diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-01-03 15:16:04 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-01-05 19:40:53 -0800 |
| commit | ceb3a16c070c403f5f9ca46b46cf2bb79ea11750 (patch) | |
| tree | 541de2598fad3fa145a94e119f70ab44edc2bf80 | |
| parent | 1fc0703af3143914a389bfa081c7acb09502ed5d (diff) | |
NFSv4: Cache the NFSv4/v4.1 client owner_id in the struct nfs_client
Ensure that we cache the NFSv4/v4.1 client owner_id so that we can
verify it when we're doing trunking detection.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| -rw-r--r-- | fs/nfs/nfs4client.c | 1 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 19 | ||||
| -rw-r--r-- | include/linux/nfs_fs_sb.h | 3 |
3 files changed, 19 insertions, 4 deletions
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index d949d0f378ec..6ee9bf69a7a6 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -228,6 +228,7 @@ static void nfs4_shutdown_client(struct nfs_client *clp) kfree(clp->cl_serverowner); kfree(clp->cl_serverscope); kfree(clp->cl_implid); + kfree(clp->cl_owner_id); } void nfs4_free_client(struct nfs_client *clp) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e7f8d5ff2581..1fab51682042 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4917,11 +4917,14 @@ static void nfs4_init_boot_verifier(const struct nfs_client *clp, } static unsigned int -nfs4_init_nonuniform_client_string(const struct nfs_client *clp, +nfs4_init_nonuniform_client_string(struct nfs_client *clp, char *buf, size_t len) { unsigned int result; + if (clp->cl_owner_id != NULL) + return strlcpy(buf, clp->cl_owner_id, len); + rcu_read_lock(); result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", clp->cl_ipaddr, @@ -4930,24 +4933,32 @@ nfs4_init_nonuniform_client_string(const struct nfs_client *clp, rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO)); rcu_read_unlock(); + clp->cl_owner_id = kstrdup(buf, GFP_KERNEL); return result; } static unsigned int -nfs4_init_uniform_client_string(const struct nfs_client *clp, +nfs4_init_uniform_client_string(struct nfs_client *clp, char *buf, size_t len) { const char *nodename = clp->cl_rpcclient->cl_nodename; + unsigned int result; + + if (clp->cl_owner_id != NULL) + return strlcpy(buf, clp->cl_owner_id, len); if (nfs4_client_id_uniquifier[0] != '\0') - return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", + result = scnprintf(buf, len, "Linux NFSv%u.%u %s/%s", clp->rpc_ops->version, clp->cl_minorversion, nfs4_client_id_uniquifier, nodename); - return scnprintf(buf, len, "Linux NFSv%u.%u %s", + else + result = scnprintf(buf, len, "Linux NFSv%u.%u %s", clp->rpc_ops->version, clp->cl_minorversion, nodename); + clp->cl_owner_id = kstrdup(buf, GFP_KERNEL); + return result; } /* diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 1e37fbb78f7a..ddea982355f3 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -74,6 +74,9 @@ struct nfs_client { /* idmapper */ struct idmap * cl_idmap; + /* Client owner identifier */ + const char * cl_owner_id; + /* Our own IP address, as a null-terminated string. * This is used to generate the mv0 callback address. */ |