1 /* $NetBSD: mount_msdos.c,v 1.44 2007/12/15 19:44:46 perry 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 1.44 2007/12/15 19:44:46 perry 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 #include <fattr.h> 58 59 static const struct mntopt mopts[] = { 60 MOPT_STDOPTS, 61 MOPT_ASYNC, 62 MOPT_SYNC, 63 MOPT_UPDATE, 64 MOPT_GETARGS, 65 MOPT_NULL, 66 }; 67 68 int mount_msdos(int argc, char **argv); 69 static void usage(void) __dead; 70 71 #ifndef MOUNT_NOMAIN 72 int 73 main(int argc, char **argv) 74 { 75 return mount_msdos(argc, argv); 76 } 77 #endif 78 79 int 80 mount_msdos(int argc, char **argv) 81 { 82 struct msdosfs_args args; 83 struct stat sb; 84 int c, mntflags, set_gid, set_uid, set_mask, set_dirmask, set_gmtoff; 85 char *dev, *dir, canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN]; 86 time_t now; 87 struct tm *tm; 88 mntoptparse_t mp; 89 90 mntflags = set_gid = set_uid = set_mask = set_dirmask = set_gmtoff = 0; 91 (void)memset(&args, '\0', sizeof(args)); 92 93 while ((c = getopt(argc, argv, "Gsl9u:g:m:M:o:t:")) != -1) { 94 switch (c) { 95 case 'G': 96 args.flags |= MSDOSFSMNT_GEMDOSFS; 97 break; 98 case 's': 99 args.flags |= MSDOSFSMNT_SHORTNAME; 100 break; 101 case 'l': 102 args.flags |= MSDOSFSMNT_LONGNAME; 103 break; 104 case '9': 105 args.flags |= MSDOSFSMNT_NOWIN95; 106 break; 107 case 'u': 108 args.uid = a_uid(optarg); 109 set_uid = 1; 110 break; 111 case 'g': 112 args.gid = a_gid(optarg); 113 set_gid = 1; 114 break; 115 case 'm': 116 args.mask = a_mask(optarg); 117 set_mask = 1; 118 break; 119 case 'M': 120 args.dirmask = a_mask(optarg); 121 set_dirmask = 1; 122 break; 123 case 'o': 124 mp = getmntopts(optarg, mopts, &mntflags, 0); 125 if (mp == NULL) 126 err(1, "getmntopts"); 127 freemntopts(mp); 128 break; 129 case 't': 130 args.gmtoff = atoi(optarg); 131 set_gmtoff = 1; 132 break; 133 case '?': 134 default: 135 usage(); 136 break; 137 } 138 } 139 140 if (optind + 2 != argc) 141 usage(); 142 143 if (set_mask && !set_dirmask) { 144 args.dirmask = args.mask; 145 set_dirmask = 1; 146 } else if (set_dirmask && !set_mask) { 147 args.mask = args.dirmask; 148 set_mask = 1; 149 } 150 151 dev = argv[optind]; 152 dir = argv[optind + 1]; 153 154 if (realpath(dev, canon_dev) == NULL) /* Check device path */ 155 err(1, "realpath %s", dev); 156 if (strncmp(dev, canon_dev, MAXPATHLEN)) { 157 warnx("\"%s\" is a relative path.", dev); 158 dev = canon_dev; 159 warnx("using \"%s\" instead.", dev); 160 } 161 162 if (realpath(dir, canon_dir) == NULL) /* Check mounton path */ 163 err(1, "realpath %s", dir); 164 if (strncmp(dir, canon_dir, MAXPATHLEN)) { 165 warnx("\"%s\" is a relative path.", dir); 166 dir = canon_dir; 167 warnx("using \"%s\" instead.", dir); 168 } 169 170 args.fspec = dev; 171 if (!set_gid || !set_uid || !set_mask) { 172 if (stat(dir, &sb) == -1) 173 err(1, "stat %s", dir); 174 175 if (!set_uid) 176 args.uid = sb.st_uid; 177 if (!set_gid) 178 args.gid = sb.st_gid; 179 if (!set_mask) { 180 args.mask = args.dirmask = 181 sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 182 } 183 } 184 185 if (!set_gmtoff) { 186 /* use user's time zone as default */ 187 time(&now); 188 tm = localtime(&now); 189 args.gmtoff = tm->tm_gmtoff; 190 191 } 192 args.flags |= MSDOSFSMNT_VERSIONED; 193 args.version = MSDOSFSMNT_VERSION; 194 195 if (mount(MOUNT_MSDOS, dir, mntflags, &args, sizeof args) == -1) 196 err(1, "%s on %s", dev, dir); 197 198 if (mntflags & MNT_GETARGS) { 199 char buf[1024]; 200 (void)snprintb(buf, sizeof(buf), MSDOSFSMNT_BITS, args.flags); 201 printf("uid=%d, gid=%d, mask=0%o, dirmask=0%o, flags=%s\n", 202 args.uid, args.gid, args.mask, args.dirmask, buf); 203 } 204 205 exit (0); 206 } 207 208 static void 209 usage(void) 210 { 211 212 fprintf(stderr, "usage: mount_msdos [-9Gls] [-g gid] [-M mask] [-m mask] [-o options]\n" 213 "\t[-t gmtoff] [-u uid] special node\n"); 214 exit(1); 215 } 216