1 /* Directory hashing for GNU Make.
2 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
4 2012 Free Software Foundation, Inc.
5 This file is part of GNU Make.
7 GNU Make is free software; you can redistribute it and/or modify it under the
8 terms of the GNU General Public License as published by the Free Software
9 Foundation; either version 3 of the License, or (at your option) any later
12 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
14 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along with
17 this program. If not, see <http://www.gnu.org/licenses/>. */
24 # define NAMLEN(dirent) strlen((dirent)->d_name)
26 /* its prototype is in vmsdir.h, which is not needed for HAVE_DIRENT_H */
27 const char *vmsify (const char *name
, int type
);
30 # define dirent direct
31 # define NAMLEN(dirent) (dirent)->d_namlen
32 # ifdef HAVE_SYS_NDIR_H
33 # include <sys/ndir.h>
35 # ifdef HAVE_SYS_DIR_H
43 # endif /* HAVE_VMSDIR_H */
46 /* In GNU systems, <dirent.h> defines this macro for us. */
49 # define NAMLEN(d) _D_NAMLEN(d)
52 #if (defined (POSIX) || defined (VMS) || defined (WINDOWS32)) && !defined (__GNU_LIBRARY__)
53 /* Posix does not require that the d_ino field be present, and some
54 systems do not provide it. */
55 # define REAL_DIR_ENTRY(dp) 1
56 # define FAKE_DIR_ENTRY(dp)
58 # define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
59 # define FAKE_DIR_ENTRY(dp) (dp->d_ino = 1)
66 /* If it's MSDOS that doesn't have _USE_LFN, disable LFN support. */
72 dosify (const char *filename
)
74 static char dos_filename
[14];
78 if (filename
== 0 || _USE_LFN
)
81 /* FIXME: what about filenames which violate
82 8+3 constraints, like "config.h.in", or ".emacs"? */
83 if (strpbrk (filename
, "\"*+,;<=>?[\\]|") != 0)
88 /* First, transform the name part. */
89 for (i
= 0; *filename
!= '\0' && i
< 8 && *filename
!= '.'; ++i
)
90 *df
++ = tolower ((unsigned char)*filename
++);
92 /* Now skip to the next dot. */
93 while (*filename
!= '\0' && *filename
!= '.')
95 if (*filename
!= '\0')
98 for (i
= 0; *filename
!= '\0' && i
< 3 && *filename
!= '.'; ++i
)
99 *df
++ = tolower ((unsigned char)*filename
++);
102 /* Look for more dots. */
103 while (*filename
!= '\0' && *filename
!= '.')
105 if (*filename
== '.')
110 #endif /* __MSDOS__ */
113 #include "pathstuff.h"
120 #ifdef HAVE_CASE_INSENSITIVE_FS
122 downcase (const char *filename
)
124 static PATH_VAR (new_filename
);
131 while (*filename
!= '\0')
133 *df
++ = tolower ((unsigned char)*filename
);
141 #endif /* HAVE_CASE_INSENSITIVE_FS */
146 vms_hash (const char *name
)
153 unsigned char uc
= *name
;
154 #ifdef HAVE_CASE_INSENSITIVE_FS
155 h
= (h
<< 4) + (isupper (uc
) ? tolower (uc
) : uc
);
170 /* fake stat entry for a directory */
172 vmsstat_dir (const char *name
, struct stat
*st
)
178 dir
= opendir (name
);
182 s
= strchr (name
, ':'); /* find device */
185 /* to keep the compiler happy we said "const char *name", now we cheat */
187 st
->st_dev
= (char *)vms_hash (name
);
197 st
->st_ino
[0] = h
& 0xff;
198 st
->st_ino
[1] = h
& 0xff00;
199 st
->st_ino
[2] = h
>> 16;
205 /* Hash table of directories. */
207 #ifndef DIRECTORY_BUCKETS
208 #define DIRECTORY_BUCKETS 199
211 struct directory_contents
213 dev_t dev
; /* Device and inode numbers of this dir. */
215 /* Inode means nothing on WINDOWS32. Even file key information is
216 * unreliable because it is random per file open and undefined for remote
217 * filesystems. The most unique attribute I can come up with is the fully
218 * qualified name of the directory. Beware though, this is also
219 * unreliable. I'm open to suggestion on a better way to emulate inode. */
222 int mtime
; /* controls check for stale directory cache */
223 int fs_flags
; /* FS_FAT, FS_NTFS, ... */
226 # define FS_UNKNOWN 0x4
233 #endif /* WINDOWS32 */
234 struct hash_table dirfiles
; /* Files in this directory. */
235 DIR *dirstream
; /* Stream reading this directory. */
239 directory_contents_hash_1 (const void *key_0
)
241 const struct directory_contents
*key
= key_0
;
246 ISTRING_HASH_1 (key
->path_key
, hash
);
247 hash
^= ((unsigned int) key
->dev
<< 4) ^ (unsigned int) key
->ctime
;
250 hash
= (((unsigned int) key
->dev
<< 4)
251 ^ ((unsigned int) key
->ino
[0]
252 + (unsigned int) key
->ino
[1]
253 + (unsigned int) key
->ino
[2]));
255 hash
= ((unsigned int) key
->dev
<< 4) ^ (unsigned int) key
->ino
;
257 #endif /* WINDOWS32 */
262 directory_contents_hash_2 (const void *key_0
)
264 const struct directory_contents
*key
= key_0
;
269 ISTRING_HASH_2 (key
->path_key
, hash
);
270 hash
^= ((unsigned int) key
->dev
<< 4) ^ (unsigned int) ~key
->ctime
;
273 hash
= (((unsigned int) key
->dev
<< 4)
274 ^ ~((unsigned int) key
->ino
[0]
275 + (unsigned int) key
->ino
[1]
276 + (unsigned int) key
->ino
[2]));
278 hash
= ((unsigned int) key
->dev
<< 4) ^ (unsigned int) ~key
->ino
;
280 #endif /* WINDOWS32 */
285 /* Sometimes it's OK to use subtraction to get this value:
287 But, if we're not sure of the type of X and Y they may be too large for an
288 int (on a 64-bit system for example). So, use ?: instead.
289 See Savannah bug #15534.
291 NOTE! This macro has side-effects!
294 #define MAKECMP(_x,_y) ((_x)<(_y)?-1:((_x)==(_y)?0:1))
297 directory_contents_hash_cmp (const void *xv
, const void *yv
)
299 const struct directory_contents
*x
= xv
;
300 const struct directory_contents
*y
= yv
;
304 ISTRING_COMPARE (x
->path_key
, y
->path_key
, result
);
307 result
= MAKECMP(x
->ctime
, y
->ctime
);
312 result
= MAKECMP(x
->ino
[0], y
->ino
[0]);
315 result
= MAKECMP(x
->ino
[1], y
->ino
[1]);
318 result
= MAKECMP(x
->ino
[2], y
->ino
[2]);
322 result
= MAKECMP(x
->ino
, y
->ino
);
326 #endif /* WINDOWS32 */
328 return MAKECMP(x
->dev
, y
->dev
);
331 /* Table of directory contents hashed by device and inode number. */
332 static struct hash_table directory_contents
;
336 const char *name
; /* Name of the directory. */
338 /* The directory's contents. This data may be shared by several
339 entries in the hash table, which refer to the same directory
340 (identified uniquely by 'dev' and 'ino') under different names. */
341 struct directory_contents
*contents
;
345 directory_hash_1 (const void *key
)
347 return_ISTRING_HASH_1 (((const struct directory
*) key
)->name
);
351 directory_hash_2 (const void *key
)
353 return_ISTRING_HASH_2 (((const struct directory
*) key
)->name
);
357 directory_hash_cmp (const void *x
, const void *y
)
359 return_ISTRING_COMPARE (((const struct directory
*) x
)->name
,
360 ((const struct directory
*) y
)->name
);
363 /* Table of directories hashed by name. */
364 static struct hash_table directories
;
366 /* Never have more than this many directories open at once. */
368 #define MAX_OPEN_DIRECTORIES 10
370 static unsigned int open_directories
= 0;
373 /* Hash table of files in each directory. */
377 const char *name
; /* Name of the file. */
379 short impossible
; /* This file is impossible. */
383 dirfile_hash_1 (const void *key
)
385 return_ISTRING_HASH_1 (((struct dirfile
const *) key
)->name
);
389 dirfile_hash_2 (const void *key
)
391 return_ISTRING_HASH_2 (((struct dirfile
const *) key
)->name
);
395 dirfile_hash_cmp (const void *xv
, const void *yv
)
397 const struct dirfile
*x
= xv
;
398 const struct dirfile
*y
= yv
;
399 int result
= x
->length
- y
->length
;
402 return_ISTRING_COMPARE (x
->name
, y
->name
);
405 #ifndef DIRFILE_BUCKETS
406 #define DIRFILE_BUCKETS 107
409 static int dir_contents_file_exists_p (struct directory_contents
*dir
,
410 const char *filename
);
411 static struct directory
*find_directory (const char *name
);
413 /* Find the directory named NAME and return its 'struct directory'. */
415 static struct directory
*
416 find_directory (const char *name
)
419 struct directory
*dir
;
420 struct directory
**dir_slot
;
421 struct directory dir_key
;
425 char fs_label
[BUFSIZ
];
426 char fs_type
[BUFSIZ
];
427 unsigned long fs_serno
;
428 unsigned long fs_flags
;
429 unsigned long fs_len
;
432 if ((*name
== '.') && (*(name
+1) == 0))
435 name
= vmsify (name
,1);
439 dir_slot
= (struct directory
**) hash_find_slot (&directories
, &dir_key
);
442 if (HASH_VACANT (dir
))
446 /* The directory was not found. Create a new entry for it. */
448 p
= name
+ strlen (name
);
449 dir
= xmalloc (sizeof (struct directory
));
450 #if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
451 dir
->name
= strcache_add_len (downcase(name
), p
- name
);
453 dir
->name
= strcache_add_len (name
, p
- name
);
455 hash_insert_at (&directories
, dir
, dir_slot
);
456 /* The directory is not in the name hash table.
457 Find its device and inode numbers, and look it up by them. */
460 r
= vmsstat_dir (name
, &st
);
461 #elif defined(WINDOWS32)
463 char tem
[MAXPATHLEN
], *tstart
, *tend
;
465 /* Remove any trailing slashes. Windows32 stat fails even on
466 valid directories if they end in a slash. */
467 memcpy (tem
, name
, p
- name
+ 1);
469 if (tstart
[1] == ':')
471 for (tend
= tem
+ (p
- name
- 1);
472 tend
> tstart
&& (*tend
== '/' || *tend
== '\\');
479 EINTRLOOP (r
, stat (name
, &st
));
484 /* Couldn't stat the directory. Mark this by
485 setting the 'contents' member to a nil pointer. */
490 /* Search the contents hash table; device and inode are the key. */
492 struct directory_contents
*dc
;
493 struct directory_contents
**dc_slot
;
494 struct directory_contents dc_key
;
496 dc_key
.dev
= st
.st_dev
;
498 dc_key
.path_key
= w32_path
= w32ify (name
, 1);
499 dc_key
.ctime
= st
.st_ctime
;
502 dc_key
.ino
[0] = st
.st_ino
[0];
503 dc_key
.ino
[1] = st
.st_ino
[1];
504 dc_key
.ino
[2] = st
.st_ino
[2];
506 dc_key
.ino
= st
.st_ino
;
509 dc_slot
= (struct directory_contents
**) hash_find_slot (&directory_contents
, &dc_key
);
512 if (HASH_VACANT (dc
))
514 /* Nope; this really is a directory we haven't seen before. */
516 dc
= (struct directory_contents
*)
517 xmalloc (sizeof (struct directory_contents
));
519 /* Enter it in the contents hash table. */
522 dc
->path_key
= xstrdup (w32_path
);
523 dc
->ctime
= st
.st_ctime
;
524 dc
->mtime
= st
.st_mtime
;
527 * NTFS is the only WINDOWS32 filesystem that bumps mtime
528 * on a directory when files are added/deleted from
532 if (GetVolumeInformation(w32_path
,
533 fs_label
, sizeof (fs_label
),
535 &fs_flags
, fs_type
, sizeof (fs_type
)) == FALSE
)
536 dc
->fs_flags
= FS_UNKNOWN
;
537 else if (!strcmp(fs_type
, "FAT"))
538 dc
->fs_flags
= FS_FAT
;
539 else if (!strcmp(fs_type
, "NTFS"))
540 dc
->fs_flags
= FS_NTFS
;
542 dc
->fs_flags
= FS_UNKNOWN
;
545 dc
->ino
[0] = st
.st_ino
[0];
546 dc
->ino
[1] = st
.st_ino
[1];
547 dc
->ino
[2] = st
.st_ino
[2];
551 #endif /* WINDOWS32 */
552 hash_insert_at (&directory_contents
, dc
, dc_slot
);
553 ENULLLOOP (dc
->dirstream
, opendir (name
));
554 if (dc
->dirstream
== 0)
555 /* Couldn't open the directory. Mark this by setting the
556 'files' member to a nil pointer. */
557 dc
->dirfiles
.ht_vec
= 0;
560 hash_init (&dc
->dirfiles
, DIRFILE_BUCKETS
,
561 dirfile_hash_1
, dirfile_hash_2
, dirfile_hash_cmp
);
562 /* Keep track of how many directories are open. */
564 if (open_directories
== MAX_OPEN_DIRECTORIES
)
565 /* We have too many directories open already.
566 Read the entire directory and then close it. */
567 dir_contents_file_exists_p (dc
, 0);
571 /* Point the name-hashed entry for DIR at its contents data. */
579 /* Return 1 if the name FILENAME is entered in DIR's hash table.
580 FILENAME must contain no slashes. */
583 dir_contents_file_exists_p (struct directory_contents
*dir
,
584 const char *filename
)
594 if (dir
== 0 || dir
->dirfiles
.ht_vec
== 0)
595 /* The directory could not be stat'd or opened. */
599 filename
= dosify (filename
);
602 #ifdef HAVE_CASE_INSENSITIVE_FS
603 filename
= downcase (filename
);
608 _fnlwr (filename
); /* lower case for FAT drives */
612 filename
= vmsify (filename
,0);
618 struct dirfile dirfile_key
;
620 if (*filename
== '\0')
622 /* Checking if the directory exists. */
625 dirfile_key
.name
= filename
;
626 dirfile_key
.length
= strlen (filename
);
627 df
= hash_find_item (&dir
->dirfiles
, &dirfile_key
);
629 return !df
->impossible
;
632 /* The file was not found in the hashed list.
633 Try to read the directory further. */
635 if (dir
->dirstream
== 0)
639 * Check to see if directory has changed since last read. FAT
640 * filesystems force a rehash always as mtime does not change
641 * on directories (ugh!).
645 if ((dir
->fs_flags
& FS_FAT
) != 0)
647 dir
->mtime
= time ((time_t *) 0);
650 else if (stat (dir
->path_key
, &st
) == 0 && st
.st_mtime
> dir
->mtime
)
652 /* reset date stamp to show most recent re-process. */
653 dir
->mtime
= st
.st_mtime
;
657 /* If it has been already read in, all done. */
661 /* make sure directory can still be opened; if not return. */
662 dir
->dirstream
= opendir (dir
->path_key
);
668 /* The directory has been all read in. */
674 /* Enter the file in the hash table. */
676 struct dirfile dirfile_key
;
677 struct dirfile
**dirfile_slot
;
679 ENULLLOOP (d
, readdir (dir
->dirstream
));
683 fatal (NILF
, "INTERNAL: readdir: %s\n", strerror (errno
));
687 #if defined(VMS) && defined(HAVE_DIRENT_H)
688 /* In VMS we get file versions too, which have to be stripped off */
690 char *p
= strrchr (d
->d_name
, ';');
695 if (!REAL_DIR_ENTRY (d
))
699 dirfile_key
.name
= d
->d_name
;
700 dirfile_key
.length
= len
;
701 dirfile_slot
= (struct dirfile
**) hash_find_slot (&dir
->dirfiles
, &dirfile_key
);
704 * If re-reading a directory, don't cache files that have
705 * already been discovered.
707 if (! rehash
|| HASH_VACANT (*dirfile_slot
))
710 df
= xmalloc (sizeof (struct dirfile
));
711 #if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
712 df
->name
= strcache_add_len (downcase(d
->d_name
), len
);
714 df
->name
= strcache_add_len (d
->d_name
, len
);
718 hash_insert_at (&dir
->dirfiles
, df
, dirfile_slot
);
720 /* Check if the name matches the one we're searching for. */
721 if (filename
!= 0 && patheq (d
->d_name
, filename
))
725 /* If the directory has been completely read in,
726 close the stream and reset the pointer to nil. */
730 closedir (dir
->dirstream
);
736 /* Return 1 if the name FILENAME in directory DIRNAME
737 is entered in the dir hash table.
738 FILENAME must contain no slashes. */
741 dir_file_exists_p (const char *dirname
, const char *filename
)
743 return dir_contents_file_exists_p (find_directory (dirname
)->contents
,
747 /* Return 1 if the file named NAME exists. */
750 file_exists_p (const char *name
)
758 return ar_member_date (name
) != (time_t) -1;
762 dirend
= strrchr (name
, ']');
764 dirend
= strrchr (name
, ':');
766 return dir_file_exists_p ("[]", name
);
768 dirend
= strrchr (name
, '/');
769 #ifdef HAVE_DOS_PATHS
770 /* Forward and backslashes might be mixed. We need the rightmost one. */
772 const char *bslash
= strrchr(name
, '\\');
773 if (!dirend
|| bslash
> dirend
)
775 /* The case of "d:file". */
776 if (!dirend
&& name
[0] && name
[1] == ':')
779 #endif /* HAVE_DOS_PATHS */
782 return dir_file_exists_p (".", name
);
783 #else /* !VMS && !AMIGA */
784 return dir_file_exists_p ("", name
);
794 #ifdef HAVE_DOS_PATHS
795 /* d:/ and d: are *very* different... */
796 if (dirend
< name
+ 3 && name
[1] == ':' &&
797 (*dirend
== '/' || *dirend
== '\\' || *dirend
== ':'))
800 p
= alloca (dirend
- name
+ 1);
801 memcpy (p
, name
, dirend
- name
);
802 p
[dirend
- name
] = '\0';
805 return dir_file_exists_p (dirname
, slash
+ 1);
808 /* Mark FILENAME as 'impossible' for 'file_impossible_p'.
809 This means an attempt has been made to search for FILENAME
810 as an intermediate file, and it has failed. */
813 file_impossible (const char *filename
)
816 const char *p
= filename
;
817 struct directory
*dir
;
821 dirend
= strrchr (p
, ']');
823 dirend
= strrchr (p
, ':');
825 if (dirend
== (char *)1)
826 dir
= find_directory ("[]");
828 dirend
= strrchr (p
, '/');
829 # ifdef HAVE_DOS_PATHS
830 /* Forward and backslashes might be mixed. We need the rightmost one. */
832 const char *bslash
= strrchr(p
, '\\');
833 if (!dirend
|| bslash
> dirend
)
835 /* The case of "d:file". */
836 if (!dirend
&& p
[0] && p
[1] == ':')
839 # endif /* HAVE_DOS_PATHS */
842 dir
= find_directory ("");
843 # else /* !VMS && !AMIGA */
844 dir
= find_directory (".");
850 const char *slash
= dirend
;
856 #ifdef HAVE_DOS_PATHS
857 /* d:/ and d: are *very* different... */
858 if (dirend
< p
+ 3 && p
[1] == ':' &&
859 (*dirend
== '/' || *dirend
== '\\' || *dirend
== ':'))
862 cp
= alloca (dirend
- p
+ 1);
863 memcpy (cp
, p
, dirend
- p
);
864 cp
[dirend
- p
] = '\0';
867 dir
= find_directory (dirname
);
868 filename
= p
= slash
+ 1;
871 if (dir
->contents
== 0)
872 /* The directory could not be stat'd. We allocate a contents
873 structure for it, but leave it out of the contents hash table. */
874 dir
->contents
= xcalloc (sizeof (struct directory_contents
));
876 if (dir
->contents
->dirfiles
.ht_vec
== 0)
878 hash_init (&dir
->contents
->dirfiles
, DIRFILE_BUCKETS
,
879 dirfile_hash_1
, dirfile_hash_2
, dirfile_hash_cmp
);
882 /* Make a new entry and put it in the table. */
884 new = xmalloc (sizeof (struct dirfile
));
885 new->length
= strlen (filename
);
886 #if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
887 new->name
= strcache_add_len (downcase(filename
), new->length
);
889 new->name
= strcache_add_len (filename
, new->length
);
892 hash_insert (&dir
->contents
->dirfiles
, new);
895 /* Return nonzero if FILENAME has been marked impossible. */
898 file_impossible_p (const char *filename
)
901 const char *p
= filename
;
902 struct directory_contents
*dir
;
903 struct dirfile
*dirfile
;
904 struct dirfile dirfile_key
;
907 dirend
= strrchr (filename
, ']');
909 dir
= find_directory ("[]")->contents
;
911 dirend
= strrchr (filename
, '/');
912 #ifdef HAVE_DOS_PATHS
913 /* Forward and backslashes might be mixed. We need the rightmost one. */
915 const char *bslash
= strrchr(filename
, '\\');
916 if (!dirend
|| bslash
> dirend
)
918 /* The case of "d:file". */
919 if (!dirend
&& filename
[0] && filename
[1] == ':')
920 dirend
= filename
+ 1;
922 #endif /* HAVE_DOS_PATHS */
925 dir
= find_directory ("")->contents
;
926 #else /* !VMS && !AMIGA */
927 dir
= find_directory (".")->contents
;
933 const char *slash
= dirend
;
934 if (dirend
== filename
)
939 #ifdef HAVE_DOS_PATHS
940 /* d:/ and d: are *very* different... */
941 if (dirend
< filename
+ 3 && filename
[1] == ':' &&
942 (*dirend
== '/' || *dirend
== '\\' || *dirend
== ':'))
945 cp
= alloca (dirend
- filename
+ 1);
946 memcpy (cp
, p
, dirend
- p
);
947 cp
[dirend
- p
] = '\0';
950 dir
= find_directory (dirname
)->contents
;
951 p
= filename
= slash
+ 1;
954 if (dir
== 0 || dir
->dirfiles
.ht_vec
== 0)
955 /* There are no files entered for this directory. */
959 filename
= dosify (p
);
961 #ifdef HAVE_CASE_INSENSITIVE_FS
962 filename
= downcase (p
);
965 filename
= vmsify (p
, 1);
968 dirfile_key
.name
= filename
;
969 dirfile_key
.length
= strlen (filename
);
970 dirfile
= hash_find_item (&dir
->dirfiles
, &dirfile_key
);
972 return dirfile
->impossible
;
977 /* Return the already allocated name in the
978 directory hash table that matches DIR. */
981 dir_name (const char *dir
)
983 return find_directory (dir
)->name
;
986 /* Print the data base of directories. */
989 print_dir_data_base (void)
992 unsigned int impossible
;
993 struct directory
**dir_slot
;
994 struct directory
**dir_end
;
996 puts (_("\n# Directories\n"));
998 files
= impossible
= 0;
1000 dir_slot
= (struct directory
**) directories
.ht_vec
;
1001 dir_end
= dir_slot
+ directories
.ht_size
;
1002 for ( ; dir_slot
< dir_end
; dir_slot
++)
1004 struct directory
*dir
= *dir_slot
;
1005 if (! HASH_VACANT (dir
))
1007 if (dir
->contents
== 0)
1008 printf (_("# %s: could not be stat'd.\n"), dir
->name
);
1009 else if (dir
->contents
->dirfiles
.ht_vec
== 0)
1012 printf (_("# %s (key %s, mtime %d): could not be opened.\n"),
1013 dir
->name
, dir
->contents
->path_key
,dir
->contents
->mtime
);
1014 #else /* WINDOWS32 */
1016 printf (_("# %s (device %d, inode [%d,%d,%d]): could not be opened.\n"),
1017 dir
->name
, dir
->contents
->dev
,
1018 dir
->contents
->ino
[0], dir
->contents
->ino
[1],
1019 dir
->contents
->ino
[2]);
1021 printf (_("# %s (device %ld, inode %ld): could not be opened.\n"),
1022 dir
->name
, (long int) dir
->contents
->dev
,
1023 (long int) dir
->contents
->ino
);
1025 #endif /* WINDOWS32 */
1030 unsigned int im
= 0;
1031 struct dirfile
**files_slot
;
1032 struct dirfile
**files_end
;
1034 files_slot
= (struct dirfile
**) dir
->contents
->dirfiles
.ht_vec
;
1035 files_end
= files_slot
+ dir
->contents
->dirfiles
.ht_size
;
1036 for ( ; files_slot
< files_end
; files_slot
++)
1038 struct dirfile
*df
= *files_slot
;
1039 if (! HASH_VACANT (df
))
1048 printf (_("# %s (key %s, mtime %d): "),
1049 dir
->name
, dir
->contents
->path_key
, dir
->contents
->mtime
);
1050 #else /* WINDOWS32 */
1052 printf (_("# %s (device %d, inode [%d,%d,%d]): "),
1053 dir
->name
, dir
->contents
->dev
,
1054 dir
->contents
->ino
[0], dir
->contents
->ino
[1],
1055 dir
->contents
->ino
[2]);
1057 printf (_("# %s (device %ld, inode %ld): "),
1059 (long)dir
->contents
->dev
, (long)dir
->contents
->ino
);
1061 #endif /* WINDOWS32 */
1063 fputs (_("No"), stdout
);
1066 fputs (_(" files, "), stdout
);
1068 fputs (_("no"), stdout
);
1071 fputs (_(" impossibilities"), stdout
);
1072 if (dir
->contents
->dirstream
== 0)
1075 puts (_(" so far."));
1082 fputs ("\n# ", stdout
);
1084 fputs (_("No"), stdout
);
1086 printf ("%u", files
);
1087 fputs (_(" files, "), stdout
);
1088 if (impossible
== 0)
1089 fputs (_("no"), stdout
);
1091 printf ("%u", impossible
);
1092 printf (_(" impossibilities in %lu directories.\n"), directories
.ht_fill
);
1095 /* Hooks for globbing. */
1099 /* Structure describing state of iterating through a directory hash table. */
1103 struct directory_contents
*contents
; /* The directory being read. */
1104 struct dirfile
**dirfile_slot
; /* Current slot in table. */
1107 /* Forward declarations. */
1108 static __ptr_t
open_dirstream (const char *);
1109 static struct dirent
*read_dirstream (__ptr_t
);
1112 open_dirstream (const char *directory
)
1114 struct dirstream
*new;
1115 struct directory
*dir
= find_directory (directory
);
1117 if (dir
->contents
== 0 || dir
->contents
->dirfiles
.ht_vec
== 0)
1118 /* DIR->contents is nil if the directory could not be stat'd.
1119 DIR->contents->dirfiles is nil if it could not be opened. */
1122 /* Read all the contents of the directory now. There is no benefit
1123 in being lazy, since glob will want to see every file anyway. */
1125 dir_contents_file_exists_p (dir
->contents
, 0);
1127 new = xmalloc (sizeof (struct dirstream
));
1128 new->contents
= dir
->contents
;
1129 new->dirfile_slot
= (struct dirfile
**) new->contents
->dirfiles
.ht_vec
;
1131 return (__ptr_t
) new;
1134 static struct dirent
*
1135 read_dirstream (__ptr_t stream
)
1138 static unsigned int bufsz
;
1140 struct dirstream
*const ds
= (struct dirstream
*) stream
;
1141 struct directory_contents
*dc
= ds
->contents
;
1142 struct dirfile
**dirfile_end
= (struct dirfile
**) dc
->dirfiles
.ht_vec
+ dc
->dirfiles
.ht_size
;
1144 while (ds
->dirfile_slot
< dirfile_end
)
1146 struct dirfile
*df
= *ds
->dirfile_slot
++;
1147 if (! HASH_VACANT (df
) && !df
->impossible
)
1149 /* The glob interface wants a 'struct dirent', so mock one up. */
1151 unsigned int len
= df
->length
+ 1;
1152 unsigned int sz
= sizeof (*d
) - sizeof (d
->d_name
) + len
;
1158 buf
= xrealloc (buf
, bufsz
);
1160 d
= (struct dirent
*) buf
;
1162 # if __MINGW32_MAJOR_VERSION < 3 || (__MINGW32_MAJOR_VERSION == 3 && \
1163 __MINGW32_MINOR_VERSION == 0)
1164 d
->d_name
= xmalloc(len
);
1168 #ifdef _DIRENT_HAVE_D_NAMLEN
1169 d
->d_namlen
= len
- 1;
1171 #ifdef _DIRENT_HAVE_D_TYPE
1172 d
->d_type
= DT_UNKNOWN
;
1174 memcpy (d
->d_name
, df
->name
, len
);
1189 /* On 64 bit ReliantUNIX (5.44 and above) in LFS mode, stat() is actually a
1190 * macro for stat64(). If stat is a macro, make a local wrapper function to
1195 int stat (const char *path
, struct stat
*sbuf
);
1197 # define local_stat stat
1200 local_stat (const char *path
, struct stat
*buf
)
1204 EINTRLOOP (e
, stat (path
, buf
));
1210 dir_setup_glob (glob_t
*gl
)
1212 gl
->gl_opendir
= open_dirstream
;
1213 gl
->gl_readdir
= read_dirstream
;
1214 gl
->gl_closedir
= ansi_free
;
1215 gl
->gl_stat
= local_stat
;
1216 /* We don't bother setting gl_lstat, since glob never calls it.
1217 The slot is only there for compatibility with 4.4 BSD. */
1221 hash_init_directories (void)
1223 hash_init (&directories
, DIRECTORY_BUCKETS
,
1224 directory_hash_1
, directory_hash_2
, directory_hash_cmp
);
1225 hash_init (&directory_contents
, DIRECTORY_BUCKETS
,
1226 directory_contents_hash_1
, directory_contents_hash_2
,
1227 directory_contents_hash_cmp
);