diff options
Diffstat (limited to 'usr/gen_initramfs.sh')
| -rwxr-xr-x | usr/gen_initramfs.sh | 77 |
1 files changed, 16 insertions, 61 deletions
diff --git a/usr/gen_initramfs.sh b/usr/gen_initramfs.sh index 1efb87bda545..4e6715f8ff7f 100755 --- a/usr/gen_initramfs.sh +++ b/usr/gen_initramfs.sh @@ -5,7 +5,7 @@ # Released under the terms of the GNU GPL # # Generate a cpio packed initramfs. It uses gen_init_cpio to generate -# the cpio archive, and then compresses it. +# the cpio archive. # This script assumes that gen_init_cpio is located in usr/ directory # error out on errors @@ -15,8 +15,7 @@ usage() { cat << EOF Usage: $0 [-o <file>] [-l <dep_list>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ... - -o <file> Create compressed initramfs file named <file> using - gen_init_cpio and compressor depending on the extension + -o <file> Create initramfs file named <file> by using gen_init_cpio -l <dep_list> Create dependency list named <dep_list> -u <uid> User ID to map to user ID 0 (root). <uid> is only meaningful if <cpio_source> is a @@ -162,20 +161,12 @@ dir_filelist() { fi } -# if only one file is specified and it is .cpio file then use it direct as fs -# if a directory is specified then add all files in given direcotry to fs -# if a regular file is specified assume it is in gen_init_cpio format input_file() { source="$1" if [ -f "$1" ]; then + # If a regular file is specified, assume it is in + # gen_init_cpio format header "$1" - is_cpio="$(echo "$1" | sed 's/^.*\.cpio\(\..*\)\{0,1\}/cpio/')" - if [ $2 -eq 0 -a ${is_cpio} = "cpio" ]; then - cpio_file=$1 - echo "$1" | grep -q '^.*\.cpio\..*' && is_cpio_compressed="compressed" - [ -n "$dep_list" ] && echo "$1" >> $dep_list - return 0 - fi print_mtime "$1" >> $cpio_list cat "$1" >> $cpio_list if [ -n "$dep_list" ]; then @@ -187,6 +178,7 @@ input_file() { done fi elif [ -d "$1" ]; then + # If a directory is specified then add all files in it to fs dir_filelist "$1" else echo " ${prog}: Cannot open '$1'" >&2 @@ -198,12 +190,8 @@ prog=$0 root_uid=0 root_gid=0 dep_list= -cpio_file= cpio_list=$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX) output="/dev/stdout" -output_file="/dev/stdout" -is_cpio_compressed= -compr="gzip -n -9 -f" while [ $# -gt 0 ]; do arg="$1" @@ -214,28 +202,8 @@ while [ $# -gt 0 ]; do echo "deps_initramfs := \\" > $dep_list shift ;; - "-o") # generate compressed cpio image named $1 - output_file="$1" - output=$cpio_list - echo "$output_file" | grep -q "\.gz$" \ - && [ -x "`which gzip 2> /dev/null`" ] \ - && compr="gzip -n -9 -f" - echo "$output_file" | grep -q "\.bz2$" \ - && [ -x "`which bzip2 2> /dev/null`" ] \ - && compr="bzip2 -9 -f" - echo "$output_file" | grep -q "\.lzma$" \ - && [ -x "`which lzma 2> /dev/null`" ] \ - && compr="lzma -9 -f" - echo "$output_file" | grep -q "\.xz$" \ - && [ -x "`which xz 2> /dev/null`" ] \ - && compr="xz --check=crc32 --lzma2=dict=1MiB" - echo "$output_file" | grep -q "\.lzo$" \ - && [ -x "`which lzop 2> /dev/null`" ] \ - && compr="lzop -9 -f" - echo "$output_file" | grep -q "\.lz4$" \ - && [ -x "`which lz4 2> /dev/null`" ] \ - && compr="lz4 -l -9 -f" - echo "$output_file" | grep -q "\.cpio$" && compr="cat" + "-o") # generate cpio image named $1 + output="$1" shift ;; "-u") # map $1 to uid=0 (root) @@ -258,34 +226,21 @@ while [ $# -gt 0 ]; do unknown_option ;; *) # input file/dir - process it - input_file "$arg" "$#" + input_file "$arg" ;; esac ;; esac done -# If output_file is set we will generate cpio archive and compress it +# If output_file is set we will generate cpio archive # we are careful to delete tmp files -if [ -z ${cpio_file} ]; then - timestamp= - if test -n "$KBUILD_BUILD_TIMESTAMP"; then - timestamp="$(date -d"$KBUILD_BUILD_TIMESTAMP" +%s || :)" - if test -n "$timestamp"; then - timestamp="-t $timestamp" - fi +timestamp= +if test -n "$KBUILD_BUILD_TIMESTAMP"; then + timestamp="$(date -d"$KBUILD_BUILD_TIMESTAMP" +%s || :)" + if test -n "$timestamp"; then + timestamp="-t $timestamp" fi - cpio_tfile="$(mktemp ${TMPDIR:-/tmp}/cpiofile.XXXXXX)" - usr/gen_init_cpio $timestamp ${cpio_list} > ${cpio_tfile} -else - cpio_tfile=${cpio_file} -fi -rm ${cpio_list} -if [ "${is_cpio_compressed}" = "compressed" ]; then - cat ${cpio_tfile} > ${output_file} -else - (cat ${cpio_tfile} | ${compr} - > ${output_file}) \ - || (rm -f ${output_file} ; false) fi -[ -z ${cpio_file} ] && rm ${cpio_tfile} -exit 0 +usr/gen_init_cpio $timestamp $cpio_list > $output +rm $cpio_list |