Hi, folks, These patches add ACL support for UBIFS. UBIFS ACL is based on xattr, which simplifies the implementation without considering budget and sync. New kernel/mount options, CONFIG_UBIFS_FS_POSIX_ACL and `-o acl', are introduced to enable or disable UBIFS ACL. `acl.c' provides format conversion between in-memory ACL and on-flash ACL. Each time a new inode is created, the correspondng ACL xattr is built (except for the inode of an xattr dent). Testcases (adjusted to mount an UBI volume) in LTP [1] are passed. Any comment is appreciated. More test is appreciated. V3: * Use POSIX generic ACL structures and functions to do the conversions between in-memory and on-flash ACL. Thanks Dongsheng Yang for pointing this out. * Remove ACL if size is 0 when setting ACL. * Clear cached ACL when ACL xattr is removed. V2: * Do not set ACL-xattr-handler, and call generic ACL handler in xattr functions. http://lists.infradead.org/pipermail/linux-mtd/2015-September/061672.html V1: http://lists.infradead.org/pipermail/linux-mtd/2015-March/058452.html [1] https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/fs/acl/tacl_xattr.sh thanks, Sheng Sheng Yong (5): UBIFS: ACL: introduce init/set/get functions for ACL UBIFS: ACL: set ACL interfaces in inode_operations UBIFS: ACL: handle ACL through xattr UBIFS: ACL: introduce ACL mount options UBIFS: ACL: add ACL config option fs/ubifs/Kconfig | 11 +++ fs/ubifs/Makefile | 1 + fs/ubifs/acl.c | 141 +++++++++++++++++++++++++++++++ fs/ubifs/dir.c | 20 +++++ fs/ubifs/file.c | 14 ++++ fs/ubifs/super.c | 15 ++++ fs/ubifs/ubifs.h | 14 ++++ fs/ubifs/xattr.c | 243 ++++++++++++++++++++++++++++++++++-------------------- 8 files changed, 369 insertions(+), 90 deletions(-) create mode 100644 fs/ubifs/acl.c -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
