freebsd-dev/usr.sbin/bsdconfig/share/media/cdrom.subr

if [ ! "$_MEDIA_CDROM_SUBR" ]; then _MEDIA_CDROM_SUBR=1
#
# Copyright (c) 2012-2013 Devin Teske
# All rights reserved.
#
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
#
# $FreeBSD$
#
############################################################ INCLUDES

BSDCFG_SHARE="/usr/share/bsdconfig"
. $BSDCFG_SHARE/common.subr || exit 1
f_dprintf "%s: loading includes..." media/cdrom.subr
f_include $BSDCFG_SHARE/device.subr
f_include $BSDCFG_SHARE/dialog.subr
f_include $BSDCFG_SHARE/media/common.subr
f_include $BSDCFG_SHARE/struct.subr
f_include $BSDCFG_SHARE/variable.subr

BSDCFG_LIBE="/usr/libexec/bsdconfig"
f_include_lang $BSDCFG_LIBE/include/messages.subr

############################################################ GLOBALS

CDROM_MOUNTED=
CDROM_PREVIOUSLY_MOUNTED=
CDROM_INIT_QUIET=

############################################################ FUNCTIONS

# f_media_set_cdrom
#
# Return success if we both found and set the media type to be a CD.
#
f_media_set_cdrom()
{
	f_media_close

	local devs ndevs
	f_device_find "" $DEVICE_TYPE_CDROM devs
	f_count ndevs $devs

	if [ ${ndevs:=0} -eq 0 ]; then
		f_interactive && f_show_msg "$msg_no_cd_dvd_devices_found"
		return $FAILURE
	elif [ $ndevs -eq 1 ]; then
		f_struct_copy $devs device_media
	else
		local dev
		local title="$msg_choose_a_cd_dvd_type"
		local prompt="$msg_please_select_a_cd_dvd_drive"
		local hline=

		dev=$( f_device_menu \
			"$title" "$prompt" "$hline" $DEVICE_TYPE_CDROM \
			2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD ) ||
			return $FAILURE

		f_struct_copy "$dev" device_media
	fi

	f_struct device_media || return $FAILURE
}

# f_media_init_cdrom $device
#
# Initializes the CDROM media device. Returns success if able to mount the CD
# device using mount_cd9660(8).
#
f_media_init_cdrom()
{
	local funcname=f_media_init_cdrom
	local dev="$1" devname err

	f_struct "$dev" get devname devname || return $FAILURE
	f_dprintf "Init routine called for CDROM device. devname=[%s]" \
	          "$devname"

	if [ "$CDROM_MOUNTED" ]; then
		f_dprintf "CDROM device already mounted."
		return $SUCCESS
	fi

	if [ ! -e "$MOUNTPOINT" ]; then
		f_eval_catch $funcname mkdir 'mkdir -p "%s"' "$MOUNTPOINT" ||
			return $FAILURE
	fi

	if ! f_eval_catch -dk err $funcname mount_cd9660 \
		'mount_cd9660 "%s" "%s"' "$devname" "$MOUNTPOINT"
	then
		err="${err#mount_cd9660: }"; err="${err#$devname: }"
		case "$err" in
		"Device busy")
			# Perhaps the CDROM drive is already mounted as /cdrom
			if f_mounted /cdrom; then
				CDROM_PREVIOUSLY_MOUNTED=1
				MOUNTPOINT=/cdrom
				err=
			fi
			;;
		esac
		case "$err" in
		"") : good ;; # no error
		*)
			[ "$CDROM_INIT_QUIET" ] ||
				f_show_msg "$msg_error_mounting_device" \
				           "$devname" "$MOUNTPOINT" "$err"
			return $FAILURE
		esac
	fi
	CDROM_MOUNTED=1

	: xxx # /cdrom.inf has been deprecated since 9.0-R

	# No other CDROM media validation at this time

	return $SUCCESS
}

# f_media_get_cdrom $device $file [$probe_type]
#
# Returns data from $file on a mounted CDROM device. Similar to cat(1). If
# $probe_type is present and non-NULL, returns success if $file exists. If
# $probe_type is equal to $PROBE_SIZE, prints the size of $file in bytes to
# standard-out.
#
f_media_get_cdrom()
{
	local dev="$1" file="$2" probe_type="$3"
	local name

	$dev get name name
	f_dprintf "f_media_get_cdrom: dev=[%s] file=[%s] probe_type=%s" \
	          "$name" "$file" "$probe_type"

	f_media_generic_get "$MOUNTPOINT" "$file" "$probe_type"
}

# f_media_shutdown_cdrom $device
#
# Shuts down the CDROM device. Return status should be ignored.
#
f_media_shutdown_cdrom()
{
	local funcname=f_media_shutdown_cdrom
	local dev="$1" err

	[ "$CDROM_MOUNTED" ] || return $FAILURE

	if [ "$CDROM_PREVIOUSLY_MOUNTED" ]; then
		CDROM_MOUNTED=
		return $SUCCESS
	fi

	if ! f_eval_catch -dk err $funcname umount \
		'umount -f "%s"' "$MOUNTPOINT"
	then
		err="${err#umount: }"; err="${err#*: }"
		f_show_msg "$msg_could_not_unmount_the_cdrom_dvd" \
		           "$MOUNTPOINT" "$err"
	else
		CDROM_MOUNTED=
	fi
}

# f_media_eject_cdrom $device
#
# Eject the media from the CDROM device. Returns success.
#
f_media_eject_cdrom()
{
	local funcname=f_media_eject_cdrom
	local dev="$1" name devname err

	f_struct "$dev" || return $SUCCESS
	$dev get name name || return $SUCCESS
	$dev get devname devname || return $SUCCESS

	# Don't eject labels
	case "$name" in */*) return $SUCCESS; esac

	f_dprintf "Ejecting CDROM/DVD at %s" "$devname"
	if ! f_eval_catch -dk err $funcname cdcontrol \
		'cdcontrol -f "%s" eject' "$devname"
	then
		f_dprintf "Could not eject the CDROM/DVD from %s: %s" \
		          "$devname" "${err#cdcontrol: }"
	fi
	return $SUCCESS
}

############################################################ MAIN

f_dprintf "%s: Successfully loaded." media/cdrom.subr

fi # ! $_MEDIA_CDROM_SUBR