[PATCH v8 00/41] Richacls
From: Andreas Gruenbacher
Date: Sun Sep 27 2015 - 18:09:57 EST
Hello,
here's another update of the richacl patch queue. At this stage, I would
like to ask for final feedback so that the core and ext4 code (patches
1-19) can be merged in the 4.4 merge window. The nfsd and nfs code should
then go through the respective maintainer trees.
Changes since the last posting (https://lwn.net/Articles/656704/):
* The MAY_DELETE_SELF permission now also overrides the sticky
directory checks.
* Fix the permission check algorithm to apply the owner mask instead
of the group mask to user entries matching the current owner. That way,
the owner will retain the permissions in those entries when creating
objects with create mode 0700 and similar. (A chmod to mode 0700 already
creates an owner@:rwpx::allow ace, which was hiding this bug.)
* Fix richacl_apply_masks to properly insert deny aces when raising the
permissions of the other class. The bug could be triggered by
chmod'ing a group@:r::allow acl to mode 0077, for example.
* Various cleanups and improvements to comments.
The complete patch queue is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/agruen/linux-richacl.git \
richacl-2015-09-28
The richacl user-space utilitites and test suite are available here:
https://github.com/andreas-gruenbacher/richacl/
Open issues in 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.
* 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.
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 | 111 ++-
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 | 482 +++++++------
fs/nfsd/nfs4proc.c | 25 +-
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 | 682 ++++++++++++++++++
fs/richacl_compat.c | 915 ++++++++++++++++++++++++
fs/richacl_inode.c | 297 ++++++++
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, 4659 insertions(+), 732 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
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 | 111 ++-
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 | 482 +++++++------
fs/nfsd/nfs4proc.c | 25 +-
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 | 682 ++++++++++++++++++
fs/richacl_compat.c | 915 ++++++++++++++++++++++++
fs/richacl_inode.c | 297 ++++++++
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, 4659 insertions(+), 732 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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