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author | Masahiro Yamada <masahiroy@kernel.org> | 2020-01-05 00:02:34 +0900 |
---|---|---|
committer | Masahiro Yamada <masahiroy@kernel.org> | 2020-01-16 00:25:21 +0900 |
commit | 9668097599aa5fb87351bc2263e06a1c24718d40 (patch) | |
tree | fa342f24d89c00c5c1d9c80c561f6f2440975d4b /usr/gen_initramfs.sh | |
parent | 3e176683634cfc53dfc04366510d2989804554df (diff) | |
download | linux-stable-9668097599aa5fb87351bc2263e06a1c24718d40.tar.gz linux-stable-9668097599aa5fb87351bc2263e06a1c24718d40.tar.bz2 linux-stable-9668097599aa5fb87351bc2263e06a1c24718d40.zip |
initramfs: generate dependency list and cpio at the same time
Currently, this script is run twice, for the dependency list, and then
for the cpio archive.
The first one is re-run every time although its build log is suppressed
so nobody notices it.
Make it work more efficiently by generating the cpio and the dependency
list at the same time.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'usr/gen_initramfs.sh')
-rwxr-xr-x | usr/gen_initramfs.sh | 108 |
1 files changed, 46 insertions, 62 deletions
diff --git a/usr/gen_initramfs.sh b/usr/gen_initramfs.sh index 68b6ddfd5f96..49a4e22147b5 100755 --- a/usr/gen_initramfs.sh +++ b/usr/gen_initramfs.sh @@ -15,9 +15,10 @@ set -e usage() { cat << EOF Usage: -$0 [-o <file>] [-u <uid>] [-g <gid>] {-d | <cpio_source>} ... +$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 + -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 directory. "squash" forces all files to uid 0. @@ -42,11 +43,6 @@ field() { shift $1 ; echo $1 } -list_default_initramfs() { - # echo usr/kinit/kinit - : -} - default_initramfs() { cat <<-EOF >> ${output} # This is a very simple, default initramfs @@ -81,10 +77,6 @@ filetype() { return 0 } -list_print_mtime() { - : -} - print_mtime() { local my_mtime="0" @@ -97,10 +89,10 @@ print_mtime() { } list_parse() { - if [ -L "$1" ]; then + if [ -z "$dep_list" -o -L "$1" ]; then return fi - echo "$1" | sed 's/:/\\:/g; s/$/ \\/' + echo "$1" | sed 's/:/\\:/g; s/$/ \\/' >> $dep_list } # for each file print a line in following format @@ -161,28 +153,25 @@ unknown_option() { exit 1 } -list_header() { - : -} - header() { printf "\n#####################\n# $1\n" >> ${output} } # process one directory (incl sub-directories) dir_filelist() { - ${dep_list}header "$1" + header "$1" srcdir=$(echo "$1" | sed -e 's://*:/:g') dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n" | LANG=C sort) # If $dirlist is only one line, then the directory is empty if [ "$(echo "${dirlist}" | wc -l)" -gt 1 ]; then - ${dep_list}print_mtime "$1" + print_mtime "$1" echo "${dirlist}" | \ while read x; do - ${dep_list}parse ${x} + list_parse $x + parse $x done fi } @@ -193,22 +182,21 @@ dir_filelist() { input_file() { source="$1" if [ -f "$1" ]; then - ${dep_list}header "$1" + 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" - [ ! -z ${dep_list} ] && echo "$1" + [ -n "$dep_list" ] && echo "$1" >> $dep_list return 0 fi - if [ -z ${dep_list} ]; then - print_mtime "$1" >> ${output} - cat "$1" >> ${output} - else - echo "$1 \\" + print_mtime "$1" >> ${output} + cat "$1" >> ${output} + if [ -n "$dep_list" ]; then + echo "$1 \\" >> $dep_list cat "$1" | while read type dir file perm ; do if [ "$type" = "file" ]; then - echo "$file \\"; + echo "$file \\" >> $dep_list fi done fi @@ -231,44 +219,40 @@ 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 := \\" - shift - ;; - "-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 while [ $# -gt 0 ]; do arg="$1" shift case "$arg" in + "-l") # files included in initramfs - used by kbuild + dep_list="$1" + echo "deps_initramfs := \\" > $dep_list + shift + ;; + "-o") # generate compressed cpio image named $1 + 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 + ;; "-u") # map $1 to uid=0 (root) root_uid="$1" [ "$root_uid" = "-1" ] && root_uid=$(id -u || echo 0) @@ -280,7 +264,7 @@ while [ $# -gt 0 ]; do shift ;; "-d") # display default initramfs list - ${dep_list}default_initramfs + default_initramfs ;; "-h") usage |