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def804a3 | 1 | /* Copyright (C) 1996, 1997, 1998, 1999 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> |
0f2d19dd | 47 | #include "_scm.h" |
20e6290e JB |
48 | #include "genio.h" |
49 | #include "smob.h" | |
52f4f4d6 | 50 | #include "feature.h" |
3d8d56df | 51 | #include "fports.h" |
44e8413c | 52 | #include "iselect.h" |
0f2d19dd | 53 | |
1bbd0b84 | 54 | #include "scm_validate.h" |
20e6290e | 55 | #include "filesys.h" |
def804a3 | 56 | |
0f2d19dd | 57 | \f |
def804a3 JB |
58 | #ifdef HAVE_IO_H |
59 | #include <io.h> | |
60 | #endif | |
61 | ||
0f2d19dd JB |
62 | #ifdef TIME_WITH_SYS_TIME |
63 | # include <sys/time.h> | |
64 | # include <time.h> | |
65 | #else | |
66 | # if HAVE_SYS_TIME_H | |
67 | # include <sys/time.h> | |
68 | # else | |
69 | # include <time.h> | |
70 | # endif | |
71 | #endif | |
72 | ||
73 | #ifdef HAVE_UNISTD_H | |
74 | #include <unistd.h> | |
75 | #endif | |
76 | ||
3594582b | 77 | #ifdef LIBC_H_WITH_UNISTD_H |
1f9e2226 JB |
78 | #include <libc.h> |
79 | #endif | |
80 | ||
0f2d19dd JB |
81 | #ifdef HAVE_SYS_SELECT_H |
82 | #include <sys/select.h> | |
83 | #endif | |
84 | ||
1f9e2226 JB |
85 | #ifdef HAVE_STRING_H |
86 | #include <string.h> | |
87 | #endif | |
88 | ||
8cc71382 | 89 | #include <sys/types.h> |
0f2d19dd JB |
90 | #include <sys/stat.h> |
91 | #include <fcntl.h> | |
92 | ||
93 | #include <pwd.h> | |
94 | ||
95 | ||
0f2d19dd JB |
96 | #if HAVE_DIRENT_H |
97 | # include <dirent.h> | |
98 | # define NAMLEN(dirent) strlen((dirent)->d_name) | |
99 | #else | |
100 | # define dirent direct | |
101 | # define NAMLEN(dirent) (dirent)->d_namlen | |
102 | # if HAVE_SYS_NDIR_H | |
103 | # include <sys/ndir.h> | |
104 | # endif | |
105 | # if HAVE_SYS_DIR_H | |
106 | # include <sys/dir.h> | |
107 | # endif | |
108 | # if HAVE_NDIR_H | |
109 | # include <ndir.h> | |
110 | # endif | |
111 | #endif | |
112 | ||
d7b8a21a JB |
113 | /* Ultrix has S_IFSOCK, but no S_ISSOCK. Ipe! */ |
114 | #if defined (S_IFSOCK) && ! defined (S_ISSOCK) | |
115 | #define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) | |
116 | #endif | |
0f2d19dd JB |
117 | \f |
118 | ||
0f2d19dd JB |
119 | |
120 | \f | |
121 | ||
122 | /* {Permissions} | |
123 | */ | |
124 | ||
a1ec6916 | 125 | SCM_DEFINE (scm_chown, "chown", 3, 0, 0, |
1bbd0b84 | 126 | (SCM object, SCM owner, SCM group), |
4079f87e GB |
127 | "Change the ownership and group of the file referred to by @var{obj} to |
128 | the integer userid values @var{owner} and @var{group}. @var{obj} can be | |
129 | a string containing a file name or a port or integer file descriptor | |
130 | which is open on the file (in which case fchown is used as the underlying | |
131 | system call). The return value | |
132 | is unspecified. | |
133 | ||
134 | If @var{obj} is a symbolic link, either the | |
135 | ownership of the link or the ownership of the referenced file will be | |
136 | changed depending on the operating system (lchown is | |
137 | unsupported at present). If @var{owner} or @var{group} is specified | |
138 | as @code{-1}, then that ID is not changed.") | |
1bbd0b84 | 139 | #define FUNC_NAME s_scm_chown |
0f2d19dd | 140 | { |
6afcd3b2 GH |
141 | int rv; |
142 | int fdes; | |
02b754d3 | 143 | |
78446828 MV |
144 | object = SCM_COERCE_OUTPORT (object); |
145 | ||
3b3b36dd GB |
146 | SCM_VALIDATE_INUM (2,owner); |
147 | SCM_VALIDATE_INUM (3,group); | |
0c95b57d | 148 | if (SCM_INUMP (object) || (SCM_OPFPORTP (object))) |
6afcd3b2 GH |
149 | { |
150 | if (SCM_INUMP (object)) | |
151 | fdes = SCM_INUM (object); | |
152 | else | |
77a76b64 | 153 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
154 | SCM_SYSCALL (rv = fchown (fdes, SCM_INUM (owner), SCM_INUM (group))); |
155 | } | |
156 | else | |
157 | { | |
0c95b57d | 158 | SCM_ASSERT (SCM_ROSTRINGP (object), |
1bbd0b84 | 159 | object, SCM_ARG1, FUNC_NAME); |
6afcd3b2 GH |
160 | SCM_COERCE_SUBSTR (object); |
161 | SCM_SYSCALL (rv = chown (SCM_ROCHARS (object), | |
162 | SCM_INUM (owner), SCM_INUM (group))); | |
163 | } | |
164 | if (rv == -1) | |
1bbd0b84 | 165 | SCM_SYSERROR; |
02b754d3 | 166 | return SCM_UNSPECIFIED; |
0f2d19dd | 167 | } |
1bbd0b84 | 168 | #undef FUNC_NAME |
0f2d19dd JB |
169 | |
170 | ||
a1ec6916 | 171 | SCM_DEFINE (scm_chmod, "chmod", 2, 0, 0, |
1bbd0b84 | 172 | (SCM object, SCM mode), |
4079f87e GB |
173 | "Changes the permissions of the file referred to by @var{obj}. |
174 | @var{obj} can be a string containing a file name or a port or integer file | |
175 | descriptor which is open on a file (in which case @code{fchmod} is used | |
176 | as the underlying system call). | |
177 | @var{mode} specifies | |
178 | the new permissions as a decimal number, e.g., @code{(chmod "foo" #o755)}. | |
179 | The return value is unspecified.") | |
1bbd0b84 | 180 | #define FUNC_NAME s_scm_chmod |
0f2d19dd JB |
181 | { |
182 | int rv; | |
6afcd3b2 GH |
183 | int fdes; |
184 | ||
78446828 MV |
185 | object = SCM_COERCE_OUTPORT (object); |
186 | ||
3b3b36dd | 187 | SCM_VALIDATE_INUM (2,mode); |
0c95b57d | 188 | if (SCM_INUMP (object) || SCM_OPFPORTP (object)) |
89958ad0 | 189 | { |
6afcd3b2 GH |
190 | if (SCM_INUMP (object)) |
191 | fdes = SCM_INUM (object); | |
192 | else | |
77a76b64 | 193 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 | 194 | SCM_SYSCALL (rv = fchmod (fdes, SCM_INUM (mode))); |
89958ad0 | 195 | } |
0f2d19dd JB |
196 | else |
197 | { | |
3b3b36dd | 198 | SCM_VALIDATE_ROSTRING (1,object); |
6afcd3b2 GH |
199 | SCM_COERCE_SUBSTR (object); |
200 | SCM_SYSCALL (rv = chmod (SCM_ROCHARS (object), SCM_INUM (mode))); | |
0f2d19dd | 201 | } |
6afcd3b2 | 202 | if (rv == -1) |
1bbd0b84 | 203 | SCM_SYSERROR; |
02b754d3 | 204 | return SCM_UNSPECIFIED; |
0f2d19dd | 205 | } |
1bbd0b84 | 206 | #undef FUNC_NAME |
0f2d19dd | 207 | |
a1ec6916 | 208 | SCM_DEFINE (scm_umask, "umask", 0, 1, 0, |
1bbd0b84 | 209 | (SCM mode), |
4079f87e GB |
210 | "If @var{mode} is omitted, retuns a decimal number representing the current |
211 | file creation mask. Otherwise the file creation mask is set to | |
212 | @var{mode} and the previous value is returned. | |
213 | ||
214 | E.g., @code{(umask #o022)} sets the mask to octal 22, decimal 18.") | |
1bbd0b84 | 215 | #define FUNC_NAME s_scm_umask |
0f2d19dd JB |
216 | { |
217 | mode_t mask; | |
218 | if (SCM_UNBNDP (mode)) | |
219 | { | |
220 | mask = umask (0); | |
221 | umask (mask); | |
222 | } | |
223 | else | |
224 | { | |
3b3b36dd | 225 | SCM_VALIDATE_INUM (1,mode); |
0f2d19dd JB |
226 | mask = umask (SCM_INUM (mode)); |
227 | } | |
228 | return SCM_MAKINUM (mask); | |
229 | } | |
1bbd0b84 | 230 | #undef FUNC_NAME |
0f2d19dd JB |
231 | |
232 | \f | |
0f2d19dd | 233 | |
a1ec6916 | 234 | SCM_DEFINE (scm_open_fdes, "open-fdes", 2, 1, 0, |
1bbd0b84 | 235 | (SCM path, SCM flags, SCM mode), |
4079f87e GB |
236 | "Similar to @code{open} but returns a file descriptor instead of a |
237 | port.") | |
1bbd0b84 | 238 | #define FUNC_NAME s_scm_open_fdes |
0f2d19dd JB |
239 | { |
240 | int fd; | |
3d8d56df | 241 | int iflags; |
6afcd3b2 | 242 | int imode; |
0f2d19dd | 243 | |
3b3b36dd | 244 | SCM_VALIDATE_ROSTRING (1,path); |
6afcd3b2 | 245 | SCM_COERCE_SUBSTR (path); |
3b3b36dd GB |
246 | SCM_VALIDATE_INUM_COPY (2,flags,iflags); |
247 | SCM_VALIDATE_INUM_DEF_COPY (3,mode,0666,imode); | |
6afcd3b2 | 248 | SCM_SYSCALL (fd = open (SCM_ROCHARS (path), iflags, imode)); |
3d8d56df | 249 | if (fd == -1) |
1bbd0b84 | 250 | SCM_SYSERROR; |
6afcd3b2 GH |
251 | return SCM_MAKINUM (fd); |
252 | } | |
1bbd0b84 | 253 | #undef FUNC_NAME |
6afcd3b2 | 254 | |
a1ec6916 | 255 | SCM_DEFINE (scm_open, "open", 2, 1, 0, |
1bbd0b84 | 256 | (SCM path, SCM flags, SCM mode), |
4079f87e GB |
257 | "Open the file named by @var{path} for reading and/or writing. |
258 | @var{flags} is an integer specifying how the file should be opened. | |
259 | @var{mode} is an integer specifying the permission bits of the file, if | |
260 | it needs to be created, before the umask is applied. The default is 666 | |
261 | (Unix itself has no default). | |
262 | ||
263 | @var{flags} can be constructed by combining variables using @code{logior}. | |
264 | Basic flags are: | |
265 | ||
266 | @defvar O_RDONLY | |
267 | Open the file read-only. | |
268 | @end defvar | |
269 | @defvar O_WRONLY | |
270 | Open the file write-only. | |
271 | @end defvar | |
272 | @defvar O_RDWR | |
273 | Open the file read/write. | |
274 | @end defvar | |
275 | @defvar O_APPEND | |
276 | Append to the file instead of truncating. | |
277 | @end defvar | |
278 | @defvar O_CREAT | |
279 | Create the file if it does not already exist. | |
280 | @end defvar | |
281 | ||
282 | See the Unix documentation of the @code{open} system call | |
283 | for additional flags.") | |
1bbd0b84 | 284 | #define FUNC_NAME s_scm_open |
6afcd3b2 GH |
285 | { |
286 | SCM newpt; | |
287 | char *port_mode; | |
288 | int fd; | |
6afcd3b2 GH |
289 | int iflags; |
290 | ||
291 | fd = SCM_INUM (scm_open_fdes (path, flags, mode)); | |
3b3b36dd | 292 | SCM_VALIDATE_INUM_COPY (2,flags,iflags); |
3d8d56df | 293 | if (iflags & O_RDWR) |
77a76b64 JB |
294 | { |
295 | if (iflags & O_APPEND) | |
296 | port_mode = "a+"; | |
297 | else if (iflags & O_CREAT) | |
298 | port_mode = "w+"; | |
299 | else | |
300 | port_mode = "r+"; | |
301 | } | |
3d8d56df | 302 | else { |
77a76b64 JB |
303 | if (iflags & O_APPEND) |
304 | port_mode = "a"; | |
305 | else if (iflags & O_WRONLY) | |
3d8d56df GH |
306 | port_mode = "w"; |
307 | else | |
308 | port_mode = "r"; | |
309 | } | |
77a76b64 | 310 | newpt = scm_fdes_to_port (fd, port_mode, path); |
3d8d56df | 311 | return newpt; |
0f2d19dd | 312 | } |
1bbd0b84 | 313 | #undef FUNC_NAME |
0f2d19dd | 314 | |
a1ec6916 | 315 | SCM_DEFINE (scm_close, "close", 1, 0, 0, |
1bbd0b84 | 316 | (SCM fd_or_port), |
4079f87e GB |
317 | "Similar to close-port (@pxref{Generic Port Operations, close-port}), |
318 | but also works on file descriptors. A side | |
319 | effect of closing a file descriptor is that any ports using that file | |
320 | descriptor are moved to a different file descriptor and have | |
321 | their revealed counts set to zero.") | |
1bbd0b84 | 322 | #define FUNC_NAME s_scm_close |
eadd48de GH |
323 | { |
324 | int rv; | |
325 | int fd; | |
326 | ||
78446828 MV |
327 | fd_or_port = SCM_COERCE_OUTPORT (fd_or_port); |
328 | ||
0c95b57d | 329 | if (SCM_PORTP (fd_or_port)) |
eadd48de | 330 | return scm_close_port (fd_or_port); |
3b3b36dd | 331 | SCM_VALIDATE_INUM (1,fd_or_port); |
eadd48de | 332 | fd = SCM_INUM (fd_or_port); |
eadd48de | 333 | scm_evict_ports (fd); /* see scsh manual. */ |
a9488d12 | 334 | SCM_SYSCALL (rv = close (fd)); |
eadd48de GH |
335 | /* following scsh, closing an already closed file descriptor is |
336 | not an error. */ | |
337 | if (rv < 0 && errno != EBADF) | |
1bbd0b84 GB |
338 | SCM_SYSERROR; |
339 | return SCM_NEGATE_BOOL(rv < 0); | |
eadd48de | 340 | } |
1bbd0b84 | 341 | #undef FUNC_NAME |
eadd48de | 342 | |
0f2d19dd JB |
343 | \f |
344 | /* {Files} | |
345 | */ | |
1cc91f1b | 346 | |
ae5253c5 GH |
347 | SCM_SYMBOL (scm_sym_regular, "regular"); |
348 | SCM_SYMBOL (scm_sym_directory, "directory"); | |
f326ecf3 | 349 | #ifdef HAVE_S_ISLNK |
ae5253c5 | 350 | SCM_SYMBOL (scm_sym_symlink, "symlink"); |
f326ecf3 | 351 | #endif |
ae5253c5 GH |
352 | SCM_SYMBOL (scm_sym_block_special, "block-special"); |
353 | SCM_SYMBOL (scm_sym_char_special, "char-special"); | |
354 | SCM_SYMBOL (scm_sym_fifo, "fifo"); | |
355 | SCM_SYMBOL (scm_sym_sock, "socket"); | |
356 | SCM_SYMBOL (scm_sym_unknown, "unknown"); | |
357 | ||
0f2d19dd | 358 | static SCM |
1bbd0b84 | 359 | scm_stat2scm (struct stat *stat_temp) |
0f2d19dd | 360 | { |
a8741caa | 361 | SCM ans = scm_make_vector (SCM_MAKINUM (15), SCM_UNSPECIFIED); |
0f2d19dd | 362 | SCM *ve = SCM_VELTS (ans); |
ae5253c5 | 363 | |
0f2d19dd JB |
364 | ve[0] = scm_ulong2num ((unsigned long) stat_temp->st_dev); |
365 | ve[1] = scm_ulong2num ((unsigned long) stat_temp->st_ino); | |
366 | ve[2] = scm_ulong2num ((unsigned long) stat_temp->st_mode); | |
367 | ve[3] = scm_ulong2num ((unsigned long) stat_temp->st_nlink); | |
368 | ve[4] = scm_ulong2num ((unsigned long) stat_temp->st_uid); | |
369 | ve[5] = scm_ulong2num ((unsigned long) stat_temp->st_gid); | |
370 | #ifdef HAVE_ST_RDEV | |
371 | ve[6] = scm_ulong2num ((unsigned long) stat_temp->st_rdev); | |
372 | #else | |
373 | ve[6] = SCM_BOOL_F; | |
374 | #endif | |
375 | ve[7] = scm_ulong2num ((unsigned long) stat_temp->st_size); | |
376 | ve[8] = scm_ulong2num ((unsigned long) stat_temp->st_atime); | |
377 | ve[9] = scm_ulong2num ((unsigned long) stat_temp->st_mtime); | |
378 | ve[10] = scm_ulong2num ((unsigned long) stat_temp->st_ctime); | |
379 | #ifdef HAVE_ST_BLKSIZE | |
380 | ve[11] = scm_ulong2num ((unsigned long) stat_temp->st_blksize); | |
381 | #else | |
382 | ve[11] = scm_ulong2num (4096L); | |
383 | #endif | |
384 | #ifdef HAVE_ST_BLOCKS | |
385 | ve[12] = scm_ulong2num ((unsigned long) stat_temp->st_blocks); | |
386 | #else | |
387 | ve[12] = SCM_BOOL_F; | |
388 | #endif | |
ae5253c5 GH |
389 | { |
390 | int mode = stat_temp->st_mode; | |
391 | ||
392 | if (S_ISREG (mode)) | |
393 | ve[13] = scm_sym_regular; | |
394 | else if (S_ISDIR (mode)) | |
395 | ve[13] = scm_sym_directory; | |
f326ecf3 | 396 | #ifdef HAVE_S_ISLNK |
ae5253c5 GH |
397 | else if (S_ISLNK (mode)) |
398 | ve[13] = scm_sym_symlink; | |
f326ecf3 | 399 | #endif |
ae5253c5 GH |
400 | else if (S_ISBLK (mode)) |
401 | ve[13] = scm_sym_block_special; | |
402 | else if (S_ISCHR (mode)) | |
403 | ve[13] = scm_sym_char_special; | |
404 | else if (S_ISFIFO (mode)) | |
405 | ve[13] = scm_sym_fifo; | |
406 | else if (S_ISSOCK (mode)) | |
407 | ve[13] = scm_sym_sock; | |
408 | else | |
409 | ve[13] = scm_sym_unknown; | |
410 | ||
411 | ve[14] = SCM_MAKINUM ((~S_IFMT) & mode); | |
412 | ||
413 | /* the layout of the bits in ve[14] is intended to be portable. | |
414 | If there are systems that don't follow the usual convention, | |
415 | the following could be used: | |
416 | ||
417 | tmp = 0; | |
418 | if (S_ISUID & mode) tmp += 1; | |
419 | tmp <<= 1; | |
420 | if (S_IRGRP & mode) tmp += 1; | |
421 | tmp <<= 1; | |
422 | if (S_ISVTX & mode) tmp += 1; | |
423 | tmp <<= 1; | |
424 | if (S_IRUSR & mode) tmp += 1; | |
425 | tmp <<= 1; | |
426 | if (S_IWUSR & mode) tmp += 1; | |
427 | tmp <<= 1; | |
428 | if (S_IXUSR & mode) tmp += 1; | |
429 | tmp <<= 1; | |
430 | if (S_IWGRP & mode) tmp += 1; | |
431 | tmp <<= 1; | |
432 | if (S_IXGRP & mode) tmp += 1; | |
433 | tmp <<= 1; | |
434 | if (S_IROTH & mode) tmp += 1; | |
435 | tmp <<= 1; | |
436 | if (S_IWOTH & mode) tmp += 1; | |
437 | tmp <<= 1; | |
438 | if (S_IXOTH & mode) tmp += 1; | |
439 | ||
440 | ve[14] = SCM_MAKINUM (tmp); | |
441 | ||
442 | */ | |
443 | } | |
0f2d19dd JB |
444 | |
445 | return ans; | |
446 | } | |
447 | ||
a1ec6916 | 448 | SCM_DEFINE (scm_stat, "stat", 1, 0, 0, |
1bbd0b84 | 449 | (SCM object), |
4079f87e GB |
450 | "Returns an object containing various information |
451 | about the file determined by @var{obj}. | |
452 | @var{obj} can be a string containing a file name or a port or integer file | |
453 | descriptor which is open on a file (in which case @code{fstat} is used | |
454 | as the underlying system call). | |
455 | ||
456 | The object returned by @code{stat} can be passed as a single parameter | |
457 | to the following procedures, all of which return integers: | |
458 | ||
459 | @table @code | |
460 | @item stat:dev | |
461 | The device containing the file. | |
462 | @item stat:ino | |
463 | The file serial number, which distinguishes this file from all other | |
464 | files on the same device. | |
465 | @item stat:mode | |
466 | The mode of the file. This includes file type information | |
467 | and the file permission bits. See @code{stat:type} and @code{stat:perms} | |
468 | below. | |
469 | @item stat:nlink | |
470 | The number of hard links to the file. | |
471 | @item stat:uid | |
472 | The user ID of the file's owner. | |
473 | @item stat:gid | |
474 | The group ID of the file. | |
475 | @item stat:rdev | |
476 | Device ID; this entry is defined only for character or block | |
477 | special files. | |
478 | @item stat:size | |
479 | The size of a regular file in bytes. | |
480 | @item stat:atime | |
481 | The last access time for the file. | |
482 | @item stat:mtime | |
483 | The last modification time for the file. | |
484 | @item stat:ctime | |
485 | The last modification time for the attributes of the file. | |
486 | @item stat:blksize | |
487 | The optimal block size for reading or writing the file, in bytes. | |
488 | @item stat:blocks | |
489 | The amount of disk space that the file occupies measured in units of | |
490 | 512 byte blocks. | |
491 | @end table | |
492 | ||
493 | In addition, the following procedures return the information | |
494 | from stat:mode in a more convenient form: | |
495 | ||
496 | @table @code | |
497 | @item stat:type | |
498 | A symbol representing the type of file. Possible values are | |
499 | regular, directory, symlink, block-special, char-special, | |
500 | fifo, socket and unknown | |
501 | @item stat:perms | |
502 | An integer representing the access permission bits. | |
503 | @end table") | |
1bbd0b84 | 504 | #define FUNC_NAME s_scm_stat |
0f2d19dd | 505 | { |
6afcd3b2 GH |
506 | int rv; |
507 | int fdes; | |
0f2d19dd JB |
508 | struct stat stat_temp; |
509 | ||
1ea47048 MD |
510 | if (SCM_INUMP (object)) |
511 | SCM_SYSCALL (rv = fstat (SCM_INUM (object), &stat_temp)); | |
512 | else | |
0f2d19dd | 513 | { |
6b5a304f | 514 | SCM_VALIDATE_NIM (1,object); |
1ea47048 MD |
515 | if (SCM_ROSTRINGP (object)) |
516 | { | |
517 | SCM_COERCE_SUBSTR (object); | |
518 | SCM_SYSCALL (rv = stat (SCM_ROCHARS (object), &stat_temp)); | |
519 | } | |
c0ebd8c5 | 520 | else |
0f2d19dd | 521 | { |
1ea47048 | 522 | object = SCM_COERCE_OUTPORT (object); |
1bbd0b84 | 523 | SCM_ASSERT (SCM_OPFPORTP (object), object, SCM_ARG1, FUNC_NAME); |
77a76b64 | 524 | fdes = SCM_FPORT_FDES (object); |
1ea47048 | 525 | SCM_SYSCALL (rv = fstat (fdes, &stat_temp)); |
0f2d19dd | 526 | } |
6afcd3b2 GH |
527 | } |
528 | if (rv == -1) | |
3d8d56df GH |
529 | { |
530 | int en = errno; | |
531 | ||
5d2d2ffc | 532 | SCM_SYSERROR_MSG ("~A: ~S", |
3d8d56df | 533 | scm_listify (scm_makfrom0str (strerror (errno)), |
6afcd3b2 | 534 | object, |
5d2d2ffc | 535 | SCM_UNDEFINED), en); |
3d8d56df | 536 | } |
02b754d3 | 537 | return scm_stat2scm (&stat_temp); |
0f2d19dd | 538 | } |
1bbd0b84 | 539 | #undef FUNC_NAME |
0f2d19dd | 540 | |
0f2d19dd JB |
541 | \f |
542 | /* {Modifying Directories} | |
543 | */ | |
544 | ||
a1ec6916 | 545 | SCM_DEFINE (scm_link, "link", 2, 0, 0, |
1bbd0b84 | 546 | (SCM oldpath, SCM newpath), |
4079f87e GB |
547 | "Creates a new name @var{path-to} in the file system for the file |
548 | named by @var{path-from}. If @var{path-from} is a symbolic link, the | |
549 | link may or may not be followed depending on the system.") | |
1bbd0b84 | 550 | #define FUNC_NAME s_scm_link |
0f2d19dd JB |
551 | { |
552 | int val; | |
02b754d3 | 553 | |
3b3b36dd | 554 | SCM_VALIDATE_ROSTRING (1,oldpath); |
0f2d19dd | 555 | if (SCM_SUBSTRP (oldpath)) |
6afcd3b2 GH |
556 | oldpath = scm_makfromstr (SCM_ROCHARS (oldpath), |
557 | SCM_ROLENGTH (oldpath), 0); | |
3b3b36dd | 558 | SCM_VALIDATE_ROSTRING (2,newpath); |
0f2d19dd | 559 | if (SCM_SUBSTRP (newpath)) |
6afcd3b2 GH |
560 | newpath = scm_makfromstr (SCM_ROCHARS (newpath), |
561 | SCM_ROLENGTH (newpath), 0); | |
0f2d19dd | 562 | SCM_SYSCALL (val = link (SCM_ROCHARS (oldpath), SCM_ROCHARS (newpath))); |
02b754d3 | 563 | if (val != 0) |
1bbd0b84 | 564 | SCM_SYSERROR; |
02b754d3 | 565 | return SCM_UNSPECIFIED; |
0f2d19dd | 566 | } |
1bbd0b84 | 567 | #undef FUNC_NAME |
0f2d19dd JB |
568 | |
569 | ||
570 | ||
a1ec6916 | 571 | SCM_DEFINE (scm_rename, "rename-file", 2, 0, 0, |
1bbd0b84 | 572 | (SCM oldname, SCM newname), |
4079f87e GB |
573 | "Renames the file specified by @var{path-from} to @var{path-to}. |
574 | The return value is unspecified.") | |
1bbd0b84 | 575 | #define FUNC_NAME s_scm_rename |
0f2d19dd JB |
576 | { |
577 | int rv; | |
3b3b36dd GB |
578 | SCM_VALIDATE_ROSTRING (1,oldname); |
579 | SCM_VALIDATE_ROSTRING (2,newname); | |
89958ad0 JB |
580 | SCM_COERCE_SUBSTR (oldname); |
581 | SCM_COERCE_SUBSTR (newname); | |
0f2d19dd | 582 | #ifdef HAVE_RENAME |
89958ad0 | 583 | SCM_SYSCALL (rv = rename (SCM_ROCHARS (oldname), SCM_ROCHARS (newname))); |
0f2d19dd | 584 | #else |
89958ad0 | 585 | SCM_SYSCALL (rv = link (SCM_ROCHARS (oldname), SCM_ROCHARS (newname))); |
02b754d3 | 586 | if (rv == 0) |
0f2d19dd | 587 | { |
89958ad0 | 588 | SCM_SYSCALL (rv = unlink (SCM_ROCHARS (oldname)));; |
02b754d3 | 589 | if (rv != 0) |
0f2d19dd | 590 | /* unlink failed. remove new name */ |
89958ad0 | 591 | SCM_SYSCALL (unlink (SCM_ROCHARS (newname))); |
0f2d19dd | 592 | } |
6afcd3b2 | 593 | #endif |
02b754d3 | 594 | if (rv != 0) |
1bbd0b84 | 595 | SCM_SYSERROR; |
02b754d3 | 596 | return SCM_UNSPECIFIED; |
0f2d19dd | 597 | } |
1bbd0b84 | 598 | #undef FUNC_NAME |
0f2d19dd JB |
599 | |
600 | ||
3b3b36dd | 601 | SCM_DEFINE (scm_delete_file, "delete-file", 1, 0, 0, |
1bbd0b84 | 602 | (SCM str), |
4079f87e | 603 | "Deletes (or \"unlinks\") the file specified by @var{path}.") |
1bbd0b84 | 604 | #define FUNC_NAME s_scm_delete_file |
2f3ed1ba JB |
605 | { |
606 | int ans; | |
3b3b36dd | 607 | SCM_VALIDATE_ROSTRING (1,str); |
89958ad0 JB |
608 | SCM_COERCE_SUBSTR (str); |
609 | SCM_SYSCALL (ans = unlink (SCM_ROCHARS (str))); | |
2f3ed1ba | 610 | if (ans != 0) |
1bbd0b84 | 611 | SCM_SYSERROR; |
2f3ed1ba JB |
612 | return SCM_UNSPECIFIED; |
613 | } | |
1bbd0b84 | 614 | #undef FUNC_NAME |
2f3ed1ba | 615 | |
f25f761d | 616 | #ifdef HAVE_MKDIR |
a1ec6916 | 617 | SCM_DEFINE (scm_mkdir, "mkdir", 1, 1, 0, |
1bbd0b84 | 618 | (SCM path, SCM mode), |
4079f87e GB |
619 | "Create a new directory named by @var{path}. If @var{mode} is omitted |
620 | then the permissions of the directory file are set using the current | |
621 | umask. Otherwise they are set to the decimal value specified with | |
622 | @var{mode}. The return value is unspecified.") | |
1bbd0b84 | 623 | #define FUNC_NAME s_scm_mkdir |
0f2d19dd | 624 | { |
0f2d19dd JB |
625 | int rv; |
626 | mode_t mask; | |
3b3b36dd | 627 | SCM_VALIDATE_ROSTRING (1,path); |
89958ad0 | 628 | SCM_COERCE_SUBSTR (path); |
0f2d19dd JB |
629 | if (SCM_UNBNDP (mode)) |
630 | { | |
631 | mask = umask (0); | |
632 | umask (mask); | |
89958ad0 | 633 | SCM_SYSCALL (rv = mkdir (SCM_ROCHARS (path), 0777 ^ mask)); |
0f2d19dd JB |
634 | } |
635 | else | |
636 | { | |
3b3b36dd | 637 | SCM_VALIDATE_INUM (2,mode); |
89958ad0 | 638 | SCM_SYSCALL (rv = mkdir (SCM_ROCHARS (path), SCM_INUM (mode))); |
0f2d19dd | 639 | } |
02b754d3 | 640 | if (rv != 0) |
1bbd0b84 | 641 | SCM_SYSERROR; |
02b754d3 | 642 | return SCM_UNSPECIFIED; |
0f2d19dd | 643 | } |
1bbd0b84 | 644 | #undef FUNC_NAME |
f25f761d | 645 | #endif /* HAVE_MKDIR */ |
0f2d19dd | 646 | |
f25f761d | 647 | #ifdef HAVE_RMDIR |
a1ec6916 | 648 | SCM_DEFINE (scm_rmdir, "rmdir", 1, 0, 0, |
1bbd0b84 | 649 | (SCM path), |
4079f87e GB |
650 | "Remove the existing directory named by @var{path}. The directory must |
651 | be empty for this to succeed. The return value is unspecified.") | |
1bbd0b84 | 652 | #define FUNC_NAME s_scm_rmdir |
0f2d19dd | 653 | { |
0f2d19dd | 654 | int val; |
02b754d3 | 655 | |
3b3b36dd | 656 | SCM_VALIDATE_ROSTRING (1,path); |
89958ad0 JB |
657 | SCM_COERCE_SUBSTR (path); |
658 | SCM_SYSCALL (val = rmdir (SCM_ROCHARS (path))); | |
02b754d3 | 659 | if (val != 0) |
1bbd0b84 | 660 | SCM_SYSERROR; |
02b754d3 | 661 | return SCM_UNSPECIFIED; |
0f2d19dd | 662 | } |
1bbd0b84 | 663 | #undef FUNC_NAME |
f25f761d | 664 | #endif |
0f2d19dd JB |
665 | |
666 | \f | |
667 | /* {Examining Directories} | |
668 | */ | |
669 | ||
670 | long scm_tc16_dir; | |
671 | ||
a1ec6916 | 672 | SCM_DEFINE (scm_directory_stream_p, "directory-stream?", 1, 0, 0, |
1bbd0b84 | 673 | (SCM obj), |
4079f87e GB |
674 | "Returns a boolean indicating whether @var{object} is a directory stream |
675 | as returned by @code{opendir}.") | |
1bbd0b84 | 676 | #define FUNC_NAME s_scm_directory_stream_p |
77242ff9 | 677 | { |
0c95b57d | 678 | return SCM_BOOL(SCM_DIRP (obj)); |
77242ff9 | 679 | } |
1bbd0b84 | 680 | #undef FUNC_NAME |
77242ff9 | 681 | |
a1ec6916 | 682 | SCM_DEFINE (scm_opendir, "opendir", 1, 0, 0, |
1bbd0b84 | 683 | (SCM dirname), |
4079f87e GB |
684 | "Open the directory specified by @var{path} and return a directory |
685 | stream.") | |
1bbd0b84 | 686 | #define FUNC_NAME s_scm_opendir |
0f2d19dd JB |
687 | { |
688 | DIR *ds; | |
3b3b36dd | 689 | SCM_VALIDATE_ROSTRING (1,dirname); |
89958ad0 | 690 | SCM_COERCE_SUBSTR (dirname); |
89958ad0 | 691 | SCM_SYSCALL (ds = opendir (SCM_ROCHARS (dirname))); |
02b754d3 | 692 | if (ds == NULL) |
1bbd0b84 | 693 | SCM_SYSERROR; |
23a62151 | 694 | SCM_RETURN_NEWSMOB (scm_tc16_dir | SCM_OPN, ds); |
0f2d19dd | 695 | } |
1bbd0b84 | 696 | #undef FUNC_NAME |
0f2d19dd JB |
697 | |
698 | ||
a1ec6916 | 699 | SCM_DEFINE (scm_readdir, "readdir", 1, 0, 0, |
1bbd0b84 | 700 | (SCM port), |
4079f87e GB |
701 | "Return (as a string) the next directory entry from the directory stream |
702 | @var{stream}. If there is no remaining entry to be read then the | |
703 | end of file object is returned.") | |
1bbd0b84 | 704 | #define FUNC_NAME s_scm_readdir |
0f2d19dd JB |
705 | { |
706 | struct dirent *rdent; | |
3b3b36dd | 707 | SCM_VALIDATE_OPDIR (1,port); |
0f2d19dd JB |
708 | errno = 0; |
709 | SCM_SYSCALL (rdent = readdir ((DIR *) SCM_CDR (port))); | |
02b754d3 | 710 | if (errno != 0) |
1bbd0b84 | 711 | SCM_SYSERROR; |
02b754d3 GH |
712 | return (rdent ? scm_makfromstr (rdent->d_name, NAMLEN (rdent), 0) |
713 | : SCM_EOF_VAL); | |
0f2d19dd | 714 | } |
1bbd0b84 | 715 | #undef FUNC_NAME |
0f2d19dd JB |
716 | |
717 | ||
718 | ||
a1ec6916 | 719 | SCM_DEFINE (scm_rewinddir, "rewinddir", 1, 0, 0, |
1bbd0b84 | 720 | (SCM port), |
4079f87e GB |
721 | "Reset the directory port @var{stream} so that the next call to |
722 | @code{readdir} will return the first directory entry.") | |
1bbd0b84 | 723 | #define FUNC_NAME s_scm_rewinddir |
0f2d19dd | 724 | { |
3b3b36dd | 725 | SCM_VALIDATE_OPDIR (1,port); |
0f2d19dd JB |
726 | rewinddir ((DIR *) SCM_CDR (port)); |
727 | return SCM_UNSPECIFIED; | |
728 | } | |
1bbd0b84 | 729 | #undef FUNC_NAME |
0f2d19dd JB |
730 | |
731 | ||
732 | ||
a1ec6916 | 733 | SCM_DEFINE (scm_closedir, "closedir", 1, 0, 0, |
1bbd0b84 | 734 | (SCM port), |
4079f87e GB |
735 | "Close the directory stream @var{stream}. |
736 | The return value is unspecified.") | |
1bbd0b84 | 737 | #define FUNC_NAME s_scm_closedir |
0f2d19dd JB |
738 | { |
739 | int sts; | |
02b754d3 | 740 | |
3b3b36dd | 741 | SCM_VALIDATE_DIR (1,port); |
0f2d19dd JB |
742 | if (SCM_CLOSEDP (port)) |
743 | { | |
02b754d3 | 744 | return SCM_UNSPECIFIED; |
0f2d19dd JB |
745 | } |
746 | SCM_SYSCALL (sts = closedir ((DIR *) SCM_CDR (port))); | |
02b754d3 | 747 | if (sts != 0) |
1bbd0b84 | 748 | SCM_SYSERROR; |
a6c64c3c | 749 | SCM_SETCAR (port, scm_tc16_dir); |
02b754d3 | 750 | return SCM_UNSPECIFIED; |
0f2d19dd | 751 | } |
1bbd0b84 | 752 | #undef FUNC_NAME |
0f2d19dd JB |
753 | |
754 | ||
755 | ||
1cc91f1b | 756 | |
0f2d19dd | 757 | static int |
f8b16091 | 758 | scm_dir_print (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 759 | { |
f8b16091 MD |
760 | scm_puts ("#<", port); |
761 | if (SCM_CLOSEDP (exp)) | |
762 | scm_puts ("closed: ", port); | |
0d03da62 | 763 | scm_puts ("directory stream ", port); |
f8b16091 MD |
764 | scm_intprint (SCM_CDR (exp), 16, port); |
765 | scm_putc ('>', port); | |
0f2d19dd JB |
766 | return 1; |
767 | } | |
768 | ||
1cc91f1b | 769 | |
0f2d19dd | 770 | static scm_sizet |
1bbd0b84 | 771 | scm_dir_free (SCM p) |
0f2d19dd JB |
772 | { |
773 | if (SCM_OPENP (p)) | |
774 | closedir ((DIR *) SCM_CDR (p)); | |
775 | return 0; | |
776 | } | |
777 | ||
0f2d19dd JB |
778 | \f |
779 | /* {Navigating Directories} | |
780 | */ | |
781 | ||
782 | ||
a1ec6916 | 783 | SCM_DEFINE (scm_chdir, "chdir", 1, 0, 0, |
1bbd0b84 | 784 | (SCM str), |
4079f87e GB |
785 | "Change the current working directory to @var{path}. |
786 | The return value is unspecified.") | |
1bbd0b84 | 787 | #define FUNC_NAME s_scm_chdir |
0f2d19dd JB |
788 | { |
789 | int ans; | |
02b754d3 | 790 | |
3b3b36dd | 791 | SCM_VALIDATE_ROSTRING (1,str); |
89958ad0 JB |
792 | SCM_COERCE_SUBSTR (str); |
793 | SCM_SYSCALL (ans = chdir (SCM_ROCHARS (str))); | |
02b754d3 | 794 | if (ans != 0) |
1bbd0b84 | 795 | SCM_SYSERROR; |
02b754d3 | 796 | return SCM_UNSPECIFIED; |
0f2d19dd | 797 | } |
1bbd0b84 | 798 | #undef FUNC_NAME |
0f2d19dd | 799 | |
f25f761d | 800 | #ifdef HAVE_GETCWD |
a1ec6916 | 801 | SCM_DEFINE (scm_getcwd, "getcwd", 0, 0, 0, |
1bbd0b84 | 802 | (), |
4079f87e | 803 | "Returns the name of the current working directory.") |
1bbd0b84 | 804 | #define FUNC_NAME s_scm_getcwd |
0f2d19dd | 805 | { |
0f2d19dd JB |
806 | char *rv; |
807 | ||
808 | scm_sizet size = 100; | |
809 | char *wd; | |
810 | SCM result; | |
811 | ||
1bbd0b84 | 812 | wd = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd JB |
813 | while ((rv = getcwd (wd, size)) == 0 && errno == ERANGE) |
814 | { | |
815 | scm_must_free (wd); | |
816 | size *= 2; | |
1bbd0b84 | 817 | wd = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd | 818 | } |
02b754d3 | 819 | if (rv == 0) |
1bbd0b84 | 820 | SCM_SYSERROR; |
02b754d3 | 821 | result = scm_makfromstr (wd, strlen (wd), 0); |
0f2d19dd | 822 | scm_must_free (wd); |
0f2d19dd | 823 | return result; |
0f2d19dd | 824 | } |
1bbd0b84 | 825 | #undef FUNC_NAME |
f25f761d | 826 | #endif /* HAVE_GETCWD */ |
0f2d19dd JB |
827 | |
828 | \f | |
829 | ||
cafc12ff MD |
830 | static int |
831 | set_element (SELECT_TYPE *set, SCM element, int arg) | |
a48a89bc | 832 | { |
cafc12ff | 833 | int fd; |
78446828 | 834 | element = SCM_COERCE_OUTPORT (element); |
0c95b57d | 835 | if (SCM_OPFPORTP (element)) |
77a76b64 | 836 | fd = SCM_FPORT_FDES (element); |
cafc12ff | 837 | else { |
1bbd0b84 | 838 | SCM_ASSERT (SCM_INUMP (element), element, arg, "select"); |
cafc12ff MD |
839 | fd = SCM_INUM (element); |
840 | } | |
841 | FD_SET (fd, set); | |
842 | return fd; | |
a48a89bc | 843 | } |
1cc91f1b | 844 | |
cafc12ff MD |
845 | static int |
846 | fill_select_type (SELECT_TYPE *set, SCM list, int arg) | |
0f2d19dd | 847 | { |
cafc12ff | 848 | int max_fd = 0, fd; |
0c95b57d | 849 | if (SCM_VECTORP (list)) |
0f2d19dd | 850 | { |
a48a89bc GH |
851 | int len = SCM_LENGTH (list); |
852 | SCM *ve = SCM_VELTS (list); | |
853 | ||
854 | while (len > 0) | |
855 | { | |
cafc12ff MD |
856 | fd = set_element (set, ve[len - 1], arg); |
857 | if (fd > max_fd) | |
858 | max_fd = fd; | |
a48a89bc GH |
859 | len--; |
860 | } | |
861 | } | |
862 | else | |
863 | { | |
864 | while (list != SCM_EOL) | |
865 | { | |
cafc12ff MD |
866 | fd = set_element (set, SCM_CAR (list), arg); |
867 | if (fd > max_fd) | |
868 | max_fd = fd; | |
a48a89bc GH |
869 | list = SCM_CDR (list); |
870 | } | |
0f2d19dd | 871 | } |
cafc12ff MD |
872 | |
873 | return max_fd; | |
0f2d19dd JB |
874 | } |
875 | ||
a48a89bc GH |
876 | static SCM |
877 | get_element (SELECT_TYPE *set, SCM element, SCM list) | |
878 | { | |
78446828 | 879 | element = SCM_COERCE_OUTPORT (element); |
0c95b57d | 880 | if (SCM_OPFPORTP (element)) |
a48a89bc | 881 | { |
77a76b64 | 882 | if (FD_ISSET (SCM_FPORT_FDES (element), set)) |
a48a89bc GH |
883 | list = scm_cons (element, list); |
884 | } | |
885 | else if (SCM_INUMP (element)) | |
886 | { | |
887 | if (FD_ISSET (SCM_INUM (element), set)) | |
888 | list = scm_cons (element, list); | |
889 | } | |
890 | return list; | |
891 | } | |
1cc91f1b | 892 | |
0f2d19dd | 893 | static SCM |
a48a89bc | 894 | retrieve_select_type (SELECT_TYPE *set, SCM list) |
0f2d19dd | 895 | { |
a48a89bc GH |
896 | SCM answer_list = SCM_EOL; |
897 | ||
0c95b57d | 898 | if (SCM_VECTORP (list)) |
0f2d19dd | 899 | { |
a48a89bc GH |
900 | int len = SCM_LENGTH (list); |
901 | SCM *ve = SCM_VELTS (list); | |
902 | ||
903 | while (len > 0) | |
0f2d19dd | 904 | { |
a48a89bc GH |
905 | answer_list = get_element (set, ve[len - 1], answer_list); |
906 | len--; | |
0f2d19dd | 907 | } |
a48a89bc GH |
908 | return scm_vector (answer_list); |
909 | } | |
910 | else | |
911 | { | |
912 | /* list is a list. */ | |
913 | while (list != SCM_EOL) | |
0f2d19dd | 914 | { |
a48a89bc GH |
915 | answer_list = get_element (set, SCM_CAR (list), answer_list); |
916 | list = SCM_CDR (list); | |
0f2d19dd | 917 | } |
a48a89bc | 918 | return answer_list; |
0f2d19dd | 919 | } |
0f2d19dd JB |
920 | } |
921 | ||
f25f761d | 922 | #ifdef HAVE_SELECT |
1bbd0b84 | 923 | /* Static helper functions above refer to s_scm_select directly as s_select */ |
a1ec6916 | 924 | SCM_DEFINE (scm_select, "select", 3, 2, 0, |
1bbd0b84 | 925 | (SCM reads, SCM writes, SCM excepts, SCM secs, SCM usecs), |
4079f87e GB |
926 | "@var{reads}, @var{writes} and @var{excepts} can be lists or vectors: it |
927 | doesn't matter which, but the corresponding object returned will be | |
928 | of the same type. | |
929 | Each element is a port or file descriptor on which to wait for | |
930 | readability, writeability | |
931 | or exceptional conditions respectively. @var{secs} and @var{usecs} | |
932 | optionally specify a timeout: @var{secs} can be specified alone, as | |
933 | either an integer or a real number, or both @var{secs} and @var{usecs} | |
934 | can be specified as integers, in which case @var{usecs} is an additional | |
935 | timeout expressed in microseconds. | |
936 | ||
937 | Buffered input or output data is (currently, but this may change) | |
938 | ignored: select uses the underlying file descriptor of a port | |
939 | (@code{char-ready?} will check input buffers, output buffers are | |
940 | problematic). | |
941 | ||
942 | The return value is a list of subsets of the input lists or vectors for | |
943 | which the requested condition has been met. | |
944 | ||
945 | It is not quite compatible with scsh's select: scsh checks port buffers, | |
946 | doesn't accept input lists or a microsecond timeout, returns multiple | |
947 | values instead of a list and has an additional select! interface. | |
948 | ") | |
1bbd0b84 | 949 | #define FUNC_NAME s_scm_select |
0f2d19dd | 950 | { |
0f2d19dd JB |
951 | struct timeval timeout; |
952 | struct timeval * time_p; | |
953 | SELECT_TYPE read_set; | |
954 | SELECT_TYPE write_set; | |
955 | SELECT_TYPE except_set; | |
cafc12ff | 956 | int max_fd, fd; |
0f2d19dd JB |
957 | int sreturn; |
958 | ||
a48a89bc | 959 | #define assert_set(x, arg) \ |
0c95b57d | 960 | SCM_ASSERT (scm_ilength (x) >= 0 || (SCM_VECTORP (x)), \ |
1bbd0b84 | 961 | x, arg, FUNC_NAME) |
a48a89bc GH |
962 | assert_set (reads, SCM_ARG1); |
963 | assert_set (writes, SCM_ARG2); | |
964 | assert_set (excepts, SCM_ARG3); | |
965 | #undef assert_set | |
0f2d19dd JB |
966 | |
967 | FD_ZERO (&read_set); | |
968 | FD_ZERO (&write_set); | |
969 | FD_ZERO (&except_set); | |
970 | ||
cafc12ff MD |
971 | max_fd = fill_select_type (&read_set, reads, SCM_ARG1); |
972 | fd = fill_select_type (&write_set, writes, SCM_ARG2); | |
973 | if (fd > max_fd) | |
974 | max_fd = fd; | |
975 | fd = fill_select_type (&except_set, excepts, SCM_ARG3); | |
976 | if (fd > max_fd) | |
977 | max_fd = fd; | |
0f2d19dd | 978 | |
a48a89bc | 979 | if (SCM_UNBNDP (secs) || SCM_FALSEP (secs)) |
0f2d19dd JB |
980 | time_p = 0; |
981 | else | |
982 | { | |
a48a89bc GH |
983 | if (SCM_INUMP (secs)) |
984 | { | |
985 | timeout.tv_sec = SCM_INUM (secs); | |
986 | if (SCM_UNBNDP (usecs)) | |
987 | timeout.tv_usec = 0; | |
988 | else | |
989 | { | |
3b3b36dd | 990 | SCM_VALIDATE_INUM (5,usecs); |
a48a89bc GH |
991 | timeout.tv_usec = SCM_INUM (usecs); |
992 | } | |
993 | } | |
0f2d19dd | 994 | else |
a48a89bc | 995 | { |
1bbd0b84 | 996 | double fl = scm_num2dbl (secs, FUNC_NAME); |
a48a89bc GH |
997 | |
998 | if (!SCM_UNBNDP (usecs)) | |
1bbd0b84 | 999 | scm_wrong_type_arg (FUNC_NAME, 4, secs); |
a48a89bc | 1000 | if (fl > LONG_MAX) |
1bbd0b84 | 1001 | scm_out_of_range (FUNC_NAME, secs); |
a48a89bc GH |
1002 | timeout.tv_sec = (long) fl; |
1003 | timeout.tv_usec = (long) ((fl - timeout.tv_sec) * 1000000); | |
1004 | } | |
0f2d19dd JB |
1005 | time_p = &timeout; |
1006 | } | |
1007 | ||
44e8413c | 1008 | #ifdef GUILE_ISELECT |
cafc12ff | 1009 | sreturn = scm_internal_select (max_fd + 1, |
44e8413c MD |
1010 | &read_set, &write_set, &except_set, time_p); |
1011 | #else | |
cafc12ff | 1012 | sreturn = select (max_fd + 1, |
0f2d19dd | 1013 | &read_set, &write_set, &except_set, time_p); |
44e8413c | 1014 | #endif |
0f2d19dd | 1015 | if (sreturn < 0) |
1bbd0b84 | 1016 | SCM_SYSERROR; |
02b754d3 GH |
1017 | return scm_listify (retrieve_select_type (&read_set, reads), |
1018 | retrieve_select_type (&write_set, writes), | |
1019 | retrieve_select_type (&except_set, excepts), | |
1020 | SCM_UNDEFINED); | |
0f2d19dd | 1021 | } |
1bbd0b84 | 1022 | #undef FUNC_NAME |
f25f761d | 1023 | #endif /* HAVE_SELECT */ |
0f2d19dd JB |
1024 | |
1025 | \f | |
4c1feaa5 | 1026 | |
a1ec6916 | 1027 | SCM_DEFINE (scm_fcntl, "fcntl", 2, 0, 1, |
1bbd0b84 | 1028 | (SCM object, SCM cmd, SCM value), |
4079f87e GB |
1029 | "Apply @var{command} to the specified file descriptor or the underlying |
1030 | file descriptor of the specified port. @var{value} is an optional | |
1031 | integer argument. | |
1032 | ||
1033 | Values for @var{command} are: | |
1034 | ||
1035 | @table @code | |
1036 | @item F_DUPFD | |
1037 | Duplicate a file descriptor | |
1038 | @item F_GETFD | |
1039 | Get flags associated with the file descriptor. | |
1040 | @item F_SETFD | |
1041 | Set flags associated with the file descriptor to @var{value}. | |
1042 | @item F_GETFL | |
1043 | Get flags associated with the open file. | |
1044 | @item F_SETFL | |
1045 | Set flags associated with the open file to @var{value} | |
1046 | @item F_GETOWN | |
1047 | Get the process ID of a socket's owner, for @code{SIGIO} signals. | |
1048 | @item F_SETOWN | |
1049 | Set the process that owns a socket to @var{value}, for @code{SIGIO} signals. | |
1050 | @item FD_CLOEXEC | |
1051 | The value used to indicate the "close on exec" flag with @code{F_GETFL} or | |
1052 | @code{F_SETFL}. | |
1053 | @end table") | |
1bbd0b84 | 1054 | #define FUNC_NAME s_scm_fcntl |
4c1feaa5 JB |
1055 | { |
1056 | int rv; | |
6afcd3b2 GH |
1057 | int fdes; |
1058 | int ivalue; | |
4c1feaa5 | 1059 | |
78446828 MV |
1060 | object = SCM_COERCE_OUTPORT (object); |
1061 | ||
3b3b36dd | 1062 | SCM_VALIDATE_INUM (2,cmd); |
0c95b57d | 1063 | if (SCM_OPFPORTP (object)) |
77a76b64 | 1064 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
1065 | else |
1066 | { | |
3b3b36dd | 1067 | SCM_VALIDATE_INUM (1,object); |
6afcd3b2 GH |
1068 | fdes = SCM_INUM (object); |
1069 | } | |
1070 | if (SCM_NULLP (value)) | |
1071 | ivalue = 0; | |
1072 | else | |
1073 | { | |
1bbd0b84 | 1074 | SCM_ASSERT (SCM_INUMP (SCM_CAR (value)), value, SCM_ARG3, FUNC_NAME); |
6afcd3b2 GH |
1075 | ivalue = SCM_INUM (SCM_CAR (value)); |
1076 | } | |
77a76b64 JB |
1077 | SCM_SYSCALL (rv = fcntl (fdes, SCM_INUM (cmd), ivalue)); |
1078 | if (rv == -1) | |
1bbd0b84 | 1079 | SCM_SYSERROR; |
4c1feaa5 JB |
1080 | return SCM_MAKINUM (rv); |
1081 | } | |
1bbd0b84 | 1082 | #undef FUNC_NAME |
6afcd3b2 | 1083 | |
a1ec6916 | 1084 | SCM_DEFINE (scm_fsync, "fsync", 1, 0, 0, |
1bbd0b84 | 1085 | (SCM object), |
4079f87e GB |
1086 | "Copies any unwritten data for the specified output file descriptor to disk. |
1087 | If @var{port/fd} is a port, its buffer is flushed before the underlying | |
1088 | file descriptor is fsync'd. | |
1089 | The return value is unspecified.") | |
1bbd0b84 | 1090 | #define FUNC_NAME s_scm_fsync |
6afcd3b2 GH |
1091 | { |
1092 | int fdes; | |
1093 | ||
78446828 MV |
1094 | object = SCM_COERCE_OUTPORT (object); |
1095 | ||
0c95b57d | 1096 | if (SCM_OPFPORTP (object)) |
6afcd3b2 | 1097 | { |
affc96b5 | 1098 | scm_flush (object); |
77a76b64 | 1099 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
1100 | } |
1101 | else | |
1102 | { | |
3b3b36dd | 1103 | SCM_VALIDATE_INUM (1,object); |
6afcd3b2 GH |
1104 | fdes = SCM_INUM (object); |
1105 | } | |
1106 | if (fsync (fdes) == -1) | |
1bbd0b84 | 1107 | SCM_SYSERROR; |
6afcd3b2 GH |
1108 | return SCM_UNSPECIFIED; |
1109 | } | |
1bbd0b84 | 1110 | #undef FUNC_NAME |
0f2d19dd | 1111 | |
f25f761d | 1112 | #ifdef HAVE_SYMLINK |
a1ec6916 | 1113 | SCM_DEFINE (scm_symlink, "symlink", 2, 0, 0, |
1bbd0b84 | 1114 | (SCM oldpath, SCM newpath), |
4079f87e GB |
1115 | "Create a symbolic link named @var{path-to} with the value (i.e., pointing to) |
1116 | @var{path-from}. The return value is unspecified.") | |
1bbd0b84 | 1117 | #define FUNC_NAME s_scm_symlink |
0f2d19dd | 1118 | { |
0f2d19dd | 1119 | int val; |
02b754d3 | 1120 | |
3b3b36dd GB |
1121 | SCM_VALIDATE_ROSTRING (1,oldpath); |
1122 | SCM_VALIDATE_ROSTRING (2,newpath); | |
89958ad0 JB |
1123 | SCM_COERCE_SUBSTR (oldpath); |
1124 | SCM_COERCE_SUBSTR (newpath); | |
1125 | SCM_SYSCALL (val = symlink(SCM_ROCHARS(oldpath), SCM_ROCHARS(newpath))); | |
02b754d3 | 1126 | if (val != 0) |
1bbd0b84 | 1127 | SCM_SYSERROR; |
02b754d3 | 1128 | return SCM_UNSPECIFIED; |
0f2d19dd | 1129 | } |
1bbd0b84 | 1130 | #undef FUNC_NAME |
f25f761d | 1131 | #endif /* HAVE_SYMLINK */ |
0f2d19dd | 1132 | |
f25f761d | 1133 | #ifdef HAVE_READLINK |
a1ec6916 | 1134 | SCM_DEFINE (scm_readlink, "readlink", 1, 0, 0, |
1bbd0b84 | 1135 | (SCM path), |
4079f87e GB |
1136 | "Returns the value of the symbolic link named by |
1137 | @var{path} (a string), i.e., the | |
1138 | file that the link points to.") | |
1bbd0b84 | 1139 | #define FUNC_NAME s_scm_readlink |
0f2d19dd | 1140 | { |
6a738a25 JB |
1141 | int rv; |
1142 | int size = 100; | |
0f2d19dd JB |
1143 | char *buf; |
1144 | SCM result; | |
3b3b36dd | 1145 | SCM_VALIDATE_ROSTRING (1,path); |
89958ad0 | 1146 | SCM_COERCE_SUBSTR (path); |
1bbd0b84 | 1147 | buf = scm_must_malloc (size, FUNC_NAME); |
6a738a25 | 1148 | while ((rv = readlink (SCM_ROCHARS (path), buf, size)) == size) |
0f2d19dd JB |
1149 | { |
1150 | scm_must_free (buf); | |
1151 | size *= 2; | |
1bbd0b84 | 1152 | buf = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd | 1153 | } |
02b754d3 | 1154 | if (rv == -1) |
1bbd0b84 | 1155 | SCM_SYSERROR; |
02b754d3 | 1156 | result = scm_makfromstr (buf, rv, 0); |
0f2d19dd | 1157 | scm_must_free (buf); |
0f2d19dd | 1158 | return result; |
0f2d19dd | 1159 | } |
1bbd0b84 | 1160 | #undef FUNC_NAME |
f25f761d | 1161 | #endif /* HAVE_READLINK */ |
0f2d19dd | 1162 | |
f25f761d | 1163 | #ifdef HAVE_LSTAT |
a1ec6916 | 1164 | SCM_DEFINE (scm_lstat, "lstat", 1, 0, 0, |
1bbd0b84 | 1165 | (SCM str), |
4079f87e GB |
1166 | "Similar to @code{stat}, but does not follow symbolic links, i.e., |
1167 | it will return information about a symbolic link itself, not the | |
1168 | file it points to. @var{path} must be a string.") | |
1bbd0b84 | 1169 | #define FUNC_NAME s_scm_lstat |
0f2d19dd | 1170 | { |
02b754d3 | 1171 | int rv; |
0f2d19dd | 1172 | struct stat stat_temp; |
02b754d3 | 1173 | |
3b3b36dd | 1174 | SCM_VALIDATE_ROSTRING (1,str); |
89958ad0 JB |
1175 | SCM_COERCE_SUBSTR (str); |
1176 | SCM_SYSCALL(rv = lstat(SCM_ROCHARS(str), &stat_temp)); | |
02b754d3 | 1177 | if (rv != 0) |
3d8d56df GH |
1178 | { |
1179 | int en = errno; | |
1180 | ||
5d2d2ffc | 1181 | SCM_SYSERROR_MSG ("~A: ~S", |
3d8d56df GH |
1182 | scm_listify (scm_makfrom0str (strerror (errno)), |
1183 | str, | |
5d2d2ffc | 1184 | SCM_UNDEFINED), en); |
3d8d56df | 1185 | } |
02b754d3 | 1186 | return scm_stat2scm(&stat_temp); |
0f2d19dd | 1187 | } |
1bbd0b84 | 1188 | #undef FUNC_NAME |
f25f761d | 1189 | #endif /* HAVE_LSTAT */ |
0f2d19dd | 1190 | |
a1ec6916 | 1191 | SCM_DEFINE (scm_copy_file, "copy-file", 2, 0, 0, |
1bbd0b84 | 1192 | (SCM oldfile, SCM newfile), |
4079f87e GB |
1193 | "Copy the file specified by @var{path-from} to @var{path-to}. |
1194 | The return value is unspecified.") | |
1bbd0b84 | 1195 | #define FUNC_NAME s_scm_copy_file |
0f2d19dd JB |
1196 | { |
1197 | int oldfd, newfd; | |
1198 | int n; | |
77a76b64 | 1199 | char buf[BUFSIZ]; |
0f2d19dd JB |
1200 | struct stat oldstat; |
1201 | ||
3b3b36dd | 1202 | SCM_VALIDATE_ROSTRING (1,oldfile); |
0f2d19dd JB |
1203 | if (SCM_SUBSTRP (oldfile)) |
1204 | oldfile = scm_makfromstr (SCM_ROCHARS (oldfile), SCM_ROLENGTH (oldfile), 0); | |
3b3b36dd | 1205 | SCM_VALIDATE_ROSTRING (2,newfile); |
0f2d19dd JB |
1206 | if (SCM_SUBSTRP (newfile)) |
1207 | newfile = scm_makfromstr (SCM_ROCHARS (newfile), SCM_ROLENGTH (newfile), 0); | |
1208 | if (stat (SCM_ROCHARS (oldfile), &oldstat) == -1) | |
1bbd0b84 | 1209 | SCM_SYSERROR; |
0f2d19dd JB |
1210 | oldfd = open (SCM_ROCHARS (oldfile), O_RDONLY); |
1211 | if (oldfd == -1) | |
1bbd0b84 | 1212 | SCM_SYSERROR; |
02b754d3 GH |
1213 | |
1214 | /* use POSIX flags instead of 07777?. */ | |
0f2d19dd JB |
1215 | newfd = open (SCM_ROCHARS (newfile), O_WRONLY | O_CREAT | O_TRUNC, |
1216 | oldstat.st_mode & 07777); | |
1217 | if (newfd == -1) | |
1bbd0b84 | 1218 | SCM_SYSERROR; |
02b754d3 | 1219 | |
0f2d19dd JB |
1220 | while ((n = read (oldfd, buf, sizeof buf)) > 0) |
1221 | if (write (newfd, buf, n) != n) | |
1222 | { | |
1223 | close (oldfd); | |
1224 | close (newfd); | |
1bbd0b84 | 1225 | SCM_SYSERROR; |
0f2d19dd JB |
1226 | } |
1227 | close (oldfd); | |
1228 | if (close (newfd) == -1) | |
1bbd0b84 | 1229 | SCM_SYSERROR; |
02b754d3 | 1230 | return SCM_UNSPECIFIED; |
0f2d19dd | 1231 | } |
1bbd0b84 | 1232 | #undef FUNC_NAME |
0f2d19dd JB |
1233 | |
1234 | \f | |
6a738a25 JB |
1235 | /* Filename manipulation */ |
1236 | ||
1237 | SCM scm_dot_string; | |
1238 | ||
a1ec6916 | 1239 | SCM_DEFINE (scm_dirname, "dirname", 1, 0, 0, |
1bbd0b84 GB |
1240 | (SCM filename), |
1241 | "") | |
1242 | #define FUNC_NAME s_scm_dirname | |
6a738a25 JB |
1243 | { |
1244 | char *s; | |
1245 | int i, len; | |
3b3b36dd | 1246 | SCM_VALIDATE_ROSTRING (1,filename); |
6a738a25 JB |
1247 | s = SCM_ROCHARS (filename); |
1248 | len = SCM_LENGTH (filename); | |
1249 | i = len - 1; | |
1250 | while (i >= 0 && s[i] == '/') --i; | |
1251 | while (i >= 0 && s[i] != '/') --i; | |
1252 | while (i >= 0 && s[i] == '/') --i; | |
1253 | if (i < 0) | |
1254 | { | |
1255 | if (len > 0 && s[0] == '/') | |
1256 | return scm_make_shared_substring (filename, SCM_INUM0, SCM_MAKINUM (1)); | |
1257 | else | |
1258 | return scm_dot_string; | |
1259 | } | |
1260 | else | |
1261 | return scm_make_shared_substring (filename, SCM_INUM0, SCM_MAKINUM (i + 1)); | |
1262 | } | |
1bbd0b84 | 1263 | #undef FUNC_NAME |
6a738a25 | 1264 | |
a1ec6916 | 1265 | SCM_DEFINE (scm_basename, "basename", 1, 1, 0, |
1bbd0b84 GB |
1266 | (SCM filename, SCM suffix), |
1267 | "") | |
1268 | #define FUNC_NAME s_scm_basename | |
6a738a25 JB |
1269 | { |
1270 | char *f, *s = 0; | |
1271 | int i, j, len, end; | |
3b3b36dd | 1272 | SCM_VALIDATE_ROSTRING (1,filename); |
6a738a25 | 1273 | SCM_ASSERT (SCM_UNBNDP (suffix) |
0c95b57d | 1274 | || (SCM_ROSTRINGP (suffix)), |
6a738a25 JB |
1275 | suffix, |
1276 | SCM_ARG2, | |
1bbd0b84 | 1277 | FUNC_NAME); |
6a738a25 JB |
1278 | f = SCM_ROCHARS (filename); |
1279 | if (SCM_UNBNDP (suffix)) | |
1280 | j = -1; | |
1281 | else | |
1282 | { | |
1283 | s = SCM_ROCHARS (suffix); | |
1284 | j = SCM_LENGTH (suffix) - 1; | |
1285 | } | |
1286 | len = SCM_LENGTH (filename); | |
1287 | i = len - 1; | |
1288 | while (i >= 0 && f[i] == '/') --i; | |
1289 | end = i; | |
1290 | while (i >= 0 && j >= 0 && f[i] == s[j]) --i, --j; | |
1291 | if (j == -1) | |
1292 | end = i; | |
1293 | while (i >= 0 && f[i] != '/') --i; | |
1294 | if (i == end) | |
1295 | { | |
1296 | if (len > 0 && f[0] == '/') | |
1297 | return scm_make_shared_substring (filename, SCM_INUM0, SCM_MAKINUM (1)); | |
1298 | else | |
1299 | return scm_dot_string; | |
1300 | } | |
1301 | else | |
1302 | return scm_make_shared_substring (filename, | |
1303 | SCM_MAKINUM (i + 1), | |
1304 | SCM_MAKINUM (end + 1)); | |
1305 | } | |
1bbd0b84 | 1306 | #undef FUNC_NAME |
6a738a25 JB |
1307 | |
1308 | ||
1309 | ||
1310 | \f | |
1cc91f1b | 1311 | |
0f2d19dd JB |
1312 | void |
1313 | scm_init_filesys () | |
0f2d19dd | 1314 | { |
23a62151 MD |
1315 | scm_tc16_dir = scm_make_smob_type_mfpe ("directory", 0, |
1316 | NULL, scm_dir_free,scm_dir_print, NULL); | |
0f2d19dd | 1317 | |
a163dda9 MD |
1318 | scm_dot_string = scm_permanent_object (scm_makfrom0str (".")); |
1319 | ||
3d8d56df GH |
1320 | #ifdef O_RDONLY |
1321 | scm_sysintern ("O_RDONLY", scm_long2num (O_RDONLY)); | |
1322 | #endif | |
1323 | #ifdef O_WRONLY | |
1324 | scm_sysintern ("O_WRONLY", scm_long2num (O_WRONLY)); | |
1325 | #endif | |
1326 | #ifdef O_RDWR | |
1327 | scm_sysintern ("O_RDWR", scm_long2num (O_RDWR)); | |
1328 | #endif | |
1329 | #ifdef O_CREAT | |
1330 | scm_sysintern ("O_CREAT", scm_long2num (O_CREAT)); | |
1331 | #endif | |
1332 | #ifdef O_EXCL | |
1333 | scm_sysintern ("O_EXCL", scm_long2num (O_EXCL)); | |
1334 | #endif | |
1335 | #ifdef O_NOCTTY | |
1336 | scm_sysintern ("O_NOCTTY", scm_long2num (O_NOCTTY)); | |
1337 | #endif | |
1338 | #ifdef O_TRUNC | |
1339 | scm_sysintern ("O_TRUNC", scm_long2num (O_TRUNC)); | |
1340 | #endif | |
1341 | #ifdef O_APPEND | |
1342 | scm_sysintern ("O_APPEND", scm_long2num (O_APPEND)); | |
1343 | #endif | |
6afcd3b2 | 1344 | #ifdef O_NONBLOCK |
3d8d56df GH |
1345 | scm_sysintern ("O_NONBLOCK", scm_long2num (O_NONBLOCK)); |
1346 | #endif | |
1347 | #ifdef O_NDELAY | |
1348 | scm_sysintern ("O_NDELAY", scm_long2num (O_NDELAY)); | |
1349 | #endif | |
1350 | #ifdef O_SYNC | |
1351 | scm_sysintern ("O_SYNC", scm_long2num (O_SYNC)); | |
1352 | #endif | |
1353 | ||
4c1feaa5 JB |
1354 | #ifdef F_DUPFD |
1355 | scm_sysintern ("F_DUPFD", scm_long2num (F_DUPFD)); | |
1356 | #endif | |
1357 | #ifdef F_GETFD | |
1358 | scm_sysintern ("F_GETFD", scm_long2num (F_GETFD)); | |
1359 | #endif | |
1360 | #ifdef F_SETFD | |
1361 | scm_sysintern ("F_SETFD", scm_long2num (F_SETFD)); | |
1362 | #endif | |
1363 | #ifdef F_GETFL | |
1364 | scm_sysintern ("F_GETFL", scm_long2num (F_GETFL)); | |
1365 | #endif | |
1366 | #ifdef F_SETFL | |
1367 | scm_sysintern ("F_SETFL", scm_long2num (F_SETFL)); | |
1368 | #endif | |
1369 | #ifdef F_GETOWN | |
1370 | scm_sysintern ("F_GETOWN", scm_long2num (F_GETOWN)); | |
1371 | #endif | |
1372 | #ifdef F_SETOWN | |
1373 | scm_sysintern ("F_SETOWN", scm_long2num (F_SETOWN)); | |
1374 | #endif | |
1375 | #ifdef FD_CLOEXEC | |
1376 | scm_sysintern ("FD_CLOEXEC", scm_long2num (FD_CLOEXEC)); | |
1377 | #endif | |
3d8d56df | 1378 | |
0f2d19dd JB |
1379 | #include "filesys.x" |
1380 | } |