glob.c@ 298

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1	/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
2
3	This library is free software; you can redistribute it and/or
4	modify it under the terms of the GNU Library General Public License as
5	published by the Free Software Foundation; either version 2 of the
6	License, or (at your option) any later version.
7
8	This library is distributed in the hope that it will be useful,
9	but WITHOUT ANY WARRANTY; without even the implied warranty of
10	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11	Library General Public License for more details.
12
13	You should have received a copy of the GNU Library General Public
14	License along with this library; see the file COPYING.LIB. If not,
15	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16	Boston, MA 02111-1307, USA. */
17
18	/* AIX requires this to be the first thing in the file. */
19	#if defined _AIX && !defined __GNUC__
20	#pragma alloca
21	#endif
22
23	#ifdef HAVE_CONFIG_H
24	# include <config.h>
25	#endif
26
27	/* Enable GNU extensions in glob.h. */
28	#ifndef _GNU_SOURCE
29	# define _GNU_SOURCE 1
30	#endif
31
32	#include <errno.h>
33	#include <sys/types.h>
34	#include <sys/stat.h>
35
36	/* Outcomment the following line for production quality code. */
37	/* #define NDEBUG 1 */
38	#include <assert.h>
39
40	#include <stdio.h> /* Needed on stupid SunOS for assert. */
41
42
43	/* Comment out all this code if we are using the GNU C Library, and are not
44	actually compiling the library itself. This code is part of the GNU C
45	Library, but also included in many other GNU distributions. Compiling
46	and linking in this code is a waste when using the GNU C library
47	(especially if it is a shared library). Rather than having every GNU
48	program understand `configure --with-gnu-libc' and omit the object files,
49	it is simpler to just do this in the source for each such file. */
50
51	#define GLOB_INTERFACE_VERSION 1
52	#if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
53	# include <gnu-versions.h>
54	# if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
55	# define ELIDE_CODE
56	# endif
57	#endif
58
59	#ifndef ELIDE_CODE
60
61	#if defined STDC_HEADERS \|\| defined __GNU_LIBRARY__
62	# include <stddef.h>
63	#endif
64
65	#if defined HAVE_UNISTD_H \|\| defined _LIBC
66	# include <unistd.h>
67	# ifndef POSIX
68	# ifdef _POSIX_VERSION
69	# define POSIX
70	# endif
71	# endif
72	#endif
73
74	#if !defined _AMIGA && !defined VMS && !defined WINDOWS32
75	# include <pwd.h>
76	#endif
77
78	#if !defined __GNU_LIBRARY__ && !defined STDC_HEADERS
79	extern int errno;
80	#endif
81	#ifndef __set_errno
82	# define __set_errno(val) errno = (val)
83	#endif
84
85	#ifndef NULL
86	# define NULL 0
87	#endif
88
89
90	#if defined HAVE_DIRENT_H \|\| defined __GNU_LIBRARY__
91	# include <dirent.h>
92	# define NAMLEN(dirent) strlen((dirent)->d_name)
93	#else
94	# define dirent direct
95	# define NAMLEN(dirent) (dirent)->d_namlen
96	# ifdef HAVE_SYS_NDIR_H
97	# include <sys/ndir.h>
98	# endif
99	# ifdef HAVE_SYS_DIR_H
100	# include <sys/dir.h>
101	# endif
102	# ifdef HAVE_NDIR_H
103	# include <ndir.h>
104	# endif
105	# ifdef HAVE_VMSDIR_H
106	# include "vmsdir.h"
107	# endif /* HAVE_VMSDIR_H */
108	#endif
109
110
111	/* In GNU systems, <dirent.h> defines this macro for us. */
112	#ifdef _D_NAMLEN
113	# undef NAMLEN
114	# define NAMLEN(d) _D_NAMLEN(d)
115	#endif
116
117	/* When used in the GNU libc the symbol _DIRENT_HAVE_D_TYPE is available
118	if the `d_type' member for `struct dirent' is available. */
119	#ifdef _DIRENT_HAVE_D_TYPE
120	# define HAVE_D_TYPE 1
121	#endif
122
123
124	#if (defined POSIX \|\| defined WINDOWS32) && !defined __GNU_LIBRARY__
125	/* Posix does not require that the d_ino field be present, and some
126	systems do not provide it. */
127	# define REAL_DIR_ENTRY(dp) 1
128	#else
129	# define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
130	#endif /* POSIX */
131
132	#if defined STDC_HEADERS \|\| defined __GNU_LIBRARY__
133	# include <stdlib.h>
134	# include <string.h>
135	# define ANSI_STRING
136	#else /* No standard headers. */
137
138	extern char *getenv ();
139
140	# ifdef HAVE_STRING_H
141	# include <string.h>
142	# define ANSI_STRING
143	# else
144	# include <strings.h>
145	# endif
146	# ifdef HAVE_MEMORY_H
147	# include <memory.h>
148	# endif
149
150	extern char malloc (), realloc ();
151	extern void free ();
152
153	extern void qsort ();
154	extern void abort (), exit ();
155
156	#endif /* Standard headers. */
157
158	#ifndef ANSI_STRING
159
160	# ifndef bzero
161	extern void bzero ();
162	# endif
163	# ifndef bcopy
164	extern void bcopy ();
165	# endif
166
167	# define memcpy(d, s, n) bcopy ((s), (d), (n))
168	# define strrchr rindex
169	/* memset is only used for zero here, but let's be paranoid. */
170	# define memset(s, better_be_zero, n) \
171	((void) ((better_be_zero) == 0 ? (bzero((s), (n)), 0) : (abort(), 0)))
172	#endif /* Not ANSI_STRING. */
173
174	#if !defined HAVE_STRCOLL && !defined _LIBC
175	# define strcoll strcmp
176	#endif
177
178	#if !defined HAVE_MEMPCPY && __GLIBC__ - 0 == 2 && __GLIBC_MINOR__ >= 1
179	# define HAVE_MEMPCPY 1
180	# undef mempcpy
181	# define mempcpy(Dest, Src, Len) __mempcpy (Dest, Src, Len)
182	#endif
183
184	#ifndef __GNU_LIBRARY__
185	# ifdef __GNUC__
186	__inline
187	# endif
188	# ifndef __SASC
189	# ifdef WINDOWS32
190	static void *
191	# else
192	static char *
193	# endif
194	my_realloc (p, n)
195	char *p;
196	unsigned int n;
197	{
198	/* These casts are the for sake of the broken Ultrix compiler,
199	which warns of illegal pointer combinations otherwise. */
200	if (p == NULL)
201	return (char *) malloc (n);
202	return (char *) realloc (p, n);
203	}
204	# define realloc my_realloc
205	# endif /* __SASC */
206	#endif /* __GNU_LIBRARY__ */
207
208
209	#if !defined __alloca && !defined __GNU_LIBRARY__
210
211	# ifdef __GNUC__
212	# undef alloca
213	# define alloca(n) __builtin_alloca (n)
214	# else /* Not GCC. */
215	# ifdef HAVE_ALLOCA_H
216	# include <alloca.h>
217	# else /* Not HAVE_ALLOCA_H. */
218	# ifndef _AIX
219	# ifdef WINDOWS32
220	# include <malloc.h>
221	# else
222	extern char *alloca ();
223	# endif /* WINDOWS32 */
224	# endif /* Not _AIX. */
225	# endif /* sparc or HAVE_ALLOCA_H. */
226	# endif /* GCC. */
227
228	# define __alloca alloca
229
230	#endif
231
232	#ifndef __GNU_LIBRARY__
233	# define __stat stat
234	# ifdef STAT_MACROS_BROKEN
235	# undef S_ISDIR
236	# endif
237	# ifndef S_ISDIR
238	# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
239	# endif
240	#endif
241
242	#ifdef _LIBC
243	# undef strdup
244	# define strdup(str) __strdup (str)
245	# define sysconf(id) __sysconf (id)
246	# define closedir(dir) __closedir (dir)
247	# define opendir(name) __opendir (name)
248	# define readdir(str) __readdir (str)
249	# define getpwnam_r(name, bufp, buf, len, res) \
250	__getpwnam_r (name, bufp, buf, len, res)
251	# ifndef __stat
252	# define __stat(fname, buf) __xstat (_STAT_VER, fname, buf)
253	# endif
254	#endif
255
256	#if !(defined STDC_HEADERS \|\| defined __GNU_LIBRARY__)
257	# undef size_t
258	# define size_t unsigned int
259	#endif
260
261	/* Some system header files erroneously define these.
262	We want our own definitions from <fnmatch.h> to take precedence. */
263	#ifndef __GNU_LIBRARY__
264	# undef FNM_PATHNAME
265	# undef FNM_NOESCAPE
266	# undef FNM_PERIOD
267	#endif
268	#include <fnmatch.h>
269
270	/* Some system header files erroneously define these.
271	We want our own definitions from <glob.h> to take precedence. */
272	#ifndef __GNU_LIBRARY__
273	# undef GLOB_ERR
274	# undef GLOB_MARK
275	# undef GLOB_NOSORT
276	# undef GLOB_DOOFFS
277	# undef GLOB_NOCHECK
278	# undef GLOB_APPEND
279	# undef GLOB_NOESCAPE
280	# undef GLOB_PERIOD
281	#endif
282	#include <glob.h>
283
284	#ifdef HAVE_GETLOGIN_R
285	extern int getlogin_r __P ((char *, size_t));
286	#else
287	extern char *getlogin __P ((void));
288	#endif
289
290
291	static
292	#if __GNUC__ - 0 >= 2
293	inline
294	#endif
295	const char next_brace_sub __P ((const char begin));
296	static int glob_in_dir __P ((const char pattern, const char directory,
297	int flags,
298	int (errfunc) (const char , int),
299	glob_t *pglob));
300	static int prefix_array __P ((const char prefix, char *array, size_t n));
301	static int collated_compare __P ((const __ptr_t, const __ptr_t));
302
303	#ifdef VMS
304	/* these compilers like prototypes */
305	#if !defined _LIBC \|\| !defined NO_GLOB_PATTERN_P
306	int __glob_pattern_p (const char *pattern, int quote);
307	#endif
308	#endif
309
310	/* Find the end of the sub-pattern in a brace expression. We define
311	this as an inline function if the compiler permits. */
312	static
313	#if __GNUC__ - 0 >= 2
314	inline
315	#endif
316	const char *
317	next_brace_sub (begin)
318	const char *begin;
319	{
320	unsigned int depth = 0;
321	const char *cp = begin;
322
323	while (1)
324	{
325	if (depth == 0)
326	{
327	if (cp != ',' && cp != '}' && *cp != '\0')
328	{
329	if (*cp == '{')
330	++depth;
331	++cp;
332	continue;
333	}
334	}
335	else
336	{
337	while (cp != '\0' && (cp != '}' \|\| depth > 0))
338	{
339	if (*cp == '}')
340	--depth;
341	++cp;
342	}
343	if (*cp == '\0')
344	/* An incorrectly terminated brace expression. */
345	return NULL;
346
347	continue;
348	}
349	break;
350	}
351
352	return cp;
353	}
354
355	/* Do glob searching for PATTERN, placing results in PGLOB.
356	The bits defined above may be set in FLAGS.
357	If a directory cannot be opened or read and ERRFUNC is not nil,
358	it is called with the pathname that caused the error, and the
359	`errno' value from the failing call; if it returns non-zero
360	`glob' returns GLOB_ABORTED; if it returns zero, the error is ignored.
361	If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
362	Otherwise, `glob' returns zero. */
363	int
364	glob (pattern, flags, errfunc, pglob)
365	const char *pattern;
366	int flags;
367	int (errfunc) __P ((const char , int));
368	glob_t *pglob;
369	{
370	const char *filename;
371	const char *dirname;
372	size_t dirlen;
373	int status;
374	int oldcount;
375
376	if (pattern == NULL \|\| pglob == NULL \|\| (flags & ~__GLOB_FLAGS) != 0)
377	{
378	__set_errno (EINVAL);
379	return -1;
380	}
381
382	if (flags & GLOB_BRACE)
383	{
384	const char *begin = strchr (pattern, '{');
385	if (begin != NULL)
386	{
387	/* Allocate working buffer large enough for our work. Note that
388	we have at least an opening and closing brace. */
389	int firstc;
390	char *alt_start;
391	const char *p;
392	const char *next;
393	const char *rest;
394	size_t rest_len;
395	#ifdef __GNUC__
396	char onealt[strlen (pattern) - 1];
397	#else
398	char onealt = (char ) malloc (strlen (pattern) - 1);
399	if (onealt == NULL)
400	{
401	if (!(flags & GLOB_APPEND))
402	globfree (pglob);
403	return GLOB_NOSPACE;
404	}
405	#endif
406
407	/* We know the prefix for all sub-patterns. */
408	#ifdef HAVE_MEMPCPY
409	alt_start = mempcpy (onealt, pattern, begin - pattern);
410	#else
411	memcpy (onealt, pattern, begin - pattern);
412	alt_start = &onealt[begin - pattern];
413	#endif
414
415	/* Find the first sub-pattern and at the same time find the
416	rest after the closing brace. */
417	next = next_brace_sub (begin + 1);
418	if (next == NULL)
419	{
420	/* It is an illegal expression. */
421	#ifndef __GNUC__
422	free (onealt);
423	#endif
424	return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
425	}
426
427	/* Now find the end of the whole brace expression. */
428	rest = next;
429	while (*rest != '}')
430	{
431	rest = next_brace_sub (rest + 1);
432	if (rest == NULL)
433	{
434	/* It is an illegal expression. */
435	#ifndef __GNUC__
436	free (onealt);
437	#endif
438	return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
439	}
440	}
441	/* Please note that we now can be sure the brace expression
442	is well-formed. */
443	rest_len = strlen (++rest) + 1;
444
445	/* We have a brace expression. BEGIN points to the opening {,
446	NEXT points past the terminator of the first element, and END
447	points past the final }. We will accumulate result names from
448	recursive runs for each brace alternative in the buffer using
449	GLOB_APPEND. */
450
451	if (!(flags & GLOB_APPEND))
452	{
453	/* This call is to set a new vector, so clear out the
454	vector so we can append to it. */
455	pglob->gl_pathc = 0;
456	pglob->gl_pathv = NULL;
457	}
458	firstc = pglob->gl_pathc;
459
460	p = begin + 1;
461	while (1)
462	{
463	int result;
464
465	/* Construct the new glob expression. */
466	#ifdef HAVE_MEMPCPY
467	mempcpy (mempcpy (alt_start, p, next - p), rest, rest_len);
468	#else
469	memcpy (alt_start, p, next - p);
470	memcpy (&alt_start[next - p], rest, rest_len);
471	#endif
472
473	result = glob (onealt,
474	((flags & ~(GLOB_NOCHECK\|GLOB_NOMAGIC))
475	\| GLOB_APPEND), errfunc, pglob);
476
477	/* If we got an error, return it. */
478	if (result && result != GLOB_NOMATCH)
479	{
480	#ifndef __GNUC__
481	free (onealt);
482	#endif
483	if (!(flags & GLOB_APPEND))
484	globfree (pglob);
485	return result;
486	}
487
488	if (*next == '}')
489	/* We saw the last entry. */
490	break;
491
492	p = next + 1;
493	next = next_brace_sub (p);
494	assert (next != NULL);
495	}
496
497	#ifndef __GNUC__
498	free (onealt);
499	#endif
500
501	if (pglob->gl_pathc != firstc)
502	/* We found some entries. */
503	return 0;
504	else if (!(flags & (GLOB_NOCHECK\|GLOB_NOMAGIC)))
505	return GLOB_NOMATCH;
506	}
507	}
508
509	/* Find the filename. */
510	filename = strrchr (pattern, '/');
511	#if defined __MSDOS__ \|\| defined WINDOWS32
512	/* The case of "d:pattern". Since `:' is not allowed in
513	file names, we can safely assume that wherever it
514	happens in pattern, it signals the filename part. This
515	is so we could some day support patterns like "[a-z]:foo". */
516	if (filename == NULL)
517	filename = strchr (pattern, ':');
518	#endif /* __MSDOS__ \|\| WINDOWS32 */
519	if (filename == NULL)
520	{
521	/* This can mean two things: a simple name or "~name". The later
522	case is nothing but a notation for a directory. */
523	if ((flags & (GLOB_TILDE\|GLOB_TILDE_CHECK)) && pattern[0] == '~')
524	{
525	dirname = pattern;
526	dirlen = strlen (pattern);
527
528	/* Set FILENAME to NULL as a special flag. This is ugly but
529	other solutions would require much more code. We test for
530	this special case below. */
531	filename = NULL;
532	}
533	else
534	{
535	filename = pattern;
536	#ifdef _AMIGA
537	dirname = "";
538	#else
539	dirname = ".";
540	#endif
541	dirlen = 0;
542	}
543	}
544	else if (filename == pattern)
545	{
546	/* "/pattern". */
547	dirname = "/";
548	dirlen = 1;
549	++filename;
550	}
551	else
552	{
553	char *newp;
554	dirlen = filename - pattern;
555	#if defined __MSDOS__ \|\| defined WINDOWS32
556	if (*filename == ':'
557	\|\| (filename > pattern + 1 && filename[-1] == ':'))
558	{
559	char *drive_spec;
560
561	++dirlen;
562	drive_spec = (char *) __alloca (dirlen + 1);
563	#ifdef HAVE_MEMPCPY
564	((char ) mempcpy (drive_spec, pattern, dirlen)) = '\0';
565	#else
566	memcpy (drive_spec, pattern, dirlen);
567	drive_spec[dirlen] = '\0';
568	#endif
569	/* For now, disallow wildcards in the drive spec, to
570	prevent infinite recursion in glob. */
571	if (__glob_pattern_p (drive_spec, !(flags & GLOB_NOESCAPE)))
572	return GLOB_NOMATCH;
573	/* If this is "d:pattern", we need to copy `:' to DIRNAME
574	as well. If it's "d:/pattern", don't remove the slash
575	from "d:/", since "d:" and "d:/" are not the same.*/
576	}
577	#endif
578	newp = (char *) __alloca (dirlen + 1);
579	#ifdef HAVE_MEMPCPY
580	((char ) mempcpy (newp, pattern, dirlen)) = '\0';
581	#else
582	memcpy (newp, pattern, dirlen);
583	newp[dirlen] = '\0';
584	#endif
585	dirname = newp;
586	++filename;
587
588	if (filename[0] == '\0'
589	#if defined __MSDOS__ \|\| defined WINDOWS32
590	&& dirname[dirlen - 1] != ':'
591	&& (dirlen < 3 \|\| dirname[dirlen - 2] != ':'
592	\|\| dirname[dirlen - 1] != '/')
593	#endif
594	&& dirlen > 1)
595	/* "pattern/". Expand "pattern", appending slashes. */
596	{
597	int val = glob (dirname, flags \| GLOB_MARK, errfunc, pglob);
598	if (val == 0)
599	pglob->gl_flags = ((pglob->gl_flags & ~GLOB_MARK)
600	\| (flags & GLOB_MARK));
601	return val;
602	}
603	}
604
605	if (!(flags & GLOB_APPEND))
606	{
607	pglob->gl_pathc = 0;
608	pglob->gl_pathv = NULL;
609	}
610
611	oldcount = pglob->gl_pathc;
612
613	#ifndef VMS
614	if ((flags & (GLOB_TILDE\|GLOB_TILDE_CHECK)) && dirname[0] == '~')
615	{
616	if (dirname[1] == '\0' \|\| dirname[1] == '/')
617	{
618	/* Look up home directory. */
619	#ifdef VMS
620	/* This isn't obvious, RTLs of DECC and VAXC know about "HOME" */
621	const char *home_dir = getenv ("SYS$LOGIN");
622	#else
623	const char *home_dir = getenv ("HOME");
624	#endif
625	# ifdef _AMIGA
626	if (home_dir == NULL \|\| home_dir[0] == '\0')
627	home_dir = "SYS:";
628	# else
629	# ifdef WINDOWS32
630	if (home_dir == NULL \|\| home_dir[0] == '\0')
631	home_dir = "c:/users/default"; /* poor default */
632	# else
633	# ifdef VMS
634	/* Again, this isn't obvious, if "HOME" isn't known "SYS$LOGIN" should be set */
635	if (home_dir == NULL \|\| home_dir[0] == '\0')
636	home_dir = "SYS$DISK:[]";
637	# else
638	if (home_dir == NULL \|\| home_dir[0] == '\0')
639	{
640	int success;
641	char *name;
642	# if defined HAVE_GETLOGIN_R \|\| defined _LIBC
643	size_t buflen = sysconf (_SC_LOGIN_NAME_MAX) + 1;
644
645	if (buflen == 0)
646	/* `sysconf' does not support _SC_LOGIN_NAME_MAX. Try
647	a moderate value. */
648	buflen = 20;
649	name = (char *) __alloca (buflen);
650
651	success = getlogin_r (name, buflen) >= 0;
652	# else
653	success = (name = getlogin ()) != NULL;
654	# endif
655	if (success)
656	{
657	struct passwd *p;
658	# if defined HAVE_GETPWNAM_R \|\| defined _LIBC
659	size_t pwbuflen = sysconf (_SC_GETPW_R_SIZE_MAX);
660	char *pwtmpbuf;
661	struct passwd pwbuf;
662	int save = errno;
663
664	if (pwbuflen == -1)
665	/* `sysconf' does not support _SC_GETPW_R_SIZE_MAX.
666	Try a moderate value. */
667	pwbuflen = 1024;
668	pwtmpbuf = (char *) __alloca (pwbuflen);
669
670	while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
671	!= 0)
672	{
673	if (errno != ERANGE)
674	{
675	p = NULL;
676	break;
677	}
678	pwbuflen *= 2;
679	pwtmpbuf = (char *) __alloca (pwbuflen);
680	__set_errno (save);
681	}
682	# else
683	p = getpwnam (name);
684	# endif
685	if (p != NULL)
686	home_dir = p->pw_dir;
687	}
688	}
689	if (home_dir == NULL \|\| home_dir[0] == '\0')
690	{
691	if (flags & GLOB_TILDE_CHECK)
692	return GLOB_NOMATCH;
693	else
694	home_dir = "~"; /* No luck. */
695	}
696	# endif /* VMS */
697	# endif /* WINDOWS32 */
698	# endif
699	/* Now construct the full directory. */
700	if (dirname[1] == '\0')
701	dirname = home_dir;
702	else
703	{
704	char *newp;
705	size_t home_len = strlen (home_dir);
706	newp = (char *) __alloca (home_len + dirlen);
707	# ifdef HAVE_MEMPCPY
708	mempcpy (mempcpy (newp, home_dir, home_len),
709	&dirname[1], dirlen);
710	# else
711	memcpy (newp, home_dir, home_len);
712	memcpy (&newp[home_len], &dirname[1], dirlen);
713	# endif
714	dirname = newp;
715	}
716	}
717	# if !defined _AMIGA && !defined WINDOWS32 && !defined VMS
718	else
719	{
720	char *end_name = strchr (dirname, '/');
721	const char *user_name;
722	const char *home_dir;
723
724	if (end_name == NULL)
725	user_name = dirname + 1;
726	else
727	{
728	char *newp;
729	newp = (char *) __alloca (end_name - dirname);
730	# ifdef HAVE_MEMPCPY
731	((char ) mempcpy (newp, dirname + 1, end_name - dirname))
732	= '\0';
733	# else
734	memcpy (newp, dirname + 1, end_name - dirname);
735	newp[end_name - dirname - 1] = '\0';
736	# endif
737	user_name = newp;
738	}
739
740	/* Look up specific user's home directory. */
741	{
742	struct passwd *p;
743	# if defined HAVE_GETPWNAM_R \|\| defined _LIBC
744	size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
745	char *pwtmpbuf;
746	struct passwd pwbuf;
747	int save = errno;
748
749	if (buflen == -1)
750	/* `sysconf' does not support _SC_GETPW_R_SIZE_MAX. Try a
751	moderate value. */
752	buflen = 1024;
753	pwtmpbuf = (char *) __alloca (buflen);
754
755	while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
756	{
757	if (errno != ERANGE)
758	{
759	p = NULL;
760	break;
761	}
762	buflen *= 2;
763	pwtmpbuf = __alloca (buflen);
764	__set_errno (save);
765	}
766	# else
767	p = getpwnam (user_name);
768	# endif
769	if (p != NULL)
770	home_dir = p->pw_dir;
771	else
772	home_dir = NULL;
773	}
774	/* If we found a home directory use this. */
775	if (home_dir != NULL)
776	{
777	char *newp;
778	size_t home_len = strlen (home_dir);
779	size_t rest_len = end_name == NULL ? 0 : strlen (end_name);
780	newp = (char *) __alloca (home_len + rest_len + 1);
781	# ifdef HAVE_MEMPCPY
782	((char ) mempcpy (mempcpy (newp, home_dir, home_len),
783	end_name, rest_len)) = '\0';
784	# else
785	memcpy (newp, home_dir, home_len);
786	memcpy (&newp[home_len], end_name, rest_len);
787	newp[home_len + rest_len] = '\0';
788	# endif
789	dirname = newp;
790	}
791	else
792	if (flags & GLOB_TILDE_CHECK)
793	/* We have to regard it as an error if we cannot find the
794	home directory. */
795	return GLOB_NOMATCH;
796	}
797	# endif /* Not Amiga && not WINDOWS32 && not VMS. */
798	}
799	#endif /* Not VMS. */
800
801	/* Now test whether we looked for "~" or "~NAME". In this case we
802	can give the answer now. */
803	if (filename == NULL)
804	{
805	struct stat st;
806
807	/* Return the directory if we don't check for error or if it exists. */
808	if ((flags & GLOB_NOCHECK)
809	\|\| (((flags & GLOB_ALTDIRFUNC)
810	? (*pglob->gl_stat) (dirname, &st)
811	: __stat (dirname, &st)) == 0
812	&& S_ISDIR (st.st_mode)))
813	{
814	pglob->gl_pathv
815	= (char **) realloc (pglob->gl_pathv,
816	(pglob->gl_pathc +
817	((flags & GLOB_DOOFFS) ?
818	pglob->gl_offs : 0) +
819	1 + 1) *
820	sizeof (char *));
821	if (pglob->gl_pathv == NULL)
822	return GLOB_NOSPACE;
823
824	if (flags & GLOB_DOOFFS)
825	while (pglob->gl_pathc < pglob->gl_offs)
826	pglob->gl_pathv[pglob->gl_pathc++] = NULL;
827
828	#if defined HAVE_STRDUP \|\| defined _LIBC
829	pglob->gl_pathv[pglob->gl_pathc] = strdup (dirname);
830	#else
831	{
832	size_t len = strlen (dirname) + 1;
833	char *dircopy = malloc (len);
834	if (dircopy != NULL)
835	pglob->gl_pathv[pglob->gl_pathc] = memcpy (dircopy, dirname,
836	len);
837	}
838	#endif
839	if (pglob->gl_pathv[pglob->gl_pathc] == NULL)
840	{
841	free (pglob->gl_pathv);
842	return GLOB_NOSPACE;
843	}
844	pglob->gl_pathv[++pglob->gl_pathc] = NULL;
845	pglob->gl_flags = flags;
846
847	return 0;
848	}
849
850	/* Not found. */
851	return GLOB_NOMATCH;
852	}
853
854	if (__glob_pattern_p (dirname, !(flags & GLOB_NOESCAPE)))
855	{
856	/* The directory name contains metacharacters, so we
857	have to glob for the directory, and then glob for
858	the pattern in each directory found. */
859	glob_t dirs;
860	register int i;
861
862	status = glob (dirname,
863	((flags & (GLOB_ERR \| GLOB_NOCHECK \| GLOB_NOESCAPE))
864	\| GLOB_NOSORT \| GLOB_ONLYDIR),
865	errfunc, &dirs);
866	if (status != 0)
867	return status;
868
869	/* We have successfully globbed the preceding directory name.
870	For each name we found, call glob_in_dir on it and FILENAME,
871	appending the results to PGLOB. */
872	for (i = 0; i < dirs.gl_pathc; ++i)
873	{
874	int old_pathc;
875
876	#ifdef SHELL
877	{
878	/* Make globbing interruptible in the bash shell. */
879	extern int interrupt_state;
880
881	if (interrupt_state)
882	{
883	globfree (&dirs);
884	globfree (&files);
885	return GLOB_ABORTED;
886	}
887	}
888	#endif /* SHELL. */
889
890	old_pathc = pglob->gl_pathc;
891	status = glob_in_dir (filename, dirs.gl_pathv[i],
892	((flags \| GLOB_APPEND)
893	& ~(GLOB_NOCHECK \| GLOB_ERR)),
894	errfunc, pglob);
895	if (status == GLOB_NOMATCH)
896	/* No matches in this directory. Try the next. */
897	continue;
898
899	if (status != 0)
900	{
901	globfree (&dirs);
902	globfree (pglob);
903	return status;
904	}
905
906	/* Stick the directory on the front of each name. */
907	if (prefix_array (dirs.gl_pathv[i],
908	&pglob->gl_pathv[old_pathc],
909	pglob->gl_pathc - old_pathc))
910	{
911	globfree (&dirs);
912	globfree (pglob);
913	return GLOB_NOSPACE;
914	}
915	}
916
917	flags \|= GLOB_MAGCHAR;
918
919	/* We have ignored the GLOB_NOCHECK flag in the `glob_in_dir' calls.
920	But if we have not found any matching entry and thie GLOB_NOCHECK
921	flag was set we must return the list consisting of the disrectory
922	names followed by the filename. */
923	if (pglob->gl_pathc == oldcount)
924	{
925	/* No matches. */
926	if (flags & GLOB_NOCHECK)
927	{
928	size_t filename_len = strlen (filename) + 1;
929	char **new_pathv;
930	struct stat st;
931
932	/* This is an pessimistic guess about the size. */
933	pglob->gl_pathv
934	= (char **) realloc (pglob->gl_pathv,
935	(pglob->gl_pathc +
936	((flags & GLOB_DOOFFS) ?
937	pglob->gl_offs : 0) +
938	dirs.gl_pathc + 1) *
939	sizeof (char *));
940	if (pglob->gl_pathv == NULL)
941	{
942	globfree (&dirs);
943	return GLOB_NOSPACE;
944	}
945
946	if (flags & GLOB_DOOFFS)
947	while (pglob->gl_pathc < pglob->gl_offs)
948	pglob->gl_pathv[pglob->gl_pathc++] = NULL;
949
950	for (i = 0; i < dirs.gl_pathc; ++i)
951	{
952	const char *dir = dirs.gl_pathv[i];
953	size_t dir_len = strlen (dir);
954
955	/* First check whether this really is a directory. */
956	if (((flags & GLOB_ALTDIRFUNC)
957	? (*pglob->gl_stat) (dir, &st) : __stat (dir, &st)) != 0
958	\|\| !S_ISDIR (st.st_mode))
959	/* No directory, ignore this entry. */
960	continue;
961
962	pglob->gl_pathv[pglob->gl_pathc] = malloc (dir_len + 1
963	+ filename_len);
964	if (pglob->gl_pathv[pglob->gl_pathc] == NULL)
965	{
966	globfree (&dirs);
967	globfree (pglob);
968	return GLOB_NOSPACE;
969	}
970
971	#ifdef HAVE_MEMPCPY
972	mempcpy (mempcpy (mempcpy (pglob->gl_pathv[pglob->gl_pathc],
973	dir, dir_len),
974	"/", 1),
975	filename, filename_len);
976	#else
977	memcpy (pglob->gl_pathv[pglob->gl_pathc], dir, dir_len);
978	pglob->gl_pathv[pglob->gl_pathc][dir_len] = '/';
979	memcpy (&pglob->gl_pathv[pglob->gl_pathc][dir_len + 1],
980	filename, filename_len);
981	#endif
982	++pglob->gl_pathc;
983	}
984
985	pglob->gl_pathv[pglob->gl_pathc] = NULL;
986	pglob->gl_flags = flags;
987
988	/* Now we know how large the gl_pathv vector must be. */
989	new_pathv = (char **) realloc (pglob->gl_pathv,
990	((pglob->gl_pathc + 1)
991	* sizeof (char *)));
992	if (new_pathv != NULL)
993	pglob->gl_pathv = new_pathv;
994	}
995	else
996	return GLOB_NOMATCH;
997	}
998
999	globfree (&dirs);
1000	}
1001	else
1002	{
1003	status = glob_in_dir (filename, dirname, flags, errfunc, pglob);
1004	if (status != 0)
1005	return status;
1006
1007	if (dirlen > 0)
1008	{
1009	/* Stick the directory on the front of each name. */
1010	int ignore = oldcount;
1011
1012	if ((flags & GLOB_DOOFFS) && ignore < pglob->gl_offs)
1013	ignore = pglob->gl_offs;
1014
1015	if (prefix_array (dirname,
1016	&pglob->gl_pathv[ignore],
1017	pglob->gl_pathc - ignore))
1018	{
1019	globfree (pglob);
1020	return GLOB_NOSPACE;
1021	}
1022	}
1023	}
1024
1025	if (flags & GLOB_MARK)
1026	{
1027	/* Append slashes to directory names. */
1028	int i;
1029	struct stat st;
1030	for (i = oldcount; i < pglob->gl_pathc; ++i)
1031	if (((flags & GLOB_ALTDIRFUNC)
1032	? (*pglob->gl_stat) (pglob->gl_pathv[i], &st)
1033	: __stat (pglob->gl_pathv[i], &st)) == 0
1034	&& S_ISDIR (st.st_mode))
1035	{
1036	size_t len = strlen (pglob->gl_pathv[i]) + 2;
1037	char *new = realloc (pglob->gl_pathv[i], len);
1038	if (new == NULL)
1039	{
1040	globfree (pglob);
1041	return GLOB_NOSPACE;
1042	}
1043	strcpy (&new[len - 2], "/");
1044	pglob->gl_pathv[i] = new;
1045	}
1046	}
1047
1048	if (!(flags & GLOB_NOSORT))
1049	{
1050	/* Sort the vector. */
1051	int non_sort = oldcount;
1052
1053	if ((flags & GLOB_DOOFFS) && pglob->gl_offs > oldcount)
1054	non_sort = pglob->gl_offs;
1055
1056	qsort ((__ptr_t) &pglob->gl_pathv[non_sort],
1057	pglob->gl_pathc - non_sort,
1058	sizeof (char *), collated_compare);
1059	}
1060
1061	return 0;
1062	}
1063
1064
1065	/* Free storage allocated in PGLOB by a previous `glob' call. */
1066	void
1067	globfree (pglob)
1068	register glob_t *pglob;
1069	{
1070	if (pglob->gl_pathv != NULL)
1071	{
1072	register int i;
1073	for (i = 0; i < pglob->gl_pathc; ++i)
1074	if (pglob->gl_pathv[i] != NULL)
1075	free ((__ptr_t) pglob->gl_pathv[i]);
1076	free ((__ptr_t) pglob->gl_pathv);
1077	}
1078	}
1079
1080
1081	/* Do a collated comparison of A and B. */
1082	static int
1083	collated_compare (a, b)
1084	const __ptr_t a;
1085	const __ptr_t b;
1086	{
1087	const char const s1 = (const char const const) a;
1088	const char const s2 = (const char const const) b;
1089
1090	if (s1 == s2)
1091	return 0;
1092	if (s1 == NULL)
1093	return 1;
1094	if (s2 == NULL)
1095	return -1;
1096	return strcoll (s1, s2);
1097	}
1098
1099
1100	/* Prepend DIRNAME to each of N members of ARRAY, replacing ARRAY's
1101	elements in place. Return nonzero if out of memory, zero if successful.
1102	A slash is inserted between DIRNAME and each elt of ARRAY,
1103	unless DIRNAME is just "/". Each old element of ARRAY is freed. */
1104	static int
1105	prefix_array (dirname, array, n)
1106	const char *dirname;
1107	char **array;
1108	size_t n;
1109	{
1110	register size_t i;
1111	size_t dirlen = strlen (dirname);
1112	#if defined __MSDOS__ \|\| defined WINDOWS32
1113	int sep_char = '/';
1114	# define DIRSEP_CHAR sep_char
1115	#else
1116	# define DIRSEP_CHAR '/'
1117	#endif
1118
1119	if (dirlen == 1 && dirname[0] == '/')
1120	/* DIRNAME is just "/", so normal prepending would get us "//foo".
1121	We want "/foo" instead, so don't prepend any chars from DIRNAME. */
1122	dirlen = 0;
1123	#if defined __MSDOS__ \|\| defined WINDOWS32
1124	else if (dirlen > 1)
1125	{
1126	if (dirname[dirlen - 1] == '/' && dirname[dirlen - 2] == ':')
1127	/* DIRNAME is "d:/". Don't prepend the slash from DIRNAME. */
1128	--dirlen;
1129	else if (dirname[dirlen - 1] == ':')
1130	{
1131	/* DIRNAME is "d:". Use `:' instead of `/'. */
1132	--dirlen;
1133	sep_char = ':';
1134	}
1135	}
1136	#endif
1137
1138	for (i = 0; i < n; ++i)
1139	{
1140	size_t eltlen = strlen (array[i]) + 1;
1141	char new = (char ) malloc (dirlen + 1 + eltlen);
1142	if (new == NULL)
1143	{
1144	while (i > 0)
1145	free ((__ptr_t) array[--i]);
1146	return 1;
1147	}
1148
1149	#ifdef HAVE_MEMPCPY
1150	{
1151	char endp = (char ) mempcpy (new, dirname, dirlen);
1152	*endp++ = DIRSEP_CHAR;
1153	mempcpy (endp, array[i], eltlen);
1154	}
1155	#else
1156	memcpy (new, dirname, dirlen);
1157	new[dirlen] = DIRSEP_CHAR;
1158	memcpy (&new[dirlen + 1], array[i], eltlen);
1159	#endif
1160	free ((__ptr_t) array[i]);
1161	array[i] = new;
1162	}
1163
1164	return 0;
1165	}
1166
1167
1168	/* We must not compile this function twice. */
1169	#if !defined _LIBC \|\| !defined NO_GLOB_PATTERN_P
1170	/* Return nonzero if PATTERN contains any metacharacters.
1171	Metacharacters can be quoted with backslashes if QUOTE is nonzero. */
1172	int
1173	__glob_pattern_p (pattern, quote)
1174	const char *pattern;
1175	int quote;
1176	{
1177	register const char *p;
1178	int open = 0;
1179
1180	for (p = pattern; *p != '\0'; ++p)
1181	switch (*p)
1182	{
1183	case '?':
1184	case '*':
1185	return 1;
1186
1187	case '\\':
1188	if (quote && p[1] != '\0')
1189	++p;
1190	break;
1191
1192	case '[':
1193	open = 1;
1194	break;
1195
1196	case ']':
1197	if (open)
1198	return 1;
1199	break;
1200	}
1201
1202	return 0;
1203	}
1204	# ifdef _LIBC
1205	weak_alias (__glob_pattern_p, glob_pattern_p)
1206	# endif
1207	#endif
1208
1209
1210	/* Like `glob', but PATTERN is a final pathname component,
1211	and matches are searched for in DIRECTORY.
1212	The GLOB_NOSORT bit in FLAGS is ignored. No sorting is ever done.
1213	The GLOB_APPEND flag is assumed to be set (always appends). */
1214	static int
1215	glob_in_dir (pattern, directory, flags, errfunc, pglob)
1216	const char *pattern;
1217	const char *directory;
1218	int flags;
1219	int (errfunc) __P ((const char , int));
1220	glob_t *pglob;
1221	{
1222	__ptr_t stream = NULL;
1223
1224	struct globlink
1225	{
1226	struct globlink *next;
1227	char *name;
1228	};
1229	struct globlink *names = NULL;
1230	size_t nfound;
1231	int meta;
1232	int save;
1233
1234	#ifdef VMS
1235	if (*directory == 0)
1236	directory = "[]";
1237	#endif
1238	meta = __glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE));
1239	if (meta == 0)
1240	{
1241	if (flags & (GLOB_NOCHECK\|GLOB_NOMAGIC))
1242	/* We need not do any tests. The PATTERN contains no meta
1243	characters and we must not return an error therefore the
1244	result will always contain exactly one name. */
1245	flags \|= GLOB_NOCHECK;
1246	else
1247	{
1248	/* Since we use the normal file functions we can also use stat()
1249	to verify the file is there. */
1250	struct stat st;
1251	size_t patlen = strlen (pattern);
1252	size_t dirlen = strlen (directory);
1253	char fullname = (char ) __alloca (dirlen + 1 + patlen + 1);
1254
1255	# ifdef HAVE_MEMPCPY
1256	mempcpy (mempcpy (mempcpy (fullname, directory, dirlen),
1257	"/", 1),
1258	pattern, patlen + 1);
1259	# else
1260	memcpy (fullname, directory, dirlen);
1261	fullname[dirlen] = '/';
1262	memcpy (&fullname[dirlen + 1], pattern, patlen + 1);
1263	# endif
1264	if (((flags & GLOB_ALTDIRFUNC)
1265	? (*pglob->gl_stat) (fullname, &st)
1266	: __stat (fullname, &st)) == 0)
1267	/* We found this file to be existing. Now tell the rest
1268	of the function to copy this name into the result. */
1269	flags \|= GLOB_NOCHECK;
1270	}
1271
1272	nfound = 0;
1273	}
1274	else
1275	{
1276	if (pattern[0] == '\0')
1277	{
1278	/* This is a special case for matching directories like in
1279	"a/". /
1280	names = (struct globlink *) __alloca (sizeof (struct globlink));
1281	names->name = (char *) malloc (1);
1282	if (names->name == NULL)
1283	goto memory_error;
1284	names->name[0] = '\0';
1285	names->next = NULL;
1286	nfound = 1;
1287	meta = 0;
1288	}
1289	else
1290	{
1291	stream = ((flags & GLOB_ALTDIRFUNC)
1292	? (*pglob->gl_opendir) (directory)
1293	: (__ptr_t) opendir (directory));
1294	if (stream == NULL)
1295	{
1296	if (errno != ENOTDIR
1297	&& ((errfunc != NULL && (*errfunc) (directory, errno))
1298	\|\| (flags & GLOB_ERR)))
1299	return GLOB_ABORTED;
1300	nfound = 0;
1301	meta = 0;
1302	}
1303	else
1304	{
1305	int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
1306	\| ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
1307	#if defined HAVE_CASE_INSENSITIVE_FS
1308	\| FNM_CASEFOLD
1309	#endif
1310	);
1311	nfound = 0;
1312	flags \|= GLOB_MAGCHAR;
1313
1314	while (1)
1315	{
1316	const char *name;
1317	size_t len;
1318	struct dirent *d = ((flags & GLOB_ALTDIRFUNC)
1319	? (*pglob->gl_readdir) (stream)
1320	: readdir ((DIR *) stream));
1321	if (d == NULL)
1322	break;
1323	if (! REAL_DIR_ENTRY (d))
1324	continue;
1325
1326	#ifdef HAVE_D_TYPE
1327	/* If we shall match only directories use the information
1328	provided by the dirent call if possible. */
1329	if ((flags & GLOB_ONLYDIR)
1330	&& d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
1331	continue;
1332	#endif
1333
1334	name = d->d_name;
1335
1336	if (fnmatch (pattern, name, fnm_flags) == 0)
1337	{
1338	struct globlink new = (struct globlink )
1339	__alloca (sizeof (struct globlink));
1340	len = NAMLEN (d);
1341	new->name = (char *) malloc (len + 1);
1342	if (new->name == NULL)
1343	goto memory_error;
1344	#ifdef HAVE_MEMPCPY
1345	((char ) mempcpy ((__ptr_t) new->name, name, len))
1346	= '\0';
1347	#else
1348	memcpy ((__ptr_t) new->name, name, len);
1349	new->name[len] = '\0';
1350	#endif
1351	new->next = names;
1352	names = new;
1353	++nfound;
1354	}
1355	}
1356	}
1357	}
1358	}
1359
1360	if (nfound == 0 && (flags & GLOB_NOCHECK))
1361	{
1362	size_t len = strlen (pattern);
1363	nfound = 1;
1364	names = (struct globlink *) __alloca (sizeof (struct globlink));
1365	names->next = NULL;
1366	names->name = (char *) malloc (len + 1);
1367	if (names->name == NULL)
1368	goto memory_error;
1369	#ifdef HAVE_MEMPCPY
1370	((char ) mempcpy (names->name, pattern, len)) = '\0';
1371	#else
1372	memcpy (names->name, pattern, len);
1373	names->name[len] = '\0';
1374	#endif
1375	}
1376
1377	if (nfound != 0)
1378	{
1379	pglob->gl_pathv
1380	= (char **) realloc (pglob->gl_pathv,
1381	(pglob->gl_pathc +
1382	((flags & GLOB_DOOFFS) ? pglob->gl_offs : 0) +
1383	nfound + 1) *
1384	sizeof (char *));
1385	if (pglob->gl_pathv == NULL)
1386	goto memory_error;
1387
1388	if (flags & GLOB_DOOFFS)
1389	while (pglob->gl_pathc < pglob->gl_offs)
1390	pglob->gl_pathv[pglob->gl_pathc++] = NULL;
1391
1392	for (; names != NULL; names = names->next)
1393	pglob->gl_pathv[pglob->gl_pathc++] = names->name;
1394	pglob->gl_pathv[pglob->gl_pathc] = NULL;
1395
1396	pglob->gl_flags = flags;
1397	}
1398
1399	save = errno;
1400	if (stream != NULL)
1401	{
1402	if (flags & GLOB_ALTDIRFUNC)
1403	(*pglob->gl_closedir) (stream);
1404	else
1405	closedir ((DIR *) stream);
1406	}
1407	__set_errno (save);
1408
1409	return nfound == 0 ? GLOB_NOMATCH : 0;
1410
1411	memory_error:
1412	{
1413	int save = errno;
1414	if (flags & GLOB_ALTDIRFUNC)
1415	(*pglob->gl_closedir) (stream);
1416	else
1417	closedir ((DIR *) stream);
1418	__set_errno (save);
1419	}
1420	while (names != NULL)
1421	{
1422	if (names->name != NULL)
1423	free ((__ptr_t) names->name);
1424	names = names->next;
1425	}
1426	return GLOB_NOSPACE;
1427	}
1428
1429	#endif /* Not ELIDE_CODE. */

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source: kBuild/trunk/src/gmake/glob/glob.c@ 298

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