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3fa88dec7f
most common cd9660 and nfs options like God intended them. (It is now possible to say mount -o ro,soft,bg,intr there:/foo/bar /foo/bar again.) This whole getmntopt() business is an incredible botch; it never should have been anything more than a wrapper around getsubopt(3). Because if the way the current hackaround is implemented, options which take arguments (like the old `rsize' and `wsize') are still unavailable, and must be accessed the new, broken way. (It's unimaginable how Berkeley managed to screw up one of the few things about NFS that Sun actually got right to begin with!)
209 lines
4.8 KiB
C
209 lines
4.8 KiB
C
/*
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* Copyright (c) 1994 Christopher G. Demetriou
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* 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 Christopher G. Demetriou.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lint
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static char rcsid[] = "$Id: mount_msdos.c,v 1.2 1994/09/22 22:16:35 wollman Exp $";
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#endif /* not lint */
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#define MSDOSFS
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <ctype.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 <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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#include "mntopts.h"
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struct mntopt mopts[] = {
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MOPT_STDOPTS,
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{ NULL }
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};
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gid_t a_gid __P((char *));
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uid_t a_uid __P((char *));
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mode_t a_mask __P((char *));
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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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struct msdosfs_args args;
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struct stat sb;
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int c, mntflags, set_gid, set_uid, set_mask;
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char *dev, *dir, ndir[MAXPATHLEN+1];
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struct vfsconf *vfc;
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mntflags = set_gid = set_uid = set_mask = 0;
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(void)memset(&args, '\0', sizeof(args));
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while ((c = getopt(argc, argv, "u:g:m:o:")) != EOF) {
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switch (c) {
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case 'u':
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args.uid = a_uid(optarg);
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set_uid = 1;
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break;
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case 'g':
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args.gid = a_gid(optarg);
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set_gid = 1;
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break;
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case 'm':
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args.mask = a_mask(optarg);
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set_mask = 1;
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break;
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case 'o':
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getmntopts(optarg, mopts, &mntflags, 0);
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break;
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case '?':
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default:
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usage();
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break;
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}
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}
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if (optind + 2 != argc)
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usage();
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dev = argv[optind];
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dir = argv[optind + 1];
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if (dir[0] != '/') {
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warnx("\"%s\" is a relative path.", dir);
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if (getcwd(ndir, sizeof(ndir)) == NULL)
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err(1, "getcwd");
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strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1);
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strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1);
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dir = ndir;
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warnx("using \"%s\" instead.", dir);
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}
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args.fspec = dev;
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args.export.ex_root = -2; /* unchecked anyway on DOS fs */
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if (mntflags & MNT_RDONLY)
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args.export.ex_flags = MNT_EXRDONLY;
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else
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args.export.ex_flags = 0;
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if (!set_gid || !set_uid || !set_mask) {
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if (stat(dir, &sb) == -1)
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err(1, "stat %s", dir);
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if (!set_uid)
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args.uid = sb.st_uid;
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if (!set_gid)
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args.gid = sb.st_gid;
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if (!set_mask)
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args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
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}
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vfc = getvfsbyname("msdos");
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if(!vfc && vfsisloadable("msdos")) {
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if(vfsload("msdos"))
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err(1, "vfsload(msdos)");
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endvfsent(); /* clear cache */
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vfc = getvfsbyname("msdos");
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}
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if (mount(vfc ? vfc->vfc_index : MOUNT_MSDOS, dir, mntflags, &args) < 0)
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err(1, "mount");
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exit (0);
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}
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gid_t
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a_gid(s)
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char *s;
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{
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struct group *gr;
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char *gname;
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gid_t gid;
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if ((gr = getgrnam(s)) != NULL)
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gid = gr->gr_gid;
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else {
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for (gname = s; *s && isdigit(*s); ++s);
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if (!*s)
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gid = atoi(gname);
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else
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errx(1, "unknown group id: %s", gname);
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}
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return (gid);
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}
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uid_t
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a_uid(s)
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char *s;
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{
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struct passwd *pw;
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char *uname;
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uid_t uid;
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if ((pw = getpwnam(s)) != NULL)
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uid = pw->pw_uid;
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else {
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for (uname = s; *s && isdigit(*s); ++s);
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if (!*s)
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uid = atoi(uname);
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else
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errx(1, "unknown user id: %s", uname);
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}
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return (uid);
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}
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mode_t
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a_mask(s)
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char *s;
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{
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int done, rv;
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char *ep;
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done = 0;
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if (*s >= '0' && *s <= '7') {
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done = 1;
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rv = strtol(optarg, &ep, 8);
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}
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if (!done || rv < 0 || *ep)
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errx(1, "invalid file mode: %s", s);
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return (rv);
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}
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void
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usage()
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{
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fprintf(stderr, "usage: mount_msdos [-F flags] [-u user] [-g group] [-m mask] bdev dir\n");
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exit(1);
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}
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