dir.c@ 2702

Last change on this file since 2702 was 2702, checked in by bird, 12 years ago
kmk/WindowsNT: Avoiding unnecessary stat() calls. Reimplemented stat(), lstat(), fstat(), opendir(), readdir(), and closedir() using native NT APIs.
Property svn:eol-style set to `native`
File size: 37.9 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
706	if (dir == 0 \|\| dir->dirfiles.ht_vec == 0)
707	/* The directory could not be stat'd or opened. */
708	return 0;
709
710	#ifdef __MSDOS__
711	filename = dosify (filename);
712	#endif
713
714	#ifdef HAVE_CASE_INSENSITIVE_FS
715	filename = downcase (filename);
716	#endif
717
718	#ifdef __EMX__
719	if (filename != 0)
720	_fnlwr (filename); /* lower case for FAT drives */
721	#endif
722
723	#ifdef VMS
724	filename = vmsify (filename,0);
725	#endif
726
727	hash = 0;
728	if (filename != 0)
729	{
730	struct dirfile dirfile_key;
731
732	if (*filename == '\0')
733	{
734	/* Checking if the directory exists. */
735	return 1;
736	}
737	#ifndef CONFIG_WITH_STRCACHE2
738	dirfile_key.name = filename;
739	dirfile_key.length = strlen (filename);
740	df = hash_find_item (&dir->dirfiles, &dirfile_key);
741	#else /* CONFIG_WITH_STRCACHE2 */
742	dirfile_key.length = strlen (filename);
743	dirfile_key.name = filename
744	= strcache_add_len (filename, dirfile_key.length);
745	df = hash_find_item_strcached (&dir->dirfiles, &dirfile_key);
746	#endif /* CONFIG_WITH_STRCACHE2 */
747	if (df)
748	return !df->impossible;
749	}
750
751	/* The file was not found in the hashed list.
752	Try to read the directory further. */
753
754	if (dir->dirstream == 0)
755	{
756	#if defined(WINDOWS32) && !defined(KMK)
757	/*
758	* Check to see if directory has changed since last read. FAT
759	* filesystems force a rehash always as mtime does not change
760	* on directories (ugh!).
761	*/
762	# ifdef KMK
763	if (dir->path_key && time(NULL) > dc->last_updated + 2) /* KMK: Only recheck every 2 seconds. */
764	# else
765	if (dir->path_key)
766	# endif
767	{
768	if ((dir->fs_flags & FS_FAT) != 0)
769	{
770	dir->mtime = time ((time_t *) 0);
771	rehash = 1;
772	}
773	# ifdef KMK
774	else if ( birdStatModTimeOnly (dir->path_key, &st.st_mtim, 1) == 0
775	&& st.st_mtime > dir->mtime)
776	# else
777	else if (stat (dir->path_key, &st) == 0 && st.st_mtime > dir->mtime)
778	# endif
779	{
780	/* reset date stamp to show most recent re-process. */
781	dir->mtime = st.st_mtime;
782	rehash = 1;
783	}
784
785
786	/* If it has been already read in, all done. */
787	if (!rehash)
788	return 0;
789
790	/* make sure directory can still be opened; if not return. */
791	dir->dirstream = opendir (dir->path_key);
792	if (!dir->dirstream)
793	return 0;
794	# ifdef KMK
795	dc->last_updated = time(NULL);
796	# endif
797	}
798	else
799	#endif
800	/* The directory has been all read in. */
801	return 0;
802	}
803
804	while (1)
805	{
806	/* Enter the file in the hash table. */
807	unsigned int len;
808	struct dirfile dirfile_key;
809	struct dirfile **dirfile_slot;
810
811	ENULLLOOP (d, readdir (dir->dirstream));
812	if (d == 0)
813	{
814	/* bird: Workaround for smbfs mounts returning EBADF at the end of the search.
815	To exactly determin the cause here, I should probably do some smbfs
816	tracing, but for now just ignoring the EBADF on seems to work.
817	(The smb server is 64-bit vista, btw.) */
818	#if defined (__FreeBSD__)
819	struct statfs stfs;
820	int saved_errno = errno;
821	errno = 0;
822	if (saved_errno == EBADF
823	&& !fstatfs (dirfd (dir->dirstream), &stfs)
824	&& !(stfs.f_flags & MNT_LOCAL)
825	&& !strcmp(stfs.f_fstypename, "smbfs"))
826	{
827	/*fprintf (stderr, "EBADF on remote fs! dirfd=%d errno=%d\n",
828	dirfd (dir->dirstream), errno);*/
829	saved_errno = 0;
830	}
831	errno = saved_errno;
832	#endif
833	/* bird: end */
834	if (errno)
835	fatal (NILF, "INTERNAL: readdir(%p): %s (filename=%s)\n", (void *)dir, strerror (errno), filename);
836	break;
837	}
838
839	#if defined(VMS) && defined(HAVE_DIRENT_H)
840	/* In VMS we get file versions too, which have to be stripped off */
841	{
842	char *p = strrchr (d->d_name, ';');
843	if (p)
844	*p = '\0';
845	}
846	#endif
847	if (!REAL_DIR_ENTRY (d))
848	continue;
849
850	len = NAMLEN (d);
851	#ifndef CONFIG_WITH_STRCACHE2
852	dirfile_key.name = d->d_name;
853	dirfile_key.length = len;
854	dirfile_slot = (struct dirfile **) hash_find_slot (&dir->dirfiles, &dirfile_key);
855	#else
856	# if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
857	dirfile_key.name = strcache_add_len (downcase(d->d_name), len);
858	# else
859	dirfile_key.name = strcache_add_len (d->d_name, len);
860	# endif
861	dirfile_key.length = len;
862	dirfile_slot = (struct dirfile **) hash_find_slot_strcached (&dir->dirfiles, &dirfile_key);
863	#endif
864	#ifdef WINDOWS32
865	/*
866	* If re-reading a directory, don't cache files that have
867	* already been discovered.
868	*/
869	if (! rehash \|\| HASH_VACANT (*dirfile_slot))
870	#endif
871	{
872	#ifndef CONFIG_WITH_ALLOC_CACHES
873	df = xmalloc (sizeof (struct dirfile));
874	#else
875	df = alloccache_alloc (&dirfile_cache);
876	#endif
877	#ifndef CONFIG_WITH_STRCACHE2
878	#if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
879	df->name = strcache_add_len (downcase(d->d_name), len);
880	#else
881	df->name = strcache_add_len (d->d_name, len);
882	#endif
883	#else /* CONFIG_WITH_STRCACHE2 */
884	df->name = dirfile_key.name;
885	#endif /* CONFIG_WITH_STRCACHE2 */
886	df->length = len;
887	df->impossible = 0;
888	hash_insert_at (&dir->dirfiles, df, dirfile_slot);
889	}
890	/* Check if the name matches the one we're searching for. */
891	#ifndef CONFIG_WITH_STRCACHE2
892	if (filename != 0 && patheq (d->d_name, filename))
893	#else
894	if (filename != 0 && dirfile_key.name == filename)
895	#endif
896	return 1;
897	}
898
899	/* If the directory has been completely read in,
900	close the stream and reset the pointer to nil. */
901	if (d == 0)
902	{
903	--open_directories;
904	closedir (dir->dirstream);
905	dir->dirstream = 0;
906	}
907	return 0;
908	}
909
910	/* Return 1 if the name FILENAME in directory DIRNAME
911	is entered in the dir hash table.
912	FILENAME must contain no slashes. */
913
914	int
915	dir_file_exists_p (const char dirname, const char filename)
916	{
917	return dir_contents_file_exists_p (find_directory (dirname)->contents,
918	filename);
919	}
920
921
922	/* Return 1 if the file named NAME exists. */
923
924	int
925	file_exists_p (const char *name)
926	{
927	const char *dirend;
928	const char *dirname;
929	const char *slash;
930
931	#ifndef NO_ARCHIVES
932	if (ar_name (name))
933	return ar_member_date (name) != (time_t) -1;
934	#endif
935
936	#ifdef VMS
937	dirend = strrchr (name, ']');
938	if (dirend == 0)
939	dirend = strrchr (name, ':');
940	if (dirend == 0)
941	return dir_file_exists_p ("[]", name);
942	#else /* !VMS */
943	dirend = strrchr (name, '/');
944	#ifdef HAVE_DOS_PATHS
945	/* Forward and backslashes might be mixed. We need the rightmost one. */
946	{
947	const char *bslash = strrchr(name, '\\');
948	if (!dirend \|\| bslash > dirend)
949	dirend = bslash;
950	/* The case of "d:file". */
951	if (!dirend && name[0] && name[1] == ':')
952	dirend = name + 1;
953	}
954	#endif /* HAVE_DOS_PATHS */
955	if (dirend == 0)
956	#ifndef _AMIGA
957	return dir_file_exists_p (".", name);
958	#else /* !VMS && !AMIGA */
959	return dir_file_exists_p ("", name);
960	#endif /* AMIGA */
961	#endif /* VMS */
962
963	slash = dirend;
964	if (dirend == name)
965	dirname = "/";
966	else
967	{
968	char *p;
969	#ifdef HAVE_DOS_PATHS
970	/* d:/ and d: are very different... */
971	if (dirend < name + 3 && name[1] == ':' &&
972	(dirend == '/' \|\| dirend == '\\' \|\| *dirend == ':'))
973	dirend++;
974	#endif
975	p = alloca (dirend - name + 1);
976	memcpy (p, name, dirend - name);
977	p[dirend - name] = '\0';
978	dirname = p;
979	}
980	return dir_file_exists_p (dirname, slash + 1);
981	}
982
983
984	/* Mark FILENAME as `impossible' for `file_impossible_p'.
985	This means an attempt has been made to search for FILENAME
986	as an intermediate file, and it has failed. */
987
988	void
989	file_impossible (const char *filename)
990	{
991	const char *dirend;
992	const char *p = filename;
993	struct directory *dir;
994	struct dirfile *new;
995
996	#ifdef VMS
997	dirend = strrchr (p, ']');
998	if (dirend == 0)
999	dirend = strrchr (p, ':');
1000	dirend++;
1001	if (dirend == (char *)1)
1002	dir = find_directory ("[]");
1003	#else
1004	dirend = strrchr (p, '/');
1005	# ifdef HAVE_DOS_PATHS
1006	/* Forward and backslashes might be mixed. We need the rightmost one. */
1007	{
1008	const char *bslash = strrchr(p, '\\');
1009	if (!dirend \|\| bslash > dirend)
1010	dirend = bslash;
1011	/* The case of "d:file". */
1012	if (!dirend && p[0] && p[1] == ':')
1013	dirend = p + 1;
1014	}
1015	# endif /* HAVE_DOS_PATHS */
1016	if (dirend == 0)
1017	# ifdef _AMIGA
1018	dir = find_directory ("");
1019	# else /* !VMS && !AMIGA */
1020	dir = find_directory (".");
1021	# endif /* AMIGA */
1022	#endif /* VMS */
1023	else
1024	{
1025	const char *dirname;
1026	const char *slash = dirend;
1027	if (dirend == p)
1028	dirname = "/";
1029	else
1030	{
1031	char *cp;
1032	#ifdef HAVE_DOS_PATHS
1033	/* d:/ and d: are very different... */
1034	if (dirend < p + 3 && p[1] == ':' &&
1035	(dirend == '/' \|\| dirend == '\\' \|\| *dirend == ':'))
1036	dirend++;
1037	#endif
1038	cp = alloca (dirend - p + 1);
1039	memcpy (cp, p, dirend - p);
1040	cp[dirend - p] = '\0';
1041	dirname = cp;
1042	}
1043	dir = find_directory (dirname);
1044	filename = p = slash + 1;
1045	}
1046
1047	if (dir->contents == 0)
1048	/* The directory could not be stat'd. We allocate a contents
1049	structure for it, but leave it out of the contents hash table. */
1050	#ifndef CONFIG_WITH_ALLOC_CACHES
1051	dir->contents = xcalloc (sizeof (struct directory_contents));
1052	#else
1053	dir->contents = alloccache_calloc (&directory_contents_cache);
1054	#endif
1055
1056	if (dir->contents->dirfiles.ht_vec == 0)
1057	{
1058	#ifndef CONFIG_WITH_STRCACHE2
1059	hash_init (&dir->contents->dirfiles, DIRFILE_BUCKETS,
1060	dirfile_hash_1, dirfile_hash_2, dirfile_hash_cmp);
1061	#else /* CONFIG_WITH_STRCACHE2 */
1062	hash_init_strcached (&dir->contents->dirfiles, DIRFILE_BUCKETS,
1063	&file_strcache, offsetof (struct dirfile, name));
1064	#endif /* CONFIG_WITH_STRCACHE2 */
1065	}
1066
1067	/* Make a new entry and put it in the table. */
1068
1069	#ifndef CONFIG_WITH_ALLOC_CACHES
1070	new = xmalloc (sizeof (struct dirfile));
1071	#else
1072	new = alloccache_alloc (&dirfile_cache);
1073	#endif
1074	new->length = strlen (filename);
1075	#if defined(HAVE_CASE_INSENSITIVE_FS) && defined(VMS)
1076	new->name = strcache_add_len (downcase(filename), new->length);
1077	#else
1078	new->name = strcache_add_len (filename, new->length);
1079	#endif
1080	new->impossible = 1;
1081	#ifndef CONFIG_WITH_STRCACHE2
1082	hash_insert (&dir->contents->dirfiles, new);
1083	#else /* CONFIG_WITH_STRCACHE2 */
1084	hash_insert_strcached (&dir->contents->dirfiles, new);
1085	#endif /* CONFIG_WITH_STRCACHE2 */
1086	}
1087
1088
1089	/* Return nonzero if FILENAME has been marked impossible. */
1090
1091	int
1092	file_impossible_p (const char *filename)
1093	{
1094	const char *dirend;
1095	const char *p = filename;
1096	struct directory_contents *dir;
1097	struct dirfile *dirfile;
1098	struct dirfile dirfile_key;
1099
1100	#ifdef VMS
1101	dirend = strrchr (filename, ']');
1102	if (dirend == 0)
1103	dir = find_directory ("[]")->contents;
1104	#else
1105	dirend = strrchr (filename, '/');
1106	#ifdef HAVE_DOS_PATHS
1107	/* Forward and backslashes might be mixed. We need the rightmost one. */
1108	{
1109	const char *bslash = strrchr(filename, '\\');
1110	if (!dirend \|\| bslash > dirend)
1111	dirend = bslash;
1112	/* The case of "d:file". */
1113	if (!dirend && filename[0] && filename[1] == ':')
1114	dirend = filename + 1;
1115	}
1116	#endif /* HAVE_DOS_PATHS */
1117	if (dirend == 0)
1118	#ifdef _AMIGA
1119	dir = find_directory ("")->contents;
1120	#else /* !VMS && !AMIGA */
1121	dir = find_directory (".")->contents;
1122	#endif /* AMIGA */
1123	#endif /* VMS */
1124	else
1125	{
1126	const char *dirname;
1127	const char *slash = dirend;
1128	if (dirend == filename)
1129	dirname = "/";
1130	else
1131	{
1132	char *cp;
1133	#ifdef HAVE_DOS_PATHS
1134	/* d:/ and d: are very different... */
1135	if (dirend < filename + 3 && filename[1] == ':' &&
1136	(dirend == '/' \|\| dirend == '\\' \|\| *dirend == ':'))
1137	dirend++;
1138	#endif
1139	cp = alloca (dirend - filename + 1);
1140	memcpy (cp, p, dirend - p);
1141	cp[dirend - p] = '\0';
1142	dirname = cp;
1143	}
1144	dir = find_directory (dirname)->contents;
1145	p = filename = slash + 1;
1146	}
1147
1148	if (dir == 0 \|\| dir->dirfiles.ht_vec == 0)
1149	/* There are no files entered for this directory. */
1150	return 0;
1151
1152	#ifdef __MSDOS__
1153	filename = dosify (p);
1154	#endif
1155	#ifdef HAVE_CASE_INSENSITIVE_FS
1156	filename = downcase (p);
1157	#endif
1158	#ifdef VMS
1159	filename = vmsify (p, 1);
1160	#endif
1161
1162	#ifndef CONFIG_WITH_STRCACHE2
1163	dirfile_key.name = filename;
1164	dirfile_key.length = strlen (filename);
1165	dirfile = hash_find_item (&dir->dirfiles, &dirfile_key);
1166	#else
1167	dirfile_key.length = strlen (filename);
1168	dirfile_key.name = strcache_add_len (filename, dirfile_key.length);
1169	dirfile = hash_find_item_strcached (&dir->dirfiles, &dirfile_key);
1170	#endif
1171	if (dirfile)
1172	return dirfile->impossible;
1173
1174	return 0;
1175	}
1176
1177
1178	/* Return the already allocated name in the
1179	directory hash table that matches DIR. */
1180
1181	const char *
1182	dir_name (const char *dir)
1183	{
1184	return find_directory (dir)->name;
1185	}
1186
1187
1188	/* Print the data base of directories. */
1189
1190	void
1191	print_dir_data_base (void)
1192	{
1193	unsigned int files;
1194	unsigned int impossible;
1195	struct directory **dir_slot;
1196	struct directory **dir_end;
1197
1198	puts (_("\n# Directories\n"));
1199
1200	files = impossible = 0;
1201
1202	dir_slot = (struct directory **) directories.ht_vec;
1203	dir_end = dir_slot + directories.ht_size;
1204	for ( ; dir_slot < dir_end; dir_slot++)
1205	{
1206	struct directory dir = dir_slot;
1207	if (! HASH_VACANT (dir))
1208	{
1209	if (dir->contents == 0)
1210	printf (_("# %s: could not be stat'd.\n"), dir->name);
1211	else if (dir->contents->dirfiles.ht_vec == 0)
1212	{
1213	#ifdef WINDOWS32
1214	printf (_("# %s (key %s, mtime %d): could not be opened.\n"),
1215	dir->name, dir->contents->path_key,dir->contents->mtime);
1216	#else /* WINDOWS32 */
1217	#ifdef VMS
1218	printf (_("# %s (device %d, inode [%d,%d,%d]): could not be opened.\n"),
1219	dir->name, dir->contents->dev,
1220	dir->contents->ino[0], dir->contents->ino[1],
1221	dir->contents->ino[2]);
1222	#else
1223	printf (_("# %s (device %ld, inode %ld): could not be opened.\n"),
1224	dir->name, (long int) dir->contents->dev,
1225	(long int) dir->contents->ino);
1226	#endif
1227	#endif /* WINDOWS32 */
1228	}
1229	else
1230	{
1231	unsigned int f = 0;
1232	unsigned int im = 0;
1233	struct dirfile **files_slot;
1234	struct dirfile **files_end;
1235
1236	files_slot = (struct dirfile **) dir->contents->dirfiles.ht_vec;
1237	files_end = files_slot + dir->contents->dirfiles.ht_size;
1238	for ( ; files_slot < files_end; files_slot++)
1239	{
1240	struct dirfile df = files_slot;
1241	if (! HASH_VACANT (df))
1242	{
1243	if (df->impossible)
1244	++im;
1245	else
1246	++f;
1247	}
1248	}
1249	#ifdef WINDOWS32
1250	printf (_("# %s (key %s, mtime %d): "),
1251	dir->name, dir->contents->path_key, dir->contents->mtime);
1252	#else /* WINDOWS32 */
1253	#ifdef VMS
1254	printf (_("# %s (device %d, inode [%d,%d,%d]): "),
1255	dir->name, dir->contents->dev,
1256	dir->contents->ino[0], dir->contents->ino[1],
1257	dir->contents->ino[2]);
1258	#else
1259	printf (_("# %s (device %ld, inode %ld): "),
1260	dir->name,
1261	(long)dir->contents->dev, (long)dir->contents->ino);
1262	#endif
1263	#endif /* WINDOWS32 */
1264	if (f == 0)
1265	fputs (_("No"), stdout);
1266	else
1267	printf ("%u", f);
1268	fputs (_(" files, "), stdout);
1269	if (im == 0)
1270	fputs (_("no"), stdout);
1271	else
1272	printf ("%u", im);
1273	fputs (_(" impossibilities"), stdout);
1274	if (dir->contents->dirstream == 0)
1275	puts (".");
1276	else
1277	puts (_(" so far."));
1278	files += f;
1279	impossible += im;
1280	#ifdef KMK
1281	fputs ("# ", stdout);
1282	hash_print_stats (&dir->contents->dirfiles, stdout);
1283	fputs ("\n", stdout);
1284	#endif
1285	}
1286	}
1287	}
1288
1289	fputs ("\n# ", stdout);
1290	if (files == 0)
1291	fputs (_("No"), stdout);
1292	else
1293	printf ("%u", files);
1294	fputs (_(" files, "), stdout);
1295	if (impossible == 0)
1296	fputs (_("no"), stdout);
1297	else
1298	printf ("%u", impossible);
1299	printf (_(" impossibilities in %lu directories.\n"), directories.ht_fill);
1300	#ifdef KMK
1301	fputs ("# directories: ", stdout);
1302	hash_print_stats (&directories, stdout);
1303	fputs ("\n# directory_contents: ", stdout);
1304	hash_print_stats (&directory_contents, stdout);
1305	fputs ("\n", stdout);
1306	#endif
1307	}
1308
1309
1310	/* Hooks for globbing. */
1311
1312	#include <glob.h>
1313
1314	/* Structure describing state of iterating through a directory hash table. */
1315
1316	struct dirstream
1317	{
1318	struct directory_contents contents; / The directory being read. */
1319	struct dirfile *dirfile_slot; / Current slot in table. */
1320	};
1321
1322	/* Forward declarations. */
1323	static __ptr_t open_dirstream (const char *);
1324	static struct dirent *read_dirstream (__ptr_t);
1325
1326	static __ptr_t
1327	open_dirstream (const char *directory)
1328	{
1329	struct dirstream *new;
1330	struct directory *dir = find_directory (directory);
1331
1332	if (dir->contents == 0 \|\| dir->contents->dirfiles.ht_vec == 0)
1333	/* DIR->contents is nil if the directory could not be stat'd.
1334	DIR->contents->dirfiles is nil if it could not be opened. */
1335	return 0;
1336
1337	/* Read all the contents of the directory now. There is no benefit
1338	in being lazy, since glob will want to see every file anyway. */
1339
1340	dir_contents_file_exists_p (dir->contents, 0);
1341
1342	new = xmalloc (sizeof (struct dirstream));
1343	new->contents = dir->contents;
1344	new->dirfile_slot = (struct dirfile **) new->contents->dirfiles.ht_vec;
1345
1346	return (__ptr_t) new;
1347	}
1348
1349	static struct dirent *
1350	read_dirstream (__ptr_t stream)
1351	{
1352	static char *buf;
1353	static unsigned int bufsz;
1354
1355	struct dirstream const ds = (struct dirstream ) stream;
1356	struct directory_contents *dc = ds->contents;
1357	struct dirfile dirfile_end = (struct dirfile ) dc->dirfiles.ht_vec + dc->dirfiles.ht_size;
1358
1359	while (ds->dirfile_slot < dirfile_end)
1360	{
1361	struct dirfile df = ds->dirfile_slot++;
1362	if (! HASH_VACANT (df) && !df->impossible)
1363	{
1364	/* The glob interface wants a `struct dirent', so mock one up. */
1365	struct dirent *d;
1366	unsigned int len = df->length + 1;
1367	unsigned int sz = sizeof (*d) - sizeof (d->d_name) + len;
1368	if (sz > bufsz)
1369	{
1370	bufsz *= 2;
1371	if (sz > bufsz)
1372	bufsz = sz;
1373	buf = xrealloc (buf, bufsz);
1374	}
1375	d = (struct dirent *) buf;
1376	#ifdef __MINGW32__
1377	# if __MINGW32_MAJOR_VERSION < 3 \|\| (__MINGW32_MAJOR_VERSION == 3 && \
1378	__MINGW32_MINOR_VERSION == 0)
1379	d->d_name = xmalloc(len);
1380	# endif
1381	#endif
1382	FAKE_DIR_ENTRY (d);
1383	#ifdef _DIRENT_HAVE_D_NAMLEN
1384	d->d_namlen = len - 1;
1385	#endif
1386	#ifdef _DIRENT_HAVE_D_TYPE
1387	d->d_type = DT_UNKNOWN;
1388	#endif
1389	memcpy (d->d_name, df->name, len);
1390	return d;
1391	}
1392	}
1393
1394	return 0;
1395	}
1396
1397	static void
1398	ansi_free (void *p)
1399	{
1400	if (p)
1401	free(p);
1402	}
1403
1404	/* On 64 bit ReliantUNIX (5.44 and above) in LFS mode, stat() is actually a
1405	* macro for stat64(). If stat is a macro, make a local wrapper function to
1406	* invoke it.
1407	*/
1408	#ifndef stat
1409	# ifndef VMS
1410	int stat (const char path, struct stat sbuf);
1411	# endif
1412	# define local_stat stat
1413	#else
1414	static int
1415	local_stat (const char path, struct stat buf)
1416	{
1417	int e;
1418
1419	EINTRLOOP (e, stat (path, buf));
1420	return e;
1421	}
1422	#endif
1423
1424	#ifdef KMK
1425	static int dir_exists_p (const char *dirname)
1426	{
1427	if (file_exists_p (dirname))
1428	{
1429	struct directory *dir = find_directory (dirname);
1430	if (dir != NULL && dir->contents && dir->contents->dirfiles.ht_vec != NULL)
1431	return 1;
1432	}
1433	return 0;
1434	}
1435	#endif
1436
1437	void
1438	dir_setup_glob (glob_t *gl)
1439	{
1440	gl->gl_opendir = open_dirstream;
1441	gl->gl_readdir = read_dirstream;
1442	gl->gl_closedir = ansi_free;
1443	gl->gl_stat = local_stat;
1444	#ifdef __EMX__ /* The FreeBSD implementation actually uses gl_lstat!! */
1445	gl->gl_lstat = local_stat;
1446	#endif
1447	#ifdef KMK
1448	gl->gl_exists = file_exists_p;
1449	gl->gl_isdir = dir_exists_p;
1450	#endif
1451	/* We don't bother setting gl_lstat, since glob never calls it.
1452	The slot is only there for compatibility with 4.4 BSD. */
1453	}
1454
1455	void
1456	hash_init_directories (void)
1457	{
1458	#ifndef CONFIG_WITH_STRCACHE2
1459	hash_init (&directories, DIRECTORY_BUCKETS,
1460	directory_hash_1, directory_hash_2, directory_hash_cmp);
1461	#else /* CONFIG_WITH_STRCACHE2 */
1462	hash_init_strcached (&directories, DIRECTORY_BUCKETS, &file_strcache,
1463	offsetof (struct directory, name));
1464	#endif /* CONFIG_WITH_STRCACHE2 */
1465	hash_init (&directory_contents, DIRECTORY_BUCKETS,
1466	directory_contents_hash_1, directory_contents_hash_2,
1467	directory_contents_hash_cmp);
1468	#ifdef CONFIG_WITH_ALLOC_CACHES
1469	alloccache_init (&directories_cache, sizeof (struct directory),
1470	"directories", NULL, NULL);
1471	alloccache_init (&directory_contents_cache, sizeof (struct directory_contents),
1472	"directory_contents", NULL, NULL);
1473	alloccache_init (&dirfile_cache, sizeof (struct dirfile),
1474	"dirfile", NULL, NULL);
1475	#endif /* CONFIG_WITH_ALLOC_CACHES */
1476	}
1477

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source: kBuild/trunk/src/kmk/dir.c@ 2702

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