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authorWeston Andros Adamson <dros@netapp.com>2013-10-18 15:15:16 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-10-28 15:36:58 -0400
commita3f73c27afff9590a4432879b7145289cb89cf0a (patch)
tree6d010e25f69bbcee77e22285b280a5f446add578 /fs/nfs/super.c
parent47fd88e6b79c55e6acccaf832078ed1a340672fa (diff)
downloadleg-kernel-a3f73c27afff9590a4432879b7145289cb89cf0a.tar.gz
NFS: separate passed security flavs from selected
When filling parsed_mount_data, store the parsed sec= mount option in the new struct nfs_auth_info and the chosen flavor in selected_flavor. This patch lays the groundwork for supporting multiple sec= options. Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r--fs/nfs/super.c47
1 files changed, 22 insertions, 25 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index e26647be69ce..b87744fb9dcd 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -923,8 +923,7 @@ static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
data->mount_server.port = NFS_UNSPEC_PORT;
data->nfs_server.port = NFS_UNSPEC_PORT;
data->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- data->auth_flavors[0] = RPC_AUTH_MAXFLAVOR;
- data->auth_flavor_len = 0;
+ data->selected_flavor = RPC_AUTH_MAXFLAVOR;
data->minorversion = 0;
data->need_mount = true;
data->net = current->nsproxy->net_ns;
@@ -1019,13 +1018,6 @@ static void nfs_set_mount_transport_protocol(struct nfs_parsed_mount_data *mnt)
}
}
-static void nfs_set_auth_parsed_mount_data(struct nfs_parsed_mount_data *data,
- rpc_authflavor_t pseudoflavor)
-{
- data->auth_flavors[0] = pseudoflavor;
- data->auth_flavor_len = 1;
-}
-
/*
* Parse the value of the 'sec=' option.
*/
@@ -1076,7 +1068,8 @@ static int nfs_parse_security_flavors(char *value,
}
mnt->flags |= NFS_MOUNT_SECFLAVOUR;
- nfs_set_auth_parsed_mount_data(mnt, pseudoflavor);
+ mnt->auth_info.flavors[0] = pseudoflavor;
+ mnt->auth_info.flavor_len = 1;
return 1;
}
@@ -1623,7 +1616,7 @@ out_security_failure:
}
/*
- * Ensure that the specified authtype in args->auth_flavors[0] is supported by
+ * Ensure that the specified authtype in args->auth_info is supported by
* the server. Returns 0 if it's ok, and -EACCES if not.
*/
static int nfs_verify_authflavor(struct nfs_parsed_mount_data *args,
@@ -1640,17 +1633,18 @@ static int nfs_verify_authflavor(struct nfs_parsed_mount_data *args,
* can be used.
*/
for (i = 0; i < count; i++) {
- if (args->auth_flavors[0] == server_authlist[i] ||
+ if (args->auth_info.flavors[0] == server_authlist[i] ||
server_authlist[i] == RPC_AUTH_NULL)
goto out;
}
dfprintk(MOUNT, "NFS: auth flavor %u not supported by server\n",
- args->auth_flavors[0]);
+ args->auth_info.flavors[0]);
return -EACCES;
out:
- dfprintk(MOUNT, "NFS: using auth flavor %u\n", args->auth_flavors[0]);
+ args->selected_flavor = args->auth_info.flavors[0];
+ dfprintk(MOUNT, "NFS: using auth flavor %u\n", args->selected_flavor);
return 0;
}
@@ -1738,9 +1732,10 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
* Was a sec= authflavor specified in the options? First, verify
* whether the server supports it, and then just try to use it if so.
*/
- if (args->auth_flavor_len > 0) {
+ if (args->auth_info.flavor_len > 0) {
status = nfs_verify_authflavor(args, authlist, authlist_len);
- dfprintk(MOUNT, "NFS: using auth flavor %u\n", args->auth_flavors[0]);
+ dfprintk(MOUNT, "NFS: using auth flavor %u\n",
+ args->selected_flavor);
if (status)
return ERR_PTR(status);
return nfs_mod->rpc_ops->create_server(mount_info, nfs_mod);
@@ -1769,7 +1764,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
/* Fallthrough */
}
dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", flavor);
- nfs_set_auth_parsed_mount_data(args, flavor);
+ args->selected_flavor = flavor;
server = nfs_mod->rpc_ops->create_server(mount_info, nfs_mod);
if (!IS_ERR(server))
return server;
@@ -1785,7 +1780,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
/* Last chance! Try AUTH_UNIX */
dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", RPC_AUTH_UNIX);
- nfs_set_auth_parsed_mount_data(args, RPC_AUTH_UNIX);
+ args->selected_flavor = RPC_AUTH_UNIX;
return nfs_mod->rpc_ops->create_server(mount_info, nfs_mod);
}
@@ -1972,9 +1967,9 @@ static int nfs23_validate_mount_data(void *options,
args->bsize = data->bsize;
if (data->flags & NFS_MOUNT_SECFLAVOUR)
- nfs_set_auth_parsed_mount_data(args, data->pseudoflavor);
+ args->selected_flavor = data->pseudoflavor;
else
- nfs_set_auth_parsed_mount_data(args, RPC_AUTH_UNIX);
+ args->selected_flavor = RPC_AUTH_UNIX;
if (!args->nfs_server.hostname)
goto out_nomem;
@@ -2108,7 +2103,7 @@ static int nfs_validate_text_mount_data(void *options,
nfs_set_port(sap, &args->nfs_server.port, port);
- if (args->auth_flavor_len > 1)
+ if (args->auth_info.flavor_len > 1)
goto out_bad_auth;
return nfs_parse_devname(dev_name,
@@ -2146,7 +2141,7 @@ nfs_compare_remount_data(struct nfs_server *nfss,
data->version != nfss->nfs_client->rpc_ops->version ||
data->minorversion != nfss->nfs_client->cl_minorversion ||
data->retrans != nfss->client->cl_timeout->to_retries ||
- data->auth_flavors[0] != nfss->client->cl_auth->au_flavor ||
+ data->selected_flavor != nfss->client->cl_auth->au_flavor ||
data->acregmin != nfss->acregmin / HZ ||
data->acregmax != nfss->acregmax / HZ ||
data->acdirmin != nfss->acdirmin / HZ ||
@@ -2191,7 +2186,9 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
data->rsize = nfss->rsize;
data->wsize = nfss->wsize;
data->retrans = nfss->client->cl_timeout->to_retries;
- nfs_set_auth_parsed_mount_data(data, nfss->client->cl_auth->au_flavor);
+ data->selected_flavor = nfss->client->cl_auth->au_flavor;
+ data->auth_info.flavors[0] = nfss->client->cl_auth->au_flavor;
+ data->auth_info.flavor_len = 1;
data->acregmin = nfss->acregmin / HZ;
data->acregmax = nfss->acregmax / HZ;
data->acdirmin = nfss->acdirmin / HZ;
@@ -2718,9 +2715,9 @@ static int nfs4_validate_mount_data(void *options,
data->auth_flavours,
sizeof(pseudoflavor)))
return -EFAULT;
- nfs_set_auth_parsed_mount_data(args, pseudoflavor);
+ args->selected_flavor = pseudoflavor;
} else
- nfs_set_auth_parsed_mount_data(args, RPC_AUTH_UNIX);
+ args->selected_flavor = RPC_AUTH_UNIX;
c = strndup_user(data->hostname.data, NFS4_MAXNAMLEN);
if (IS_ERR(c))