NetBSD/usr.bin/chflags/chflags.c

202 lines
5.0 KiB
C

/* $NetBSD: chflags.c,v 1.16 2011/08/29 14:05:08 joerg Exp $ */
/*
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "from: @(#)chflags.c 8.5 (Berkeley) 4/1/94";
#else
__RCSID("$NetBSD: chflags.c,v 1.16 2011/08/29 14:05:08 joerg Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <fts.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
__dead static void usage(void);
int
main(int argc, char *argv[])
{
FTS *ftsp;
FTSENT *p;
u_long clear, set, newflags;
long val;
int Hflag, Lflag, Rflag, ch, fts_options, hflag, oct, rval;
char *flags, *ep;
int (*change_flags)(const char *, u_long);
Hflag = Lflag = Rflag = hflag = 0;
while ((ch = getopt(argc, argv, "HLPRh")) != -1)
switch (ch) {
case 'H':
Hflag = 1;
Lflag = 0;
break;
case 'L':
Lflag = 1;
Hflag = 0;
break;
case 'P':
Hflag = Lflag = 0;
break;
case 'R':
Rflag = 1;
break;
case 'h':
hflag = 1;
break;
case '?':
default:
usage();
}
argv += optind;
argc -= optind;
if (argc < 2)
usage();
fts_options = FTS_PHYSICAL;
if (Rflag) {
if (Hflag)
fts_options |= FTS_COMFOLLOW;
if (Lflag) {
fts_options &= ~FTS_PHYSICAL;
fts_options |= FTS_LOGICAL;
}
} else if (!hflag)
fts_options |= FTS_COMFOLLOW;
flags = *argv;
if (*flags >= '0' && *flags <= '7') {
errno = 0;
val = strtol(flags, &ep, 8);
if (val < 0)
errno = ERANGE;
if (errno)
err(1, "invalid flags: %s", flags);
if (*ep)
errx(1, "invalid flags: %s", flags);
set = val;
oct = 1;
} else {
if (string_to_flags(&flags, &set, &clear))
errx(1, "invalid flag: %s", flags);
clear = ~clear;
oct = 0;
}
if ((ftsp = fts_open(++argv, fts_options, NULL)) == NULL)
err(1, "fts_open");
for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
change_flags = chflags;
switch (p->fts_info) {
case FTS_D:
if (Rflag) /* Change it at FTS_DP. */
continue;
fts_set(ftsp, p, FTS_SKIP);
break;
case FTS_DNR: /* Warn, chflag, continue. */
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
rval = 1;
break;
case FTS_ERR: /* Warn, continue. */
case FTS_NS:
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
rval = 1;
continue;
case FTS_SL: /* Ignore unless -h. */
/*
* All symlinks we found while doing a physical
* walk end up here.
*/
if (!hflag)
continue;
/*
* Note that if we follow a symlink, fts_info is
* not FTS_SL but FTS_F or whatever. And we should
* use lchflags only for FTS_SL and should use chflags
* for others.
*/
change_flags = lchflags;
break;
case FTS_SLNONE: /* Ignore. */
/*
* The only symlinks that end up here are ones that
* don't point to anything. Note that if we are
* doing a phisycal walk, we never reach here unless
* we asked to follow explicitly.
*/
continue;
default:
break;
}
if (oct)
newflags = set;
else {
newflags = p->fts_statp->st_flags;
newflags |= set;
newflags &= clear;
}
if ((*change_flags)(p->fts_accpath, newflags)) {
warn("%s", p->fts_path);
rval = 1;
}
}
if (errno)
err(1, "fts_read");
exit(rval);
}
static void
usage(void)
{
(void)fprintf(stderr,
"usage: chflags [-R [-H | -L | -P]] [-h] flags file ...\n");
exit(1);
}