diff options
Diffstat (limited to 'scripts/gen_initramfs_list.sh')
| -rw-r--r-- | scripts/gen_initramfs_list.sh | 119 |
1 files changed, 78 insertions, 41 deletions
diff --git a/scripts/gen_initramfs_list.sh b/scripts/gen_initramfs_list.sh index 331c079f029..17fa901418a 100644 --- a/scripts/gen_initramfs_list.sh +++ b/scripts/gen_initramfs_list.sh @@ -1,11 +1,11 @@ -#!/bin/bash +#!/bin/sh # Copyright (C) Martin Schlemmer <azarah@nosferatu.za.org> -# Copyright (c) 2006 Sam Ravnborg <sam@ravnborg.org> +# Copyright (C) 2006 Sam Ravnborg <sam@ravnborg.org> # # Released under the terms of the GNU GPL # # Generate a cpio packed initramfs. It uses gen_init_cpio to generate -# the cpio archive, and gzip to pack it. +# the cpio archive, and then compresses it. # The script may also be used to generate the inputfile used for gen_init_cpio # This script assumes that gen_init_cpio is located in usr/ directory @@ -16,16 +16,16 @@ usage() { cat << EOF Usage: $0 [-o <file>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ... - -o <file> Create gzipped initramfs file named <file> using - gen_init_cpio and gzip + -o <file> Create compressed initramfs file named <file> using + gen_init_cpio and compressor depending on the extension -u <uid> User ID to map to user ID 0 (root). - <uid> is only meaningful if <cpio_source> - is a directory. + <uid> is only meaningful if <cpio_source> is a + directory. "squash" forces all files to uid 0. -g <gid> Group ID to map to group ID 0 (root). - <gid> is only meaningful if <cpio_source> - is a directory. + <gid> is only meaningful if <cpio_source> is a + directory. "squash" forces all files to gid 0. <cpio_source> File list or directory for cpio archive. - If <cpio_source> is a .cpio file it will be used + If <cpio_source> is a .cpio file it will be used as direct input to initramfs. -d Output the default cpio list. @@ -36,6 +36,12 @@ to reset the root/group mapping. EOF } +# awk style field access +# $1 - field number; rest is argument string +field() { + shift $1 ; echo $1 +} + list_default_initramfs() { # echo usr/kinit/kinit : @@ -91,7 +97,7 @@ print_mtime() { } list_parse() { - echo "$1 \\" + [ ! -L "$1" ] && echo "$1 \\" || : } # for each file print a line in following format @@ -99,42 +105,37 @@ list_parse() { # for links, devices etc the format differs. See gen_init_cpio for details parse() { local location="$1" - local name="${location/${srcdir}//}" + local name="/${location#${srcdir}}" # change '//' into '/' - name="${name//\/\///}" + name=$(echo "$name" | sed -e 's://*:/:g') local mode="$2" local uid="$3" local gid="$4" local ftype=$(filetype "${location}") # remap uid/gid to 0 if necessary - [ "$uid" -eq "$root_uid" ] && uid=0 - [ "$gid" -eq "$root_gid" ] && gid=0 + [ "$root_uid" = "squash" ] && uid=0 || [ "$uid" -eq "$root_uid" ] && uid=0 + [ "$root_gid" = "squash" ] && gid=0 || [ "$gid" -eq "$root_gid" ] && gid=0 local str="${mode} ${uid} ${gid}" - [ "${ftype}" == "invalid" ] && return 0 - [ "${location}" == "${srcdir}" ] && return 0 + [ "${ftype}" = "invalid" ] && return 0 + [ "${location}" = "${srcdir}" ] && return 0 case "${ftype}" in "file") str="${ftype} ${name} ${location} ${str}" ;; "nod") - local dev_type= - local maj=$(LC_ALL=C ls -l "${location}" | \ - gawk '{sub(/,/, "", $5); print $5}') - local min=$(LC_ALL=C ls -l "${location}" | \ - gawk '{print $6}') - - if [ -b "${location}" ]; then - dev_type="b" - else - dev_type="c" - fi - str="${ftype} ${name} ${str} ${dev_type} ${maj} ${min}" + local dev=`LC_ALL=C ls -l "${location}"` + local maj=`field 5 ${dev}` + local min=`field 6 ${dev}` + maj=${maj%,} + + [ -b "${location}" ] && dev="b" || dev="c" + + str="${ftype} ${name} ${str} ${dev} ${maj} ${min}" ;; "slink") - local target=$(LC_ALL=C ls -l "${location}" | \ - gawk '{print $11}') + local target=`readlink "${location}"` str="${ftype} ${name} ${target} ${str}" ;; *) @@ -158,7 +159,7 @@ unknown_option() { } list_header() { - echo "deps_initramfs := \\" + : } header() { @@ -170,7 +171,7 @@ dir_filelist() { ${dep_list}header "$1" srcdir=$(echo "$1" | sed -e 's://*:/:g') - dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n" 2>/dev/null) + dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n") # If $dirlist is only one line, then the directory is empty if [ "$(echo "${dirlist}" | wc -l)" -gt 1 ]; then @@ -190,9 +191,10 @@ input_file() { source="$1" if [ -f "$1" ]; then ${dep_list}header "$1" - is_cpio="$(echo "$1" | sed 's/^.*\.cpio/cpio/')" - if [ $2 -eq 0 -a ${is_cpio} == "cpio" ]; then + is_cpio="$(echo "$1" | sed 's/^.*\.cpio\(\..*\)\?/cpio/')" + if [ $2 -eq 0 -a ${is_cpio} = "cpio" ]; then cpio_file=$1 + echo "$1" | grep -q '^.*\.cpio\..*' && is_cpio_compressed="compressed" [ ! -z ${dep_list} ] && echo "$1" return 0 fi @@ -200,8 +202,9 @@ input_file() { print_mtime "$1" >> ${output} cat "$1" >> ${output} else + echo "$1 \\" cat "$1" | while read type dir file perm ; do - if [ "$type" == "file" ]; then + if [ "$type" = "file" ]; then echo "$file \\"; fi done @@ -222,18 +225,40 @@ cpio_file= cpio_list= output="/dev/stdout" output_file="" +is_cpio_compressed= +compr="gzip -n -9 -f" arg="$1" case "$arg" in "-l") # files included in initramfs - used by kbuild dep_list="list_" + echo "deps_initramfs := $0 \\" shift ;; - "-o") # generate gzipped cpio image named $1 + "-o") # generate compressed cpio image named $1 shift output_file="$1" cpio_list="$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX)" output=${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" shift ;; esac @@ -270,17 +295,29 @@ while [ $# -gt 0 ]; do esac done -# If output_file is set we will generate cpio archive and gzip it -# we are carefull to delete tmp files +# If output_file is set we will generate cpio archive and compress it +# we are careful to delete tmp files if [ ! -z ${output_file} ]; then 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 $timestamp" + fi + fi cpio_tfile="$(mktemp ${TMPDIR:-/tmp}/cpiofile.XXXXXX)" - usr/gen_init_cpio ${cpio_list} > ${cpio_tfile} + usr/gen_init_cpio $timestamp ${cpio_list} > ${cpio_tfile} else cpio_tfile=${cpio_file} fi rm ${cpio_list} - cat ${cpio_tfile} | gzip -f -9 - > ${output_file} + if [ "${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} fi exit 0 |