340 lines
8.3 KiB
C
340 lines
8.3 KiB
C
/* $NetBSD: mount_msdos.c,v 1.18 1997/09/16 12:24:18 lukem Exp $ */
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/*
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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 const char rcsid[] =
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"$FreeBSD$";
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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 <sys/stat.h>
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#include <fs/msdosfs/msdosfsmount.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 <locale.h>
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#include <pwd.h>
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#include <stdio.h>
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/* must be after stdio to declare fparseln */
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#include <libutil.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include "mntopts.h"
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/*
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* XXX - no way to specify "foo=<bar>"-type options; that's what we'd
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* want for "-u", "-g", "-m", "-L", and "-W".
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*/
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static struct mntopt mopts[] = {
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MOPT_STDOPTS,
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MOPT_FORCE,
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MOPT_SYNC,
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MOPT_UPDATE,
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#ifdef MSDOSFSMNT_GEMDOSFS
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{ "gemdosfs", 0, MSDOSFSMNT_GEMDOSFS, 1 },
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#endif
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{ "shortnames", 0, MSDOSFSMNT_SHORTNAME, 1 },
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{ "longnames", 0, MSDOSFSMNT_LONGNAME, 1 },
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{ "nowin95", 0, MSDOSFSMNT_NOWIN95, 1 },
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{ NULL }
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};
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static gid_t a_gid(char *);
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static uid_t a_uid(char *);
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static mode_t a_mask(char *);
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static void usage(void) __dead2;
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static void load_u2wtable(struct msdosfs_args *, char *);
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static void load_ultable(struct msdosfs_args *, char *);
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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, error, mntflags, set_gid, set_uid, set_mask;
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char *dev, *dir, mntpath[MAXPATHLEN];
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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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args.magic = MSDOSFS_ARGSMAGIC;
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while ((c = getopt(argc, argv, "sl9u:g:m:o:L:W:")) != -1) {
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switch (c) {
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#ifdef MSDOSFSMNT_GEMDOSFS
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case 'G':
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args.flags |= MSDOSFSMNT_GEMDOSFS;
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break;
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#endif
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case 's':
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args.flags |= MSDOSFSMNT_SHORTNAME;
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break;
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case 'l':
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args.flags |= MSDOSFSMNT_LONGNAME;
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break;
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case '9':
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args.flags |= MSDOSFSMNT_NOWIN95;
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break;
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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 'L':
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load_ultable(&args, optarg);
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args.flags |= MSDOSFSMNT_ULTABLE;
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break;
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case 'W':
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load_u2wtable(&args, optarg);
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args.flags |= MSDOSFSMNT_U2WTABLE;
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break;
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case 'o':
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getmntopts(optarg, mopts, &mntflags, &args.flags);
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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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/*
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* Resolve the mountpoint with realpath(3) and remove unnecessary
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* slashes from the devicename if there are any.
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*/
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(void)checkpath(dir, mntpath);
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(void)rmslashes(dev, dev);
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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(mntpath, &sb) == -1)
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err(EX_OSERR, "stat %s", mntpath);
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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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error = getvfsbyname("msdosfs", &vfc);
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if (error && vfsisloadable("msdosfs")) {
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if (vfsload("msdosfs"))
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err(EX_OSERR, "vfsload(msdosfs)");
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endvfsent(); /* clear cache */
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error = getvfsbyname("msdosfs", &vfc);
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}
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if (error)
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errx(EX_OSERR, "msdos filesystem is not available");
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if (mount(vfc.vfc_name, mntpath, mntflags, &args) < 0)
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err(EX_OSERR, "%s", dev);
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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(EX_NOUSER, "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(EX_NOUSER, "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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rv = -1;
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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(EX_USAGE, "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, "%s\n%s\n",
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"usage: mount_msdosfs [-o options] [-u user] [-g group] [-m mask]",
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" [-s] [-l] [-9] [-L locale] [-W table] bdev dir");
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exit(EX_USAGE);
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}
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void
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load_u2wtable (pargs, name)
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struct msdosfs_args *pargs;
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char *name;
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{
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FILE *f;
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int i, j, code[8];
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size_t line = 0;
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char buf[128];
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char *fn, *s, *p;
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if (*name == '/')
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fn = name;
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else {
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snprintf(buf, sizeof(buf), "/usr/libdata/msdosfs/%s", name);
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buf[127] = '\0';
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fn = buf;
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}
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if ((f = fopen(fn, "r")) == NULL)
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err(EX_NOINPUT, "%s", fn);
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p = NULL;
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for (i = 0; i < 16; i++) {
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do {
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if (p != NULL) free(p);
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if ((p = s = fparseln(f, NULL, &line, NULL, 0)) == NULL)
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errx(EX_DATAERR, "can't read u2w table row %d near line %d", i, line);
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while (isspace((unsigned char)*s))
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s++;
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} while (*s == '\0');
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if (sscanf(s, "%i%i%i%i%i%i%i%i",
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code, code + 1, code + 2, code + 3, code + 4, code + 5, code + 6, code + 7) != 8)
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errx(EX_DATAERR, "u2w table: missing item(s) in row %d, line %d", i, line);
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for (j = 0; j < 8; j++)
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pargs->u2w[i * 8 + j] = code[j];
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}
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for (i = 0; i < 16; i++) {
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do {
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free(p);
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if ((p = s = fparseln(f, NULL, &line, NULL, 0)) == NULL)
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errx(EX_DATAERR, "can't read d2u table row %d near line %d", i, line);
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while (isspace((unsigned char)*s))
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s++;
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} while (*s == '\0');
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if (sscanf(s, "%i%i%i%i%i%i%i%i",
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code, code + 1, code + 2, code + 3, code + 4, code + 5, code + 6, code + 7) != 8)
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errx(EX_DATAERR, "d2u table: missing item(s) in row %d, line %d", i, line);
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for (j = 0; j < 8; j++)
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pargs->d2u[i * 8 + j] = code[j];
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}
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for (i = 0; i < 16; i++) {
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do {
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free(p);
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if ((p = s = fparseln(f, NULL, &line, NULL, 0)) == NULL)
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errx(EX_DATAERR, "can't read u2d table row %d near line %d", i, line);
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while (isspace((unsigned char)*s))
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s++;
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} while (*s == '\0');
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if (sscanf(s, "%i%i%i%i%i%i%i%i",
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code, code + 1, code + 2, code + 3, code + 4, code + 5, code + 6, code + 7) != 8)
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errx(EX_DATAERR, "u2d table: missing item(s) in row %d, line %d", i, line);
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for (j = 0; j < 8; j++)
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pargs->u2d[i * 8 + j] = code[j];
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}
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free(p);
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fclose(f);
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}
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void
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load_ultable (pargs, name)
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struct msdosfs_args *pargs;
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char *name;
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{
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int i;
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if (setlocale(LC_CTYPE, name) == NULL)
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err(EX_CONFIG, "%s", name);
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for (i = 0; i < 128; i++) {
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pargs->ul[i] = tolower(i | 0x80);
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pargs->lu[i] = toupper(i | 0x80);
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}
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}
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