diff options
Diffstat (limited to 'bin/chmod/chmod.c')
| -rw-r--r-- | bin/chmod/chmod.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/bin/chmod/chmod.c b/bin/chmod/chmod.c new file mode 100644 index 0000000..f6251a3 --- /dev/null +++ b/bin/chmod/chmod.c @@ -0,0 +1,201 @@ +/* + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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. + */ + +#ifndef lint +static char 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 */ + +#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 __P((void)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + FTS *ftsp; + FTSENT *p; + mode_t *set; + long val; + int oct, omode; + int Hflag, Lflag, Pflag, Rflag, ch, fflag, fts_options, hflag, rval; + char *ep, *mode; + + Hflag = Lflag = Pflag = Rflag = fflag = hflag = 0; + while ((ch = getopt(argc, argv, "HLPRXfgorstuwx")) != EOF) + switch (ch) { + case 'H': + Hflag = 1; + Lflag = Pflag = 0; + break; + case 'L': + Lflag = 1; + Hflag = Pflag = 0; + break; + case 'P': + Pflag = 1; + Hflag = Lflag = 0; + break; + case 'R': + Rflag = 1; + break; + case 'f': /* XXX: undocumented. */ + fflag = 1; + break; + case 'h': + /* + * In System V (and probably POSIX.2) the -h option + * causes chmod to change the mode of the symbolic + * link. 4.4BSD's symbolic links don't have modes, + * so it's an undocumented noop. Do syntax checking, + * though. + */ + 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 < 2) + usage(); + + fts_options = FTS_PHYSICAL; + if (Rflag) { + 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; + } + } + + mode = *argv; + if (*mode >= '0' && *mode <= '7') { + errno = 0; + val = strtol(mode, &ep, 8); + if (val > INT_MAX || val < 0) + errno = ERANGE; + if (errno) + err(1, "invalid file mode: %s", mode); + if (*ep) + errx(1, "invalid file mode: %s", mode); + omode = val; + oct = 1; + } else { + if ((set = setmode(mode)) == NULL) + errx(1, "invalid file mode: %s", mode); + 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: + if (Rflag) /* Change it at FTS_DP. */ + continue; + 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_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. + */ + continue; + default: + break; + } + if (chmod(p->fts_accpath, oct ? omode : + getmode(set, p->fts_statp->st_mode)) && !fflag) { + warn(p->fts_path); + rval = 1; + } + } + if (errno) + err(1, "fts_read"); + exit(rval); +} + +void +usage() +{ + (void)fprintf(stderr, + "usage: chmod [-R [-H | -L | -P]] mode file ...\n"); + exit(1); +} |
