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e4b265d8 | 1 | /* Copyright (C) 1996,1997,1998,1999,2000,2001 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> |
e6e2e95a MD |
47 | #include <errno.h> |
48 | ||
a0599745 MD |
49 | #include "libguile/_scm.h" |
50 | #include "libguile/smob.h" | |
51 | #include "libguile/feature.h" | |
52 | #include "libguile/fports.h" | |
53 | #include "libguile/iselect.h" | |
54 | #include "libguile/strings.h" | |
55 | #include "libguile/vectors.h" | |
0f2d19dd | 56 | |
a0599745 MD |
57 | #include "libguile/validate.h" |
58 | #include "libguile/filesys.h" | |
def804a3 | 59 | |
0f2d19dd | 60 | \f |
def804a3 JB |
61 | #ifdef HAVE_IO_H |
62 | #include <io.h> | |
63 | #endif | |
64 | ||
0f2d19dd JB |
65 | #ifdef TIME_WITH_SYS_TIME |
66 | # include <sys/time.h> | |
67 | # include <time.h> | |
68 | #else | |
69 | # if HAVE_SYS_TIME_H | |
70 | # include <sys/time.h> | |
71 | # else | |
72 | # include <time.h> | |
73 | # endif | |
74 | #endif | |
75 | ||
76 | #ifdef HAVE_UNISTD_H | |
77 | #include <unistd.h> | |
78 | #endif | |
79 | ||
3594582b | 80 | #ifdef LIBC_H_WITH_UNISTD_H |
1f9e2226 JB |
81 | #include <libc.h> |
82 | #endif | |
83 | ||
0f2d19dd JB |
84 | #ifdef HAVE_SYS_SELECT_H |
85 | #include <sys/select.h> | |
86 | #endif | |
87 | ||
1f9e2226 JB |
88 | #ifdef HAVE_STRING_H |
89 | #include <string.h> | |
90 | #endif | |
91 | ||
8cc71382 | 92 | #include <sys/types.h> |
0f2d19dd JB |
93 | #include <sys/stat.h> |
94 | #include <fcntl.h> | |
95 | ||
96 | #include <pwd.h> | |
97 | ||
98 | ||
0f2d19dd JB |
99 | #if HAVE_DIRENT_H |
100 | # include <dirent.h> | |
101 | # define NAMLEN(dirent) strlen((dirent)->d_name) | |
102 | #else | |
103 | # define dirent direct | |
104 | # define NAMLEN(dirent) (dirent)->d_namlen | |
105 | # if HAVE_SYS_NDIR_H | |
106 | # include <sys/ndir.h> | |
107 | # endif | |
108 | # if HAVE_SYS_DIR_H | |
109 | # include <sys/dir.h> | |
110 | # endif | |
111 | # if HAVE_NDIR_H | |
112 | # include <ndir.h> | |
113 | # endif | |
114 | #endif | |
115 | ||
d7b8a21a JB |
116 | /* Ultrix has S_IFSOCK, but no S_ISSOCK. Ipe! */ |
117 | #if defined (S_IFSOCK) && ! defined (S_ISSOCK) | |
118 | #define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) | |
119 | #endif | |
0f2d19dd JB |
120 | \f |
121 | ||
0f2d19dd JB |
122 | |
123 | \f | |
124 | ||
125 | /* {Permissions} | |
126 | */ | |
127 | ||
a1ec6916 | 128 | SCM_DEFINE (scm_chown, "chown", 3, 0, 0, |
1bbd0b84 | 129 | (SCM object, SCM owner, SCM group), |
d831b039 GH |
130 | "Change the ownership and group of the file referred to by @var{object} to\n" |
131 | "the integer values @var{owner} and @var{group}. @var{object} can be\n" | |
132 | "a string containing a file name or, if the platform\n" | |
133 | "supports fchown, a port or integer file descriptor\n" | |
134 | "which is open on the file. The return value\n" | |
d3818c29 | 135 | "is unspecified.\n\n" |
d831b039 | 136 | "If @var{object} is a symbolic link, either the\n" |
d3818c29 MD |
137 | "ownership of the link or the ownership of the referenced file will be\n" |
138 | "changed depending on the operating system (lchown is\n" | |
139 | "unsupported at present). If @var{owner} or @var{group} is specified\n" | |
140 | "as @code{-1}, then that ID is not changed.") | |
1bbd0b84 | 141 | #define FUNC_NAME s_scm_chown |
0f2d19dd | 142 | { |
6afcd3b2 | 143 | int rv; |
02b754d3 | 144 | |
78446828 MV |
145 | object = SCM_COERCE_OUTPORT (object); |
146 | ||
3b3b36dd GB |
147 | SCM_VALIDATE_INUM (2,owner); |
148 | SCM_VALIDATE_INUM (3,group); | |
d831b039 | 149 | #ifdef HAVE_FCHOWN |
0c95b57d | 150 | if (SCM_INUMP (object) || (SCM_OPFPORTP (object))) |
6afcd3b2 | 151 | { |
d831b039 GH |
152 | int fdes = SCM_INUMP (object) ? SCM_INUM (object) |
153 | : SCM_FPORT_FDES (object); | |
154 | ||
6afcd3b2 GH |
155 | SCM_SYSCALL (rv = fchown (fdes, SCM_INUM (owner), SCM_INUM (group))); |
156 | } | |
157 | else | |
d831b039 | 158 | #endif |
6afcd3b2 | 159 | { |
a6d9e5ab DH |
160 | SCM_VALIDATE_STRING (1, object); |
161 | SCM_STRING_COERCE_0TERMINATION_X (object); | |
162 | SCM_SYSCALL (rv = chown (SCM_STRING_CHARS (object), | |
6afcd3b2 GH |
163 | SCM_INUM (owner), SCM_INUM (group))); |
164 | } | |
165 | if (rv == -1) | |
1bbd0b84 | 166 | SCM_SYSERROR; |
02b754d3 | 167 | return SCM_UNSPECIFIED; |
0f2d19dd | 168 | } |
1bbd0b84 | 169 | #undef FUNC_NAME |
0f2d19dd JB |
170 | |
171 | ||
a1ec6916 | 172 | SCM_DEFINE (scm_chmod, "chmod", 2, 0, 0, |
1bbd0b84 | 173 | (SCM object, SCM mode), |
d3818c29 MD |
174 | "Changes the permissions of the file referred to by @var{obj}.\n" |
175 | "@var{obj} can be a string containing a file name or a port or integer file\n" | |
176 | "descriptor which is open on a file (in which case @code{fchmod} is used\n" | |
177 | "as the underlying system call).\n" | |
178 | "@var{mode} specifies\n" | |
179 | "the new permissions as a decimal number, e.g., @code{(chmod \"foo\" #o755)}.\n" | |
180 | "The return value is unspecified.") | |
1bbd0b84 | 181 | #define FUNC_NAME s_scm_chmod |
0f2d19dd JB |
182 | { |
183 | int rv; | |
6afcd3b2 GH |
184 | int fdes; |
185 | ||
78446828 MV |
186 | object = SCM_COERCE_OUTPORT (object); |
187 | ||
3b3b36dd | 188 | SCM_VALIDATE_INUM (2,mode); |
0c95b57d | 189 | if (SCM_INUMP (object) || SCM_OPFPORTP (object)) |
89958ad0 | 190 | { |
6afcd3b2 GH |
191 | if (SCM_INUMP (object)) |
192 | fdes = SCM_INUM (object); | |
193 | else | |
77a76b64 | 194 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 | 195 | SCM_SYSCALL (rv = fchmod (fdes, SCM_INUM (mode))); |
89958ad0 | 196 | } |
0f2d19dd JB |
197 | else |
198 | { | |
a6d9e5ab DH |
199 | SCM_VALIDATE_STRING (1, object); |
200 | SCM_STRING_COERCE_0TERMINATION_X (object); | |
201 | SCM_SYSCALL (rv = chmod (SCM_STRING_CHARS (object), SCM_INUM (mode))); | |
0f2d19dd | 202 | } |
6afcd3b2 | 203 | if (rv == -1) |
1bbd0b84 | 204 | SCM_SYSERROR; |
02b754d3 | 205 | return SCM_UNSPECIFIED; |
0f2d19dd | 206 | } |
1bbd0b84 | 207 | #undef FUNC_NAME |
0f2d19dd | 208 | |
a1ec6916 | 209 | SCM_DEFINE (scm_umask, "umask", 0, 1, 0, |
1bbd0b84 | 210 | (SCM mode), |
d3818c29 MD |
211 | "If @var{mode} is omitted, retuns a decimal number representing the current\n" |
212 | "file creation mask. Otherwise the file creation mask is set to\n" | |
213 | "@var{mode} and the previous value is returned.\n\n" | |
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), |
1e6808ea MG |
236 | "Similar to @code{open} but return a file descriptor instead of\n" |
237 | "a 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 | |
a6d9e5ab DH |
244 | SCM_VALIDATE_STRING (1, path); |
245 | SCM_STRING_COERCE_0TERMINATION_X (path); | |
1be6b49c ML |
246 | iflags = SCM_NUM2INT (2, flags); |
247 | imode = SCM_NUM2INT_DEF (3, mode, 0666); | |
a6d9e5ab | 248 | SCM_SYSCALL (fd = open (SCM_STRING_CHARS (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), |
d3818c29 MD |
257 | "Open the file named by @var{path} for reading and/or writing.\n" |
258 | "@var{flags} is an integer specifying how the file should be opened.\n" | |
259 | "@var{mode} is an integer specifying the permission bits of the file, if\n" | |
260 | "it needs to be created, before the umask is applied. The default is 666\n" | |
261 | "(Unix itself has no default).\n\n" | |
262 | "@var{flags} can be constructed by combining variables using @code{logior}.\n" | |
263 | "Basic flags are:\n\n" | |
264 | "@defvar O_RDONLY\n" | |
265 | "Open the file read-only.\n" | |
266 | "@end defvar\n" | |
267 | "@defvar O_WRONLY\n" | |
268 | "Open the file write-only. \n" | |
269 | "@end defvar\n" | |
270 | "@defvar O_RDWR\n" | |
271 | "Open the file read/write.\n" | |
272 | "@end defvar\n" | |
273 | "@defvar O_APPEND\n" | |
274 | "Append to the file instead of truncating.\n" | |
275 | "@end defvar\n" | |
276 | "@defvar O_CREAT\n" | |
277 | "Create the file if it does not already exist.\n" | |
278 | "@end defvar\n\n" | |
279 | "See the Unix documentation of the @code{open} system call\n" | |
280 | "for additional flags.") | |
1bbd0b84 | 281 | #define FUNC_NAME s_scm_open |
6afcd3b2 GH |
282 | { |
283 | SCM newpt; | |
284 | char *port_mode; | |
285 | int fd; | |
6afcd3b2 GH |
286 | int iflags; |
287 | ||
288 | fd = SCM_INUM (scm_open_fdes (path, flags, mode)); | |
1be6b49c | 289 | iflags = SCM_NUM2INT (2, flags); |
3d8d56df | 290 | if (iflags & O_RDWR) |
77a76b64 JB |
291 | { |
292 | if (iflags & O_APPEND) | |
293 | port_mode = "a+"; | |
294 | else if (iflags & O_CREAT) | |
295 | port_mode = "w+"; | |
296 | else | |
297 | port_mode = "r+"; | |
298 | } | |
3d8d56df | 299 | else { |
77a76b64 JB |
300 | if (iflags & O_APPEND) |
301 | port_mode = "a"; | |
302 | else if (iflags & O_WRONLY) | |
3d8d56df GH |
303 | port_mode = "w"; |
304 | else | |
305 | port_mode = "r"; | |
306 | } | |
77a76b64 | 307 | newpt = scm_fdes_to_port (fd, port_mode, path); |
3d8d56df | 308 | return newpt; |
0f2d19dd | 309 | } |
1bbd0b84 | 310 | #undef FUNC_NAME |
0f2d19dd | 311 | |
a1ec6916 | 312 | SCM_DEFINE (scm_close, "close", 1, 0, 0, |
1bbd0b84 | 313 | (SCM fd_or_port), |
d3818c29 MD |
314 | "Similar to close-port (@pxref{Generic Port Operations, close-port}),\n" |
315 | "but also works on file descriptors. A side\n" | |
316 | "effect of closing a file descriptor is that any ports using that file\n" | |
317 | "descriptor are moved to a different file descriptor and have\n" | |
318 | "their revealed counts set to zero.") | |
1bbd0b84 | 319 | #define FUNC_NAME s_scm_close |
eadd48de GH |
320 | { |
321 | int rv; | |
322 | int fd; | |
323 | ||
78446828 MV |
324 | fd_or_port = SCM_COERCE_OUTPORT (fd_or_port); |
325 | ||
0c95b57d | 326 | if (SCM_PORTP (fd_or_port)) |
eadd48de | 327 | return scm_close_port (fd_or_port); |
3b3b36dd | 328 | SCM_VALIDATE_INUM (1,fd_or_port); |
eadd48de | 329 | fd = SCM_INUM (fd_or_port); |
eadd48de | 330 | scm_evict_ports (fd); /* see scsh manual. */ |
a9488d12 | 331 | SCM_SYSCALL (rv = close (fd)); |
eadd48de GH |
332 | /* following scsh, closing an already closed file descriptor is |
333 | not an error. */ | |
334 | if (rv < 0 && errno != EBADF) | |
1bbd0b84 GB |
335 | SCM_SYSERROR; |
336 | return SCM_NEGATE_BOOL(rv < 0); | |
eadd48de | 337 | } |
1bbd0b84 | 338 | #undef FUNC_NAME |
eadd48de | 339 | |
c2ca4493 GH |
340 | SCM_DEFINE (scm_close_fdes, "close-fdes", 1, 0, 0, |
341 | (SCM fd), | |
342 | "A simple wrapper for the @code{close} system call.\n" | |
343 | "Close file descriptor @var{fd}, which must be an integer.\n" | |
344 | "Unlike close (@pxref{Ports and File Descriptors, close}),\n" | |
345 | "the file descriptor will be closed even if a port is using it.\n" | |
346 | "The return value is unspecified.") | |
347 | #define FUNC_NAME s_scm_close_fdes | |
348 | { | |
349 | int c_fd; | |
350 | int rv; | |
351 | ||
352 | SCM_VALIDATE_INUM_COPY (1, fd, c_fd); | |
353 | SCM_SYSCALL (rv = close (c_fd)); | |
354 | if (rv < 0) | |
355 | SCM_SYSERROR; | |
356 | return SCM_UNSPECIFIED; | |
357 | } | |
358 | #undef FUNC_NAME | |
359 | ||
0f2d19dd JB |
360 | \f |
361 | /* {Files} | |
362 | */ | |
1cc91f1b | 363 | |
ae5253c5 GH |
364 | SCM_SYMBOL (scm_sym_regular, "regular"); |
365 | SCM_SYMBOL (scm_sym_directory, "directory"); | |
f326ecf3 | 366 | #ifdef HAVE_S_ISLNK |
ae5253c5 | 367 | SCM_SYMBOL (scm_sym_symlink, "symlink"); |
f326ecf3 | 368 | #endif |
ae5253c5 GH |
369 | SCM_SYMBOL (scm_sym_block_special, "block-special"); |
370 | SCM_SYMBOL (scm_sym_char_special, "char-special"); | |
371 | SCM_SYMBOL (scm_sym_fifo, "fifo"); | |
372 | SCM_SYMBOL (scm_sym_sock, "socket"); | |
373 | SCM_SYMBOL (scm_sym_unknown, "unknown"); | |
374 | ||
0f2d19dd | 375 | static SCM |
1bbd0b84 | 376 | scm_stat2scm (struct stat *stat_temp) |
0f2d19dd | 377 | { |
00ffa0e7 | 378 | SCM ans = scm_c_make_vector (15, SCM_UNSPECIFIED); |
0f2d19dd | 379 | SCM *ve = SCM_VELTS (ans); |
ae5253c5 | 380 | |
0f2d19dd JB |
381 | ve[0] = scm_ulong2num ((unsigned long) stat_temp->st_dev); |
382 | ve[1] = scm_ulong2num ((unsigned long) stat_temp->st_ino); | |
383 | ve[2] = scm_ulong2num ((unsigned long) stat_temp->st_mode); | |
384 | ve[3] = scm_ulong2num ((unsigned long) stat_temp->st_nlink); | |
385 | ve[4] = scm_ulong2num ((unsigned long) stat_temp->st_uid); | |
386 | ve[5] = scm_ulong2num ((unsigned long) stat_temp->st_gid); | |
1fd85bc5 | 387 | #ifdef HAVE_STRUCT_STAT_ST_RDEV |
0f2d19dd JB |
388 | ve[6] = scm_ulong2num ((unsigned long) stat_temp->st_rdev); |
389 | #else | |
390 | ve[6] = SCM_BOOL_F; | |
391 | #endif | |
392 | ve[7] = scm_ulong2num ((unsigned long) stat_temp->st_size); | |
393 | ve[8] = scm_ulong2num ((unsigned long) stat_temp->st_atime); | |
394 | ve[9] = scm_ulong2num ((unsigned long) stat_temp->st_mtime); | |
395 | ve[10] = scm_ulong2num ((unsigned long) stat_temp->st_ctime); | |
1fd85bc5 | 396 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
0f2d19dd JB |
397 | ve[11] = scm_ulong2num ((unsigned long) stat_temp->st_blksize); |
398 | #else | |
399 | ve[11] = scm_ulong2num (4096L); | |
400 | #endif | |
1fd85bc5 | 401 | #ifdef HAVE_STRUCT_STAT_ST_BLOCKS |
0f2d19dd JB |
402 | ve[12] = scm_ulong2num ((unsigned long) stat_temp->st_blocks); |
403 | #else | |
404 | ve[12] = SCM_BOOL_F; | |
405 | #endif | |
ae5253c5 GH |
406 | { |
407 | int mode = stat_temp->st_mode; | |
408 | ||
409 | if (S_ISREG (mode)) | |
410 | ve[13] = scm_sym_regular; | |
411 | else if (S_ISDIR (mode)) | |
412 | ve[13] = scm_sym_directory; | |
f326ecf3 | 413 | #ifdef HAVE_S_ISLNK |
ae5253c5 GH |
414 | else if (S_ISLNK (mode)) |
415 | ve[13] = scm_sym_symlink; | |
f326ecf3 | 416 | #endif |
ae5253c5 GH |
417 | else if (S_ISBLK (mode)) |
418 | ve[13] = scm_sym_block_special; | |
419 | else if (S_ISCHR (mode)) | |
420 | ve[13] = scm_sym_char_special; | |
421 | else if (S_ISFIFO (mode)) | |
422 | ve[13] = scm_sym_fifo; | |
e655d034 | 423 | #ifdef S_ISSOCK |
ae5253c5 GH |
424 | else if (S_ISSOCK (mode)) |
425 | ve[13] = scm_sym_sock; | |
e655d034 | 426 | #endif |
ae5253c5 GH |
427 | else |
428 | ve[13] = scm_sym_unknown; | |
429 | ||
430 | ve[14] = SCM_MAKINUM ((~S_IFMT) & mode); | |
431 | ||
432 | /* the layout of the bits in ve[14] is intended to be portable. | |
433 | If there are systems that don't follow the usual convention, | |
434 | the following could be used: | |
435 | ||
436 | tmp = 0; | |
437 | if (S_ISUID & mode) tmp += 1; | |
438 | tmp <<= 1; | |
439 | if (S_IRGRP & mode) tmp += 1; | |
440 | tmp <<= 1; | |
441 | if (S_ISVTX & mode) tmp += 1; | |
442 | tmp <<= 1; | |
443 | if (S_IRUSR & mode) tmp += 1; | |
444 | tmp <<= 1; | |
445 | if (S_IWUSR & mode) tmp += 1; | |
446 | tmp <<= 1; | |
447 | if (S_IXUSR & mode) tmp += 1; | |
448 | tmp <<= 1; | |
449 | if (S_IWGRP & mode) tmp += 1; | |
450 | tmp <<= 1; | |
451 | if (S_IXGRP & mode) tmp += 1; | |
452 | tmp <<= 1; | |
453 | if (S_IROTH & mode) tmp += 1; | |
454 | tmp <<= 1; | |
455 | if (S_IWOTH & mode) tmp += 1; | |
456 | tmp <<= 1; | |
457 | if (S_IXOTH & mode) tmp += 1; | |
458 | ||
459 | ve[14] = SCM_MAKINUM (tmp); | |
460 | ||
461 | */ | |
462 | } | |
0f2d19dd JB |
463 | |
464 | return ans; | |
465 | } | |
466 | ||
a1ec6916 | 467 | SCM_DEFINE (scm_stat, "stat", 1, 0, 0, |
1bbd0b84 | 468 | (SCM object), |
1e6808ea MG |
469 | "Return an object containing various information about the file\n" |
470 | "determined by @var{obj}. @var{obj} can be a string containing\n" | |
471 | "a file name or a port or integer file descriptor which is open\n" | |
472 | "on a file (in which case @code{fstat} is used as the underlying\n" | |
473 | "system call).\n" | |
474 | "\n" | |
475 | "The object returned by @code{stat} can be passed as a single\n" | |
476 | "parameter to the following procedures, all of which return\n" | |
477 | "integers:\n" | |
478 | "\n" | |
d3818c29 MD |
479 | "@table @code\n" |
480 | "@item stat:dev\n" | |
481 | "The device containing the file.\n" | |
482 | "@item stat:ino\n" | |
1e6808ea MG |
483 | "The file serial number, which distinguishes this file from all\n" |
484 | "other files on the same device.\n" | |
d3818c29 | 485 | "@item stat:mode\n" |
1e6808ea MG |
486 | "The mode of the file. This includes file type information and\n" |
487 | "the file permission bits. See @code{stat:type} and\n" | |
488 | "@code{stat:perms} below.\n" | |
d3818c29 MD |
489 | "@item stat:nlink\n" |
490 | "The number of hard links to the file.\n" | |
491 | "@item stat:uid\n" | |
492 | "The user ID of the file's owner.\n" | |
493 | "@item stat:gid\n" | |
494 | "The group ID of the file.\n" | |
495 | "@item stat:rdev\n" | |
496 | "Device ID; this entry is defined only for character or block\n" | |
497 | "special files.\n" | |
498 | "@item stat:size\n" | |
499 | "The size of a regular file in bytes.\n" | |
500 | "@item stat:atime\n" | |
501 | "The last access time for the file.\n" | |
502 | "@item stat:mtime\n" | |
503 | "The last modification time for the file.\n" | |
504 | "@item stat:ctime\n" | |
505 | "The last modification time for the attributes of the file.\n" | |
506 | "@item stat:blksize\n" | |
1e6808ea MG |
507 | "The optimal block size for reading or writing the file, in\n" |
508 | "bytes.\n" | |
d3818c29 | 509 | "@item stat:blocks\n" |
1e6808ea MG |
510 | "The amount of disk space that the file occupies measured in\n" |
511 | "units of 512 byte blocks.\n" | |
512 | "@end table\n" | |
513 | "\n" | |
d3818c29 | 514 | "In addition, the following procedures return the information\n" |
1e6808ea MG |
515 | "from stat:mode in a more convenient form:\n" |
516 | "\n" | |
d3818c29 MD |
517 | "@table @code\n" |
518 | "@item stat:type\n" | |
519 | "A symbol representing the type of file. Possible values are\n" | |
1e6808ea MG |
520 | "regular, directory, symlink, block-special, char-special, fifo,\n" |
521 | "socket and unknown\n" | |
d3818c29 MD |
522 | "@item stat:perms\n" |
523 | "An integer representing the access permission bits.\n" | |
524 | "@end table") | |
1bbd0b84 | 525 | #define FUNC_NAME s_scm_stat |
0f2d19dd | 526 | { |
6afcd3b2 GH |
527 | int rv; |
528 | int fdes; | |
0f2d19dd JB |
529 | struct stat stat_temp; |
530 | ||
1ea47048 MD |
531 | if (SCM_INUMP (object)) |
532 | SCM_SYSCALL (rv = fstat (SCM_INUM (object), &stat_temp)); | |
533 | else | |
0f2d19dd | 534 | { |
6b5a304f | 535 | SCM_VALIDATE_NIM (1,object); |
a6d9e5ab | 536 | if (SCM_STRINGP (object)) |
1ea47048 | 537 | { |
a6d9e5ab DH |
538 | SCM_STRING_COERCE_0TERMINATION_X (object); |
539 | SCM_SYSCALL (rv = stat (SCM_STRING_CHARS (object), &stat_temp)); | |
1ea47048 | 540 | } |
c0ebd8c5 | 541 | else |
0f2d19dd | 542 | { |
1ea47048 | 543 | object = SCM_COERCE_OUTPORT (object); |
c1bfcf60 | 544 | SCM_VALIDATE_OPFPORT(1,object); |
77a76b64 | 545 | fdes = SCM_FPORT_FDES (object); |
1ea47048 | 546 | SCM_SYSCALL (rv = fstat (fdes, &stat_temp)); |
0f2d19dd | 547 | } |
6afcd3b2 GH |
548 | } |
549 | if (rv == -1) | |
3d8d56df GH |
550 | { |
551 | int en = errno; | |
552 | ||
5d2d2ffc | 553 | SCM_SYSERROR_MSG ("~A: ~S", |
e0c08f17 KN |
554 | SCM_LIST2 (scm_makfrom0str (strerror (errno)), object), |
555 | en); | |
3d8d56df | 556 | } |
02b754d3 | 557 | return scm_stat2scm (&stat_temp); |
0f2d19dd | 558 | } |
1bbd0b84 | 559 | #undef FUNC_NAME |
0f2d19dd | 560 | |
0f2d19dd JB |
561 | \f |
562 | /* {Modifying Directories} | |
563 | */ | |
564 | ||
a1ec6916 | 565 | SCM_DEFINE (scm_link, "link", 2, 0, 0, |
1bbd0b84 | 566 | (SCM oldpath, SCM newpath), |
6d36532c GH |
567 | "Creates a new name @var{newpath} in the file system for the\n" |
568 | "file named by @var{oldpath}. If @var{oldpath} is a symbolic\n" | |
569 | "link, the link may or may not be followed depending on the\n" | |
570 | "system.") | |
1bbd0b84 | 571 | #define FUNC_NAME s_scm_link |
0f2d19dd JB |
572 | { |
573 | int val; | |
02b754d3 | 574 | |
a6d9e5ab DH |
575 | SCM_VALIDATE_STRING (1, oldpath); |
576 | SCM_STRING_COERCE_0TERMINATION_X (oldpath); | |
577 | SCM_VALIDATE_STRING (2, newpath); | |
578 | SCM_STRING_COERCE_0TERMINATION_X (newpath); | |
6d36532c GH |
579 | SCM_SYSCALL (val = link (SCM_STRING_CHARS (oldpath), |
580 | SCM_STRING_CHARS (newpath))); | |
02b754d3 | 581 | if (val != 0) |
1bbd0b84 | 582 | SCM_SYSERROR; |
02b754d3 | 583 | return SCM_UNSPECIFIED; |
0f2d19dd | 584 | } |
1bbd0b84 | 585 | #undef FUNC_NAME |
0f2d19dd JB |
586 | |
587 | ||
588 | ||
a1ec6916 | 589 | SCM_DEFINE (scm_rename, "rename-file", 2, 0, 0, |
1bbd0b84 | 590 | (SCM oldname, SCM newname), |
6d36532c | 591 | "Renames the file specified by @var{oldname} to @var{newname}.\n" |
d3818c29 | 592 | "The return value is unspecified.") |
1bbd0b84 | 593 | #define FUNC_NAME s_scm_rename |
0f2d19dd JB |
594 | { |
595 | int rv; | |
a6d9e5ab DH |
596 | SCM_VALIDATE_STRING (1, oldname); |
597 | SCM_VALIDATE_STRING (2, newname); | |
598 | SCM_STRING_COERCE_0TERMINATION_X (oldname); | |
599 | SCM_STRING_COERCE_0TERMINATION_X (newname); | |
0f2d19dd | 600 | #ifdef HAVE_RENAME |
a6d9e5ab | 601 | SCM_SYSCALL (rv = rename (SCM_STRING_CHARS (oldname), SCM_STRING_CHARS (newname))); |
0f2d19dd | 602 | #else |
a6d9e5ab | 603 | SCM_SYSCALL (rv = link (SCM_STRING_CHARS (oldname), SCM_STRING_CHARS (newname))); |
02b754d3 | 604 | if (rv == 0) |
0f2d19dd | 605 | { |
a6d9e5ab | 606 | SCM_SYSCALL (rv = unlink (SCM_STRING_CHARS (oldname)));; |
02b754d3 | 607 | if (rv != 0) |
0f2d19dd | 608 | /* unlink failed. remove new name */ |
a6d9e5ab | 609 | SCM_SYSCALL (unlink (SCM_STRING_CHARS (newname))); |
0f2d19dd | 610 | } |
6afcd3b2 | 611 | #endif |
02b754d3 | 612 | if (rv != 0) |
1bbd0b84 | 613 | SCM_SYSERROR; |
02b754d3 | 614 | return SCM_UNSPECIFIED; |
0f2d19dd | 615 | } |
1bbd0b84 | 616 | #undef FUNC_NAME |
0f2d19dd JB |
617 | |
618 | ||
3b3b36dd | 619 | SCM_DEFINE (scm_delete_file, "delete-file", 1, 0, 0, |
1bbd0b84 | 620 | (SCM str), |
d3818c29 | 621 | "Deletes (or \"unlinks\") the file specified by @var{path}.") |
1bbd0b84 | 622 | #define FUNC_NAME s_scm_delete_file |
2f3ed1ba JB |
623 | { |
624 | int ans; | |
a6d9e5ab DH |
625 | SCM_VALIDATE_STRING (1, str); |
626 | SCM_STRING_COERCE_0TERMINATION_X (str); | |
627 | SCM_SYSCALL (ans = unlink (SCM_STRING_CHARS (str))); | |
2f3ed1ba | 628 | if (ans != 0) |
1bbd0b84 | 629 | SCM_SYSERROR; |
2f3ed1ba JB |
630 | return SCM_UNSPECIFIED; |
631 | } | |
1bbd0b84 | 632 | #undef FUNC_NAME |
2f3ed1ba | 633 | |
f25f761d | 634 | #ifdef HAVE_MKDIR |
a1ec6916 | 635 | SCM_DEFINE (scm_mkdir, "mkdir", 1, 1, 0, |
1bbd0b84 | 636 | (SCM path, SCM mode), |
d3818c29 MD |
637 | "Create a new directory named by @var{path}. If @var{mode} is omitted\n" |
638 | "then the permissions of the directory file are set using the current\n" | |
639 | "umask. Otherwise they are set to the decimal value specified with\n" | |
640 | "@var{mode}. The return value is unspecified.") | |
1bbd0b84 | 641 | #define FUNC_NAME s_scm_mkdir |
0f2d19dd | 642 | { |
0f2d19dd JB |
643 | int rv; |
644 | mode_t mask; | |
a6d9e5ab DH |
645 | SCM_VALIDATE_STRING (1, path); |
646 | SCM_STRING_COERCE_0TERMINATION_X (path); | |
0f2d19dd JB |
647 | if (SCM_UNBNDP (mode)) |
648 | { | |
649 | mask = umask (0); | |
650 | umask (mask); | |
a6d9e5ab | 651 | SCM_SYSCALL (rv = mkdir (SCM_STRING_CHARS (path), 0777 ^ mask)); |
0f2d19dd JB |
652 | } |
653 | else | |
654 | { | |
3b3b36dd | 655 | SCM_VALIDATE_INUM (2,mode); |
a6d9e5ab | 656 | SCM_SYSCALL (rv = mkdir (SCM_STRING_CHARS (path), SCM_INUM (mode))); |
0f2d19dd | 657 | } |
02b754d3 | 658 | if (rv != 0) |
1bbd0b84 | 659 | SCM_SYSERROR; |
02b754d3 | 660 | return SCM_UNSPECIFIED; |
0f2d19dd | 661 | } |
1bbd0b84 | 662 | #undef FUNC_NAME |
f25f761d | 663 | #endif /* HAVE_MKDIR */ |
0f2d19dd | 664 | |
f25f761d | 665 | #ifdef HAVE_RMDIR |
a1ec6916 | 666 | SCM_DEFINE (scm_rmdir, "rmdir", 1, 0, 0, |
1bbd0b84 | 667 | (SCM path), |
d3818c29 MD |
668 | "Remove the existing directory named by @var{path}. The directory must\n" |
669 | "be empty for this to succeed. The return value is unspecified.") | |
1bbd0b84 | 670 | #define FUNC_NAME s_scm_rmdir |
0f2d19dd | 671 | { |
0f2d19dd | 672 | int val; |
02b754d3 | 673 | |
a6d9e5ab DH |
674 | SCM_VALIDATE_STRING (1, path); |
675 | SCM_STRING_COERCE_0TERMINATION_X (path); | |
676 | SCM_SYSCALL (val = rmdir (SCM_STRING_CHARS (path))); | |
02b754d3 | 677 | if (val != 0) |
1bbd0b84 | 678 | SCM_SYSERROR; |
02b754d3 | 679 | return SCM_UNSPECIFIED; |
0f2d19dd | 680 | } |
1bbd0b84 | 681 | #undef FUNC_NAME |
f25f761d | 682 | #endif |
0f2d19dd JB |
683 | |
684 | \f | |
30ea841d | 685 | |
0f2d19dd JB |
686 | /* {Examining Directories} |
687 | */ | |
688 | ||
92c2555f | 689 | scm_t_bits scm_tc16_dir; |
0f2d19dd | 690 | |
30ea841d | 691 | |
a1ec6916 | 692 | SCM_DEFINE (scm_directory_stream_p, "directory-stream?", 1, 0, 0, |
1bbd0b84 | 693 | (SCM obj), |
1e6808ea MG |
694 | "Return a boolean indicating whether @var{object} is a directory\n" |
695 | "stream as returned by @code{opendir}.") | |
1bbd0b84 | 696 | #define FUNC_NAME s_scm_directory_stream_p |
77242ff9 | 697 | { |
30ea841d | 698 | return SCM_BOOL (SCM_DIRP (obj)); |
77242ff9 | 699 | } |
1bbd0b84 | 700 | #undef FUNC_NAME |
77242ff9 | 701 | |
30ea841d | 702 | |
a1ec6916 | 703 | SCM_DEFINE (scm_opendir, "opendir", 1, 0, 0, |
1bbd0b84 | 704 | (SCM dirname), |
d3818c29 MD |
705 | "Open the directory specified by @var{path} and return a directory\n" |
706 | "stream.") | |
1bbd0b84 | 707 | #define FUNC_NAME s_scm_opendir |
0f2d19dd JB |
708 | { |
709 | DIR *ds; | |
a6d9e5ab DH |
710 | SCM_VALIDATE_STRING (1, dirname); |
711 | SCM_STRING_COERCE_0TERMINATION_X (dirname); | |
712 | SCM_SYSCALL (ds = opendir (SCM_STRING_CHARS (dirname))); | |
02b754d3 | 713 | if (ds == NULL) |
1bbd0b84 | 714 | SCM_SYSERROR; |
30ea841d | 715 | SCM_RETURN_NEWSMOB (scm_tc16_dir | SCM_DIR_FLAG_OPEN, ds); |
0f2d19dd | 716 | } |
1bbd0b84 | 717 | #undef FUNC_NAME |
0f2d19dd JB |
718 | |
719 | ||
a1ec6916 | 720 | SCM_DEFINE (scm_readdir, "readdir", 1, 0, 0, |
1bbd0b84 | 721 | (SCM port), |
d3818c29 MD |
722 | "Return (as a string) the next directory entry from the directory stream\n" |
723 | "@var{stream}. If there is no remaining entry to be read then the\n" | |
724 | "end of file object is returned.") | |
1bbd0b84 | 725 | #define FUNC_NAME s_scm_readdir |
0f2d19dd JB |
726 | { |
727 | struct dirent *rdent; | |
30ea841d DH |
728 | |
729 | SCM_VALIDATE_DIR (1, port); | |
730 | if (!SCM_DIR_OPEN_P (port)) | |
731 | SCM_MISC_ERROR ("Directory ~S is not open.", SCM_LIST1 (port)); | |
732 | ||
0f2d19dd | 733 | errno = 0; |
4260a7fc | 734 | SCM_SYSCALL (rdent = readdir ((DIR *) SCM_CELL_WORD_1 (port))); |
02b754d3 | 735 | if (errno != 0) |
1bbd0b84 | 736 | SCM_SYSERROR; |
30ea841d | 737 | |
02b754d3 GH |
738 | return (rdent ? scm_makfromstr (rdent->d_name, NAMLEN (rdent), 0) |
739 | : SCM_EOF_VAL); | |
0f2d19dd | 740 | } |
1bbd0b84 | 741 | #undef FUNC_NAME |
0f2d19dd JB |
742 | |
743 | ||
a1ec6916 | 744 | SCM_DEFINE (scm_rewinddir, "rewinddir", 1, 0, 0, |
1bbd0b84 | 745 | (SCM port), |
d3818c29 MD |
746 | "Reset the directory port @var{stream} so that the next call to\n" |
747 | "@code{readdir} will return the first directory entry.") | |
1bbd0b84 | 748 | #define FUNC_NAME s_scm_rewinddir |
0f2d19dd | 749 | { |
30ea841d DH |
750 | SCM_VALIDATE_DIR (1, port); |
751 | if (!SCM_DIR_OPEN_P (port)) | |
752 | SCM_MISC_ERROR ("Directory ~S is not open.", SCM_LIST1 (port)); | |
753 | ||
4260a7fc | 754 | rewinddir ((DIR *) SCM_CELL_WORD_1 (port)); |
30ea841d | 755 | |
0f2d19dd JB |
756 | return SCM_UNSPECIFIED; |
757 | } | |
1bbd0b84 | 758 | #undef FUNC_NAME |
0f2d19dd JB |
759 | |
760 | ||
a1ec6916 | 761 | SCM_DEFINE (scm_closedir, "closedir", 1, 0, 0, |
1bbd0b84 | 762 | (SCM port), |
d3818c29 MD |
763 | "Close the directory stream @var{stream}.\n" |
764 | "The return value is unspecified.") | |
1bbd0b84 | 765 | #define FUNC_NAME s_scm_closedir |
0f2d19dd | 766 | { |
30ea841d | 767 | SCM_VALIDATE_DIR (1, port); |
02b754d3 | 768 | |
30ea841d | 769 | if (SCM_DIR_OPEN_P (port)) |
0f2d19dd | 770 | { |
30ea841d DH |
771 | int sts; |
772 | ||
773 | SCM_SYSCALL (sts = closedir ((DIR *) SCM_CELL_WORD_1 (port))); | |
774 | if (sts != 0) | |
775 | SCM_SYSERROR; | |
776 | ||
777 | SCM_SET_CELL_WORD_0 (port, scm_tc16_dir); | |
0f2d19dd | 778 | } |
30ea841d | 779 | |
02b754d3 | 780 | return SCM_UNSPECIFIED; |
0f2d19dd | 781 | } |
1bbd0b84 | 782 | #undef FUNC_NAME |
0f2d19dd JB |
783 | |
784 | ||
0f2d19dd | 785 | static int |
e81d98ec | 786 | scm_dir_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
0f2d19dd | 787 | { |
f8b16091 | 788 | scm_puts ("#<", port); |
30ea841d | 789 | if (!SCM_DIR_OPEN_P (exp)) |
f8b16091 | 790 | scm_puts ("closed: ", port); |
0d03da62 | 791 | scm_puts ("directory stream ", port); |
4260a7fc | 792 | scm_intprint (SCM_CELL_WORD_1 (exp), 16, port); |
f8b16091 | 793 | scm_putc ('>', port); |
0f2d19dd JB |
794 | return 1; |
795 | } | |
796 | ||
1cc91f1b | 797 | |
1be6b49c | 798 | static size_t |
1bbd0b84 | 799 | scm_dir_free (SCM p) |
0f2d19dd | 800 | { |
30ea841d | 801 | if (SCM_DIR_OPEN_P (p)) |
4260a7fc | 802 | closedir ((DIR *) SCM_CELL_WORD_1 (p)); |
0f2d19dd JB |
803 | return 0; |
804 | } | |
805 | ||
0f2d19dd JB |
806 | \f |
807 | /* {Navigating Directories} | |
808 | */ | |
809 | ||
810 | ||
a1ec6916 | 811 | SCM_DEFINE (scm_chdir, "chdir", 1, 0, 0, |
1bbd0b84 | 812 | (SCM str), |
d3818c29 MD |
813 | "Change the current working directory to @var{path}.\n" |
814 | "The return value is unspecified.") | |
1bbd0b84 | 815 | #define FUNC_NAME s_scm_chdir |
0f2d19dd JB |
816 | { |
817 | int ans; | |
02b754d3 | 818 | |
a6d9e5ab DH |
819 | SCM_VALIDATE_STRING (1, str); |
820 | SCM_STRING_COERCE_0TERMINATION_X (str); | |
821 | SCM_SYSCALL (ans = chdir (SCM_STRING_CHARS (str))); | |
02b754d3 | 822 | if (ans != 0) |
1bbd0b84 | 823 | SCM_SYSERROR; |
02b754d3 | 824 | return SCM_UNSPECIFIED; |
0f2d19dd | 825 | } |
1bbd0b84 | 826 | #undef FUNC_NAME |
0f2d19dd | 827 | |
f25f761d | 828 | #ifdef HAVE_GETCWD |
a1ec6916 | 829 | SCM_DEFINE (scm_getcwd, "getcwd", 0, 0, 0, |
1bbd0b84 | 830 | (), |
1e6808ea | 831 | "Return the name of the current working directory.") |
1bbd0b84 | 832 | #define FUNC_NAME s_scm_getcwd |
0f2d19dd | 833 | { |
0f2d19dd | 834 | char *rv; |
1be6b49c | 835 | size_t size = 100; |
0f2d19dd JB |
836 | char *wd; |
837 | SCM result; | |
838 | ||
1bbd0b84 | 839 | wd = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd JB |
840 | while ((rv = getcwd (wd, size)) == 0 && errno == ERANGE) |
841 | { | |
842 | scm_must_free (wd); | |
843 | size *= 2; | |
1bbd0b84 | 844 | wd = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd | 845 | } |
02b754d3 | 846 | if (rv == 0) |
1bbd0b84 | 847 | SCM_SYSERROR; |
02b754d3 | 848 | result = scm_makfromstr (wd, strlen (wd), 0); |
0f2d19dd | 849 | scm_must_free (wd); |
0f2d19dd | 850 | return result; |
0f2d19dd | 851 | } |
1bbd0b84 | 852 | #undef FUNC_NAME |
f25f761d | 853 | #endif /* HAVE_GETCWD */ |
0f2d19dd JB |
854 | |
855 | \f | |
856 | ||
28d77376 GH |
857 | #ifdef HAVE_SELECT |
858 | ||
859 | /* check that element is a port or file descriptor. if it's a port | |
860 | and its buffer is ready for use, add it to the ports_ready list. | |
861 | otherwise add its file descriptor to *set. the type of list can be | |
862 | determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes, | |
863 | SCM_ARG3 for excepts. */ | |
cafc12ff | 864 | static int |
28d77376 | 865 | set_element (SELECT_TYPE *set, SCM *ports_ready, SCM element, int pos) |
a48a89bc | 866 | { |
cafc12ff | 867 | int fd; |
d831b039 | 868 | |
28d77376 GH |
869 | if (SCM_INUMP (element)) |
870 | { | |
871 | fd = SCM_INUM (element); | |
872 | } | |
873 | else | |
874 | { | |
875 | int use_buf = 0; | |
876 | ||
877 | element = SCM_COERCE_OUTPORT (element); | |
878 | SCM_ASSERT (SCM_OPFPORTP (element), element, pos, "select"); | |
879 | if (pos == SCM_ARG1) | |
880 | { | |
881 | /* check whether port has buffered input. */ | |
92c2555f | 882 | scm_t_port *pt = SCM_PTAB_ENTRY (element); |
28d77376 GH |
883 | |
884 | if (pt->read_pos < pt->read_end) | |
885 | use_buf = 1; | |
886 | } | |
887 | else if (pos == SCM_ARG2) | |
888 | { | |
889 | /* check whether port's output buffer has room. */ | |
92c2555f | 890 | scm_t_port *pt = SCM_PTAB_ENTRY (element); |
28d77376 GH |
891 | |
892 | /* > 1 since writing the last byte in the buffer causes flush. */ | |
893 | if (pt->write_end - pt->write_pos > 1) | |
894 | use_buf = 1; | |
895 | } | |
896 | fd = use_buf ? -1 : SCM_FPORT_FDES (element); | |
897 | } | |
898 | if (fd == -1) | |
899 | *ports_ready = scm_cons (element, *ports_ready); | |
900 | else | |
901 | FD_SET (fd, set); | |
cafc12ff | 902 | return fd; |
a48a89bc | 903 | } |
1cc91f1b | 904 | |
28d77376 GH |
905 | /* check list_or_vec, a list or vector of ports or file descriptors, |
906 | adding each member to either the ports_ready list (if it's a port | |
907 | with a usable buffer) or to *set. the kind of list_or_vec can be | |
908 | determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes, | |
909 | SCM_ARG3 for excepts. */ | |
cafc12ff | 910 | static int |
28d77376 | 911 | fill_select_type (SELECT_TYPE *set, SCM *ports_ready, SCM list_or_vec, int pos) |
0f2d19dd | 912 | { |
28d77376 GH |
913 | int max_fd = 0; |
914 | ||
915 | if (SCM_VECTORP (list_or_vec)) | |
0f2d19dd | 916 | { |
9fd38a3d | 917 | int i = SCM_VECTOR_LENGTH (list_or_vec); |
28d77376 | 918 | SCM *ve = SCM_VELTS (list_or_vec); |
a48a89bc | 919 | |
28d77376 | 920 | while (--i >= 0) |
a48a89bc | 921 | { |
28d77376 GH |
922 | int fd = set_element (set, ports_ready, ve[i], pos); |
923 | ||
cafc12ff MD |
924 | if (fd > max_fd) |
925 | max_fd = fd; | |
a48a89bc GH |
926 | } |
927 | } | |
928 | else | |
929 | { | |
4260a7fc | 930 | while (!SCM_NULLP (list_or_vec)) |
a48a89bc | 931 | { |
28d77376 GH |
932 | int fd = set_element (set, ports_ready, SCM_CAR (list_or_vec), pos); |
933 | ||
cafc12ff MD |
934 | if (fd > max_fd) |
935 | max_fd = fd; | |
28d77376 | 936 | list_or_vec = SCM_CDR (list_or_vec); |
a48a89bc | 937 | } |
0f2d19dd | 938 | } |
cafc12ff MD |
939 | |
940 | return max_fd; | |
0f2d19dd JB |
941 | } |
942 | ||
28d77376 GH |
943 | /* if element (a file descriptor or port) appears in *set, cons it to |
944 | list. return list. */ | |
a48a89bc GH |
945 | static SCM |
946 | get_element (SELECT_TYPE *set, SCM element, SCM list) | |
947 | { | |
28d77376 GH |
948 | int fd; |
949 | ||
950 | if (SCM_INUMP (element)) | |
a48a89bc | 951 | { |
28d77376 | 952 | fd = SCM_INUM (element); |
a48a89bc | 953 | } |
28d77376 | 954 | else |
a48a89bc | 955 | { |
28d77376 | 956 | fd = SCM_FPORT_FDES (SCM_COERCE_OUTPORT (element)); |
a48a89bc | 957 | } |
28d77376 GH |
958 | if (FD_ISSET (fd, set)) |
959 | list = scm_cons (element, list); | |
a48a89bc GH |
960 | return list; |
961 | } | |
1cc91f1b | 962 | |
28d77376 GH |
963 | /* construct component of scm_select return value. |
964 | set: pointer to set of file descriptors found by select to be ready | |
965 | ports_ready: ports ready due to buffering | |
966 | list_or_vec: original list/vector handed to scm_select. | |
967 | the return value is a list/vector of ready ports/file descriptors. | |
968 | works by finding the objects in list which correspond to members of | |
969 | *set and appending them to ports_ready. result is converted to a | |
970 | vector if list_or_vec is a vector. */ | |
0f2d19dd | 971 | static SCM |
28d77376 | 972 | retrieve_select_type (SELECT_TYPE *set, SCM ports_ready, SCM list_or_vec) |
0f2d19dd | 973 | { |
28d77376 | 974 | SCM answer_list = ports_ready; |
a48a89bc | 975 | |
28d77376 | 976 | if (SCM_VECTORP (list_or_vec)) |
0f2d19dd | 977 | { |
9fd38a3d | 978 | int i = SCM_VECTOR_LENGTH (list_or_vec); |
28d77376 | 979 | SCM *ve = SCM_VELTS (list_or_vec); |
a48a89bc | 980 | |
28d77376 | 981 | while (--i >= 0) |
0f2d19dd | 982 | { |
28d77376 | 983 | answer_list = get_element (set, ve[i], answer_list); |
0f2d19dd | 984 | } |
a48a89bc GH |
985 | return scm_vector (answer_list); |
986 | } | |
987 | else | |
988 | { | |
28d77376 | 989 | /* list_or_vec must be a list. */ |
4260a7fc | 990 | while (!SCM_NULLP (list_or_vec)) |
0f2d19dd | 991 | { |
28d77376 GH |
992 | answer_list = get_element (set, SCM_CAR (list_or_vec), answer_list); |
993 | list_or_vec = SCM_CDR (list_or_vec); | |
0f2d19dd | 994 | } |
a48a89bc | 995 | return answer_list; |
0f2d19dd | 996 | } |
0f2d19dd JB |
997 | } |
998 | ||
1bbd0b84 | 999 | /* Static helper functions above refer to s_scm_select directly as s_select */ |
a1ec6916 | 1000 | SCM_DEFINE (scm_select, "select", 3, 2, 0, |
1bbd0b84 | 1001 | (SCM reads, SCM writes, SCM excepts, SCM secs, SCM usecs), |
28d77376 GH |
1002 | "This procedure has a variety of uses: waiting for the ability\n" |
1003 | "to provide input, accept output, or the existance of\n" | |
1004 | "exceptional conditions on a collection of ports or file\n" | |
1005 | "descriptors, or waiting for a timeout to occur.\n" | |
1006 | "It also returns if interrupted by a signal.\n\n" | |
1007 | "@var{reads}, @var{writes} and @var{excepts} can be lists or\n" | |
1008 | "vectors, with each member a port or a file descriptor.\n" | |
1009 | "The value returned is a list of three corresponding\n" | |
1010 | "lists or vectors containing only the members which meet the\n" | |
1011 | "specified requirement. The ability of port buffers to\n" | |
1012 | "provide input or accept output is taken into account.\n" | |
1013 | "Ordering of the input lists or vectors is not preserved.\n\n" | |
1014 | "The optional arguments @var{secs} and @var{usecs} specify the\n" | |
1015 | "timeout. Either @var{secs} can be specified alone, as\n" | |
1016 | "either an integer or a real number, or both @var{secs} and\n" | |
1017 | "@var{usecs} can be specified as integers, in which case\n" | |
1018 | "@var{usecs} is an additional timeout expressed in\n" | |
1019 | "microseconds. If @var{secs} is omitted or is @code{#f} then\n" | |
1020 | "select will wait for as long as it takes for one of the other\n" | |
1021 | "conditions to be satisfied.\n\n" | |
1022 | "The scsh version of @code{select} differs as follows:\n" | |
1023 | "Only vectors are accepted for the first three arguments.\n" | |
1024 | "The @var{usecs} argument is not supported.\n" | |
1025 | "Multiple values are returned instead of a list.\n" | |
1026 | "Duplicates in the input vectors appear only once in output.\n" | |
1027 | "An additional @code{select!} interface is provided.\n" | |
1028 | ) | |
1bbd0b84 | 1029 | #define FUNC_NAME s_scm_select |
0f2d19dd | 1030 | { |
0f2d19dd | 1031 | struct timeval timeout; |
28d77376 | 1032 | struct timeval * time_ptr; |
0f2d19dd JB |
1033 | SELECT_TYPE read_set; |
1034 | SELECT_TYPE write_set; | |
1035 | SELECT_TYPE except_set; | |
28d77376 GH |
1036 | int read_count; |
1037 | int write_count; | |
1038 | int except_count; | |
1039 | /* these lists accumulate ports which are ready due to buffering. | |
1040 | their file descriptors don't need to be added to the select sets. */ | |
1041 | SCM read_ports_ready = SCM_EOL; | |
1042 | SCM write_ports_ready = SCM_EOL; | |
1043 | int max_fd; | |
1044 | ||
1045 | if (SCM_VECTORP (reads)) | |
1046 | { | |
9fd38a3d | 1047 | read_count = SCM_VECTOR_LENGTH (reads); |
28d77376 GH |
1048 | } |
1049 | else | |
1050 | { | |
1051 | read_count = scm_ilength (reads); | |
1052 | SCM_ASSERT (read_count >= 0, reads, SCM_ARG1, FUNC_NAME); | |
1053 | } | |
1054 | if (SCM_VECTORP (writes)) | |
1055 | { | |
9fd38a3d | 1056 | write_count = SCM_VECTOR_LENGTH (writes); |
28d77376 GH |
1057 | } |
1058 | else | |
1059 | { | |
1060 | write_count = scm_ilength (writes); | |
1061 | SCM_ASSERT (write_count >= 0, writes, SCM_ARG2, FUNC_NAME); | |
1062 | } | |
1063 | if (SCM_VECTORP (excepts)) | |
1064 | { | |
9fd38a3d | 1065 | except_count = SCM_VECTOR_LENGTH (excepts); |
28d77376 GH |
1066 | } |
1067 | else | |
1068 | { | |
1069 | except_count = scm_ilength (excepts); | |
1070 | SCM_ASSERT (except_count >= 0, excepts, SCM_ARG3, FUNC_NAME); | |
1071 | } | |
0f2d19dd JB |
1072 | |
1073 | FD_ZERO (&read_set); | |
1074 | FD_ZERO (&write_set); | |
1075 | FD_ZERO (&except_set); | |
1076 | ||
28d77376 GH |
1077 | max_fd = fill_select_type (&read_set, &read_ports_ready, reads, SCM_ARG1); |
1078 | ||
1079 | { | |
1080 | int write_max = fill_select_type (&write_set, &write_ports_ready, | |
1081 | writes, SCM_ARG2); | |
1082 | int except_max = fill_select_type (&except_set, NULL, | |
1083 | excepts, SCM_ARG3); | |
1084 | ||
1085 | if (write_max > max_fd) | |
1086 | max_fd = write_max; | |
1087 | if (except_max > max_fd) | |
1088 | max_fd = except_max; | |
1089 | } | |
0f2d19dd | 1090 | |
ae1b098b GH |
1091 | /* if there's a port with a ready buffer, don't block, just |
1092 | check for ready file descriptors. */ | |
4260a7fc | 1093 | if (!SCM_NULLP (read_ports_ready) || !SCM_NULLP (write_ports_ready)) |
ae1b098b GH |
1094 | { |
1095 | timeout.tv_sec = 0; | |
1096 | timeout.tv_usec = 0; | |
1097 | time_ptr = &timeout; | |
1098 | } | |
1099 | else if (SCM_UNBNDP (secs) || SCM_FALSEP (secs)) | |
28d77376 | 1100 | time_ptr = 0; |
0f2d19dd JB |
1101 | else |
1102 | { | |
ae1b098b | 1103 | if (SCM_INUMP (secs)) |
a48a89bc GH |
1104 | { |
1105 | timeout.tv_sec = SCM_INUM (secs); | |
1106 | if (SCM_UNBNDP (usecs)) | |
1107 | timeout.tv_usec = 0; | |
1108 | else | |
1109 | { | |
3b3b36dd | 1110 | SCM_VALIDATE_INUM (5,usecs); |
a48a89bc GH |
1111 | timeout.tv_usec = SCM_INUM (usecs); |
1112 | } | |
1113 | } | |
0f2d19dd | 1114 | else |
a48a89bc | 1115 | { |
1bbd0b84 | 1116 | double fl = scm_num2dbl (secs, FUNC_NAME); |
a48a89bc GH |
1117 | |
1118 | if (!SCM_UNBNDP (usecs)) | |
c1bfcf60 | 1119 | SCM_WRONG_TYPE_ARG (4, secs); |
a48a89bc | 1120 | if (fl > LONG_MAX) |
c1bfcf60 | 1121 | SCM_OUT_OF_RANGE (4, secs); |
a48a89bc GH |
1122 | timeout.tv_sec = (long) fl; |
1123 | timeout.tv_usec = (long) ((fl - timeout.tv_sec) * 1000000); | |
1124 | } | |
28d77376 | 1125 | time_ptr = &timeout; |
0f2d19dd JB |
1126 | } |
1127 | ||
28d77376 | 1128 | { |
44e8413c | 1129 | #ifdef GUILE_ISELECT |
28d77376 GH |
1130 | int rv = scm_internal_select (max_fd + 1, |
1131 | &read_set, &write_set, &except_set, | |
1132 | time_ptr); | |
44e8413c | 1133 | #else |
28d77376 GH |
1134 | int rv = select (max_fd + 1, |
1135 | &read_set, &write_set, &except_set, time_ptr); | |
44e8413c | 1136 | #endif |
28d77376 GH |
1137 | if (rv < 0) |
1138 | SCM_SYSERROR; | |
1139 | } | |
e0c08f17 KN |
1140 | return SCM_LIST3 (retrieve_select_type (&read_set, read_ports_ready, reads), |
1141 | retrieve_select_type (&write_set, write_ports_ready, writes), | |
1142 | retrieve_select_type (&except_set, SCM_EOL, excepts)); | |
0f2d19dd | 1143 | } |
1bbd0b84 | 1144 | #undef FUNC_NAME |
f25f761d | 1145 | #endif /* HAVE_SELECT */ |
0f2d19dd JB |
1146 | |
1147 | \f | |
4c1feaa5 | 1148 | |
af45e3b0 | 1149 | SCM_DEFINE (scm_fcntl, "fcntl", 2, 1, 0, |
1bbd0b84 | 1150 | (SCM object, SCM cmd, SCM value), |
d3818c29 MD |
1151 | "Apply @var{command} to the specified file descriptor or the underlying\n" |
1152 | "file descriptor of the specified port. @var{value} is an optional\n" | |
1153 | "integer argument.\n\n" | |
1154 | "Values for @var{command} are:\n\n" | |
1155 | "@table @code\n" | |
1156 | "@item F_DUPFD\n" | |
1157 | "Duplicate a file descriptor\n" | |
1158 | "@item F_GETFD\n" | |
1159 | "Get flags associated with the file descriptor.\n" | |
1160 | "@item F_SETFD\n" | |
1161 | "Set flags associated with the file descriptor to @var{value}.\n" | |
1162 | "@item F_GETFL\n" | |
1163 | "Get flags associated with the open file.\n" | |
1164 | "@item F_SETFL\n" | |
1165 | "Set flags associated with the open file to @var{value}\n" | |
1166 | "@item F_GETOWN\n" | |
1167 | "Get the process ID of a socket's owner, for @code{SIGIO} signals.\n" | |
1168 | "@item F_SETOWN\n" | |
1169 | "Set the process that owns a socket to @var{value}, for @code{SIGIO} signals.\n" | |
1170 | "@item FD_CLOEXEC\n" | |
55892d87 NJ |
1171 | "The value used to indicate the \"close on exec\" flag with @code{F_GETFL} or\n" |
1172 | "@code{F_SETFL}.\n" | |
a3c8b9fc | 1173 | "@end table") |
1bbd0b84 | 1174 | #define FUNC_NAME s_scm_fcntl |
4c1feaa5 JB |
1175 | { |
1176 | int rv; | |
6afcd3b2 GH |
1177 | int fdes; |
1178 | int ivalue; | |
4c1feaa5 | 1179 | |
78446828 MV |
1180 | object = SCM_COERCE_OUTPORT (object); |
1181 | ||
3b3b36dd | 1182 | SCM_VALIDATE_INUM (2,cmd); |
0c95b57d | 1183 | if (SCM_OPFPORTP (object)) |
77a76b64 | 1184 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
1185 | else |
1186 | { | |
3b3b36dd | 1187 | SCM_VALIDATE_INUM (1,object); |
6afcd3b2 GH |
1188 | fdes = SCM_INUM (object); |
1189 | } | |
af45e3b0 DH |
1190 | |
1191 | if (SCM_UNBNDP (value)) { | |
6afcd3b2 | 1192 | ivalue = 0; |
af45e3b0 DH |
1193 | } else { |
1194 | SCM_VALIDATE_INUM_COPY (SCM_ARG3, value, ivalue); | |
1195 | } | |
1196 | ||
77a76b64 JB |
1197 | SCM_SYSCALL (rv = fcntl (fdes, SCM_INUM (cmd), ivalue)); |
1198 | if (rv == -1) | |
1bbd0b84 | 1199 | SCM_SYSERROR; |
4c1feaa5 JB |
1200 | return SCM_MAKINUM (rv); |
1201 | } | |
1bbd0b84 | 1202 | #undef FUNC_NAME |
6afcd3b2 | 1203 | |
a1ec6916 | 1204 | SCM_DEFINE (scm_fsync, "fsync", 1, 0, 0, |
1bbd0b84 | 1205 | (SCM object), |
d3818c29 MD |
1206 | "Copies any unwritten data for the specified output file descriptor to disk.\n" |
1207 | "If @var{port/fd} is a port, its buffer is flushed before the underlying\n" | |
1208 | "file descriptor is fsync'd.\n" | |
1209 | "The return value is unspecified.") | |
1bbd0b84 | 1210 | #define FUNC_NAME s_scm_fsync |
6afcd3b2 GH |
1211 | { |
1212 | int fdes; | |
1213 | ||
78446828 MV |
1214 | object = SCM_COERCE_OUTPORT (object); |
1215 | ||
0c95b57d | 1216 | if (SCM_OPFPORTP (object)) |
6afcd3b2 | 1217 | { |
affc96b5 | 1218 | scm_flush (object); |
77a76b64 | 1219 | fdes = SCM_FPORT_FDES (object); |
6afcd3b2 GH |
1220 | } |
1221 | else | |
1222 | { | |
3b3b36dd | 1223 | SCM_VALIDATE_INUM (1,object); |
6afcd3b2 GH |
1224 | fdes = SCM_INUM (object); |
1225 | } | |
1226 | if (fsync (fdes) == -1) | |
1bbd0b84 | 1227 | SCM_SYSERROR; |
6afcd3b2 GH |
1228 | return SCM_UNSPECIFIED; |
1229 | } | |
1bbd0b84 | 1230 | #undef FUNC_NAME |
0f2d19dd | 1231 | |
f25f761d | 1232 | #ifdef HAVE_SYMLINK |
a1ec6916 | 1233 | SCM_DEFINE (scm_symlink, "symlink", 2, 0, 0, |
1bbd0b84 | 1234 | (SCM oldpath, SCM newpath), |
d3818c29 MD |
1235 | "Create a symbolic link named @var{path-to} with the value (i.e., pointing to)\n" |
1236 | "@var{path-from}. The return value is unspecified.") | |
1bbd0b84 | 1237 | #define FUNC_NAME s_scm_symlink |
0f2d19dd | 1238 | { |
0f2d19dd | 1239 | int val; |
02b754d3 | 1240 | |
a6d9e5ab DH |
1241 | SCM_VALIDATE_STRING (1, oldpath); |
1242 | SCM_VALIDATE_STRING (2, newpath); | |
1243 | SCM_STRING_COERCE_0TERMINATION_X (oldpath); | |
1244 | SCM_STRING_COERCE_0TERMINATION_X (newpath); | |
1245 | SCM_SYSCALL (val = symlink (SCM_STRING_CHARS (oldpath), SCM_STRING_CHARS (newpath))); | |
02b754d3 | 1246 | if (val != 0) |
1bbd0b84 | 1247 | SCM_SYSERROR; |
02b754d3 | 1248 | return SCM_UNSPECIFIED; |
0f2d19dd | 1249 | } |
1bbd0b84 | 1250 | #undef FUNC_NAME |
f25f761d | 1251 | #endif /* HAVE_SYMLINK */ |
0f2d19dd | 1252 | |
f25f761d | 1253 | #ifdef HAVE_READLINK |
a1ec6916 | 1254 | SCM_DEFINE (scm_readlink, "readlink", 1, 0, 0, |
1bbd0b84 | 1255 | (SCM path), |
1e6808ea MG |
1256 | "Return the value of the symbolic link named by @var{path} (a\n" |
1257 | "string), i.e., the file that the link points to.") | |
1bbd0b84 | 1258 | #define FUNC_NAME s_scm_readlink |
0f2d19dd | 1259 | { |
6a738a25 JB |
1260 | int rv; |
1261 | int size = 100; | |
0f2d19dd JB |
1262 | char *buf; |
1263 | SCM result; | |
a6d9e5ab DH |
1264 | SCM_VALIDATE_STRING (1, path); |
1265 | SCM_STRING_COERCE_0TERMINATION_X (path); | |
1bbd0b84 | 1266 | buf = scm_must_malloc (size, FUNC_NAME); |
a6d9e5ab | 1267 | while ((rv = readlink (SCM_STRING_CHARS (path), buf, size)) == size) |
0f2d19dd JB |
1268 | { |
1269 | scm_must_free (buf); | |
1270 | size *= 2; | |
1bbd0b84 | 1271 | buf = scm_must_malloc (size, FUNC_NAME); |
0f2d19dd | 1272 | } |
02b754d3 | 1273 | if (rv == -1) |
1bbd0b84 | 1274 | SCM_SYSERROR; |
02b754d3 | 1275 | result = scm_makfromstr (buf, rv, 0); |
0f2d19dd | 1276 | scm_must_free (buf); |
0f2d19dd | 1277 | return result; |
0f2d19dd | 1278 | } |
1bbd0b84 | 1279 | #undef FUNC_NAME |
f25f761d | 1280 | #endif /* HAVE_READLINK */ |
0f2d19dd | 1281 | |
f25f761d | 1282 | #ifdef HAVE_LSTAT |
a1ec6916 | 1283 | SCM_DEFINE (scm_lstat, "lstat", 1, 0, 0, |
1bbd0b84 | 1284 | (SCM str), |
d3818c29 MD |
1285 | "Similar to @code{stat}, but does not follow symbolic links, i.e.,\n" |
1286 | "it will return information about a symbolic link itself, not the \n" | |
1287 | "file it points to. @var{path} must be a string.") | |
1bbd0b84 | 1288 | #define FUNC_NAME s_scm_lstat |
0f2d19dd | 1289 | { |
02b754d3 | 1290 | int rv; |
0f2d19dd | 1291 | struct stat stat_temp; |
02b754d3 | 1292 | |
a6d9e5ab DH |
1293 | SCM_VALIDATE_STRING (1, str); |
1294 | SCM_STRING_COERCE_0TERMINATION_X (str); | |
1295 | SCM_SYSCALL (rv = lstat (SCM_STRING_CHARS (str), &stat_temp)); | |
02b754d3 | 1296 | if (rv != 0) |
3d8d56df GH |
1297 | { |
1298 | int en = errno; | |
1299 | ||
5d2d2ffc | 1300 | SCM_SYSERROR_MSG ("~A: ~S", |
e0c08f17 KN |
1301 | SCM_LIST2 (scm_makfrom0str (strerror (errno)), str), |
1302 | en); | |
3d8d56df | 1303 | } |
02b754d3 | 1304 | return scm_stat2scm(&stat_temp); |
0f2d19dd | 1305 | } |
1bbd0b84 | 1306 | #undef FUNC_NAME |
f25f761d | 1307 | #endif /* HAVE_LSTAT */ |
0f2d19dd | 1308 | |
a1ec6916 | 1309 | SCM_DEFINE (scm_copy_file, "copy-file", 2, 0, 0, |
1bbd0b84 | 1310 | (SCM oldfile, SCM newfile), |
d3818c29 MD |
1311 | "Copy the file specified by @var{path-from} to @var{path-to}.\n" |
1312 | "The return value is unspecified.") | |
1bbd0b84 | 1313 | #define FUNC_NAME s_scm_copy_file |
0f2d19dd JB |
1314 | { |
1315 | int oldfd, newfd; | |
1316 | int n; | |
77a76b64 | 1317 | char buf[BUFSIZ]; |
0f2d19dd JB |
1318 | struct stat oldstat; |
1319 | ||
a6d9e5ab DH |
1320 | SCM_VALIDATE_STRING (1, oldfile); |
1321 | SCM_STRING_COERCE_0TERMINATION_X (oldfile); | |
1322 | SCM_VALIDATE_STRING (2, newfile); | |
1323 | SCM_STRING_COERCE_0TERMINATION_X (newfile); | |
1324 | if (stat (SCM_STRING_CHARS (oldfile), &oldstat) == -1) | |
1bbd0b84 | 1325 | SCM_SYSERROR; |
a6d9e5ab | 1326 | oldfd = open (SCM_STRING_CHARS (oldfile), O_RDONLY); |
0f2d19dd | 1327 | if (oldfd == -1) |
1bbd0b84 | 1328 | SCM_SYSERROR; |
02b754d3 GH |
1329 | |
1330 | /* use POSIX flags instead of 07777?. */ | |
a6d9e5ab | 1331 | newfd = open (SCM_STRING_CHARS (newfile), O_WRONLY | O_CREAT | O_TRUNC, |
0f2d19dd JB |
1332 | oldstat.st_mode & 07777); |
1333 | if (newfd == -1) | |
1bbd0b84 | 1334 | SCM_SYSERROR; |
02b754d3 | 1335 | |
0f2d19dd JB |
1336 | while ((n = read (oldfd, buf, sizeof buf)) > 0) |
1337 | if (write (newfd, buf, n) != n) | |
1338 | { | |
1339 | close (oldfd); | |
1340 | close (newfd); | |
1bbd0b84 | 1341 | SCM_SYSERROR; |
0f2d19dd JB |
1342 | } |
1343 | close (oldfd); | |
1344 | if (close (newfd) == -1) | |
1bbd0b84 | 1345 | SCM_SYSERROR; |
02b754d3 | 1346 | return SCM_UNSPECIFIED; |
0f2d19dd | 1347 | } |
1bbd0b84 | 1348 | #undef FUNC_NAME |
0f2d19dd JB |
1349 | |
1350 | \f | |
6a738a25 JB |
1351 | /* Filename manipulation */ |
1352 | ||
1353 | SCM scm_dot_string; | |
1354 | ||
a1ec6916 | 1355 | SCM_DEFINE (scm_dirname, "dirname", 1, 0, 0, |
1bbd0b84 | 1356 | (SCM filename), |
fa6a543f MG |
1357 | "Return the directory name component of the file name\n" |
1358 | "@var{filename}. If @var{filename} does not contain a directory\n" | |
1359 | "component, @code{.} is returned.") | |
1bbd0b84 | 1360 | #define FUNC_NAME s_scm_dirname |
6a738a25 JB |
1361 | { |
1362 | char *s; | |
9fd38a3d DH |
1363 | long int i; |
1364 | unsigned long int len; | |
1365 | ||
1366 | SCM_VALIDATE_STRING (1,filename); | |
1367 | ||
34f0f2b8 | 1368 | s = SCM_STRING_CHARS (filename); |
9fd38a3d DH |
1369 | len = SCM_STRING_LENGTH (filename); |
1370 | ||
6a738a25 JB |
1371 | i = len - 1; |
1372 | while (i >= 0 && s[i] == '/') --i; | |
1373 | while (i >= 0 && s[i] != '/') --i; | |
1374 | while (i >= 0 && s[i] == '/') --i; | |
1375 | if (i < 0) | |
1376 | { | |
1377 | if (len > 0 && s[0] == '/') | |
d1ca2c64 | 1378 | return scm_substring (filename, SCM_INUM0, SCM_MAKINUM (1)); |
6a738a25 JB |
1379 | else |
1380 | return scm_dot_string; | |
1381 | } | |
1382 | else | |
d1ca2c64 | 1383 | return scm_substring (filename, SCM_INUM0, SCM_MAKINUM (i + 1)); |
6a738a25 | 1384 | } |
1bbd0b84 | 1385 | #undef FUNC_NAME |
6a738a25 | 1386 | |
a1ec6916 | 1387 | SCM_DEFINE (scm_basename, "basename", 1, 1, 0, |
1bbd0b84 | 1388 | (SCM filename, SCM suffix), |
fa6a543f MG |
1389 | "Return the base name of the file name @var{filename}. The\n" |
1390 | "base name is the file name without any directory components.\n" | |
1391 | "If @var{suffix} is privided, and is equal to the end of\n" | |
1392 | "@var{basename}, it is removed also.") | |
1bbd0b84 | 1393 | #define FUNC_NAME s_scm_basename |
6a738a25 JB |
1394 | { |
1395 | char *f, *s = 0; | |
1396 | int i, j, len, end; | |
9fd38a3d DH |
1397 | |
1398 | SCM_VALIDATE_STRING (1,filename); | |
34f0f2b8 | 1399 | f = SCM_STRING_CHARS (filename); |
9fd38a3d DH |
1400 | len = SCM_STRING_LENGTH (filename); |
1401 | ||
6a738a25 JB |
1402 | if (SCM_UNBNDP (suffix)) |
1403 | j = -1; | |
1404 | else | |
1405 | { | |
9fd38a3d | 1406 | SCM_VALIDATE_STRING (2, suffix); |
34f0f2b8 | 1407 | s = SCM_STRING_CHARS (suffix); |
9fd38a3d | 1408 | j = SCM_STRING_LENGTH (suffix) - 1; |
6a738a25 | 1409 | } |
6a738a25 JB |
1410 | i = len - 1; |
1411 | while (i >= 0 && f[i] == '/') --i; | |
1412 | end = i; | |
1413 | while (i >= 0 && j >= 0 && f[i] == s[j]) --i, --j; | |
1414 | if (j == -1) | |
1415 | end = i; | |
1416 | while (i >= 0 && f[i] != '/') --i; | |
1417 | if (i == end) | |
1418 | { | |
1419 | if (len > 0 && f[0] == '/') | |
d1ca2c64 | 1420 | return scm_substring (filename, SCM_INUM0, SCM_MAKINUM (1)); |
6a738a25 JB |
1421 | else |
1422 | return scm_dot_string; | |
1423 | } | |
1424 | else | |
d1ca2c64 | 1425 | return scm_substring (filename, SCM_MAKINUM (i + 1), SCM_MAKINUM (end + 1)); |
6a738a25 | 1426 | } |
1bbd0b84 | 1427 | #undef FUNC_NAME |
6a738a25 JB |
1428 | |
1429 | ||
1430 | ||
1431 | \f | |
1cc91f1b | 1432 | |
0f2d19dd JB |
1433 | void |
1434 | scm_init_filesys () | |
0f2d19dd | 1435 | { |
e841c3e0 KN |
1436 | scm_tc16_dir = scm_make_smob_type ("directory", 0); |
1437 | scm_set_smob_free (scm_tc16_dir, scm_dir_free); | |
1438 | scm_set_smob_print (scm_tc16_dir, scm_dir_print); | |
0f2d19dd | 1439 | |
a163dda9 MD |
1440 | scm_dot_string = scm_permanent_object (scm_makfrom0str (".")); |
1441 | ||
3d8d56df | 1442 | #ifdef O_RDONLY |
86d31dfe | 1443 | scm_c_define ("O_RDONLY", scm_long2num (O_RDONLY)); |
3d8d56df GH |
1444 | #endif |
1445 | #ifdef O_WRONLY | |
86d31dfe | 1446 | scm_c_define ("O_WRONLY", scm_long2num (O_WRONLY)); |
3d8d56df GH |
1447 | #endif |
1448 | #ifdef O_RDWR | |
86d31dfe | 1449 | scm_c_define ("O_RDWR", scm_long2num (O_RDWR)); |
3d8d56df GH |
1450 | #endif |
1451 | #ifdef O_CREAT | |
86d31dfe | 1452 | scm_c_define ("O_CREAT", scm_long2num (O_CREAT)); |
3d8d56df GH |
1453 | #endif |
1454 | #ifdef O_EXCL | |
86d31dfe | 1455 | scm_c_define ("O_EXCL", scm_long2num (O_EXCL)); |
3d8d56df GH |
1456 | #endif |
1457 | #ifdef O_NOCTTY | |
86d31dfe | 1458 | scm_c_define ("O_NOCTTY", scm_long2num (O_NOCTTY)); |
3d8d56df GH |
1459 | #endif |
1460 | #ifdef O_TRUNC | |
86d31dfe | 1461 | scm_c_define ("O_TRUNC", scm_long2num (O_TRUNC)); |
3d8d56df GH |
1462 | #endif |
1463 | #ifdef O_APPEND | |
86d31dfe | 1464 | scm_c_define ("O_APPEND", scm_long2num (O_APPEND)); |
3d8d56df | 1465 | #endif |
6afcd3b2 | 1466 | #ifdef O_NONBLOCK |
86d31dfe | 1467 | scm_c_define ("O_NONBLOCK", scm_long2num (O_NONBLOCK)); |
3d8d56df GH |
1468 | #endif |
1469 | #ifdef O_NDELAY | |
86d31dfe | 1470 | scm_c_define ("O_NDELAY", scm_long2num (O_NDELAY)); |
3d8d56df GH |
1471 | #endif |
1472 | #ifdef O_SYNC | |
86d31dfe | 1473 | scm_c_define ("O_SYNC", scm_long2num (O_SYNC)); |
3d8d56df GH |
1474 | #endif |
1475 | ||
4c1feaa5 | 1476 | #ifdef F_DUPFD |
86d31dfe | 1477 | scm_c_define ("F_DUPFD", scm_long2num (F_DUPFD)); |
4c1feaa5 JB |
1478 | #endif |
1479 | #ifdef F_GETFD | |
86d31dfe | 1480 | scm_c_define ("F_GETFD", scm_long2num (F_GETFD)); |
4c1feaa5 JB |
1481 | #endif |
1482 | #ifdef F_SETFD | |
86d31dfe | 1483 | scm_c_define ("F_SETFD", scm_long2num (F_SETFD)); |
4c1feaa5 JB |
1484 | #endif |
1485 | #ifdef F_GETFL | |
86d31dfe | 1486 | scm_c_define ("F_GETFL", scm_long2num (F_GETFL)); |
4c1feaa5 JB |
1487 | #endif |
1488 | #ifdef F_SETFL | |
86d31dfe | 1489 | scm_c_define ("F_SETFL", scm_long2num (F_SETFL)); |
4c1feaa5 JB |
1490 | #endif |
1491 | #ifdef F_GETOWN | |
86d31dfe | 1492 | scm_c_define ("F_GETOWN", scm_long2num (F_GETOWN)); |
4c1feaa5 JB |
1493 | #endif |
1494 | #ifdef F_SETOWN | |
86d31dfe | 1495 | scm_c_define ("F_SETOWN", scm_long2num (F_SETOWN)); |
4c1feaa5 JB |
1496 | #endif |
1497 | #ifdef FD_CLOEXEC | |
86d31dfe | 1498 | scm_c_define ("FD_CLOEXEC", scm_long2num (FD_CLOEXEC)); |
bd9e24b3 | 1499 | #endif |
3d8d56df | 1500 | |
8dc9439f | 1501 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 1502 | #include "libguile/filesys.x" |
8dc9439f | 1503 | #endif |
0f2d19dd | 1504 | } |
89e00824 ML |
1505 | |
1506 | /* | |
1507 | Local Variables: | |
1508 | c-file-style: "gnu" | |
1509 | End: | |
1510 | */ |