1 /* Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
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)
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.
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
15 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
16 * Boston, MA 02111-1307 USA
18 * As a special exception, the Free Software Foundation gives permission
19 * for additional uses of the text contained in its release of GUILE.
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.
27 * This exception does not however invalidate any other reasons why
28 * the executable file might be covered by the GNU General Public License.
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.
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.
40 * If you do not wish that, delete this exception notice. */
47 #include "libguile/_scm.h"
48 #include "libguile/smob.h"
49 #include "libguile/feature.h"
50 #include "libguile/fports.h"
51 #include "libguile/iselect.h"
52 #include "libguile/strings.h"
53 #include "libguile/vectors.h"
54 #include "libguile/lang.h"
56 #include "libguile/validate.h"
57 #include "libguile/filesys.h"
68 #ifdef TIME_WITH_SYS_TIME
69 # include <sys/time.h>
73 # include <sys/time.h>
83 #ifdef LIBC_H_WITH_UNISTD_H
87 #ifdef HAVE_SYS_SELECT_H
88 #include <sys/select.h>
95 #include <sys/types.h>
104 #if defined (__MINGW32__) || defined (_MSC_VER) || defined (__BORLANDC__)
105 # include "win32-dirent.h"
106 # define NAMLEN(dirent) strlen((dirent)->d_name)
109 # define NAMLEN(dirent) strlen((dirent)->d_name)
111 # define dirent direct
112 # define NAMLEN(dirent) (dirent)->d_namlen
114 # include <sys/ndir.h>
117 # include <sys/dir.h>
124 /* Ultrix has S_IFSOCK, but no S_ISSOCK. Ipe! */
125 #if defined (S_IFSOCK) && ! defined (S_ISSOCK)
126 #define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
129 /* The MinGW gcc does not define the S_ISSOCK macro. Any other native Windows
130 compiler like BorlandC or MSVC has none of these macros defined. */
152 # define _S_IFIFO 0x1000 /* FIFO */
153 # define _S_IFCHR 0x2000 /* Character */
154 # define _S_IFBLK 0x3000 /* Block */
155 # define _S_IFDIR 0x4000 /* Directory */
156 # define _S_IFREG 0x8000 /* Regular */
157 # define _S_IFSOCK 0xC000 /* Socket */
178 # define S_ISBLK(mode) (((mode) & _S_IFMT) == _S_IFBLK)
179 # define S_ISFIFO(mode) (((mode) & _S_IFMT) == _S_IFIFO)
180 # define S_ISCHR(mode) (((mode) & _S_IFMT) == _S_IFCHR)
181 # define S_ISDIR(mode) (((mode) & _S_IFMT) == _S_IFDIR)
182 # define S_ISREG(mode) (((mode) & _S_IFMT) == _S_IFREG)
183 # define S_ISSOCK(mode) (((mode) & _S_IFMT) == _S_IFSOCK)
185 #endif /* __MINGW32__ */
187 /* Some more definitions for the native Windows port. */
189 # define mkdir(path, mode) mkdir (path)
190 # define fsync(fd) _commit (fd)
191 # define fchmod(fd, mode) (-1)
192 #endif /* __MINGW32__ */
202 SCM_DEFINE (scm_chown
, "chown", 3, 0, 0,
203 (SCM object
, SCM owner
, SCM group
),
204 "Change the ownership and group of the file referred to by @var{object} to\n"
205 "the integer values @var{owner} and @var{group}. @var{object} can be\n"
206 "a string containing a file name or, if the platform\n"
207 "supports fchown, a port or integer file descriptor\n"
208 "which is open on the file. The return value\n"
209 "is unspecified.\n\n"
210 "If @var{object} is a symbolic link, either the\n"
211 "ownership of the link or the ownership of the referenced file will be\n"
212 "changed depending on the operating system (lchown is\n"
213 "unsupported at present). If @var{owner} or @var{group} is specified\n"
214 "as @code{-1}, then that ID is not changed.")
215 #define FUNC_NAME s_scm_chown
219 object
= SCM_COERCE_OUTPORT (object
);
221 SCM_VALIDATE_INUM (2,owner
);
222 SCM_VALIDATE_INUM (3,group
);
224 if (SCM_INUMP (object
) || (SCM_OPFPORTP (object
)))
226 int fdes
= SCM_INUMP (object
) ? SCM_INUM (object
)
227 : SCM_FPORT_FDES (object
);
229 SCM_SYSCALL (rv
= fchown (fdes
, SCM_INUM (owner
), SCM_INUM (group
)));
234 SCM_VALIDATE_STRING (1, object
);
235 SCM_SYSCALL (rv
= chown (SCM_STRING_CHARS (object
),
236 SCM_INUM (owner
), SCM_INUM (group
)));
240 return SCM_UNSPECIFIED
;
243 #endif /* HAVE_CHOWN */
246 SCM_DEFINE (scm_chmod
, "chmod", 2, 0, 0,
247 (SCM object
, SCM mode
),
248 "Changes the permissions of the file referred to by @var{obj}.\n"
249 "@var{obj} can be a string containing a file name or a port or integer file\n"
250 "descriptor which is open on a file (in which case @code{fchmod} is used\n"
251 "as the underlying system call).\n"
252 "@var{mode} specifies\n"
253 "the new permissions as a decimal number, e.g., @code{(chmod \"foo\" #o755)}.\n"
254 "The return value is unspecified.")
255 #define FUNC_NAME s_scm_chmod
260 object
= SCM_COERCE_OUTPORT (object
);
262 SCM_VALIDATE_INUM (2,mode
);
263 if (SCM_INUMP (object
) || SCM_OPFPORTP (object
))
265 if (SCM_INUMP (object
))
266 fdes
= SCM_INUM (object
);
268 fdes
= SCM_FPORT_FDES (object
);
269 SCM_SYSCALL (rv
= fchmod (fdes
, SCM_INUM (mode
)));
273 SCM_VALIDATE_STRING (1, object
);
274 SCM_SYSCALL (rv
= chmod (SCM_STRING_CHARS (object
), SCM_INUM (mode
)));
278 return SCM_UNSPECIFIED
;
282 SCM_DEFINE (scm_umask
, "umask", 0, 1, 0,
284 "If @var{mode} is omitted, retuns a decimal number representing the current\n"
285 "file creation mask. Otherwise the file creation mask is set to\n"
286 "@var{mode} and the previous value is returned.\n\n"
287 "E.g., @code{(umask #o022)} sets the mask to octal 22, decimal 18.")
288 #define FUNC_NAME s_scm_umask
291 if (SCM_UNBNDP (mode
))
298 SCM_VALIDATE_INUM (1,mode
);
299 mask
= umask (SCM_INUM (mode
));
301 return SCM_MAKINUM (mask
);
307 SCM_DEFINE (scm_open_fdes
, "open-fdes", 2, 1, 0,
308 (SCM path
, SCM flags
, SCM mode
),
309 "Similar to @code{open} but return a file descriptor instead of\n"
311 #define FUNC_NAME s_scm_open_fdes
317 SCM_VALIDATE_STRING (1, path
);
318 iflags
= SCM_NUM2INT (2, flags
);
319 imode
= SCM_NUM2INT_DEF (3, mode
, 0666);
320 SCM_SYSCALL (fd
= open (SCM_STRING_CHARS (path
), iflags
, imode
));
323 return SCM_MAKINUM (fd
);
327 SCM_DEFINE (scm_open
, "open", 2, 1, 0,
328 (SCM path
, SCM flags
, SCM mode
),
329 "Open the file named by @var{path} for reading and/or writing.\n"
330 "@var{flags} is an integer specifying how the file should be opened.\n"
331 "@var{mode} is an integer specifying the permission bits of the file, if\n"
332 "it needs to be created, before the umask is applied. The default is 666\n"
333 "(Unix itself has no default).\n\n"
334 "@var{flags} can be constructed by combining variables using @code{logior}.\n"
335 "Basic flags are:\n\n"
337 "Open the file read-only.\n"
340 "Open the file write-only.\n"
343 "Open the file read/write.\n"
346 "Append to the file instead of truncating.\n"
349 "Create the file if it does not already exist.\n"
351 "See the Unix documentation of the @code{open} system call\n"
352 "for additional flags.")
353 #define FUNC_NAME s_scm_open
360 fd
= SCM_INUM (scm_open_fdes (path
, flags
, mode
));
361 iflags
= SCM_NUM2INT (2, flags
);
364 if (iflags
& O_APPEND
)
366 else if (iflags
& O_CREAT
)
372 if (iflags
& O_APPEND
)
374 else if (iflags
& O_WRONLY
)
379 newpt
= scm_fdes_to_port (fd
, port_mode
, path
);
384 SCM_DEFINE (scm_close
, "close", 1, 0, 0,
386 "Similar to close-port (@pxref{Closing, close-port}),\n"
387 "but also works on file descriptors. A side\n"
388 "effect of closing a file descriptor is that any ports using that file\n"
389 "descriptor are moved to a different file descriptor and have\n"
390 "their revealed counts set to zero.")
391 #define FUNC_NAME s_scm_close
396 fd_or_port
= SCM_COERCE_OUTPORT (fd_or_port
);
398 if (SCM_PORTP (fd_or_port
))
399 return scm_close_port (fd_or_port
);
400 SCM_VALIDATE_INUM (1,fd_or_port
);
401 fd
= SCM_INUM (fd_or_port
);
402 scm_evict_ports (fd
); /* see scsh manual. */
403 SCM_SYSCALL (rv
= close (fd
));
404 /* following scsh, closing an already closed file descriptor is
406 if (rv
< 0 && errno
!= EBADF
)
408 return SCM_BOOL (rv
>= 0);
412 SCM_DEFINE (scm_close_fdes
, "close-fdes", 1, 0, 0,
414 "A simple wrapper for the @code{close} system call.\n"
415 "Close file descriptor @var{fd}, which must be an integer.\n"
416 "Unlike close (@pxref{Ports and File Descriptors, close}),\n"
417 "the file descriptor will be closed even if a port is using it.\n"
418 "The return value is unspecified.")
419 #define FUNC_NAME s_scm_close_fdes
424 SCM_VALIDATE_INUM_COPY (1, fd
, c_fd
);
425 SCM_SYSCALL (rv
= close (c_fd
));
428 return SCM_UNSPECIFIED
;
436 SCM_SYMBOL (scm_sym_regular
, "regular");
437 SCM_SYMBOL (scm_sym_directory
, "directory");
439 SCM_SYMBOL (scm_sym_symlink
, "symlink");
441 SCM_SYMBOL (scm_sym_block_special
, "block-special");
442 SCM_SYMBOL (scm_sym_char_special
, "char-special");
443 SCM_SYMBOL (scm_sym_fifo
, "fifo");
444 SCM_SYMBOL (scm_sym_sock
, "socket");
445 SCM_SYMBOL (scm_sym_unknown
, "unknown");
448 scm_stat2scm (struct stat
*stat_temp
)
450 SCM ans
= scm_c_make_vector (15, SCM_UNSPECIFIED
);
451 SCM
*ve
= SCM_VELTS (ans
);
453 ve
[0] = scm_ulong2num ((unsigned long) stat_temp
->st_dev
);
454 ve
[1] = scm_ulong2num ((unsigned long) stat_temp
->st_ino
);
455 ve
[2] = scm_ulong2num ((unsigned long) stat_temp
->st_mode
);
456 ve
[3] = scm_ulong2num ((unsigned long) stat_temp
->st_nlink
);
457 ve
[4] = scm_ulong2num ((unsigned long) stat_temp
->st_uid
);
458 ve
[5] = scm_ulong2num ((unsigned long) stat_temp
->st_gid
);
459 #ifdef HAVE_STRUCT_STAT_ST_RDEV
460 ve
[6] = scm_ulong2num ((unsigned long) stat_temp
->st_rdev
);
464 ve
[7] = scm_ulong2num ((unsigned long) stat_temp
->st_size
);
465 ve
[8] = scm_ulong2num ((unsigned long) stat_temp
->st_atime
);
466 ve
[9] = scm_ulong2num ((unsigned long) stat_temp
->st_mtime
);
467 ve
[10] = scm_ulong2num ((unsigned long) stat_temp
->st_ctime
);
468 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
469 ve
[11] = scm_ulong2num ((unsigned long) stat_temp
->st_blksize
);
471 ve
[11] = scm_ulong2num (4096L);
473 #ifdef HAVE_STRUCT_STAT_ST_BLOCKS
474 ve
[12] = scm_ulong2num ((unsigned long) stat_temp
->st_blocks
);
479 int mode
= stat_temp
->st_mode
;
482 ve
[13] = scm_sym_regular
;
483 else if (S_ISDIR (mode
))
484 ve
[13] = scm_sym_directory
;
486 else if (S_ISLNK (mode
))
487 ve
[13] = scm_sym_symlink
;
489 else if (S_ISBLK (mode
))
490 ve
[13] = scm_sym_block_special
;
491 else if (S_ISCHR (mode
))
492 ve
[13] = scm_sym_char_special
;
493 else if (S_ISFIFO (mode
))
494 ve
[13] = scm_sym_fifo
;
496 else if (S_ISSOCK (mode
))
497 ve
[13] = scm_sym_sock
;
500 ve
[13] = scm_sym_unknown
;
502 ve
[14] = SCM_MAKINUM ((~S_IFMT
) & mode
);
504 /* the layout of the bits in ve[14] is intended to be portable.
505 If there are systems that don't follow the usual convention,
506 the following could be used:
509 if (S_ISUID & mode) tmp += 1;
511 if (S_IRGRP & mode) tmp += 1;
513 if (S_ISVTX & mode) tmp += 1;
515 if (S_IRUSR & mode) tmp += 1;
517 if (S_IWUSR & mode) tmp += 1;
519 if (S_IXUSR & mode) tmp += 1;
521 if (S_IWGRP & mode) tmp += 1;
523 if (S_IXGRP & mode) tmp += 1;
525 if (S_IROTH & mode) tmp += 1;
527 if (S_IWOTH & mode) tmp += 1;
529 if (S_IXOTH & mode) tmp += 1;
531 ve[14] = SCM_MAKINUM (tmp);
541 * Try getting the appropiate stat buffer for a given file descriptor
542 * under Windows. It differentiates between file, pipe and socket
545 static int fstat_Win32 (int fdes
, struct stat
*buf
)
547 int error
, optlen
= sizeof (int);
549 memset (buf
, 0, sizeof (struct stat
));
551 /* Is this a socket ? */
552 if (getsockopt (fdes
, SOL_SOCKET
, SO_ERROR
, (void *) &error
, &optlen
) >= 0)
554 buf
->st_mode
= _S_IFSOCK
| _S_IREAD
| _S_IWRITE
| _S_IEXEC
;
556 buf
->st_atime
= buf
->st_ctime
= buf
->st_mtime
= time (NULL
);
559 /* Maybe a regular file or pipe ? */
560 return fstat (fdes
, buf
);
562 #endif /* __MINGW32__ */
564 SCM_DEFINE (scm_stat
, "stat", 1, 0, 0,
566 "Return an object containing various information about the file\n"
567 "determined by @var{obj}. @var{obj} can be a string containing\n"
568 "a file name or a port or integer file descriptor which is open\n"
569 "on a file (in which case @code{fstat} is used as the underlying\n"
572 "The object returned by @code{stat} can be passed as a single\n"
573 "parameter to the following procedures, all of which return\n"
578 "The device containing the file.\n"
580 "The file serial number, which distinguishes this file from all\n"
581 "other files on the same device.\n"
583 "The mode of the file. This includes file type information and\n"
584 "the file permission bits. See @code{stat:type} and\n"
585 "@code{stat:perms} below.\n"
587 "The number of hard links to the file.\n"
589 "The user ID of the file's owner.\n"
591 "The group ID of the file.\n"
593 "Device ID; this entry is defined only for character or block\n"
596 "The size of a regular file in bytes.\n"
598 "The last access time for the file.\n"
600 "The last modification time for the file.\n"
602 "The last modification time for the attributes of the file.\n"
603 "@item stat:blksize\n"
604 "The optimal block size for reading or writing the file, in\n"
606 "@item stat:blocks\n"
607 "The amount of disk space that the file occupies measured in\n"
608 "units of 512 byte blocks.\n"
611 "In addition, the following procedures return the information\n"
612 "from stat:mode in a more convenient form:\n"
616 "A symbol representing the type of file. Possible values are\n"
617 "regular, directory, symlink, block-special, char-special, fifo,\n"
618 "socket and unknown\n"
620 "An integer representing the access permission bits.\n"
622 #define FUNC_NAME s_scm_stat
626 struct stat stat_temp
;
628 if (SCM_INUMP (object
))
631 SCM_SYSCALL (rv
= fstat_Win32 (SCM_INUM (object
), &stat_temp
));
633 SCM_SYSCALL (rv
= fstat (SCM_INUM (object
), &stat_temp
));
636 else if (SCM_STRINGP (object
))
639 char *p
, *file
= strdup (SCM_STRING_CHARS (object
));
640 p
= file
+ strlen (file
) - 1;
641 while (p
> file
&& (*p
== '/' || *p
== '\\'))
643 SCM_SYSCALL (rv
= stat (file
, &stat_temp
));
646 SCM_SYSCALL (rv
= stat (SCM_STRING_CHARS (object
), &stat_temp
));
651 object
= SCM_COERCE_OUTPORT (object
);
652 SCM_VALIDATE_OPFPORT (1, object
);
653 fdes
= SCM_FPORT_FDES (object
);
655 SCM_SYSCALL (rv
= fstat_Win32 (fdes
, &stat_temp
));
657 SCM_SYSCALL (rv
= fstat (fdes
, &stat_temp
));
665 SCM_SYSERROR_MSG ("~A: ~S",
666 scm_list_2 (scm_makfrom0str (strerror (errno
)),
670 return scm_stat2scm (&stat_temp
);
675 /* {Modifying Directories}
679 SCM_DEFINE (scm_link
, "link", 2, 0, 0,
680 (SCM oldpath
, SCM newpath
),
681 "Creates a new name @var{newpath} in the file system for the\n"
682 "file named by @var{oldpath}. If @var{oldpath} is a symbolic\n"
683 "link, the link may or may not be followed depending on the\n"
685 #define FUNC_NAME s_scm_link
689 SCM_VALIDATE_STRING (1, oldpath
);
690 SCM_VALIDATE_STRING (2, newpath
);
691 SCM_SYSCALL (val
= link (SCM_STRING_CHARS (oldpath
),
692 SCM_STRING_CHARS (newpath
)));
695 return SCM_UNSPECIFIED
;
698 #endif /* HAVE_LINK */
702 SCM_DEFINE (scm_rename
, "rename-file", 2, 0, 0,
703 (SCM oldname
, SCM newname
),
704 "Renames the file specified by @var{oldname} to @var{newname}.\n"
705 "The return value is unspecified.")
706 #define FUNC_NAME s_scm_rename
709 SCM_VALIDATE_STRING (1, oldname
);
710 SCM_VALIDATE_STRING (2, newname
);
712 SCM_SYSCALL (rv
= rename (SCM_STRING_CHARS (oldname
), SCM_STRING_CHARS (newname
)));
714 SCM_SYSCALL (rv
= link (SCM_STRING_CHARS (oldname
), SCM_STRING_CHARS (newname
)));
717 SCM_SYSCALL (rv
= unlink (SCM_STRING_CHARS (oldname
)));;
719 /* unlink failed. remove new name */
720 SCM_SYSCALL (unlink (SCM_STRING_CHARS (newname
)));
725 return SCM_UNSPECIFIED
;
730 SCM_DEFINE (scm_delete_file
, "delete-file", 1, 0, 0,
732 "Deletes (or \"unlinks\") the file specified by @var{path}.")
733 #define FUNC_NAME s_scm_delete_file
736 SCM_VALIDATE_STRING (1, str
);
737 SCM_SYSCALL (ans
= unlink (SCM_STRING_CHARS (str
)));
740 return SCM_UNSPECIFIED
;
745 SCM_DEFINE (scm_mkdir
, "mkdir", 1, 1, 0,
746 (SCM path
, SCM mode
),
747 "Create a new directory named by @var{path}. If @var{mode} is omitted\n"
748 "then the permissions of the directory file are set using the current\n"
749 "umask. Otherwise they are set to the decimal value specified with\n"
750 "@var{mode}. The return value is unspecified.")
751 #define FUNC_NAME s_scm_mkdir
755 SCM_VALIDATE_STRING (1, path
);
756 if (SCM_UNBNDP (mode
))
760 SCM_SYSCALL (rv
= mkdir (SCM_STRING_CHARS (path
), 0777 ^ mask
));
764 SCM_VALIDATE_INUM (2,mode
);
765 SCM_SYSCALL (rv
= mkdir (SCM_STRING_CHARS (path
), SCM_INUM (mode
)));
769 return SCM_UNSPECIFIED
;
772 #endif /* HAVE_MKDIR */
775 SCM_DEFINE (scm_rmdir
, "rmdir", 1, 0, 0,
777 "Remove the existing directory named by @var{path}. The directory must\n"
778 "be empty for this to succeed. The return value is unspecified.")
779 #define FUNC_NAME s_scm_rmdir
783 SCM_VALIDATE_STRING (1, path
);
784 SCM_SYSCALL (val
= rmdir (SCM_STRING_CHARS (path
)));
787 return SCM_UNSPECIFIED
;
794 /* {Examining Directories}
797 scm_t_bits scm_tc16_dir
;
800 SCM_DEFINE (scm_directory_stream_p
, "directory-stream?", 1, 0, 0,
802 "Return a boolean indicating whether @var{object} is a directory\n"
803 "stream as returned by @code{opendir}.")
804 #define FUNC_NAME s_scm_directory_stream_p
806 return SCM_BOOL (SCM_DIRP (obj
));
811 SCM_DEFINE (scm_opendir
, "opendir", 1, 0, 0,
813 "Open the directory specified by @var{path} and return a directory\n"
815 #define FUNC_NAME s_scm_opendir
818 SCM_VALIDATE_STRING (1, dirname
);
819 SCM_SYSCALL (ds
= opendir (SCM_STRING_CHARS (dirname
)));
822 SCM_RETURN_NEWSMOB (scm_tc16_dir
| SCM_DIR_FLAG_OPEN
, ds
);
827 SCM_DEFINE (scm_readdir
, "readdir", 1, 0, 0,
829 "Return (as a string) the next directory entry from the directory stream\n"
830 "@var{stream}. If there is no remaining entry to be read then the\n"
831 "end of file object is returned.")
832 #define FUNC_NAME s_scm_readdir
834 struct dirent
*rdent
;
836 SCM_VALIDATE_DIR (1, port
);
837 if (!SCM_DIR_OPEN_P (port
))
838 SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port
));
841 SCM_SYSCALL (rdent
= readdir ((DIR *) SCM_CELL_WORD_1 (port
)));
845 return (rdent
? scm_mem2string (rdent
->d_name
, NAMLEN (rdent
))
851 SCM_DEFINE (scm_rewinddir
, "rewinddir", 1, 0, 0,
853 "Reset the directory port @var{stream} so that the next call to\n"
854 "@code{readdir} will return the first directory entry.")
855 #define FUNC_NAME s_scm_rewinddir
857 SCM_VALIDATE_DIR (1, port
);
858 if (!SCM_DIR_OPEN_P (port
))
859 SCM_MISC_ERROR ("Directory ~S is not open.", scm_list_1 (port
));
861 rewinddir ((DIR *) SCM_CELL_WORD_1 (port
));
863 return SCM_UNSPECIFIED
;
868 SCM_DEFINE (scm_closedir
, "closedir", 1, 0, 0,
870 "Close the directory stream @var{stream}.\n"
871 "The return value is unspecified.")
872 #define FUNC_NAME s_scm_closedir
874 SCM_VALIDATE_DIR (1, port
);
876 if (SCM_DIR_OPEN_P (port
))
880 SCM_SYSCALL (sts
= closedir ((DIR *) SCM_CELL_WORD_1 (port
)));
884 SCM_SET_CELL_WORD_0 (port
, scm_tc16_dir
);
887 return SCM_UNSPECIFIED
;
893 scm_dir_print (SCM exp
, SCM port
, scm_print_state
*pstate SCM_UNUSED
)
895 scm_puts ("#<", port
);
896 if (!SCM_DIR_OPEN_P (exp
))
897 scm_puts ("closed: ", port
);
898 scm_puts ("directory stream ", port
);
899 scm_intprint (SCM_CELL_WORD_1 (exp
), 16, port
);
900 scm_putc ('>', port
);
908 if (SCM_DIR_OPEN_P (p
))
909 closedir ((DIR *) SCM_CELL_WORD_1 (p
));
914 /* {Navigating Directories}
918 SCM_DEFINE (scm_chdir
, "chdir", 1, 0, 0,
920 "Change the current working directory to @var{path}.\n"
921 "The return value is unspecified.")
922 #define FUNC_NAME s_scm_chdir
926 SCM_VALIDATE_STRING (1, str
);
927 SCM_SYSCALL (ans
= chdir (SCM_STRING_CHARS (str
)));
930 return SCM_UNSPECIFIED
;
935 SCM_DEFINE (scm_getcwd
, "getcwd", 0, 0, 0,
937 "Return the name of the current working directory.")
938 #define FUNC_NAME s_scm_getcwd
945 wd
= scm_malloc (size
);
946 while ((rv
= getcwd (wd
, size
)) == 0 && errno
== ERANGE
)
950 wd
= scm_malloc (size
);
954 result
= scm_mem2string (wd
, strlen (wd
));
959 #endif /* HAVE_GETCWD */
965 /* check that element is a port or file descriptor. if it's a port
966 and its buffer is ready for use, add it to the ports_ready list.
967 otherwise add its file descriptor to *set. the type of list can be
968 determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes,
969 SCM_ARG3 for excepts. */
971 set_element (SELECT_TYPE
*set
, SCM
*ports_ready
, SCM element
, int pos
)
975 if (SCM_INUMP (element
))
977 fd
= SCM_INUM (element
);
983 element
= SCM_COERCE_OUTPORT (element
);
984 SCM_ASSERT (SCM_OPFPORTP (element
), element
, pos
, "select");
987 /* check whether port has buffered input. */
988 scm_t_port
*pt
= SCM_PTAB_ENTRY (element
);
990 if (pt
->read_pos
< pt
->read_end
)
993 else if (pos
== SCM_ARG2
)
995 /* check whether port's output buffer has room. */
996 scm_t_port
*pt
= SCM_PTAB_ENTRY (element
);
998 /* > 1 since writing the last byte in the buffer causes flush. */
999 if (pt
->write_end
- pt
->write_pos
> 1)
1002 fd
= use_buf
? -1 : SCM_FPORT_FDES (element
);
1005 *ports_ready
= scm_cons (element
, *ports_ready
);
1011 /* check list_or_vec, a list or vector of ports or file descriptors,
1012 adding each member to either the ports_ready list (if it's a port
1013 with a usable buffer) or to *set. the kind of list_or_vec can be
1014 determined from pos: SCM_ARG1 for reads, SCM_ARG2 for writes,
1015 SCM_ARG3 for excepts. */
1017 fill_select_type (SELECT_TYPE
*set
, SCM
*ports_ready
, SCM list_or_vec
, int pos
)
1021 if (SCM_VECTORP (list_or_vec
))
1023 int i
= SCM_VECTOR_LENGTH (list_or_vec
);
1024 SCM
*ve
= SCM_VELTS (list_or_vec
);
1028 int fd
= set_element (set
, ports_ready
, ve
[i
], pos
);
1036 while (!SCM_NULL_OR_NIL_P (list_or_vec
))
1038 int fd
= set_element (set
, ports_ready
, SCM_CAR (list_or_vec
), pos
);
1042 list_or_vec
= SCM_CDR (list_or_vec
);
1049 /* if element (a file descriptor or port) appears in *set, cons it to
1050 list. return list. */
1052 get_element (SELECT_TYPE
*set
, SCM element
, SCM list
)
1056 if (SCM_INUMP (element
))
1058 fd
= SCM_INUM (element
);
1062 fd
= SCM_FPORT_FDES (SCM_COERCE_OUTPORT (element
));
1064 if (FD_ISSET (fd
, set
))
1065 list
= scm_cons (element
, list
);
1069 /* construct component of scm_select return value.
1070 set: pointer to set of file descriptors found by select to be ready
1071 ports_ready: ports ready due to buffering
1072 list_or_vec: original list/vector handed to scm_select.
1073 the return value is a list/vector of ready ports/file descriptors.
1074 works by finding the objects in list which correspond to members of
1075 *set and appending them to ports_ready. result is converted to a
1076 vector if list_or_vec is a vector. */
1078 retrieve_select_type (SELECT_TYPE
*set
, SCM ports_ready
, SCM list_or_vec
)
1080 SCM answer_list
= ports_ready
;
1082 if (SCM_VECTORP (list_or_vec
))
1084 int i
= SCM_VECTOR_LENGTH (list_or_vec
);
1085 SCM
*ve
= SCM_VELTS (list_or_vec
);
1089 answer_list
= get_element (set
, ve
[i
], answer_list
);
1091 return scm_vector (answer_list
);
1095 /* list_or_vec must be a list. */
1096 while (!SCM_NULL_OR_NIL_P (list_or_vec
))
1098 answer_list
= get_element (set
, SCM_CAR (list_or_vec
), answer_list
);
1099 list_or_vec
= SCM_CDR (list_or_vec
);
1105 /* Static helper functions above refer to s_scm_select directly as s_select */
1106 SCM_DEFINE (scm_select
, "select", 3, 2, 0,
1107 (SCM reads
, SCM writes
, SCM excepts
, SCM secs
, SCM usecs
),
1108 "This procedure has a variety of uses: waiting for the ability\n"
1109 "to provide input, accept output, or the existance of\n"
1110 "exceptional conditions on a collection of ports or file\n"
1111 "descriptors, or waiting for a timeout to occur.\n"
1112 "It also returns if interrupted by a signal.\n\n"
1113 "@var{reads}, @var{writes} and @var{excepts} can be lists or\n"
1114 "vectors, with each member a port or a file descriptor.\n"
1115 "The value returned is a list of three corresponding\n"
1116 "lists or vectors containing only the members which meet the\n"
1117 "specified requirement. The ability of port buffers to\n"
1118 "provide input or accept output is taken into account.\n"
1119 "Ordering of the input lists or vectors is not preserved.\n\n"
1120 "The optional arguments @var{secs} and @var{usecs} specify the\n"
1121 "timeout. Either @var{secs} can be specified alone, as\n"
1122 "either an integer or a real number, or both @var{secs} and\n"
1123 "@var{usecs} can be specified as integers, in which case\n"
1124 "@var{usecs} is an additional timeout expressed in\n"
1125 "microseconds. If @var{secs} is omitted or is @code{#f} then\n"
1126 "select will wait for as long as it takes for one of the other\n"
1127 "conditions to be satisfied.\n\n"
1128 "The scsh version of @code{select} differs as follows:\n"
1129 "Only vectors are accepted for the first three arguments.\n"
1130 "The @var{usecs} argument is not supported.\n"
1131 "Multiple values are returned instead of a list.\n"
1132 "Duplicates in the input vectors appear only once in output.\n"
1133 "An additional @code{select!} interface is provided.")
1134 #define FUNC_NAME s_scm_select
1136 struct timeval timeout
;
1137 struct timeval
* time_ptr
;
1138 SELECT_TYPE read_set
;
1139 SELECT_TYPE write_set
;
1140 SELECT_TYPE except_set
;
1144 /* these lists accumulate ports which are ready due to buffering.
1145 their file descriptors don't need to be added to the select sets. */
1146 SCM read_ports_ready
= SCM_EOL
;
1147 SCM write_ports_ready
= SCM_EOL
;
1150 if (SCM_VECTORP (reads
))
1152 read_count
= SCM_VECTOR_LENGTH (reads
);
1156 read_count
= scm_ilength (reads
);
1157 SCM_ASSERT (read_count
>= 0, reads
, SCM_ARG1
, FUNC_NAME
);
1159 if (SCM_VECTORP (writes
))
1161 write_count
= SCM_VECTOR_LENGTH (writes
);
1165 write_count
= scm_ilength (writes
);
1166 SCM_ASSERT (write_count
>= 0, writes
, SCM_ARG2
, FUNC_NAME
);
1168 if (SCM_VECTORP (excepts
))
1170 except_count
= SCM_VECTOR_LENGTH (excepts
);
1174 except_count
= scm_ilength (excepts
);
1175 SCM_ASSERT (except_count
>= 0, excepts
, SCM_ARG3
, FUNC_NAME
);
1178 FD_ZERO (&read_set
);
1179 FD_ZERO (&write_set
);
1180 FD_ZERO (&except_set
);
1182 max_fd
= fill_select_type (&read_set
, &read_ports_ready
, reads
, SCM_ARG1
);
1185 int write_max
= fill_select_type (&write_set
, &write_ports_ready
,
1187 int except_max
= fill_select_type (&except_set
, NULL
,
1190 if (write_max
> max_fd
)
1192 if (except_max
> max_fd
)
1193 max_fd
= except_max
;
1196 /* if there's a port with a ready buffer, don't block, just
1197 check for ready file descriptors. */
1198 if (!SCM_NULLP (read_ports_ready
) || !SCM_NULLP (write_ports_ready
))
1201 timeout
.tv_usec
= 0;
1202 time_ptr
= &timeout
;
1204 else if (SCM_UNBNDP (secs
) || SCM_FALSEP (secs
))
1208 if (SCM_INUMP (secs
))
1210 timeout
.tv_sec
= SCM_INUM (secs
);
1211 if (SCM_UNBNDP (usecs
))
1212 timeout
.tv_usec
= 0;
1215 SCM_VALIDATE_INUM (5,usecs
);
1216 timeout
.tv_usec
= SCM_INUM (usecs
);
1221 double fl
= scm_num2dbl (secs
, FUNC_NAME
);
1223 if (!SCM_UNBNDP (usecs
))
1224 SCM_WRONG_TYPE_ARG (4, secs
);
1226 SCM_OUT_OF_RANGE (4, secs
);
1227 timeout
.tv_sec
= (long) fl
;
1228 timeout
.tv_usec
= (long) ((fl
- timeout
.tv_sec
) * 1000000);
1230 time_ptr
= &timeout
;
1234 #ifdef GUILE_ISELECT
1235 int rv
= scm_internal_select (max_fd
+ 1,
1236 &read_set
, &write_set
, &except_set
,
1239 int rv
= select (max_fd
+ 1,
1240 &read_set
, &write_set
, &except_set
, time_ptr
);
1245 return scm_list_3 (retrieve_select_type (&read_set
, read_ports_ready
, reads
),
1246 retrieve_select_type (&write_set
, write_ports_ready
, writes
),
1247 retrieve_select_type (&except_set
, SCM_EOL
, excepts
));
1250 #endif /* HAVE_SELECT */
1255 SCM_DEFINE (scm_fcntl
, "fcntl", 2, 1, 0,
1256 (SCM object
, SCM cmd
, SCM value
),
1257 "Apply @var{command} to the specified file descriptor or the underlying\n"
1258 "file descriptor of the specified port. @var{value} is an optional\n"
1259 "integer argument.\n\n"
1260 "Values for @var{command} are:\n\n"
1263 "Duplicate a file descriptor\n"
1265 "Get flags associated with the file descriptor.\n"
1267 "Set flags associated with the file descriptor to @var{value}.\n"
1269 "Get flags associated with the open file.\n"
1271 "Set flags associated with the open file to @var{value}\n"
1273 "Get the process ID of a socket's owner, for @code{SIGIO} signals.\n"
1275 "Set the process that owns a socket to @var{value}, for @code{SIGIO} signals.\n"
1276 "@item FD_CLOEXEC\n"
1277 "The value used to indicate the \"close on exec\" flag with @code{F_GETFL} or\n"
1280 #define FUNC_NAME s_scm_fcntl
1286 object
= SCM_COERCE_OUTPORT (object
);
1288 SCM_VALIDATE_INUM (2,cmd
);
1289 if (SCM_OPFPORTP (object
))
1290 fdes
= SCM_FPORT_FDES (object
);
1293 SCM_VALIDATE_INUM (1,object
);
1294 fdes
= SCM_INUM (object
);
1297 if (SCM_UNBNDP (value
)) {
1300 SCM_VALIDATE_INUM_COPY (SCM_ARG3
, value
, ivalue
);
1303 SCM_SYSCALL (rv
= fcntl (fdes
, SCM_INUM (cmd
), ivalue
));
1306 return SCM_MAKINUM (rv
);
1309 #endif /* HAVE_FCNTL */
1311 SCM_DEFINE (scm_fsync
, "fsync", 1, 0, 0,
1313 "Copies any unwritten data for the specified output file descriptor to disk.\n"
1314 "If @var{port/fd} is a port, its buffer is flushed before the underlying\n"
1315 "file descriptor is fsync'd.\n"
1316 "The return value is unspecified.")
1317 #define FUNC_NAME s_scm_fsync
1321 object
= SCM_COERCE_OUTPORT (object
);
1323 if (SCM_OPFPORTP (object
))
1326 fdes
= SCM_FPORT_FDES (object
);
1330 SCM_VALIDATE_INUM (1,object
);
1331 fdes
= SCM_INUM (object
);
1333 if (fsync (fdes
) == -1)
1335 return SCM_UNSPECIFIED
;
1340 SCM_DEFINE (scm_symlink
, "symlink", 2, 0, 0,
1341 (SCM oldpath
, SCM newpath
),
1342 "Create a symbolic link named @var{path-to} with the value (i.e., pointing to)\n"
1343 "@var{path-from}. The return value is unspecified.")
1344 #define FUNC_NAME s_scm_symlink
1348 SCM_VALIDATE_STRING (1, oldpath
);
1349 SCM_VALIDATE_STRING (2, newpath
);
1350 SCM_SYSCALL (val
= symlink (SCM_STRING_CHARS (oldpath
), SCM_STRING_CHARS (newpath
)));
1353 return SCM_UNSPECIFIED
;
1356 #endif /* HAVE_SYMLINK */
1358 #ifdef HAVE_READLINK
1359 SCM_DEFINE (scm_readlink
, "readlink", 1, 0, 0,
1361 "Return the value of the symbolic link named by @var{path} (a\n"
1362 "string), i.e., the file that the link points to.")
1363 #define FUNC_NAME s_scm_readlink
1369 SCM_VALIDATE_STRING (1, path
);
1370 buf
= scm_malloc (size
);
1371 while ((rv
= readlink (SCM_STRING_CHARS (path
), buf
, size
)) == size
)
1375 buf
= scm_malloc (size
);
1379 result
= scm_mem2string (buf
, rv
);
1384 #endif /* HAVE_READLINK */
1387 SCM_DEFINE (scm_lstat
, "lstat", 1, 0, 0,
1389 "Similar to @code{stat}, but does not follow symbolic links, i.e.,\n"
1390 "it will return information about a symbolic link itself, not the\n"
1391 "file it points to. @var{path} must be a string.")
1392 #define FUNC_NAME s_scm_lstat
1395 struct stat stat_temp
;
1397 SCM_VALIDATE_STRING (1, str
);
1398 SCM_SYSCALL (rv
= lstat (SCM_STRING_CHARS (str
), &stat_temp
));
1403 SCM_SYSERROR_MSG ("~A: ~S",
1404 scm_list_2 (scm_makfrom0str (strerror (errno
)), str
),
1407 return scm_stat2scm(&stat_temp
);
1410 #endif /* HAVE_LSTAT */
1412 SCM_DEFINE (scm_copy_file
, "copy-file", 2, 0, 0,
1413 (SCM oldfile
, SCM newfile
),
1414 "Copy the file specified by @var{path-from} to @var{path-to}.\n"
1415 "The return value is unspecified.")
1416 #define FUNC_NAME s_scm_copy_file
1421 struct stat oldstat
;
1423 SCM_VALIDATE_STRING (1, oldfile
);
1424 SCM_VALIDATE_STRING (2, newfile
);
1425 if (stat (SCM_STRING_CHARS (oldfile
), &oldstat
) == -1)
1427 oldfd
= open (SCM_STRING_CHARS (oldfile
), O_RDONLY
);
1431 /* use POSIX flags instead of 07777?. */
1432 newfd
= open (SCM_STRING_CHARS (newfile
), O_WRONLY
| O_CREAT
| O_TRUNC
,
1433 oldstat
.st_mode
& 07777);
1437 while ((n
= read (oldfd
, buf
, sizeof buf
)) > 0)
1438 if (write (newfd
, buf
, n
) != n
)
1445 if (close (newfd
) == -1)
1447 return SCM_UNSPECIFIED
;
1452 /* Filename manipulation */
1456 SCM_DEFINE (scm_dirname
, "dirname", 1, 0, 0,
1458 "Return the directory name component of the file name\n"
1459 "@var{filename}. If @var{filename} does not contain a directory\n"
1460 "component, @code{.} is returned.")
1461 #define FUNC_NAME s_scm_dirname
1465 unsigned long int len
;
1467 SCM_VALIDATE_STRING (1,filename
);
1469 s
= SCM_STRING_CHARS (filename
);
1470 len
= SCM_STRING_LENGTH (filename
);
1474 while (i
>= 0 && (s
[i
] == '/' || s
[i
] == '\\')) --i
;
1475 while (i
>= 0 && (s
[i
] != '/' && s
[i
] != '\\')) --i
;
1476 while (i
>= 0 && (s
[i
] == '/' || s
[i
] == '\\')) --i
;
1478 while (i
>= 0 && s
[i
] == '/') --i
;
1479 while (i
>= 0 && s
[i
] != '/') --i
;
1480 while (i
>= 0 && s
[i
] == '/') --i
;
1481 #endif /* ndef __MINGW32__ */
1485 if (len
> 0 && (s
[0] == '/' || s
[0] == '\\'))
1487 if (len
> 0 && s
[0] == '/')
1488 #endif /* ndef __MINGW32__ */
1489 return scm_substring (filename
, SCM_INUM0
, SCM_MAKINUM (1));
1491 return scm_dot_string
;
1494 return scm_substring (filename
, SCM_INUM0
, SCM_MAKINUM (i
+ 1));
1498 SCM_DEFINE (scm_basename
, "basename", 1, 1, 0,
1499 (SCM filename
, SCM suffix
),
1500 "Return the base name of the file name @var{filename}. The\n"
1501 "base name is the file name without any directory components.\n"
1502 "If @var{suffix} is privided, and is equal to the end of\n"
1503 "@var{basename}, it is removed also.")
1504 #define FUNC_NAME s_scm_basename
1509 SCM_VALIDATE_STRING (1,filename
);
1510 f
= SCM_STRING_CHARS (filename
);
1511 len
= SCM_STRING_LENGTH (filename
);
1513 if (SCM_UNBNDP (suffix
))
1517 SCM_VALIDATE_STRING (2, suffix
);
1518 s
= SCM_STRING_CHARS (suffix
);
1519 j
= SCM_STRING_LENGTH (suffix
) - 1;
1523 while (i
>= 0 && (f
[i
] == '/' || f
[i
] == '\\')) --i
;
1525 while (i
>= 0 && f
[i
] == '/') --i
;
1526 #endif /* ndef __MINGW32__ */
1528 while (i
>= 0 && j
>= 0 && f
[i
] == s
[j
]) --i
, --j
;
1532 while (i
>= 0 && (f
[i
] != '/' || f
[i
] != '\\')) --i
;
1534 while (i
>= 0 && f
[i
] != '/') --i
;
1535 #endif /* ndef __MINGW32__ */
1539 if (len
> 0 && (f
[0] == '/' || f
[i
] == '\\'))
1541 if (len
> 0 && f
[0] == '/')
1542 #endif /* ndef __MINGW32__ */
1543 return scm_substring (filename
, SCM_INUM0
, SCM_MAKINUM (1));
1545 return scm_dot_string
;
1548 return scm_substring (filename
, SCM_MAKINUM (i
+ 1), SCM_MAKINUM (end
+ 1));
1559 scm_tc16_dir
= scm_make_smob_type ("directory", 0);
1560 scm_set_smob_free (scm_tc16_dir
, scm_dir_free
);
1561 scm_set_smob_print (scm_tc16_dir
, scm_dir_print
);
1563 scm_dot_string
= scm_permanent_object (scm_makfrom0str ("."));
1566 scm_c_define ("O_RDONLY", scm_long2num (O_RDONLY
));
1569 scm_c_define ("O_WRONLY", scm_long2num (O_WRONLY
));
1572 scm_c_define ("O_RDWR", scm_long2num (O_RDWR
));
1575 scm_c_define ("O_CREAT", scm_long2num (O_CREAT
));
1578 scm_c_define ("O_EXCL", scm_long2num (O_EXCL
));
1581 scm_c_define ("O_NOCTTY", scm_long2num (O_NOCTTY
));
1584 scm_c_define ("O_TRUNC", scm_long2num (O_TRUNC
));
1587 scm_c_define ("O_APPEND", scm_long2num (O_APPEND
));
1590 scm_c_define ("O_NONBLOCK", scm_long2num (O_NONBLOCK
));
1593 scm_c_define ("O_NDELAY", scm_long2num (O_NDELAY
));
1596 scm_c_define ("O_SYNC", scm_long2num (O_SYNC
));
1600 scm_c_define ("F_DUPFD", scm_long2num (F_DUPFD
));
1603 scm_c_define ("F_GETFD", scm_long2num (F_GETFD
));
1606 scm_c_define ("F_SETFD", scm_long2num (F_SETFD
));
1609 scm_c_define ("F_GETFL", scm_long2num (F_GETFL
));
1612 scm_c_define ("F_SETFL", scm_long2num (F_SETFL
));
1615 scm_c_define ("F_GETOWN", scm_long2num (F_GETOWN
));
1618 scm_c_define ("F_SETOWN", scm_long2num (F_SETOWN
));
1621 scm_c_define ("FD_CLOEXEC", scm_long2num (FD_CLOEXEC
));
1624 #ifndef SCM_MAGIC_SNARFER
1625 #include "libguile/filesys.x"