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kbuild: create deterministic initramfs directory listings 

kbuild runs "find" on each entry in CONFIG_INITRAMFS_SOURCE that is a
directory. The order of the file listing output by "find" matter for
build reproducability, hence this patch applies "sort" to get
deterministic results.

Without this patch, two different machines with identical initramfs
directory input may produce differing initramfs cpio archives (different
hash) due to the different order of the files within the archive.

Signed-off-by: Bjørn Forsman <bjorn.forsman@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Bjørn Forsman 2017-06-24 16:48:10 +02:00 committed by Masahiro Yamada
parent adcc3f7cee
commit 9e6e0d5f2a
1 changed files with 1 additions and 1 deletions
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2
scripts/gen_initramfs_list.sh
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@ -174,7 +174,7 @@ dir_filelist() {
${dep_list}header "$1"
srcdir=$(echo "$1" | sed -e 's://*:/:g')
dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n")
dirlist=$(find "${srcdir}" -printf "%p %m %U %G\n" | sort)
# If $dirlist is only one line, then the directory is empty
if [ "$(echo "${dirlist}" | wc -l)" -gt 1 ]; then