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

/*	$OpenBSD: ftw.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: ftw.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
ftw(const char *path, int (*fn)(const char *, const struct stat *, int),
    int nfds)
{
	const char *paths[2];
	FTSENT *cur;
	FTS *ftsp;
	int fnflag, error, sverrno;

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

	paths[0] = path;
	paths[1] = NULL;
	ftsp = fts_open((char * const *)paths, FTS_COMFOLLOW | FTS_NOCHDIR,
	    NULL);
	if (ftsp == NULL)
		return (-1);
	error = 0;
	while ((cur = fts_read(ftsp)) != NULL) {
		switch (cur->fts_info) {
		case FTS_D:
			fnflag = FTW_D;
			break;
		case FTS_DNR:
			fnflag = FTW_DNR;
			break;
		case FTS_DP:
			/* we only visit in preorder */
			continue;
		case FTS_F:
		case FTS_DEFAULT:
			fnflag = FTW_F;
			break;
		case FTS_NS:
		case FTS_NSOK:
		case FTS_SLNONE:
			fnflag = FTW_NS;
			break;
		case FTS_SL:
			fnflag = FTW_SL;
			break;
		case FTS_DC:
			errno = ELOOP;
			/* FALLTHROUGH */
		default:
			error = -1;
			goto done;
		}
		error = fn(cur->fts_path, cur->fts_statp, fnflag);
		if (error != 0)
			break;
	}
done:
	sverrno = errno;
	(void) fts_close(ftsp);
	errno = sverrno;
	return (error);
}
Commit	Line	Data
59e0d9fe A	1	/* $OpenBSD: ftw.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: ftw.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	ftw(const char path, int (fn)(const char , const struct stat , int),
	36	int nfds)
	37	{
	38	const char *paths[2];
	39	FTSENT *cur;
	40	FTS *ftsp;
	41	int fnflag, error, sverrno;
	42
	43	/* XXX - nfds is currently unused */
	44	if (nfds < 1 \|\| nfds > OPEN_MAX) {
	45	errno = EINVAL;
	46	return (-1);
	47	}
	48
	49	paths[0] = path;
	50	paths[1] = NULL;
	51	ftsp = fts_open((char * const *)paths, FTS_COMFOLLOW \| FTS_NOCHDIR,
	52	NULL);
	53	if (ftsp == NULL)
	54	return (-1);
	55	error = 0;
	56	while ((cur = fts_read(ftsp)) != NULL) {
	57	switch (cur->fts_info) {
	58	case FTS_D:
	59	fnflag = FTW_D;
	60	break;
	61	case FTS_DNR:
	62	fnflag = FTW_DNR;
	63	break;
	64	case FTS_DP:
65	/* we only visit in preorder */
66	continue;
67	case FTS_F:
68	case FTS_DEFAULT:
69	fnflag = FTW_F;
70	break;
71	case FTS_NS:
72	case FTS_NSOK:
73	case FTS_SLNONE:
74	fnflag = FTW_NS;
75	break;
76	case FTS_SL:
77	fnflag = FTW_SL;
78	break;
79	case FTS_DC:
80	errno = ELOOP;
81	/* FALLTHROUGH */
82	default:
83	error = -1;
84	goto done;
85	}
86	error = fn(cur->fts_path, cur->fts_statp, fnflag);
87	if (error != 0)
88	break;
89	}
90	done:
91	sverrno = errno;
92	(void) fts_close(ftsp);
93	errno = sverrno;
94	return (error);
95	}