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Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
263 lines
6.5 KiB
C
263 lines
6.5 KiB
C
/*-
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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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#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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#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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#include <sys/param.h>
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#include <sys/stat.h>
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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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static volatile sig_atomic_t siginfo;
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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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static void
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siginfo_handler(int sig __unused)
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{
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siginfo = 1;
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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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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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if (argc < 2)
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usage();
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(void)signal(SIGINFO, siginfo_handler);
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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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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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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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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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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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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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if (vflag > 1 || siginfo) {
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char m1[12], m2[12];
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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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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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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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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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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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return (supports_acls);
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}
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