Commit | Line | Data |
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bd9e24b3 | 1 | /* Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program 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 | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd | 45 | \f |
3d8d56df | 46 | #include <stdio.h> |
a0599745 MD |
47 | #include "libguile/_scm.h" |
48 | #include "libguile/smob.h" | |
49 | #include "libguile/feature.h" | |
50 | #include "libguile/fports.h" | |
51 | #include "libguile/iselect.h" | |
52 | #include "libguile/strings.h" | |
53 | #include "libguile/vectors.h" | |
0f2d19dd | 54 | |
a0599745 MD |
55 | #include "libguile/validate.h" |
56 | #include "libguile/filesys.h" | |
def804a3 | 57 | |
0f2d19dd | 58 | \f |
def804a3 JB |
59 | #ifdef HAVE_IO_H |
60 | #include <io.h> | |
61 | #endif | |
62 | ||
0f2d19dd JB |
63 | #ifdef TIME_WITH_SYS_TIME |
64 | # include <sys/time.h> | |
65 | # include <time.h> | |
66 | #else | |
67 | # if HAVE_SYS_TIME_H | |
68 | # include <sys/time.h> | |
69 | # else | |
70 | # include <time.h> | |
71 | # endif | |
72 | #endif | |
73 | ||
74 | #ifdef HAVE_UNISTD_H | |
75 | #include <unistd.h> | |
76 | #endif | |
77 | ||
3594582b | 78 | #ifdef LIBC_H_WITH_UNISTD_H |
1f9e2226 JB |
79 | #include <libc.h> |
80 | #endif | |
81 | ||
0f2d19dd JB |
82 | #ifdef HAVE_SYS_SELECT_H |
83 | #include <sys/select.h> | |
84 | #endif | |
85 | ||
1f9e2226 JB |
86 | #ifdef HAVE_STRING_H |
87 | #include <string.h> | |
88 | #endif | |
89 | ||
8cc71382 | 90 | #include <sys/types.h> |
0f2d19dd JB |
91 | #include <sys/stat.h> |
92 | #include <fcntl.h> | |
93 | ||
94 | #include <pwd.h> | |
95 | ||
96 | ||
0f2d19dd JB |
97 | #if HAVE_DIRENT_H |
98 | # include <dirent.h> | |
99 | # define NAMLEN(dirent) strlen((dirent)->d_name) | |
100 | #else | |
101 | # define dirent direct | |
102 | # define NAMLEN(dirent) (dirent)->d_namlen | |
103 | # if HAVE_SYS_NDIR_H | |
104 | # include <sys/ndir.h> | |
105 | # endif | |
106 | # if HAVE_SYS_DIR_H | |
107 | # include <sys/dir.h> | |
108 | # endif | |
109 | # if HAVE_NDIR_H | |
110 | # include <ndir.h> | |
111 | # endif | |
112 | #endif | |
113 | ||
d7b8a21a JB |
114 | /* Ultrix has S_IFSOCK, but no S_ISSOCK. Ipe! */ |
115 | #if defined (S_IFSOCK) && ! defined (S_ISSOCK) | |
116 | #define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) | |
117 | #endif | |
0f2d19dd JB |
118 | \f |
119 | ||
0f2d19dd JB |
120 | |
121 | \f | |
122 | ||
123 | /* {Permissions} | |
124 | */ | |
125 | ||
a1ec6916 | 126 | SCM_DEFINE (scm_chown, "chown", 3, 0, 0, |
1bbd0b84 | 127 | (SCM object, SCM owner, SCM group), |
d831b039 GH |
128 | "Change the ownership and group of the file referred to by @var{object} to\n" |
129 | "the integer values @var{owner} and @var{group}. @var{object} can be\n" | |
130 | "a string containing a file name or, if the platform\n" | |
131 | "supports fchown, a port or integer file descriptor\n" | |
132 | "which is open on the file. The return value\n" | |
d3818c29 | 133 | "is unspecified.\n\n" |
d831b039 | 134 | "If @var{object} is a symbolic link, either the\n" |
d3818c29 MD |
135 | "ownership of the link or the ownership of the referenced file will be\n" |
136 | "changed depending on the operating system (lchown is\n" | |
137 | "unsupported at present). If @var{owner} or @var{group} is specified\n" | |
138 | "as @code{-1}, then that ID is not changed.") | |
1bbd0b84 | 139 | #define FUNC_NAME s_scm_chown |
0f2d19dd | 140 | { |
6afcd3b2 | 141 | int rv; |
02b754d3 | 142 | |
78446828 MV |
143 | object = SCM_COERCE_OUTPORT (object); |
144 | ||
3b3b36dd GB |
145 | SCM_VALIDATE_INUM (2,owner); |
146 | SCM_VALIDATE_INUM (3,group); | |
d831b039 | 147 | #ifdef HAVE_FCHOWN |
0c95b57d | 148 | if (SCM_INUMP (object) || (SCM_OPFPORTP (object))) |
6afcd3b2 | 149 | { |
d831b039 GH |
150 | int fdes = SCM_INUMP (object) ? SCM_INUM (object) |
151 | : SCM_FPORT_FDES (object); | |
152 | ||
6afcd3b2 GH |
153 | SCM_SYSCALL (rv = fchown (fdes, SCM_INUM (owner), SCM_INUM (group))); |
154 | } | |
155 | else | |
d831b039 | 156 | #endif |
6afcd3b2 | 157 | { |
a6d9e5ab DH |
158 | SCM_VALIDATE_STRING (1, object); |
159 | SCM_STRING_COERCE_0TERMINATION_X (object); | |
160 | SCM_SYSCALL (rv = chown (SCM_STRING_CHARS (object), | |
6afcd3b2 GH |
161 | SCM_INUM (owner), SCM_INUM (group))); |
162 | } | |
163 | if (rv == -1) | |
1bbd0b84 | 164 | SCM_SYSERROR; |
02b754d3 | 165 | return SCM_UNSPECIFIED; |
0f2d19dd | 166 | } |
1bbd0b84 | 167 | #undef FUNC_NAME |
0f2d19dd JB |
168 | |
169 | ||
a1ec6916 | 170 | SCM_DEFINE (scm_chmod, "chmod", 2, 0, 0, |
1bbd0b84 | 171 | (SCM object, SCM mode), |
d3818c29 MD |
172 | "Changes the permissions of the file referred to by @var{obj}.\n" |
173 | "@var{obj} can be a string containing a file name or a port or integer file\n" | |
174 | "descriptor which is open on a file (in which case @code{fchmod} is used\n" | |
175 | "as the underlying system call).\n" | |
176 | "@var{mode} specifies\n" | |
177 | "the new permissions as a decimal number, e.g., @code{(chmod \"foo\" #o755)}.\n" | |
178 | "The return value is unspecified.") | |
1bbd0b84 | 179 | #define FUNC_NAME s_scm_chmod |
0f2d19dd JB |
180 | { |
181 | int rv; | |
6afcd3b2 GH |
182 | int fdes; |
183 | ||
78446828 MV |
184 | object = SCM_COERCE_OUTPORT (object); |
185 | ||
3b3b36dd | 186 | SCM_VALIDATE_INUM (2,mode); |
0c95b57d | 187 | if (SCM_INUMP (object) || SCM_OPFPORTP (object)) |
89958ad0 | 188 | { |
6afcd3b2 GH |
189 | if (SCM_INUMP (object)) |
190 | fdes = SCM_INUM (object); | |
191 | else | |
77a76b64 | 192 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 | 193 | SCM_SYSCALL (rv = fchmod (fdes, SCM_INUM (mode))); |
89958ad0 | 194 | } |
0f2d19dd JB |
195 | else |
196 | { | |
a6d9e5ab DH |
197 | SCM_VALIDATE_STRING (1, object); |
198 | SCM_STRING_COERCE_0TERMINATION_X (object); | |
199 | SCM_SYSCALL (rv = chmod (SCM_STRING_CHARS (object), SCM_INUM (mode))); | |
0f2d19dd | 200 | } |
6afcd3b2 | 201 | if (rv == -1) |
1bbd0b84 | 202 | SCM_SYSERROR; |
02b754d3 | 203 | return SCM_UNSPECIFIED; |
0f2d19dd | 204 | } |
1bbd0b84 | 205 | #undef FUNC_NAME |
0f2d19dd | 206 | |
a1ec6916 | 207 | SCM_DEFINE (scm_umask, "umask", 0, 1, 0, |
1bbd0b84 | 208 | (SCM mode), |
d3818c29 MD |
209 | "If @var{mode} is omitted, retuns a decimal number representing the current\n" |
210 | "file creation mask. Otherwise the file creation mask is set to\n" | |
211 | "@var{mode} and the previous value is returned.\n\n" | |
212 | "E.g., @code{(umask #o022)} sets the mask to octal 22, decimal 18.") | |
1bbd0b84 | 213 | #define FUNC_NAME s_scm_umask |
0f2d19dd JB |
214 | { |
215 | mode_t mask; | |
216 | if (SCM_UNBNDP (mode)) | |
217 | { | |
218 | mask = umask (0); | |
219 | umask (mask); | |
220 | } | |
221 | else | |
222 | { | |
3b3b36dd | 223 | SCM_VALIDATE_INUM (1,mode); |
0f2d19dd JB |
224 | mask = umask (SCM_INUM (mode)); |
225 | } | |
226 | return SCM_MAKINUM (mask); | |
227 | } | |
1bbd0b84 | 228 | #undef FUNC_NAME |
0f2d19dd JB |
229 | |
230 | \f | |
0f2d19dd | 231 | |
a1ec6916 | 232 | SCM_DEFINE (scm_open_fdes, "open-fdes", 2, 1, 0, |
1bbd0b84 | 233 | (SCM path, SCM flags, SCM mode), |
d3818c29 MD |
234 | "Similar to @code{open} but returns a file descriptor instead of a\n" |
235 | "port.") | |
1bbd0b84 | 236 | #define FUNC_NAME s_scm_open_fdes |
0f2d19dd JB |
237 | { |
238 | int fd; | |
3d8d56df | 239 | int iflags; |
6afcd3b2 | 240 | int imode; |
0f2d19dd | 241 | |
a6d9e5ab DH |
242 | SCM_VALIDATE_STRING (1, path); |
243 | SCM_STRING_COERCE_0TERMINATION_X (path); | |
c1bfcf60 GB |
244 | iflags = SCM_NUM2LONG(2,flags); |
245 | imode = SCM_NUM2LONG_DEF(3,mode,0666); | |
a6d9e5ab | 246 | SCM_SYSCALL (fd = open (SCM_STRING_CHARS (path), iflags, imode)); |
3d8d56df | 247 | if (fd == -1) |
1bbd0b84 | 248 | SCM_SYSERROR; |
6afcd3b2 GH |
249 | return SCM_MAKINUM (fd); |
250 | } | |
1bbd0b84 | 251 | #undef FUNC_NAME |
6afcd3b2 | 252 | |
a1ec6916 | 253 | SCM_DEFINE (scm_open, "open", 2, 1, 0, |
1bbd0b84 | 254 | (SCM path, SCM flags, SCM mode), |
d3818c29 MD |
255 | "Open the file named by @var{path} for reading and/or writing.\n" |
256 | "@var{flags} is an integer specifying how the file should be opened.\n" | |
257 | "@var{mode} is an integer specifying the permission bits of the file, if\n" | |
258 | "it needs to be created, before the umask is applied. The default is 666\n" | |
259 | "(Unix itself has no default).\n\n" | |
260 | "@var{flags} can be constructed by combining variables using @code{logior}.\n" | |
261 | "Basic flags are:\n\n" | |
262 | "@defvar O_RDONLY\n" | |
263 | "Open the file read-only.\n" | |
264 | "@end defvar\n" | |
265 | "@defvar O_WRONLY\n" | |
266 | "Open the file write-only. \n" | |
267 | "@end defvar\n" | |
268 | "@defvar O_RDWR\n" | |
269 | "Open the file read/write.\n" | |
270 | "@end defvar\n" | |
271 | "@defvar O_APPEND\n" | |
272 | "Append to the file instead of truncating.\n" | |
273 | "@end defvar\n" | |
274 | "@defvar O_CREAT\n" | |
275 | "Create the file if it does not already exist.\n" | |
276 | "@end defvar\n\n" | |
277 | "See the Unix documentation of the @code{open} system call\n" | |
278 | "for additional flags.") | |
1bbd0b84 | 279 | #define FUNC_NAME s_scm_open |
6afcd3b2 GH |
280 | { |
281 | SCM newpt; | |
282 | char *port_mode; | |
283 | int fd; | |
6afcd3b2 GH |
284 | int iflags; |
285 | ||
286 | fd = SCM_INUM (scm_open_fdes (path, flags, mode)); | |
c1bfcf60 | 287 | iflags = SCM_NUM2LONG (2,flags); |
3d8d56df | 288 | if (iflags & O_RDWR) |
77a76b64 JB |
289 | { |
290 | if (iflags & O_APPEND) | |
291 | port_mode = "a+"; | |
292 | else if (iflags & O_CREAT) | |
293 | port_mode = "w+"; | |
294 | else | |
295 | port_mode = "r+"; | |
296 | } | |
3d8d56df | 297 | else { |
77a76b64 JB |
298 | if (iflags & O_APPEND) |
299 | port_mode = "a"; | |
300 | else if (iflags & O_WRONLY) | |
3d8d56df GH |
301 | port_mode = "w"; |
302 | else | |
303 | port_mode = "r"; | |
304 | } | |
77a76b64 | 305 | newpt = scm_fdes_to_port (fd, port_mode, path); |
3d8d56df | 306 | return newpt; |
0f2d19dd | 307 | } |
1bbd0b84 | 308 | #undef FUNC_NAME |
0f2d19dd | 309 | |
a1ec6916 | 310 | SCM_DEFINE (scm_close, "close", 1, 0, 0, |
1bbd0b84 | 311 | (SCM fd_or_port), |
d3818c29 MD |
312 | "Similar to close-port (@pxref{Generic Port Operations, close-port}),\n" |
313 | "but also works on file descriptors. A side\n" | |
314 | "effect of closing a file descriptor is that any ports using that file\n" | |
315 | "descriptor are moved to a different file descriptor and have\n" | |
316 | "their revealed counts set to zero.") | |
1bbd0b84 | 317 | #define FUNC_NAME s_scm_close |
eadd48de GH |
318 | { |
319 | int rv; | |
320 | int fd; | |
321 | ||
78446828 MV |
322 | fd_or_port = SCM_COERCE_OUTPORT (fd_or_port); |
323 | ||
0c95b57d | 324 | if (SCM_PORTP (fd_or_port)) |
eadd48de | 325 | return scm_close_port (fd_or_port); |
3b3b36dd | 326 | SCM_VALIDATE_INUM (1,fd_or_port); |
eadd48de | 327 | fd = SCM_INUM (fd_or_port); |
eadd48de | 328 | scm_evict_ports (fd); /* see scsh manual. */ |
a9488d12 | 329 | SCM_SYSCALL (rv = close (fd)); |
eadd48de GH |
330 | /* following scsh, closing an already closed file descriptor is |
331 | not an error. */ | |
332 | if (rv < 0 && errno != EBADF) | |
1bbd0b84 GB |
333 | SCM_SYSERROR; |
334 | return SCM_NEGATE_BOOL(rv < 0); | |
eadd48de | 335 | } |
1bbd0b84 | 336 | #undef FUNC_NAME |
eadd48de | 337 | |
c2ca4493 GH |
338 | SCM_DEFINE (scm_close_fdes, "close-fdes", 1, 0, 0, |
339 | (SCM fd), | |
340 | "A simple wrapper for the @code{close} system call.\n" | |
341 | "Close file descriptor @var{fd}, which must be an integer.\n" | |
342 | "Unlike close (@pxref{Ports and File Descriptors, close}),\n" | |
343 | "the file descriptor will be closed even if a port is using it.\n" | |
344 | "The return value is unspecified.") | |
345 | #define FUNC_NAME s_scm_close_fdes | |
346 | { | |
347 | int c_fd; | |
348 | int rv; | |
349 | ||
350 | SCM_VALIDATE_INUM_COPY (1, fd, c_fd); | |
351 | SCM_SYSCALL (rv = close (c_fd)); | |
352 | if (rv < 0) | |
353 | SCM_SYSERROR; | |
354 | return SCM_UNSPECIFIED; | |
355 | } | |
356 | #undef FUNC_NAME | |
357 | ||
0f2d19dd JB |
358 | \f |
359 | /* {Files} | |
360 | */ | |
1cc91f1b | 361 | |
ae5253c5 GH |
362 | SCM_SYMBOL (scm_sym_regular, "regular"); |
363 | SCM_SYMBOL (scm_sym_directory, "directory"); | |
f326ecf3 | 364 | #ifdef HAVE_S_ISLNK |
ae5253c5 | 365 | SCM_SYMBOL (scm_sym_symlink, "symlink"); |
f326ecf3 | 366 | #endif |
ae5253c5 GH |
367 | SCM_SYMBOL (scm_sym_block_special, "block-special"); |
368 | SCM_SYMBOL (scm_sym_char_special, "char-special"); | |
369 | SCM_SYMBOL (scm_sym_fifo, "fifo"); | |
370 | SCM_SYMBOL (scm_sym_sock, "socket"); | |
371 | SCM_SYMBOL (scm_sym_unknown, "unknown"); | |
372 | ||
0f2d19dd | 373 | static SCM |
1bbd0b84 | 374 | scm_stat2scm (struct stat *stat_temp) |
0f2d19dd | 375 | { |
00ffa0e7 | 376 | SCM ans = scm_c_make_vector (15, SCM_UNSPECIFIED); |
0f2d19dd | 377 | SCM *ve = SCM_VELTS (ans); |
ae5253c5 | 378 | |
0f2d19dd JB |
379 | ve[0] = scm_ulong2num ((unsigned long) stat_temp->st_dev); |
380 | ve[1] = scm_ulong2num ((unsigned long) stat_temp->st_ino); | |
381 | ve[2] = scm_ulong2num ((unsigned long) stat_temp->st_mode); | |
382 | ve[3] = scm_ulong2num ((unsigned long) stat_temp->st_nlink); | |
383 | ve[4] = scm_ulong2num ((unsigned long) stat_temp->st_uid); | |
384 | ve[5] = scm_ulong2num ((unsigned long) stat_temp->st_gid); | |
385 | #ifdef HAVE_ST_RDEV | |
386 | ve[6] = scm_ulong2num ((unsigned long) stat_temp->st_rdev); | |
387 | #else | |
388 | ve[6] = SCM_BOOL_F; | |
389 | #endif | |
390 | ve[7] = scm_ulong2num ((unsigned long) stat_temp->st_size); | |
391 | ve[8] = scm_ulong2num ((unsigned long) stat_temp->st_atime); | |
392 | ve[9] = scm_ulong2num ((unsigned long) stat_temp->st_mtime); | |
393 | ve[10] = scm_ulong2num ((unsigned long) stat_temp->st_ctime); | |
394 | #ifdef HAVE_ST_BLKSIZE | |
395 | ve[11] = scm_ulong2num ((unsigned long) stat_temp->st_blksize); | |
396 | #else | |
397 | ve[11] = scm_ulong2num (4096L); | |
398 | #endif | |
399 | #ifdef HAVE_ST_BLOCKS | |
400 | ve[12] = scm_ulong2num ((unsigned long) stat_temp->st_blocks); | |
401 | #else | |
402 | ve[12] = SCM_BOOL_F; | |
403 | #endif | |
ae5253c5 GH |
404 | { |
405 | int mode = stat_temp->st_mode; | |
406 | ||
407 | if (S_ISREG (mode)) | |
408 | ve[13] = scm_sym_regular; | |
409 | else if (S_ISDIR (mode)) | |
410 | ve[13] = scm_sym_directory; | |
f326ecf3 | 411 | #ifdef HAVE_S_ISLNK |
ae5253c5 GH |
412 | else if (S_ISLNK (mode)) |
413 | ve[13] = scm_sym_symlink; | |
f326ecf3 | 414 | #endif |
ae5253c5 GH |
415 | else if (S_ISBLK (mode)) |
416 | ve[13] = scm_sym_block_special; | |
417 | else if (S_ISCHR (mode)) | |
418 | ve[13] = scm_sym_char_special; | |
419 | else if (S_ISFIFO (mode)) | |
420 | ve[13] = scm_sym_fifo; | |
e655d034 | 421 | #ifdef S_ISSOCK |
ae5253c5 GH |
422 | else if (S_ISSOCK (mode)) |
423 | ve[13] = scm_sym_sock; | |
e655d034 | 424 | #endif |
ae5253c5 GH |
425 | else |
426 | ve[13] = scm_sym_unknown; | |
427 | ||
428 | ve[14] = SCM_MAKINUM ((~S_IFMT) & mode); | |
429 | ||
430 | /* the layout of the bits in ve[14] is intended to be portable. | |
431 | If there are systems that don't follow the usual convention, | |
432 | the following could be used: | |
433 | ||
434 | tmp = 0; | |
435 | if (S_ISUID & mode) tmp += 1; | |
436 | tmp <<= 1; | |
437 | if (S_IRGRP & mode) tmp += 1; | |
438 | tmp <<= 1; | |
439 | if (S_ISVTX & mode) tmp += 1; | |
440 | tmp <<= 1; | |
441 | if (S_IRUSR & mode) tmp += 1; | |
442 | tmp <<= 1; | |
443 | if (S_IWUSR & mode) tmp += 1; | |
444 | tmp <<= 1; | |
445 | if (S_IXUSR & mode) tmp += 1; | |
446 | tmp <<= 1; | |
447 | if (S_IWGRP & mode) tmp += 1; | |
448 | tmp <<= 1; | |
449 | if (S_IXGRP & mode) tmp += 1; | |
450 | tmp <<= 1; | |
451 | if (S_IROTH & mode) tmp += 1; | |
452 | tmp <<= 1; | |
453 | if (S_IWOTH & mode) tmp += 1; | |
454 | tmp <<= 1; | |
455 | if (S_IXOTH & mode) tmp += 1; | |
456 | ||
457 | ve[14] = SCM_MAKINUM (tmp); | |
458 | ||
459 | */ | |
460 | } | |
0f2d19dd JB |
461 | |
462 | return ans; | |
463 | } | |
464 | ||
a1ec6916 | 465 | SCM_DEFINE (scm_stat, "stat", 1, 0, 0, |
1bbd0b84 | 466 | (SCM object), |
d3818c29 MD |
467 | "Returns an object containing various information\n" |
468 | "about the file determined by @var{obj}.\n" | |
469 | "@var{obj} can be a string containing a file name or a port or integer file\n" | |
470 | "descriptor which is open on a file (in which case @code{fstat} is used\n" | |
471 | "as the underlying system call).\n\n" | |
472 | "The object returned by @code{stat} can be passed as a single parameter\n" | |
473 | "to the following procedures, all of which return integers:\n\n" | |
474 | "@table @code\n" | |
475 | "@item stat:dev\n" | |
476 | "The device containing the file.\n" | |
477 | "@item stat:ino\n" | |
478 | "The file serial number, which distinguishes this file from all other\n" | |
479 | "files on the same device.\n" | |
480 | "@item stat:mode\n" | |
481 | "The mode of the file. This includes file type information\n" | |
482 | "and the file permission bits. See @code{stat:type} and @code{stat:perms}\n" | |
483 | "below.\n" | |
484 | "@item stat:nlink\n" | |
485 | "The number of hard links to the file.\n" | |
486 | "@item stat:uid\n" | |
487 | "The user ID of the file's owner.\n" | |
488 | "@item stat:gid\n" | |
489 | "The group ID of the file.\n" | |
490 | "@item stat:rdev\n" | |
491 | "Device ID; this entry is defined only for character or block\n" | |
492 | "special files.\n" | |
493 | "@item stat:size\n" | |
494 | "The size of a regular file in bytes.\n" | |
495 | "@item stat:atime\n" | |
496 | "The last access time for the file.\n" | |
497 | "@item stat:mtime\n" | |
498 | "The last modification time for the file.\n" | |
499 | "@item stat:ctime\n" | |
500 | "The last modification time for the attributes of the file.\n" | |
501 | "@item stat:blksize\n" | |
502 | "The optimal block size for reading or writing the file, in bytes.\n" | |
503 | "@item stat:blocks\n" | |
504 | "The amount of disk space that the file occupies measured in units of\n" | |
505 | "512 byte blocks.\n" | |
506 | "@end table\n\n" | |
507 | "In addition, the following procedures return the information\n" | |
508 | "from stat:mode in a more convenient form:\n\n" | |
509 | "@table @code\n" | |
510 | "@item stat:type\n" | |
511 | "A symbol representing the type of file. Possible values are\n" | |
512 | "regular, directory, symlink, block-special, char-special,\n" | |
513 | "fifo, socket and unknown\n" | |
514 | "@item stat:perms\n" | |
515 | "An integer representing the access permission bits.\n" | |
516 | "@end table") | |
1bbd0b84 | 517 | #define FUNC_NAME s_scm_stat |
0f2d19dd | 518 | { |
6afcd3b2 GH |
519 | int rv; |
520 | int fdes; | |
0f2d19dd JB |
521 | struct stat stat_temp; |
522 | ||
1ea47048 MD |
523 | if (SCM_INUMP (object)) |
524 | SCM_SYSCALL (rv = fstat (SCM_INUM (object), &stat_temp)); | |
525 | else | |
0f2d19dd | 526 | { |
6b5a304f | 527 | SCM_VALIDATE_NIM (1,object); |
a6d9e5ab | 528 | if (SCM_STRINGP (object)) |
1ea47048 | 529 | { |
a6d9e5ab DH |
530 | SCM_STRING_COERCE_0TERMINATION_X (object); |
531 | SCM_SYSCALL (rv = stat (SCM_STRING_CHARS (object), &stat_temp)); | |
1ea47048 | 532 | } |
c0ebd8c5 | 533 | else |
0f2d19dd | 534 | { |
1ea47048 | 535 | object = SCM_COERCE_OUTPORT (object); |
c1bfcf60 | 536 | SCM_VALIDATE_OPFPORT(1,object); |
77a76b64 | 537 | fdes = SCM_FPORT_FDES (object); |
1ea47048 | 538 | SCM_SYSCALL (rv = fstat (fdes, &stat_temp)); |
0f2d19dd | 539 | } |
6afcd3b2 GH |
540 | } |
541 | if (rv == -1) | |
3d8d56df GH |
542 | { |
543 | int en = errno; | |
544 | ||
5d2d2ffc | 545 | SCM_SYSERROR_MSG ("~A: ~S", |
3d8d56df | 546 | scm_listify (scm_makfrom0str (strerror (errno)), |
6afcd3b2 | 547 | object, |
5d2d2ffc | 548 | SCM_UNDEFINED), en); |
3d8d56df | 549 | } |
02b754d3 | 550 | return scm_stat2scm (&stat_temp); |
0f2d19dd | 551 | } |
1bbd0b84 | 552 | #undef FUNC_NAME |
0f2d19dd | 553 | |
0f2d19dd JB |
554 | \f |
555 | /* {Modifying Directories} | |
556 | */ | |
557 | ||
a1ec6916 | 558 | SCM_DEFINE (scm_link, "link", 2, 0, 0, |
1bbd0b84 | 559 | (SCM oldpath, SCM newpath), |
6d36532c GH |
560 | "Creates a new name @var{newpath} in the file system for the\n" |
561 | "file named by @var{oldpath}. If @var{oldpath} is a symbolic\n" | |
562 | "link, the link may or may not be followed depending on the\n" | |
563 | "system.") | |
1bbd0b84 | 564 | #define FUNC_NAME s_scm_link |
0f2d19dd JB |
565 | { |
566 | int val; | |
02b754d3 | 567 | |
a6d9e5ab DH |
568 | SCM_VALIDATE_STRING (1, oldpath); |
569 | SCM_STRING_COERCE_0TERMINATION_X (oldpath); | |
570 | SCM_VALIDATE_STRING (2, newpath); | |
571 | SCM_STRING_COERCE_0TERMINATION_X (newpath); | |
6d36532c GH |
572 | SCM_SYSCALL (val = link (SCM_STRING_CHARS (oldpath), |
573 | SCM_STRING_CHARS (newpath))); | |
02b754d3 | 574 | if (val != 0) |
1bbd0b84 | 575 | SCM_SYSERROR; |
02b754d3 | 576 | return SCM_UNSPECIFIED; |
0f2d19dd | 577 | } |
1bbd0b84 | 578 | #undef FUNC_NAME |
0f2d19dd JB |
579 | |
580 | ||
581 | ||
a1ec6916 | 582 | SCM_DEFINE (scm_rename, "rename-file", 2, 0, 0, |
1bbd0b84 | 583 | (SCM oldname, SCM newname), |
6d36532c | 584 | "Renames the file specified by @var{oldname} to @var{newname}.\n" |
d3818c29 | 585 | "The return value is unspecified.") |
1bbd0b84 | 586 | #define FUNC_NAME s_scm_rename |
0f2d19dd JB |
587 | { |
588 | int rv; | |
a6d9e5ab DH |
589 | SCM_VALIDATE_STRING (1, oldname); |
590 | SCM_VALIDATE_STRING (2, newname); | |
591 | SCM_STRING_COERCE_0TERMINATION_X (oldname); | |
592 | SCM_STRING_COERCE_0TERMINATION_X (newname); | |
0f2d19dd | 593 | #ifdef HAVE_RENAME |
a6d9e5ab | 594 | SCM_SYSCALL (rv = rename (SCM_STRING_CHARS (oldname), SCM_STRING_CHARS (newname))); |
0f2d19dd | 595 | #else |
a6d9e5ab | 596 | SCM_SYSCALL (rv = link (SCM_STRING_CHARS (oldname), SCM_STRING_CHARS (newname))); |
02b754d3 | 597 | if (rv == 0) |
0f2d19dd | 598 | { |
a6d9e5ab | 599 | SCM_SYSCALL (rv = unlink (SCM_STRING_CHARS (oldname)));; |
02b754d3 | 600 | if (rv != 0) |
0f2d19dd | 601 | /* unlink failed. remove new name */ |
a6d9e5ab | 602 | SCM_SYSCALL (unlink (SCM_STRING_CHARS (newname))); |
0f2d19dd | 603 | } |
6afcd3b2 | 604 | #endif |
02b754d3 | 605 | if (rv != 0) |
1bbd0b84 | 606 | SCM_SYSERROR; |
02b754d3 | 607 | return SCM_UNSPECIFIED; |
0f2d19dd | 608 | } |
1bbd0b84 | 609 | #undef FUNC_NAME |
0f2d19dd JB |
610 | |
611 | ||
3b3b36dd | 612 | SCM_DEFINE (scm_delete_file, "delete-file", 1, 0, 0, |
1bbd0b84 | 613 | (SCM str), |
d3818c29 | 614 | "Deletes (or \"unlinks\") the file specified by @var{path}.") |
1bbd0b84 | 615 | #define FUNC_NAME s_scm_delete_file |
2f3ed1ba JB |
616 | { |
617 | int ans; | |
a6d9e5ab DH |
618 | SCM_VALIDATE_STRING (1, str); |
619 | SCM_STRING_COERCE_0TERMINATION_X (str); | |
620 | SCM_SYSCALL (ans = unlink (SCM_STRING_CHARS (str))); | |
2f3ed1ba | 621 | if (ans != 0) |
1bbd0b84 | 622 | SCM_SYSERROR; |
2f3ed1ba JB |
623 | return SCM_UNSPECIFIED; |
624 | } | |
1bbd0b84 | 625 | #undef FUNC_NAME |
2f3ed1ba | 626 | |
f25f761d | 627 | #ifdef HAVE_MKDIR |
a1ec6916 | 628 | SCM_DEFINE (scm_mkdir, "mkdir", 1, 1, 0, |
1bbd0b84 | 629 | (SCM path, SCM mode), |
d3818c29 MD |
630 | "Create a new directory named by @var{path}. If @var{mode} is omitted\n" |
631 | "then the permissions of the directory file are set using the current\n" | |
632 | "umask. Otherwise they are set to the decimal value specified with\n" | |
633 | "@var{mode}. The return value is unspecified.") | |
1bbd0b84 | 634 | #define FUNC_NAME s_scm_mkdir |
0f2d19dd | 635 | { |
0f2d19dd JB |
636 | int rv; |
637 | mode_t mask; | |
a6d9e5ab DH |
638 | SCM_VALIDATE_STRING (1, path); |
639 | SCM_STRING_COERCE_0TERMINATION_X (path); | |
0f2d19dd JB |
640 | if (SCM_UNBNDP (mode)) |
641 | { | |
642 | mask = umask (0); | |
643 | umask (mask); | |
a6d9e5ab | 644 | SCM_SYSCALL (rv = mkdir (SCM_STRING_CHARS (path), 0777 ^ mask)); |
0f2d19dd JB |
645 | } |
646 | else | |
647 | { | |
3b3b36dd | 648 | SCM_VALIDATE_INUM (2,mode); |
a6d9e5ab | 649 | SCM_SYSCALL (rv = mkdir (SCM_STRING_CHARS (path), SCM_INUM (mode))); |
0f2d19dd | 650 | } |
02b754d3 | 651 | if (rv != 0) |
1bbd0b84 | 652 | SCM_SYSERROR; |
02b754d3 | 653 | return SCM_UNSPECIFIED; |
0f2d19dd | 654 | } |
1bbd0b84 | 655 | #undef FUNC_NAME |
f25f761d | 656 | #endif /* HAVE_MKDIR */ |
0f2d19dd | 657 | |
f25f761d | 658 | #ifdef HAVE_RMDIR |
a1ec6916 | 659 | SCM_DEFINE (scm_rmdir, "rmdir", 1, 0, 0, |
1bbd0b84 | 660 | (SCM path), |
d3818c29 MD |
661 | "Remove the existing directory named by @var{path}. The directory must\n" |
662 | "be empty for this to succeed. The return value is unspecified.") | |
1bbd0b84 | 663 | #define FUNC_NAME s_scm_rmdir |
0f2d19dd | 664 | { |
0f2d19dd | 665 | int val; |
02b754d3 | 666 | |
a6d9e5ab DH |
667 | SCM_VALIDATE_STRING (1, path); |
668 | SCM_STRING_COERCE_0TERMINATION_X (path); | |
669 | SCM_SYSCALL (val = rmdir (SCM_STRING_CHARS (path))); | |
02b754d3 | 670 | if (val != 0) |
1bbd0b84 | 671 | SCM_SYSERROR; |
02b754d3 | 672 | return SCM_UNSPECIFIED; |
0f2d19dd | 673 | } |
1bbd0b84 | 674 | #undef FUNC_NAME |
f25f761d | 675 | #endif |
0f2d19dd JB |
676 | |
677 | \f | |
30ea841d | 678 | |
0f2d19dd JB |
679 | /* {Examining Directories} |
680 | */ | |
681 | ||
e841c3e0 | 682 | scm_bits_t scm_tc16_dir; |
0f2d19dd | 683 | |
30ea841d | 684 | |
a1ec6916 | 685 | SCM_DEFINE (scm_directory_stream_p, "directory-stream?", 1, 0, 0, |
1bbd0b84 | 686 | (SCM obj), |
d3818c29 MD |
687 | "Returns a boolean indicating whether @var{object} is a directory stream\n" |
688 | "as returned by @code{opendir}.") | |
1bbd0b84 | 689 | #define FUNC_NAME s_scm_directory_stream_p |
77242ff9 | 690 | { |
30ea841d | 691 | return SCM_BOOL (SCM_DIRP (obj)); |
77242ff9 | 692 | } |
1bbd0b84 | 693 | #undef FUNC_NAME |
77242ff9 | 694 | |
30ea841d | 695 | |
a1ec6916 | 696 | SCM_DEFINE (scm_opendir, "opendir", 1, 0, 0, |
1bbd0b84 | 697 | (SCM dirname), |
d3818c29 MD |
698 | "Open the directory specified by @var{path} and return a directory\n" |
699 | "stream.") | |
1bbd0b84 | 700 | #define FUNC_NAME s_scm_opendir |
0f2d19dd JB |
701 | { |
702 | DIR *ds; | |
a6d9e5ab DH |
703 | SCM_VALIDATE_STRING (1, dirname); |
704 | SCM_STRING_COERCE_0TERMINATION_X (dirname); | |
705 | SCM_SYSCALL (ds = opendir (SCM_STRING_CHARS (dirname))); | |
02b754d3 | 706 | if (ds == NULL) |
1bbd0b84 | 707 | SCM_SYSERROR; |
30ea841d | 708 | SCM_RETURN_NEWSMOB (scm_tc16_dir | SCM_DIR_FLAG_OPEN, ds); |
0f2d19dd | 709 | } |
1bbd0b84 | 710 | #undef FUNC_NAME |
0f2d19dd JB |
711 | |
712 | ||
a1ec6916 | 713 | SCM_DEFINE (scm_readdir, "readdir", 1, 0, 0, |
1bbd0b84 | 714 | (SCM port), |
d3818c29 MD |
715 | "Return (as a string) the next directory entry from the directory stream\n" |
716 | "@var{stream}. If there is no remaining entry to be read then the\n" | |
717 | "end of file object is returned.") | |
1bbd0b84 | 718 | #define FUNC_NAME s_scm_readdir |
0f2d19dd JB |
719 | { |
720 | struct dirent *rdent; | |
30ea841d DH |
721 | |
722 | SCM_VALIDATE_DIR (1, port); | |
723 | if (!SCM_DIR_OPEN_P (port)) | |
724 | SCM_MISC_ERROR ("Directory ~S is not open.", SCM_LIST1 (port)); | |
725 | ||
0f2d19dd | 726 | errno = 0; |
4260a7fc | 727 | SCM_SYSCALL (rdent = readdir ((DIR *) SCM_CELL_WORD_1 (port))); |
02b754d3 | 728 | if (errno != 0) |
1bbd0b84 | 729 | SCM_SYSERROR; |
30ea841d | 730 | |
02b754d3 GH |
731 | return (rdent ? scm_makfromstr (rdent->d_name, NAMLEN (rdent), 0) |
732 | : SCM_EOF_VAL); | |
0f2d19dd | 733 | } |
1bbd0b84 | 734 | #undef FUNC_NAME |
0f2d19dd JB |
735 | |
736 | ||
a1ec6916 | 737 | SCM_DEFINE (scm_rewinddir, "rewinddir", 1, 0, 0, |
1bbd0b84 | 738 | (SCM port), |
d3818c29 MD |
739 | "Reset the directory port @var{stream} so that the next call to\n" |
740 | "@code{readdir} will return the first directory entry.") | |
1bbd0b84 | 741 | #define FUNC_NAME s_scm_rewinddir |
0f2d19dd | 742 | { |
30ea841d DH |
743 | SCM_VALIDATE_DIR (1, port); |
744 | if (!SCM_DIR_OPEN_P (port)) | |
745 | SCM_MISC_ERROR ("Directory ~S is not open.", SCM_LIST1 (port)); | |
746 | ||
4260a7fc | 747 | rewinddir ((DIR *) SCM_CELL_WORD_1 (port)); |
30ea841d | 748 | |
0f2d19dd JB |
749 | return SCM_UNSPECIFIED; |
750 | } | |
1bbd0b84 | 751 | #undef FUNC_NAME |
0f2d19dd JB |
752 | |
753 | ||
a1ec6916 | 754 | SCM_DEFINE (scm_closedir, "closedir", 1, 0, 0, |
1bbd0b84 | 755 | (SCM port), |
d3818c29 MD |
756 | "Close the directory stream @var{stream}.\n" |
757 | "The return value is unspecified.") | |
1bbd0b84 | 758 | #define FUNC_NAME s_scm_closedir |
0f2d19dd | 759 | { |
30ea841d | 760 | SCM_VALIDATE_DIR (1, port); |
02b754d3 | 761 | |
30ea841d | 762 | if (SCM_DIR_OPEN_P (port)) |
0f2d19dd | 763 | { |
30ea841d DH |
764 | int sts; |
765 | ||
766 | SCM_SYSCALL (sts = closedir ((DIR *) SCM_CELL_WORD_1 (port))); | |
767 | if (sts != 0) | |
768 | SCM_SYSERROR; | |
769 | ||
770 | SCM_SET_CELL_WORD_0 (port, scm_tc16_dir); | |
0f2d19dd | 771 | } |
30ea841d | 772 | |
02b754d3 | 773 | return SCM_UNSPECIFIED; |
0f2d19dd | 774 | } |
1bbd0b84 | 775 | #undef FUNC_NAME |
0f2d19dd JB |
776 | |
777 | ||
0f2d19dd | 778 | static int |
f8b16091 | 779 | scm_dir_print (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 780 | { |
f8b16091 | 781 | scm_puts ("#<", port); |
30ea841d | 782 | if (!SCM_DIR_OPEN_P (exp)) |
f8b16091 | 783 | scm_puts ("closed: ", port); |
0d03da62 | 784 | scm_puts ("directory stream ", port); |
4260a7fc | 785 | scm_intprint (SCM_CELL_WORD_1 (exp), 16, port); |
f8b16091 | 786 | scm_putc ('>', port); |
0f2d19dd JB |
787 | return 1; |
788 | } | |
789 | ||
1cc91f1b | 790 | |
0f2d19dd | 791 | static scm_sizet |
1bbd0b84 | 792 | scm_dir_free (SCM p) |
0f2d19dd | 793 | { |
30ea841d | 794 | if (SCM_DIR_OPEN_P (p)) |
4260a7fc | 795 | closedir ((DIR *) SCM_CELL_WORD_1 (p)); |
0f2d19dd JB |
796 | return 0; |
797 | } | |
798 | ||
0f2d19dd JB |
799 | \f |
800 | /* {Navigating Directories} | |
801 | */ | |
802 | ||
803 | ||
a1ec6916 | 804 | SCM_DEFINE (scm_chdir, "chdir", 1, 0, 0, |
1bbd0b84 | 805 | (SCM str), |
d3818c29 MD |
806 | "Change the current working directory to @var{path}.\n" |
807 | "The return value is unspecified.") | |
1bbd0b84 | 808 | #define FUNC_NAME s_scm_chdir |
0f2d19dd JB |
809 | { |
810 | int ans; | |
02b754d3 | 811 | |
a6d9e5ab DH |
812 | SCM_VALIDATE_STRING (1, str); |
813 | SCM_STRING_COERCE_0TERMINATION_X (str); | |
814 | SCM_SYSCALL (ans = chdir (SCM_STRING_CHARS (str))); | |
02b754d3 | 815 | if (ans != 0) |
1bbd0b84 | 816 | SCM_SYSERROR; |
02b754d3 | 817 | return SCM_UNSPECIFIED; |
0f2d19dd | 818 | } |
1bbd0b84 | 819 | #undef FUNC_NAME |
0f2d19dd | 820 | |
f25f761d | 821 | #ifdef HAVE_GETCWD |
a1ec6916 | 822 | SCM_DEFINE (scm_getcwd, "getcwd", 0, 0, 0, |
1bbd0b84 | 823 | (), |
d3818c29 | 824 | "Returns the name of the current working directory.") |
1bbd0b84 | 825 | #define FUNC_NAME s_scm_getcwd |
0f2d19dd | 826 | { |
0f2d19dd | 827 | char *rv; |
0f2d19dd JB |
828 | scm_sizet size = 100; |
829 | char *wd; | |
830 | SCM result; | |
831 | ||
1bbd0b84 | 832 | wd = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd JB |
833 | while ((rv = getcwd (wd, size)) == 0 && errno == ERANGE) |
834 | { | |
835 | scm_must_free (wd); | |
836 | size *= 2; | |
1bbd0b84 | 837 | wd = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd | 838 | } |
02b754d3 | 839 | if (rv == 0) |
1bbd0b84 | 840 | SCM_SYSERROR; |
02b754d3 | 841 | result = scm_makfromstr (wd, strlen (wd), 0); |
0f2d19dd | 842 | scm_must_free (wd); |
0f2d19dd | 843 | return result; |
0f2d19dd | 844 | } |
1bbd0b84 | 845 | #undef FUNC_NAME |
f25f761d | 846 | #endif /* HAVE_GETCWD */ |
0f2d19dd JB |
847 | |
848 | \f | |
849 | ||
28d77376 GH |
850 | #ifdef HAVE_SELECT |
851 | ||
852 | /* check that element is a port or file descriptor. if it's a port | |
853 | and its buffer is ready for use, add it to the ports_ready list. | |
854 | otherwise add its file descriptor to *set. the type of list can be | |
855 | determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes, | |
856 | SCM_ARG3 for excepts. */ | |
cafc12ff | 857 | static int |
28d77376 | 858 | set_element (SELECT_TYPE *set, SCM *ports_ready, SCM element, int pos) |
a48a89bc | 859 | { |
cafc12ff | 860 | int fd; |
d831b039 | 861 | |
28d77376 GH |
862 | if (SCM_INUMP (element)) |
863 | { | |
864 | fd = SCM_INUM (element); | |
865 | } | |
866 | else | |
867 | { | |
868 | int use_buf = 0; | |
869 | ||
870 | element = SCM_COERCE_OUTPORT (element); | |
871 | SCM_ASSERT (SCM_OPFPORTP (element), element, pos, "select"); | |
872 | if (pos == SCM_ARG1) | |
873 | { | |
874 | /* check whether port has buffered input. */ | |
875 | scm_port *pt = SCM_PTAB_ENTRY (element); | |
876 | ||
877 | if (pt->read_pos < pt->read_end) | |
878 | use_buf = 1; | |
879 | } | |
880 | else if (pos == SCM_ARG2) | |
881 | { | |
882 | /* check whether port's output buffer has room. */ | |
883 | scm_port *pt = SCM_PTAB_ENTRY (element); | |
884 | ||
885 | /* > 1 since writing the last byte in the buffer causes flush. */ | |
886 | if (pt->write_end - pt->write_pos > 1) | |
887 | use_buf = 1; | |
888 | } | |
889 | fd = use_buf ? -1 : SCM_FPORT_FDES (element); | |
890 | } | |
891 | if (fd == -1) | |
892 | *ports_ready = scm_cons (element, *ports_ready); | |
893 | else | |
894 | FD_SET (fd, set); | |
cafc12ff | 895 | return fd; |
a48a89bc | 896 | } |
1cc91f1b | 897 | |
28d77376 GH |
898 | /* check list_or_vec, a list or vector of ports or file descriptors, |
899 | adding each member to either the ports_ready list (if it's a port | |
900 | with a usable buffer) or to *set. the kind of list_or_vec can be | |
901 | determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes, | |
902 | SCM_ARG3 for excepts. */ | |
cafc12ff | 903 | static int |
28d77376 | 904 | fill_select_type (SELECT_TYPE *set, SCM *ports_ready, SCM list_or_vec, int pos) |
0f2d19dd | 905 | { |
28d77376 GH |
906 | int max_fd = 0; |
907 | ||
908 | if (SCM_VECTORP (list_or_vec)) | |
0f2d19dd | 909 | { |
9fd38a3d | 910 | int i = SCM_VECTOR_LENGTH (list_or_vec); |
28d77376 | 911 | SCM *ve = SCM_VELTS (list_or_vec); |
a48a89bc | 912 | |
28d77376 | 913 | while (--i >= 0) |
a48a89bc | 914 | { |
28d77376 GH |
915 | int fd = set_element (set, ports_ready, ve[i], pos); |
916 | ||
cafc12ff MD |
917 | if (fd > max_fd) |
918 | max_fd = fd; | |
a48a89bc GH |
919 | } |
920 | } | |
921 | else | |
922 | { | |
4260a7fc | 923 | while (!SCM_NULLP (list_or_vec)) |
a48a89bc | 924 | { |
28d77376 GH |
925 | int fd = set_element (set, ports_ready, SCM_CAR (list_or_vec), pos); |
926 | ||
cafc12ff MD |
927 | if (fd > max_fd) |
928 | max_fd = fd; | |
28d77376 | 929 | list_or_vec = SCM_CDR (list_or_vec); |
a48a89bc | 930 | } |
0f2d19dd | 931 | } |
cafc12ff MD |
932 | |
933 | return max_fd; | |
0f2d19dd JB |
934 | } |
935 | ||
28d77376 GH |
936 | /* if element (a file descriptor or port) appears in *set, cons it to |
937 | list. return list. */ | |
a48a89bc GH |
938 | static SCM |
939 | get_element (SELECT_TYPE *set, SCM element, SCM list) | |
940 | { | |
28d77376 GH |
941 | int fd; |
942 | ||
943 | if (SCM_INUMP (element)) | |
a48a89bc | 944 | { |
28d77376 | 945 | fd = SCM_INUM (element); |
a48a89bc | 946 | } |
28d77376 | 947 | else |
a48a89bc | 948 | { |
28d77376 | 949 | fd = SCM_FPORT_FDES (SCM_COERCE_OUTPORT (element)); |
a48a89bc | 950 | } |
28d77376 GH |
951 | if (FD_ISSET (fd, set)) |
952 | list = scm_cons (element, list); | |
a48a89bc GH |
953 | return list; |
954 | } | |
1cc91f1b | 955 | |
28d77376 GH |
956 | /* construct component of scm_select return value. |
957 | set: pointer to set of file descriptors found by select to be ready | |
958 | ports_ready: ports ready due to buffering | |
959 | list_or_vec: original list/vector handed to scm_select. | |
960 | the return value is a list/vector of ready ports/file descriptors. | |
961 | works by finding the objects in list which correspond to members of | |
962 | *set and appending them to ports_ready. result is converted to a | |
963 | vector if list_or_vec is a vector. */ | |
0f2d19dd | 964 | static SCM |
28d77376 | 965 | retrieve_select_type (SELECT_TYPE *set, SCM ports_ready, SCM list_or_vec) |
0f2d19dd | 966 | { |
28d77376 | 967 | SCM answer_list = ports_ready; |
a48a89bc | 968 | |
28d77376 | 969 | if (SCM_VECTORP (list_or_vec)) |
0f2d19dd | 970 | { |
9fd38a3d | 971 | int i = SCM_VECTOR_LENGTH (list_or_vec); |
28d77376 | 972 | SCM *ve = SCM_VELTS (list_or_vec); |
a48a89bc | 973 | |
28d77376 | 974 | while (--i >= 0) |
0f2d19dd | 975 | { |
28d77376 | 976 | answer_list = get_element (set, ve[i], answer_list); |
0f2d19dd | 977 | } |
a48a89bc GH |
978 | return scm_vector (answer_list); |
979 | } | |
980 | else | |
981 | { | |
28d77376 | 982 | /* list_or_vec must be a list. */ |
4260a7fc | 983 | while (!SCM_NULLP (list_or_vec)) |
0f2d19dd | 984 | { |
28d77376 GH |
985 | answer_list = get_element (set, SCM_CAR (list_or_vec), answer_list); |
986 | list_or_vec = SCM_CDR (list_or_vec); | |
0f2d19dd | 987 | } |
a48a89bc | 988 | return answer_list; |
0f2d19dd | 989 | } |
0f2d19dd JB |
990 | } |
991 | ||
1bbd0b84 | 992 | /* Static helper functions above refer to s_scm_select directly as s_select */ |
a1ec6916 | 993 | SCM_DEFINE (scm_select, "select", 3, 2, 0, |
1bbd0b84 | 994 | (SCM reads, SCM writes, SCM excepts, SCM secs, SCM usecs), |
28d77376 GH |
995 | "This procedure has a variety of uses: waiting for the ability\n" |
996 | "to provide input, accept output, or the existance of\n" | |
997 | "exceptional conditions on a collection of ports or file\n" | |
998 | "descriptors, or waiting for a timeout to occur.\n" | |
999 | "It also returns if interrupted by a signal.\n\n" | |
1000 | "@var{reads}, @var{writes} and @var{excepts} can be lists or\n" | |
1001 | "vectors, with each member a port or a file descriptor.\n" | |
1002 | "The value returned is a list of three corresponding\n" | |
1003 | "lists or vectors containing only the members which meet the\n" | |
1004 | "specified requirement. The ability of port buffers to\n" | |
1005 | "provide input or accept output is taken into account.\n" | |
1006 | "Ordering of the input lists or vectors is not preserved.\n\n" | |
1007 | "The optional arguments @var{secs} and @var{usecs} specify the\n" | |
1008 | "timeout. Either @var{secs} can be specified alone, as\n" | |
1009 | "either an integer or a real number, or both @var{secs} and\n" | |
1010 | "@var{usecs} can be specified as integers, in which case\n" | |
1011 | "@var{usecs} is an additional timeout expressed in\n" | |
1012 | "microseconds. If @var{secs} is omitted or is @code{#f} then\n" | |
1013 | "select will wait for as long as it takes for one of the other\n" | |
1014 | "conditions to be satisfied.\n\n" | |
1015 | "The scsh version of @code{select} differs as follows:\n" | |
1016 | "Only vectors are accepted for the first three arguments.\n" | |
1017 | "The @var{usecs} argument is not supported.\n" | |
1018 | "Multiple values are returned instead of a list.\n" | |
1019 | "Duplicates in the input vectors appear only once in output.\n" | |
1020 | "An additional @code{select!} interface is provided.\n" | |
1021 | ) | |
1bbd0b84 | 1022 | #define FUNC_NAME s_scm_select |
0f2d19dd | 1023 | { |
0f2d19dd | 1024 | struct timeval timeout; |
28d77376 | 1025 | struct timeval * time_ptr; |
0f2d19dd JB |
1026 | SELECT_TYPE read_set; |
1027 | SELECT_TYPE write_set; | |
1028 | SELECT_TYPE except_set; | |
28d77376 GH |
1029 | int read_count; |
1030 | int write_count; | |
1031 | int except_count; | |
1032 | /* these lists accumulate ports which are ready due to buffering. | |
1033 | their file descriptors don't need to be added to the select sets. */ | |
1034 | SCM read_ports_ready = SCM_EOL; | |
1035 | SCM write_ports_ready = SCM_EOL; | |
1036 | int max_fd; | |
1037 | ||
1038 | if (SCM_VECTORP (reads)) | |
1039 | { | |
9fd38a3d | 1040 | read_count = SCM_VECTOR_LENGTH (reads); |
28d77376 GH |
1041 | } |
1042 | else | |
1043 | { | |
1044 | read_count = scm_ilength (reads); | |
1045 | SCM_ASSERT (read_count >= 0, reads, SCM_ARG1, FUNC_NAME); | |
1046 | } | |
1047 | if (SCM_VECTORP (writes)) | |
1048 | { | |
9fd38a3d | 1049 | write_count = SCM_VECTOR_LENGTH (writes); |
28d77376 GH |
1050 | } |
1051 | else | |
1052 | { | |
1053 | write_count = scm_ilength (writes); | |
1054 | SCM_ASSERT (write_count >= 0, writes, SCM_ARG2, FUNC_NAME); | |
1055 | } | |
1056 | if (SCM_VECTORP (excepts)) | |
1057 | { | |
9fd38a3d | 1058 | except_count = SCM_VECTOR_LENGTH (excepts); |
28d77376 GH |
1059 | } |
1060 | else | |
1061 | { | |
1062 | except_count = scm_ilength (excepts); | |
1063 | SCM_ASSERT (except_count >= 0, excepts, SCM_ARG3, FUNC_NAME); | |
1064 | } | |
0f2d19dd JB |
1065 | |
1066 | FD_ZERO (&read_set); | |
1067 | FD_ZERO (&write_set); | |
1068 | FD_ZERO (&except_set); | |
1069 | ||
28d77376 GH |
1070 | max_fd = fill_select_type (&read_set, &read_ports_ready, reads, SCM_ARG1); |
1071 | ||
1072 | { | |
1073 | int write_max = fill_select_type (&write_set, &write_ports_ready, | |
1074 | writes, SCM_ARG2); | |
1075 | int except_max = fill_select_type (&except_set, NULL, | |
1076 | excepts, SCM_ARG3); | |
1077 | ||
1078 | if (write_max > max_fd) | |
1079 | max_fd = write_max; | |
1080 | if (except_max > max_fd) | |
1081 | max_fd = except_max; | |
1082 | } | |
0f2d19dd | 1083 | |
ae1b098b GH |
1084 | /* if there's a port with a ready buffer, don't block, just |
1085 | check for ready file descriptors. */ | |
4260a7fc | 1086 | if (!SCM_NULLP (read_ports_ready) || !SCM_NULLP (write_ports_ready)) |
ae1b098b GH |
1087 | { |
1088 | timeout.tv_sec = 0; | |
1089 | timeout.tv_usec = 0; | |
1090 | time_ptr = &timeout; | |
1091 | } | |
1092 | else if (SCM_UNBNDP (secs) || SCM_FALSEP (secs)) | |
28d77376 | 1093 | time_ptr = 0; |
0f2d19dd JB |
1094 | else |
1095 | { | |
ae1b098b | 1096 | if (SCM_INUMP (secs)) |
a48a89bc GH |
1097 | { |
1098 | timeout.tv_sec = SCM_INUM (secs); | |
1099 | if (SCM_UNBNDP (usecs)) | |
1100 | timeout.tv_usec = 0; | |
1101 | else | |
1102 | { | |
3b3b36dd | 1103 | SCM_VALIDATE_INUM (5,usecs); |
a48a89bc GH |
1104 | timeout.tv_usec = SCM_INUM (usecs); |
1105 | } | |
1106 | } | |
0f2d19dd | 1107 | else |
a48a89bc | 1108 | { |
1bbd0b84 | 1109 | double fl = scm_num2dbl (secs, FUNC_NAME); |
a48a89bc GH |
1110 | |
1111 | if (!SCM_UNBNDP (usecs)) | |
c1bfcf60 | 1112 | SCM_WRONG_TYPE_ARG (4, secs); |
a48a89bc | 1113 | if (fl > LONG_MAX) |
c1bfcf60 | 1114 | SCM_OUT_OF_RANGE (4, secs); |
a48a89bc GH |
1115 | timeout.tv_sec = (long) fl; |
1116 | timeout.tv_usec = (long) ((fl - timeout.tv_sec) * 1000000); | |
1117 | } | |
28d77376 | 1118 | time_ptr = &timeout; |
0f2d19dd JB |
1119 | } |
1120 | ||
28d77376 | 1121 | { |
44e8413c | 1122 | #ifdef GUILE_ISELECT |
28d77376 GH |
1123 | int rv = scm_internal_select (max_fd + 1, |
1124 | &read_set, &write_set, &except_set, | |
1125 | time_ptr); | |
44e8413c | 1126 | #else |
28d77376 GH |
1127 | int rv = select (max_fd + 1, |
1128 | &read_set, &write_set, &except_set, time_ptr); | |
44e8413c | 1129 | #endif |
28d77376 GH |
1130 | if (rv < 0) |
1131 | SCM_SYSERROR; | |
1132 | } | |
1133 | return scm_listify (retrieve_select_type (&read_set, read_ports_ready, | |
1134 | reads), | |
1135 | retrieve_select_type (&write_set, write_ports_ready, | |
1136 | writes), | |
1137 | retrieve_select_type (&except_set, SCM_EOL, excepts), | |
02b754d3 | 1138 | SCM_UNDEFINED); |
0f2d19dd | 1139 | } |
1bbd0b84 | 1140 | #undef FUNC_NAME |
f25f761d | 1141 | #endif /* HAVE_SELECT */ |
0f2d19dd JB |
1142 | |
1143 | \f | |
4c1feaa5 | 1144 | |
af45e3b0 | 1145 | SCM_DEFINE (scm_fcntl, "fcntl", 2, 1, 0, |
1bbd0b84 | 1146 | (SCM object, SCM cmd, SCM value), |
d3818c29 MD |
1147 | "Apply @var{command} to the specified file descriptor or the underlying\n" |
1148 | "file descriptor of the specified port. @var{value} is an optional\n" | |
1149 | "integer argument.\n\n" | |
1150 | "Values for @var{command} are:\n\n" | |
1151 | "@table @code\n" | |
1152 | "@item F_DUPFD\n" | |
1153 | "Duplicate a file descriptor\n" | |
1154 | "@item F_GETFD\n" | |
1155 | "Get flags associated with the file descriptor.\n" | |
1156 | "@item F_SETFD\n" | |
1157 | "Set flags associated with the file descriptor to @var{value}.\n" | |
1158 | "@item F_GETFL\n" | |
1159 | "Get flags associated with the open file.\n" | |
1160 | "@item F_SETFL\n" | |
1161 | "Set flags associated with the open file to @var{value}\n" | |
1162 | "@item F_GETOWN\n" | |
1163 | "Get the process ID of a socket's owner, for @code{SIGIO} signals.\n" | |
1164 | "@item F_SETOWN\n" | |
1165 | "Set the process that owns a socket to @var{value}, for @code{SIGIO} signals.\n" | |
1166 | "@item FD_CLOEXEC\n" | |
55892d87 NJ |
1167 | "The value used to indicate the \"close on exec\" flag with @code{F_GETFL} or\n" |
1168 | "@code{F_SETFL}.\n" | |
a3c8b9fc | 1169 | "@end table") |
1bbd0b84 | 1170 | #define FUNC_NAME s_scm_fcntl |
4c1feaa5 JB |
1171 | { |
1172 | int rv; | |
6afcd3b2 GH |
1173 | int fdes; |
1174 | int ivalue; | |
4c1feaa5 | 1175 | |
78446828 MV |
1176 | object = SCM_COERCE_OUTPORT (object); |
1177 | ||
3b3b36dd | 1178 | SCM_VALIDATE_INUM (2,cmd); |
0c95b57d | 1179 | if (SCM_OPFPORTP (object)) |
77a76b64 | 1180 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
1181 | else |
1182 | { | |
3b3b36dd | 1183 | SCM_VALIDATE_INUM (1,object); |
6afcd3b2 GH |
1184 | fdes = SCM_INUM (object); |
1185 | } | |
af45e3b0 DH |
1186 | |
1187 | if (SCM_UNBNDP (value)) { | |
6afcd3b2 | 1188 | ivalue = 0; |
af45e3b0 DH |
1189 | } else { |
1190 | SCM_VALIDATE_INUM_COPY (SCM_ARG3, value, ivalue); | |
1191 | } | |
1192 | ||
77a76b64 JB |
1193 | SCM_SYSCALL (rv = fcntl (fdes, SCM_INUM (cmd), ivalue)); |
1194 | if (rv == -1) | |
1bbd0b84 | 1195 | SCM_SYSERROR; |
4c1feaa5 JB |
1196 | return SCM_MAKINUM (rv); |
1197 | } | |
1bbd0b84 | 1198 | #undef FUNC_NAME |
6afcd3b2 | 1199 | |
a1ec6916 | 1200 | SCM_DEFINE (scm_fsync, "fsync", 1, 0, 0, |
1bbd0b84 | 1201 | (SCM object), |
d3818c29 MD |
1202 | "Copies any unwritten data for the specified output file descriptor to disk.\n" |
1203 | "If @var{port/fd} is a port, its buffer is flushed before the underlying\n" | |
1204 | "file descriptor is fsync'd.\n" | |
1205 | "The return value is unspecified.") | |
1bbd0b84 | 1206 | #define FUNC_NAME s_scm_fsync |
6afcd3b2 GH |
1207 | { |
1208 | int fdes; | |
1209 | ||
78446828 MV |
1210 | object = SCM_COERCE_OUTPORT (object); |
1211 | ||
0c95b57d | 1212 | if (SCM_OPFPORTP (object)) |
6afcd3b2 | 1213 | { |
affc96b5 | 1214 | scm_flush (object); |
77a76b64 | 1215 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
1216 | } |
1217 | else | |
1218 | { | |
3b3b36dd | 1219 | SCM_VALIDATE_INUM (1,object); |
6afcd3b2 GH |
1220 | fdes = SCM_INUM (object); |
1221 | } | |
1222 | if (fsync (fdes) == -1) | |
1bbd0b84 | 1223 | SCM_SYSERROR; |
6afcd3b2 GH |
1224 | return SCM_UNSPECIFIED; |
1225 | } | |
1bbd0b84 | 1226 | #undef FUNC_NAME |
0f2d19dd | 1227 | |
f25f761d | 1228 | #ifdef HAVE_SYMLINK |
a1ec6916 | 1229 | SCM_DEFINE (scm_symlink, "symlink", 2, 0, 0, |
1bbd0b84 | 1230 | (SCM oldpath, SCM newpath), |
d3818c29 MD |
1231 | "Create a symbolic link named @var{path-to} with the value (i.e., pointing to)\n" |
1232 | "@var{path-from}. The return value is unspecified.") | |
1bbd0b84 | 1233 | #define FUNC_NAME s_scm_symlink |
0f2d19dd | 1234 | { |
0f2d19dd | 1235 | int val; |
02b754d3 | 1236 | |
a6d9e5ab DH |
1237 | SCM_VALIDATE_STRING (1, oldpath); |
1238 | SCM_VALIDATE_STRING (2, newpath); | |
1239 | SCM_STRING_COERCE_0TERMINATION_X (oldpath); | |
1240 | SCM_STRING_COERCE_0TERMINATION_X (newpath); | |
1241 | SCM_SYSCALL (val = symlink (SCM_STRING_CHARS (oldpath), SCM_STRING_CHARS (newpath))); | |
02b754d3 | 1242 | if (val != 0) |
1bbd0b84 | 1243 | SCM_SYSERROR; |
02b754d3 | 1244 | return SCM_UNSPECIFIED; |
0f2d19dd | 1245 | } |
1bbd0b84 | 1246 | #undef FUNC_NAME |
f25f761d | 1247 | #endif /* HAVE_SYMLINK */ |
0f2d19dd | 1248 | |
f25f761d | 1249 | #ifdef HAVE_READLINK |
a1ec6916 | 1250 | SCM_DEFINE (scm_readlink, "readlink", 1, 0, 0, |
1bbd0b84 | 1251 | (SCM path), |
d3818c29 MD |
1252 | "Returns the value of the symbolic link named by\n" |
1253 | "@var{path} (a string), i.e., the\n" | |
1254 | "file that the link points to.") | |
1bbd0b84 | 1255 | #define FUNC_NAME s_scm_readlink |
0f2d19dd | 1256 | { |
6a738a25 JB |
1257 | int rv; |
1258 | int size = 100; | |
0f2d19dd JB |
1259 | char *buf; |
1260 | SCM result; | |
a6d9e5ab DH |
1261 | SCM_VALIDATE_STRING (1, path); |
1262 | SCM_STRING_COERCE_0TERMINATION_X (path); | |
1bbd0b84 | 1263 | buf = scm_must_malloc (size, FUNC_NAME); |
a6d9e5ab | 1264 | while ((rv = readlink (SCM_STRING_CHARS (path), buf, size)) == size) |
0f2d19dd JB |
1265 | { |
1266 | scm_must_free (buf); | |
1267 | size *= 2; | |
1bbd0b84 | 1268 | buf = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd | 1269 | } |
02b754d3 | 1270 | if (rv == -1) |
1bbd0b84 | 1271 | SCM_SYSERROR; |
02b754d3 | 1272 | result = scm_makfromstr (buf, rv, 0); |
0f2d19dd | 1273 | scm_must_free (buf); |
0f2d19dd | 1274 | return result; |
0f2d19dd | 1275 | } |
1bbd0b84 | 1276 | #undef FUNC_NAME |
f25f761d | 1277 | #endif /* HAVE_READLINK */ |
0f2d19dd | 1278 | |
f25f761d | 1279 | #ifdef HAVE_LSTAT |
a1ec6916 | 1280 | SCM_DEFINE (scm_lstat, "lstat", 1, 0, 0, |
1bbd0b84 | 1281 | (SCM str), |
d3818c29 MD |
1282 | "Similar to @code{stat}, but does not follow symbolic links, i.e.,\n" |
1283 | "it will return information about a symbolic link itself, not the \n" | |
1284 | "file it points to. @var{path} must be a string.") | |
1bbd0b84 | 1285 | #define FUNC_NAME s_scm_lstat |
0f2d19dd | 1286 | { |
02b754d3 | 1287 | int rv; |
0f2d19dd | 1288 | struct stat stat_temp; |
02b754d3 | 1289 | |
a6d9e5ab DH |
1290 | SCM_VALIDATE_STRING (1, str); |
1291 | SCM_STRING_COERCE_0TERMINATION_X (str); | |
1292 | SCM_SYSCALL (rv = lstat (SCM_STRING_CHARS (str), &stat_temp)); | |
02b754d3 | 1293 | if (rv != 0) |
3d8d56df GH |
1294 | { |
1295 | int en = errno; | |
1296 | ||
5d2d2ffc | 1297 | SCM_SYSERROR_MSG ("~A: ~S", |
3d8d56df GH |
1298 | scm_listify (scm_makfrom0str (strerror (errno)), |
1299 | str, | |
5d2d2ffc | 1300 | SCM_UNDEFINED), en); |
3d8d56df | 1301 | } |
02b754d3 | 1302 | return scm_stat2scm(&stat_temp); |
0f2d19dd | 1303 | } |
1bbd0b84 | 1304 | #undef FUNC_NAME |
f25f761d | 1305 | #endif /* HAVE_LSTAT */ |
0f2d19dd | 1306 | |
a1ec6916 | 1307 | SCM_DEFINE (scm_copy_file, "copy-file", 2, 0, 0, |
1bbd0b84 | 1308 | (SCM oldfile, SCM newfile), |
d3818c29 MD |
1309 | "Copy the file specified by @var{path-from} to @var{path-to}.\n" |
1310 | "The return value is unspecified.") | |
1bbd0b84 | 1311 | #define FUNC_NAME s_scm_copy_file |
0f2d19dd JB |
1312 | { |
1313 | int oldfd, newfd; | |
1314 | int n; | |
77a76b64 | 1315 | char buf[BUFSIZ]; |
0f2d19dd JB |
1316 | struct stat oldstat; |
1317 | ||
a6d9e5ab DH |
1318 | SCM_VALIDATE_STRING (1, oldfile); |
1319 | SCM_STRING_COERCE_0TERMINATION_X (oldfile); | |
1320 | SCM_VALIDATE_STRING (2, newfile); | |
1321 | SCM_STRING_COERCE_0TERMINATION_X (newfile); | |
1322 | if (stat (SCM_STRING_CHARS (oldfile), &oldstat) == -1) | |
1bbd0b84 | 1323 | SCM_SYSERROR; |
a6d9e5ab | 1324 | oldfd = open (SCM_STRING_CHARS (oldfile), O_RDONLY); |
0f2d19dd | 1325 | if (oldfd == -1) |
1bbd0b84 | 1326 | SCM_SYSERROR; |
02b754d3 GH |
1327 | |
1328 | /* use POSIX flags instead of 07777?. */ | |
a6d9e5ab | 1329 | newfd = open (SCM_STRING_CHARS (newfile), O_WRONLY | O_CREAT | O_TRUNC, |
0f2d19dd JB |
1330 | oldstat.st_mode & 07777); |
1331 | if (newfd == -1) | |
1bbd0b84 | 1332 | SCM_SYSERROR; |
02b754d3 | 1333 | |
0f2d19dd JB |
1334 | while ((n = read (oldfd, buf, sizeof buf)) > 0) |
1335 | if (write (newfd, buf, n) != n) | |
1336 | { | |
1337 | close (oldfd); | |
1338 | close (newfd); | |
1bbd0b84 | 1339 | SCM_SYSERROR; |
0f2d19dd JB |
1340 | } |
1341 | close (oldfd); | |
1342 | if (close (newfd) == -1) | |
1bbd0b84 | 1343 | SCM_SYSERROR; |
02b754d3 | 1344 | return SCM_UNSPECIFIED; |
0f2d19dd | 1345 | } |
1bbd0b84 | 1346 | #undef FUNC_NAME |
0f2d19dd JB |
1347 | |
1348 | \f | |
6a738a25 JB |
1349 | /* Filename manipulation */ |
1350 | ||
1351 | SCM scm_dot_string; | |
1352 | ||
a1ec6916 | 1353 | SCM_DEFINE (scm_dirname, "dirname", 1, 0, 0, |
1bbd0b84 | 1354 | (SCM filename), |
fa6a543f MG |
1355 | "Return the directory name component of the file name\n" |
1356 | "@var{filename}. If @var{filename} does not contain a directory\n" | |
1357 | "component, @code{.} is returned.") | |
1bbd0b84 | 1358 | #define FUNC_NAME s_scm_dirname |
6a738a25 JB |
1359 | { |
1360 | char *s; | |
9fd38a3d DH |
1361 | long int i; |
1362 | unsigned long int len; | |
1363 | ||
1364 | SCM_VALIDATE_STRING (1,filename); | |
1365 | ||
34f0f2b8 | 1366 | s = SCM_STRING_CHARS (filename); |
9fd38a3d DH |
1367 | len = SCM_STRING_LENGTH (filename); |
1368 | ||
6a738a25 JB |
1369 | i = len - 1; |
1370 | while (i >= 0 && s[i] == '/') --i; | |
1371 | while (i >= 0 && s[i] != '/') --i; | |
1372 | while (i >= 0 && s[i] == '/') --i; | |
1373 | if (i < 0) | |
1374 | { | |
1375 | if (len > 0 && s[0] == '/') | |
d1ca2c64 | 1376 | return scm_substring (filename, SCM_INUM0, SCM_MAKINUM (1)); |
6a738a25 JB |
1377 | else |
1378 | return scm_dot_string; | |
1379 | } | |
1380 | else | |
d1ca2c64 | 1381 | return scm_substring (filename, SCM_INUM0, SCM_MAKINUM (i + 1)); |
6a738a25 | 1382 | } |
1bbd0b84 | 1383 | #undef FUNC_NAME |
6a738a25 | 1384 | |
a1ec6916 | 1385 | SCM_DEFINE (scm_basename, "basename", 1, 1, 0, |
1bbd0b84 | 1386 | (SCM filename, SCM suffix), |
fa6a543f MG |
1387 | "Return the base name of the file name @var{filename}. The\n" |
1388 | "base name is the file name without any directory components.\n" | |
1389 | "If @var{suffix} is privided, and is equal to the end of\n" | |
1390 | "@var{basename}, it is removed also.") | |
1bbd0b84 | 1391 | #define FUNC_NAME s_scm_basename |
6a738a25 JB |
1392 | { |
1393 | char *f, *s = 0; | |
1394 | int i, j, len, end; | |
9fd38a3d DH |
1395 | |
1396 | SCM_VALIDATE_STRING (1,filename); | |
34f0f2b8 | 1397 | f = SCM_STRING_CHARS (filename); |
9fd38a3d DH |
1398 | len = SCM_STRING_LENGTH (filename); |
1399 | ||
6a738a25 JB |
1400 | if (SCM_UNBNDP (suffix)) |
1401 | j = -1; | |
1402 | else | |
1403 | { | |
9fd38a3d | 1404 | SCM_VALIDATE_STRING (2, suffix); |
34f0f2b8 | 1405 | s = SCM_STRING_CHARS (suffix); |
9fd38a3d | 1406 | j = SCM_STRING_LENGTH (suffix) - 1; |
6a738a25 | 1407 | } |
6a738a25 JB |
1408 | i = len - 1; |
1409 | while (i >= 0 && f[i] == '/') --i; | |
1410 | end = i; | |
1411 | while (i >= 0 && j >= 0 && f[i] == s[j]) --i, --j; | |
1412 | if (j == -1) | |
1413 | end = i; | |
1414 | while (i >= 0 && f[i] != '/') --i; | |
1415 | if (i == end) | |
1416 | { | |
1417 | if (len > 0 && f[0] == '/') | |
d1ca2c64 | 1418 | return scm_substring (filename, SCM_INUM0, SCM_MAKINUM (1)); |
6a738a25 JB |
1419 | else |
1420 | return scm_dot_string; | |
1421 | } | |
1422 | else | |
d1ca2c64 | 1423 | return scm_substring (filename, SCM_MAKINUM (i + 1), SCM_MAKINUM (end + 1)); |
6a738a25 | 1424 | } |
1bbd0b84 | 1425 | #undef FUNC_NAME |
6a738a25 JB |
1426 | |
1427 | ||
1428 | ||
1429 | \f | |
1cc91f1b | 1430 | |
0f2d19dd JB |
1431 | void |
1432 | scm_init_filesys () | |
0f2d19dd | 1433 | { |
e841c3e0 KN |
1434 | scm_tc16_dir = scm_make_smob_type ("directory", 0); |
1435 | scm_set_smob_free (scm_tc16_dir, scm_dir_free); | |
1436 | scm_set_smob_print (scm_tc16_dir, scm_dir_print); | |
0f2d19dd | 1437 | |
a163dda9 MD |
1438 | scm_dot_string = scm_permanent_object (scm_makfrom0str (".")); |
1439 | ||
3d8d56df GH |
1440 | #ifdef O_RDONLY |
1441 | scm_sysintern ("O_RDONLY", scm_long2num (O_RDONLY)); | |
1442 | #endif | |
1443 | #ifdef O_WRONLY | |
1444 | scm_sysintern ("O_WRONLY", scm_long2num (O_WRONLY)); | |
1445 | #endif | |
1446 | #ifdef O_RDWR | |
1447 | scm_sysintern ("O_RDWR", scm_long2num (O_RDWR)); | |
1448 | #endif | |
1449 | #ifdef O_CREAT | |
1450 | scm_sysintern ("O_CREAT", scm_long2num (O_CREAT)); | |
1451 | #endif | |
1452 | #ifdef O_EXCL | |
1453 | scm_sysintern ("O_EXCL", scm_long2num (O_EXCL)); | |
1454 | #endif | |
1455 | #ifdef O_NOCTTY | |
1456 | scm_sysintern ("O_NOCTTY", scm_long2num (O_NOCTTY)); | |
1457 | #endif | |
1458 | #ifdef O_TRUNC | |
1459 | scm_sysintern ("O_TRUNC", scm_long2num (O_TRUNC)); | |
1460 | #endif | |
1461 | #ifdef O_APPEND | |
1462 | scm_sysintern ("O_APPEND", scm_long2num (O_APPEND)); | |
1463 | #endif | |
6afcd3b2 | 1464 | #ifdef O_NONBLOCK |
3d8d56df GH |
1465 | scm_sysintern ("O_NONBLOCK", scm_long2num (O_NONBLOCK)); |
1466 | #endif | |
1467 | #ifdef O_NDELAY | |
1468 | scm_sysintern ("O_NDELAY", scm_long2num (O_NDELAY)); | |
1469 | #endif | |
1470 | #ifdef O_SYNC | |
1471 | scm_sysintern ("O_SYNC", scm_long2num (O_SYNC)); | |
1472 | #endif | |
1473 | ||
4c1feaa5 JB |
1474 | #ifdef F_DUPFD |
1475 | scm_sysintern ("F_DUPFD", scm_long2num (F_DUPFD)); | |
1476 | #endif | |
1477 | #ifdef F_GETFD | |
1478 | scm_sysintern ("F_GETFD", scm_long2num (F_GETFD)); | |
1479 | #endif | |
1480 | #ifdef F_SETFD | |
1481 | scm_sysintern ("F_SETFD", scm_long2num (F_SETFD)); | |
1482 | #endif | |
1483 | #ifdef F_GETFL | |
1484 | scm_sysintern ("F_GETFL", scm_long2num (F_GETFL)); | |
1485 | #endif | |
1486 | #ifdef F_SETFL | |
1487 | scm_sysintern ("F_SETFL", scm_long2num (F_SETFL)); | |
1488 | #endif | |
1489 | #ifdef F_GETOWN | |
1490 | scm_sysintern ("F_GETOWN", scm_long2num (F_GETOWN)); | |
1491 | #endif | |
1492 | #ifdef F_SETOWN | |
1493 | scm_sysintern ("F_SETOWN", scm_long2num (F_SETOWN)); | |
1494 | #endif | |
1495 | #ifdef FD_CLOEXEC | |
1496 | scm_sysintern ("FD_CLOEXEC", scm_long2num (FD_CLOEXEC)); | |
bd9e24b3 | 1497 | #endif |
3d8d56df | 1498 | |
8dc9439f | 1499 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 1500 | #include "libguile/filesys.x" |
8dc9439f | 1501 | #endif |
0f2d19dd | 1502 | } |
89e00824 ML |
1503 | |
1504 | /* | |
1505 | Local Variables: | |
1506 | c-file-style: "gnu" | |
1507 | End: | |
1508 | */ |