freebsd-dev/bin/chflags/chflags.c
Robert Watson 1b21ffa615 Make chflags(1) more chmod(1)-like (and more feature complete):
- Add -v to print file names as they are processed; -vv prints the flags
  change as well.
- Add -f to ignore failures with the same semantics as chflags(1), neither
  printing an error nor affecting the return code.
- Don't try to set the flags if they won't change.

I made minor cosmetic tweaks to the code in the patch.

MFC after:	1 week
PR:		112827
Submitted by:	Ighighi <ighighi at gmail.com>
2008-03-09 12:10:24 +00:00

206 lines
5.1 KiB
C

/*-
* 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.
* 4. 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.
*/
#if 0
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1992, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
static char sccsid[] = "@(#)chflags.c 8.5 (Berkeley) 4/1/94";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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>
void usage(void);
int
main(int argc, char *argv[])
{
FTS *ftsp;
FTSENT *p;
u_long clear, newflags, set;
long val;
int Hflag, Lflag, Rflag, fflag, hflag, vflag;
int ch, fts_options, oct, rval;
char *flags, *ep;
int (*change_flags)(const char *, unsigned long);
Hflag = Lflag = Rflag = fflag = hflag = vflag = 0;
while ((ch = getopt(argc, argv, "HLPRfhv")) != -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 'f':
fflag = 1;
break;
case 'h':
hflag = 1;
break;
case 'v':
vflag++;
break;
case '?':
default:
usage();
}
argv += optind;
argc -= optind;
if (argc < 2)
usage();
if (Rflag) {
fts_options = FTS_PHYSICAL;
if (hflag)
errx(1, "the -R and -h options "
"may not be specified together");
if (Hflag)
fts_options |= FTS_COMFOLLOW;
if (Lflag) {
fts_options &= ~FTS_PHYSICAL;
fts_options |= FTS_LOGICAL;
}
} else
fts_options = FTS_LOGICAL;
/* XXX: Why don't chflags and lchflags have compatible prototypes? */
if (hflag)
change_flags = (int (*)(const char *, unsigned long))lchflags;
else
change_flags = chflags;
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 (strtofflags(&flags, &set, &clear))
errx(1, "invalid flag: %s", flags);
clear = ~clear;
oct = 0;
}
if ((ftsp = fts_open(++argv, fts_options , 0)) == NULL)
err(1, NULL);
for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
switch (p->fts_info) {
case FTS_D: /* Change it at FTS_DP if we're recursive. */
if (!Rflag)
fts_set(ftsp, p, FTS_SKIP);
continue;
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. */
case FTS_SLNONE:
/*
* The only symlinks that end up here are ones that
* don't point to anything and ones that we found
* doing a physical walk.
*/
if (!hflag)
continue;
/* FALLTHROUGH */
default:
break;
}
if (oct)
newflags = set;
else
newflags = (p->fts_statp->st_flags | set) & clear;
if (newflags == p->fts_statp->st_flags)
continue;
if ((*change_flags)(p->fts_accpath, newflags) && !fflag) {
warn("%s", p->fts_path);
rval = 1;
} else if (vflag) {
(void)printf("%s", p->fts_path);
if (vflag > 1)
(void)printf(": 0%lo -> 0%lo",
(u_long)p->fts_statp->st_flags,
newflags);
(void)printf("\n");
}
}
if (errno)
err(1, "fts_read");
exit(rval);
}
void
usage(void)
{
(void)fprintf(stderr,
"usage: chflags [-fhv] [-R [-H | -L | -P]] flags file ...\n");
exit(1);
}