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  *
  33  */
  34
  35 #include <sys/param.h>
  36 #define NTFS
  37 #include <sys/mount.h>
  38 #include <sys/module.h>
  39 #include <sys/linker.h>
  40 #include <sys/iconv.h>
  41 #include <sys/stat.h>
  42 #include <vfs/ntfs/ntfsmount.h>
  43 #include <ctype.h>
  44 #include <err.h>
  45 #include <grp.h>
  46 #include <mntopts.h>
  47 #include <pwd.h>
  48 #include <stdio.h>
  49 #include <stdlib.h>
  50 #include <string.h>
  51 #include <sysexits.h>
  52 #include <unistd.h>
  53 #include <libutil.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 int
  66 set_charset(struct ntfs_args *pargs, const char *cs_local);
  67
  68 int
  69 main(int argc, char **argv)
  70 {
  71         struct ntfs_args args;
  72         struct stat sb;
  73         int c, mntflags, set_gid, set_uid, set_mask, error;
  74         char *dev, *dir, mntpath[MAXPATHLEN];
  75         struct vfsconf vfc;
  76         const char *quirk;
  77         char *cs_local = NULL;
  78
  79         mntflags = set_gid = set_uid = set_mask = 0;
  80         memset(&args, '\0', sizeof(args));
  81
  82         while ((c = getopt(argc, argv, "aiu:g:m:o:C:")) !=  -1) {
  83                 switch (c) {
  84                 case 'u':
  85                         args.uid = a_uid(optarg);
  86                         set_uid = 1;
  87                         break;
  88                 case 'g':
  89                         args.gid = a_gid(optarg);
  90                         set_gid = 1;
  91                         break;
  92                 case 'm':
  93                         args.mode = a_mask(optarg);
  94                         set_mask = 1;
  95                         break;
  96                 case 'i':
  97                         args.flag |= NTFS_MFLAG_CASEINS;
  98                         break;
  99                 case 'a':
 100                         args.flag |= NTFS_MFLAG_ALLNAMES;
 101                         break;
 102                 case 'o':
 103                         getmntopts(optarg, mopts, &mntflags, 0);
 104                         break;
 105                 case 'C':
 106                         quirk = kiconv_quirkcs(optarg, KICONV_VENDOR_MICSFT);
 107                         cs_local = strdup(quirk);
 108                         if (set_charset(&args, cs_local) == -1)
 109                                 err(EX_OSERR, "ntfs_iconv");
 110                         args.flag |= NTFS_MFLAG_KICONV;
 111                         mntflags |= MNT_RDONLY;
 112                         break;
 113                 case '?':
 114                 default:
 115                         usage();
 116                         break;
 117                 }
 118         }
 119
 120         if (optind + 2 != argc)
 121                 usage();
 122
 123         dev = argv[optind];
 124         dir = argv[optind + 1];
 125
 126         /*
 127          * Resolve the mountpoint with realpath(3) and remove unnecessary
 128          * slashes from the devicename if there are any.
 129          */
 130         checkpath(dir, mntpath);
 131         rmslashes(dev, dev);
 132
 133         args.fspec = dev;
 134         args.export.ex_root = 65534;    /* unchecked anyway on DOS fs */
 135         if (mntflags & MNT_RDONLY)
 136                 args.export.ex_flags = MNT_EXRDONLY;
 137         else
 138                 args.export.ex_flags = 0;
 139         if (!set_gid || !set_uid || !set_mask) {
 140                 if (stat(mntpath, &sb) == -1)
 141                         err(EX_OSERR, "stat %s", mntpath);
 142
 143                 if (!set_uid)
 144                         args.uid = sb.st_uid;
 145                 if (!set_gid)
 146                         args.gid = sb.st_gid;
 147                 if (!set_mask)
 148                         args.mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
 149         }
 150
 151         error = getvfsbyname("ntfs", &vfc);
 152         if(error && vfsisloadable("ntfs")) {
 153                 if(vfsload("ntfs"))
 154                         err(EX_OSERR, "vfsload(ntfs)");
 155                 endvfsent();    /* clear cache */
 156                 error = getvfsbyname("ntfs", &vfc);
 157         }
 158         if (error)
 159                 errx(EX_OSERR, "ntfs filesystem is not available");
 160
 161         if (mount(vfc.vfc_name, mntpath, mntflags, &args) < 0)
 162                 err(EX_OSERR, "%s", dev);
 163
 164         exit (0);
 165 }
 166
 167 gid_t
 168 a_gid(char *s)
 169 {
 170         struct group *gr;
 171         char *gname;
 172         gid_t gid;
 173
 174         if ((gr = getgrnam(s)) != NULL)
 175                 gid = gr->gr_gid;
 176         else {
 177                 for (gname = s; *s && isdigit(*s); ++s);
 178                 if (!*s)
 179                         gid = atoi(gname);
 180                 else
 181                         errx(EX_NOUSER, "unknown group id: %s", gname);
 182         }
 183         return (gid);
 184 }
 185
 186 uid_t
 187 a_uid(char *s)
 188 {
 189         struct passwd *pw;
 190         char *uname;
 191         uid_t uid;
 192
 193         if ((pw = getpwnam(s)) != NULL)
 194                 uid = pw->pw_uid;
 195         else {
 196                 for (uname = s; *s && isdigit(*s); ++s);
 197                 if (!*s)
 198                         uid = atoi(uname);
 199                 else
 200                         errx(EX_NOUSER, "unknown user id: %s", uname);
 201         }
 202         return (uid);
 203 }
 204
 205 mode_t
 206 a_mask(char *s)
 207 {
 208         int done, rv=0;
 209         char *ep;
 210
 211         done = 0;
 212         if (*s >= '0' && *s <= '7') {
 213                 done = 1;
 214                 rv = strtol(optarg, &ep, 8);
 215         }
 216         if (!done || rv < 0 || *ep)
 217                 errx(EX_USAGE, "invalid file mode: %s", s);
 218         return (rv);
 219 }
 220
 221 void
 222 usage(void)
 223 {
 224         fprintf(stderr, "usage: mount_ntfs [-a] [-i] [-u user] [-g group] [-m mask] [-C charset] bdev dir\n");
 225         exit(EX_USAGE);
 226 }
 227
 228 int
 229 set_charset(struct ntfs_args *pargs, const char *cs_local)
 230 {
 231         int error;
 232
 233         if (modfind("ntfs_iconv") < 0)
 234                 if (kldload("ntfs_iconv") < 0 || modfind("ntfs_iconv") < 0) {
 235                         warnx( "cannot find or load \"ntfs_iconv\" kernel module");
 236                         return (-1);
 237                 }
 238         strncpy(pargs->cs_ntfs, ENCODING_UNICODE, ICONV_CSNMAXLEN);
 239         strncpy(pargs->cs_local, cs_local, ICONV_CSNMAXLEN);
 240         error = kiconv_add_xlat16_cspairs(pargs->cs_ntfs, cs_local);
 241         if (error)
 242                 return (-1);
 243
 244         return (0);
 245 }