1 /* $NetBSD: mount_msdos.c,v 1.50 2016/08/21 22:27:20 jdolecek Exp $ */
2
3 /*
4 * Copyright (c) 1994 Christopher G. Demetriou
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed for the
18 * NetBSD Project. See http://www.NetBSD.org/ for
19 * information about NetBSD.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
35 */
36
37 #include <sys/cdefs.h>
38 #ifndef lint
39 __RCSID("$NetBSD: mount_msdos.c,v 1.50 2016/08/21 22:27:20 jdolecek Exp $");
40 #endif /* not lint */
41
42 #include <sys/param.h>
43 #include <sys/mount.h>
44 #include <sys/stat.h>
45 #include <msdosfs/msdosfsmount.h>
46 #include <err.h>
47 #include <grp.h>
48 #include <pwd.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <time.h>
53 #include <unistd.h>
54 #include <util.h>
55
56 #include <mntopts.h>
57
58 #include "mountprog.h"
59 #include "mount_msdos.h"
60
61 static const struct mntopt mopts[] = {
62 MOPT_STDOPTS,
63 MOPT_ASYNC,
64 MOPT_SYNC,
65 MOPT_UPDATE,
66 MOPT_GETARGS,
67 MOPT_NULL,
68 };
69
70 static void usage(void) __dead;
71
72 #ifndef MOUNT_NOMAIN
73 int
main(int argc,char ** argv)74 main(int argc, char **argv)
75 {
76
77 setprogname(argv[0]);
78 return mount_msdos(argc, argv);
79 }
80 #endif
81
82 void
mount_msdos_parseargs(int argc,char ** argv,struct msdosfs_args * args,int * mntflags,char * canon_dev,char * canon_dir)83 mount_msdos_parseargs(int argc, char **argv,
84 struct msdosfs_args *args, int *mntflags,
85 char *canon_dev, char *canon_dir)
86 {
87 struct stat sb;
88 int c, set_gid, set_uid, set_mask, set_dirmask, set_gmtoff;
89 char *dev, *dir;
90 time_t now;
91 struct tm *tm;
92 mntoptparse_t mp;
93
94 *mntflags = set_gid = set_uid = set_mask = set_dirmask = set_gmtoff = 0;
95 (void)memset(args, '\0', sizeof(*args));
96
97 while ((c = getopt(argc, argv, "Gsl9Uu:g:m:M:o:t:")) != -1) {
98 switch (c) {
99 case 'G':
100 args->flags |= MSDOSFSMNT_GEMDOSFS;
101 break;
102 case 's':
103 args->flags |= MSDOSFSMNT_SHORTNAME;
104 break;
105 case 'l':
106 args->flags |= MSDOSFSMNT_LONGNAME;
107 break;
108 case '9':
109 args->flags |= MSDOSFSMNT_NOWIN95;
110 break;
111 case 'U':
112 args->flags |= MSDOSFSMNT_UTF8;
113 break;
114 case 'u':
115 args->uid = a_uid(optarg);
116 set_uid = 1;
117 break;
118 case 'g':
119 args->gid = a_gid(optarg);
120 set_gid = 1;
121 break;
122 case 'm':
123 args->mask = a_mask(optarg);
124 set_mask = 1;
125 break;
126 case 'M':
127 args->dirmask = a_mask(optarg);
128 set_dirmask = 1;
129 break;
130 case 'o':
131 mp = getmntopts(optarg, mopts, mntflags, 0);
132 if (mp == NULL)
133 err(1, "getmntopts");
134 freemntopts(mp);
135 break;
136 case 't':
137 args->gmtoff = atoi(optarg);
138 set_gmtoff = 1;
139 break;
140 case '?':
141 default:
142 usage();
143 break;
144 }
145 }
146
147 if (optind + 2 != argc)
148 usage();
149
150 if (set_mask && !set_dirmask) {
151 args->dirmask = args->mask;
152 set_dirmask = 1;
153 } else if (set_dirmask && !set_mask) {
154 args->mask = args->dirmask;
155 set_mask = 1;
156 }
157
158 dev = argv[optind];
159 dir = argv[optind + 1];
160
161 pathadj(dev, canon_dev);
162 pathadj(dir, canon_dir);
163
164 args->fspec = canon_dev;
165 if (!set_gid || !set_uid || !set_mask) {
166 if (stat(dir, &sb) == -1)
167 err(1, "stat %s", dir);
168
169 if (!set_uid)
170 args->uid = sb.st_uid;
171 if (!set_gid)
172 args->gid = sb.st_gid;
173 if (!set_mask) {
174 args->mask = args->dirmask =
175 sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
176 }
177 }
178
179 if (!set_gmtoff) {
180 /* use user's time zone as default */
181 time(&now);
182 tm = localtime(&now);
183 args->gmtoff = tm->tm_gmtoff;
184
185 }
186 args->flags |= MSDOSFSMNT_VERSIONED;
187 args->version = MSDOSFSMNT_VERSION;
188 }
189
190 int
mount_msdos(int argc,char ** argv)191 mount_msdos(int argc, char **argv)
192 {
193 struct msdosfs_args args;
194 char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
195 int mntflags;
196
197 mount_msdos_parseargs(argc, argv, &args, &mntflags,
198 canon_dev, canon_dir);
199
200 if (mount(MOUNT_MSDOS, canon_dir, mntflags, &args, sizeof args) == -1)
201 err(1, "%s on %s", canon_dev, canon_dir);
202
203 if (mntflags & MNT_GETARGS) {
204 char buf[1024];
205 (void)snprintb(buf, sizeof(buf), MSDOSFSMNT_BITS, args.flags);
206 printf("uid=%d, gid=%d, mask=0%o, dirmask=0%o, gmtoff=%d, flags=%s\n",
207 args.uid, args.gid, args.mask, args.dirmask,
208 args.gmtoff, buf);
209 }
210
211 exit (0);
212 }
213
214 static void
usage(void)215 usage(void)
216 {
217
218 fprintf(stderr, "usage: %s [-9GlsU] [-g gid] [-M mask] [-m mask] "
219 "[-o options]\n\t[-t gmtoff] [-u uid] special mountpath\n",
220 getprogname());
221 exit(1);
222 }
223