1 /* $NetBSD: mount_msdos.c,v 1.38 2006/03/21 21:11:41 christos 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 1.38 2006/03/21 21:11:41 christos Exp $"); 40 #endif /* not lint */ 41 42 #include <sys/cdefs.h> 43 #include <sys/param.h> 44 #include <sys/mount.h> 45 #include <sys/stat.h> 46 #include <msdosfs/msdosfsmount.h> 47 #include <ctype.h> 48 #include <err.h> 49 #include <grp.h> 50 #include <pwd.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <time.h> 55 #include <unistd.h> 56 #include <util.h> 57 58 #include <mntopts.h> 59 #include <fattr.h> 60 61 static const struct mntopt mopts[] = { 62 MOPT_STDOPTS, 63 MOPT_ASYNC, 64 MOPT_SYNC, 65 MOPT_UPDATE, 66 MOPT_GETARGS, 67 { NULL } 68 }; 69 70 int mount_msdos(int argc, char **argv); 71 static void usage(void) __attribute__((__noreturn__)); 72 73 #ifndef MOUNT_NOMAIN 74 int 75 main(int argc, char **argv) 76 { 77 return mount_msdos(argc, argv); 78 } 79 #endif 80 81 int 82 mount_msdos(int argc, char **argv) 83 { 84 struct msdosfs_args args; 85 struct stat sb; 86 int c, mntflags, set_gid, set_uid, set_mask, set_dirmask, set_gmtoff; 87 char *dev, *dir, canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN]; 88 time_t now; 89 struct tm *tm; 90 mntoptparse_t mp; 91 92 mntflags = set_gid = set_uid = set_mask = set_dirmask = set_gmtoff = 0; 93 (void)memset(&args, '\0', sizeof(args)); 94 95 while ((c = getopt(argc, argv, "Gsl9u:g:m:M:o:t:")) != -1) { 96 switch (c) { 97 case 'G': 98 args.flags |= MSDOSFSMNT_GEMDOSFS; 99 break; 100 case 's': 101 args.flags |= MSDOSFSMNT_SHORTNAME; 102 break; 103 case 'l': 104 args.flags |= MSDOSFSMNT_LONGNAME; 105 break; 106 case '9': 107 args.flags |= MSDOSFSMNT_NOWIN95; 108 break; 109 case 'u': 110 args.uid = a_uid(optarg); 111 set_uid = 1; 112 break; 113 case 'g': 114 args.gid = a_gid(optarg); 115 set_gid = 1; 116 break; 117 case 'm': 118 args.mask = a_mask(optarg); 119 set_mask = 1; 120 break; 121 case 'M': 122 args.dirmask = a_mask(optarg); 123 set_dirmask = 1; 124 break; 125 case 'o': 126 mp = getmntopts(optarg, mopts, &mntflags, 0); 127 if (mp == NULL) 128 err(1, "getmntopts"); 129 freemntopts(mp); 130 break; 131 case 't': 132 args.gmtoff = atoi(optarg); 133 set_gmtoff = 1; 134 break; 135 case '?': 136 default: 137 usage(); 138 break; 139 } 140 } 141 142 if (optind + 2 != argc) 143 usage(); 144 145 if (set_mask && !set_dirmask) { 146 args.dirmask = args.mask; 147 set_dirmask = 1; 148 } else if (set_dirmask && !set_mask) { 149 args.mask = args.dirmask; 150 set_mask = 1; 151 } 152 153 dev = argv[optind]; 154 dir = argv[optind + 1]; 155 156 if (realpath(dev, canon_dev) == NULL) /* Check device path */ 157 err(1, "realpath %s", dev); 158 if (strncmp(dev, canon_dev, MAXPATHLEN)) { 159 warnx("\"%s\" is a relative path.", dev); 160 dev = canon_dev; 161 warnx("using \"%s\" instead.", dev); 162 } 163 164 if (realpath(dir, canon_dir) == NULL) /* Check mounton path */ 165 err(1, "realpath %s", dir); 166 if (strncmp(dir, canon_dir, MAXPATHLEN)) { 167 warnx("\"%s\" is a relative path.", dir); 168 dir = canon_dir; 169 warnx("using \"%s\" instead.", dir); 170 } 171 172 args.fspec = dev; 173 if (!set_gid || !set_uid || !set_mask) { 174 if (stat(dir, &sb) == -1) 175 err(1, "stat %s", dir); 176 177 if (!set_uid) 178 args.uid = sb.st_uid; 179 if (!set_gid) 180 args.gid = sb.st_gid; 181 if (!set_mask) { 182 args.mask = args.dirmask = 183 sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 184 } 185 } 186 187 if (!set_gmtoff) { 188 /* use user's time zone as default */ 189 time(&now); 190 tm = localtime(&now); 191 args.gmtoff = tm->tm_gmtoff; 192 193 } 194 args.flags |= MSDOSFSMNT_VERSIONED; 195 args.version = MSDOSFSMNT_VERSION; 196 197 if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0) 198 err(1, "%s on %s", dev, dir); 199 200 if (mntflags & MNT_GETARGS) { 201 char buf[1024]; 202 (void)snprintb(buf, sizeof(buf), MSDOSFSMNT_BITS, args.flags); 203 printf("uid=%d, gid=%d, mask=0%o, dirmask=0%o, flags=%s\n", 204 args.uid, args.gid, args.mask, args.dirmask, buf); 205 } 206 207 exit (0); 208 } 209 210 static void 211 usage(void) 212 { 213 214 fprintf(stderr, "usage: mount_msdos [-9Gls] [-g gid] [-M mask] [-m mask] [-o options]\n" 215 "\t[-t gmtoff] [-u uid] special node\n"); 216 exit(1); 217 } 218