/*      $NetBSD: ops_cdfs.c,v 1.4 2015/01/17 17:46:31 christos Exp $    */

/*
* Copyright (c) 1997-2014 Erez Zadok
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*
* File: am-utils/amd/ops_cdfs.c
*
*/

/*
* High Sierra (CD-ROM) file system
*/

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amd.h>

/* forward declarations */
static char *cdfs_match(am_opts *fo);
static int cdfs_mount(am_node *am, mntfs *mf);
static int cdfs_umount(am_node *am, mntfs *mf);

/*
* Ops structure
*/
am_ops cdfs_ops =
{
 "cdfs",
 cdfs_match,
 0,                            /* cdfs_init */
 cdfs_mount,
 cdfs_umount,
 amfs_error_lookup_child,
 amfs_error_mount_child,
 amfs_error_readdir,
 0,                            /* cdfs_readlink */
 0,                            /* cdfs_mounted */
 0,                            /* cdfs_umounted */
 amfs_generic_find_srvr,
 0,                            /* cdfs_get_wchan */
 FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO,       /* nfs_fs_flags */
#ifdef HAVE_FS_AUTOFS
 AUTOFS_CDFS_FS_FLAGS,
#endif /* HAVE_FS_AUTOFS */
};


/*
* CDFS needs remote filesystem.
*/
static char *
cdfs_match(am_opts *fo)
{
 if (!fo->opt_dev) {
   plog(XLOG_USER, "cdfs: no source device specified");
   return 0;
 }
 dlog("CDFS: mounting device \"%s\" on \"%s\"",
      fo->opt_dev, fo->opt_fs);

 /*
  * Determine magic cookie to put in mtab
  */
 return xstrdup(fo->opt_dev);
}


static int
mount_cdfs(char *mntdir, char *fs_name, char *opts, int on_autofs)
{
 cdfs_args_t cdfs_args;
 mntent_t mnt;
 int genflags, cdfs_flags, retval;

 /*
  * Figure out the name of the file system type.
  */
 MTYPE_TYPE type = MOUNT_TYPE_CDFS;

 memset((voidp) &cdfs_args, 0, sizeof(cdfs_args)); /* Paranoid */
 cdfs_flags = 0;

 /*
  * Fill in the mount structure
  */
 memset((voidp) &mnt, 0, sizeof(mnt));
 mnt.mnt_dir = mntdir;
 mnt.mnt_fsname = fs_name;
 mnt.mnt_type = MNTTAB_TYPE_CDFS;
 mnt.mnt_opts = opts;

#if defined(MNT2_CDFS_OPT_DEFPERM) && defined(MNTTAB_OPT_DEFPERM)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_DEFPERM))
# ifdef MNT2_CDFS_OPT_DEFPERM
   cdfs_flags |= MNT2_CDFS_OPT_DEFPERM;
# else /* not MNT2_CDFS_OPT_DEFPERM */
   cdfs_flags &= ~MNT2_CDFS_OPT_NODEFPERM;
# endif /* not MNT2_CDFS_OPT_DEFPERM */
#endif /* defined(MNT2_CDFS_OPT_DEFPERM) && defined(MNTTAB_OPT_DEFPERM) */

#if defined(MNT2_CDFS_OPT_NODEFPERM) && defined(MNTTAB_OPT_NODEFPERM)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_NODEFPERM))
   cdfs_flags |= MNT2_CDFS_OPT_NODEFPERM;
#endif /* MNTTAB_OPT_NODEFPERM */

#if defined(MNT2_CDFS_OPT_NOVERSION) && defined(MNTTAB_OPT_NOVERSION)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_NOVERSION))
   cdfs_flags |= MNT2_CDFS_OPT_NOVERSION;
#endif /* defined(MNT2_CDFS_OPT_NOVERSION) && defined(MNTTAB_OPT_NOVERSION) */

#if defined(MNT2_CDFS_OPT_RRIP) && defined(MNTTAB_OPT_RRIP)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_RRIP))
   cdfs_flags |= MNT2_CDFS_OPT_RRIP;
#endif /* defined(MNT2_CDFS_OPT_RRIP) && defined(MNTTAB_OPT_RRIP) */

#if defined(MNT2_CDFS_OPT_NORRIP) && defined(MNTTAB_OPT_NORRIP)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_NORRIP))
   cdfs_flags |= MNT2_CDFS_OPT_NORRIP;
#endif /* defined(MNT2_CDFS_OPT_NORRIP) && defined(MNTTAB_OPT_NORRIP) */

#if defined(MNT2_CDFS_OPT_GENS) && defined(MNTTAB_OPT_GENS)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_GENS))
   cdfs_flags |= MNT2_CDFS_OPT_GENS;
#endif /* defined(MNT2_CDFS_OPT_GENS) && defined(MNTTAB_OPT_GENS) */

#if defined(MNT2_CDFS_OPT_EXTATT) && defined(MNTTAB_OPT_EXTATT)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_EXTATT))
   cdfs_flags |= MNT2_CDFS_OPT_EXTATT;
#endif /* defined(MNT2_CDFS_OPT_EXTATT) && defined(MNTTAB_OPT_EXTATT) */

#if defined(MNT2_CDFS_OPT_NOCASETRANS) && defined(MNTTAB_OPT_NOCASETRANS)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_NOCASETRANS))
   cdfs_flags |= MNT2_CDFS_OPT_NOCASETRANS;
#endif /* defined(MNT2_CDFS_OPT_NOCASETRANS) && defined(MNTTAB_OPT_NOCASETRANS) */

#if defined(MNT2_CDFS_OPT_NOJOLIET) && defined(MNTTAB_OPT_NOJOLIET)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_NOJOLIET))
   cdfs_flags |= MNT2_CDFS_OPT_NOJOLIET;
#endif /* defined(MNT2_CDFS_OPT_NOJOLIET) && defined(MNTTAB_OPT_NOJOLIET) */

#if defined(MNT2_CDFS_OPT_RRCASEINS) && defined(MNTTAB_OPT_RRCASEINS)
 if (amu_hasmntopt(&mnt, MNTTAB_OPT_RRCASEINS))
   cdfs_flags |= MNT2_CDFS_OPT_RRCASEINS;
#endif /* defined(MNT2_CDFS_OPT_RRCASEINS) && defined(MNTTAB_OPT_RRCASEINS) */

 genflags = compute_mount_flags(&mnt);
#ifdef HAVE_FS_AUTOFS
 if (on_autofs)
   genflags |= autofs_compute_mount_flags(&mnt);
#endif /* HAVE_FS_AUTOFS */

#ifdef HAVE_CDFS_ARGS_T_FLAGS
 cdfs_args.flags = cdfs_flags;
#endif /* HAVE_CDFS_ARGS_T_FLAGS */

#ifdef HAVE_CDFS_ARGS_T_ISO_FLAGS
 cdfs_args.iso_flags = genflags | cdfs_flags;
#endif /* HAVE_CDFS_ARGS_T_ISO_FLAGS */

#ifdef HAVE_CDFS_ARGS_T_ISO_PGTHRESH
 cdfs_args.iso_pgthresh = hasmntval(&mnt, MNTTAB_OPT_PGTHRESH);
#endif /* HAVE_CDFS_ARGS_T_ISO_PGTHRESH */

#ifdef HAVE_CDFS_ARGS_T_NORRIP
 /* XXX: need to provide norrip mount opt */
 cdfs_args.norrip = 0;         /* use Rock-Ridge Protocol extensions */
#endif /* HAVE_CDFS_ARGS_T_NORRIP */

#ifdef HAVE_CDFS_ARGS_T_SSECTOR
 /* XXX: need to provide ssector mount option */
 cdfs_args.ssector = 0;        /* use 1st session on disk */
#endif /* HAVE_CDFS_ARGS_T_SSECTOR */

#ifdef HAVE_CDFS_ARGS_T_FSPEC
 cdfs_args.fspec = fs_name;
#endif /* HAVE_CDFS_ARGS_T_FSPEC */

 /*
  * Call generic mount routine
  */
 retval = mount_fs(&mnt, genflags, (caddr_t) &cdfs_args, 0, type, 0, NULL, mnttab_file_name, on_autofs);

 return retval;
}


static int
cdfs_mount(am_node *am, mntfs *mf)
{
 int on_autofs = mf->mf_flags & MFF_ON_AUTOFS;
 int error;

 error = mount_cdfs(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs);
 if (error) {
   errno = error;
   plog(XLOG_ERROR, "mount_cdfs: %m");
   return error;
 }
 return 0;
}


static int
cdfs_umount(am_node *am, mntfs *mf)
{
 int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0;

 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags);
}

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