diff options
Diffstat (limited to 'sbin/mount_union/mount_union.c')
| -rw-r--r-- | sbin/mount_union/mount_union.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/sbin/mount_union/mount_union.c b/sbin/mount_union/mount_union.c deleted file mode 100644 index d07f427..0000000 --- a/sbin/mount_union/mount_union.c +++ /dev/null @@ -1,160 +0,0 @@ -/* - * Copyright (c) 1992, 1993, 1994 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software donated to Berkeley by - * Jan-Simon Pendry. - * - * 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 const char copyright[] = -"@(#) Copyright (c) 1992, 1993, 1994\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -#if 0 -static char sccsid[] = "@(#)mount_union.c 8.5 (Berkeley) 3/27/94"; -#else -static const char rcsid[] = - "$FreeBSD$"; -#endif -#endif /* not lint */ - -#include <sys/param.h> -#include <sys/mount.h> - -#include <fs/unionfs/union.h> - -#include <err.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sysexits.h> -#include <unistd.h> - -#include "mntopts.h" - -static struct mntopt mopts[] = { - MOPT_STDOPTS, - { NULL } -}; - -static int subdir __P((const char *, const char *)); -static void usage __P((void)) __dead2; - -int -main(argc, argv) - int argc; - char *argv[]; -{ - struct union_args args; - int ch, mntflags; - char source[MAXPATHLEN]; - char target[MAXPATHLEN]; - struct vfsconf vfc; - int error; - - mntflags = 0; - args.mntflags = UNMNT_ABOVE; - while ((ch = getopt(argc, argv, "bo:r")) != -1) - switch (ch) { - case 'b': - args.mntflags &= ~UNMNT_OPMASK; - args.mntflags |= UNMNT_BELOW; - break; - case 'o': - getmntopts(optarg, mopts, &mntflags, 0); - break; - case 'r': - args.mntflags &= ~UNMNT_OPMASK; - args.mntflags |= UNMNT_REPLACE; - break; - case '?': - default: - usage(); - /* NOTREACHED */ - } - argc -= optind; - argv += optind; - - if (argc != 2) - usage(); - - /* resolve both target and source with realpath(3) */ - (void)checkpath(argv[0], target); - (void)checkpath(argv[1], source); - - if (subdir(target, source) || subdir(source, target)) - errx(EX_USAGE, "%s (%s) and %s (%s) are not distinct paths", - argv[0], target, argv[1], source); - - args.target = target; - - error = getvfsbyname("union", &vfc); - if (error && vfsisloadable("union")) { - if (vfsload("union")) - err(EX_OSERR, "vfsload(union)"); - endvfsent(); /* flush cache */ - error = getvfsbyname("union", &vfc); - } - if (error) - errx(EX_OSERR, "union filesystem is not available"); - - if (mount(vfc.vfc_name, source, mntflags, &args)) - err(EX_OSERR, "%s", target); - exit(0); -} - -int -subdir(p, dir) - const char *p; - const char *dir; -{ - int l; - - l = strlen(dir); - if (l <= 1) - return (1); - - if ((strncmp(p, dir, l) == 0) && (p[l] == '/' || p[l] == '\0')) - return (1); - - return (0); -} - -void -usage() -{ - (void)fprintf(stderr, - "usage: mount_union [-br] [-o options] target_fs mount_point\n"); - exit(EX_USAGE); -} |
