353 lines
8.8 KiB
C
353 lines
8.8 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 <sys/iconv.h>
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#include <sys/linker.h>
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#include <sys/module.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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#define TRANSITION_PERIOD_HACK
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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", "-M", "-L", "-D", 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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{ "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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MOPT_END
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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 int set_charset(struct msdosfs_args *);
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int
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main(int argc, 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, set_dirmask;
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char *dev, *dir, mntpath[MAXPATHLEN], *csp;
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mntflags = set_gid = set_uid = set_mask = set_dirmask = 0;
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(void)memset(&args, '\0', sizeof(args));
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args.magic = MSDOSFS_ARGSMAGIC;
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args.cs_win = NULL;
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args.cs_dos = NULL;
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args.cs_local = NULL;
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#ifdef TRANSITION_PERIOD_HACK
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while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:W:")) != -1) {
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#else
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while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:")) != -1) {
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#endif
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switch (c) {
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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 'M':
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args.dirmask = a_mask(optarg);
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set_dirmask = 1;
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break;
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case 'L':
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if (setlocale(LC_CTYPE, optarg) == NULL)
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err(EX_CONFIG, "%s", optarg);
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csp = strchr(optarg,'.');
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if (!csp)
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err(EX_CONFIG, "%s", optarg);
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args.cs_local = malloc(ICONV_CSNMAXLEN);
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if (args.cs_local == NULL)
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err(EX_OSERR, "malloc()");
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strncpy(args.cs_local,
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kiconv_quirkcs(csp + 1, KICONV_VENDOR_MICSFT),
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ICONV_CSNMAXLEN);
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break;
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case 'D':
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args.cs_dos = malloc(ICONV_CSNMAXLEN);
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if (args.cs_dos == NULL)
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err(EX_OSERR, "malloc()");
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strncpy(args.cs_dos, optarg, ICONV_CSNMAXLEN);
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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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#ifdef TRANSITION_PERIOD_HACK
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case 'W':
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args.cs_local = malloc(ICONV_CSNMAXLEN);
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if (args.cs_local == NULL)
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err(EX_OSERR, "malloc()");
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args.cs_dos = malloc(ICONV_CSNMAXLEN);
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if (args.cs_dos == NULL)
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err(EX_OSERR, "malloc()");
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if (strcmp(optarg, "iso22dos") == 0) {
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strcpy(args.cs_local, "ISO8859-2");
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strcpy(args.cs_dos, "CP852");
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} else if (strcmp(optarg, "iso72dos") == 0) {
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strcpy(args.cs_local, "ISO8859-7");
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strcpy(args.cs_dos, "CP737");
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} else if (strcmp(optarg, "koi2dos") == 0) {
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strcpy(args.cs_local, "KOI8-R");
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strcpy(args.cs_dos, "CP866");
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} else if (strcmp(optarg, "koi8u2dos") == 0) {
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strcpy(args.cs_local, "KOI8-U");
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strcpy(args.cs_dos, "CP866");
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} else {
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err(EX_NOINPUT, "%s", optarg);
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}
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break;
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#endif /* TRANSITION_PERIOD_HACK */
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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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if (set_mask && !set_dirmask) {
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args.dirmask = args.mask;
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set_dirmask = 1;
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}
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else if (set_dirmask && !set_mask) {
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args.mask = args.dirmask;
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set_mask = 1;
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}
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dev = argv[optind];
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dir = argv[optind + 1];
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if (args.cs_local) {
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if (set_charset(&args) == -1)
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err(EX_OSERR, "msdosfs_iconv");
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args.flags |= MSDOSFSMNT_KICONV;
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} else if (args.cs_dos) {
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if ((args.cs_local = malloc(ICONV_CSNMAXLEN)) == NULL)
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err(EX_OSERR, "malloc()");
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strcpy(args.cs_local, "ISO8859-1");
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if (set_charset(&args) == -1)
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err(EX_OSERR, "msdosfs_iconv");
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args.flags |= MSDOSFSMNT_KICONV;
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}
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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 = args.dirmask =
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sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
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}
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if (mount("msdosfs", 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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#ifdef TRANSITION_PERIOD_HACK
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fprintf(stderr, "%s\n%s\n%s\n",
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"usage: mount_msdosfs [-9ls] [-D DOS_codepage] [-g gid] [-L locale]",
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" [-M mask] [-m mask] [-o options] [-u uid]",
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" [-W table] special node");
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#else
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fprintf(stderr, "%s\n%s\n%s\n",
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"usage: mount_msdosfs [-9ls] [-D DOS_codepage] [-g gid] [-L locale]",
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" [-M mask] [-m mask] [-o options] [-u uid]",
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" special node");
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#endif
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exit(EX_USAGE);
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}
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int
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set_charset(struct msdosfs_args *args)
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{
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int error;
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if (modfind("msdosfs_iconv") < 0)
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if (kldload("msdosfs_iconv") < 0 || modfind("msdosfs_iconv") < 0) {
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warnx("cannot find or load \"msdosfs_iconv\" kernel module");
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return (-1);
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}
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if ((args->cs_win = malloc(ICONV_CSNMAXLEN)) == NULL)
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return (-1);
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strncpy(args->cs_win, ENCODING_UNICODE, ICONV_CSNMAXLEN);
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error = kiconv_add_xlat16_cspairs(args->cs_win, args->cs_local);
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if (error)
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return (-1);
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if (args->cs_dos) {
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error = kiconv_add_xlat16_cspairs(args->cs_dos, args->cs_local);
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if (error)
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return (-1);
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} else {
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if ((args->cs_dos = malloc(ICONV_CSNMAXLEN)) == NULL)
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return (-1);
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strcpy(args->cs_dos, args->cs_local);
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error = kiconv_add_xlat16_cspair(args->cs_local, args->cs_local,
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KICONV_FROM_UPPER | KICONV_LOWER);
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if (error)
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return (-1);
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}
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return (0);
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}
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