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/* $OpenBSD: nftw.c,v 1.1 2003/07/21 20:17:53 millert Exp $ */
/*
* Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$OpenBSD: nftw.c,v 1.1 2003/07/21 20:17:53 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);
}
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