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File: [cvs.NetBSD.org] / src / bin / mkdir / mkdir.c (download)

Revision 1.38, Mon Aug 29 14:45:28 2011 UTC (9 years, 2 months ago) by joerg
Branch: MAIN
CVS Tags: yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb8-mediatek-base, matt-nb8-mediatek, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, localcount-20160914, khorben-n900, is-mlppp-base, is-mlppp, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, agc-symver-base, agc-symver, HEAD
Branch point for: phil-wifi
Changes since 1.37: +6 -7 lines

static + __dead

/* $NetBSD: mkdir.c,v 1.38 2011/08/29 14:45:28 joerg Exp $ */

/*
 * Copyright (c) 1983, 1992, 1993
 *	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) 1983, 1992, 1993\
 The Regents of the University of California.  All rights reserved.");
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)mkdir.c	8.2 (Berkeley) 1/25/94";
#else
__RCSID("$NetBSD: mkdir.c,v 1.38 2011/08/29 14:45:28 joerg Exp $");
#endif
#endif /* not lint */

#include <sys/param.h>
#include <sys/stat.h>
#include <sys/types.h>

#include <err.h>
#include <errno.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

static int		mkpath(char *, mode_t, mode_t);
__dead static void	usage(void);

int
main(int argc, char *argv[])
{
	int ch, exitval, pflag;
	void *set;
	mode_t mode, dir_mode;

	setprogname(argv[0]);
	(void)setlocale(LC_ALL, "");

	/*
	 * The default file mode is a=rwx (0777) with selected permissions
	 * removed in accordance with the file mode creation mask.  For
	 * intermediate path name components, the mode is the default modified
	 * by u+wx so that the subdirectories can always be created.
	 */
	mode = (S_IRWXU | S_IRWXG | S_IRWXO) & ~umask(0);
	dir_mode = mode | S_IWUSR | S_IXUSR;

	pflag = 0;
	while ((ch = getopt(argc, argv, "m:p")) != -1)
		switch (ch) {
		case 'p':
			pflag = 1;
			break;
		case 'm':
			if ((set = setmode(optarg)) == NULL) {
				err(EXIT_FAILURE, "Cannot set file mode `%s'",
				    optarg);
				/* NOTREACHED */
			}
			mode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO);
			free(set);
			break;
		case '?':
		default:
			usage();
			/* NOTREACHED */
		}
	argc -= optind;
	argv += optind;

	if (*argv == NULL) {
		usage();
		/* NOTREACHED */
	}

	for (exitval = EXIT_SUCCESS; *argv != NULL; ++argv) {
#ifdef notdef
		char *slash;

		/* Kernel takes care of this */
		/* Remove trailing slashes, per POSIX. */
		slash = strrchr(*argv, '\0');
		while (--slash > *argv && *slash == '/')
			*slash = '\0';
#endif

		if (pflag) {
			if (mkpath(*argv, mode, dir_mode) < 0)
				exitval = EXIT_FAILURE;
		} else {
			if (mkdir(*argv, mode) < 0) {
				warn("%s", *argv);
				exitval = EXIT_FAILURE;
			} else {
				/*
				 * The mkdir() and umask() calls both honor
				 * only the file permission bits, so if you try
				 * to set a mode including the sticky, setuid,
				 * setgid bits you lose them. So chmod().
				 */
				if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) != 0 &&
				    chmod(*argv, mode) == -1) {
					warn("%s", *argv);
					exitval = EXIT_FAILURE;
				}
			}
		}
	}
	exit(exitval);
	/* NOTREACHED */
}

/*
 * mkpath -- create directories.
 *	path     - path
 *	mode     - file mode of terminal directory
 *	dir_mode - file mode of intermediate directories
 */
static int
mkpath(char *path, mode_t mode, mode_t dir_mode)
{
	struct stat sb;
	char *slash;
	int done, rv;

	done = 0;
	slash = path;

	for (;;) {
		slash += strspn(slash, "/");
		slash += strcspn(slash, "/");

		done = (*slash == '\0');
		*slash = '\0';

		rv = mkdir(path, done ? mode : dir_mode);
		if (rv < 0) {
			/*
			 * Can't create; path exists or no perms.
			 * stat() path to determine what's there now.
			 */
			int	sverrno;

			sverrno = errno;
			if (stat(path, &sb) < 0) {
					/* Not there; use mkdir()s error */
				errno = sverrno;
				warn("%s", path);
				return -1;
			}
			if (!S_ISDIR(sb.st_mode)) {
					/* Is there, but isn't a directory */
				errno = ENOTDIR;
				warn("%s", path);
				return -1;
			}
		} else if (done) {
			/*
			 * Created ok, and this is the last element
			 */
			/*
			 * The mkdir() and umask() calls both honor only the
			 * file permission bits, so if you try to set a mode
			 * including the sticky, setuid, setgid bits you lose
			 * them. So chmod().
			 */
			if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) != 0 &&
			    chmod(path, mode) == -1) {
				warn("%s", path);
				return -1;
			}
		}

		if (done) {
			break;
		}
		*slash = '/';
	}

	return 0;
}

static void
usage(void)
{

	(void)fprintf(stderr, "usage: %s [-p] [-m mode] dirname ...\n",
	    getprogname());
	exit(EXIT_FAILURE);
	/* NOTREACHED */
}