_mkdir |
0f2d19dd | 786 | { |
0f2d19dd JB |
787 | int rv; |
788 | mode_t mask; | |
1299a0f1 | 789 | |
0f2d19dd JB |
790 | if (SCM_UNBNDP (mode)) |
791 | { | |
792 | mask = umask (0); | |
793 | umask (mask); | |
1299a0f1 | 794 | STRING_SYSCALL (path, c_path, rv = mkdir (c_path, 0777 ^ mask)); |
0f2d19dd JB |
795 | } |
796 | else | |
797 | { | |
1299a0f1 | 798 | STRING_SYSCALL (path, c_path, rv = mkdir (c_path, scm_to_uint (mode))); |
0f2d19dd | 799 | } |
02b754d3 | 800 | if (rv != 0) |
1bbd0b84 | 801 | SCM_SYSERROR; |
02b754d3 | 802 | return SCM_UNSPECIFIED; |
0f2d19dd | 803 | } |
1bbd0b84 | 804 | #undef FUNC_NAME |
f25f761d | 805 | #endif /* HAVE_MKDIR */ |
0f2d19dd | 806 | |
f25f761d | 807 | #ifdef HAVE_RMDIR |
a1ec6916 | 808 | SCM_DEFINE (scm_rmdir, "rmdir", 1, 0, 0, |
1bbd0b84 | 809 | (SCM path), |
d3818c29 MD |
810 | "Remove the existing directory named by @var{path}. The directory must\n" |
811 | "be empty for this to succeed. The return value is unspecified.") | |
1bbd0b84 | 812 | #define FUNC_NAME s_scm_rmdir |
0f2d19dd | 813 | { |
0f2d19dd | 814 | int val; |
02b754d3 | 815 | |
1299a0f1 | 816 | STRING_SYSCALL (path, c_path, val = rmdir (c_path)); |
02b754d3 | 817 | if (val != 0) |
1bbd0b84 | 818 | SCM_SYSERROR; |
02b754d3 | 819 | return SCM_UNSPECIFIED; |
0f2d19dd | 820 | } |
1bbd0b84 | 821 | #undef FUNC_NAME |
f25f761d | 822 | #endif |
0f2d19dd JB |
823 | |
824 | \f | |
30ea841d | 825 | |
0f2d19dd JB |
826 | /* {Examining Directories} |
827 | */ | |
828 | ||
92c2555f | 829 | scm_t_bits scm_tc16_dir; |
0f2d19dd | 830 | |
30ea841d | 831 | |
a1ec6916 | 832 | SCM_DEFINE (scm_directory_stream_p, "directory-stream?", 1, 0, 0, |
1bbd0b84 | 833 | (SCM obj), |
1e6808ea MG |
834 | "Return a boolean indicating whether @var{object} is a directory\n" |
835 | "stream as returned by @code{opendir}.") | |
1bbd0b84 | 836 | #define FUNC_NAME s_scm_directory_stream_p |
77242ff9 | 837 | { |
7888309b | 838 | return scm_from_bool (SCM_DIRP (obj)); |
77242ff9 | 839 | } |
1bbd0b84 | 840 | #undef FUNC_NAME |
77242ff9 | 841 | |
30ea841d | 842 | |
a1ec6916 | 843 | SCM_DEFINE (scm_opendir, "opendir", 1, 0, 0, |
1bbd0b84 | 844 | (SCM dirname), |
d3818c29 MD |
845 | "Open the directory specified by @var{path} and return a directory\n" |
846 | "stream.") | |
1bbd0b84 | 847 | #define FUNC_NAME s_scm_opendir |
0f2d19dd JB |
848 | { |
849 | DIR *ds; | |
1299a0f1 | 850 | STRING_SYSCALL (dirname, c_dirname, ds = opendir (c_dirname)); |
02b754d3 | 851 | if (ds == NULL) |
1bbd0b84 | 852 | SCM_SYSERROR; |
30ea841d | 853 | SCM_RETURN_NEWSMOB (scm_tc16_dir | SCM_DIR_FLAG_OPEN, ds); |
0f2d19dd | 854 | } |
1bbd0b84 | 855 | #undef FUNC_NAME |
0f2d19dd JB |
856 | |
857 | ||
9be808d8 KR |
858 | /* FIXME: The glibc manual has a portability note that readdir_r may not |
859 | null-terminate its return string. The circumstances outlined for this | |
2b829bbb KR |
860 | are not clear, nor is it clear what should be done about it. Lets use |
861 | NAMLEN and worry about what else should be done if/when someone can | |
862 | figure it out. */ | |
9be808d8 | 863 | |
a1ec6916 | 864 | SCM_DEFINE (scm_readdir, "readdir", 1, 0, 0, |
1bbd0b84 | 865 | (SCM port), |
d3818c29 MD |
866 | "Return (as a string) the next directory entry from the directory stream\n" |
867 | "@var{stream}. If there is no remaining entry to be read then the\n" | |
868 | "end of file object is returned.") | |
1bbd0b84 | 869 | #define FUNC_NAME s_scm_readdir |
0f2d19dd | 870 | { |
2b829bbb | 871 | struct dirent_or_dirent64 *rdent; |
30ea841d DH |
872 | |
873 | SCM_VALIDATE_DIR (1, port); | |
874 | if (!SCM_DIR_OPEN_P (port)) | |
1afff620 | 875 | SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port)); |
30ea841d | 876 | |
9be808d8 | 877 | #if HAVE_READDIR_R |
2b829bbb KR |
878 | /* As noted in the glibc manual, on various systems (such as Solaris) the |
879 | d_name[] field is only 1 char and you're expected to size the dirent | |
880 | buffer for readdir_r based on NAME_MAX. The SCM_MAX expressions below | |
881 | effectively give either sizeof(d_name) or NAME_MAX+1, whichever is | |
882 | bigger. | |
883 | ||
884 | On solaris 10 there's no NAME_MAX constant, it's necessary to use | |
885 | pathconf(). We prefer NAME_MAX though, since it should be a constant | |
886 | and will therefore save a system call. We also prefer it since dirfd() | |
887 | is not available everywhere. | |
888 | ||
889 | An alternative to dirfd() would be to open() the directory and then use | |
890 | fdopendir(), if the latter is available. That'd let us hold the fd | |
891 | somewhere in the smob, or just the dirent size calculated once. */ | |
892 | { | |
893 | struct dirent_or_dirent64 de; /* just for sizeof */ | |
894 | DIR *ds = (DIR *) SCM_CELL_WORD_1 (port); | |
895 | size_t namlen; | |
896 | #ifdef NAME_MAX | |
897 | char buf [SCM_MAX (sizeof (de), | |
898 | sizeof (de) - sizeof (de.d_name) + NAME_MAX + 1)]; | |
9be808d8 | 899 | #else |
2b829bbb KR |
900 | char *buf; |
901 | long name_max = fpathconf (dirfd (ds), _PC_NAME_MAX); | |
902 | if (name_max == -1) | |
903 | SCM_SYSERROR; | |
904 | buf = alloca (SCM_MAX (sizeof (de), | |
905 | sizeof (de) - sizeof (de.d_name) + name_max + 1)); | |
9be808d8 | 906 | #endif |
2b829bbb KR |
907 | |
908 | errno = 0; | |
909 | SCM_SYSCALL (readdir_r_or_readdir64_r (ds, (struct dirent_or_dirent64 *) buf, &rdent)); | |
9be808d8 KR |
910 | if (errno != 0) |
911 | SCM_SYSERROR; | |
2b829bbb KR |
912 | if (! rdent) |
913 | return SCM_EOF_VAL; | |
914 | ||
915 | namlen = NAMLEN (rdent); | |
30ea841d | 916 | |
cc95e00a | 917 | return (rdent ? scm_from_locale_stringn (rdent->d_name, NAMLEN (rdent)) |
9be808d8 KR |
918 | : SCM_EOF_VAL); |
919 | } | |
2b829bbb KR |
920 | #else |
921 | { | |
922 | SCM ret; | |
923 | scm_dynwind_begin (0); | |
924 | scm_i_dynwind_pthread_mutex_lock (&scm_i_misc_mutex); | |
925 | ||
926 | errno = 0; | |
927 | SCM_SYSCALL (rdent = readdir_or_readdir64 ((DIR *) SCM_CELL_WORD_1 (port))); | |
928 | if (errno != 0) | |
929 | SCM_SYSERROR; | |
930 | ||
931 | ret = (rdent ? scm_from_locale_stringn (rdent->d_name, NAMLEN (rdent)) | |
932 | : SCM_EOF_VAL); | |
933 | ||
934 | scm_dynwind_end (); | |
935 | return ret; | |
936 | } | |
937 | #endif | |
0f2d19dd | 938 | } |
1bbd0b84 | 939 | #undef FUNC_NAME |
0f2d19dd JB |
940 | |
941 | ||
a1ec6916 | 942 | SCM_DEFINE (scm_rewinddir, "rewinddir", 1, 0, 0, |
1bbd0b84 | 943 | (SCM port), |
d3818c29 MD |
944 | "Reset the directory port @var{stream} so that the next call to\n" |
945 | "@code{readdir} will return the first directory entry.") | |
1bbd0b84 | 946 | #define FUNC_NAME s_scm_rewinddir |
0f2d19dd | 947 | { |
30ea841d DH |
948 | SCM_VALIDATE_DIR (1, port); |
949 | if (!SCM_DIR_OPEN_P (port)) | |
1afff620 | 950 | SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port)); |
30ea841d | 951 | |
4260a7fc | 952 | rewinddir ((DIR *) SCM_CELL_WORD_1 (port)); |
30ea841d | 953 | |
0f2d19dd JB |
954 | return SCM_UNSPECIFIED; |
955 | } | |
1bbd0b84 | 956 | #undef FUNC_NAME |
0f2d19dd JB |
957 | |
958 | ||
a1ec6916 | 959 | SCM_DEFINE (scm_closedir, "closedir", 1, 0, 0, |
1bbd0b84 | 960 | (SCM port), |
d3818c29 MD |
961 | "Close the directory stream @var{stream}.\n" |
962 | "The return value is unspecified.") | |
1bbd0b84 | 963 | #define FUNC_NAME s_scm_closedir |
0f2d19dd | 964 | { |
30ea841d | 965 | SCM_VALIDATE_DIR (1, port); |
02b754d3 | 966 | |
30ea841d | 967 | if (SCM_DIR_OPEN_P (port)) |
0f2d19dd | 968 | { |
30ea841d DH |
969 | int sts; |
970 | ||
971 | SCM_SYSCALL (sts = closedir ((DIR *) SCM_CELL_WORD_1 (port))); | |
972 | if (sts != 0) | |
973 | SCM_SYSERROR; | |
974 | ||
975 | SCM_SET_CELL_WORD_0 (port, scm_tc16_dir); | |
0f2d19dd | 976 | } |
30ea841d | 977 | |
02b754d3 | 978 | return SCM_UNSPECIFIED; |
0f2d19dd | 979 | } |
1bbd0b84 | 980 | #undef FUNC_NAME |
0f2d19dd JB |
981 | |
982 | ||
0f2d19dd | 983 | static int |
e81d98ec | 984 | scm_dir_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
0f2d19dd | 985 | { |
f8b16091 | 986 | scm_puts ("#<", port); |
30ea841d | 987 | if (!SCM_DIR_OPEN_P (exp)) |
f8b16091 | 988 | scm_puts ("closed: ", port); |
0d03da62 | 989 | scm_puts ("directory stream ", port); |
0345e278 | 990 | scm_uintprint (SCM_CELL_WORD_1 (exp), 16, port); |
f8b16091 | 991 | scm_putc ('>', port); |
0f2d19dd JB |
992 | return 1; |
993 | } | |
994 | ||
1cc91f1b | 995 | |
1be6b49c | 996 | static size_t |
1bbd0b84 | 997 | scm_dir_free (SCM p) |
0f2d19dd | 998 | { |
30ea841d | 999 | if (SCM_DIR_OPEN_P (p)) |
4260a7fc | 1000 | closedir ((DIR *) SCM_CELL_WORD_1 (p)); |
0f2d19dd JB |
1001 | return 0; |
1002 | } | |
1003 | ||
0f2d19dd JB |
1004 | \f |
1005 | /* {Navigating Directories} | |
1006 | */ | |
1007 | ||
1008 | ||
a1ec6916 | 1009 | SCM_DEFINE (scm_chdir, "chdir", 1, 0, 0, |
1bbd0b84 | 1010 | (SCM str), |
d3818c29 MD |
1011 | "Change the current working directory to @var{path}.\n" |
1012 | "The return value is unspecified.") | |
1bbd0b84 | 1013 | #define FUNC_NAME s_scm_chdir |
0f2d19dd JB |
1014 | { |
1015 | int ans; | |
02b754d3 | 1016 | |
1299a0f1 | 1017 | STRING_SYSCALL (str, c_str, ans = chdir (c_str)); |
02b754d3 | 1018 | if (ans != 0) |
1bbd0b84 | 1019 | SCM_SYSERROR; |
02b754d3 | 1020 | return SCM_UNSPECIFIED; |
0f2d19dd | 1021 | } |
1bbd0b84 | 1022 | #undef FUNC_NAME |
0f2d19dd | 1023 | |
f25f761d | 1024 | #ifdef HAVE_GETCWD |
a1ec6916 | 1025 | SCM_DEFINE (scm_getcwd, "getcwd", 0, 0, 0, |
1bbd0b84 | 1026 | (), |
1e6808ea | 1027 | "Return the name of the current working directory.") |
1bbd0b84 | 1028 | #define FUNC_NAME s_scm_getcwd |
0f2d19dd | 1029 | { |
0f2d19dd | 1030 | char *rv; |
1be6b49c | 1031 | size_t size = 100; |
0f2d19dd JB |
1032 | char *wd; |
1033 | SCM result; | |
1034 | ||
4c9419ac | 1035 | wd = scm_malloc (size); |
0f2d19dd JB |
1036 | while ((rv = getcwd (wd, size)) == 0 && errno == ERANGE) |
1037 | { | |
4c9419ac | 1038 | free (wd); |
0f2d19dd | 1039 | size *= 2; |
4c9419ac | 1040 | wd = scm_malloc (size); |
0f2d19dd | 1041 | } |
02b754d3 | 1042 | if (rv == 0) |
11e1db06 KR |
1043 | { |
1044 | int save_errno = errno; | |
1045 | free (wd); | |
1046 | errno = save_errno; | |
1047 | SCM_SYSERROR; | |
1048 | } | |
cc95e00a | 1049 | result = scm_from_locale_stringn (wd, strlen (wd)); |
4c9419ac | 1050 | free (wd); |
0f2d19dd | 1051 | return result; |
0f2d19dd | 1052 | } |
1bbd0b84 | 1053 | #undef FUNC_NAME |
f25f761d | 1054 | #endif /* HAVE_GETCWD */ |
0f2d19dd JB |
1055 | |
1056 | \f | |
1057 | ||
28d77376 GH |
1058 | #ifdef HAVE_SELECT |
1059 | ||
1060 | /* check that element is a port or file descriptor. if it's a port | |
1061 | and its buffer is ready for use, add it to the ports_ready list. | |
1062 | otherwise add its file descriptor to *set. the type of list can be | |
1063 | determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes, | |
1064 | SCM_ARG3 for excepts. */ | |
cafc12ff | 1065 | static int |
28d77376 | 1066 | set_element (SELECT_TYPE *set, SCM *ports_ready, SCM element, int pos) |
a48a89bc | 1067 | { |
cafc12ff | 1068 | int fd; |
d831b039 | 1069 | |
e11e83f3 | 1070 | if (scm_is_integer (element)) |
28d77376 | 1071 | { |
e11e83f3 | 1072 | fd = scm_to_int (element); |
28d77376 GH |
1073 | } |
1074 | else | |
1075 | { | |
1076 | int use_buf = 0; | |
1077 | ||
1078 | element = SCM_COERCE_OUTPORT (element); | |
1079 | SCM_ASSERT (SCM_OPFPORTP (element), element, pos, "select"); | |
1080 | if (pos == SCM_ARG1) | |
1081 | { | |
1082 | /* check whether port has buffered input. */ | |
92c2555f | 1083 | scm_t_port *pt = SCM_PTAB_ENTRY (element); |
28d77376 GH |
1084 | |
1085 | if (pt->read_pos < pt->read_end) | |
1086 | use_buf = 1; | |
1087 | } | |
1088 | else if (pos == SCM_ARG2) | |
1089 | { | |
1090 | /* check whether port's output buffer has room. */ | |
92c2555f | 1091 | scm_t_port *pt = SCM_PTAB_ENTRY (element); |
28d77376 GH |
1092 | |
1093 | /* > 1 since writing the last byte in the buffer causes flush. */ | |
1094 | if (pt->write_end - pt->write_pos > 1) | |
1095 | use_buf = 1; | |
1096 | } | |
1097 | fd = use_buf ? -1 : SCM_FPORT_FDES (element); | |
1098 | } | |
1099 | if (fd == -1) | |
1100 | *ports_ready = scm_cons (element, *ports_ready); | |
1101 | else | |
1102 | FD_SET (fd, set); | |
cafc12ff | 1103 | return fd; |
a48a89bc | 1104 | } |
1cc91f1b | 1105 | |
28d77376 GH |
1106 | /* check list_or_vec, a list or vector of ports or file descriptors, |
1107 | adding each member to either the ports_ready list (if it's a port | |
1108 | with a usable buffer) or to *set. the kind of list_or_vec can be | |
1109 | determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes, | |
1110 | SCM_ARG3 for excepts. */ | |
cafc12ff | 1111 | static int |
28d77376 | 1112 | fill_select_type (SELECT_TYPE *set, SCM *ports_ready, SCM list_or_vec, int pos) |
0f2d19dd | 1113 | { |
28d77376 GH |
1114 | int max_fd = 0; |
1115 | ||
4057a3e0 | 1116 | if (scm_is_simple_vector (list_or_vec)) |
0f2d19dd | 1117 | { |
4057a3e0 | 1118 | int i = SCM_SIMPLE_VECTOR_LENGTH (list_or_vec); |
a48a89bc | 1119 | |
28d77376 | 1120 | while (--i >= 0) |
a48a89bc | 1121 | { |
4057a3e0 MV |
1122 | int fd = set_element (set, ports_ready, |
1123 | SCM_SIMPLE_VECTOR_REF (list_or_vec, i), pos); | |
28d77376 | 1124 | |
cafc12ff MD |
1125 | if (fd > max_fd) |
1126 | max_fd = fd; | |
a48a89bc GH |
1127 | } |
1128 | } | |
1129 | else | |
1130 | { | |
c96d76b8 | 1131 | while (!SCM_NULL_OR_NIL_P (list_or_vec)) |
a48a89bc | 1132 | { |
28d77376 GH |
1133 | int fd = set_element (set, ports_ready, SCM_CAR (list_or_vec), pos); |
1134 | ||
cafc12ff MD |
1135 | if (fd > max_fd) |
1136 | max_fd = fd; | |
28d77376 | 1137 | list_or_vec = SCM_CDR (list_or_vec); |
a48a89bc | 1138 | } |
0f2d19dd | 1139 | } |
cafc12ff MD |
1140 | |
1141 | return max_fd; | |
0f2d19dd JB |
1142 | } |
1143 | ||
28d77376 GH |
1144 | /* if element (a file descriptor or port) appears in *set, cons it to |
1145 | list. return list. */ | |
a48a89bc GH |
1146 | static SCM |
1147 | get_element (SELECT_TYPE *set, SCM element, SCM list) | |
1148 | { | |
28d77376 GH |
1149 | int fd; |
1150 | ||
e11e83f3 | 1151 | if (scm_is_integer (element)) |
a48a89bc | 1152 | { |
e11e83f3 | 1153 | fd = scm_to_int (element); |
a48a89bc | 1154 | } |
28d77376 | 1155 | else |
a48a89bc | 1156 | { |
28d77376 | 1157 | fd = SCM_FPORT_FDES (SCM_COERCE_OUTPORT (element)); |
a48a89bc | 1158 | } |
28d77376 GH |
1159 | if (FD_ISSET (fd, set)) |
1160 | list = scm_cons (element, list); | |
a48a89bc GH |
1161 | return list; |
1162 | } | |
1cc91f1b | 1163 | |
28d77376 GH |
1164 | /* construct component of scm_select return value. |
1165 | set: pointer to set of file descriptors found by select to be ready | |
1166 | ports_ready: ports ready due to buffering | |
1167 | list_or_vec: original list/vector handed to scm_select. | |
1168 | the return value is a list/vector of ready ports/file descriptors. | |
1169 | works by finding the objects in list which correspond to members of | |
1170 | *set and appending them to ports_ready. result is converted to a | |
1171 | vector if list_or_vec is a vector. */ | |
0f2d19dd | 1172 | static SCM |
28d77376 | 1173 | retrieve_select_type (SELECT_TYPE *set, SCM ports_ready, SCM list_or_vec) |
0f2d19dd | 1174 | { |
28d77376 | 1175 | SCM answer_list = ports_ready; |
a48a89bc | 1176 | |
4057a3e0 | 1177 | if (scm_is_simple_vector (list_or_vec)) |
0f2d19dd | 1178 | { |
4057a3e0 | 1179 | int i = SCM_SIMPLE_VECTOR_LENGTH (list_or_vec); |
a48a89bc | 1180 | |
28d77376 | 1181 | while (--i >= 0) |
0f2d19dd | 1182 | { |
4057a3e0 MV |
1183 | answer_list = get_element (set, |
1184 | SCM_SIMPLE_VECTOR_REF (list_or_vec, i), | |
1185 | answer_list); | |
0f2d19dd | 1186 | } |
a48a89bc GH |
1187 | return scm_vector (answer_list); |
1188 | } | |
1189 | else | |
1190 | { | |
28d77376 | 1191 | /* list_or_vec must be a list. */ |
c96d76b8 | 1192 | while (!SCM_NULL_OR_NIL_P (list_or_vec)) |
0f2d19dd | 1193 | { |
28d77376 GH |
1194 | answer_list = get_element (set, SCM_CAR (list_or_vec), answer_list); |
1195 | list_or_vec = SCM_CDR (list_or_vec); | |
0f2d19dd | 1196 | } |
a48a89bc | 1197 | return answer_list; |
0f2d19dd | 1198 | } |
0f2d19dd JB |
1199 | } |
1200 | ||
1bbd0b84 | 1201 | /* Static helper functions above refer to s_scm_select directly as s_select */ |
a1ec6916 | 1202 | SCM_DEFINE (scm_select, "select", 3, 2, 0, |
1bbd0b84 | 1203 | (SCM reads, SCM writes, SCM excepts, SCM secs, SCM usecs), |
28d77376 | 1204 | "This procedure has a variety of uses: waiting for the ability\n" |
bb2c02f2 | 1205 | "to provide input, accept output, or the existence of\n" |
28d77376 GH |
1206 | "exceptional conditions on a collection of ports or file\n" |
1207 | "descriptors, or waiting for a timeout to occur.\n" | |
1208 | "It also returns if interrupted by a signal.\n\n" | |
1209 | "@var{reads}, @var{writes} and @var{excepts} can be lists or\n" | |
1210 | "vectors, with each member a port or a file descriptor.\n" | |
1211 | "The value returned is a list of three corresponding\n" | |
1212 | "lists or vectors containing only the members which meet the\n" | |
1213 | "specified requirement. The ability of port buffers to\n" | |
1214 | "provide input or accept output is taken into account.\n" | |
1215 | "Ordering of the input lists or vectors is not preserved.\n\n" | |
1216 | "The optional arguments @var{secs} and @var{usecs} specify the\n" | |
1217 | "timeout. Either @var{secs} can be specified alone, as\n" | |
1218 | "either an integer or a real number, or both @var{secs} and\n" | |
1219 | "@var{usecs} can be specified as integers, in which case\n" | |
1220 | "@var{usecs} is an additional timeout expressed in\n" | |
1221 | "microseconds. If @var{secs} is omitted or is @code{#f} then\n" | |
1222 | "select will wait for as long as it takes for one of the other\n" | |
1223 | "conditions to be satisfied.\n\n" | |
1224 | "The scsh version of @code{select} differs as follows:\n" | |
1225 | "Only vectors are accepted for the first three arguments.\n" | |
1226 | "The @var{usecs} argument is not supported.\n" | |
1227 | "Multiple values are returned instead of a list.\n" | |
1228 | "Duplicates in the input vectors appear only once in output.\n" | |
9401323e | 1229 | "An additional @code{select!} interface is provided.") |
1bbd0b84 | 1230 | #define FUNC_NAME s_scm_select |
0f2d19dd | 1231 | { |
0f2d19dd | 1232 | struct timeval timeout; |
28d77376 | 1233 | struct timeval * time_ptr; |
0f2d19dd JB |
1234 | SELECT_TYPE read_set; |
1235 | SELECT_TYPE write_set; | |
1236 | SELECT_TYPE except_set; | |
28d77376 GH |
1237 | int read_count; |
1238 | int write_count; | |
1239 | int except_count; | |
1240 | /* these lists accumulate ports which are ready due to buffering. | |
1241 | their file descriptors don't need to be added to the select sets. */ | |
1242 | SCM read_ports_ready = SCM_EOL; | |
1243 | SCM write_ports_ready = SCM_EOL; | |
1244 | int max_fd; | |
1245 | ||
4057a3e0 | 1246 | if (scm_is_simple_vector (reads)) |
28d77376 | 1247 | { |
4057a3e0 | 1248 | read_count = SCM_SIMPLE_VECTOR_LENGTH (reads); |
28d77376 GH |
1249 | } |
1250 | else | |
1251 | { | |
1252 | read_count = scm_ilength (reads); | |
1253 | SCM_ASSERT (read_count >= 0, reads, SCM_ARG1, FUNC_NAME); | |
1254 | } | |
4057a3e0 | 1255 | if (scm_is_simple_vector (writes)) |
28d77376 | 1256 | { |
4057a3e0 | 1257 | write_count = SCM_SIMPLE_VECTOR_LENGTH (writes); |
28d77376 GH |
1258 | } |
1259 | else | |
1260 | { | |
1261 | write_count = scm_ilength (writes); | |
1262 | SCM_ASSERT (write_count >= 0, writes, SCM_ARG2, FUNC_NAME); | |
1263 | } | |
4057a3e0 | 1264 | if (scm_is_simple_vector (excepts)) |
28d77376 | 1265 | { |
4057a3e0 | 1266 | except_count = SCM_SIMPLE_VECTOR_LENGTH (excepts); |
28d77376 GH |
1267 | } |
1268 | else | |
1269 | { | |
1270 | except_count = scm_ilength (excepts); | |
1271 | SCM_ASSERT (except_count >= 0, excepts, SCM_ARG3, FUNC_NAME); | |
1272 | } | |
0f2d19dd JB |
1273 | |
1274 | FD_ZERO (&read_set); | |
1275 | FD_ZERO (&write_set); | |
1276 | FD_ZERO (&except_set); | |
1277 | ||
28d77376 GH |
1278 | max_fd = fill_select_type (&read_set, &read_ports_ready, reads, SCM_ARG1); |
1279 | ||
1280 | { | |
1281 | int write_max = fill_select_type (&write_set, &write_ports_ready, | |
1282 | writes, SCM_ARG2); | |
1283 | int except_max = fill_select_type (&except_set, NULL, | |
1284 | excepts, SCM_ARG3); | |
1285 | ||
1286 | if (write_max > max_fd) | |
1287 | max_fd = write_max; | |
1288 | if (except_max > max_fd) | |
1289 | max_fd = except_max; | |
1290 | } | |
0f2d19dd | 1291 | |
ae1b098b GH |
1292 | /* if there's a port with a ready buffer, don't block, just |
1293 | check for ready file descriptors. */ | |
d2e53ed6 | 1294 | if (!scm_is_null (read_ports_ready) || !scm_is_null (write_ports_ready)) |
ae1b098b GH |
1295 | { |
1296 | timeout.tv_sec = 0; | |
1297 | timeout.tv_usec = 0; | |
1298 | time_ptr = &timeout; | |
1299 | } | |
7888309b | 1300 | else if (SCM_UNBNDP (secs) || scm_is_false (secs)) |
28d77376 | 1301 | time_ptr = 0; |
0f2d19dd JB |
1302 | else |
1303 | { | |
a55c2b68 | 1304 | if (scm_is_unsigned_integer (secs, 0, ULONG_MAX)) |
a48a89bc | 1305 | { |
a55c2b68 | 1306 | timeout.tv_sec = scm_to_ulong (secs); |
a48a89bc GH |
1307 | if (SCM_UNBNDP (usecs)) |
1308 | timeout.tv_usec = 0; | |
1309 | else | |
a55c2b68 | 1310 | timeout.tv_usec = scm_to_long (usecs); |
a48a89bc | 1311 | } |
0f2d19dd | 1312 | else |
a48a89bc | 1313 | { |
d9a67fc4 | 1314 | double fl = scm_to_double (secs); |
a48a89bc GH |
1315 | |
1316 | if (!SCM_UNBNDP (usecs)) | |
c1bfcf60 | 1317 | SCM_WRONG_TYPE_ARG (4, secs); |
a48a89bc | 1318 | if (fl > LONG_MAX) |
c1bfcf60 | 1319 | SCM_OUT_OF_RANGE (4, secs); |
a48a89bc GH |
1320 | timeout.tv_sec = (long) fl; |
1321 | timeout.tv_usec = (long) ((fl - timeout.tv_sec) * 1000000); | |
1322 | } | |
28d77376 | 1323 | time_ptr = &timeout; |
0f2d19dd JB |
1324 | } |
1325 | ||
28d77376 | 1326 | { |
9de87eea MV |
1327 | int rv = scm_std_select (max_fd + 1, |
1328 | &read_set, &write_set, &except_set, | |
1329 | time_ptr); | |
28d77376 GH |
1330 | if (rv < 0) |
1331 | SCM_SYSERROR; | |
1332 | } | |
1afff620 KN |
1333 | return scm_list_3 (retrieve_select_type (&read_set, read_ports_ready, reads), |
1334 | retrieve_select_type (&write_set, write_ports_ready, writes), | |
1335 | retrieve_select_type (&except_set, SCM_EOL, excepts)); | |
0f2d19dd | 1336 | } |
1bbd0b84 | 1337 | #undef FUNC_NAME |
f25f761d | 1338 | #endif /* HAVE_SELECT */ |
0f2d19dd JB |
1339 | |
1340 | \f | |
4c1feaa5 | 1341 | |
82893676 | 1342 | #ifdef HAVE_FCNTL |
af45e3b0 | 1343 | SCM_DEFINE (scm_fcntl, "fcntl", 2, 1, 0, |
1bbd0b84 | 1344 | (SCM object, SCM cmd, SCM value), |
d3818c29 MD |
1345 | "Apply @var{command} to the specified file descriptor or the underlying\n" |
1346 | "file descriptor of the specified port. @var{value} is an optional\n" | |
1347 | "integer argument.\n\n" | |
1348 | "Values for @var{command} are:\n\n" | |
1349 | "@table @code\n" | |
1350 | "@item F_DUPFD\n" | |
1351 | "Duplicate a file descriptor\n" | |
1352 | "@item F_GETFD\n" | |
1353 | "Get flags associated with the file descriptor.\n" | |
1354 | "@item F_SETFD\n" | |
1355 | "Set flags associated with the file descriptor to @var{value}.\n" | |
1356 | "@item F_GETFL\n" | |
1357 | "Get flags associated with the open file.\n" | |
1358 | "@item F_SETFL\n" | |
1359 | "Set flags associated with the open file to @var{value}\n" | |
1360 | "@item F_GETOWN\n" | |
1361 | "Get the process ID of a socket's owner, for @code{SIGIO} signals.\n" | |
1362 | "@item F_SETOWN\n" | |
1363 | "Set the process that owns a socket to @var{value}, for @code{SIGIO} signals.\n" | |
1364 | "@item FD_CLOEXEC\n" | |
55892d87 NJ |
1365 | "The value used to indicate the \"close on exec\" flag with @code{F_GETFL} or\n" |
1366 | "@code{F_SETFL}.\n" | |
a3c8b9fc | 1367 | "@end table") |
1bbd0b84 | 1368 | #define FUNC_NAME s_scm_fcntl |
4c1feaa5 JB |
1369 | { |
1370 | int rv; | |
6afcd3b2 GH |
1371 | int fdes; |
1372 | int ivalue; | |
4c1feaa5 | 1373 | |
78446828 MV |
1374 | object = SCM_COERCE_OUTPORT (object); |
1375 | ||
0c95b57d | 1376 | if (SCM_OPFPORTP (object)) |
77a76b64 | 1377 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 | 1378 | else |
a55c2b68 | 1379 | fdes = scm_to_int (object); |
af45e3b0 | 1380 | |
a55c2b68 | 1381 | if (SCM_UNBNDP (value)) |
6afcd3b2 | 1382 | ivalue = 0; |
a55c2b68 MV |
1383 | else |
1384 | ivalue = scm_to_int (value); | |
af45e3b0 | 1385 | |
a55c2b68 | 1386 | SCM_SYSCALL (rv = fcntl (fdes, scm_to_int (cmd), ivalue)); |
77a76b64 | 1387 | if (rv == -1) |
1bbd0b84 | 1388 | SCM_SYSERROR; |
a55c2b68 | 1389 | return scm_from_int (rv); |
4c1feaa5 | 1390 | } |
1bbd0b84 | 1391 | #undef FUNC_NAME |
82893676 | 1392 | #endif /* HAVE_FCNTL */ |
6afcd3b2 | 1393 | |
a1ec6916 | 1394 | SCM_DEFINE (scm_fsync, "fsync", 1, 0, 0, |
1bbd0b84 | 1395 | (SCM object), |
d3818c29 MD |
1396 | "Copies any unwritten data for the specified output file descriptor to disk.\n" |
1397 | "If @var{port/fd} is a port, its buffer is flushed before the underlying\n" | |
1398 | "file descriptor is fsync'd.\n" | |
1399 | "The return value is unspecified.") | |
1bbd0b84 | 1400 | #define FUNC_NAME s_scm_fsync |
6afcd3b2 GH |
1401 | { |
1402 | int fdes; | |
1403 | ||
78446828 MV |
1404 | object = SCM_COERCE_OUTPORT (object); |
1405 | ||
0c95b57d | 1406 | if (SCM_OPFPORTP (object)) |
6afcd3b2 | 1407 | { |
affc96b5 | 1408 | scm_flush (object); |
77a76b64 | 1409 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
1410 | } |
1411 | else | |
a55c2b68 MV |
1412 | fdes = scm_to_int (object); |
1413 | ||
6afcd3b2 | 1414 | if (fsync (fdes) == -1) |
1bbd0b84 | 1415 | SCM_SYSERROR; |
6afcd3b2 GH |
1416 | return SCM_UNSPECIFIED; |
1417 | } | |
1bbd0b84 | 1418 | #undef FUNC_NAME |
0f2d19dd | 1419 | |
f25f761d | 1420 | #ifdef HAVE_SYMLINK |
a1ec6916 | 1421 | SCM_DEFINE (scm_symlink, "symlink", 2, 0, 0, |
1bbd0b84 | 1422 | (SCM oldpath, SCM newpath), |
d3818c29 MD |
1423 | "Create a symbolic link named @var{path-to} with the value (i.e., pointing to)\n" |
1424 | "@var{path-from}. The return value is unspecified.") | |
1bbd0b84 | 1425 | #define FUNC_NAME s_scm_symlink |
0f2d19dd | 1426 | { |
0f2d19dd | 1427 | int val; |
02b754d3 | 1428 | |
1299a0f1 MV |
1429 | STRING2_SYSCALL (oldpath, c_oldpath, |
1430 | newpath, c_newpath, | |
1431 | val = symlink (c_oldpath, c_newpath)); | |
02b754d3 | 1432 | if (val != 0) |
1bbd0b84 | 1433 | SCM_SYSERROR; |
02b754d3 | 1434 | return SCM_UNSPECIFIED; |
0f2d19dd | 1435 | } |
1bbd0b84 | 1436 | #undef FUNC_NAME |
f25f761d | 1437 | #endif /* HAVE_SYMLINK */ |
0f2d19dd | 1438 | |
f25f761d | 1439 | #ifdef HAVE_READLINK |
a1ec6916 | 1440 | SCM_DEFINE (scm_readlink, "readlink", 1, 0, 0, |
1bbd0b84 | 1441 | (SCM path), |
1e6808ea MG |
1442 | "Return the value of the symbolic link named by @var{path} (a\n" |
1443 | "string), i.e., the file that the link points to.") | |
1bbd0b84 | 1444 | #define FUNC_NAME s_scm_readlink |
0f2d19dd | 1445 | { |
6a738a25 JB |
1446 | int rv; |
1447 | int size = 100; | |
0f2d19dd JB |
1448 | char *buf; |
1449 | SCM result; | |
1299a0f1 MV |
1450 | char *c_path; |
1451 | ||
661ae7ab | 1452 | scm_dynwind_begin (0); |
1299a0f1 MV |
1453 | |
1454 | c_path = scm_to_locale_string (path); | |
661ae7ab | 1455 | scm_dynwind_free (c_path); |
1299a0f1 | 1456 | |
4c9419ac | 1457 | buf = scm_malloc (size); |
1299a0f1 MV |
1458 | |
1459 | while ((rv = readlink (c_path, buf, size)) == size) | |
0f2d19dd | 1460 | { |
4c9419ac | 1461 | free (buf); |
0f2d19dd | 1462 | size *= 2; |
4c9419ac | 1463 | buf = scm_malloc (size); |
0f2d19dd | 1464 | } |
02b754d3 | 1465 | if (rv == -1) |
11e1db06 KR |
1466 | { |
1467 | int save_errno = errno; | |
1468 | free (buf); | |
1469 | errno = save_errno; | |
1470 | SCM_SYSERROR; | |
1471 | } | |
1299a0f1 MV |
1472 | result = scm_take_locale_stringn (buf, rv); |
1473 | ||
661ae7ab | 1474 | scm_dynwind_end (); |
0f2d19dd | 1475 | return result; |
0f2d19dd | 1476 | } |
1bbd0b84 | 1477 | #undef FUNC_NAME |
f25f761d | 1478 | #endif /* HAVE_READLINK */ |
0f2d19dd | 1479 | |
f25f761d | 1480 | #ifdef HAVE_LSTAT |
a1ec6916 | 1481 | SCM_DEFINE (scm_lstat, "lstat", 1, 0, 0, |
1bbd0b84 | 1482 | (SCM str), |
d3818c29 | 1483 | "Similar to @code{stat}, but does not follow symbolic links, i.e.,\n" |
9401323e | 1484 | "it will return information about a symbolic link itself, not the\n" |
d3818c29 | 1485 | "file it points to. @var{path} must be a string.") |
1bbd0b84 | 1486 | #define FUNC_NAME s_scm_lstat |
0f2d19dd | 1487 | { |
02b754d3 | 1488 | int rv; |
2b829bbb | 1489 | struct stat_or_stat64 stat_temp; |
02b754d3 | 1490 | |
2b829bbb | 1491 | STRING_SYSCALL (str, c_str, rv = lstat_or_lstat64 (c_str, &stat_temp)); |
02b754d3 | 1492 | if (rv != 0) |
3d8d56df GH |
1493 | { |
1494 | int en = errno; | |
1495 | ||
5d2d2ffc | 1496 | SCM_SYSERROR_MSG ("~A: ~S", |
3572cd6b | 1497 | scm_list_2 (scm_strerror (scm_from_int (en)), str), |
e0c08f17 | 1498 | en); |
3d8d56df | 1499 | } |
1299a0f1 | 1500 | return scm_stat2scm (&stat_temp); |
0f2d19dd | 1501 | } |
1bbd0b84 | 1502 | #undef FUNC_NAME |
f25f761d | 1503 | #endif /* HAVE_LSTAT */ |
0f2d19dd | 1504 | |
a1ec6916 | 1505 | SCM_DEFINE (scm_copy_file, "copy-file", 2, 0, 0, |
1bbd0b84 | 1506 | (SCM oldfile, SCM newfile), |
d3818c29 MD |
1507 | "Copy the file specified by @var{path-from} to @var{path-to}.\n" |
1508 | "The return value is unspecified.") | |
1bbd0b84 | 1509 | #define FUNC_NAME s_scm_copy_file |
0f2d19dd | 1510 | { |
1299a0f1 | 1511 | char *c_oldfile, *c_newfile; |
0f2d19dd | 1512 | int oldfd, newfd; |
37eb673b | 1513 | int n, rv; |
77a76b64 | 1514 | char buf[BUFSIZ]; |
2b829bbb | 1515 | struct stat_or_stat64 oldstat; |
0f2d19dd | 1516 | |
661ae7ab | 1517 | scm_dynwind_begin (0); |
1299a0f1 MV |
1518 | |
1519 | c_oldfile = scm_to_locale_string (oldfile); | |
661ae7ab | 1520 | scm_dynwind_free (c_oldfile); |
1299a0f1 | 1521 | c_newfile = scm_to_locale_string (newfile); |
661ae7ab | 1522 | scm_dynwind_free (c_newfile); |
37eb673b | 1523 | |
2b829bbb | 1524 | oldfd = open_or_open64 (c_oldfile, O_RDONLY); |
0f2d19dd | 1525 | if (oldfd == -1) |
1bbd0b84 | 1526 | SCM_SYSERROR; |
02b754d3 | 1527 | |
37eb673b KR |
1528 | #ifdef __MINGW32__ |
1529 | SCM_SYSCALL (rv = fstat_Win32 (oldfd, &oldstat)); | |
1530 | #else | |
2b829bbb | 1531 | SCM_SYSCALL (rv = fstat_or_fstat64 (oldfd, &oldstat)); |
37eb673b KR |
1532 | #endif |
1533 | if (rv == -1) | |
1534 | goto err_close_oldfd; | |
1535 | ||
02b754d3 | 1536 | /* use POSIX flags instead of 07777?. */ |
2b829bbb KR |
1537 | newfd = open_or_open64 (c_newfile, O_WRONLY | O_CREAT | O_TRUNC, |
1538 | oldstat.st_mode & 07777); | |
0f2d19dd | 1539 | if (newfd == -1) |
01046395 | 1540 | { |
37eb673b | 1541 | err_close_oldfd: |
01046395 KR |
1542 | close (oldfd); |
1543 | SCM_SYSERROR; | |
1544 | } | |
02b754d3 | 1545 | |
0f2d19dd JB |
1546 | while ((n = read (oldfd, buf, sizeof buf)) > 0) |
1547 | if (write (newfd, buf, n) != n) | |
1548 | { | |
1549 | close (oldfd); | |
1550 | close (newfd); | |
1bbd0b84 | 1551 | SCM_SYSERROR; |
0f2d19dd JB |
1552 | } |
1553 | close (oldfd); | |
1554 | if (close (newfd) == -1) | |
1bbd0b84 | 1555 | SCM_SYSERROR; |
1299a0f1 | 1556 | |
661ae7ab | 1557 | scm_dynwind_end (); |
02b754d3 | 1558 | return SCM_UNSPECIFIED; |
0f2d19dd | 1559 | } |
1bbd0b84 | 1560 | #undef FUNC_NAME |
0f2d19dd JB |
1561 | |
1562 | \f | |
6a738a25 JB |
1563 | /* Filename manipulation */ |
1564 | ||
1565 | SCM scm_dot_string; | |
1566 | ||
a1ec6916 | 1567 | SCM_DEFINE (scm_dirname, "dirname", 1, 0, 0, |
1bbd0b84 | 1568 | (SCM filename), |
fa6a543f MG |
1569 | "Return the directory name component of the file name\n" |
1570 | "@var{filename}. If @var{filename} does not contain a directory\n" | |
1571 | "component, @code{.} is returned.") | |
1bbd0b84 | 1572 | #define FUNC_NAME s_scm_dirname |
6a738a25 | 1573 | { |
cc95e00a | 1574 | const char *s; |
9fd38a3d DH |
1575 | long int i; |
1576 | unsigned long int len; | |
1577 | ||
34d19ef6 | 1578 | SCM_VALIDATE_STRING (1, filename); |
9fd38a3d | 1579 | |
cc95e00a MV |
1580 | s = scm_i_string_chars (filename); |
1581 | len = scm_i_string_length (filename); | |
9fd38a3d | 1582 | |
6a738a25 | 1583 | i = len - 1; |
82893676 MG |
1584 | #ifdef __MINGW32__ |
1585 | while (i >= 0 && (s[i] == '/' || s[i] == '\\')) --i; | |
e0c73a1c | 1586 | while (i >= 0 && (s[i] != '/' && s[i] != '\\')) --i; |
82893676 MG |
1587 | while (i >= 0 && (s[i] == '/' || s[i] == '\\')) --i; |
1588 | #else | |
6a738a25 JB |
1589 | while (i >= 0 && s[i] == '/') --i; |
1590 | while (i >= 0 && s[i] != '/') --i; | |
1591 | while (i >= 0 && s[i] == '/') --i; | |
82893676 | 1592 | #endif /* ndef __MINGW32__ */ |
6a738a25 JB |
1593 | if (i < 0) |
1594 | { | |
82893676 MG |
1595 | #ifdef __MINGW32__ |
1596 | if (len > 0 && (s[0] == '/' || s[0] == '\\')) | |
1597 | #else | |
6a738a25 | 1598 | if (len > 0 && s[0] == '/') |
82893676 | 1599 | #endif /* ndef __MINGW32__ */ |
cc95e00a | 1600 | return scm_c_substring (filename, 0, 1); |
6a738a25 JB |
1601 | else |
1602 | return scm_dot_string; | |
1603 | } | |
1604 | else | |
cc95e00a | 1605 | return scm_c_substring (filename, 0, i + 1); |
6a738a25 | 1606 | } |
1bbd0b84 | 1607 | #undef FUNC_NAME |
6a738a25 | 1608 | |
a1ec6916 | 1609 | SCM_DEFINE (scm_basename, "basename", 1, 1, 0, |
1bbd0b84 | 1610 | (SCM filename, SCM suffix), |
fa6a543f MG |
1611 | "Return the base name of the file name @var{filename}. The\n" |
1612 | "base name is the file name without any directory components.\n" | |
bb2c02f2 | 1613 | "If @var{suffix} is provided, and is equal to the end of\n" |
fa6a543f | 1614 | "@var{basename}, it is removed also.") |
1bbd0b84 | 1615 | #define FUNC_NAME s_scm_basename |
6a738a25 | 1616 | { |
cc95e00a | 1617 | const char *f, *s = 0; |
6a738a25 | 1618 | int i, j, len, end; |
9fd38a3d | 1619 | |
34d19ef6 | 1620 | SCM_VALIDATE_STRING (1, filename); |
cc95e00a MV |
1621 | f = scm_i_string_chars (filename); |
1622 | len = scm_i_string_length (filename); | |
9fd38a3d | 1623 | |
6a738a25 JB |
1624 | if (SCM_UNBNDP (suffix)) |
1625 | j = -1; | |
1626 | else | |
1627 | { | |
9fd38a3d | 1628 | SCM_VALIDATE_STRING (2, suffix); |
cc95e00a MV |
1629 | s = scm_i_string_chars (suffix); |
1630 | j = scm_i_string_length (suffix) - 1; | |
6a738a25 | 1631 | } |
6a738a25 | 1632 | i = len - 1; |
82893676 MG |
1633 | #ifdef __MINGW32__ |
1634 | while (i >= 0 && (f[i] == '/' || f[i] == '\\')) --i; | |
1635 | #else | |
6a738a25 | 1636 | while (i >= 0 && f[i] == '/') --i; |
82893676 | 1637 | #endif /* ndef __MINGW32__ */ |
6a738a25 JB |
1638 | end = i; |
1639 | while (i >= 0 && j >= 0 && f[i] == s[j]) --i, --j; | |
1640 | if (j == -1) | |
1641 | end = i; | |
82893676 | 1642 | #ifdef __MINGW32__ |
2e945bcc | 1643 | while (i >= 0 && f[i] != '/' && f[i] != '\\') --i; |
82893676 | 1644 | #else |
6a738a25 | 1645 | while (i >= 0 && f[i] != '/') --i; |
82893676 | 1646 | #endif /* ndef __MINGW32__ */ |
6a738a25 JB |
1647 | if (i == end) |
1648 | { | |
82893676 | 1649 | #ifdef __MINGW32__ |
2e945bcc | 1650 | if (len > 0 && (f[0] == '/' || f[0] == '\\')) |
82893676 | 1651 | #else |
6a738a25 | 1652 | if (len > 0 && f[0] == '/') |
82893676 | 1653 | #endif /* ndef __MINGW32__ */ |
cc95e00a | 1654 | return scm_c_substring (filename, 0, 1); |
6a738a25 JB |
1655 | else |
1656 | return scm_dot_string; | |
1657 | } | |
1658 | else | |
cc95e00a | 1659 | return scm_c_substring (filename, i+1, end+1); |
6a738a25 | 1660 | } |
1bbd0b84 | 1661 | #undef FUNC_NAME |
6a738a25 JB |
1662 | |
1663 | ||
1664 | ||
1665 | \f | |
1cc91f1b | 1666 | |
0f2d19dd JB |
1667 | void |
1668 | scm_init_filesys () | |
0f2d19dd | 1669 | { |
e841c3e0 KN |
1670 | scm_tc16_dir = scm_make_smob_type ("directory", 0); |
1671 | scm_set_smob_free (scm_tc16_dir, scm_dir_free); | |
1672 | scm_set_smob_print (scm_tc16_dir, scm_dir_print); | |
0f2d19dd | 1673 | |
cc95e00a | 1674 | scm_dot_string = scm_permanent_object (scm_from_locale_string (".")); |
a163dda9 | 1675 | |
3d8d56df | 1676 | #ifdef O_RDONLY |
23d72566 | 1677 | scm_c_define ("O_RDONLY", scm_from_int (O_RDONLY)); |
3d8d56df GH |
1678 | #endif |
1679 | #ifdef O_WRONLY | |
23d72566 | 1680 | scm_c_define ("O_WRONLY", scm_from_int (O_WRONLY)); |
3d8d56df GH |
1681 | #endif |
1682 | #ifdef O_RDWR | |
23d72566 | 1683 | scm_c_define ("O_RDWR", scm_from_int (O_RDWR)); |
3d8d56df GH |
1684 | #endif |
1685 | #ifdef O_CREAT | |
23d72566 | 1686 | scm_c_define ("O_CREAT", scm_from_int (O_CREAT)); |
3d8d56df GH |
1687 | #endif |
1688 | #ifdef O_EXCL | |
23d72566 | 1689 | scm_c_define ("O_EXCL", scm_from_int (O_EXCL)); |
3d8d56df GH |
1690 | #endif |
1691 | #ifdef O_NOCTTY | |
23d72566 | 1692 | scm_c_define ("O_NOCTTY", scm_from_int (O_NOCTTY)); |
3d8d56df GH |
1693 | #endif |
1694 | #ifdef O_TRUNC | |
23d72566 | 1695 | scm_c_define ("O_TRUNC", scm_from_int (O_TRUNC)); |
3d8d56df GH |
1696 | #endif |
1697 | #ifdef O_APPEND | |
23d72566 | 1698 | scm_c_define ("O_APPEND", scm_from_int (O_APPEND)); |
3d8d56df | 1699 | #endif |
6afcd3b2 | 1700 | #ifdef O_NONBLOCK |
23d72566 | 1701 | scm_c_define ("O_NONBLOCK", scm_from_int (O_NONBLOCK)); |
3d8d56df GH |
1702 | #endif |
1703 | #ifdef O_NDELAY | |
23d72566 | 1704 | scm_c_define ("O_NDELAY", scm_from_int (O_NDELAY)); |
3d8d56df GH |
1705 | #endif |
1706 | #ifdef O_SYNC | |
23d72566 | 1707 | scm_c_define ("O_SYNC", scm_from_int (O_SYNC)); |
3d8d56df | 1708 | #endif |
23f2b9a3 | 1709 | #ifdef O_LARGEFILE |
23d72566 | 1710 | scm_c_define ("O_LARGEFILE", scm_from_int (O_LARGEFILE)); |
23f2b9a3 | 1711 | #endif |
3d8d56df | 1712 | |
4c1feaa5 | 1713 | #ifdef F_DUPFD |
23d72566 | 1714 | scm_c_define ("F_DUPFD", scm_from_int (F_DUPFD)); |
4c1feaa5 JB |
1715 | #endif |
1716 | #ifdef F_GETFD | |
23d72566 | 1717 | scm_c_define ("F_GETFD", scm_from_int (F_GETFD)); |
4c1feaa5 JB |
1718 | #endif |
1719 | #ifdef F_SETFD | |
23d72566 | 1720 | scm_c_define ("F_SETFD", scm_from_int (F_SETFD)); |
4c1feaa5 JB |
1721 | #endif |
1722 | #ifdef F_GETFL | |
23d72566 | 1723 | scm_c_define ("F_GETFL", scm_from_int (F_GETFL)); |
4c1feaa5 JB |
1724 | #endif |
1725 | #ifdef F_SETFL | |
23d72566 | 1726 | scm_c_define ("F_SETFL", scm_from_int (F_SETFL)); |
4c1feaa5 JB |
1727 | #endif |
1728 | #ifdef F_GETOWN | |
23d72566 | 1729 | scm_c_define ("F_GETOWN", scm_from_int (F_GETOWN)); |
4c1feaa5 JB |
1730 | #endif |
1731 | #ifdef F_SETOWN | |
23d72566 | 1732 | scm_c_define ("F_SETOWN", scm_from_int (F_SETOWN)); |
4c1feaa5 JB |
1733 | #endif |
1734 | #ifdef FD_CLOEXEC | |
23d72566 | 1735 | scm_c_define ("FD_CLOEXEC", scm_from_int (FD_CLOEXEC)); |
bd9e24b3 | 1736 | #endif |
3d8d56df | 1737 | |
a0599745 | 1738 | #include "libguile/filesys.x" |
0f2d19dd | 1739 | } |
89e00824 ML |
1740 | |
1741 | /* | |
1742 | Local Variables: | |
1743 | c-file-style: "gnu" | |
1744 | End: | |
1745 | */ |