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authorChuck Lever <chuck.lever@oracle.com>2008-12-06 03:03:39 +0300
committerJ. Bruce Fields <bfields@citi.umich.edu>2009-01-06 19:53:54 +0300
commit576df4634e37e46b441fefb91915184edb13bb94 (patch)
tree85dc6dc6dcf7eec104b7c78885a9e38123bb220f
parent7fefc9cb9d5f129c238d93166f705c96ca2e7e51 (diff)
downloadlinux-576df4634e37e46b441fefb91915184edb13bb94.tar.xz
NLM: Decode "priv" argument of NLMPROC_SM_NOTIFY as an opaque
The NLM XDR decoders for the NLMPROC_SM_NOTIFY procedure should treat their "priv" argument truly as an opaque, as defined by the protocol, and let the upper layers figure out what is in it. This will make it easier to modify the contents and interpretation of the "priv" argument, and keep knowledge about what's in "priv" local to fs/lockd/mon.c. For now, the NLM and NSM implementations should behave exactly as they did before. The formation of the address of the rebooted host in nlm_host_rebooted() may look a little strange, but it is the inverse of how nsm_init_private() forms the private cookie. Plus, it's going away soon anyway. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
-rw-r--r--fs/lockd/host.c3
-rw-r--r--fs/lockd/xdr.c4
-rw-r--r--fs/lockd/xdr4.c4
-rw-r--r--include/linux/lockd/xdr.h8
4 files changed, 10 insertions, 9 deletions
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index ed103387964d..dc41e46ef74c 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -453,9 +453,10 @@ void nlm_release_host(struct nlm_host *host)
*/
void nlm_host_rebooted(const struct nlm_reboot *info)
{
+ __be32 *p = (__be32 *)&info->priv.data;
const struct sockaddr_in sin = {
.sin_family = AF_INET,
- .sin_addr.s_addr = info->addr,
+ .sin_addr.s_addr = *p,
};
struct hlist_head *chain;
struct hlist_node *pos;
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 1f226290c67c..4cc7d01a1eb5 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -349,8 +349,8 @@ nlmsvc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp)
if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
return 0;
argp->state = ntohl(*p++);
- /* Preserve the address in network byte order */
- argp->addr = *p++;
+ memcpy(&argp->priv.data, p, sizeof(argp->priv.data));
+ p += XDR_QUADLEN(SM_PRIV_SIZE);
return xdr_argsize_check(rqstp, p);
}
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c
index 50c493a8ad8e..61d1714a470e 100644
--- a/fs/lockd/xdr4.c
+++ b/fs/lockd/xdr4.c
@@ -356,8 +356,8 @@ nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp
if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
return 0;
argp->state = ntohl(*p++);
- /* Preserve the address in network byte order */
- argp->addr = *p++;
+ memcpy(&argp->priv.data, p, sizeof(argp->priv.data));
+ p += XDR_QUADLEN(SM_PRIV_SIZE);
return xdr_argsize_check(rqstp, p);
}
diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
index 6b5199263858..6338866222a8 100644
--- a/include/linux/lockd/xdr.h
+++ b/include/linux/lockd/xdr.h
@@ -83,10 +83,10 @@ struct nlm_res {
* statd callback when client has rebooted
*/
struct nlm_reboot {
- char * mon;
- unsigned int len;
- u32 state;
- __be32 addr;
+ char *mon;
+ unsigned int len;
+ u32 state;
+ struct nsm_private priv;
};
/*