gen_initramfs.sh (469e87e89fd61de804bd29f6dd0380a399b567a7) gen_initramfs.sh (65e00e04e5aea34b256814cfa21b32e3b94a2402)
1#!/bin/sh
2# Copyright (C) Martin Schlemmer <azarah@nosferatu.za.org>
3# Copyright (C) 2006 Sam Ravnborg <sam@ravnborg.org>
4#
5# Released under the terms of the GNU GPL
6#
7# Generate a cpio packed initramfs. It uses gen_init_cpio to generate
1#!/bin/sh
2# Copyright (C) Martin Schlemmer <azarah@nosferatu.za.org>
3# Copyright (C) 2006 Sam Ravnborg <sam@ravnborg.org>
4#
5# Released under the terms of the GNU GPL
6#
7# Generate a cpio packed initramfs. It uses gen_init_cpio to generate
8# the cpio archive, and then compresses it.
8# the cpio archive.
9# This script assumes that gen_init_cpio is located in usr/ directory
10
11# error out on errors
12set -e
13
14usage() {
15cat << EOF
16Usage:
17$0 [-o <file>] [-l <dep_list>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ...
9# This script assumes that gen_init_cpio is located in usr/ directory
10
11# error out on errors
12set -e
13
14usage() {
15cat << EOF
16Usage:
17$0 [-o <file>] [-l <dep_list>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ...
18 -o <file> Create compressed initramfs file named <file> using
19 gen_init_cpio and compressor depending on the extension
18 -o <file> Create initramfs file named <file> by using gen_init_cpio
20 -l <dep_list> Create dependency list named <dep_list>
21 -u <uid> User ID to map to user ID 0 (root).
22 <uid> is only meaningful if <cpio_source> is a
23 directory. "squash" forces all files to uid 0.
24 -g <gid> Group ID to map to group ID 0 (root).
25 <gid> is only meaningful if <cpio_source> is a
26 directory. "squash" forces all files to gid 0.
27 <cpio_source> File list or directory for cpio archive.

--- 129 unchanged lines hidden (view full) ---

157 echo "${dirlist}" | \
158 while read x; do
159 list_parse $x
160 parse $x
161 done
162 fi
163}
164
19 -l <dep_list> Create dependency list named <dep_list>
20 -u <uid> User ID to map to user ID 0 (root).
21 <uid> is only meaningful if <cpio_source> is a
22 directory. "squash" forces all files to uid 0.
23 -g <gid> Group ID to map to group ID 0 (root).
24 <gid> is only meaningful if <cpio_source> is a
25 directory. "squash" forces all files to gid 0.
26 <cpio_source> File list or directory for cpio archive.

--- 129 unchanged lines hidden (view full) ---

156 echo "${dirlist}" | \
157 while read x; do
158 list_parse $x
159 parse $x
160 done
161 fi
162}
163
165# if only one file is specified and it is .cpio file then use it direct as fs
166# if a directory is specified then add all files in given direcotry to fs
167# if a regular file is specified assume it is in gen_init_cpio format
168input_file() {
169 source="$1"
170 if [ -f "$1" ]; then
164input_file() {
165 source="$1"
166 if [ -f "$1" ]; then
167 # If a regular file is specified, assume it is in
168 # gen_init_cpio format
171 header "$1"
169 header "$1"
172 is_cpio="$(echo "$1" | sed 's/^.*\.cpio\(\..*\)\{0,1\}/cpio/')"
173 if [ $2 -eq 0 -a ${is_cpio} = "cpio" ]; then
174 cpio_file=$1
175 echo "$1" | grep -q '^.*\.cpio\..*' && is_cpio_compressed="compressed"
176 [ -n "$dep_list" ] && echo "$1" >> $dep_list
177 return 0
178 fi
179 print_mtime "$1" >> $cpio_list
180 cat "$1" >> $cpio_list
181 if [ -n "$dep_list" ]; then
182 echo "$1 \\" >> $dep_list
183 cat "$1" | while read type dir file perm ; do
184 if [ "$type" = "file" ]; then
185 echo "$file \\" >> $dep_list
186 fi
187 done
188 fi
189 elif [ -d "$1" ]; then
170 print_mtime "$1" >> $cpio_list
171 cat "$1" >> $cpio_list
172 if [ -n "$dep_list" ]; then
173 echo "$1 \\" >> $dep_list
174 cat "$1" | while read type dir file perm ; do
175 if [ "$type" = "file" ]; then
176 echo "$file \\" >> $dep_list
177 fi
178 done
179 fi
180 elif [ -d "$1" ]; then
181 # If a directory is specified then add all files in it to fs
190 dir_filelist "$1"
191 else
192 echo " ${prog}: Cannot open '$1'" >&2
193 exit 1
194 fi
195}
196
197prog=$0
198root_uid=0
199root_gid=0
200dep_list=
182 dir_filelist "$1"
183 else
184 echo " ${prog}: Cannot open '$1'" >&2
185 exit 1
186 fi
187}
188
189prog=$0
190root_uid=0
191root_gid=0
192dep_list=
201cpio_file=
202cpio_list=$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX)
203output="/dev/stdout"
193cpio_list=$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX)
194output="/dev/stdout"
204output_file="/dev/stdout"
205is_cpio_compressed=
206compr="gzip -n -9 -f"
207
208while [ $# -gt 0 ]; do
209 arg="$1"
210 shift
211 case "$arg" in
212 "-l") # files included in initramfs - used by kbuild
213 dep_list="$1"
214 echo "deps_initramfs := \\" > $dep_list
215 shift
216 ;;
195
196while [ $# -gt 0 ]; do
197 arg="$1"
198 shift
199 case "$arg" in
200 "-l") # files included in initramfs - used by kbuild
201 dep_list="$1"
202 echo "deps_initramfs := \\" > $dep_list
203 shift
204 ;;
217 "-o") # generate compressed cpio image named $1
218 output_file="$1"
219 output=$cpio_list
220 echo "$output_file" | grep -q "\.gz$" \
221 && [ -x "`which gzip 2> /dev/null`" ] \
222 && compr="gzip -n -9 -f"
223 echo "$output_file" | grep -q "\.bz2$" \
224 && [ -x "`which bzip2 2> /dev/null`" ] \
225 && compr="bzip2 -9 -f"
226 echo "$output_file" | grep -q "\.lzma$" \
227 && [ -x "`which lzma 2> /dev/null`" ] \
228 && compr="lzma -9 -f"
229 echo "$output_file" | grep -q "\.xz$" \
230 && [ -x "`which xz 2> /dev/null`" ] \
231 && compr="xz --check=crc32 --lzma2=dict=1MiB"
232 echo "$output_file" | grep -q "\.lzo$" \
233 && [ -x "`which lzop 2> /dev/null`" ] \
234 && compr="lzop -9 -f"
235 echo "$output_file" | grep -q "\.lz4$" \
236 && [ -x "`which lz4 2> /dev/null`" ] \
237 && compr="lz4 -l -9 -f"
238 echo "$output_file" | grep -q "\.cpio$" && compr="cat"
205 "-o") # generate cpio image named $1
206 output="$1"
239 shift
240 ;;
241 "-u") # map $1 to uid=0 (root)
242 root_uid="$1"
243 [ "$root_uid" = "-1" ] && root_uid=$(id -u || echo 0)
244 shift
245 ;;
246 "-g") # map $1 to gid=0 (root)

--- 6 unchanged lines hidden (view full) ---

253 exit 0
254 ;;
255 *)
256 case "$arg" in
257 "-"*)
258 unknown_option
259 ;;
260 *) # input file/dir - process it
207 shift
208 ;;
209 "-u") # map $1 to uid=0 (root)
210 root_uid="$1"
211 [ "$root_uid" = "-1" ] && root_uid=$(id -u || echo 0)
212 shift
213 ;;
214 "-g") # map $1 to gid=0 (root)

--- 6 unchanged lines hidden (view full) ---

221 exit 0
222 ;;
223 *)
224 case "$arg" in
225 "-"*)
226 unknown_option
227 ;;
228 *) # input file/dir - process it
261 input_file "$arg" "$#"
229 input_file "$arg"
262 ;;
263 esac
264 ;;
265 esac
266done
267
230 ;;
231 esac
232 ;;
233 esac
234done
235
268# If output_file is set we will generate cpio archive and compress it
236# If output_file is set we will generate cpio archive
269# we are careful to delete tmp files
237# we are careful to delete tmp files
270if [ -z ${cpio_file} ]; then
271 timestamp=
272 if test -n "$KBUILD_BUILD_TIMESTAMP"; then
273 timestamp="$(date -d"$KBUILD_BUILD_TIMESTAMP" +%s || :)"
274 if test -n "$timestamp"; then
275 timestamp="-t $timestamp"
276 fi
238timestamp=
239if test -n "$KBUILD_BUILD_TIMESTAMP"; then
240 timestamp="$(date -d"$KBUILD_BUILD_TIMESTAMP" +%s || :)"
241 if test -n "$timestamp"; then
242 timestamp="-t $timestamp"
277 fi
243 fi
278 cpio_tfile="$(mktemp ${TMPDIR:-/tmp}/cpiofile.XXXXXX)"
279 usr/gen_init_cpio $timestamp ${cpio_list} > ${cpio_tfile}
280else
281 cpio_tfile=${cpio_file}
282fi
244fi
283rm ${cpio_list}
284if [ "${is_cpio_compressed}" = "compressed" ]; then
285 cat ${cpio_tfile} > ${output_file}
286else
287 (cat ${cpio_tfile} | ${compr} - > ${output_file}) \
288 || (rm -f ${output_file} ; false)
289fi
290[ -z ${cpio_file} ] && rm ${cpio_tfile}
291exit 0
245usr/gen_init_cpio $timestamp $cpio_list > $output
246rm $cpio_list