sbin/mount_hpfs/mount_hpfs.c

   1 /*
   2  * Copyright (c) 1994 Christopher G. Demetriou
   3  * Copyright (c) 1999 Semen Ustimenko (semenu@FreeBSD.org)
   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_hpfs/mount_hpfs.c,v 1.1 1999/12/09 19:09:15 semenu Exp $
  32  * $DragonFly: src/sbin/mount_hpfs/mount_hpfs.c,v 1.8 2005/04/03 18:59:24 joerg Exp $
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #include <sys/param.h>
  37 #include <sys/mount.h>
  38 #include <sys/stat.h>
  39 #include <vfs/hpfs/hpfsmount.h>
  40 #include <ctype.h>
  41 #include <err.h>
  42 #include <grp.h>
  43 #include <pwd.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #include <sysexits.h>
  48 #include <unistd.h>
  49
  50 #include "mntopts.h"
  51
  52 static struct mntopt mopts[] = {
  53         MOPT_STDOPTS,
  54         MOPT_NULL
  55 };
  56
  57 static gid_t    a_gid(char *);
  58 static uid_t    a_uid(char *);
  59 static mode_t   a_mask(char *);
  60 static void     usage(void) __dead2;
  61 static void     load_u2wtable(struct hpfs_args *, char *);
  62
  63 int
  64 main(int argc, char **argv)
  65 {
  66         struct hpfs_args args;
  67         struct stat sb;
  68         int c, mntflags, set_gid, set_uid, set_mask,error;
  69         int forcerw = 0;
  70         char *dev, *dir, ndir[MAXPATHLEN+1];
  71         struct vfsconf vfc;
  72
  73         mntflags = set_gid = set_uid = set_mask = 0;
  74         memset(&args, '\0', sizeof(args));
  75
  76         while ((c = getopt(argc, argv, "u:g:m:o:c:W:F")) !=  -1) {
  77                 switch (c) {
  78                 case 'F':
  79                         forcerw=1;
  80                         break;
  81                 case 'u':
  82                         args.uid = a_uid(optarg);
  83                         set_uid = 1;
  84                         break;
  85                 case 'g':
  86                         args.gid = a_gid(optarg);
  87                         set_gid = 1;
  88                         break;
  89                 case 'm':
  90                         args.mode = a_mask(optarg);
  91                         set_mask = 1;
  92                         break;
  93                 case 'o':
  94                         getmntopts(optarg, mopts, &mntflags, 0);
  95                         break;
  96                 case 'W':
  97                         load_u2wtable(&args, optarg);
  98                         args.flags |= HPFSMNT_TABLES;
  99                         break;
 100                 case '?':
 101                 default:
 102                         usage();
 103                         break;
 104                 }
 105         }
 106
 107         if (optind + 2 != argc)
 108                 usage();
 109
 110         if (!(mntflags & MNT_RDONLY) && !forcerw) {
 111                 warnx("Write support is BETA, you need -F flag to enable RW mount!");
 112                 exit (111);
 113         }
 114
 115         dev = argv[optind];
 116         dir = argv[optind + 1];
 117         if (dir[0] != '/') {
 118                 warnx("\"%s\" is a relative path", dir);
 119                 if (getcwd(ndir, sizeof(ndir)) == NULL)
 120                         err(EX_OSERR, "getcwd");
 121                 strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1);
 122                 strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1);
 123                 dir = ndir;
 124                 warnx("using \"%s\" instead", dir);
 125         }
 126
 127         args.fspec = dev;
 128         args.export.ex_root = 65534;    /* unchecked anyway on DOS fs */
 129         if (mntflags & MNT_RDONLY)
 130                 args.export.ex_flags = MNT_EXRDONLY;
 131         else
 132                 args.export.ex_flags = 0;
 133
 134         if (!set_gid || !set_uid || !set_mask) {
 135                 if (stat(dir, &sb) == -1)
 136                         err(EX_OSERR, "stat %s", dir);
 137
 138                 if (!set_uid)
 139                         args.uid = sb.st_uid;
 140                 if (!set_gid)
 141                         args.gid = sb.st_gid;
 142                 if (!set_mask)
 143                         args.mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
 144         }
 145
 146         error = getvfsbyname("hpfs", &vfc);
 147         if(error && vfsisloadable("hpfs")) {
 148                 if(vfsload("hpfs"))
 149                         err(EX_OSERR, "vfsload(hpfs)");
 150                 endvfsent();    /* clear cache */
 151                 error = getvfsbyname("hpfs", &vfc);
 152         }
 153         if (error)
 154                 errx(EX_OSERR, "hpfs filesystem is not available");
 155
 156         if (mount(vfc.vfc_name, dir, mntflags, &args) < 0)
 157                 err(EX_OSERR, "%s", dev);
 158
 159         exit (0);
 160 }
 161
 162 gid_t
 163 a_gid(char *s)
 164 {
 165         struct group *gr;
 166         char *gname;
 167         gid_t gid;
 168
 169         if ((gr = getgrnam(s)) != NULL)
 170                 gid = gr->gr_gid;
 171         else {
 172                 for (gname = s; *s && isdigit(*s); ++s);
 173                 if (!*s)
 174                         gid = atoi(gname);
 175                 else
 176                         errx(EX_NOUSER, "unknown group id: %s", gname);
 177         }
 178         return (gid);
 179 }
 180
 181 uid_t
 182 a_uid(char *s)
 183 {
 184         struct passwd *pw;
 185         char *uname;
 186         uid_t uid;
 187
 188         if ((pw = getpwnam(s)) != NULL)
 189                 uid = pw->pw_uid;
 190         else {
 191                 for (uname = s; *s && isdigit(*s); ++s);
 192                 if (!*s)
 193                         uid = atoi(uname);
 194                 else
 195                         errx(EX_NOUSER, "unknown user id: %s", uname);
 196         }
 197         return (uid);
 198 }
 199
 200 mode_t
 201 a_mask(char *s)
 202 {
 203         int done, rv=0;
 204         char *ep;
 205
 206         done = 0;
 207         if (*s >= '0' && *s <= '7') {
 208                 done = 1;
 209                 rv = strtol(optarg, &ep, 8);
 210         }
 211         if (!done || rv < 0 || *ep)
 212                 errx(EX_USAGE, "invalid file mode: %s", s);
 213         return (rv);
 214 }
 215
 216 void
 217 usage(void)
 218 {
 219         fprintf(stderr, "usage: mount_hpfs [-u user] [-g group] [-m mask] bdev dir\n");
 220         exit(EX_USAGE);
 221 }
 222
 223 void
 224 load_u2wtable (struct hpfs_args *pargs, char *name)
 225 {
 226         FILE *f;
 227         int i, code;
 228         char buf[128];
 229         char *fn;
 230
 231         if (*name == '/')
 232                 fn = name;
 233         else {
 234                 snprintf(buf, sizeof(buf), "/usr/libdata/msdosfs/%s", name);
 235                 buf[127] = '\0';
 236                 fn = buf;
 237         }
 238         if ((f = fopen(fn, "r")) == NULL)
 239                 err(EX_NOINPUT, "%s", fn);
 240         for (i = 0; i < 128; i++) {
 241                 if (fscanf(f, "%i", &code) != 1)
 242                         errx(EX_DATAERR, "u2w: missing item number %d", i);
 243                 /* pargs->u2w[i] = code; */
 244         }
 245         for (i = 0; i < 128; i++) {
 246                 if (fscanf(f, "%i", &code) != 1)
 247                         errx(EX_DATAERR, "d2u: missing item number %d", i);
 248                 pargs->d2u[i] = code;
 249         }
 250         for (i = 0; i < 128; i++) {
 251                 if (fscanf(f, "%i", &code) != 1)
 252                         errx(EX_DATAERR, "u2d: missing item number %d", i);
 253                 pargs->u2d[i] = code;
 254         }
 255         fclose(f);
 256 }