1. 23 Jun, 2015 10 commits
  2. 19 Jun, 2015 2 commits
    • David Howells's avatar
      overlayfs: Make f_path always point to the overlay and f_inode to the underlay · 4bacc9c9
      David Howells authored
      Make file->f_path always point to the overlay dentry so that the path in
      /proc/pid/fd is correct and to ensure that label-based LSMs have access to the
      overlay as well as the underlay (path-based LSMs probably don't need it).
      
      Using my union testsuite to set things up, before the patch I see:
      
      	[root@andromeda union-testsuite]# bash 5</mnt/a/foo107
      	[root@andromeda union-testsuite]# ls -l /proc/$$/fd/
      	...
      	lr-x------. 1 root root 64 Jun  5 14:38 5 -> /a/foo107
      	[root@andromeda union-testsuite]# stat /mnt/a/foo107
      	...
      	Device: 23h/35d Inode: 13381       Links: 1
      	...
      	[root@andromeda union-testsuite]# stat -L /proc/$$/fd/5
      	...
      	Device: 23h/35d Inode: 13381       Links: 1
      	...
      
      After the patch:
      
      	[root@andromeda union-testsuite]# bash 5</mnt/a/foo107
      	[root@andromeda union-testsuite]# ls -l /proc/$$/fd/
      	...
      	lr-x------. 1 root root 64 Jun  5 14:22 5 -> /mnt/a/foo107
      	[root@andromeda union-testsuite]# stat /mnt/a/foo107
      	...
      	Device: 23h/35d Inode: 40346       Links: 1
      	...
      	[root@andromeda union-testsuite]# stat -L /proc/$$/fd/5
      	...
      	Device: 23h/35d Inode: 40346       Links: 1
      	...
      
      Note the change in where /proc/$$/fd/5 points to in the ls command.  It was
      pointing to /a/foo107 (which doesn't exist) and now points to /mnt/a/foo107
      (which is correct).
      
      The inode accessed, however, is the lower layer.  The union layer is on device
      25h/37d and the upper layer on 24h/36d.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      4bacc9c9
    • David Howells's avatar
      overlay: Call ovl_drop_write() earlier in ovl_dentry_open() · f25801ee
      David Howells authored
      Call ovl_drop_write() earlier in ovl_dentry_open() before we call vfs_open()
      as we've done the copy up for which we needed the freeze-write lock by that
      point.
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      f25801ee
  3. 17 Jun, 2015 1 commit
  4. 16 Jun, 2015 5 commits
  5. 14 Jun, 2015 2 commits
  6. 29 May, 2015 1 commit
    • Al Viro's avatar
      d_walk() might skip too much · 2159184e
      Al Viro authored
      when we find that a child has died while we'd been trying to ascend,
      we should go into the first live sibling itself, rather than its sibling.
      
      Off-by-one in question had been introduced in "deal with deadlock in
      d_walk()" and the fix needs to be backported to all branches this one
      has been backported to.
      
      Cc: stable@vger.kernel.org # 3.2 and later
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      2159184e
  7. 15 May, 2015 19 commits