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package/mke2img: add option to specify block size

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ext filesystems can use a block size of 1024, 2048, or 4096 bytes, the
former being interesting to store small files, while the latter being
more intersting to store bigger files.

So far, we were using the default, which was to use a 1024-byte block.
Continue doing so (for now...).

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN 2017-07-04 00:51:01 +02:00 committed by Thomas Petazzoni
parent ddecc7dcb2
commit 221808810d
2 changed files with 9 additions and 2 deletions
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1
fs/ext2/ext2.mk
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@ -12,6 +12,7 @@ EXT2_LABEL := $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL))
EXT2_OPTS = \
-G $(BR2_TARGET_ROOTFS_EXT2_GEN) \
-R $(BR2_TARGET_ROOTFS_EXT2_REV) \
-B 1024 \
-b $(BR2_TARGET_ROOTFS_EXT2_BLOCKS) \
-i $(BR2_TARGET_ROOTFS_EXT2_INODES) \
-I $(BR2_TARGET_ROOTFS_EXT2_EXTRA_INODES) \

10
package/mke2img/mke2img
View File

@ -19,9 +19,10 @@ main() {
rev=1
nb_extra_inodes=0
while getopts :hb:i:I:r:d:o:G:R:l:u: OPT; do
while getopts :hB:b:i:I:r:d:o:G:R:l:u: OPT; do
case "${OPT}" in
h) help; exit 0;;
B) block_size="${OPTARG}";;
b) nb_blocks=${OPTARG};;
i) nb_inodes=${OPTARG};;
I) nb_extra_inodes=${OPTARG};;
@ -47,6 +48,11 @@ main() {
if [ -z "${nb_blocks}" ]; then
error "you must specify the size of the output image with '-b'\n"
fi
case "${block_size}" in
1024|2048|4096) ;; # Sole valid values
'') error "you must specify the size of a block with -B\n";;
*) error "invalid block size '%s' (valid: 1024. 2048, 4096)\n" "${block_size}";;
esac
case "${gen}:${rev}" in
2:0|2:1|3:1|4:1)
;;
@ -91,7 +97,7 @@ main() {
fi
# Generate the filesystem
genext2fs_opts=( -z -b ${nb_blocks} -N ${nb_inodes} -d "${root_dir}" )
genext2fs_opts=( -z -B ${block_size} -b ${nb_blocks} -N ${nb_inodes} -d "${root_dir}" )
if [ -n "${nb_res_blocks}" ]; then
genext2fs_opts+=( -m ${nb_res_blocks} )
fi