fd33bfb7f2
function for resolving paths. Make pathadj() no longer warn about symlinks. Symlinks in /dev are regularly used in several places like LVM . The warning was also only visible when calling a mount_* command directly as mount(8) itself would resolve the path witout warning before passing it to a mount_* command.
200 lines
6.1 KiB
C
200 lines
6.1 KiB
C
/* $NetBSD: mount_filecore.c,v 1.21 2020/07/26 08:20:22 mlelstv Exp $ */
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/*
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* Copyright (c) 1992, 1993, 1994 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is contains code contributed to the NetBSD project by
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* Christopher G. Demetriou
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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. 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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* mount_filecore.c 1.1 1998/6/26
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*/
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/*
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* Copyright (c) 1998 Andrew McMurry
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*
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* This code is contains code contributed to the NetBSD project by
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* Christopher G. Demetriou
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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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* mount_filecore.c 1.1 1998/6/26
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\
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The Regents of the University of California.\
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Copyright (c) 1998 Andrew McMurry. All rights reserved.");
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <err.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <util.h>
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#include <filecorefs/filecore_mount.h>
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#include <mntopts.h>
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#include "mountprog.h"
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static const struct mntopt mopts[] = {
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MOPT_STDOPTS,
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MOPT_UPDATE,
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MOPT_GETARGS,
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MOPT_NULL,
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};
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int mount_filecore(int argc, char **argv);
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__dead static void usage(void);
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#ifndef MOUNT_NOMAIN
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int
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main(int argc, char **argv)
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{
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return mount_filecore(argc, argv);
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}
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#endif
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int
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mount_filecore(int argc, char **argv)
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{
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struct filecore_args args;
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int ch, mntflags, opts, useuid;
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char *dev, *dir, canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
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mntoptparse_t mp;
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mntflags = opts = 0;
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useuid = 1;
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args.uid = 0;
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args.gid = 0;
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while ((ch = getopt(argc, argv, "anRfu:g:o:")) != -1)
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switch (ch) {
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case 'a':
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args.flags |= FILECOREMNT_ALLACCESS;
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break;
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case 'n':
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args.flags |= FILECOREMNT_OWNACCESS;
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break;
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case 'R':
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args.flags |= FILECOREMNT_OWNREAD;
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break;
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case 'f':
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args.flags |= FILECOREMNT_FILETYPE;
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break;
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case 'u':
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args.uid = a_uid(optarg);
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useuid = 0;
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break;
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case 'g':
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args.gid = a_gid(optarg);
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useuid = 0;
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break;
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case 'o':
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mp = getmntopts(optarg, mopts, &mntflags, 0);
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if (mp == NULL)
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err(1, "getmntopts");
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freemntopts(mp);
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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 (argc != 2)
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usage();
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pathadj(argv[0], canon_dev);
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dev = canon_dev;
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pathadj(argv[0], canon_dir);
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dir = canon_dir;
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#define DEFAULT_ROOTUID -2
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/*
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* FILECORE filesystems are not writable.
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*/
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mntflags |= MNT_RDONLY;
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if (useuid) args.flags |= FILECOREMNT_USEUID;
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args.fspec = dev;
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args.flags = opts;
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if (mount(MOUNT_FILECORE, dir, mntflags, &args, sizeof args) == -1)
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err(1, "%s on %s", dev, dir);
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if (mntflags & MNT_GETARGS) {
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char buf[1024];
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(void)snprintb(buf, sizeof(buf), FILECOREMNT_BITS, args.flags);
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printf("uid=%d, gid=%d, flags=%s\n", args.uid, args.gid, buf);
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}
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exit(0);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: mount_filecore [-afnR] [-g gid] [-o options] [-u uid] special node\n");
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exit(1);
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}
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