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authorChuck Lever <chuck.lever@oracle.com>2017-08-01 18:59:58 +0300
committerJ. Bruce Fields <bfields@redhat.com>2017-08-25 05:13:50 +0300
commitc1df609d9dcec5dcb89ee3091edc3671da1c9996 (patch)
treeb4c7ea7ca342e71533893e218910664324e8dc75 /fs/nfsd
parent2412e927604e0af7e17ae4b688b85a1e87e378fe (diff)
downloadlinux-c1df609d9dcec5dcb89ee3091edc3671da1c9996.tar.xz
nfsd: Const-ify NFSv4 encoding and decoding ops arrays
Close an attack vector by moving the arrays of encoding and decoding methods to read-only memory. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4xdr.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 18b9c2fad29a..0c3b935d100f 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1780,7 +1780,7 @@ nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
-static nfsd4_dec nfsd4_dec_ops[] = {
+static const nfsd4_dec nfsd4_dec_ops[] = {
[OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
[OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
[OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
@@ -4224,7 +4224,7 @@ typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
* since we don't need to filter out obsolete ops as this is
* done in the decoding phase.
*/
-static nfsd4_enc nfsd4_enc_ops[] = {
+static const nfsd4_enc nfsd4_enc_ops[] = {
[OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access,
[OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close,
[OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit,