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[archiso] Avoid integer overflow when .fs is > 10.2G

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Gerardo Exequiel Pozzi 2013-01-08 20:20:03 -03:00
parent 579ea0f3c1
commit 00d1126f70
1 changed files with 6 additions and 1 deletions
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7
archiso/initcpio/hooks/archiso
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@ -11,7 +11,12 @@ _mnt_fs() {
ro_dev=$(losetup --find --show --read-only "${img}") ro_dev=$(losetup --find --show --read-only "${img}")
echo ${ro_dev} >> /run/archiso/used_block_devices echo ${ro_dev} >> /run/archiso/used_block_devices
ro_dev_size=$(blockdev --getsz ${ro_dev}) ro_dev_size=$(blockdev --getsz ${ro_dev})
rw_dev_size=$((ro_dev_size*cowfile_size/100)) if [[ "${cowfile_size}" == "100" ]]; then
rw_dev_size=${ro_dev_size}
else
# size calculation done in this way to avoid integer overflow when ro_dev_size is > 10.2G
rw_dev_size=$((ro_dev_size/100*cowfile_size))
fi
if [[ "${cow_persistent}" == "P" ]]; then if [[ "${cow_persistent}" == "P" ]]; then
if [[ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]]; then if [[ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]]; then