lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Wed, 05 Dec 2007 19:38:18 +0000
From:	David Howells <>
Subject: [PATCH 00/28] Permit filesystem local caching [try #2]

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

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-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.

  (*) 09-release-page.diff
  (*) 10-fscache-page-flags.diff
  (*) 11-add_wait_queue_tail.diff
  (*) 12-fscache.diff

      Patches to provide a local caching facility for network filesystems.

  (*) 13-cachefiles-ia64.diff
  (*) 14-cachefiles-ext3-f_mapping.diff
  (*) 15-cachefiles-write.diff
  (*) 16-cachefiles-monitor.diff
  (*) 17-cachefiles-export.diff
  (*) 18-cachefiles.diff

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

  (*) 19-fscache-nfs.diff
  (*) 20-fscache-nfs-mount.diff
  (*) 21-fscache-nfs-display.diff

      Patches to provide NFS with local caching.

  (*) 22-fcrypt-bit-annotate.diff

      A fix for AFS.

  (*) 23-afs-testsetpageerror.diff
  (*) 24-afs-cancel_rejected_write.diff
  (*) 25-afs-rejected-writeback.diff
  (*) 26-afs-opID.diff
  (*) 27-afs-shared-writable-mmap.diff

      Patches to provide AFS with improved write support.

  (*) 28-fscache-afs.diff

      Patches to provide AFS with local caching.

There are some issues with these patches that I'd like advice on:

 (1) Is the security override stuff acceptable?

 (2) Should the audit context be placed in the task_security struct?

 (3) Should the task security context actually be shared by CLONE_THREAD?
     (should it be placed in struct thread_group_security).

 (4) How to handle superblock sharing in NFS?  (I've sent a separate email on

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.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists