audit: overhaul audit_names handling to allow for retrying on path-based syscalls

This patchset is another minor respin of the series that I posted June
26th.

The main impetus of this series to to allow the audit_names
infrastructure to properly handle the situation where the lookup and
operation on a path-based syscall is retried.

Along with that, there are a number of bugfixes in this patch, as well
as a few minor optimizations.

This series is available via the "audit" branch of my git tree as well:

    git://git.samba.org/jlayton/linux.git audit

I'd like to see this patchset go into 3.7 if at all possible.

Eric Paris (1):
  audit: make audit_compare_dname_path use parent_len helper

Jeff Layton (9):
  audit: remove unnecessary NULL ptr checks from do_path_lookup
  audit: pass in dentry to audit_copy_inode wherever possible
  audit: no need to walk list in audit_inode if name is NULL
  audit: reverse arguments to audit_inode_child
  audit: add a new "type" field to audit_names struct
  audit: set the name_len in audit_inode for parent lookups
  audit: remove dirlen argument to audit_compare_dname_path
  audit: optimize audit_compare_dname_path
  audit: overhaul __audit_inode_child to accomodate retrying

 fs/btrfs/ioctl.c         |   2 +-
 fs/namei.c               |  22 ++++-----
 fs/open.c                |   4 +-
 fs/xattr.c               |   8 ++--
 include/linux/audit.h    |  36 +++++++++-----
 include/linux/fsnotify.h |   8 ++--
 ipc/mqueue.c             |   8 ++--
 kernel/audit.h           |   7 ++-
 kernel/audit_watch.c     |   3 +-
 kernel/auditfilter.c     |  65 +++++++++++++++++---------
 kernel/auditsc.c         | 119 +++++++++++++++++++++++++++++------------------
 11 files changed, 170 insertions(+), 112 deletions(-)

-- 
1.7.11.4

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