1 /* $NetBSD: mount_msdos.c,v 1.46 2008/08/05 20:57:45 pooka 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 1.46 2008/08/05 20:57:45 pooka 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 74 main(int argc, char **argv) 75 { 76 77 setprogname(argv[0]); 78 return mount_msdos(argc, argv); 79 } 80 #endif 81 82 void 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, "Gsl9u: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->uid = a_uid(optarg); 113 set_uid = 1; 114 break; 115 case 'g': 116 args->gid = a_gid(optarg); 117 set_gid = 1; 118 break; 119 case 'm': 120 args->mask = a_mask(optarg); 121 set_mask = 1; 122 break; 123 case 'M': 124 args->dirmask = a_mask(optarg); 125 set_dirmask = 1; 126 break; 127 case 'o': 128 mp = getmntopts(optarg, mopts, mntflags, 0); 129 if (mp == NULL) 130 err(1, "getmntopts"); 131 freemntopts(mp); 132 break; 133 case 't': 134 args->gmtoff = atoi(optarg); 135 set_gmtoff = 1; 136 break; 137 case '?': 138 default: 139 usage(); 140 break; 141 } 142 } 143 144 if (optind + 2 != argc) 145 usage(); 146 147 if (set_mask && !set_dirmask) { 148 args->dirmask = args->mask; 149 set_dirmask = 1; 150 } else if (set_dirmask && !set_mask) { 151 args->mask = args->dirmask; 152 set_mask = 1; 153 } 154 155 dev = argv[optind]; 156 dir = argv[optind + 1]; 157 158 pathadj(dev, canon_dev); 159 pathadj(dir, canon_dir); 160 161 args->fspec = dev; 162 if (!set_gid || !set_uid || !set_mask) { 163 if (stat(dir, &sb) == -1) 164 err(1, "stat %s", dir); 165 166 if (!set_uid) 167 args->uid = sb.st_uid; 168 if (!set_gid) 169 args->gid = sb.st_gid; 170 if (!set_mask) { 171 args->mask = args->dirmask = 172 sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 173 } 174 } 175 176 if (!set_gmtoff) { 177 /* use user's time zone as default */ 178 time(&now); 179 tm = localtime(&now); 180 args->gmtoff = tm->tm_gmtoff; 181 182 } 183 args->flags |= MSDOSFSMNT_VERSIONED; 184 args->version = MSDOSFSMNT_VERSION; 185 } 186 187 int 188 mount_msdos(int argc, char **argv) 189 { 190 struct msdosfs_args args; 191 char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN]; 192 int mntflags; 193 194 mount_msdos_parseargs(argc, argv, &args, &mntflags, 195 canon_dev, canon_dir); 196 197 if (mount(MOUNT_MSDOS, canon_dir, mntflags, &args, sizeof args) == -1) 198 err(1, "%s on %s", canon_dev, canon_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: %s [-9Gls] [-g gid] [-M mask] [-m mask] " 215 "[-o options]\n\t[-t gmtoff] [-u uid] special mountpath\n", 216 getprogname()); 217 exit(1); 218 } 219