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 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, "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 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 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
Indexes created Sun Sep 21 20:09:37 GMT 2025