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/*- |
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* SPDX-License-Identifier: BSD-3-Clause |
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* |
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* Copyright (c) 1989, 1993, 1994 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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|
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#if 0 |
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#ifndef lint |
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static char const copyright[] = |
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"@(#) Copyright (c) 1989, 1993, 1994\n\ |
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The Regents of the University of California. All rights reserved.\n"; |
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#endif /* not lint */ |
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|
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#ifndef lint |
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static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; |
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#endif /* not lint */ |
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#endif |
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#include <sys/cdefs.h> |
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__FBSDID("$FreeBSD$"); |
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|
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#include <sys/param.h> |
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#include <sys/stat.h> |
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|
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#include <err.h> |
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#include <errno.h> |
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#include <fcntl.h> |
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#include <fts.h> |
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#include <limits.h> |
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#include <signal.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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|
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static volatile sig_atomic_t siginfo; |
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|
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static void usage(void); |
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static int may_have_nfs4acl(const FTSENT *ent, int hflag); |
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|
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static void |
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siginfo_handler(int sig __unused) |
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{ |
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|
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siginfo = 1; |
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} |
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|
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int |
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main(int argc, char *argv[]) |
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{ |
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FTS *ftsp; |
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FTSENT *p; |
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mode_t *set; |
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int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval; |
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int vflag; |
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char *mode; |
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mode_t newmode; |
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|
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set = NULL; |
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Hflag = Lflag = Rflag = fflag = hflag = vflag = 0; |
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while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -1) |
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switch (ch) { |
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case 'H': |
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Hflag = 1; |
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Lflag = 0; |
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break; |
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case 'L': |
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Lflag = 1; |
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Hflag = 0; |
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break; |
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case 'P': |
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Hflag = Lflag = 0; |
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break; |
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case 'R': |
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Rflag = 1; |
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break; |
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case 'f': |
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fflag = 1; |
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break; |
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case 'h': |
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/* |
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* In System V the -h option causes chmod to change |
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* the mode of the symbolic link. 4.4BSD's symbolic |
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* links didn't have modes, so it was an undocumented |
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* noop. In FreeBSD 3.0, lchmod(2) is introduced and |
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* this option does real work. |
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*/ |
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hflag = 1; |
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break; |
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/* |
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* XXX |
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* "-[rwx]" are valid mode commands. If they are the entire |
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* argument, getopt has moved past them, so decrement optind. |
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* Regardless, we're done argument processing. |
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*/ |
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case 'g': case 'o': case 'r': case 's': |
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case 't': case 'u': case 'w': case 'X': case 'x': |
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if (argv[optind - 1][0] == '-' && |
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argv[optind - 1][1] == ch && |
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argv[optind - 1][2] == '\0') |
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--optind; |
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goto done; |
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case 'v': |
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vflag++; |
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break; |
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case '?': |
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default: |
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usage(); |
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} |
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done: argv += optind; |
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argc -= optind; |
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|
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if (argc < 2) |
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usage(); |
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|
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(void)signal(SIGINFO, siginfo_handler); |
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|
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if (Rflag) { |
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if (hflag) |
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errx(1, "the -R and -h options may not be " |
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"specified together."); |
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if (Lflag) { |
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fts_options = FTS_LOGICAL; |
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} else { |
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fts_options = FTS_PHYSICAL; |
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|
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if (Hflag) { |
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fts_options |= FTS_COMFOLLOW; |
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} |
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} |
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} else if (hflag) { |
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fts_options = FTS_PHYSICAL; |
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} else { |
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fts_options = FTS_LOGICAL; |
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} |
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|
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mode = *argv; |
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if ((set = setmode(mode)) == NULL) |
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errx(1, "invalid file mode: %s", mode); |
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|
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if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) |
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err(1, "fts_open"); |
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for (rval = 0; (p = fts_read(ftsp)) != NULL;) { |
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int atflag; |
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|
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if ((fts_options & FTS_LOGICAL) || |
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((fts_options & FTS_COMFOLLOW) && |
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p->fts_level == FTS_ROOTLEVEL)) |
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atflag = 0; |
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else |
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atflag = AT_SYMLINK_NOFOLLOW; |
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|
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switch (p->fts_info) { |
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case FTS_D: |
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if (!Rflag) |
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fts_set(ftsp, p, FTS_SKIP); |
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break; |
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case FTS_DNR: /* Warn, chmod. */ |
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warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); |
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rval = 1; |
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break; |
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case FTS_DP: /* Already changed at FTS_D. */ |
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continue; |
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case FTS_ERR: /* Warn, continue. */ |
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case FTS_NS: |
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warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); |
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rval = 1; |
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continue; |
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default: |
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break; |
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} |
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newmode = getmode(set, p->fts_statp->st_mode); |
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/* |
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* With NFSv4 ACLs, it is possible that applying a mode |
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* identical to the one computed from an ACL will change |
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* that ACL. |
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*/ |
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if (may_have_nfs4acl(p, hflag) == 0 && |
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(newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS)) |
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continue; |
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if (fchmodat(AT_FDCWD, p->fts_accpath, newmode, atflag) == -1 |
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&& !fflag) { |
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warn("%s", p->fts_path); |
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rval = 1; |
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} else if (vflag || siginfo) { |
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(void)printf("%s", p->fts_path); |
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|
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if (vflag > 1 || siginfo) { |
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char m1[12], m2[12]; |
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|
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strmode(p->fts_statp->st_mode, m1); |
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strmode((p->fts_statp->st_mode & |
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S_IFMT) | newmode, m2); |
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(void)printf(": 0%o [%s] -> 0%o [%s]", |
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p->fts_statp->st_mode, m1, |
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(p->fts_statp->st_mode & S_IFMT) | |
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newmode, m2); |
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} |
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(void)printf("\n"); |
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siginfo = 0; |
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} |
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} |
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if (errno) |
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err(1, "fts_read"); |
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exit(rval); |
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} |
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|
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static void |
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usage(void) |
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{ |
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(void)fprintf(stderr, |
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"usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n"); |
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exit(1); |
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} |
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|
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static int |
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may_have_nfs4acl(const FTSENT *ent, int hflag) |
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{ |
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int ret; |
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static dev_t previous_dev = NODEV; |
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static int supports_acls = -1; |
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|
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if (previous_dev != ent->fts_statp->st_dev) { |
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previous_dev = ent->fts_statp->st_dev; |
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supports_acls = 0; |
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|
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if (hflag) |
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ret = lpathconf(ent->fts_accpath, _PC_ACL_NFS4); |
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else |
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ret = pathconf(ent->fts_accpath, _PC_ACL_NFS4); |
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if (ret > 0) |
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supports_acls = 1; |
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else if (ret < 0 && errno != EINVAL) |
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warn("%s", ent->fts_path); |
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} |
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|
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return (supports_acls); |
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} |
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