1 /* $NetBSD: mount_msdos.c,v 1.18 1997/09/16 12:24:18 lukem 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 by Christopher G. Demetriou. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 static const char rcsid[] = 35 "$FreeBSD$"; 36 #endif /* not lint */ 37 38 #include <sys/param.h> 39 #include <sys/mount.h> 40 #include <sys/stat.h> 41 #include <sys/iconv.h> 42 #include <sys/linker.h> 43 #include <sys/module.h> 44 45 #include <fs/msdosfs/msdosfsmount.h> 46 47 #include <ctype.h> 48 #include <err.h> 49 #include <grp.h> 50 #include <locale.h> 51 #include <pwd.h> 52 #include <stdio.h> 53 /* must be after stdio to declare fparseln */ 54 #include <libutil.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <sysexits.h> 58 #include <unistd.h> 59 60 #include "mntopts.h" 61 62 #define TRANSITION_PERIOD_HACK 63 64 /* 65 * XXX - no way to specify "foo=<bar>"-type options; that's what we'd 66 * want for "-u", "-g", "-m", "-M", "-L", "-D", and "-W". 67 */ 68 static struct mntopt mopts[] = { 69 MOPT_STDOPTS, 70 MOPT_FORCE, 71 MOPT_SYNC, 72 MOPT_UPDATE, 73 { "shortnames", 0, MSDOSFSMNT_SHORTNAME, 1 }, 74 { "longnames", 0, MSDOSFSMNT_LONGNAME, 1 }, 75 { "nowin95", 0, MSDOSFSMNT_NOWIN95, 1 }, 76 { NULL } 77 }; 78 79 static gid_t a_gid(char *); 80 static uid_t a_uid(char *); 81 static mode_t a_mask(char *); 82 static void usage(void) __dead2; 83 static int set_charset(struct msdosfs_args *); 84 85 int 86 main(int argc, char **argv) 87 { 88 struct msdosfs_args args; 89 struct stat sb; 90 int c, mntflags, set_gid, set_uid, set_mask, set_dirmask; 91 char *dev, *dir, mntpath[MAXPATHLEN], *csp; 92 93 mntflags = set_gid = set_uid = set_mask = set_dirmask = 0; 94 (void)memset(&args, '\0', sizeof(args)); 95 args.magic = MSDOSFS_ARGSMAGIC; 96 97 args.cs_win = NULL; 98 args.cs_dos = NULL; 99 args.cs_local = NULL; 100 #ifdef TRANSITION_PERIOD_HACK 101 while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:W:")) != -1) { 102 #else 103 while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:")) != -1) { 104 #endif 105 switch (c) { 106 case 's': 107 args.flags |= MSDOSFSMNT_SHORTNAME; 108 break; 109 case 'l': 110 args.flags |= MSDOSFSMNT_LONGNAME; 111 break; 112 case '9': 113 args.flags |= MSDOSFSMNT_NOWIN95; 114 break; 115 case 'u': 116 args.uid = a_uid(optarg); 117 set_uid = 1; 118 break; 119 case 'g': 120 args.gid = a_gid(optarg); 121 set_gid = 1; 122 break; 123 case 'm': 124 args.mask = a_mask(optarg); 125 set_mask = 1; 126 break; 127 case 'M': 128 args.dirmask = a_mask(optarg); 129 set_dirmask = 1; 130 break; 131 case 'L': 132 if (setlocale(LC_CTYPE, optarg) == NULL) 133 err(EX_CONFIG, "%s", optarg); 134 csp = strchr(optarg,'.'); 135 if (!csp) 136 err(EX_CONFIG, "%s", optarg); 137 args.cs_local = malloc(ICONV_CSNMAXLEN); 138 if (args.cs_local == NULL) 139 err(EX_OSERR, "malloc()"); 140 strncpy(args.cs_local, 141 kiconv_quirkcs(csp + 1, KICONV_VENDOR_MICSFT), 142 ICONV_CSNMAXLEN); 143 break; 144 case 'D': 145 args.cs_dos = malloc(ICONV_CSNMAXLEN); 146 if (args.cs_dos == NULL) 147 err(EX_OSERR, "malloc()"); 148 strncpy(args.cs_dos, optarg, ICONV_CSNMAXLEN); 149 break; 150 case 'o': 151 getmntopts(optarg, mopts, &mntflags, &args.flags); 152 break; 153 #ifdef TRANSITION_PERIOD_HACK 154 case 'W': 155 args.cs_local = malloc(ICONV_CSNMAXLEN); 156 if (args.cs_local == NULL) 157 err(EX_OSERR, "malloc()"); 158 args.cs_dos = malloc(ICONV_CSNMAXLEN); 159 if (args.cs_dos == NULL) 160 err(EX_OSERR, "malloc()"); 161 if (strcmp(optarg, "iso22dos") == 0) { 162 strcpy(args.cs_local, "ISO8859-2"); 163 strcpy(args.cs_dos, "CP852"); 164 } else if (strcmp(optarg, "iso72dos") == 0) { 165 strcpy(args.cs_local, "ISO8859-7"); 166 strcpy(args.cs_dos, "CP737"); 167 } else if (strcmp(optarg, "koi2dos") == 0) { 168 strcpy(args.cs_local, "KOI8-R"); 169 strcpy(args.cs_dos, "CP866"); 170 } else if (strcmp(optarg, "koi8u2dos") == 0) { 171 strcpy(args.cs_local, "KOI8-U"); 172 strcpy(args.cs_dos, "CP866"); 173 } else { 174 err(EX_NOINPUT, "%s", optarg); 175 } 176 break; 177 #endif /* TRANSITION_PERIOD_HACK */ 178 case '?': 179 default: 180 usage(); 181 break; 182 } 183 } 184 185 if (optind + 2 != argc) 186 usage(); 187 188 if (set_mask && !set_dirmask) { 189 args.dirmask = args.mask; 190 set_dirmask = 1; 191 } 192 else if (set_dirmask && !set_mask) { 193 args.mask = args.dirmask; 194 set_mask = 1; 195 } 196 197 dev = argv[optind]; 198 dir = argv[optind + 1]; 199 200 if (args.cs_local) { 201 if (set_charset(&args) == -1) 202 err(EX_OSERR, "msdosfs_iconv"); 203 args.flags |= MSDOSFSMNT_KICONV; 204 } else if (args.cs_dos) { 205 if ((args.cs_local = malloc(ICONV_CSNMAXLEN)) == NULL) 206 err(EX_OSERR, "malloc()"); 207 strcpy(args.cs_local, "ISO8859-1"); 208 if (set_charset(&args) == -1) 209 err(EX_OSERR, "msdosfs_iconv"); 210 args.flags |= MSDOSFSMNT_KICONV; 211 } 212 213 /* 214 * Resolve the mountpoint with realpath(3) and remove unnecessary 215 * slashes from the devicename if there are any. 216 */ 217 (void)checkpath(dir, mntpath); 218 (void)rmslashes(dev, dev); 219 220 args.fspec = dev; 221 args.export.ex_root = -2; /* unchecked anyway on DOS fs */ 222 if (mntflags & MNT_RDONLY) 223 args.export.ex_flags = MNT_EXRDONLY; 224 else 225 args.export.ex_flags = 0; 226 if (!set_gid || !set_uid || !set_mask) { 227 if (stat(mntpath, &sb) == -1) 228 err(EX_OSERR, "stat %s", mntpath); 229 230 if (!set_uid) 231 args.uid = sb.st_uid; 232 if (!set_gid) 233 args.gid = sb.st_gid; 234 if (!set_mask) 235 args.mask = args.dirmask = 236 sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 237 } 238 239 if (mount("msdosfs", mntpath, mntflags, &args) < 0) 240 err(EX_OSERR, "%s", dev); 241 242 exit (0); 243 } 244 245 gid_t 246 a_gid(s) 247 char *s; 248 { 249 struct group *gr; 250 char *gname; 251 gid_t gid; 252 253 if ((gr = getgrnam(s)) != NULL) 254 gid = gr->gr_gid; 255 else { 256 for (gname = s; *s && isdigit(*s); ++s); 257 if (!*s) 258 gid = atoi(gname); 259 else 260 errx(EX_NOUSER, "unknown group id: %s", gname); 261 } 262 return (gid); 263 } 264 265 uid_t 266 a_uid(s) 267 char *s; 268 { 269 struct passwd *pw; 270 char *uname; 271 uid_t uid; 272 273 if ((pw = getpwnam(s)) != NULL) 274 uid = pw->pw_uid; 275 else { 276 for (uname = s; *s && isdigit(*s); ++s); 277 if (!*s) 278 uid = atoi(uname); 279 else 280 errx(EX_NOUSER, "unknown user id: %s", uname); 281 } 282 return (uid); 283 } 284 285 mode_t 286 a_mask(s) 287 char *s; 288 { 289 int done, rv; 290 char *ep; 291 292 done = 0; 293 rv = -1; 294 if (*s >= '0' && *s <= '7') { 295 done = 1; 296 rv = strtol(optarg, &ep, 8); 297 } 298 if (!done || rv < 0 || *ep) 299 errx(EX_USAGE, "invalid file mode: %s", s); 300 return (rv); 301 } 302 303 void 304 usage() 305 { 306 #ifdef TRANSITION_PERIOD_HACK 307 fprintf(stderr, "%s\n%s\n%s\n", 308 "usage: mount_msdosfs [-9ls] [-D DOS_codepage] [-g gid] [-L locale]", 309 " [-M mask] [-m mask] [-o options] [-u uid]", 310 " [-W table] special node"); 311 #else 312 fprintf(stderr, "%s\n%s\n%s\n", 313 "usage: mount_msdosfs [-9ls] [-D DOS_codepage] [-g gid] [-L locale]", 314 " [-M mask] [-m mask] [-o options] [-u uid]", 315 " special node"); 316 #endif 317 exit(EX_USAGE); 318 } 319 320 int 321 set_charset(struct msdosfs_args *args) 322 { 323 int error; 324 325 if (modfind("msdosfs_iconv") < 0) 326 if (kldload("msdosfs_iconv") < 0 || modfind("msdosfs_iconv") < 0) { 327 warnx( "cannot find or load \"msdosfs_iconv\" kernel module"); 328 return (-1); 329 } 330 331 if ((args->cs_win = malloc(ICONV_CSNMAXLEN)) == NULL) 332 return (-1); 333 strncpy(args->cs_win, ENCODING_UNICODE, ICONV_CSNMAXLEN); 334 error = kiconv_add_xlat16_cspairs(args->cs_win, args->cs_local); 335 if (error) 336 return (-1); 337 if (args->cs_dos) { 338 error = kiconv_add_xlat16_cspairs(args->cs_dos, args->cs_local); 339 if (error) 340 return (-1); 341 } else { 342 if ((args->cs_dos = malloc(ICONV_CSNMAXLEN)) == NULL) 343 return (-1); 344 strcpy(args->cs_dos, args->cs_local); 345 error = kiconv_add_xlat16_cspair(args->cs_local, args->cs_local, 346 KICONV_FROM_UPPER | KICONV_LOWER); 347 if (error) 348 return (-1); 349 } 350 351 return (0); 352 } 353