aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorMasahiro Yamada <masahiroy@kernel.org>2020-01-05 00:02:34 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2020-01-16 00:25:21 +0900
commit9668097599aa5fb87351bc2263e06a1c24718d40 (patch)
treefa342f24d89c00c5c1d9c80c561f6f2440975d4b
parent3e176683634cfc53dfc04366510d2989804554df (diff)
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>
-rw-r--r--usr/Makefile3
-rwxr-xr-xusr/gen_initramfs.sh108
2 files changed, 47 insertions, 64 deletions
diff --git a/usr/Makefile b/usr/Makefile
index f58101fb4574..9c7387156c6b 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -39,7 +39,7 @@ ifneq ($(wildcard $(obj)/$(datafile_d_y)),)
endif
quiet_cmd_initfs = GEN $@
- cmd_initfs = $(CONFIG_SHELL) $< -o $@ $(ramfs-args) $(ramfs-input)
+ cmd_initfs = $(CONFIG_SHELL) $< -o $@ -l $(obj)/$(datafile_d_y) $(ramfs-args) $(ramfs-input)
targets := $(datafile_y)
@@ -52,7 +52,6 @@ $(deps_initramfs): ;
# 3) If gen_init_cpio are newer than initramfs_data.cpio
# 4) Arguments to gen_initramfs.sh changes
$(obj)/$(datafile_y): $(src)/gen_initramfs.sh $(obj)/gen_init_cpio $(deps_initramfs) FORCE
- $(Q)$< -l $(ramfs-input) > $(obj)/$(datafile_d_y)
$(call if_changed,initfs)
subdir-$(CONFIG_UAPI_HEADER_TEST) += include
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

Privacy Policy