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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-10-07 11:20:55 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-10-07 12:22:05 +0200
commita68eb730558fb90bc8d9524564d8f9e58f3ccac1 (patch)
treede7a678b28786ec2e47e4956d8cdb0f4466f3d5c /include/sqfs/dir_reader.h
parentc7fdb2b305ed8b4deb67bfc6ef3257e7e6773397 (diff)
Improve ABI backward & forward compatibillity
- Padd the compressor config union - 128 bytes aught to be enough for everyone, i.e. future compressors. - Insist that the padding space is initialized to 0. If a field gets added to an existing compressor, it can test for 0 as a sentinel value. - Add a size field to the hook structure, aka "the Microsoft way". - The explanation is in the comment. - Don't make the Microsoft mistake of checking for >=, insist on *exact* size match. Future users will need a fallback if their hooks are rejected. But at least they will be rejected instead of silently not being used. - Add an unsupported flag check to the dir tree reader. - Add a basic abi unit test that, for now, checks the size of the compressor config struct fields. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'include/sqfs/dir_reader.h')
-rw-r--r--include/sqfs/dir_reader.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/sqfs/dir_reader.h b/include/sqfs/dir_reader.h
index 8377fdd..ec84d98 100644
--- a/include/sqfs/dir_reader.h
+++ b/include/sqfs/dir_reader.h
@@ -99,6 +99,8 @@ typedef enum {
* of parent nodes with the subtree stored at the end.
*/
SQFS_TREE_STORE_PARENTS = 0x40,
+
+ SQFS_TREE_ALL_FLAGS = 0x7F,
} E_SQFS_TREE_FILTER_FLAGS;
/**