src/patches/suse-2.6.27.25/patches.fixes/nfs-file-cred-context-null

   1 From: NeilBrown <neilb@suse.de>
   2 Subject: nfs_file_cred should cope if 'file' hasn't been opened properly
   3 Patch-mainline: Not relevant
   4 References: bnc#431785
   5
   6
   7 .. and so doesn't have a 'context'.  This can happen when e.g.
   8 a chmod on a device-special-file happens.  The object isn't opened over
   9 NFS so there is no open context, but we currently look for one when
  10 doing a setattr.
  11
  12 Signed-off-by: Neil Brown <neilb@suse.de>
  13
  14 ---
  15  include/linux/nfs_fs.h |    7 +++++--
  16  1 file changed, 5 insertions(+), 2 deletions(-)
  17
  18 --- linux-2.6.27-neilb.orig/include/linux/nfs_fs.h
  19 +++ linux-2.6.27-neilb/include/linux/nfs_fs.h
  20 @@ -372,8 +372,11 @@ static inline struct nfs_open_context *n
  21
  22  static inline struct rpc_cred *nfs_file_cred(struct file *file)
  23  {
  24 -       if (file != NULL)
  25 -               return nfs_file_open_context(file)->cred;
  26 +       if (file != NULL) {
  27 +               struct nfs_open_context *ctx = nfs_file_open_context(file);
  28 +               if (ctx)
  29 +                       return ctx->cred;
  30 +       }
  31         return NULL;
  32  }
  33