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| author | P J P <ppandit@redhat.com> | 2013-11-13 00:10:22 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-13 04:09:26 +0100 |
| commit | 9ba4bcb645898d562498ea66a0df958ef0e7a68c (patch) | |
| tree | 20befe80438adaec351eff0eb1f225d0b3df0963 /scripts/gen_initramfs_list.sh | |
| parent | init: make init failures more explicit (diff) | |
| download | linux-9ba4bcb645898d562498ea66a0df958ef0e7a68c.tar.xz linux-9ba4bcb645898d562498ea66a0df958ef0e7a68c.zip | |
initramfs: read CONFIG_RD_ variables for initramfs compression
When expert configuration option(CONFIG_EXPERT) is enabled, menuconfig
offers a choice of compression algorithm to compress initial ramfs image;
This choice is stored into CONFIG_RD_* variables. But usr/Makefile uses
earlier INITRAMFS_COMPRESSION_* macros to build initial ramfs file. Since
none of them is defined, resulting 'initramfs_data.cpio' file remains
un-compressed.
This patch updates the Makefile to use CONFIG_RD_* variables and adds
support for LZ4 compression algorithm. Also updates the
'gen_initramfs_list.sh' script to check whether a selected compression
command is accessible or not. And fall-back to default gzip(1)
compression when it is not.
Signed-off-by: P J P <prasad@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/gen_initramfs_list.sh')
| -rw-r--r-- | scripts/gen_initramfs_list.sh | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/scripts/gen_initramfs_list.sh b/scripts/gen_initramfs_list.sh index b482f162a18a..ef474098d9f1 100644 --- a/scripts/gen_initramfs_list.sh +++ b/scripts/gen_initramfs_list.sh @@ -240,12 +240,24 @@ case "$arg" in output_file="$1" cpio_list="$(mktemp ${TMPDIR:-/tmp}/cpiolist.XXXXXX)" output=${cpio_list} - echo "$output_file" | grep -q "\.gz$" && compr="gzip -n -9 -f" - echo "$output_file" | grep -q "\.bz2$" && compr="bzip2 -9 -f" - echo "$output_file" | grep -q "\.lzma$" && compr="lzma -9 -f" - echo "$output_file" | grep -q "\.xz$" && \ - compr="xz --check=crc32 --lzma2=dict=1MiB" - echo "$output_file" | grep -q "\.lzo$" && compr="lzop -9 -f" + 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 -9 -f" echo "$output_file" | grep -q "\.cpio$" && compr="cat" shift ;; |