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|
if [ ! "$_MEDIA_COMMON_SUBR" ]; then _MEDIA_COMMON_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/common.subr
f_include $BSDCFG_SHARE/device.subr
f_include $BSDCFG_SHARE/media/any.subr
f_include $BSDCFG_SHARE/struct.subr
############################################################ GLOBALS
#
# Where to mount media
#
MOUNTPOINT=/dist
#
# Media probe values to use for `f_media_get_TYPE media $file $PROBE' or
# `f_device_get media $file $PROBE' (where $PROBE is one of the below values).
#
PROBE_EXIST=1
PROBE_SIZE=2
############################################################ FUNCTIONS
# f_media_open
#
# Returms success if able to initialize the media device.
#
f_media_open()
{
f_dprintf "f_media_open: Verifying and initiliazing media device"
{ # Verify and initialize device media if-defined
f_struct device_media &&
f_media_verify &&
f_device_init device_media
} || return $FAILURE
}
# f_media_close
#
# Shuts down the media device, see f_device_shutdown() from device.subr for
# more details.
#
f_media_close()
{
f_dprintf "f_media_close: Shutting down media device"
f_struct device_media &&
f_device_shutdown device_media
f_struct_free device_media
}
# f_media_verify
#
# Returns success if the media device is available, and if not, prompts the
# user to select a media type. See f_media_get_type() from media/any.subr for
# more details.
#
f_media_verify()
{
f_dprintf "f_media_verify: Verifying media device"
f_struct device_media || f_media_get_type
}
# f_media_generic_get $base $file [$probe_type]
#
# A generic open which follows a well-known "path" of places to look. 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_generic_get()
{
local funcname=f_media_generic_get
local base="$1" file="$2" probe_type="$3"
local fname=f_media_generic_get
f_dprintf "%s: base=[%s] files=[%s] probe_type=%s" \
$fname "$base" "$file" "$probe_type"
local rel path
f_getvar $VAR_RELNAME rel
for path in \
"$base/$file" \
"$base/FreeBSD/$file" \
"$base/releases/$file" \
"$base/$rel/$file" \
; do
if [ -f "$path" -a -r "$path" ]; then
f_dprintf "%s: file exists path=[%s]" $fname "$path"
if [ "$probe_type" = "$PROBE_SIZE" ]; then
local size
f_eval_catch -dk size $funcname stat \
'stat -f %%z "%s"' "$path" || size=-1
f_isinteger "$size" || size=-1
echo $size
fi
[ "$probe_type" ] && return $SUCCESS
cat "$path"
return $?
fi
done
path="$base/releases/$rel/$file" # Final path to try
if [ -f "$path" -a -r "$path" ]; then
f_dprintf "%s: file exists path=[%s]" $fname "$path"
if [ "$probe_type" = "$PROBE_SIZE" ]; then
local size
f_eval_catch -dk size $funcname stat \
'stat -f %%z "%s"' "$path" || size=-1
f_isinteger "$size" || size=-1
echo $size
fi
[ "$probe_type" ] && return $SUCCESS
elif [ "$probe_type" ]; then
[ "$probe_type" = "$PROBE_SIZE" ] && echo "-1"
return $FAILURE
fi
cat "$base/releases/$rel/$file" # Final path to try
}
############################################################ MAIN
f_dprintf "%s: Successfully loaded." media/common.subr
fi # ! $_MEDIA_COMMON_SUBR
|
