[apple/libc.git] / gen / nftw.c

/*	$OpenBSD: nftw.c,v 1.2 2003/07/21 21:15:32 millert Exp $	*/

/*
 * Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Sponsored in part by the Defense Advanced Research Projects
 * Agency (DARPA) and Air Force Research Laboratory, Air Force
 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$OpenBSD: nftw.c,v 1.2 2003/07/21 21:15:32 millert Exp $";
#endif /* LIBC_SCCS and not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fts.h>
#include <ftw.h>
#include <limits.h>

int
nftw(const char *path, int (*fn)(const char *, const struct stat *, int,
     struct FTW *), int nfds, int ftwflags)
{
	const char *paths[2];
	struct FTW ftw;
	FTSENT *cur;
	FTS *ftsp;
	int ftsflags, fnflag, error, postorder, sverrno;

	/* XXX - nfds is currently unused */
	if (nfds < 1 || nfds > OPEN_MAX) {
		errno = EINVAL;
		return (-1);
	}

	ftsflags = FTS_COMFOLLOW;
	if (!(ftwflags & FTW_CHDIR))
		ftsflags |= FTS_NOCHDIR;
	if (ftwflags & FTW_MOUNT)
		ftsflags |= FTS_XDEV;
	if (ftwflags & FTW_PHYS)
		ftsflags |= FTS_PHYSICAL;
	postorder = (ftwflags & FTW_DEPTH) != 0;
	paths[0] = path;
	paths[1] = NULL;
	ftsp = fts_open((char * const *)paths, ftsflags, NULL);
	if (ftsp == NULL)
		return (-1);
	error = 0;
	while ((cur = fts_read(ftsp)) != NULL) {
		switch (cur->fts_info) {
		case FTS_D:
			if (postorder)
				continue;
			fnflag = FTW_D;
			break;
		case FTS_DNR:
			fnflag = FTW_DNR;
			break;
		case FTS_DP:
			if (!postorder)
				continue;
			fnflag = FTW_DP;
			break;
		case FTS_F:
		case FTS_DEFAULT:
			fnflag = FTW_F;
			break;
		case FTS_NS:
		case FTS_NSOK:
			fnflag = FTW_NS;
			break;
		case FTS_SL:
			fnflag = FTW_SL;
			break;
		case FTS_SLNONE:
			fnflag = FTW_SLN;
			break;
		case FTS_DC:
			errno = ELOOP;
			/* FALLTHROUGH */
		default:
			error = -1;
			goto done;
		}
		ftw.base = cur->fts_pathlen - cur->fts_namelen;
		ftw.level = cur->fts_level;
		error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw);
		if (error != 0)
			break;
	}
done:
	sverrno = errno;
	(void) fts_close(ftsp);
	errno = sverrno;
	return (error);
}
Commit	Line	Data
59e0d9fe A	1	/* $OpenBSD: nftw.c,v 1.2 2003/07/21 21:15:32 millert Exp $ */
	2
	3	/*
	4	* Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
	5	*
	6	* Permission to use, copy, modify, and distribute this software for any
	7	* purpose with or without fee is hereby granted, provided that the above
	8	* copyright notice and this permission notice appear in all copies.
	9	*
	10	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	11	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	12	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	13	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	14	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	15	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	16	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	17	*
	18	* Sponsored in part by the Defense Advanced Research Projects
	19	* Agency (DARPA) and Air Force Research Laboratory, Air Force
	20	* Materiel Command, USAF, under agreement number F39502-99-1-0512.
	21	*/
	22
	23	#if defined(LIBC_SCCS) && !defined(lint)
	24	static const char rcsid[] = "$OpenBSD: nftw.c,v 1.2 2003/07/21 21:15:32 millert Exp $";
	25	#endif /* LIBC_SCCS and not lint */
	26
	27	#include <sys/types.h>
	28	#include <sys/stat.h>
	29	#include <errno.h>
	30	#include <fts.h>
	31	#include <ftw.h>
	32	#include <limits.h>
	33
	34	int
	35	nftw(const char path, int (fn)(const char , const struct stat , int,
	36	struct FTW *), int nfds, int ftwflags)
	37	{
	38	const char *paths[2];
	39	struct FTW ftw;
	40	FTSENT *cur;
	41	FTS *ftsp;
	42	int ftsflags, fnflag, error, postorder, sverrno;
	43
	44	/* XXX - nfds is currently unused */
	45	if (nfds < 1 \|\| nfds > OPEN_MAX) {
	46	errno = EINVAL;
	47	return (-1);
	48	}
	49
	50	ftsflags = FTS_COMFOLLOW;
	51	if (!(ftwflags & FTW_CHDIR))
	52	ftsflags \|= FTS_NOCHDIR;
	53	if (ftwflags & FTW_MOUNT)
	54	ftsflags \|= FTS_XDEV;
	55	if (ftwflags & FTW_PHYS)
	56	ftsflags \|= FTS_PHYSICAL;
	57	postorder = (ftwflags & FTW_DEPTH) != 0;
	58	paths[0] = path;
	59	paths[1] = NULL;
	60	ftsp = fts_open((char * const *)paths, ftsflags, NULL);
	61	if (ftsp == NULL)
	62	return (-1);
	63	error = 0;
	64	while ((cur = fts_read(ftsp)) != NULL) {
65	switch (cur->fts_info) {
66	case FTS_D:
67	if (postorder)
68	continue;
69	fnflag = FTW_D;
70	break;
71	case FTS_DNR:
72	fnflag = FTW_DNR;
73	break;
74	case FTS_DP:
75	if (!postorder)
76	continue;
77	fnflag = FTW_DP;
78	break;
79	case FTS_F:
80	case FTS_DEFAULT:
81	fnflag = FTW_F;
82	break;
83	case FTS_NS:
84	case FTS_NSOK:
85	fnflag = FTW_NS;
86	break;
87	case FTS_SL:
88	fnflag = FTW_SL;
89	break;
90	case FTS_SLNONE:
91	fnflag = FTW_SLN;
92	break;
93	case FTS_DC:
94	errno = ELOOP;
95	/* FALLTHROUGH */
96	default:
97	error = -1;
98	goto done;
99	}
100	ftw.base = cur->fts_pathlen - cur->fts_namelen;
101	ftw.level = cur->fts_level;
102	error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw);
103	if (error != 0)
104	break;
105	}
106	done:
107	sverrno = errno;
108	(void) fts_close(ftsp);
109	errno = sverrno;
110	return (error);
111	}