Hi Miklos, Here's an updated set of patches for supporting posix ACLs in fuse. I think I've incorporated all the feedback from the last RFC series, and so I've dropped the RFC this time. I also pushed to github the changes I made to libfuse for testing this. They're a little rough and probably not 100% complete, but it is sufficient for exercising the functionality of these patches with fusexmp. https://github.com/sforshee/libfuse/tree/posix-acl Changes since RFC v3: - Add terminating NULL element to fuse_xattr_handlers array. - Remove the FUSE_FS_POSIX_ACL config option and select FS_POSIX_ACL whenever FUSE_FS is enabled. - Use an INIT flag to negotiate ACL support with userspace, only when default_permissions is enabled. - Use a different set of xattr handlers when ACL support is negotiated, preserving the current behavior whenever ACLs are not being enforced by the kernel. - Use a PAGE_SIZE buffer initially in fuse_get_acl() and fall back to querying the xattr size only if that isn't large enough. - Remove code to keep ACLs and file mode in sync in the kernel. FUSE userspace will be responsible for this. Thanks, Seth Seth Forshee (2): fuse: Use generic xattr ops fuse: Add posix ACL support fs/fuse/Kconfig | 1 + fs/fuse/Makefile | 2 +- fs/fuse/acl.c | 100 ++++++++++++++++++++++++ fs/fuse/dir.c | 192 ++++++++-------------------------------------- fs/fuse/fuse_i.h | 23 ++++++ fs/fuse/inode.c | 10 +++ fs/fuse/xattr.c | 192 ++++++++++++++++++++++++++++++++++++++++++++++ include/uapi/linux/fuse.h | 3 + 8 files changed, 364 insertions(+), 159 deletions(-) create mode 100644 fs/fuse/acl.c create mode 100644 fs/fuse/xattr.c -- 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