156 lines
4.6 KiB
Plaintext
156 lines
4.6 KiB
Plaintext
if [ ! "$_MEDIA_COMMON_SUBR" ]; then _MEDIA_COMMON_SUBR=1
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#
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# Copyright (c) 2012-2013 Devin Teske
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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############################################################ INCLUDES
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BSDCFG_SHARE="/usr/share/bsdconfig"
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. $BSDCFG_SHARE/common.subr || exit 1
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f_dprintf "%s: loading includes..." media/common.subr
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f_include $BSDCFG_SHARE/device.subr
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f_include $BSDCFG_SHARE/media/any.subr
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f_include $BSDCFG_SHARE/struct.subr
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############################################################ GLOBALS
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#
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# Where to mount media
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#
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MOUNTPOINT=/dist
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#
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# Media probe values to use for `f_media_get_TYPE media $file $PROBE' or
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# `f_device_get device_media $file $PROBE' (where $PROBE is one of the below
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# values).
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#
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PROBE_EXIST=1
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PROBE_SIZE=2
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############################################################ FUNCTIONS
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# f_media_open
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#
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# Returms success if able to initialize the media device.
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#
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f_media_open()
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{
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f_dprintf "f_media_open: Verifying and initiliazing media device"
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{ # Verify and initialize device media if-defined
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f_struct device_media &&
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f_media_verify &&
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f_device_init device_media
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} || return $FAILURE
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}
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# f_media_close
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#
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# Shuts down the media device, see f_device_shutdown() from device.subr for
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# more details.
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#
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f_media_close()
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{
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f_dprintf "f_media_close: Shutting down media device"
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f_struct device_media &&
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f_device_shutdown device_media
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f_struct_free device_media
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}
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# f_media_verify
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#
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# Returns success if the media device is available, and if not, prompts the
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# user to select a media type. See f_media_get_type() from media/any.subr for
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# more details.
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#
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f_media_verify()
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{
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f_dprintf "f_media_verify: Verifying media device"
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f_struct device_media || f_media_get_type
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}
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# f_media_generic_get $base $file [$probe_type]
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#
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# A generic open which follows a well-known "path" of places to look. If
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# $probe_type is present and non-NULL, returns success if $file exists. If
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# $probe_type is equal to $PROBE_SIZE, prints the size of $file in bytes to
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# standard-out.
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#
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f_media_generic_get()
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{
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local funcname=f_media_generic_get
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local base="$1" file="$2" probe_type="$3"
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local fname=f_media_generic_get
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f_dprintf "%s: base=[%s] files=[%s] probe_type=%s" \
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$fname "$base" "$file" "$probe_type"
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local rel path
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f_getvar $VAR_RELNAME rel
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for path in \
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"$base/$file" \
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"$base/FreeBSD/$file" \
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"$base/releases/$file" \
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"$base/$rel/$file" \
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; do
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if [ -f "$path" -a -r "$path" ]; then
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f_dprintf "%s: file exists path=[%s]" $fname "$path"
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if [ "$probe_type" = "$PROBE_SIZE" ]; then
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local size
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f_eval_catch -dk size $funcname stat \
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'stat -f %%z "%s"' "$path" || size=-1
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f_isinteger "$size" || size=-1
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echo $size
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fi
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[ "$probe_type" ] && return $SUCCESS
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cat "$path"
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return $?
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fi
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done
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path="$base/releases/$rel/$file" # Final path to try
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if [ -f "$path" -a -r "$path" ]; then
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f_dprintf "%s: file exists path=[%s]" $fname "$path"
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if [ "$probe_type" = "$PROBE_SIZE" ]; then
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local size
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f_eval_catch -dk size $funcname stat \
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'stat -f %%z "%s"' "$path" || size=-1
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f_isinteger "$size" || size=-1
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echo $size
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fi
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[ "$probe_type" ] && return $SUCCESS
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elif [ "$probe_type" ]; then
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[ "$probe_type" = "$PROBE_SIZE" ] && echo "-1"
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return $FAILURE
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fi
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cat "$base/releases/$rel/$file" # Final path to try
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}
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############################################################ MAIN
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f_dprintf "%s: Successfully loaded." media/common.subr
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fi # ! $_MEDIA_COMMON_SUBR
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