contrib/amd/amd/ops_efs.c

   1 /*
   2  * Copyright (c) 1997-1999 Erez Zadok
   3  * Copyright (c) 1990 Jan-Simon Pendry
   4  * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
   5  * Copyright (c) 1990 The Regents of the University of California.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software contributed to Berkeley by
   9  * Jan-Simon Pendry at Imperial College, London.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgment:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  *
  39  *      %W% (Berkeley) %G%
  40  *
  41  * $Id: ops_efs.c,v 1.2 1999/01/10 21:53:49 ezk Exp $
  42  *
  43  */
  44
  45 /*
  46  * Irix UN*X file system: EFS (Extent File System)
  47  */
  48
  49 #ifdef HAVE_CONFIG_H
  50 # include <config.h>
  51 #endif /* HAVE_CONFIG_H */
  52 #include <am_defs.h>
  53 #include <amd.h>
  54
  55 /* forward declarations */
  56 static char *efs_match(am_opts *fo);
  57 static int efs_fmount(mntfs *mf);
  58 static int efs_fumount(mntfs *mf);
  59
  60 /*
  61  * Ops structure
  62  */
  63 am_ops efs_ops =
  64 {
  65   "efs",
  66   efs_match,
  67   0,                            /* efs_init */
  68   amfs_auto_fmount,
  69   efs_fmount,
  70   amfs_auto_fumount,
  71   efs_fumount,
  72   amfs_error_lookuppn,
  73   amfs_error_readdir,
  74   0,                            /* efs_readlink */
  75   0,                            /* efs_mounted */
  76   0,                            /* efs_umounted */
  77   find_amfs_auto_srvr,
  78   FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO
  79 };
  80
  81
  82 /*
  83  * EFS needs local filesystem and device.
  84  */
  85 static char *
  86 efs_match(am_opts *fo)
  87 {
  88
  89   if (!fo->opt_dev) {
  90     plog(XLOG_USER, "efs: no device specified");
  91     return 0;
  92   }
  93
  94 #ifdef DEBUG
  95   dlog("EFS: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);
  96 #endif /* DEBUG */
  97
  98   /*
  99    * Determine magic cookie to put in mtab
 100    */
 101   return strdup(fo->opt_dev);
 102 }
 103
 104
 105 static int
 106 mount_efs(char *dir, char *fs_name, char *opts)
 107 {
 108   efs_args_t efs_args;
 109   mntent_t mnt;
 110   int flags;
 111
 112   /*
 113    * Figure out the name of the file system type.
 114    */
 115   MTYPE_TYPE type = MOUNT_TYPE_EFS;
 116
 117   memset((voidp) &efs_args, 0, sizeof(efs_args)); /* Paranoid */
 118
 119   /*
 120    * Fill in the mount structure
 121    */
 122   memset((voidp) &mnt, 0, sizeof(mnt));
 123   mnt.mnt_dir = dir;
 124   mnt.mnt_fsname = fs_name;
 125   mnt.mnt_type = MNTTAB_TYPE_EFS;
 126   mnt.mnt_opts = opts;
 127
 128   flags = compute_mount_flags(&mnt);
 129
 130 #ifdef HAVE_FIELD_EFS_ARGS_T_FLAGS
 131   efs_args.flags = 0;           /* XXX: fix this to correct flags */
 132 #endif /* HAVE_FIELD_EFS_ARGS_T_FLAGS */
 133 #ifdef HAVE_FIELD_EFS_ARGS_T_FSPEC
 134   efs_args.fspec = fs_name;
 135 #endif /* HAVE_FIELD_EFS_ARGS_T_FSPEC */
 136
 137   /*
 138    * Call generic mount routine
 139    */
 140   return mount_fs(&mnt, flags, (caddr_t) &efs_args, 0, type, 0, NULL, mnttab_file_name);
 141 }
 142
 143
 144 static int
 145 efs_fmount(mntfs *mf)
 146 {
 147   int error;
 148
 149   error = mount_efs(mf->mf_mount, mf->mf_info, mf->mf_mopts);
 150   if (error) {
 151     errno = error;
 152     plog(XLOG_ERROR, "mount_efs: %m");
 153     return error;
 154   }
 155
 156   return 0;
 157 }
 158
 159
 160 static int
 161 efs_fumount(mntfs *mf)
 162 {
 163   return UMOUNT_FS(mf->mf_mount, mnttab_file_name);
 164 }