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releasetools: Fix the detection of using squashfs. 

We should disable using imgdiff if *any* of the source and target
partitions uses squashfs.

Bug: 30004734
Test: Create an incremental with two builds with one of them uses squashfs.
Change-Id: I826cd13d7b852c548e4b45e61f5ae00f6407cac3
This commit is contained in:
Tao Bao 2016-07-07 09:09:58 -07:00
parent 14c2a1586b
commit f8acad1480
1 changed files with 7 additions and 5 deletions
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12
tools/releasetools/ota_from_target_files.py
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@ -873,15 +873,17 @@ def WriteBlockIncrementalOTAPackage(target_zip, source_zip, output_zip):
int(i) for i in
OPTIONS.info_dict.get("blockimgdiff_versions", "1").split(","))
# Check first block of system partition for remount R/W only if
# disk type is ext4
system_partition = OPTIONS.source_info_dict["fstab"]["/system"]
check_first_block = system_partition.fs_type == "ext4"
# Check the first block of the source system partition for remount R/W only
# if the filesystem is ext4.
system_src_partition = OPTIONS.source_info_dict["fstab"]["/system"]
check_first_block = system_src_partition.fs_type == "ext4"
# Disable using imgdiff for squashfs. 'imgdiff -z' expects input files to be
# in zip formats. However with squashfs, a) all files are compressed in LZ4;
# b) the blocks listed in block map may not contain all the bytes for a given
# file (because they're rounded to be 4K-aligned).
disable_imgdiff = system_partition.fs_type == "squashfs"
system_tgt_partition = OPTIONS.target_info_dict["fstab"]["/system"]
disable_imgdiff = (system_src_partition.fs_type == "squashfs" or
system_tgt_partition.fs_type == "squashfs")
system_diff = common.BlockDifference("system", system_tgt, system_src,
check_first_block,
version=blockimgdiff_version,