sbin/mount_ntfs/mount_ntfs.c

   1 /*
   2  * Copyright (c) 1994 Christopher G. Demetriou
   3  * Copyright (c) 1999 Semen Ustimenko
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Christopher G. Demetriou.
  17  * 4. The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  * $FreeBSD: src/sbin/mount_ntfs/mount_ntfs.c,v 1.3.2.2 2001/10/12 22:08:43 semenu Exp $
  32  * $DragonFly: src/sbin/mount_ntfs/mount_ntfs.c,v 1.9 2008/11/02 21:52:46 swildner Exp $
  33  *
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #include <sys/param.h>
  38 #define NTFS
  39 #include <sys/mount.h>
  40 #include <sys/stat.h>
  41 #include <vfs/ntfs/ntfsmount.h>
  42 #include <ctype.h>
  43 #include <err.h>
  44 #include <grp.h>
  45 #include <pwd.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49 #include <sysexits.h>
  50 #include <unistd.h>
  51 #include <libutil.h>
  52
  53 #include "mntopts.h"
  54
  55 static struct mntopt mopts[] = {
  56         MOPT_STDOPTS,
  57         MOPT_NULL
  58 };
  59
  60 static gid_t    a_gid(char *);
  61 static uid_t    a_uid(char *);
  62 static mode_t   a_mask(char *);
  63 static void     usage(void) __dead2;
  64
  65 static void     load_u2wtable(struct ntfs_args *, char *);
  66
  67 int
  68 main(int argc, char **argv)
  69 {
  70         struct ntfs_args args;
  71         struct stat sb;
  72         int c, mntflags, set_gid, set_uid, set_mask, error;
  73         char *dev, *dir, mntpath[MAXPATHLEN];
  74 #if __FreeBSD_version >= 300000 || defined(__DragonFly__)
  75         struct vfsconf vfc;
  76 #else
  77         struct vfsconf *vfc;
  78 #endif
  79
  80         mntflags = set_gid = set_uid = set_mask = 0;
  81         memset(&args, '\0', sizeof(args));
  82
  83         while ((c = getopt(argc, argv, "aiu:g:m:o:W:")) !=  -1) {
  84                 switch (c) {
  85                 case 'u':
  86                         args.uid = a_uid(optarg);
  87                         set_uid = 1;
  88                         break;
  89                 case 'g':
  90                         args.gid = a_gid(optarg);
  91                         set_gid = 1;
  92                         break;
  93                 case 'm':
  94                         args.mode = a_mask(optarg);
  95                         set_mask = 1;
  96                         break;
  97                 case 'i':
  98                         args.flag |= NTFS_MFLAG_CASEINS;
  99                         break;
 100                 case 'a':
 101                         args.flag |= NTFS_MFLAG_ALLNAMES;
 102                         break;
 103                 case 'o':
 104                         getmntopts(optarg, mopts, &mntflags, 0);
 105                         break;
 106                 case 'W':
 107                         load_u2wtable(&args, optarg);
 108                         args.flag |= NTFSMNT_U2WTABLE;
 109                         break;
 110                 case '?':
 111                 default:
 112                         usage();
 113                         break;
 114                 }
 115         }
 116
 117         if (optind + 2 != argc)
 118                 usage();
 119
 120         dev = argv[optind];
 121         dir = argv[optind + 1];
 122
 123         /*
 124          * Resolve the mountpoint with realpath(3) and remove unnecessary
 125          * slashes from the devicename if there are any.
 126          */
 127         checkpath(dir, mntpath);
 128         rmslashes(dev, dev);
 129
 130         args.fspec = dev;
 131         args.export.ex_root = 65534;    /* unchecked anyway on DOS fs */
 132         if (mntflags & MNT_RDONLY)
 133                 args.export.ex_flags = MNT_EXRDONLY;
 134         else
 135                 args.export.ex_flags = 0;
 136         if (!set_gid || !set_uid || !set_mask) {
 137                 if (stat(mntpath, &sb) == -1)
 138                         err(EX_OSERR, "stat %s", mntpath);
 139
 140                 if (!set_uid)
 141                         args.uid = sb.st_uid;
 142                 if (!set_gid)
 143                         args.gid = sb.st_gid;
 144                 if (!set_mask)
 145                         args.mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
 146         }
 147
 148 #if __FreeBSD_version >= 300000 || defined(__DragonFly__)
 149         error = getvfsbyname("ntfs", &vfc);
 150         if(error && vfsisloadable("ntfs")) {
 151                 if(vfsload("ntfs"))
 152 #else
 153         vfc = getvfsbyname("ntfs");
 154         if(!vfc && vfsisloadable("ntfs")) {
 155                 if(vfsload("ntfs"))
 156 #endif
 157                         err(EX_OSERR, "vfsload(ntfs)");
 158                 endvfsent();    /* clear cache */
 159 #if __FreeBSD_version >= 300000 || defined(__DragonFly__)
 160                 error = getvfsbyname("ntfs", &vfc);
 161 #else
 162                 vfc = getvfsbyname("ntfs");
 163 #endif
 164         }
 165 #if __FreeBSD_version >= 300000 || defined(__DragonFly__)
 166         if (error)
 167 #else
 168         if (!vfc)
 169 #endif
 170                 errx(EX_OSERR, "ntfs filesystem is not available");
 171
 172 #if __FreeBSD_version >= 300000 || defined(__DragonFly__)
 173         if (mount(vfc.vfc_name, mntpath, mntflags, &args) < 0)
 174 #else
 175         if (mount(vfc->vfc_index, mntpath, mntflags, &args) < 0)
 176 #endif
 177                 err(EX_OSERR, "%s", dev);
 178
 179         exit (0);
 180 }
 181
 182 gid_t
 183 a_gid(char *s)
 184 {
 185         struct group *gr;
 186         char *gname;
 187         gid_t gid;
 188
 189         if ((gr = getgrnam(s)) != NULL)
 190                 gid = gr->gr_gid;
 191         else {
 192                 for (gname = s; *s && isdigit(*s); ++s);
 193                 if (!*s)
 194                         gid = atoi(gname);
 195                 else
 196                         errx(EX_NOUSER, "unknown group id: %s", gname);
 197         }
 198         return (gid);
 199 }
 200
 201 uid_t
 202 a_uid(char *s)
 203 {
 204         struct passwd *pw;
 205         char *uname;
 206         uid_t uid;
 207
 208         if ((pw = getpwnam(s)) != NULL)
 209                 uid = pw->pw_uid;
 210         else {
 211                 for (uname = s; *s && isdigit(*s); ++s);
 212                 if (!*s)
 213                         uid = atoi(uname);
 214                 else
 215                         errx(EX_NOUSER, "unknown user id: %s", uname);
 216         }
 217         return (uid);
 218 }
 219
 220 mode_t
 221 a_mask(char *s)
 222 {
 223         int done, rv=0;
 224         char *ep;
 225
 226         done = 0;
 227         if (*s >= '0' && *s <= '7') {
 228                 done = 1;
 229                 rv = strtol(optarg, &ep, 8);
 230         }
 231         if (!done || rv < 0 || *ep)
 232                 errx(EX_USAGE, "invalid file mode: %s", s);
 233         return (rv);
 234 }
 235
 236 void
 237 usage(void)
 238 {
 239         fprintf(stderr, "usage: mount_ntfs [-a] [-i] [-u user] [-g group] [-m mask] [-W u2wtable] bdev dir\n");
 240         exit(EX_USAGE);
 241 }
 242
 243 void
 244 load_u2wtable (struct ntfs_args *pargs, char *name)
 245 {
 246         FILE *f;
 247         int i, j, code[8];
 248         size_t line = 0;
 249         char buf[128];
 250         char *fn, *s, *p;
 251
 252         if (*name == '/')
 253                 fn = name;
 254         else {
 255                 snprintf(buf, sizeof(buf), "/usr/libdata/msdosfs/%s", name);
 256                 buf[127] = '\0';
 257                 fn = buf;
 258         }
 259         if ((f = fopen(fn, "r")) == NULL)
 260                 err(EX_NOINPUT, "%s", fn);
 261         p = NULL;
 262         for (i = 0; i < 16; i++) {
 263                 do {
 264                         if (p != NULL) free(p);
 265                         if ((p = s = fparseln(f, NULL, &line, NULL, 0)) == NULL)
 266                                 errx(EX_DATAERR, "can't read u2w table row %d near line %zu", i, line);
 267                         while (isspace((unsigned char)*s))
 268                                 s++;
 269                 } while (*s == '\0');
 270                 if (sscanf(s, "%i%i%i%i%i%i%i%i",
 271 code, code + 1, code + 2, code + 3, code + 4, code + 5, code + 6, code + 7) != 8)
 272                         errx(EX_DATAERR, "u2w table: missing item(s) in row %d, line %zu", i, line);
 273                 for (j = 0; j < 8; j++)
 274                         pargs->u2w[i * 8 + j] = code[j];
 275         }
 276         for (i = 0; i < 16; i++) {
 277                 do {
 278                         free(p);
 279                         if ((p = s = fparseln(f, NULL, &line, NULL, 0)) == NULL)
 280                                 errx(EX_DATAERR, "can't read d2u table row %d near line %zu", i, line);
 281                         while (isspace((unsigned char)*s))
 282                                 s++;
 283                 } while (*s == '\0');
 284                 if (sscanf(s, "%i%i%i%i%i%i%i%i",
 285 code, code + 1, code + 2, code + 3, code + 4, code + 5, code + 6, code + 7) != 8)
 286                         errx(EX_DATAERR, "d2u table: missing item(s) in row %d, line %zu", i, line);
 287                 for (j = 0; j < 8; j++)
 288                         /* pargs->d2u[i * 8 + j] = code[j] */;
 289         }
 290         for (i = 0; i < 16; i++) {
 291                 do {
 292                         free(p);
 293                         if ((p = s = fparseln(f, NULL, &line, NULL, 0)) == NULL)
 294                                 errx(EX_DATAERR, "can't read u2d table row %d near line %zu", i, line);
 295                         while (isspace((unsigned char)*s))
 296                                 s++;
 297                 } while (*s == '\0');
 298                 if (sscanf(s, "%i%i%i%i%i%i%i%i",
 299 code, code + 1, code + 2, code + 3, code + 4, code + 5, code + 6, code + 7) != 8)
 300                         errx(EX_DATAERR, "u2d table: missing item(s) in row %d, line %zu", i, line);
 301                 for (j = 0; j < 8; j++)
 302                         /* pargs->u2d[i * 8 + j] = code[j] */;
 303         }
 304         free(p);
 305         fclose(f);
 306 }
 307