b63c54893f
with Bruce again. Reported by: bde
199 lines
5.0 KiB
C
199 lines
5.0 KiB
C
/*
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* Copyright (c) 1983, 1992, 1993
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifndef lint
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static char const copyright[] =
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"@(#) Copyright (c) 1983, 1992, 1993\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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#if 0
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static char sccsid[] = "@(#)mkdir.c 8.2 (Berkeley) 1/25/94";
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#endif
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static const char rcsid[] =
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"$Id: mkdir.c,v 1.13 1998/10/20 08:04:15 msmith Exp $";
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#endif /* not lint */
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#include <sys/types.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 <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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int build __P((char *, mode_t));
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void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch, exitval, success, omode, pflag;
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mode_t *set = (mode_t *)NULL;
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char *mode;
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omode = pflag = 0;
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mode = NULL;
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while ((ch = getopt(argc, argv, "m:p")) != -1)
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switch(ch) {
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case 'p':
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pflag = 1;
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break;
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case 'm':
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mode = optarg;
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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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argc -= optind;
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argv += optind;
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if (argv[0] == NULL)
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usage();
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if (mode == NULL) {
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omode = S_IRWXU | S_IRWXG | S_IRWXO;
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} else {
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if ((set = setmode(mode)) == NULL)
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errx(1, "invalid file mode: %s", mode);
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omode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO);
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}
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for (exitval = 0; *argv != NULL; ++argv) {
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success = 1;
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if (pflag) {
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if (build(*argv, omode))
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success = 0;
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} else if (mkdir(*argv, omode) < 0) {
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warn("%s", *argv);
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success = 0;
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}
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if (!success)
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exitval = 1;
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/*
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* The mkdir() and umask() calls both honor only the low
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* nine bits, so if you try to set a mode including the
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* sticky, setuid, setgid bits you lose them. Don't do
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* this unless the user has specifically requested a mode,
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* as chmod will (obviously) ignore the umask.
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*/
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if (success && mode != NULL && chmod(*argv, omode) == -1) {
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warn("%s", *argv);
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exitval = 1;
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}
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}
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exit(exitval);
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}
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int
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build(path, omode)
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char *path;
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mode_t omode;
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{
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struct stat sb;
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mode_t numask, oumask;
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int first, last, retval;
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char *p;
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p = path;
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oumask = 0;
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retval = 0;
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if (p[0] == '/') /* Skip leading '/'. */
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++p;
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for (first = 1, last = 0; !last ; ++p) {
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if (p[0] == '\0')
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last = 1;
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else if (p[0] != '/')
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continue;
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*p = '\0';
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if (p[1] == '\0')
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last = 1;
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if (first) {
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/*
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* POSIX 1003.2:
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* For each dir operand that does not name an existing
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* directory, effects equivalent to those cased by the
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* following command shall occcur:
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*
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* mkdir -p -m $(umask -S),u+wx $(dirname dir) &&
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* mkdir [-m mode] dir
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*
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* We change the user's umask and then restore it,
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* instead of doing chmod's.
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*/
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oumask = umask(0);
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numask = oumask & ~(S_IWUSR | S_IXUSR);
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(void)umask(numask);
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first = 0;
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}
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if (last)
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(void)umask(oumask);
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if (stat(path, &sb)) {
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if (errno != ENOENT ||
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mkdir(path, last ? omode :
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S_IRWXU | S_IRWXG | S_IRWXO) < 0) {
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warn("%s", path);
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retval = 1;
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break;
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}
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}
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else if ((sb.st_mode & S_IFMT) != S_IFDIR) {
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if (last)
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errno = EEXIST;
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else
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errno = ENOTDIR;
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warn("%s", path);
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retval = 1;
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break;
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}
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if (!last)
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*p = '/';
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}
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if (!first && !last)
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(void)umask(oumask);
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return (retval);
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}
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void
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usage()
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{
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(void)fprintf(stderr, "usage: mkdir [-p] [-m mode] directory ...\n");
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exit (1);
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}
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