Miklos, With these patches, copy up preserves the vfs aware subset of fileattr flags, so xfstest overlay/075 passes. I've tested also some generic chattr xfstests and written a new test to verify the logic of overlay.xflags xattr [2]. Changes since v1 [1]: - Store (i),(a) flags in xattr text format - Copy up (A),(S) flags to upper fileattr - Fixes the problems with setting ovl dirs and hardlinks immutable [1] https://lore.kernel.org/linux-unionfs/CAJfpeguMQca-+vTdzoDdDWNJraWyqMa3vYRFDWPMk_R6-L7Obw@xxxxxxxxxxxxxx/ [2] https://github.com/amir73il/xfstests/commits/ovl-xflags Amir Goldstein (3): ovl: pass ovl_fs to ovl_check_setxattr() ovl: copy up sync/noatime fileattr flags ovl: consistent behavior for immutable/append-only inodes fs/overlayfs/copy_up.c | 72 +++++++++++++--- fs/overlayfs/dir.c | 6 +- fs/overlayfs/inode.c | 58 ++++++++++--- fs/overlayfs/namei.c | 2 +- fs/overlayfs/overlayfs.h | 44 +++++++++- fs/overlayfs/util.c | 178 ++++++++++++++++++++++++++++++++++++++- 6 files changed, 323 insertions(+), 37 deletions(-) -- 2.32.0
