[RFC v7 00/41] Richacls
From: Andreas Gruenbacher
Date: Sat Sep 05 2015 - 06:28:52 EST
Hello,
here's another update of the richacl patch queue. Changes since the last
posting (https://lwn.net/Articles/653459/):
* The owner argument of richacl_compute_max_masks() has been
removed; the maximum file masks are computed independent of
the current file owner; with the previous version, the group mask
could have ended up being too restrictive after an owner change.
* Function richace_clear_inheritance_flags() has been replaced
by the RICHACE_INHERITANCE_FLAGS define.
* Definitions common to the kernel and to user space have been
moved into uapi header files.
* A few other minor fixes and clarifications.
In addition, the user-space utilitites now include a man page describing how
richacls work:
https://github.com/andreas-gruenbacher/richacl/blob/master/man/richacl.7
The complete patch queue is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/agruen/linux-richacl.git \
richacl-2015-09-xx
Open issues:
* nfs: When a user or group name cannot be mapped, nfs's idmapper
always maps it to nobody. That's good enough for mapping the file
owner and owning group, but not for identifiers in acls. For now, to get
the nfs richacl support somewhat working, I'm explicitly checking if
mapping has resulted in uid/gid 99 in the kernel.
* nfs: When the nfs server replies with NFS4ERR_BADNAME for any
user or group name lookup, the client will stop sending numeric uids
and gids to the server even when the lookup wasn't numeric.
From then on, the client will translate uids and gids that have no
mapping to the string "nobody", and the server will reject them.
This problem is not specific to acls.
* nfsd could implement creating a file without applying a file mode;
this would make Automatic Inheritance work as intended. Right
now, when no mode is specified, the file permission bits are set
to 0.
* It would be nice if the MAY_DELETE_SELF flag could override the
sticky directory check as it did in the previous version of this patch
queue. I couldn't come up with a clean way of achieving that.
Thanks,
Andreas
Andreas Gruenbacher (39):
vfs: Add IS_ACL() and IS_RICHACL() tests
vfs: Add MAY_CREATE_FILE and MAY_CREATE_DIR permission flags
vfs: Add MAY_DELETE_SELF and MAY_DELETE_CHILD permission flags
vfs: Make the inode passed to inode_change_ok non-const
vfs: Add permission flags for setting file attributes
richacl: In-memory representation and helper functions
richacl: Permission mapping functions
richacl: Compute maximum file masks from an acl
richacl: Update the file masks in chmod()
richacl: Permission check algorithm
vfs: Cache base_acl objects in inodes
vfs: Cache richacl in struct inode
richacl: Check if an acl is equivalent to a file mode
richacl: Create-time inheritance
richacl: Automatic Inheritance
richacl: xattr mapping functions
vfs: Add richacl permission checking
richacl: acl editing helper functions
richacl: Move everyone@ aces down the acl
richacl: Propagate everyone@ permissions to other aces
richacl: Set the owner permissions to the owner mask
richacl: Set the other permissions to the other mask
richacl: Isolate the owner and group classes
richacl: Apply the file masks to a richacl
richacl: Create richacl from mode values
nfsd: Keep list of acls to dispose of in compoundargs
nfsd: Use richacls as internal acl representation
nfsd: Add richacl support
nfsd: Add support for the v4.1 dacl attribute
nfsd: Add support for the MAY_CREATE_{FILE,DIR} permissions
richacl: Add support for unmapped identifiers
ext4: Don't allow unmapped identifiers in richacls
sunrpc: Allow to demand-allocate pages to encode into
sunrpc: Add xdr_init_encode_pages
nfs: Fix GETATTR bitmap verification
nfs: Remove unused xdr page offsets in getacl/setacl arguments
nfs: Add richacl support
nfs: Add support for the v4.1 dacl attribute
richacl: uapi header split
Aneesh Kumar K.V (2):
ext4: Add richacl support
ext4: Add richacl feature flag
drivers/staging/lustre/lustre/llite/llite_lib.c | 2 +-
fs/Kconfig | 9 +
fs/Makefile | 3 +
fs/attr.c | 81 ++-
fs/ext4/Kconfig | 15 +
fs/ext4/Makefile | 1 +
fs/ext4/acl.c | 6 +-
fs/ext4/acl.h | 12 +-
fs/ext4/ext4.h | 6 +-
fs/ext4/file.c | 6 +-
fs/ext4/ialloc.c | 7 +-
fs/ext4/inode.c | 10 +-
fs/ext4/namei.c | 11 +-
fs/ext4/richacl.c | 218 ++++++
fs/ext4/richacl.h | 47 ++
fs/ext4/super.c | 42 +-
fs/ext4/xattr.c | 6 +
fs/ext4/xattr.h | 1 +
fs/f2fs/acl.c | 4 +-
fs/inode.c | 15 +-
fs/jffs2/acl.c | 6 +-
fs/namei.c | 109 ++-
fs/nfs/inode.c | 3 -
fs/nfs/nfs4proc.c | 701 +++++++++++++-----
fs/nfs/nfs4xdr.c | 257 ++++++-
fs/nfs/super.c | 4 +-
fs/nfs_common/Makefile | 1 +
fs/nfs_common/nfs4acl.c | 44 ++
fs/nfsd/Kconfig | 1 +
fs/nfsd/acl.h | 23 +-
fs/nfsd/nfs4acl.c | 481 ++++++------
fs/nfsd/nfs4proc.c | 24 +-
fs/nfsd/nfs4xdr.c | 268 ++++---
fs/nfsd/nfsd.h | 6 +-
fs/nfsd/nfsfh.c | 8 +-
fs/nfsd/vfs.c | 28 +-
fs/nfsd/vfs.h | 17 +-
fs/nfsd/xdr4.h | 12 +-
fs/posix_acl.c | 26 +-
fs/richacl_base.c | 683 +++++++++++++++++
fs/richacl_compat.c | 928 ++++++++++++++++++++++++
fs/richacl_inode.c | 296 ++++++++
fs/richacl_xattr.c | 267 +++++++
fs/xattr.c | 34 +-
include/linux/fs.h | 50 +-
include/linux/nfs4.h | 24 +-
include/linux/nfs4acl.h | 7 +
include/linux/nfs_fs.h | 1 -
include/linux/nfs_fs_sb.h | 2 +
include/linux/nfs_xdr.h | 13 +-
include/linux/posix_acl.h | 12 +-
include/linux/richacl.h | 275 +++++++
include/linux/richacl_compat.h | 40 +
include/linux/richacl_xattr.h | 47 ++
include/linux/sunrpc/xdr.h | 2 +
include/uapi/linux/Kbuild | 2 +
include/uapi/linux/fs.h | 3 +-
include/uapi/linux/nfs4.h | 3 +-
include/uapi/linux/richacl.h | 111 +++
include/uapi/linux/richacl_xattr.h | 43 ++
include/uapi/linux/xattr.h | 2 +
net/sunrpc/xdr.c | 34 +
62 files changed, 4672 insertions(+), 728 deletions(-)
create mode 100644 fs/ext4/richacl.c
create mode 100644 fs/ext4/richacl.h
create mode 100644 fs/nfs_common/nfs4acl.c
create mode 100644 fs/richacl_base.c
create mode 100644 fs/richacl_compat.c
create mode 100644 fs/richacl_inode.c
create mode 100644 fs/richacl_xattr.c
create mode 100644 include/linux/nfs4acl.h
create mode 100644 include/linux/richacl.h
create mode 100644 include/linux/richacl_compat.h
create mode 100644 include/linux/richacl_xattr.h
create mode 100644 include/uapi/linux/richacl.h
create mode 100644 include/uapi/linux/richacl_xattr.h
--
2.4.3
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