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[PATCH 00/26] Permit filesystem local caching

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From: David Howells <dhowells@...>
To: <sds@...>, <casey@...>, <Trond.Myklebust@...>, <npiggin@...>
Cc: <linux-kernel@...>, <selinux@...>, <linux-security-module@...>, <dhowells@...>
Subject: [PATCH 00/26] Permit filesystem local caching
Date: Tuesday, January 15, 2008 - 7:46 pm

These patches add local caching for network filesystems such as NFS.

The patches can roughly be broken down into a number of sets:

  (*) 01-keys-inc-payload.diff
  (*) 02-keys-search-keyring.diff
  (*) 03-keys-callout-blob.diff

      Three patches to the keyring code made to help the CIFS people.
      Included because of patches 05-08.

  (*) 04-keys-get-label.diff

      A patch to allow the security label of a key to be retrieved.
      Included because of patches 05-08.

  (*) 05-security-current-fsugid.diff
  (*) 06-security-separate-task-bits.diff
  (*) 07-security-subjective.diff
  (*) 08-security-secctx2secid.diff
  (*) 09-security-additional-classes.diff
  (*) 10-security-kernel_service-class.diff
  (*) 11-security-kernel-service.diff

      Patches to permit the subjective security of a task to be overridden.
      All the security details in task_struct are decanted into a new struct
      that task_struct then has two pointers two: one that defines the
      objective security of that task (how other tasks may affect it) and one
      that defines the subjective security (how it may affect other objects).

      Note that I have dropped the idea of struct cred for the moment.  With
      the amount of stuff that was excluded from it, it wasn't actually any
      use to me.  However, it can be added later.

      Required for cachefiles.

  (*) 12-release-page.diff
  (*) 13-fscache-page-flags.diff
  (*) 14-add_wait_queue_tail.diff
  (*) 15-fscache.diff

      Patches to provide a local caching facility for network filesystems.

  (*) 16-cachefiles-ia64.diff
  (*) 17-cachefiles-ext3-f_mapping.diff
  (*) 18-cachefiles-write.diff
  (*) 19-cachefiles-monitor.diff
  (*) 20-cachefiles-export.diff
  (*) 21-cachefiles.diff

      Patches to provide a local cache in a directory of an already mounted
      filesystem.

  (*) 22-nfs-memleak.diff
  (*) 23-fscache-nfs.diff
  (*) 24-fscache-nfs-mount.diff
  (*) 25-fscache-nfs-display.diff
  (*) 26-fscache-nfs-persb.diff

      Patches to provide NFS with local caching.  The fifth of these patches
      makes caching configurable per superblock.

This release is mainly for the security guys (esp Stephen and Casey) to have a
look at to see if they are happy with the security stuff.

The SELinux base code will also need updating to have the security class, lest
the following error appear in dmesg:

	context_struct_compute_av:  unrecognized class 69


I know Nick Piggin has a couple of issues still, but I'll look again at those
next.

Andrew, Linus, can you please hold off on taking these patches for the moment.


--
A tarball of the patches is available at:

	http://people.redhat.com/~dhowells/fscache/patches/nfs+fscache-26.tar.bz2


To use this version of CacheFiles, the cachefilesd-0.9 is also required.  It
is available as an SRPM:

	http://people.redhat.com/~dhowells/fscache/cachefilesd-0.9-1.fc7.src.rpm

Or as individual bits:

	http://people.redhat.com/~dhowells/fscache/cachefilesd-0.9.tar.bz2
	http://people.redhat.com/~dhowells/fscache/cachefilesd.fc
	http://people.redhat.com/~dhowells/fscache/cachefilesd.if
	http://people.redhat.com/~dhowells/fscache/cachefilesd.te
	http://people.redhat.com/~dhowells/fscache/cachefilesd.spec

The .fc, .if and .te files are for manipulating SELinux.

David
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Messages in current thread:
[PATCH 00/26] Permit filesystem local caching, David Howells, (Tue Jan 15, 7:46 pm)
Re: [PATCH 00/26] Permit filesystem local caching, Kyle Moffett, (Tue Jan 15, 10:24 pm)
Re: [PATCH 00/26] Permit filesystem local caching, David Howells, (Wed Jan 16, 12:55 pm)
Re: [PATCH 00/26] Permit filesystem local caching, James Morris, (Tue Jan 15, 9:52 pm)
Re: [PATCH 00/26] Permit filesystem local caching, James Morris, (Tue Jan 15, 8:58 pm)
Re: [PATCH 00/26] Permit filesystem local caching, David Howells, (Wed Jan 16, 12:48 pm)
[PATCH 26/26] NFS: Separate caching by superblock, explicitl..., David Howells, (Tue Jan 15, 7:49 pm)
[PATCH 25/26] NFS: Display local caching state, David Howells, (Tue Jan 15, 7:49 pm)
[PATCH 24/26] NFS: Configuration and mount option changes to..., David Howells, (Tue Jan 15, 7:49 pm)
[PATCH 23/26] NFS: Use local caching, David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 21/26] CacheFiles: A cache that backs onto a mounted ..., David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 22/26] NFS: Fix memory leak, David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 19/26] CacheFiles: Permit the page lock state to be m..., David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 20/26] CacheFiles: Export things for CacheFiles, David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 18/26] CacheFiles: Add a hook to write a single page ..., David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 15/26] FS-Cache: Generic filesystem caching facility, David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 17/26] CacheFiles: Be consistent about the use of map..., David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 16/26] CacheFiles: Add missing copy_page export for i..., David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 08/26] Add a secctx_to_secid() LSM hook to go along w..., David Howells, (Tue Jan 15, 7:47 pm)
Re: [PATCH 08/26] Add a secctx_to_secid() LSM hook to go alo..., James Morris, (Tue Jan 15, 9:05 pm)
Re: [PATCH 08/26] Add a secctx_to_secid() LSM hook to go alo..., Paul Moore, (Wed Jan 16, 9:41 am)
Re: [PATCH 08/26] Add a secctx_to_secid() LSM hook to go alo..., James Morris, (Wed Jan 16, 6:13 pm)
Re: [PATCH 08/26] Add a secctx_to_secid() LSM hook to go alo..., Paul Moore, (Wed Jan 16, 6:19 pm)
Re: [PATCH 08/26] Add a secctx_to_secid() LSM hook to go alo..., Casey Schaufler, (Wed Jan 16, 1:08 pm)
[PATCH 13/26] FS-Cache: Recruit a couple of page flags for c..., David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 12/26] FS-Cache: Release page-&gt;private after faile..., David Howells, (Tue Jan 15, 7:47 pm)
[PATCH 14/26] FS-Cache: Provide an add_wait_queue_tail() fun..., David Howells, (Tue Jan 15, 7:48 pm)
[PATCH 10/26] Security: Add a kernel_service object class to..., David Howells, (Tue Jan 15, 7:47 pm)
[PATCH 09/26] Security: Pre-add additional non-caching classes, David Howells, (Tue Jan 15, 7:47 pm)
[PATCH 11/26] Security: Allow kernel services to override LS..., David Howells, (Tue Jan 15, 7:47 pm)
[PATCH 06/26] Security: Separate task security context from ..., David Howells, (Tue Jan 15, 7:47 pm)
[PATCH 06b/26] Security: Make NFSD work with detached security, David Howells, (Thu Jan 17, 1:17 pm)
Re: [PATCH 06b/26] Security: Make NFSD work with detached se..., J. Bruce Fields, (Thu Jan 17, 4:48 pm)
Re: [PATCH 06b/26] Security: Make NFSD work with detached se..., David Howells, (Thu Jan 17, 6:48 pm)
Re: [PATCH 06b/26] Security: Make NFSD work with detached se..., David Howells, (Thu Jan 17, 7:02 pm)
[PATCH 06a/26] Extra task_struct -&gt; task_security separation, David Howells, (Thu Jan 17, 1:14 pm)
[PATCH 07/26] Security: De-embed task security record from t..., David Howells, (Tue Jan 15, 7:47 pm)
[PATCH 05/26] Security: Change current-&gt;fs[ug]id to curre..., David Howells, (Tue Jan 15, 7:47 pm)
[PATCH 03/26] KEYS: Allow the callout data to be passed as a..., David Howells, (Tue Jan 15, 7:47 pm)
[PATCH 04/26] KEYS: Add keyctl function to get a security la..., David Howells, (Tue Jan 15, 7:47 pm)
Re: [PATCH 04/26] KEYS: Add keyctl function to get a securit..., Stephen Smalley, (Wed Jan 16, 11:47 am)
[PATCH 01/26] KEYS: Increase the payload size when instantia..., David Howells, (Tue Jan 15, 7:46 pm)
[PATCH 02/26] KEYS: Check starting keyring as part of search, David Howells, (Tue Jan 15, 7:47 pm)