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-rw-r--r--fs/nfs/super.c91
1 files changed, 84 insertions, 7 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 757aa3b7e64..064e69d2fdd 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1541,8 +1541,90 @@ static int nfs4_validate_mount_data(struct nfs4_mount_data **options,
*ip_addr = c;
break;
- default:
- goto out_bad_version;
+ default: {
+ unsigned int len;
+ struct nfs_parsed_mount_data args = {
+ .rsize = NFS_MAX_FILE_IO_SIZE,
+ .wsize = NFS_MAX_FILE_IO_SIZE,
+ .timeo = 600,
+ .retrans = 2,
+ .acregmin = 3,
+ .acregmax = 60,
+ .acdirmin = 30,
+ .acdirmax = 60,
+ .nfs_server.protocol = IPPROTO_TCP,
+ };
+
+ if (nfs_parse_mount_options((char *) *options, &args) == 0)
+ return -EINVAL;
+
+ if (!nfs_verify_server_address((struct sockaddr *)
+ &args.nfs_server.address))
+ return -EINVAL;
+ *addr = args.nfs_server.address;
+
+ switch (args.auth_flavor_len) {
+ case 0:
+ *authflavour = RPC_AUTH_UNIX;
+ break;
+ case 1:
+ *authflavour = (rpc_authflavor_t) args.auth_flavors[0];
+ break;
+ default:
+ goto out_inval_auth;
+ }
+
+ /*
+ * Translate to nfs4_mount_data, which nfs4_fill_super
+ * can deal with.
+ */
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (data == NULL)
+ return -ENOMEM;
+ *options = data;
+
+ data->version = 1;
+ data->flags = args.flags & NFS4_MOUNT_FLAGMASK;
+ data->rsize = args.rsize;
+ data->wsize = args.wsize;
+ data->timeo = args.timeo;
+ data->retrans = args.retrans;
+ data->acregmin = args.acregmin;
+ data->acregmax = args.acregmax;
+ data->acdirmin = args.acdirmin;
+ data->acdirmax = args.acdirmax;
+ data->proto = args.nfs_server.protocol;
+
+ /*
+ * Split "dev_name" into "hostname:mntpath".
+ */
+ c = strchr(dev_name, ':');
+ if (c == NULL)
+ return -EINVAL;
+ /* while calculating len, pretend ':' is '\0' */
+ len = c - dev_name;
+ if (len > NFS4_MAXNAMLEN)
+ return -EINVAL;
+ *hostname = kzalloc(len, GFP_KERNEL);
+ if (*hostname == NULL)
+ return -ENOMEM;
+ strncpy(*hostname, dev_name, len - 1);
+
+ c++; /* step over the ':' */
+ len = strlen(c);
+ if (len > NFS4_MAXPATHLEN)
+ return -EINVAL;
+ *mntpath = kzalloc(len + 1, GFP_KERNEL);
+ if (*mntpath == NULL)
+ return -ENOMEM;
+ strncpy(*mntpath, c, len);
+
+ dprintk("MNTPATH: %s\n", *mntpath);
+
+ *ip_addr = args.client_address;
+
+ break;
+ }
}
return 0;
@@ -1559,11 +1641,6 @@ out_inval_auth:
out_no_address:
dfprintk(MOUNT, "NFS4: mount program didn't pass remote address\n");
return -EINVAL;
-
-out_bad_version:
- dfprintk(MOUNT, "NFS4: bad nfs_mount_data version %d\n",
- data->version);
- return -EINVAL;
}
/*