diff options
Diffstat (limited to 'bin/chmod/chmod.c')
| -rw-r--r-- | bin/chmod/chmod.c | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/bin/chmod/chmod.c b/bin/chmod/chmod.c new file mode 100644 index 0000000..c10101e --- /dev/null +++ b/bin/chmod/chmod.c @@ -0,0 +1,239 @@ +/* $NetBSD: chmod.c,v 1.38 2012/10/22 18:00:46 christos Exp $ */ + +/* + * 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. + */ + +#include <sys/cdefs.h> +#ifndef lint +__COPYRIGHT( +"@(#) Copyright (c) 1989, 1993, 1994\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94"; +#else +__RCSID("$NetBSD: chmod.c,v 1.38 2012/10/22 18:00:46 christos Exp $"); +#endif +#endif /* not lint */ + +#include <sys/param.h> +#include <sys/stat.h> +#include <sys/types.h> + +#include <err.h> +#include <errno.h> +#include <fts.h> +#include <limits.h> +#include <locale.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <getopt.h> + +__dead static void usage(void); + +struct option chmod_longopts[] = { + { "reference", required_argument, 0, + 1 }, + { NULL, 0, 0, + 0 }, +}; + +int +main(int argc, char *argv[]) +{ + FTS *ftsp; + FTSENT *p; + void *set; + mode_t mval; + int Hflag, Lflag, Rflag, ch, fflag, fts_options, hflag, rval; + char *mode, *reference; + int (*change_mode)(const char *, mode_t); + + setprogname(argv[0]); + (void)setlocale(LC_ALL, ""); + + Hflag = Lflag = Rflag = fflag = hflag = 0; + reference = NULL; + while ((ch = getopt_long(argc, argv, "HLPRXfghorstuwx", + chmod_longopts, NULL)) != -1) + switch (ch) { + case 1: + reference = optarg; + break; + 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 NetBSD + * 1.3, 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 '?': + default: + usage(); + } +done: argv += optind; + argc -= optind; + + if (argc == 0 || (argc == 1 && reference == NULL)) + usage(); + + fts_options = FTS_PHYSICAL; + if (Rflag) { + if (hflag) { + errx(EXIT_FAILURE, + "the -R and -h options may not be specified together."); + /* NOTREACHED */ + } + if (Hflag) + fts_options |= FTS_COMFOLLOW; + if (Lflag) { + fts_options &= ~FTS_PHYSICAL; + fts_options |= FTS_LOGICAL; + } + } else if (!hflag) + fts_options |= FTS_COMFOLLOW; + if (hflag) + change_mode = lchmod; + else + change_mode = chmod; + + if (reference == NULL) { + mode = *argv++; + if ((set = setmode(mode)) == NULL) { + err(EXIT_FAILURE, "Cannot set file mode `%s'", mode); + /* NOTREACHED */ + } + mval = 0; + } else { + struct stat st; + + if (stat(reference, &st) == -1) + err(EXIT_FAILURE, "Cannot stat `%s'", reference); + mval = st.st_mode; + set = NULL; + } + + if ((ftsp = fts_open(argv, fts_options, 0)) == NULL) { + err(EXIT_FAILURE, "fts_open"); + /* NOTREACHED */ + } + for (rval = 0; (p = fts_read(ftsp)) != NULL;) { + switch (p->fts_info) { + case FTS_D: + if (!Rflag) + (void)fts_set(ftsp, p, FTS_SKIP); + break; + case FTS_DNR: /* Warn, chmod, continue. */ + 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; + 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; + /* else */ + /* FALLTHROUGH */ + default: + break; + } + if ((*change_mode)(p->fts_accpath, + set ? getmode(set, p->fts_statp->st_mode) : mval) + && !fflag) { + warn("%s", p->fts_path); + rval = 1; + } + } + if (errno) { + err(EXIT_FAILURE, "fts_read"); + /* NOTREACHED */ + } + exit(rval); + /* NOTREACHED */ +} + +static void +usage(void) +{ + (void)fprintf(stderr, + "Usage: %s [-R [-H | -L | -P]] [-fh] mode file ...\n" + "\t%s [-R [-H | -L | -P]] [-fh] --reference=rfile file ...\n", + getprogname(), getprogname()); + exit(1); + /* NOTREACHED */ +} |