[PULL][unstable] namespace mount patches for 4.8

[Seth Forshee]

The following changes since commit b6afef49069d5f8dccc5742cd7f51579ca92dd60:

  UBUNTU: Ubuntu-4.8.0-4.5 (2016-08-23 13:22:11 -0600)

are available in the git repository at:

  git://git.launchpad.net/~sforshee/+git/linux-unstable nsmount

for you to fetch changes up to cd6e426ab2d6fcfdeb5a14ec253dbdc0b2378f28:

  UBUNTU: SAUCE: (namespace) ext4: Add module parameter to enable user namespace mounts (2016-08-25 08:36:06 -0400)

----------------------------------------------------------------
Eric W. Biederman (1):
      UBUNTU: SAUCE: (namespace) fs: Allow superblock owner to change ownership of inodes

Seth Forshee (16):
      UBUNTU: SAUCE: (namespace) security/integrity: Harden against malformed xattrs
      UBUNTU: SAUCE: (namespace) block_dev: Support checking inode permissions in lookup_bdev()
      UBUNTU: SAUCE: (namespace) block_dev: Check permissions towards block device inode when mounting
      UBUNTU: SAUCE: (namespace) mtd: Check permissions towards mtd block device inode when mounting
      UBUNTU: SAUCE: (namespace) fs: Don't remove suid for CAP_FSETID for userns root
      UBUNTU: SAUCE: (namespace) fs: Allow superblock owner to access do_remount_sb()
      UBUNTU: SAUCE: (namespace) capabilities: Allow privileged user in s_user_ns to set security.* xattrs
      UBUNTU: SAUCE: (namespace) fs: Allow CAP_SYS_ADMIN in s_user_ns to freeze and thaw filesystems
      UBUNTU: SAUCE: (namespace) posix_acl: Export posix_acl_fix_xattr_userns() to modules
      UBUNTU: SAUCE: (namespace) fuse: Add support for pid namespaces
      UBUNTU: SAUCE: (namespace) fuse: Support fuse filesystems outside of init_user_ns
      UBUNTU: SAUCE: (namespace) fuse: Translate ids in posix acl xattrs
      UBUNTU: SAUCE: (namespace) fuse: Restrict allow_other to the superblock's namespace or a descendant
      UBUNTU: SAUCE: (namespace) fuse: Allow user namespace mounts
      UBUNTU: SAUCE: (namespace) ext4: Add support for unprivileged mounts from user namespaces
      UBUNTU: SAUCE: (namespace) ext4: Add module parameter to enable user namespace mounts

 drivers/md/bcache/super.c             |  2 +-
 drivers/md/dm-table.c                 |  2 +-
 drivers/mtd/mtdsuper.c                |  6 +++-
 fs/attr.c                             | 34 ++++++++++++++-----
 fs/block_dev.c                        | 18 ++++++++--
 fs/ext4/acl.c                         | 31 +++++++++++------
 fs/ext4/balloc.c                      |  4 +--
 fs/ext4/ialloc.c                      |  7 ++--
 fs/ext4/inode.c                       | 18 +++++-----
 fs/ext4/ioctl.c                       | 10 +++---
 fs/ext4/namei.c                       | 16 ++++-----
 fs/ext4/resize.c                      |  2 +-
 fs/ext4/super.c                       | 64 +++++++++++++++++++++++++++--------
 fs/fuse/cuse.c                        |  3 +-
 fs/fuse/dev.c                         | 25 ++++++++++----
 fs/fuse/dir.c                         | 46 +++++++++++++++++++------
 fs/fuse/file.c                        | 22 +++++++++---
 fs/fuse/fuse_i.h                      | 10 +++++-
 fs/fuse/inode.c                       | 40 ++++++++++++++--------
 fs/inode.c                            |  6 ++--
 fs/ioctl.c                            |  4 +--
 fs/namespace.c                        |  4 +--
 fs/posix_acl.c                        | 42 ++++++++++++++---------
 fs/proc/base.c                        |  7 ++++
 fs/proc/generic.c                     |  7 ++++
 fs/proc/proc_sysctl.c                 |  7 ++++
 fs/quota/quota.c                      |  2 +-
 include/linux/fs.h                    |  2 +-
 include/linux/posix_acl_xattr.h       |  9 +++++
 include/linux/projid.h                |  5 +++
 kernel/user_namespace.c               |  1 +
 security/commoncap.c                  | 12 ++++---
 security/integrity/digsig.c           |  2 +-
 security/integrity/evm/evm_main.c     |  4 +++
 security/integrity/ima/ima_appraise.c |  5 ++-
 35 files changed, 348 insertions(+), 131 deletions(-)