Switch to using the new mon_id encoder function.
Now that we've refactored the encoding of SM_MON requests, we've
discovered that the pre-computed buffer length maximums are
incorrect!
Signed-off-by: Chuck Lever <[email protected]>
---
fs/lockd/mon.c | 39 ++++++++-------------------------------
1 files changed, 8 insertions(+), 31 deletions(-)
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index 3935d7b..f2507fe 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -149,6 +149,9 @@ nsm_create(void)
/*
* XDR functions for NSM.
+ *
+ * See http://www.opengroup.org/ for details on the Network
+ * Status Monitor wire protocol.
*/
static __be32 *xdr_encode_nsm_string(__be32 *p, char *string)
@@ -215,37 +218,10 @@ static __be32 *xdr_encode_mon_id(__be32 *p, struct nsm_args *argp)
return xdr_encode_my_id(p, argp);
}
-static __be32 *
-xdr_encode_common(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
-{
- char buffer[20], *name;
-
- /*
- * Use the dotted-quad IP address of the remote host as
- * identifier. Linux statd always looks up the canonical
- * hostname first for whatever remote hostname it receives,
- * so this works alright.
- */
- if (nsm_use_hostnames) {
- name = argp->mon_name;
- } else {
- sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(argp->addr));
- name = buffer;
- }
- if (!(p = xdr_encode_string(p, name))
- || !(p = xdr_encode_string(p, utsname()->nodename)))
- return ERR_PTR(-EIO);
- *p++ = htonl(argp->prog);
- *p++ = htonl(argp->vers);
- *p++ = htonl(argp->proc);
-
- return p;
-}
-
static int
xdr_encode_mon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
{
- p = xdr_encode_common(rqstp, p, argp);
+ p = xdr_encode_mon_id(p, argp);
if (IS_ERR(p))
return PTR_ERR(p);
@@ -261,7 +237,7 @@ xdr_encode_mon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
static int
xdr_encode_unmon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
{
- p = xdr_encode_common(rqstp, p, argp);
+ p = xdr_encode_mon_id(p, argp);
if (IS_ERR(p))
return PTR_ERR(p);
rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
@@ -286,8 +262,9 @@ xdr_decode_stat(struct rpc_rqst *rqstp, __be32 *p, struct nsm_res *resp)
}
#define SM_my_name_sz (1+XDR_QUADLEN(SM_MAXSTRLEN))
-#define SM_my_id_sz (3+1+SM_my_name_sz)
-#define SM_mon_id_sz (1+XDR_QUADLEN(20)+SM_my_id_sz)
+#define SM_my_id_sz (SM_my_name_sz+3)
+#define SM_mon_name_sz (1+XDR_QUADLEN(SM_MAXSTRLEN))
+#define SM_mon_id_sz (SM_mon_name_sz+SM_my_id_sz)
#define SM_mon_sz (SM_mon_id_sz+4)
#define SM_monres_sz 2
#define SM_unmonres_sz 1