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| author | Chuck Lever <chuck.lever@oracle.com> | 2019-02-11 19:24:58 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-02-14 17:11:18 +0300 |
| commit | a0584ee9aed805446b044ce855e67264f0dc619e (patch) | |
| tree | f32c32e668db5a918b86f6562c639f71f353b6cf /net/sunrpc/auth_null.c | |
| parent | 7f5667a5f8c4ff85b14ccce9d41f9244bd30ab68 (diff) | |
| download | linux-a0584ee9aed805446b044ce855e67264f0dc619e.tar.xz | |
SUNRPC: Use struct xdr_stream when decoding RPC Reply header
Modernize and harden the code path that parses an RPC Reply
message.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/auth_null.c')
| -rw-r--r-- | net/sunrpc/auth_null.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/net/sunrpc/auth_null.c b/net/sunrpc/auth_null.c index 797f8472c21b..bf96975ffc4b 100644 --- a/net/sunrpc/auth_null.c +++ b/net/sunrpc/auth_null.c @@ -86,25 +86,19 @@ nul_refresh(struct rpc_task *task) return 0; } -static __be32 * -nul_validate(struct rpc_task *task, __be32 *p) +static int +nul_validate(struct rpc_task *task, struct xdr_stream *xdr) { - rpc_authflavor_t flavor; - u32 size; - - flavor = ntohl(*p++); - if (flavor != RPC_AUTH_NULL) { - printk("RPC: bad verf flavor: %u\n", flavor); - return ERR_PTR(-EIO); - } - - size = ntohl(*p++); - if (size != 0) { - printk("RPC: bad verf size: %u\n", size); - return ERR_PTR(-EIO); - } - - return p; + __be32 *p; + + p = xdr_inline_decode(xdr, 2 * sizeof(*p)); + if (!p) + return -EIO; + if (*p++ != rpc_auth_null) + return -EIO; + if (*p != xdr_zero) + return -EIO; + return 0; } const struct rpc_authops authnull_ops = { @@ -134,6 +128,7 @@ const struct rpc_credops null_credops = { .crwrap_req = rpcauth_wrap_req_encode, .crrefresh = nul_refresh, .crvalidate = nul_validate, + .crunwrap_resp = rpcauth_unwrap_resp_decode, }; static |