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Subject[PATCH 00/26] Permit filesystem local caching

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

(*) 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

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

A tarball of the patches is available at:

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

Or as individual bits:

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


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