diff options
| -rw-r--r-- | fs/nfs/super.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 7e56411e55f..48db52a7067 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -992,6 +992,63 @@ out_unknown: } /* + * Use the remote server's MOUNT service to request the NFS file handle + * corresponding to the provided path. + */ +static int nfs_try_mount(struct nfs_parsed_mount_data *args, + struct nfs_fh *root_fh) +{ + struct sockaddr_in sin; + int status; + + if (args->mount_server.version == 0) { + if (args->flags & NFS_MOUNT_VER3) + args->mount_server.version = NFS_MNT3_VERSION; + else + args->mount_server.version = NFS_MNT_VERSION; + } + + /* + * Construct the mount server's address. + */ + if (args->mount_server.address.sin_addr.s_addr != INADDR_ANY) + sin = args->mount_server.address; + else + sin = args->nfs_server.address; + if (args->mount_server.port == 0) { + status = rpcb_getport_sync(&sin, + args->mount_server.program, + args->mount_server.version, + args->mount_server.protocol); + if (status < 0) + goto out_err; + sin.sin_port = htons(status); + } else + sin.sin_port = htons(args->mount_server.port); + + /* + * Now ask the mount server to map our export path + * to a file handle. + */ + status = nfs_mount((struct sockaddr *) &sin, + sizeof(sin), + args->nfs_server.hostname, + args->nfs_server.export_path, + args->mount_server.version, + args->mount_server.protocol, + root_fh); + if (status < 0) + goto out_err; + + return status; + +out_err: + dfprintk(MOUNT, "NFS: unable to contact server on host " + NIPQUAD_FMT "\n", NIPQUAD(sin.sin_addr.s_addr)); + return status; +} + +/* * Validate the NFS2/NFS3 mount data * - fills in the mount root filehandle */ |