From 504e518953a330c8d44a95bdd65a5c9f50f1012e Mon Sep 17 00:00:00 2001 From: Neil Brown Date: Thu, 16 Oct 2008 14:15:16 +1100 Subject: Make nfs_file_cred more robust. As not all files have an associated open_context (e.g. device special files), it is safest to test for the existence of the open context before de-referencing it. Signed-off-by: NeilBrown Signed-off-by: Trond Myklebust --- include/linux/nfs_fs.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux/nfs_fs.h') diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index ac8d0233b05..4eaa8347a0d 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -367,8 +367,12 @@ static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) static inline struct rpc_cred *nfs_file_cred(struct file *file) { - if (file != NULL) - return nfs_file_open_context(file)->cred; + if (file != NULL) { + struct nfs_open_context *ctx = + nfs_file_open_context(file); + if (ctx) + return ctx->cred; + } return NULL; } -- cgit v1.2.3-70-g09d2