usr/src/cmd/fs.d/udfs/mount/mount.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <ctype.h>
  30 #include <string.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>     /* for getopt(3) */
  33 #include <signal.h>
  34 #include <locale.h>
  35 #include <fslib.h>
  36 #include <errno.h>
  37 #include <sys/types.h>
  38 #include <sys/mnttab.h>
  39 #include <sys/mount.h>
  40
  41 #define FSTYPE          "udfs"
  42 #define NAME_MAX        64
  43
  44 static int roflag = 0;
  45 static int mflag = 0;
  46 static int Oflag = 0;
  47 static int qflag = 0;
  48
  49 static char  optbuf[MAX_MNTOPT_STR] = { '\0', };
  50 static int   optsize = 0;
  51
  52 static char fstype[] = FSTYPE;
  53
  54 static char typename[NAME_MAX], *myname;
  55
  56 static void do_mount(char *, char *, int);
  57 static void rpterr(char *, char *);
  58 static void usage(void);
  59
  60 int
  61 main(int argc, char **argv)
  62 {
  63         char *special, *mountp;
  64         int flags = 0;
  65         int c;
  66
  67         (void) setlocale(LC_ALL, "");
  68
  69 #if !defined(TEXT_DOMAIN)
  70 #define TEXT_DOMAIN "SYS_TEST"
  71 #endif
  72         (void) textdomain(TEXT_DOMAIN);
  73
  74         myname = strrchr(argv[0], '/');
  75         if (myname) {
  76                 myname++;
  77         } else {
  78                 myname = argv[0];
  79         }
  80         (void) snprintf(typename, sizeof (typename), "%s %s", fstype, myname);
  81         argv[0] = typename;
  82
  83         /* check for proper arguments */
  84
  85         while ((c = getopt(argc, argv, "mo:rOq")) != EOF) {
  86                 switch (c) {
  87                 case 'm':
  88                         mflag++;
  89                         break;
  90                 case 'o':
  91                         if (strlcpy(optbuf, optarg, sizeof (optbuf)) >=
  92                             sizeof (optbuf)) {
  93                                 (void) fprintf(stderr,
  94                                     gettext("%s: Invalid argument: %s\n"),
  95                                     myname, optarg);
  96                                 return (2);
  97                         }
  98                         optsize = strlen(optbuf);
  99                         break;
 100                 case 'r':
 101                         roflag++;
 102                         break;
 103                 case 'O':
 104                         Oflag++;
 105                         break;
 106                 case 'q':
 107                         qflag = 1;
 108                         break;
 109                 default :
 110                         break;
 111                 }
 112         }
 113
 114         if ((argc - optind) != 2)
 115                 usage();
 116
 117         special = argv[optind++];
 118         mountp = argv[optind++];
 119
 120         if (roflag)
 121                 flags = MS_RDONLY;
 122
 123         if (optsize > 0) {
 124                 struct mnttab m;
 125
 126                 m.mnt_mntopts = optbuf;
 127                 if (hasmntopt(&m, "m"))
 128                         mflag++;
 129         }
 130
 131         flags |= (Oflag ? MS_OVERLAY : 0);
 132         flags |= (mflag ? MS_NOMNTTAB : 0);
 133
 134
 135         /*
 136          *      Perform the mount.
 137          *      Only the low-order bit of "roflag" is used by the system
 138          *      calls (to denote read-only or read-write).
 139          */
 140         do_mount(special, mountp, flags);
 141         return (0);
 142 }
 143
 144
 145 static void
 146 rpterr(char *bs, char *mp)
 147 {
 148         switch (errno) {
 149         case EPERM:
 150                 (void) fprintf(stderr,
 151                         gettext("%s: insufficient privileges\n"), myname);
 152                 break;
 153         case ENXIO:
 154                 (void) fprintf(stderr,
 155                         gettext("%s: %s no such device\n"), myname, bs);
 156                 break;
 157         case ENOTDIR:
 158                 (void) fprintf(stderr,
 159                         gettext("%s: %s not a directory\n\t"
 160                                 "or a component of %s is not a directory\n"),
 161                     myname, mp, bs);
 162                 break;
 163         case ENOENT:
 164                 (void) fprintf(stderr,
 165                         gettext("%s: %s or %s, no such file or directory\n"),
 166                         myname, bs, mp);
 167                 break;
 168         case EINVAL:
 169                 (void) fprintf(stderr,
 170                         gettext("%s: %s is not an udfs file system.\n"),
 171                         typename, bs);
 172                 break;
 173         case EBUSY:
 174                 (void) fprintf(stderr,
 175                         gettext("%s: %s is already mounted or %s is busy\n"),
 176                         myname, bs, mp);
 177                 break;
 178         case ENOTBLK:
 179                 (void) fprintf(stderr,
 180                         gettext("%s: %s not a block device\n"), myname, bs);
 181                 break;
 182         case EROFS:
 183                 (void) fprintf(stderr,
 184                         gettext("%s: %s write-protected\n"),
 185                         myname, bs);
 186                 break;
 187         case ENOSPC:
 188                 (void) fprintf(stderr,
 189                         gettext("%s: %s is corrupted. needs checking\n"),
 190                         myname, bs);
 191                 break;
 192         default:
 193                 perror(myname);
 194                 (void) fprintf(stderr,
 195                         gettext("%s: cannot mount %s\n"), myname, bs);
 196         }
 197 }
 198
 199
 200 static void
 201 do_mount(char *special, char *mountp, int flag)
 202 {
 203         char *savedoptbuf;
 204
 205         if ((savedoptbuf = strdup(optbuf)) == NULL) {
 206                 (void) fprintf(stderr, gettext("%s: out of memory\n"),
 207                     myname);
 208                 exit(2);
 209         }
 210         if (mount(special, mountp, flag | MS_DATA | MS_OPTIONSTR,
 211             fstype, NULL, 0, optbuf, MAX_MNTOPT_STR) == -1) {
 212                 rpterr(special, mountp);
 213                 exit(31+2);
 214         }
 215         if (optsize && !qflag)
 216                 cmp_requested_to_actual_options(savedoptbuf, optbuf,
 217                     special, mountp);
 218 }
 219
 220
 221 static void
 222 usage(void)
 223 {
 224         (void) fprintf(stdout, gettext("udfs usage:\n"
 225                         "mount [-F udfs] [generic options] "
 226                         "[-o suboptions] {special | mount_point}\n"));
 227         (void) fprintf(stdout, gettext("\tsuboptions are: \n"
 228                         "\t     ro,rw,nosuid,remount,m\n"));
 229         (void) fprintf(stdout, gettext(
 230                         "\t     only one of ro, rw can be "
 231                         "used at the same time\n"));
 232         (void) fprintf(stdout, gettext(
 233                         "\t     remount can be used only with rw\n"));
 234
 235         exit(32);
 236 }