usr/src/cmd/fs.d/hsfs/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 <unistd.h>     /* defines F_LOCK for lockf */
  33 #include <stdlib.h>     /* for getopt(3) */
  34 #include <signal.h>
  35 #include <locale.h>
  36 #include <fslib.h>
  37 #include <sys/types.h>
  38 #include <errno.h>
  39 #include <sys/mnttab.h>
  40 #include <sys/mntent.h>
  41 #include <sys/mount.h>
  42 #include <sys/vfs.h>
  43 #include <sys/fs/hsfs_susp.h>
  44 #include <sys/fs/hsfs_rrip.h>
  45
  46 extern int optind;
  47 extern char *optarg;
  48
  49 #define NAME_MAX        64
  50
  51 static int qflg         = 0;    /* quiet option - don't flag bad options */
  52
  53 static char fstype[] = MNTTYPE_HSFS;
  54
  55 static char typename[NAME_MAX], *myname;
  56
  57 static void rpterr(char *, char *);
  58 static void usage(void);
  59
  60 int
  61 main(int argc, char **argv)
  62 {
  63         char *options, *value;
  64         char *special, *mountp;
  65         struct mnttab mm;
  66         int c;
  67         char    obuff[MAX_MNTOPT_STR];
  68         char    saved_input_options[MAX_MNTOPT_STR];
  69         int hsfs_flags;
  70
  71         int flags;
  72         int Oflg = 0;   /* Overlay mounts */
  73
  74         (void) setlocale(LC_ALL, "");
  75
  76 #if !defined(TEXT_DOMAIN)
  77 #define TEXT_DOMAIN "SYS_TEST"
  78 #endif
  79         (void) textdomain(TEXT_DOMAIN);
  80
  81         myname = strrchr(argv[0], '/');
  82         if (myname)
  83                 myname++;
  84         else
  85                 myname = argv[0];
  86         snprintf(typename, sizeof (typename), "%s %s", fstype, myname);
  87         argv[0] = typename;
  88
  89         /*
  90          * Check for arguments requiring special handling.  Ignore
  91          * unrecognized options.
  92          */
  93         strcpy(obuff, "ro");    /* default */
  94         while ((c = getopt(argc, argv, "rmOq")) != EOF) {
  95                 switch (c) {
  96                         case 'O':
  97                                 Oflg++;
  98                                 break;
  99                         case 'r':
 100                                 /* accept for backwards compatibility */
 101                                 break;
 102                         case 'm':
 103                                 break;
 104                         case 'q':
 105                                 qflg++;
 106                                 break;
 107
 108                 }
 109         }
 110
 111         if ((argc - optind) != 2)
 112                 usage();
 113
 114         special = argv[optind++];
 115         mountp = argv[optind++];
 116
 117         /*
 118          * Force readonly.  obuff is guaranteed to have something in
 119          * it.  We might end up with "ro,ro", but that's acceptable.
 120          */
 121         flags = MS_RDONLY;
 122
 123         if ((strlen(obuff) + strlen(MNTOPT_RO) + 2) > MAX_MNTOPT_STR) {
 124                 (void) fprintf(stderr, gettext("%s: option set too long\n"),
 125                     myname);
 126                 exit(1);
 127         }
 128
 129         strcat(obuff, ",");
 130         strcat(obuff, MNTOPT_RO);
 131
 132         flags |= Oflg ? MS_OVERLAY : 0;
 133
 134         signal(SIGHUP,  SIG_IGN);
 135         signal(SIGQUIT, SIG_IGN);
 136         signal(SIGINT,  SIG_IGN);
 137
 138         /*
 139          * Save a copy of the options to compare with the options that
 140          * were actually recognized and supported by the kernel.
 141          */
 142
 143         (void) strcpy(saved_input_options, obuff);
 144
 145         /*
 146          * Perform the mount.
 147          */
 148
 149         if (mount(special, mountp, flags | MS_OPTIONSTR, fstype, NULL, 0,
 150                 obuff, sizeof (obuff)) == -1) {
 151                 rpterr(special, mountp);
 152                 exit(31+2);
 153         }
 154
 155         if (!qflg) {
 156                 cmp_requested_to_actual_options(saved_input_options, obuff,
 157                         special, mountp);
 158         }
 159
 160         exit(0);
 161         /* NOTREACHED */
 162 }
 163
 164
 165 static void
 166 rpterr(char *bs, char *mp)
 167 {
 168         switch (errno) {
 169         case EPERM:
 170                 (void) fprintf(stderr, gettext("%s: insufficient privileges\n"),
 171                     myname);
 172                 break;
 173         case ENXIO:
 174                 (void) fprintf(stderr, gettext("%s: %s no such device\n"),
 175                     myname, bs);
 176                 break;
 177         case ENOTDIR:
 178                 (void) fprintf(stderr, gettext("%s: %s not a directory\n\tor a "
 179                     "component of %s is not a directory\n"), myname, mp, bs);
 180                 break;
 181         case ENOENT:
 182                 (void) fprintf(stderr,
 183                     gettext("%s: %s or %s, no such file or directory\n"),
 184                     myname, bs, mp);
 185                 break;
 186         case EINVAL:
 187                 (void) fprintf(stderr, gettext("%s: %s is not an hsfs file "
 188                     "system.\n"), typename, bs);
 189                 break;
 190         case EBUSY:
 191                 (void) fprintf(stderr,
 192                     gettext("%s: %s is already mounted or %s is busy\n"),
 193                     myname, bs, mp);
 194                 break;
 195         case ENOTBLK:
 196                 (void) fprintf(stderr,
 197                     gettext("%s: %s not a block device\n"), myname, bs);
 198                 break;
 199         case EROFS:
 200                 (void) fprintf(stderr, gettext("%s: %s write-protected\n"),
 201                     myname, bs);
 202                 break;
 203         case ENOSPC:
 204                 (void) fprintf(stderr,
 205                     gettext("%s: %s is corrupted. needs checking\n"),
 206                     myname, bs);
 207                 break;
 208         default:
 209                 perror(myname);
 210                 (void) fprintf(stderr, gettext("%s: cannot mount %s\n"), myname,
 211                     bs);
 212         }
 213 }
 214
 215
 216 static void
 217 usage()
 218 {
 219         char *opts;
 220
 221 opts = "{-r | -o ro | -o nrr | -o nosuid | -o notraildot | -o nomaplcase}";
 222         (void) fprintf(stdout,
 223 gettext("hsfs usage: mount [-F hsfs] %s {special | mount_point}\n"), opts);
 224         (void) fprintf(stdout,
 225 gettext("hsfs usage: mount [-F hsfs] %s special mount_point\n"), opts);
 226         exit(32);
 227 }