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