usr/src/cmd/fs.d/fd/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 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 #include        <stdio.h>
  34 #include        <stdlib.h>
  35 #include        <signal.h>
  36 #include        <string.h>
  37 #include        <unistd.h>
  38 #include        <errno.h>
  39 #include        <sys/mnttab.h>
  40 #include        <sys/mount.h>
  41 #include        <sys/types.h>
  42 #include        <locale.h>
  43 #include        <fslib.h>
  44
  45 #define NAME_MAX        64      /* sizeof "fstype myname" */
  46
  47 #define FSTYPE          "fd"
  48
  49 static char  optbuf[MAX_MNTOPT_STR] = { '\0', };
  50 static int   optsize = 0;
  51
  52 static int      flags = 0;
  53 static int      mflg = 0;
  54 static int      qflg = 0;
  55
  56 static char     typename[NAME_MAX], *myname;
  57 static char     fstype[] = FSTYPE;
  58
  59 static void usage(void);
  60 static void do_mount(char *, char *, int);
  61
  62 int
  63 main(int argc, char **argv)
  64 {
  65         char    *special, *mountp;
  66         int     errflag = 0;
  67         int     cc;
  68
  69         (void) setlocale(LC_ALL, "");
  70
  71 #if !defined(TEXT_DOMAIN)
  72 #define TEXT_DOMAIN "SYS_TEST"
  73 #endif
  74         (void) textdomain(TEXT_DOMAIN);
  75
  76         myname = strrchr(argv[0], '/');
  77         if (myname)
  78                 myname++;
  79         else
  80                 myname = argv[0];
  81         (void) snprintf(typename, sizeof (typename), "%s %s", fstype, myname);
  82         argv[0] = typename;
  83
  84         /*
  85          *      check for proper arguments
  86          */
  87
  88         while ((cc = getopt(argc, argv, "o:rmOq")) != -1)
  89                 switch (cc) {
  90                 case 'r':
  91                         if (flags & MS_RDONLY)
  92                                 errflag = 1;
  93                         else
  94                                 flags |= MS_RDONLY;
  95                         break;
  96                 case 'O':
  97                         flags |= MS_OVERLAY;
  98                         break;
  99                 case 'q':
 100                         qflg = 1;
 101                         break;
 102                 case 'm':
 103                         mflg++;
 104                         break;
 105                 case 'o':
 106                         if (strlcpy(optbuf, optarg, sizeof (optbuf)) >=
 107                             sizeof (optbuf)) {
 108                                 (void) fprintf(stderr,
 109                                     gettext("%s: Invalid argument: %s\n"),
 110                                     myname, optarg);
 111                                 return (2);
 112                         }
 113                         optsize = strlen(optbuf);
 114                         break;
 115                 default:
 116                 case '?':
 117                         errflag = 1;
 118                         break;
 119                 }
 120
 121         /*
 122          *      There must be at least 2 more arguments, the
 123          *      special file and the directory.
 124          */
 125
 126         if (((argc - optind) != 2) || (errflag))
 127                 usage();
 128
 129         special = argv[optind++];
 130         mountp = argv[optind++];
 131
 132         /*
 133          *      Perform the mount.
 134          *      Only the low-order bit of "flags" is used by the system
 135          *      calls (to denote read-only or read-write).
 136          */
 137         if (mflg)
 138                 flags |= MS_NOMNTTAB;
 139         do_mount(special, mountp, flags);
 140         exit(0);
 141         /* NOTREACHED */
 142 }
 143
 144 static void
 145 rpterr(char *bs, char *mp)
 146 {
 147         switch (errno) {
 148         case EPERM:
 149                 (void) fprintf(stderr,
 150                     gettext("%s: insufficient privileges\n"), myname);
 151                 break;
 152         case ENXIO:
 153                 (void) fprintf(stderr,
 154                         gettext("%s: %s no such device\n"), myname, bs);
 155                 break;
 156         case ENOTDIR:
 157                 (void) fprintf(stderr,
 158                     gettext("%s: %s not a directory\n"
 159                     "\tor a component of %s is not a directory\n"),
 160                         myname, mp, bs);
 161                 break;
 162         case ENOENT:
 163                 (void) fprintf(stderr,
 164                         gettext("%s: %s or %s, no such file or directory\n"),
 165                         myname, bs, mp);
 166                 break;
 167         case EINVAL:
 168                 (void) fprintf(stderr, gettext("%s: %s is not this fstype.\n"),
 169                         myname, bs);
 170                 break;
 171         case EBUSY:
 172                 (void) fprintf(stderr,
 173                         gettext("%s: %s is already mounted or %s is busy\n"),
 174                         myname, bs, mp);
 175                 break;
 176         case ENOTBLK:
 177                 (void) fprintf(stderr, gettext("%s: %s not a block device\n"),
 178                         myname, bs);
 179                 break;
 180         case EROFS:
 181                 (void) fprintf(stderr,
 182                         gettext("%s: %s write-protected\n"), myname, bs);
 183                 break;
 184         case ENOSPC:
 185                 (void) fprintf(stderr,
 186                         gettext("%s: the state of %s is not okay\n"
 187                             "\tand it was attempted to mount read/write\n"),
 188                         myname, bs);
 189                 break;
 190         default:
 191                 perror(myname);
 192                 (void) fprintf(stderr, gettext("%s: cannot mount %s\n"),
 193                     myname, bs);
 194         }
 195 }
 196
 197
 198 static void
 199 do_mount(char *special, char *mountp, int rflag)
 200 {
 201         char *savedoptbuf;
 202
 203         if ((savedoptbuf = strdup(optbuf)) == NULL) {
 204                 (void) fprintf(stderr, gettext("%s: out of memory\n"),
 205                     myname);
 206                 exit(2);
 207         }
 208         if (mount(special, mountp, rflag | MS_OPTIONSTR,
 209                 fstype, NULL, 0, optbuf, MAX_MNTOPT_STR)) {
 210                 rpterr(special, mountp);
 211                 exit(2);
 212         }
 213         if (optsize && !qflg)
 214                 cmp_requested_to_actual_options(savedoptbuf, optbuf,
 215                     special, mountp);
 216 }
 217
 218
 219 static void
 220 usage(void)
 221 {
 222         (void) fprintf(stderr,
 223                 gettext("Usage: %s [-rmOq] [-o specific_options]"
 224                 " special mount_point\n"), myname);
 225         exit(1);
 226 }