dir.c@ 2754

Last change on this file since 2754 was 2734, checked in by bird, 10 years ago
quick build fix - should make all use our glob instead...
Property svn:eol-style set to `native`
File size: 38.1 KB

Line
1	/* Directory hashing for GNU Make.
2	Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3	1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
4	2010 Free Software Foundation, Inc.
5	This file is part of GNU Make.
6
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
10	version.
11
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.
15
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/>. */
18
19	#include "make.h"
20	#include "hash.h"
21
22	#ifdef HAVE_DIRENT_H
23	# include <dirent.h>
24	# define NAMLEN(dirent) strlen((dirent)->d_name)
25	# ifdef VMS
26	/* its prototype is in vmsdir.h, which is not needed for HAVE_DIRENT_H */
27	const char vmsify (const char name, int type);
28	# endif
29	#else
30	# define dirent direct
31	# define NAMLEN(dirent) (dirent)->d_namlen
32	# ifdef HAVE_SYS_NDIR_H
33	# include <sys/ndir.h>
34	# endif
35	# ifdef HAVE_SYS_DIR_H
36	# include <sys/dir.h>
37	# endif
38	# ifdef HAVE_NDIR_H
39	# include <ndir.h>
40	# endif
41	# ifdef HAVE_VMSDIR_H
42	# include "vmsdir.h"
43	# endif /* HAVE_VMSDIR_H */
44	#endif
45	/* bird: FreeBSD + smbfs -> readdir() + EBADF */
46	#ifdef __FreeBSD__
47	# include <sys/mount.h>
48	#endif
49	/* bird: end */
50
51	#ifdef CONFIG_WITH_STRCACHE2
52	# include <stddef.h>
53	#endif
54
55	/* In GNU systems, <dirent.h> defines this macro for us. */
56	#ifdef _D_NAMLEN
57	# undef NAMLEN
58	# define NAMLEN(d) _D_NAMLEN(d)
59	#endif
60
61	#if (defined (POSIX) \|\| defined (VMS) \|\| defined (WINDOWS32)) && !defined (__GNU_LIBRARY__)
62	/* Posix does not require that the d_ino field be present, and some
63	systems do not provide it. */
64	# define REAL_DIR_ENTRY(dp) 1
65	# define FAKE_DIR_ENTRY(dp)
66	#else
67	# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
68	# define FAKE_DIR_ENTRY(dp) (dp->d_ino = 1)
69	#endif /* POSIX */
70
71
72	#ifdef __MSDOS__
73	#include <ctype.h>
74	#include <fcntl.h>
75
76	/* If it's MSDOS that doesn't have _USE_LFN, disable LFN support. */
77	#ifndef _USE_LFN
78	#define _USE_LFN 0
79	#endif
80
81	static const char *
82	dosify (const char *filename)
83	{
84	static char dos_filename[14];
85	char *df;
86	int i;
87
88	if (filename == 0 \|\| _USE_LFN)
89	return filename;
90
91	/* FIXME: what about filenames which violate
92	8+3 constraints, like "config.h.in", or ".emacs"? */
93	if (strpbrk (filename, "\"*+,;<=>?[\\]\|") != 0)
94	return filename;
95
96	df = dos_filename;
97
98	/* First, transform the name part. */
99	for (i = 0; filename != '\0' && i < 8 && filename != '.'; ++i)
100	df++ = tolower ((unsigned char)filename++);
101
102	/* Now skip to the next dot. */
103	while (filename != '\0' && filename != '.')
104	++filename;
105	if (*filename != '\0')
106	{
107	df++ = filename++;
108	for (i = 0; filename != '\0' && i < 3 && filename != '.'; ++i)
109	df++ = tolower ((unsigned char)filename++);
110	}
111
112	/* Look for more dots. */
113	while (filename != '\0' && filename != '.')
114	++filename;
115	if (*filename == '.')
116	return filename;
117	*df = 0;
118	return dos_filename;
119	}
120	#endif /* __MSDOS__ */
121
122	#ifdef WINDOWS32
123	#include <Windows.h>
124	#include "pathstuff.h"
125	#endif
126
127	#ifdef _AMIGA
128	#include <ctype.h>
129	#endif
130
131	#ifdef HAVE_CASE_INSENSITIVE_FS
132	static const char *
133	downcase (const char *filename)
134	{
135	static PATH_VAR (new_filename);
136	char *df;
137
138	if (filename == 0)
139	return 0;
140
141	df = new_filename;
142	while (*filename != '\0')
143	{
144	df++ = tolower ((unsigned char)filename);
145	++filename;
146	}
147
148	*df = 0;
149
150	return new_filename;
151	}
152	#endif /* HAVE_CASE_INSENSITIVE_FS */
153
154	#ifdef VMS
155
156	static int
157	vms_hash (const char *name)
158	{
159	int h = 0;
160	int g;
161
162	while (*name)
163	{
164	unsigned char uc = *name;
165	#ifdef HAVE_CASE_INSENSITIVE_FS
166	h = (h << 4) + (isupper (uc) ? tolower (uc) : uc);
167	#else
168	h = (h << 4) + uc;
169	#endif
170	name++;
171	g = h & 0xf0000000;
172	if (g)
173	{
174	h = h ^ (g >> 24);
175	h = h ^ g;
176	}
177	}
178	return h;
179	}
180
181	/* fake stat entry for a directory */
182	static int
183	vmsstat_dir (const char name, struct stat st)
184	{
185	char *s;
186	int h;
187	DIR *dir;
188
189	dir = opendir (name);
190	if (dir == 0)
191	return -1;
192	closedir (dir);
193	s = strchr (name, ':'); /* find device */
194	if (s)
195	{
196	/* to keep the compiler happy we said "const char name", now we cheat /
197	*s++ = 0;
198	st->st_dev = (char *)vms_hash (name);
199	h = vms_hash (s);
200	*(s-1) = ':';
201	}
202	else
203	{
204	st->st_dev = 0;
205	h = vms_hash (name);
206	}
207
208	st->st_ino[0] = h & 0xff;
209	st->st_ino[1] = h & 0xff00;
210	st->st_ino[2] = h >> 16;
211
212	return 0;
213	}
214	#endif /* VMS */
215
216
217	/* Hash table of directories. */
218
219	#ifndef DIRECTORY_BUCKETS
220	#ifdef KMK
221	# define DIRECTORY_BUCKETS 4096
222	# else
223	# define DIRECTORY_BUCKETS 199
224	# endif
225	#endif
226
227	struct directory_contents
228	{
229	dev_t dev; /* Device and inode numbers of this dir. */
230	#ifdef WINDOWS32
231	/* Inode means nothing on WINDOWS32. Even file key information is
232	* unreliable because it is random per file open and undefined for remote
233	* filesystems. The most unique attribute I can come up with is the fully
234	* qualified name of the directory. Beware though, this is also
235	* unreliable. I'm open to suggestion on a better way to emulate inode. */
236	# ifndef CONFIG_WITH_STRCACHE2
237	char *path_key;
238	# else
239	char const path_key; / strcache'ed */
240	# endif
241	int ctime;
242	int mtime; /* controls check for stale directory cache */
243	int fs_flags; /* FS_FAT, FS_NTFS, ... */
244	# define FS_FAT 0x1
245	# define FS_NTFS 0x2
246	# define FS_UNKNOWN 0x4
247	# ifdef KMK
248	time_t last_updated; /*< The last time the directory was re-read. /
249	# endif
250	#else
251	# ifdef VMS
252	ino_t ino[3];
253	# else
254	ino_t ino;
255	# endif
256	#endif /* WINDOWS32 */
257	struct hash_table dirfiles; /* Files in this directory. */
258	DIR dirstream; / Stream reading this directory. */
259	};
260
261	static unsigned long
262	directory_contents_hash_1 (const void *key_0)
263	{
264	const struct directory_contents *key = key_0;
265	unsigned long hash;
266
267	#ifdef WINDOWS32
268	# ifndef CONFIG_WITH_STRCACHE2
269	hash = 0;
270	ISTRING_HASH_1 (key->path_key, hash);
271	# else /* CONFIG_WITH_STRCACHE2 */
272	hash = strcache2_calc_ptr_hash (&file_strcache, key->path_key);
273	# endif /* CONFIG_WITH_STRCACHE2 */
274	hash ^= ((unsigned int) key->dev << 4) ^ (unsigned int) key->ctime;
275	#else
276	# ifdef VMS
277	hash = (((unsigned int) key->dev << 4)
278	^ ((unsigned int) key->ino[0]
279	+ (unsigned int) key->ino[1]
280	+ (unsigned int) key->ino[2]));
281	# else
282	hash = ((unsigned int) key->dev << 4) ^ (unsigned int) key->ino;
283	# endif
284	#endif /* WINDOWS32 */
285	return hash;
286	}
287
288	static unsigned long
289	directory_contents_hash_2 (const void *key_0)
290	{
291	const struct directory_contents *key = key_0;
292	unsigned long hash;
293
294	#ifdef WINDOWS32
295	# ifndef CONFIG_WITH_STRCACHE2
296	hash = 0;
297	ISTRING_HASH_2 (key->path_key, hash);
298	# else /* CONFIG_WITH_STRCACHE2 */
299	hash = strcache2_get_hash (&file_strcache, key->path_key);
300	# endif /* CONFIG_WITH_STRCACHE2 */
301	hash ^= ((unsigned int) key->dev << 4) ^ (unsigned int) ~key->ctime;
302	#else
303	# ifdef VMS
304	hash = (((unsigned int) key->dev << 4)
305	^ ~((unsigned int) key->ino[0]
306	+ (unsigned int) key->ino[1]
307	+ (unsigned int) key->ino[2]));
308	# else
309	hash = ((unsigned int) key->dev << 4) ^ (unsigned int) ~key->ino;
310	# endif
311	#endif /* WINDOWS32 */
312
313	return hash;
314	}
315
316	/* Sometimes it's OK to use subtraction to get this value:
317	result = X - Y;
318	But, if we're not sure of the type of X and Y they may be too large for an
319	int (on a 64-bit system for example). So, use ?: instead.
320	See Savannah bug #15534.
321
322	NOTE! This macro has side-effects!
323	*/
324
325	#define MAKECMP(_x,_y) ((_x)<(_y)?-1:((_x)==(_y)?0:1))
326
327	static int
328	directory_contents_hash_cmp (const void xv, const void yv)
329	{
330	const struct directory_contents *x = xv;
331	const struct directory_contents *y = yv;
332	int result;
333
334	#ifdef WINDOWS32
335	# ifndef CONFIG_WITH_STRCACHE2
336	ISTRING_COMPARE (x->path_key, y->path_key, result);
337	if (result)
338	return result;
339	# else /* CONFIG_WITH_STRCACHE2 */
340	if (x->path_key != y->path_key)
341	return -1;
342	# endif /* CONFIG_WITH_STRCACHE2 */
343	result = MAKECMP(x->ctime, y->ctime);
344	if (result)
345	return result;
346	#else
347	# ifdef VMS
348	result = MAKECMP(x->ino[0], y->ino[0]);
349	if (result)
350	return result;
351	result = MAKECMP(x->ino[1], y->ino[1]);
352	if (result)
353	return result;
354	result = MAKECMP(x->ino[2], y->ino[2]);
355	if (result)
356	return result;
357	# else
358	result = MAKECMP(x->ino, y->ino);
359	if (result)
360	return result;
361	# endif
362	#endif /* WINDOWS32 */
363
364	return MAKECMP(x->dev, y->dev);
365	}
366
367	/* Table of directory contents hashed by device and inode number. */
368	static struct hash_table directory_contents;
369
370	#ifdef CONFIG_WITH_ALLOC_CACHES
371	/* Allocation cache for directory contents. */
372	struct alloccache directory_contents_cache;
373	#endif
374
375	struct directory
376	{
377	const char name; / Name of the directory. */
378
379	/* The directory's contents. This data may be shared by several
380	entries in the hash table, which refer to the same directory
381	(identified uniquely by `dev' and `ino') under different names. */
382	struct directory_contents *contents;
383	};
384
385	#ifndef CONFIG_WITH_STRCACHE2
386	static unsigned long
387	directory_hash_1 (const void *key)
388	{
389	return_ISTRING_HASH_1 (((const struct directory *) key)->name);
390	}
391
392	static unsigned long
393	directory_hash_2 (const void *key)
394	{
395	return_ISTRING_HASH_2 (((const struct directory *) key)->name);
396	}
397
398	static int
399	directory_hash_cmp (const void x, const void y)
400	{
401	return_ISTRING_COMPARE (((const struct directory *) x)->name,
402	((const struct directory *) y)->name);
403	}
404	#endif /* !CONFIG_WITH_STRCACHE2 */
405
406	/* Table of directories hashed by name. */
407	static struct hash_table directories;
408
409	#ifdef CONFIG_WITH_ALLOC_CACHES
410	/* Allocation cache for directories. */
411	struct alloccache directories_cache;
412	#endif
413
414	/* Never have more than this many directories open at once. */
415
416	#define MAX_OPEN_DIRECTORIES 10
417
418	static unsigned int open_directories = 0;
419
420
421	/* Hash table of files in each directory. */
422
423	struct dirfile
424	{
425	const char name; / Name of the file. */
426	short length;
427	short impossible; /* This file is impossible. */
428	};
429
430	#ifndef CONFIG_WITH_STRCACHE2
431	static unsigned long
432	dirfile_hash_1 (const void *key)
433	{
434	return_ISTRING_HASH_1 (((struct dirfile const *) key)->name);
435	}
436
437	static unsigned long
438	dirfile_hash_2 (const void *key)
439	{
440	return_ISTRING_HASH_2 (((struct dirfile const *) key)->name);
441	}
442
443	static int
444	dirfile_hash_cmp (const void xv, const void yv)
445	{
446	const struct dirfile *x = xv;
447	const struct dirfile *y = yv;
448	int result = x->length - y->length;
449	if (result)
450	return result;
451	return_ISTRING_COMPARE (x->name, y->name);
452	}
453	#endif /* !CONFIG_WITH_STRCACHE2 */
454
455	#ifndef DIRFILE_BUCKETS
456	#define DIRFILE_BUCKETS 107
457	#endif
458
459	#ifdef CONFIG_WITH_ALLOC_CACHES
460	/* Allocation cache for dirfiles. */
461	struct alloccache dirfile_cache;
462	#endif
463
464
465
466	static int dir_contents_file_exists_p (struct directory_contents *dir,
467	const char *filename);
468	static struct directory find_directory (const char name);
469
470	/* Find the directory named NAME and return its `struct directory'. */
471
472	static struct directory *
473	find_directory (const char *name)
474	{
475	const char *p;
476	struct directory *dir;
477	struct directory **dir_slot;
478	struct directory dir_key;
479	int r;
480	#ifdef WINDOWS32
481	char* w32_path;
482	char fs_label[BUFSIZ];
483	char fs_type[BUFSIZ];
484	unsigned long fs_serno;
485	unsigned long fs_flags;
486	unsigned long fs_len;
487	#endif
488	#ifdef VMS
489	if ((name == '.') && ((name+1) == 0))
490	name = "[]";
491	else
492	name = vmsify (name,1);
493	#endif
494
495	#ifndef CONFIG_WITH_STRCACHE2
496	dir_key.name = name;
497	dir_slot = (struct directory **) hash_find_slot (&directories, &dir_key);
498	#else
499	p = name + strlen (name);
500	# if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
501	dir_key.name = strcache_add_len (downcase(name), p - name);
502	# else
503	dir_key.name = strcache_add_len (name, p - name);
504	# endif
505	dir_slot = (struct directory **) hash_find_slot_strcached (&directories, &dir_key);
506	#endif
507	dir = *dir_slot;
508
509	if (HASH_VACANT (dir))
510	{
511	struct stat st;
512
513	/* The directory was not found. Create a new entry for it. */
514
515	#ifndef CONFIG_WITH_STRCACHE2
516	p = name + strlen (name);
517	#endif
518	#ifndef CONFIG_WITH_ALLOC_CACHES
519	dir = xmalloc (sizeof (struct directory));
520	#else
521	dir = alloccache_alloc (&directories_cache);
522	#endif
523	#ifndef CONFIG_WITH_STRCACHE2
524	#if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
525	dir->name = strcache_add_len (downcase(name), p - name);
526	#else
527	dir->name = strcache_add_len (name, p - name);
528	#endif
529	#else /* CONFIG_WITH_STRCACHE2 */
530	dir->name = dir_key.name;
531	#endif /* CONFIG_WITH_STRCACHE2 */
532	hash_insert_at (&directories, dir, dir_slot);
533	/* The directory is not in the name hash table.
534	Find its device and inode numbers, and look it up by them. */
535
536	#ifdef VMS
537	r = vmsstat_dir (name, &st);
538	#elif defined(WINDOWS32)
539	{
540	char tem[MAXPATHLEN], tstart, tend;
541
542	/* Remove any trailing slashes. Windows32 stat fails even on
543	valid directories if they end in a slash. */
544	memcpy (tem, name, p - name + 1);
545	tstart = tem;
546	if (tstart[1] == ':')
547	tstart += 2;
548	for (tend = tem + (p - name - 1);
549	tend > tstart && (tend == '/' \|\| tend == '\\');
550	tend--)
551	*tend = '\0';
552
553	r = stat (tem, &st);
554	}
555	#else
556	EINTRLOOP (r, stat (name, &st));
557	#endif
558
559	if (r < 0)
560	{
561	/* Couldn't stat the directory. Mark this by
562	setting the `contents' member to a nil pointer. */
563	dir->contents = 0;
564	}
565	else
566	{
567	/* Search the contents hash table; device and inode are the key. */
568
569	struct directory_contents *dc;
570	struct directory_contents **dc_slot;
571	struct directory_contents dc_key;
572
573	dc_key.dev = st.st_dev;
574	#ifdef WINDOWS32
575	# ifndef CONFIG_WITH_STRCACHE2
576	dc_key.path_key = w32_path = w32ify (name, 1);
577	# else /* CONFIG_WITH_STRCACHE2 */
578	w32_path = w32ify (name, 1);
579	dc_key.path_key = strcache_add (w32_path);
580	# endif /* CONFIG_WITH_STRCACHE2 */
581	dc_key.ctime = st.st_ctime;
582	#else
583	# ifdef VMS
584	dc_key.ino[0] = st.st_ino[0];
585	dc_key.ino[1] = st.st_ino[1];
586	dc_key.ino[2] = st.st_ino[2];
587	# else
588	dc_key.ino = st.st_ino;
589	# endif
590	#endif
591	dc_slot = (struct directory_contents **) hash_find_slot (&directory_contents, &dc_key);
592	dc = *dc_slot;
593
594	if (HASH_VACANT (dc))
595	{
596	/* Nope; this really is a directory we haven't seen before. */
597
598	#ifndef CONFIG_WITH_ALLOC_CACHES
599	dc = (struct directory_contents *)
600	xmalloc (sizeof (struct directory_contents));
601	#else
602	dc = (struct directory_contents *)
603	alloccache_alloc (&directory_contents_cache);
604	#endif
605
606	/* Enter it in the contents hash table. */
607	dc->dev = st.st_dev;
608	#ifdef WINDOWS32
609	# ifndef CONFIG_WITH_STRCACHE2
610	dc->path_key = xstrdup (w32_path);
611	# else /* CONFIG_WITH_STRCACHE2 */
612	dc->path_key = dc_key.path_key;
613	# endif /* CONFIG_WITH_STRCACHE2 */
614
615	dc->ctime = st.st_ctime;
616	dc->mtime = st.st_mtime;
617	# ifdef KMK
618	dc->last_updated = time(NULL);
619	# endif
620
621	/*
622	* NTFS is the only WINDOWS32 filesystem that bumps mtime
623	* on a directory when files are added/deleted from
624	* a directory.
625	*/
626	w32_path[3] = '\0';
627	if (GetVolumeInformation(w32_path,
628	fs_label, sizeof (fs_label),
629	&fs_serno, &fs_len,
630	&fs_flags, fs_type, sizeof (fs_type)) == FALSE)
631	dc->fs_flags = FS_UNKNOWN;
632	else if (!strcmp(fs_type, "FAT"))
633	dc->fs_flags = FS_FAT;
634	else if (!strcmp(fs_type, "NTFS"))
635	dc->fs_flags = FS_NTFS;
636	else
637	dc->fs_flags = FS_UNKNOWN;
638	#else
639	# ifdef VMS
640	dc->ino[0] = st.st_ino[0];
641	dc->ino[1] = st.st_ino[1];
642	dc->ino[2] = st.st_ino[2];
643	# else
644	dc->ino = st.st_ino;
645	# endif
646	#endif /* WINDOWS32 */
647	hash_insert_at (&directory_contents, dc, dc_slot);
648	ENULLLOOP (dc->dirstream, opendir (name));
649	if (dc->dirstream == 0)
650	/* Couldn't open the directory. Mark this by setting the
651	`files' member to a nil pointer. */
652	dc->dirfiles.ht_vec = 0;
653	else
654	{
655	#ifdef KMK
656	int buckets = st.st_nlink * 2;
657	if (buckets < DIRFILE_BUCKETS)
658	buckets = DIRFILE_BUCKETS;
659	hash_init_strcached (&dc->dirfiles, buckets, &file_strcache,
660	offsetof (struct dirfile, name));
661	#else
662	# ifndef CONFIG_WITH_STRCACHE2
663	hash_init (&dc->dirfiles, DIRFILE_BUCKETS,
664	dirfile_hash_1, dirfile_hash_2, dirfile_hash_cmp);
665	# else /* CONFIG_WITH_STRCACHE2 */
666	hash_init_strcached (&dc->dirfiles, DIRFILE_BUCKETS,
667	&file_strcache,
668	offsetof (struct dirfile, name));
669	# endif /* CONFIG_WITH_STRCACHE2 */
670	#endif
671	/* Keep track of how many directories are open. */
672	++open_directories;
673	if (open_directories == MAX_OPEN_DIRECTORIES)
674	/* We have too many directories open already.
675	Read the entire directory and then close it. */
676	dir_contents_file_exists_p (dc, 0);
677	}
678	}
679
680	/* Point the name-hashed entry for DIR at its contents data. */
681	dir->contents = dc;
682	}
683	}
684
685	return dir;
686	}
687
688
689	/* Return 1 if the name FILENAME is entered in DIR's hash table.
690	FILENAME must contain no slashes. */
691
692	static int
693	dir_contents_file_exists_p (struct directory_contents *dir,
694	const char *filename)
695	{
696	unsigned int hash;
697	struct dirfile *df;
698	struct dirent *d;
699	#ifdef WINDOWS32
700	# ifndef KMK
701	struct stat st;
702	# endif
703	int rehash = 0;
704	#endif
705	#ifdef KMK
706	int ret = 0;
707	#endif
708
709	if (dir == 0 \|\| dir->dirfiles.ht_vec == 0)
710	/* The directory could not be stat'd or opened. */
711	return 0;
712
713	#ifdef __MSDOS__
714	filename = dosify (filename);
715	#endif
716
717	#ifdef HAVE_CASE_INSENSITIVE_FS
718	filename = downcase (filename);
719	#endif
720
721	#ifdef __EMX__
722	if (filename != 0)
723	_fnlwr (filename); /* lower case for FAT drives */
724	#endif
725
726	#ifdef VMS
727	filename = vmsify (filename,0);
728	#endif
729
730	hash = 0;
731	if (filename != 0)
732	{
733	struct dirfile dirfile_key;
734
735	if (*filename == '\0')
736	{
737	/* Checking if the directory exists. */
738	return 1;
739	}
740	#ifndef CONFIG_WITH_STRCACHE2
741	dirfile_key.name = filename;
742	dirfile_key.length = strlen (filename);
743	df = hash_find_item (&dir->dirfiles, &dirfile_key);
744	#else /* CONFIG_WITH_STRCACHE2 */
745	dirfile_key.length = strlen (filename);
746	dirfile_key.name = filename
747	= strcache_add_len (filename, dirfile_key.length);
748	df = hash_find_item_strcached (&dir->dirfiles, &dirfile_key);
749	#endif /* CONFIG_WITH_STRCACHE2 */
750	if (df)
751	return !df->impossible;
752	}
753
754	/* The file was not found in the hashed list.
755	Try to read the directory further. */
756
757	if (dir->dirstream == 0)
758	{
759	#if defined(WINDOWS32) && !defined(KMK)
760	/*
761	* Check to see if directory has changed since last read. FAT
762	* filesystems force a rehash always as mtime does not change
763	* on directories (ugh!).
764	*/
765	# ifdef KMK
766	if (dir->path_key && time(NULL) > dc->last_updated + 2) /* KMK: Only recheck every 2 seconds. */
767	# else
768	if (dir->path_key)
769	# endif
770	{
771	if ((dir->fs_flags & FS_FAT) != 0)
772	{
773	dir->mtime = time ((time_t *) 0);
774	rehash = 1;
775	}
776	# ifdef KMK
777	else if ( birdStatModTimeOnly (dir->path_key, &st.st_mtim, 1) == 0
778	&& st.st_mtime > dir->mtime)
779	# else
780	else if (stat (dir->path_key, &st) == 0 && st.st_mtime > dir->mtime)
781	# endif
782	{
783	/* reset date stamp to show most recent re-process. */
784	dir->mtime = st.st_mtime;
785	rehash = 1;
786	}
787
788
789	/* If it has been already read in, all done. */
790	if (!rehash)
791	return 0;
792
793	/* make sure directory can still be opened; if not return. */
794	dir->dirstream = opendir (dir->path_key);
795	if (!dir->dirstream)
796	return 0;
797	# ifdef KMK
798	dc->last_updated = time(NULL);
799	# endif
800	}
801	else
802	#endif
803	/* The directory has been all read in. */
804	return 0;
805	}
806
807	while (1)
808	{
809	/* Enter the file in the hash table. */
810	unsigned int len;
811	struct dirfile dirfile_key;
812	struct dirfile **dirfile_slot;
813
814	ENULLLOOP (d, readdir (dir->dirstream));
815	if (d == 0)
816	{
817	/* bird: Workaround for smbfs mounts returning EBADF at the end of the search.
818	To exactly determin the cause here, I should probably do some smbfs
819	tracing, but for now just ignoring the EBADF on seems to work.
820	(The smb server is 64-bit vista, btw.) */
821	#if defined (__FreeBSD__)
822	struct statfs stfs;
823	int saved_errno = errno;
824	errno = 0;
825	if (saved_errno == EBADF
826	&& !fstatfs (dirfd (dir->dirstream), &stfs)
827	&& !(stfs.f_flags & MNT_LOCAL)
828	&& !strcmp(stfs.f_fstypename, "smbfs"))
829	{
830	/*fprintf (stderr, "EBADF on remote fs! dirfd=%d errno=%d\n",
831	dirfd (dir->dirstream), errno);*/
832	saved_errno = 0;
833	}
834	errno = saved_errno;
835	#endif
836	/* bird: end */
837	if (errno)
838	fatal (NILF, "INTERNAL: readdir(%p): %s (filename=%s)\n", (void *)dir, strerror (errno), filename);
839	break;
840	}
841
842	#if defined(VMS) && defined(HAVE_DIRENT_H)
843	/* In VMS we get file versions too, which have to be stripped off */
844	{
845	char *p = strrchr (d->d_name, ';');
846	if (p)
847	*p = '\0';
848	}
849	#endif
850	if (!REAL_DIR_ENTRY (d))
851	continue;
852
853	len = NAMLEN (d);
854	#ifndef CONFIG_WITH_STRCACHE2
855	dirfile_key.name = d->d_name;
856	dirfile_key.length = len;
857	dirfile_slot = (struct dirfile **) hash_find_slot (&dir->dirfiles, &dirfile_key);
858	#else
859	# if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
860	dirfile_key.name = strcache_add_len (downcase(d->d_name), len);
861	# else
862	dirfile_key.name = strcache_add_len (d->d_name, len);
863	# endif
864	dirfile_key.length = len;
865	dirfile_slot = (struct dirfile **) hash_find_slot_strcached (&dir->dirfiles, &dirfile_key);
866	#endif
867	#ifdef WINDOWS32
868	/*
869	* If re-reading a directory, don't cache files that have
870	* already been discovered.
871	*/
872	if (! rehash \|\| HASH_VACANT (*dirfile_slot))
873	#endif
874	{
875	#ifndef CONFIG_WITH_ALLOC_CACHES
876	df = xmalloc (sizeof (struct dirfile));
877	#else
878	df = alloccache_alloc (&dirfile_cache);
879	#endif
880	#ifndef CONFIG_WITH_STRCACHE2
881	#if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
882	df->name = strcache_add_len (downcase(d->d_name), len);
883	#else
884	df->name = strcache_add_len (d->d_name, len);
885	#endif
886	#else /* CONFIG_WITH_STRCACHE2 */
887	df->name = dirfile_key.name;
888	#endif /* CONFIG_WITH_STRCACHE2 */
889	df->length = len;
890	df->impossible = 0;
891	hash_insert_at (&dir->dirfiles, df, dirfile_slot);
892	}
893	/* Check if the name matches the one we're searching for. */
894	#ifndef CONFIG_WITH_STRCACHE2
895	if (filename != 0 && patheq (d->d_name, filename))
896	#else
897	if (filename != 0 && dirfile_key.name == filename)
898	#endif
899	#ifdef KMK
900	ret = 1; /* Cache the whole dir. Prevents trouble on windows and os2 during 'rebuild'. */
901	#else
902	return 1;
903	#endif
904	}
905
906	/* If the directory has been completely read in,
907	close the stream and reset the pointer to nil. */
908	if (d == 0)
909	{
910	--open_directories;
911	closedir (dir->dirstream);
912	dir->dirstream = 0;
913	}
914	#ifdef KMK
915	return ret;
916	#else
917	return 0;
918	#endif
919	}
920
921	/* Return 1 if the name FILENAME in directory DIRNAME
922	is entered in the dir hash table.
923	FILENAME must contain no slashes. */
924
925	int
926	dir_file_exists_p (const char dirname, const char filename)
927	{
928	return dir_contents_file_exists_p (find_directory (dirname)->contents,
929	filename);
930	}
931
932
933	/* Return 1 if the file named NAME exists. */
934
935	int
936	file_exists_p (const char *name)
937	{
938	const char *dirend;
939	const char *dirname;
940	const char *slash;
941
942	#ifndef NO_ARCHIVES
943	if (ar_name (name))
944	return ar_member_date (name) != (time_t) -1;
945	#endif
946
947	#ifdef VMS
948	dirend = strrchr (name, ']');
949	if (dirend == 0)
950	dirend = strrchr (name, ':');
951	if (dirend == 0)
952	return dir_file_exists_p ("[]", name);
953	#else /* !VMS */
954	dirend = strrchr (name, '/');
955	#ifdef HAVE_DOS_PATHS
956	/* Forward and backslashes might be mixed. We need the rightmost one. */
957	{
958	const char *bslash = strrchr(name, '\\');
959	if (!dirend \|\| bslash > dirend)
960	dirend = bslash;
961	/* The case of "d:file". */
962	if (!dirend && name[0] && name[1] == ':')
963	dirend = name + 1;
964	}
965	#endif /* HAVE_DOS_PATHS */
966	if (dirend == 0)
967	#ifndef _AMIGA
968	return dir_file_exists_p (".", name);
969	#else /* !VMS && !AMIGA */
970	return dir_file_exists_p ("", name);
971	#endif /* AMIGA */
972	#endif /* VMS */
973
974	slash = dirend;
975	if (dirend == name)
976	dirname = "/";
977	else
978	{
979	char *p;
980	#ifdef HAVE_DOS_PATHS
981	/* d:/ and d: are very different... */
982	if (dirend < name + 3 && name[1] == ':' &&
983	(dirend == '/' \|\| dirend == '\\' \|\| *dirend == ':'))
984	dirend++;
985	#endif
986	p = alloca (dirend - name + 1);
987	memcpy (p, name, dirend - name);
988	p[dirend - name] = '\0';
989	dirname = p;
990	}
991	return dir_file_exists_p (dirname, slash + 1);
992	}
993
994
995	/* Mark FILENAME as `impossible' for `file_impossible_p'.
996	This means an attempt has been made to search for FILENAME
997	as an intermediate file, and it has failed. */
998
999	void
1000	file_impossible (const char *filename)
1001	{
1002	const char *dirend;
1003	const char *p = filename;
1004	struct directory *dir;
1005	struct dirfile *new;
1006
1007	#ifdef VMS
1008	dirend = strrchr (p, ']');
1009	if (dirend == 0)
1010	dirend = strrchr (p, ':');
1011	dirend++;
1012	if (dirend == (char *)1)
1013	dir = find_directory ("[]");
1014	#else
1015	dirend = strrchr (p, '/');
1016	# ifdef HAVE_DOS_PATHS
1017	/* Forward and backslashes might be mixed. We need the rightmost one. */
1018	{
1019	const char *bslash = strrchr(p, '\\');
1020	if (!dirend \|\| bslash > dirend)
1021	dirend = bslash;
1022	/* The case of "d:file". */
1023	if (!dirend && p[0] && p[1] == ':')
1024	dirend = p + 1;
1025	}
1026	# endif /* HAVE_DOS_PATHS */
1027	if (dirend == 0)
1028	# ifdef _AMIGA
1029	dir = find_directory ("");
1030	# else /* !VMS && !AMIGA */
1031	dir = find_directory (".");
1032	# endif /* AMIGA */
1033	#endif /* VMS */
1034	else
1035	{
1036	const char *dirname;
1037	const char *slash = dirend;
1038	if (dirend == p)
1039	dirname = "/";
1040	else
1041	{
1042	char *cp;
1043	#ifdef HAVE_DOS_PATHS
1044	/* d:/ and d: are very different... */
1045	if (dirend < p + 3 && p[1] == ':' &&
1046	(dirend == '/' \|\| dirend == '\\' \|\| *dirend == ':'))
1047	dirend++;
1048	#endif
1049	cp = alloca (dirend - p + 1);
1050	memcpy (cp, p, dirend - p);
1051	cp[dirend - p] = '\0';
1052	dirname = cp;
1053	}
1054	dir = find_directory (dirname);
1055	filename = p = slash + 1;
1056	}
1057
1058	if (dir->contents == 0)
1059	/* The directory could not be stat'd. We allocate a contents
1060	structure for it, but leave it out of the contents hash table. */
1061	#ifndef CONFIG_WITH_ALLOC_CACHES
1062	dir->contents = xcalloc (sizeof (struct directory_contents));
1063	#else
1064	dir->contents = alloccache_calloc (&directory_contents_cache);
1065	#endif
1066
1067	if (dir->contents->dirfiles.ht_vec == 0)
1068	{
1069	#ifndef CONFIG_WITH_STRCACHE2
1070	hash_init (&dir->contents->dirfiles, DIRFILE_BUCKETS,
1071	dirfile_hash_1, dirfile_hash_2, dirfile_hash_cmp);
1072	#else /* CONFIG_WITH_STRCACHE2 */
1073	hash_init_strcached (&dir->contents->dirfiles, DIRFILE_BUCKETS,
1074	&file_strcache, offsetof (struct dirfile, name));
1075	#endif /* CONFIG_WITH_STRCACHE2 */
1076	}
1077
1078	/* Make a new entry and put it in the table. */
1079
1080	#ifndef CONFIG_WITH_ALLOC_CACHES
1081	new = xmalloc (sizeof (struct dirfile));
1082	#else
1083	new = alloccache_alloc (&dirfile_cache);
1084	#endif
1085	new->length = strlen (filename);
1086	#if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
1087	new->name = strcache_add_len (downcase(filename), new->length);
1088	#else
1089	new->name = strcache_add_len (filename, new->length);
1090	#endif
1091	new->impossible = 1;
1092	#ifndef CONFIG_WITH_STRCACHE2
1093	hash_insert (&dir->contents->dirfiles, new);
1094	#else /* CONFIG_WITH_STRCACHE2 */
1095	hash_insert_strcached (&dir->contents->dirfiles, new);
1096	#endif /* CONFIG_WITH_STRCACHE2 */
1097	}
1098
1099
1100	/* Return nonzero if FILENAME has been marked impossible. */
1101
1102	int
1103	file_impossible_p (const char *filename)
1104	{
1105	const char *dirend;
1106	const char *p = filename;
1107	struct directory_contents *dir;
1108	struct dirfile *dirfile;
1109	struct dirfile dirfile_key;
1110
1111	#ifdef VMS
1112	dirend = strrchr (filename, ']');
1113	if (dirend == 0)
1114	dir = find_directory ("[]")->contents;
1115	#else
1116	dirend = strrchr (filename, '/');
1117	#ifdef HAVE_DOS_PATHS
1118	/* Forward and backslashes might be mixed. We need the rightmost one. */
1119	{
1120	const char *bslash = strrchr(filename, '\\');
1121	if (!dirend \|\| bslash > dirend)
1122	dirend = bslash;
1123	/* The case of "d:file". */
1124	if (!dirend && filename[0] && filename[1] == ':')
1125	dirend = filename + 1;
1126	}
1127	#endif /* HAVE_DOS_PATHS */
1128	if (dirend == 0)
1129	#ifdef _AMIGA
1130	dir = find_directory ("")->contents;
1131	#else /* !VMS && !AMIGA */
1132	dir = find_directory (".")->contents;
1133	#endif /* AMIGA */
1134	#endif /* VMS */
1135	else
1136	{
1137	const char *dirname;
1138	const char *slash = dirend;
1139	if (dirend == filename)
1140	dirname = "/";
1141	else
1142	{
1143	char *cp;
1144	#ifdef HAVE_DOS_PATHS
1145	/* d:/ and d: are very different... */
1146	if (dirend < filename + 3 && filename[1] == ':' &&
1147	(dirend == '/' \|\| dirend == '\\' \|\| *dirend == ':'))
1148	dirend++;
1149	#endif
1150	cp = alloca (dirend - filename + 1);
1151	memcpy (cp, p, dirend - p);
1152	cp[dirend - p] = '\0';
1153	dirname = cp;
1154	}
1155	dir = find_directory (dirname)->contents;
1156	p = filename = slash + 1;
1157	}
1158
1159	if (dir == 0 \|\| dir->dirfiles.ht_vec == 0)
1160	/* There are no files entered for this directory. */
1161	return 0;
1162
1163	#ifdef __MSDOS__
1164	filename = dosify (p);
1165	#endif
1166	#ifdef HAVE_CASE_INSENSITIVE_FS
1167	filename = downcase (p);
1168	#endif
1169	#ifdef VMS
1170	filename = vmsify (p, 1);
1171	#endif
1172
1173	#ifndef CONFIG_WITH_STRCACHE2
1174	dirfile_key.name = filename;
1175	dirfile_key.length = strlen (filename);
1176	dirfile = hash_find_item (&dir->dirfiles, &dirfile_key);
1177	#else
1178	dirfile_key.length = strlen (filename);
1179	dirfile_key.name = strcache_add_len (filename, dirfile_key.length);
1180	dirfile = hash_find_item_strcached (&dir->dirfiles, &dirfile_key);
1181	#endif
1182	if (dirfile)
1183	return dirfile->impossible;
1184
1185	return 0;
1186	}
1187
1188
1189	/* Return the already allocated name in the
1190	directory hash table that matches DIR. */
1191
1192	const char *
1193	dir_name (const char *dir)
1194	{
1195	return find_directory (dir)->name;
1196	}
1197
1198
1199	/* Print the data base of directories. */
1200
1201	void
1202	print_dir_data_base (void)
1203	{
1204	unsigned int files;
1205	unsigned int impossible;
1206	struct directory **dir_slot;
1207	struct directory **dir_end;
1208
1209	puts (_("\n# Directories\n"));
1210
1211	files = impossible = 0;
1212
1213	dir_slot = (struct directory **) directories.ht_vec;
1214	dir_end = dir_slot + directories.ht_size;
1215	for ( ; dir_slot < dir_end; dir_slot++)
1216	{
1217	struct directory dir = dir_slot;
1218	if (! HASH_VACANT (dir))
1219	{
1220	if (dir->contents == 0)
1221	printf (_("# %s: could not be stat'd.\n"), dir->name);
1222	else if (dir->contents->dirfiles.ht_vec == 0)
1223	{
1224	#ifdef WINDOWS32
1225	printf (_("# %s (key %s, mtime %d): could not be opened.\n"),
1226	dir->name, dir->contents->path_key,dir->contents->mtime);
1227	#else /* WINDOWS32 */
1228	#ifdef VMS
1229	printf (_("# %s (device %d, inode [%d,%d,%d]): could not be opened.\n"),
1230	dir->name, dir->contents->dev,
1231	dir->contents->ino[0], dir->contents->ino[1],
1232	dir->contents->ino[2]);
1233	#else
1234	printf (_("# %s (device %ld, inode %ld): could not be opened.\n"),
1235	dir->name, (long int) dir->contents->dev,
1236	(long int) dir->contents->ino);
1237	#endif
1238	#endif /* WINDOWS32 */
1239	}
1240	else
1241	{
1242	unsigned int f = 0;
1243	unsigned int im = 0;
1244	struct dirfile **files_slot;
1245	struct dirfile **files_end;
1246
1247	files_slot = (struct dirfile **) dir->contents->dirfiles.ht_vec;
1248	files_end = files_slot + dir->contents->dirfiles.ht_size;
1249	for ( ; files_slot < files_end; files_slot++)
1250	{
1251	struct dirfile df = files_slot;
1252	if (! HASH_VACANT (df))
1253	{
1254	if (df->impossible)
1255	++im;
1256	else
1257	++f;
1258	}
1259	}
1260	#ifdef WINDOWS32
1261	printf (_("# %s (key %s, mtime %d): "),
1262	dir->name, dir->contents->path_key, dir->contents->mtime);
1263	#else /* WINDOWS32 */
1264	#ifdef VMS
1265	printf (_("# %s (device %d, inode [%d,%d,%d]): "),
1266	dir->name, dir->contents->dev,
1267	dir->contents->ino[0], dir->contents->ino[1],
1268	dir->contents->ino[2]);
1269	#else
1270	printf (_("# %s (device %ld, inode %ld): "),
1271	dir->name,
1272	(long)dir->contents->dev, (long)dir->contents->ino);
1273	#endif
1274	#endif /* WINDOWS32 */
1275	if (f == 0)
1276	fputs (_("No"), stdout);
1277	else
1278	printf ("%u", f);
1279	fputs (_(" files, "), stdout);
1280	if (im == 0)
1281	fputs (_("no"), stdout);
1282	else
1283	printf ("%u", im);
1284	fputs (_(" impossibilities"), stdout);
1285	if (dir->contents->dirstream == 0)
1286	puts (".");
1287	else
1288	puts (_(" so far."));
1289	files += f;
1290	impossible += im;
1291	#ifdef KMK
1292	fputs ("# ", stdout);
1293	hash_print_stats (&dir->contents->dirfiles, stdout);
1294	fputs ("\n", stdout);
1295	#endif
1296	}
1297	}
1298	}
1299
1300	fputs ("\n# ", stdout);
1301	if (files == 0)
1302	fputs (_("No"), stdout);
1303	else
1304	printf ("%u", files);
1305	fputs (_(" files, "), stdout);
1306	if (impossible == 0)
1307	fputs (_("no"), stdout);
1308	else
1309	printf ("%u", impossible);
1310	printf (_(" impossibilities in %lu directories.\n"), directories.ht_fill);
1311	#ifdef KMK
1312	fputs ("# directories: ", stdout);
1313	hash_print_stats (&directories, stdout);
1314	fputs ("\n# directory_contents: ", stdout);
1315	hash_print_stats (&directory_contents, stdout);
1316	fputs ("\n", stdout);
1317	#endif
1318	}
1319
1320
1321	/* Hooks for globbing. */
1322
1323	#include <glob.h>
1324
1325	/* Structure describing state of iterating through a directory hash table. */
1326
1327	struct dirstream
1328	{
1329	struct directory_contents contents; / The directory being read. */
1330	struct dirfile *dirfile_slot; / Current slot in table. */
1331	};
1332
1333	/* Forward declarations. */
1334	static __ptr_t open_dirstream (const char *);
1335	static struct dirent *read_dirstream (__ptr_t);
1336
1337	static __ptr_t
1338	open_dirstream (const char *directory)
1339	{
1340	struct dirstream *new;
1341	struct directory *dir = find_directory (directory);
1342
1343	if (dir->contents == 0 \|\| dir->contents->dirfiles.ht_vec == 0)
1344	/* DIR->contents is nil if the directory could not be stat'd.
1345	DIR->contents->dirfiles is nil if it could not be opened. */
1346	return 0;
1347
1348	/* Read all the contents of the directory now. There is no benefit
1349	in being lazy, since glob will want to see every file anyway. */
1350
1351	dir_contents_file_exists_p (dir->contents, 0);
1352
1353	new = xmalloc (sizeof (struct dirstream));
1354	new->contents = dir->contents;
1355	new->dirfile_slot = (struct dirfile **) new->contents->dirfiles.ht_vec;
1356
1357	return (__ptr_t) new;
1358	}
1359
1360	static struct dirent *
1361	read_dirstream (__ptr_t stream)
1362	{
1363	static char *buf;
1364	static unsigned int bufsz;
1365
1366	struct dirstream const ds = (struct dirstream ) stream;
1367	struct directory_contents *dc = ds->contents;
1368	struct dirfile dirfile_end = (struct dirfile ) dc->dirfiles.ht_vec + dc->dirfiles.ht_size;
1369
1370	while (ds->dirfile_slot < dirfile_end)
1371	{
1372	struct dirfile df = ds->dirfile_slot++;
1373	if (! HASH_VACANT (df) && !df->impossible)
1374	{
1375	/* The glob interface wants a `struct dirent', so mock one up. */
1376	struct dirent *d;
1377	unsigned int len = df->length + 1;
1378	unsigned int sz = sizeof (*d) - sizeof (d->d_name) + len;
1379	if (sz > bufsz)
1380	{
1381	bufsz *= 2;
1382	if (sz > bufsz)
1383	bufsz = sz;
1384	buf = xrealloc (buf, bufsz);
1385	}
1386	d = (struct dirent *) buf;
1387	#ifdef __MINGW32__
1388	# if __MINGW32_MAJOR_VERSION < 3 \|\| (__MINGW32_MAJOR_VERSION == 3 && \
1389	__MINGW32_MINOR_VERSION == 0)
1390	d->d_name = xmalloc(len);
1391	# endif
1392	#endif
1393	FAKE_DIR_ENTRY (d);
1394	#ifdef _DIRENT_HAVE_D_NAMLEN
1395	d->d_namlen = len - 1;
1396	#endif
1397	#ifdef _DIRENT_HAVE_D_TYPE
1398	d->d_type = DT_UNKNOWN;
1399	#endif
1400	memcpy (d->d_name, df->name, len);
1401	return d;
1402	}
1403	}
1404
1405	return 0;
1406	}
1407
1408	static void
1409	ansi_free (void *p)
1410	{
1411	if (p)
1412	free(p);
1413	}
1414
1415	/* On 64 bit ReliantUNIX (5.44 and above) in LFS mode, stat() is actually a
1416	* macro for stat64(). If stat is a macro, make a local wrapper function to
1417	* invoke it.
1418	*/
1419	#ifndef stat
1420	# ifndef VMS
1421	int stat (const char path, struct stat sbuf);
1422	# endif
1423	# define local_stat stat
1424	#else
1425	static int
1426	local_stat (const char path, struct stat buf)
1427	{
1428	int e;
1429
1430	EINTRLOOP (e, stat (path, buf));
1431	return e;
1432	}
1433	#endif
1434
1435	#ifdef KMK
1436	static int dir_exists_p (const char *dirname)
1437	{
1438	if (file_exists_p (dirname))
1439	{
1440	struct directory *dir = find_directory (dirname);
1441	if (dir != NULL && dir->contents && dir->contents->dirfiles.ht_vec != NULL)
1442	return 1;
1443	}
1444	return 0;
1445	}
1446	#endif
1447
1448	void
1449	dir_setup_glob (glob_t *gl)
1450	{
1451	gl->gl_opendir = open_dirstream;
1452	gl->gl_readdir = read_dirstream;
1453	gl->gl_closedir = ansi_free;
1454	gl->gl_stat = local_stat;
1455	#ifdef __EMX__ /* The FreeBSD implementation actually uses gl_lstat!! */
1456	gl->gl_lstat = local_stat;
1457	#endif
1458	#if defined(KMK) && !defined(__OS2__)
1459	gl->gl_exists = file_exists_p;
1460	gl->gl_isdir = dir_exists_p;
1461	#endif
1462	/* We don't bother setting gl_lstat, since glob never calls it.
1463	The slot is only there for compatibility with 4.4 BSD. */
1464	}
1465
1466	void
1467	hash_init_directories (void)
1468	{
1469	#ifndef CONFIG_WITH_STRCACHE2
1470	hash_init (&directories, DIRECTORY_BUCKETS,
1471	directory_hash_1, directory_hash_2, directory_hash_cmp);
1472	#else /* CONFIG_WITH_STRCACHE2 */
1473	hash_init_strcached (&directories, DIRECTORY_BUCKETS, &file_strcache,
1474	offsetof (struct directory, name));
1475	#endif /* CONFIG_WITH_STRCACHE2 */
1476	hash_init (&directory_contents, DIRECTORY_BUCKETS,
1477	directory_contents_hash_1, directory_contents_hash_2,
1478	directory_contents_hash_cmp);
1479	#ifdef CONFIG_WITH_ALLOC_CACHES
1480	alloccache_init (&directories_cache, sizeof (struct directory),
1481	"directories", NULL, NULL);
1482	alloccache_init (&directory_contents_cache, sizeof (struct directory_contents),
1483	"directory_contents", NULL, NULL);
1484	alloccache_init (&dirfile_cache, sizeof (struct dirfile),
1485	"dirfile", NULL, NULL);
1486	#endif /* CONFIG_WITH_ALLOC_CACHES */
1487	}
1488

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source: kBuild/trunk/src/kmk/dir.c@ 2754

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