[PATCH rdma-next 05/10] RDMA/uverbs: Verify MR access flags

Yishai Hadas
2020-01-08T18:06:24Z

From: Michael Guralnik <michaelgur@mellanox.com>

Verify that MR access flags that are passed from user are all supported
ones, otherwise an error is returned.

Fixes: 4fca03778351 ("IB/uverbs: Move ib_access_flags and ib_read_coun..")
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
---
include/rdma/ib_verbs.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 08cc7dc..a104e1c 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4305,6 +4305,9 @@ static inline int ib_check_mr_access(int flags)
!(flags & IB_ACCESS_LOCAL_WRITE))
return -EINVAL;

+ if (flags & ~IB_ACCESS_SUPPORTED)
+ return -EINVAL;
+
return 0;
}

--
1.8.3.1