1. 28 Jun, 2007 2 commits
    • Michael Halcrow's avatar
      eCryptfs: initialize crypt_stat in setattr · e10f281b
      Michael Halcrow authored
      Recent changes in eCryptfs have made it possible to get to ecryptfs_setattr()
      with an uninitialized crypt_stat struct.  This results in a wide and colorful
      variety of unpleasantries.  This patch properly initializes the crypt_stat
      structure in ecryptfs_setattr() when it is necessary to do so.
      Signed-off-by: default avatarMichael Halcrow <mhalcrow@us.ibm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e10f281b
    • Michael Halcrow's avatar
      eCryptfs: fix write zeros behavior · 240e2df5
      Michael Halcrow authored
      This patch fixes the processes involved in wiping regions of the data during
      truncate and write events, fixing a kernel hang in 2.6.22-rc4 while assuring
      that zero values are written out to the appropriate locations during events in
      which the i_size will change.
      
      The range passed to ecryptfs_truncate() from ecryptfs_prepare_write() includes
      the page that is the object of ecryptfs_prepare_write().  This leads to a
      kernel hang as read_cache_page() is executed on the same page in the
      ecryptfs_truncate() execution path.  This patch remedies this by limiting the
      range passed to ecryptfs_truncate() so as to exclude the page that is the
      object of ecryptfs_prepare_write(); it also adds code to
      ecryptfs_prepare_write() to zero out the region of its own page when writing
      past the i_size position.  This patch also modifies ecryptfs_truncate() so
      that when a file is truncated to a smaller size, eCryptfs will zero out the
      contents of the new last page from the new size through to the end of the last
      page.
      Signed-off-by: default avatarMichael Halcrow <mhalcrow@us.ibm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      240e2df5
  2. 27 Jun, 2007 19 commits
  3. 26 Jun, 2007 19 commits