/*- * Copyright (c) 1989, 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. */ #if 0 #ifndef lint static char const copyright[] = "@(#) Copyright (c) 1989, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; #endif /* not lint */ #endif #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include static volatile sig_atomic_t siginfo; static void usage(void); static int may_have_nfs4acl(const FTSENT *ent, int hflag); static void siginfo_handler(int sig __unused) { siginfo = 1; } int main(int argc, char *argv[]) { FTS *ftsp; FTSENT *p; mode_t *set; int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval; int vflag; char *mode; mode_t newmode; set = NULL; Hflag = Lflag = Rflag = fflag = hflag = vflag = 0; while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -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': /* * In System V the -h option causes chmod to change * the mode of the symbolic link. 4.4BSD's symbolic * links didn't have modes, so it was an undocumented * noop. In FreeBSD 3.0, lchmod(2) is introduced and * this option does real work. */ hflag = 1; break; /* * XXX * "-[rwx]" are valid mode commands. If they are the entire * argument, getopt has moved past them, so decrement optind. * Regardless, we're done argument processing. */ case 'g': case 'o': case 'r': case 's': case 't': case 'u': case 'w': case 'X': case 'x': if (argv[optind - 1][0] == '-' && argv[optind - 1][1] == ch && argv[optind - 1][2] == '\0') --optind; goto done; case 'v': vflag++; break; case '?': default: usage(); } done: argv += optind; argc -= optind; if (argc < 2) usage(); (void)signal(SIGINFO, siginfo_handler); if (Rflag) { if (hflag) errx(1, "the -R and -h options may not be " "specified together."); if (Lflag) { fts_options = FTS_LOGICAL; } else { fts_options = FTS_PHYSICAL; if (Hflag) { fts_options |= FTS_COMFOLLOW; } } } else if (hflag) { fts_options = FTS_PHYSICAL; } else { fts_options = FTS_LOGICAL; } mode = *argv; if ((set = setmode(mode)) == NULL) errx(1, "invalid file mode: %s", mode); if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) err(1, "fts_open"); for (rval = 0; (p = fts_read(ftsp)) != NULL;) { int atflag; if ((fts_options & FTS_LOGICAL) || ((fts_options & FTS_COMFOLLOW) && p->fts_level == FTS_ROOTLEVEL)) atflag = 0; else atflag = AT_SYMLINK_NOFOLLOW; switch (p->fts_info) { case FTS_D: if (!Rflag) fts_set(ftsp, p, FTS_SKIP); break; case FTS_DNR: /* Warn, chmod. */ warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); rval = 1; break; case FTS_DP: /* Already changed at FTS_D. */ continue; case FTS_ERR: /* Warn, continue. */ case FTS_NS: warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); rval = 1; continue; default: break; } newmode = getmode(set, p->fts_statp->st_mode); /* * With NFSv4 ACLs, it is possible that applying a mode * identical to the one computed from an ACL will change * that ACL. */ if (may_have_nfs4acl(p, hflag) == 0 && (newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS)) continue; if (fchmodat(AT_FDCWD, p->fts_accpath, newmode, atflag) == -1 && !fflag) { warn("%s", p->fts_path); rval = 1; } else if (vflag || siginfo) { (void)printf("%s", p->fts_path); if (vflag > 1 || siginfo) { char m1[12], m2[12]; strmode(p->fts_statp->st_mode, m1); strmode((p->fts_statp->st_mode & S_IFMT) | newmode, m2); (void)printf(": 0%o [%s] -> 0%o [%s]", p->fts_statp->st_mode, m1, (p->fts_statp->st_mode & S_IFMT) | newmode, m2); } (void)printf("\n"); siginfo = 0; } } if (errno) err(1, "fts_read"); exit(rval); } static void usage(void) { (void)fprintf(stderr, "usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n"); exit(1); } static int may_have_nfs4acl(const FTSENT *ent, int hflag) { int ret; static dev_t previous_dev = NODEV; static int supports_acls = -1; if (previous_dev != ent->fts_statp->st_dev) { previous_dev = ent->fts_statp->st_dev; supports_acls = 0; if (hflag) ret = lpathconf(ent->fts_accpath, _PC_ACL_NFS4); else ret = pathconf(ent->fts_accpath, _PC_ACL_NFS4); if (ret > 0) supports_acls = 1; else if (ret < 0 && errno != EINVAL) warn("%s", ent->fts_path); } return (supports_acls); }