build: Split out mkfs in BuildImageMkfs
Separate out BuildImageMkfs from BuildImage, which just makes the
filesystem without any verity, avb, or other decisions. BuildImage
does all the wrapping for such. This will hopefully ease maintenance
and drop the issues surrounding BuildImage reentrancy. Change
right-size estimation path to use BuildImageMkfs, and do so without
verity or avb wrappings.
Test: build
Bug: 111302946
Change-Id: I30e2e2b727f40ecca5164142f34139f5244f6424
diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index 7611a4d..c5f2801 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -221,8 +221,8 @@
adjusted_blocks))
-def BuildImage(in_dir, prop_dict, out_file, target_out=None):
- """Builds an image for the files under in_dir and writes it to out_file.
+def BuildImageMkfs(in_dir, prop_dict, out_file, target_out, fs_config):
+ """Builds a pure image for the files under in_dir and writes it to out_file.
Args:
in_dir: Path to input directory.
@@ -233,81 +233,15 @@
points to the /system directory under PRODUCT_OUT. fs_config (the one
under system/core/libcutils) reads device specific FS config files from
there.
+ fs_config: The fs_config file that drives the prototype
Raises:
BuildImageError: On build image failures.
"""
- original_mount_point = prop_dict["mount_point"]
- in_dir, fs_config = SetUpInDirAndFsConfig(in_dir, prop_dict)
-
build_command = []
fs_type = prop_dict.get("fs_type", "")
run_e2fsck = False
- fs_spans_partition = True
- if fs_type.startswith("squash"):
- fs_spans_partition = False
-
- # Get a builder for creating an image that's to be verified by Verified Boot,
- # or None if not applicable.
- verity_image_builder = verity_utils.CreateVerityImageBuilder(prop_dict)
-
- if (prop_dict.get("use_dynamic_partition_size") == "true" and
- "partition_size" not in prop_dict):
- # If partition_size is not defined, use output of `du' + reserved_size.
- size = GetDiskUsage(in_dir)
- logger.info(
- "The tree size of %s is %d MB.", in_dir, size // BYTES_IN_MB)
- # If not specified, give us 16MB margin for GetDiskUsage error ...
- size += int(prop_dict.get("partition_reserved_size", BYTES_IN_MB * 16))
- # Round this up to a multiple of 4K so that avbtool works
- size = common.RoundUpTo4K(size)
- if fs_type.startswith("ext"):
- if verity_image_builder:
- size = verity_image_builder.CalculateDynamicPartitionSize(size)
- prop_dict["partition_size"] = str(size)
- if "extfs_inode_count" not in prop_dict:
- prop_dict["extfs_inode_count"] = str(GetInodeUsage(in_dir))
- logger.info(
- "First Pass based on estimates of %d MB and %s inodes.",
- size // BYTES_IN_MB, prop_dict["extfs_inode_count"])
- prop_dict["mount_point"] = original_mount_point
- BuildImage(in_dir, prop_dict, out_file, target_out)
- fs_dict = GetFilesystemCharacteristics(out_file)
- os.remove(out_file)
- block_size = int(fs_dict.get("Block size", "4096"))
- free_size = int(fs_dict.get("Free blocks", "0")) * block_size
- reserved_size = int(prop_dict.get("partition_reserved_size", 0))
- if free_size <= reserved_size:
- logger.info(
- "Not worth reducing image %d <= %d.", free_size, reserved_size)
- else:
- size -= free_size
- size += reserved_size
- if block_size <= 4096:
- size = common.RoundUpTo4K(size)
- else:
- size = ((size + block_size - 1) // block_size) * block_size
- extfs_inode_count = prop_dict["extfs_inode_count"]
- inodes = int(fs_dict.get("Inode count", extfs_inode_count))
- inodes -= int(fs_dict.get("Free inodes", "0"))
- prop_dict["extfs_inode_count"] = str(inodes)
- prop_dict["partition_size"] = str(size)
- logger.info(
- "Allocating %d Inodes for %s.", inodes, out_file)
- if verity_image_builder:
- size = verity_image_builder.CalculateDynamicPartitionSize(size)
- prop_dict["partition_size"] = str(size)
- logger.info(
- "Allocating %d MB for %s.", size // BYTES_IN_MB, out_file)
-
- prop_dict["image_size"] = prop_dict["partition_size"]
-
- # Adjust the image size to make room for the hashes if this is to be verified.
- if verity_image_builder:
- max_image_size = verity_image_builder.CalculateMaxImageSize()
- prop_dict["image_size"] = str(max_image_size)
-
if fs_type.startswith("ext"):
build_command = [prop_dict["ext_mkuserimg"]]
if "extfs_sparse_flag" in prop_dict:
@@ -400,8 +334,8 @@
logger.exception("Failed to compute disk usage with du")
du_str = "unknown"
print(
- "Out of space? The tree size of {} is {}, with reserved space of {} "
- "bytes ({} MB).".format(
+ "Out of space? Out of inodes? The tree size of {} is {}, "
+ "with reserved space of {} bytes ({} MB).".format(
in_dir, du_str,
int(prop_dict.get("partition_reserved_size", 0)),
int(prop_dict.get("partition_reserved_size", 0)) // BYTES_IN_MB))
@@ -414,6 +348,102 @@
int(prop_dict["partition_size"]) // BYTES_IN_MB))
raise
+ if run_e2fsck and prop_dict.get("skip_fsck") != "true":
+ unsparse_image = UnsparseImage(out_file, replace=False)
+
+ # Run e2fsck on the inflated image file
+ e2fsck_command = ["e2fsck", "-f", "-n", unsparse_image]
+ try:
+ common.RunAndCheckOutput(e2fsck_command)
+ finally:
+ os.remove(unsparse_image)
+
+
+def BuildImage(in_dir, prop_dict, out_file, target_out=None):
+ """Builds an image for the files under in_dir and writes it to out_file.
+
+ Args:
+ in_dir: Path to input directory.
+ prop_dict: A property dict that contains info like partition size. Values
+ will be updated with computed values.
+ out_file: The output image file.
+ target_out: Path to the TARGET_OUT directory as in Makefile. It actually
+ points to the /system directory under PRODUCT_OUT. fs_config (the one
+ under system/core/libcutils) reads device specific FS config files from
+ there.
+
+ Raises:
+ BuildImageError: On build image failures.
+ """
+ in_dir, fs_config = SetUpInDirAndFsConfig(in_dir, prop_dict)
+
+ build_command = []
+ fs_type = prop_dict.get("fs_type", "")
+
+ fs_spans_partition = True
+ if fs_type.startswith("squash"):
+ fs_spans_partition = False
+
+ # Get a builder for creating an image that's to be verified by Verified Boot,
+ # or None if not applicable.
+ verity_image_builder = verity_utils.CreateVerityImageBuilder(prop_dict)
+
+ if (prop_dict.get("use_dynamic_partition_size") == "true" and
+ "partition_size" not in prop_dict):
+ # If partition_size is not defined, use output of `du' + reserved_size.
+ size = GetDiskUsage(in_dir)
+ logger.info(
+ "The tree size of %s is %d MB.", in_dir, size // BYTES_IN_MB)
+ # If not specified, give us 16MB margin for GetDiskUsage error ...
+ size += int(prop_dict.get("partition_reserved_size", BYTES_IN_MB * 16))
+ # Round this up to a multiple of 4K so that avbtool works
+ size = common.RoundUpTo4K(size)
+ if fs_type.startswith("ext"):
+ prop_dict["partition_size"] = str(size)
+ prop_dict["image_size"] = str(size)
+ if "extfs_inode_count" not in prop_dict:
+ prop_dict["extfs_inode_count"] = str(GetInodeUsage(in_dir))
+ logger.info(
+ "First Pass based on estimates of %d MB and %s inodes.",
+ size // BYTES_IN_MB, prop_dict["extfs_inode_count"])
+ BuildImageMkfs(in_dir, prop_dict, out_file, target_out, fs_config)
+ fs_dict = GetFilesystemCharacteristics(out_file)
+ os.remove(out_file)
+ block_size = int(fs_dict.get("Block size", "4096"))
+ free_size = int(fs_dict.get("Free blocks", "0")) * block_size
+ reserved_size = int(prop_dict.get("partition_reserved_size", 0))
+ if free_size <= reserved_size:
+ logger.info(
+ "Not worth reducing image %d <= %d.", free_size, reserved_size)
+ else:
+ size -= free_size
+ size += reserved_size
+ if block_size <= 4096:
+ size = common.RoundUpTo4K(size)
+ else:
+ size = ((size + block_size - 1) // block_size) * block_size
+ extfs_inode_count = prop_dict["extfs_inode_count"]
+ inodes = int(fs_dict.get("Inode count", extfs_inode_count))
+ inodes -= int(fs_dict.get("Free inodes", "0"))
+ prop_dict["extfs_inode_count"] = str(inodes)
+ prop_dict["partition_size"] = str(size)
+ logger.info(
+ "Allocating %d Inodes for %s.", inodes, out_file)
+ if verity_image_builder:
+ size = verity_image_builder.CalculateDynamicPartitionSize(size)
+ prop_dict["partition_size"] = str(size)
+ logger.info(
+ "Allocating %d MB for %s.", size // BYTES_IN_MB, out_file)
+
+ prop_dict["image_size"] = prop_dict["partition_size"]
+
+ # Adjust the image size to make room for the hashes if this is to be verified.
+ if verity_image_builder:
+ max_image_size = verity_image_builder.CalculateMaxImageSize()
+ prop_dict["image_size"] = str(max_image_size)
+
+ BuildImageMkfs(in_dir, prop_dict, out_file, target_out, fs_config)
+
# Check if there's enough headroom space available for ext4 image.
if "partition_headroom" in prop_dict and fs_type.startswith("ext4"):
CheckHeadroom(mkfs_output, prop_dict)
@@ -425,16 +455,6 @@
if verity_image_builder:
verity_image_builder.Build(out_file)
- if run_e2fsck and prop_dict.get("skip_fsck") != "true":
- unsparse_image = UnsparseImage(out_file, replace=False)
-
- # Run e2fsck on the inflated image file
- e2fsck_command = ["e2fsck", "-f", "-n", unsparse_image]
- try:
- common.RunAndCheckOutput(e2fsck_command)
- finally:
- os.remove(unsparse_image)
-
def ImagePropFromGlobalDict(glob_dict, mount_point):
"""Build an image property dictionary from the global dictionary.