[PATCH 05/18] nfsd: add fh_fsid_match helper

Christoph Hellwig
2015-01-06T16:29:39Z

Add a helper to check that the fsid parts of two file handles match.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/nfsd/nfsfh.h | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index e24d954..84cae20 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -196,6 +196,15 @@ static inline bool fh_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2)
return true;
}

+static inline bool fh_fsid_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2)
+{
+ if (fh1->fh_fsid_type != fh2->fh_fsid_type)
+ return false;
+ if (memcmp(fh1->fh_fsid, fh2->fh_fsid, key_len(fh1->fh_fsid_type) != 0))
+ return false;
+ return true;
+}
+
#ifdef CONFIG_NFSD_V3
/*
* The wcc data stored in current_fh should be cleared
--
1.9.1