Linus,
Please pull the for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git for-linus
HEAD: 139321c65c0584cd65c4c87a5eb3fdb4fdbd0e19 cifs: Enable building with user namespaces enabled.
This tree is against v3.8-rc1 with the first few bug-fix commits
already merged into v3.8.
This set of changes starts with a few small enhnacements to the user
namespace. reboot support, allowing more arbitrary mappings, and
support for mounting devpts, ramfs, tmpfs, and mqueuefs as just the user
namespace root.
I do my best to document that if you care about limiting your
unprivileged users that when you have the user namespace support enabled
you will need to enable memory control groups.
There is a minor bug fix to prevent overflowing the stack if someone
creates way too many user namespaces.
The bulk of the changes are a continuation of the kuid/kgid push down
work through the filesystems. These changes make using uids and gids
typesafe which ensures that these filesystems are safe to use when
multiple user namespaces are in use. The filesystems converted for 3.9
are ceph, 9p, afs, ocfs2, gfs2, ncpfs, nfs, nfsd, and cifs. The changes
for these filesystems were a little more involved so I split the changes
into smaller hopefully obviously correct changes.
XFS is the only filesystem that remains. I was hoping I could get that
in this release so that user namespace support would be enabled with an
allyesconfig or an allmodconfig but it looks like the xfs changes need
another couple of days before it they are ready.
Eric W. Biederman (91):
userns: Avoid recursion in put_user_ns
userns: Allow any uid or gid mappings that don't overlap.
userns: Recommend use of memory control groups.
userns: Allow the userns root to mount of devpts
userns: Allow the userns root to mount ramfs.
userns: Allow the userns root to mount tmpfs.
ceph: Only allow mounts in the initial network namespace
ceph: Translate between uid and gids in cap messages and kuids and kgids
ceph: Translate inode uid and gid attributes to/from kuids and kgids.
ceph: Convert struct ceph_mds_request to use kuid_t and kgid_t
ceph: Convert kuids and kgids before printing them.
ceph: Enable building when user namespaces are enabled.
9p: Add 'u' and 'g' format specifies for kuids and kgids
9p: Transmit kuid and kgid values
9p: Modify the stat structures to use kuid_t and kgid_t
9p: Modify struct 9p_fid to use a kuid_t not a uid_t
9p: Modify struct v9fs_session_info to use a kuids and kgids
9p: Modify v9fs_get_fsgid_for_create to return a kgid
9p: Allow building 9p with user namespaces enabled.
afs: Remove unused structure afs_store_status
afs: Only allow mounting afs in the intial network namespace
afs: Support interacting with multiple user namespaces
coda: Restrict coda messages to the initial pid namespace
coda: Restrict coda messages to the initial user namespace
coda: Cache permisions in struct coda_inode_info in a kuid_t.
coda: Allow coda to be built when user namespace support is enabled
ocfs2: Handle kuids and kgids in acl/xattr conversions.
ocfs2: convert between kuids and kgids and DLM locks
ocfs2: Convert uid and gids between in core and on disk inodes
ocfs2: For tracing report the uid and gid values in the initial user namespace
ocfs2: Compare kuids and kgids using uid_eq and gid_eq
ocfs2: Enable building with user namespaces enabled
gfs2: Remove improper checks in gfs2_set_dqblk.
gfs2: Split NO_QUOTA_CHANGE inot NO_UID_QUTOA_CHANGE and NO_GID_QUTOA_CHANGE
gfs2: Report quotas in the caller's user namespace.
gfs2: Introduce qd2index
gfs2: Modify struct gfs2_quota_change_host to use struct kqid
gfs2: Modify qdsb_get to take a struct kqid
gfs2: Convert gfs2_quota_refresh to take a kqid
gfs2: Store qd_id in struct gfs2_quota_data as a struct kqid
gfs2: Remove the QUOTA_USER and QUOTA_GROUP defines
gfs2: Use kuid_t and kgid_t types where appropriate.
gfs2: Use uid_eq and gid_eq where appropriate
gfs2: Convert uids and gids between dinodes and vfs inodes.
gfs2: Enable building with user namespaces enabled
ncpfs: Support interacting with multiple user namespaces
nfs_common: Update the translation between nfsv3 acls linux posix acls
sunrpc: Use userns friendly constants.
sunrpc: Use kuid_t and kgid_t where appropriate
sunrpc: Use uid_eq and gid_eq where appropriate
sunrpc: Simplify auth_unix now that everything is a kgid_t
sunrpc: Convert kuids and kgids to uids and gids for printing
sunrpc: Use gid_valid to test for gid != INVALID_GID
sunrpc: Update gss uid to security context mapping.
sunrpc: Update svcgss xdr handle to rpsec_contect cache
sunrpc: Hash uids by first computing their value in the initial userns
sunrpc: Properly encode kuids and kgids in RPC_AUTH_UNIX credentials
sunrpc: Properly encode kuids and kgids in auth.unix.gid rpc pipe upcalls.
sunrpc: Properly decode kuids and kgids in RPC_AUTH_UNIX credentials
nfs: Pass GLOBAL_ROOT_UID and GLOBAL_ROOT_GID to keyring alloc
nfs: Convert struct nfs_fattr to Use kuid_t and kgid_t
nfs: Convert idmap to use kuids and kgids
nfs: Convert nfs2xdr to use kuids and kgids
nfs: Convert nfs3xdr to use kuids and kgids
nfs: Convert nfs4xdr to use kuids and kgids
nfs: kuid and kgid conversions for nfs/inode.c
nfs: Enable building with user namespaces enabled.
nfsd: Remove declaration of nonexistent nfs4_acl_permisison
nfsd: idmap use u32 not uid_t as the intermediate type
nfsd: Convert idmap to use kuids and kgids
nfsd: Remove nfsd_luid, nfsd_lgid, nfsd_ruid and nfsd_rgid
nfsd: Convert nfs3xdr to use kuids and kgids
nfsd: Convert nfsxdr to use kuids and kgids
nfsd: Handle kuids and kgids in the nfs4acl to posix_acl conversion
nfsd: Modify nfsd4_cb_sec to use kuids and kgids
nfsd: Store ex_anon_uid and ex_anon_gid as kuids and kgids
nfsd: Properly compare and initialize kuids and kgids
nfsd: Enable building with user namespaces enabled.
cifs: Override unmappable incoming uids and gids
cifs: Use BUILD_BUG_ON to validate uids and gids are the same size
cifs: Pass GLOBAL_ROOT_UID and GLOBAL_ROOT_GID to keyring_alloc
cifs: Use kuids and kgids SID to uid/gid mapping
cifs: Convert from a kuid before printing current_fsuid
cifs: Modify struct cifs_unix_set_info_args to hold a kuid_t and a kgid_t
cifs: Convert struct tcon_link to use a kuid.
cifs: Convert struct cifs_fattr to use kuid and kgids
cifs: Convert struct cifsFileInfo to use a kuid
cifs: Modify struct smb_vol to use kuids and kgids
cifs: Convert struct cifs_sb_info to use kuids and kgids
cifs: Convert struct cifs_ses to use a kuid_t and a kgid_t
cifs: Enable building with user namespaces enabled.
Gao feng (1):
userns: Allow the unprivileged users to mount mqueue fs
Li Zefan (1):
userns: Allow unprivileged reboot
Documentation/namespaces/resource-control.txt | 14 +++
fs/9p/fid.c | 17 ++--
fs/9p/v9fs.c | 34 +++++--
fs/9p/v9fs.h | 10 +-
fs/9p/vfs_inode.c | 6 +-
fs/9p/vfs_inode_dotl.c | 10 +-
fs/afs/afs.h | 11 +--
fs/afs/fsclient.c | 14 ++-
fs/afs/inode.c | 6 +-
fs/afs/super.c | 6 +
fs/ceph/caps.c | 17 ++--
fs/ceph/inode.c | 23 +++--
fs/ceph/mds_client.c | 4 +-
fs/ceph/mds_client.h | 4 +-
fs/ceph/super.h | 4 +-
fs/cifs/cifs_fs_sb.h | 8 +-
fs/cifs/cifs_spnego.c | 6 +-
fs/cifs/cifsacl.c | 47 ++++++---
fs/cifs/cifsfs.c | 14 ++-
fs/cifs/cifsglob.h | 22 ++--
fs/cifs/cifspdu.h | 1 -
fs/cifs/cifsproto.h | 9 +-
fs/cifs/cifssmb.c | 10 ++-
fs/cifs/connect.c | 66 +++++++++---
fs/cifs/dir.c | 18 ++--
fs/cifs/file.c | 8 +-
fs/cifs/inode.c | 50 ++++++----
fs/cifs/misc.c | 2 +-
fs/coda/cache.c | 4 +-
fs/coda/coda_fs_i.h | 2 +-
fs/coda/coda_linux.c | 8 +-
fs/coda/inode.c | 6 +-
fs/coda/psdev.c | 7 ++
fs/coda/upcall.c | 10 +-
fs/devpts/inode.c | 18 +++
fs/gfs2/acl.c | 2 +-
fs/gfs2/bmap.c | 2 +-
fs/gfs2/dir.c | 2 +-
fs/gfs2/glops.c | 4 +-
fs/gfs2/incore.h | 3 +-
fs/gfs2/inode.c | 32 +++---
fs/gfs2/quota.c | 138 ++++++++++---------------
fs/gfs2/quota.h | 15 ++--
fs/gfs2/super.c | 6 +-
fs/gfs2/sys.c | 14 ++-
fs/gfs2/xattr.c | 4 +-
fs/ncpfs/inode.c | 55 ++++++----
fs/ncpfs/ioctl.c | 25 +++--
fs/ncpfs/ncp_fs_sb.h | 6 +-
fs/nfs/idmap.c | 53 +++++++---
fs/nfs/inode.c | 12 +-
fs/nfs/nfs2xdr.c | 19 +++-
fs/nfs/nfs3xdr.c | 18 +++-
fs/nfs/nfs4xdr.c | 16 ++--
fs/nfs_common/nfsacl.c | 41 +++++---
fs/nfsd/acl.h | 2 -
fs/nfsd/auth.c | 12 +-
fs/nfsd/auth.h | 6 -
fs/nfsd/export.c | 22 +++--
fs/nfsd/idmap.h | 8 +-
fs/nfsd/nfs3xdr.c | 14 ++-
fs/nfsd/nfs4acl.c | 63 ++++++++---
fs/nfsd/nfs4idmap.c | 38 +++++--
fs/nfsd/nfs4recover.c | 4 +-
fs/nfsd/nfs4state.c | 6 +-
fs/nfsd/nfs4xdr.c | 54 ++++++----
fs/nfsd/nfsxdr.c | 14 ++-
fs/nfsd/state.h | 4 +-
fs/nfsd/vfs.c | 8 +-
fs/ocfs2/acl.c | 31 +++++-
fs/ocfs2/dlmglue.c | 8 +-
fs/ocfs2/file.c | 11 +-
fs/ocfs2/inode.c | 12 +-
fs/ocfs2/namei.c | 4 +-
fs/ocfs2/refcounttree.c | 2 +-
fs/ramfs/inode.c | 1 +
include/linux/coda_psdev.h | 2 +-
include/linux/nfs4.h | 6 +-
include/linux/nfs_idmap.h | 9 +-
include/linux/nfs_xdr.h | 4 +-
include/linux/nfsd/export.h | 4 +-
include/linux/sunrpc/auth.h | 7 +-
include/linux/sunrpc/svcauth.h | 4 +-
include/linux/user_namespace.h | 10 +-
include/net/9p/9p.h | 14 ++--
include/net/9p/client.h | 12 +-
init/Kconfig | 20 ++---
ipc/mqueue.c | 1 +
kernel/sys.c | 5 +-
kernel/user.c | 4 +-
kernel/user_namespace.c | 62 +++++++++---
mm/shmem.c | 2 +
net/9p/client.c | 43 +++++---
net/9p/protocol.c | 49 ++++++++-
net/ceph/ceph_common.c | 5 +
net/sunrpc/auth.c | 6 +-
net/sunrpc/auth_generic.c | 16 ++--
net/sunrpc/auth_gss/auth_gss.c | 45 +++++---
net/sunrpc/auth_gss/svcauth_gss.c | 18 +++-
net/sunrpc/auth_unix.c | 36 +++----
net/sunrpc/svcauth_unix.c | 43 +++++---
101 files changed, 1058 insertions(+), 656 deletions(-)
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