contrib/amd/amd/ops_pcfs.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_pcfs.c,v 1.2 1999/01/10 21:53:50 ezk Exp $
  42  *
  43  */
  44
  45 /*
  46  * PC (MS-DOS) 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 definitions */
  56 static char *pcfs_match(am_opts *fo);
  57 static int pcfs_fmount(mntfs *mf);
  58 static int pcfs_fumount(mntfs *mf);
  59
  60 /*
  61  * Ops structure
  62  */
  63 am_ops pcfs_ops =
  64 {
  65   "pcfs",
  66   pcfs_match,
  67   0,                            /* pcfs_init */
  68   amfs_auto_fmount,
  69   pcfs_fmount,
  70   amfs_auto_fumount,
  71   pcfs_fumount,
  72   amfs_error_lookuppn,
  73   amfs_error_readdir,
  74   0,                            /* pcfs_readlink */
  75   0,                            /* pcfs_mounted */
  76   0,                            /* pcfs_umounted */
  77   find_amfs_auto_srvr,
  78   FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO
  79 };
  80
  81
  82
  83 /*
  84  * PCFS needs remote filesystem.
  85  */
  86 static char *
  87 pcfs_match(am_opts *fo)
  88 {
  89   if (!fo->opt_dev) {
  90     plog(XLOG_USER, "pcfs: no source device specified");
  91     return 0;
  92   }
  93 #ifdef DEBUG
  94   dlog("PCFS: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);
  95 #endif /* DEBUG */
  96
  97   /*
  98    * Determine magic cookie to put in mtab
  99    */
 100   return strdup(fo->opt_dev);
 101 }
 102
 103
 104 static int
 105 mount_pcfs(char *dir, char *fs_name, char *opts)
 106 {
 107   pcfs_args_t pcfs_args;
 108   mntent_t mnt;
 109   int flags;
 110
 111   /*
 112    * Figure out the name of the file system type.
 113    */
 114   MTYPE_TYPE type = MOUNT_TYPE_PCFS;
 115
 116   memset((voidp) &pcfs_args, 0, sizeof(pcfs_args)); /* Paranoid */
 117
 118   /*
 119    * Fill in the mount structure
 120    */
 121   memset((voidp) &mnt, 0, sizeof(mnt));
 122   mnt.mnt_dir = dir;
 123   mnt.mnt_fsname = fs_name;
 124   mnt.mnt_type = MNTTAB_TYPE_PCFS;
 125   mnt.mnt_opts = opts;
 126
 127   flags = compute_mount_flags(&mnt);
 128
 129 #ifdef HAVE_FIELD_PCFS_ARGS_T_FSPEC
 130   pcfs_args.fspec = fs_name;
 131 #endif /* HAVE_FIELD_PCFS_ARGS_T_FSPEC */
 132
 133 #ifdef HAVE_FIELD_PCFS_ARGS_T_MASK
 134   pcfs_args.mask = 0777;        /* this may be the msdos file modes */
 135 #endif /* HAVE_FIELD_PCFS_ARGS_T_MASK */
 136
 137 #ifdef HAVE_FIELD_PCFS_ARGS_T_UID
 138   pcfs_args.uid = 0;            /* root */
 139 #endif /* HAVE_FIELD_PCFS_ARGS_T_UID */
 140
 141 #ifdef HAVE_FIELD_PCFS_ARGS_T_GID
 142   pcfs_args.gid = 0;            /* wheel */
 143 #endif /* HAVE_FIELD_PCFS_ARGS_T_GID */
 144
 145 #ifdef HAVE_FIELD_PCFS_ARGS_T_SECONDSWEST
 146   pcfs_args.secondswest = 0;    /* XXX: fill in correct values */
 147 #endif /* HAVE_FIELD_PCFS_ARGS_T_SECONDSWEST */
 148 #ifdef HAVE_FIELD_PCFS_ARGS_T_DSTTIME
 149   pcfs_args.dsttime = 0;        /* XXX: fill in correct values */
 150 #endif /* HAVE_FIELD_PCFS_ARGS_T_DSTTIME */
 151
 152   /*
 153    * Call generic mount routine
 154    */
 155   return mount_fs(&mnt, flags, (caddr_t) & pcfs_args, 0, type, 0, NULL, mnttab_file_name);
 156 }
 157
 158
 159 static int
 160 pcfs_fmount(mntfs *mf)
 161 {
 162   int error;
 163
 164   error = mount_pcfs(mf->mf_mount, mf->mf_info, mf->mf_mopts);
 165   if (error) {
 166     errno = error;
 167     plog(XLOG_ERROR, "mount_pcfs: %m");
 168     return error;
 169   }
 170
 171   return 0;
 172 }
 173
 174
 175 static int
 176 pcfs_fumount(mntfs *mf)
 177 {
 178   return UMOUNT_FS(mf->mf_mount, mnttab_file_name);
 179 }