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    Subject[GIT] New Credentials API (preliminary patches for 2.6.27) [updated]
    On Sat, 26 Jul 2008, James Morris wrote:

    > A new credentials framework has been developed by David Howells. The code
    > has been through several iterations of posting and review, and is
    > considered by various folk to be ready to merge into linux-next.

    These patches have been updated by David to resolve conflicts in current
    git, re-tested, and may be pulled cleanly per below.

    Also note the original intro email included at the end of this email.

    Please pull.

    The following changes since commit 63add2f2072e69c1eb7a5f6ca8f415122da889b9:
    Linus Torvalds (1):
    Merge branch 'cpus4096-v2' of git://git.kernel.org/.../tip/linux-2.6-tip

    are available in the git repository at:

    git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6.git for-linus

    David Howells (7):
    Fix setting of PF_SUPERPRIV by __capable() [ver #3]
    KEYS: Disperse linux/key_ui.h [ver #3]
    KEYS: Alter use of key instantiation link-to-keyring argument [ver #3]
    CRED: Neuter sys_capset() [ver #3]
    CRED: Constify the kernel_cap_t arguments to the capset LSM hooks [ver #3]
    CRED: Change current->fs[ug]id to current_fs[ug]id() [ver #3]
    CRED: Wrap most current->e?[ug]id and some task->e?[ug]id [ver #3]

    arch/ia64/kernel/mca_drv.c | 2 +-
    arch/ia64/kernel/perfmon.c | 23 ++--
    arch/ia64/kernel/signal.c | 4 +-
    arch/mips/kernel/mips-mt-fpaff.c | 5 +-
    arch/parisc/kernel/signal.c | 2 +-
    arch/powerpc/mm/fault.c | 2 +-
    arch/powerpc/platforms/cell/spufs/inode.c | 4 +-
    arch/s390/hypfs/inode.c | 4 +-
    arch/x86/mm/fault.c | 2 +-
    drivers/block/loop.c | 6 +-
    drivers/char/tty_audit.c | 6 +-
    drivers/gpu/drm/drm_fops.c | 2 +-
    drivers/isdn/capi/capifs.c | 4 +-
    drivers/media/video/cpia.c | 2 +-
    drivers/net/tun.c | 4 +-
    drivers/net/wan/sbni.c | 9 +-
    drivers/usb/core/devio.c | 8 +-
    drivers/usb/core/inode.c | 4 +-
    fs/9p/fid.c | 2 +-
    fs/9p/vfs_inode.c | 4 +-
    fs/9p/vfs_super.c | 4 +-
    fs/affs/inode.c | 4 +-
    fs/affs/super.c | 4 +-
    fs/anon_inodes.c | 4 +-
    fs/attr.c | 4 +-
    fs/autofs/inode.c | 4 +-
    fs/autofs4/inode.c | 4 +-
    fs/autofs4/waitq.c | 4 +-
    fs/bfs/dir.c | 4 +-
    fs/binfmt_elf_fdpic.c | 8 +-
    fs/cifs/cifs_fs_sb.h | 2 +-
    fs/cifs/cifsproto.h | 2 +-
    fs/cifs/connect.c | 4 +-
    fs/cifs/dir.c | 12 +-
    fs/cifs/inode.c | 8 +-
    fs/cifs/ioctl.c | 2 +-
    fs/cifs/misc.c | 4 +-
    fs/coda/cache.c | 6 +-
    fs/coda/upcall.c | 2 +-
    fs/devpts/inode.c | 4 +-
    fs/dquot.c | 4 +-
    fs/ecryptfs/messaging.c | 18 ++-
    fs/ecryptfs/miscdev.c | 20 ++-
    fs/exec.c | 18 +-
    fs/ext2/balloc.c | 2 +-
    fs/ext2/ialloc.c | 4 +-
    fs/ext3/balloc.c | 2 +-
    fs/ext3/ialloc.c | 4 +-
    fs/ext4/balloc.c | 3 +-
    fs/ext4/ialloc.c | 4 +-
    fs/fat/file.c | 2 +-
    fs/fat/inode.c | 4 +-
    fs/fcntl.c | 2 +-
    fs/fuse/dev.c | 4 +-
    fs/gfs2/inode.c | 10 +-
    fs/hfs/inode.c | 4 +-
    fs/hfs/super.c | 4 +-
    fs/hfsplus/inode.c | 4 +-
    fs/hfsplus/options.c | 4 +-
    fs/hpfs/namei.c | 24 ++--
    fs/hpfs/super.c | 4 +-
    fs/hugetlbfs/inode.c | 16 +-
    fs/inotify_user.c | 2 +-
    fs/ioprio.c | 4 +-
    fs/jffs2/fs.c | 4 +-
    fs/jfs/jfs_inode.c | 4 +-
    fs/locks.c | 2 +-
    fs/minix/bitmap.c | 4 +-
    fs/namei.c | 10 +-
    fs/namespace.c | 2 +-
    fs/ncpfs/ioctl.c | 91 ++++++------
    fs/nfsd/vfs.c | 6 +-
    fs/ocfs2/dlm/dlmfs.c | 8 +-
    fs/ocfs2/namei.c | 4 +-
    fs/omfs/inode.c | 8 +-
    fs/open.c | 12 +--
    fs/pipe.c | 4 +-
    fs/posix_acl.c | 4 +-
    fs/quota.c | 4 +-
    fs/ramfs/inode.c | 4 +-
    fs/reiserfs/namei.c | 4 +-
    fs/smbfs/dir.c | 4 +-
    fs/smbfs/inode.c | 2 +-
    fs/smbfs/proc.c | 2 +-
    fs/sysv/ialloc.c | 4 +-
    fs/ubifs/budget.c | 2 +-
    fs/ubifs/dir.c | 4 +-
    fs/udf/ialloc.c | 4 +-
    fs/udf/namei.c | 2 +-
    fs/ufs/ialloc.c | 4 +-
    fs/xfs/linux-2.6/xfs_cred.h | 2 +-
    fs/xfs/linux-2.6/xfs_linux.h | 4 +-
    fs/xfs/xfs_acl.c | 6 +-
    fs/xfs/xfs_attr.c | 2 +-
    fs/xfs/xfs_inode.c | 4 +-
    fs/xfs/xfs_vnodeops.c | 8 +-
    include/keys/keyring-type.h | 31 ++++
    include/linux/capability.h | 15 ++-
    include/linux/cred.h | 50 ++++++
    include/linux/fs.h | 2 +-
    include/linux/key-ui.h | 66 --------
    include/linux/key.h | 18 +-
    include/linux/keyctl.h | 4 +-
    include/linux/sched.h | 1 +
    include/linux/security.h | 107 +++++++-------
    include/net/scm.h | 4 +-
    ipc/mqueue.c | 6 +-
    ipc/shm.c | 5 +-
    ipc/util.c | 18 ++-
    kernel/acct.c | 7 +-
    kernel/auditsc.c | 6 +-
    kernel/capability.c | 236 ++++-------------------------
    kernel/cgroup.c | 9 +-
    kernel/futex.c | 8 +-
    kernel/futex_compat.c | 3 +-
    kernel/kmod.c | 2 +-
    kernel/ptrace.c | 20 ++-
    kernel/sched.c | 11 +-
    kernel/signal.c | 15 +-
    kernel/sys.c | 16 +-
    kernel/sysctl.c | 2 +-
    kernel/timer.c | 8 +-
    kernel/user_namespace.c | 2 +-
    mm/mempolicy.c | 7 +-
    mm/migrate.c | 7 +-
    mm/oom_kill.c | 6 +-
    mm/shmem.c | 8 +-
    net/9p/client.c | 2 +-
    net/ax25/af_ax25.c | 2 +-
    net/ax25/ax25_route.c | 2 +-
    net/core/dev.c | 8 +-
    net/core/scm.c | 8 +-
    net/ipv6/ip6_flowlabel.c | 2 +-
    net/netrom/af_netrom.c | 4 +-
    net/rose/af_rose.c | 4 +-
    net/socket.c | 4 +-
    net/sunrpc/auth.c | 4 +-
    net/unix/af_unix.c | 11 +-
    security/capability.c | 3 +-
    security/commoncap.c | 90 ++++++-----
    security/keys/internal.h | 38 ++++-
    security/keys/key.c | 2 +-
    security/keys/keyctl.c | 120 +++++++++------
    security/keys/keyring.c | 1 +
    security/keys/process_keys.c | 88 +++++++----
    security/keys/request_key.c | 83 +++++++----
    security/keys/request_key_auth.c | 7 +-
    security/root_plug.c | 3 +-
    security/security.c | 28 ++--
    security/selinux/hooks.c | 41 ++++--
    security/smack/smack_lsm.c | 49 ++++--
    151 files changed, 958 insertions(+), 931 deletions(-)
    create mode 100644 include/keys/keyring-type.h
    create mode 100644 include/linux/cred.h
    delete mode 100644 include/linux/key-ui.h


    ----

    Date: Tue, 29 Jul 2008 00:15:39 +0100
    From: David Howells <dhowells@redhat.com>
    To: jmorris@namei.org, akpm@linux-foundation.org, morgan@kernel.org
    Cc: sfr@canb.auug.org.au, dhowells@redhat.com, viro@ftp.linux.org.uk, casey@schaufler-ca.com, linux-security-module@vger.kernel.org
    Subject: [PATCH 0/7] Introduce credentials [ver #3]

    Hi James, Andrew, Stephen,

    Here are the patches I'd suggest at least considering to send upstream now:

    (1) The fix for PF_SUPERPRIV to prevent task->flags from being corrupted by
    __capable().

    (2) A patch to disperse linux/key_ui.h - it's unnecessary as keyfs went away.

    (3) A patch to alter key instantiation to not alter the keyring subscriptions
    of another process.

    (4) A patch to neuter sys_capset() so that it can't alter another process's
    capabilities.

    [Ver#2] I've added in Andrew Morgan's suggestions to remove the use of
    tasklist_lock to wrap the calls to the LSM capset hooks, and I've removed
    the target pointer from those hooks. These are unnecessary as capset can
    only affect current from this patch on.

    [Ver#3] I've further replaced target with current entirely and discarded
    the tasklist_lock around the call to task_pid_vnr() as it doesn't seem to
    be necessary, based on ptrace_notify().

    (5) A patch to constify the kern_cap_t pointers in the capset security hooks.

    (6) A patch to wrap most refs to fs[ug]id in macros so that COW creds can be
    introduced later.

    (7) A patch to wrap most refs to e?[ug]id in macros so that COW creds can be
    introduced later.

    These patches are against the head of Linus's tree. A tarball is available
    here:

    http://people.redhat.com/~dhowells/cred-for-linus-2.tar.bz2

    David



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