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| author | David Howells <dhowells@redhat.com> | 2006-08-22 20:06:09 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-09-22 23:24:32 -0400 |
| commit | 2b3de4411b3ccaeb00018c99d1bbe7203554cf7f (patch) | |
| tree | cb49ea1fe64835fdbb8335a55049e70b3d87c5ae /fs/nfs | |
| parent | b7162792b5c0e0f6e91b8997f8e6bbc76ec5420a (diff) | |
| download | linux-2b3de4411b3ccaeb00018c99d1bbe7203554cf7f.tar.gz linux-2b3de4411b3ccaeb00018c99d1bbe7203554cf7f.tar.bz2 linux-2b3de4411b3ccaeb00018c99d1bbe7203554cf7f.zip | |
NFS: Add a lookupfh NFS RPC op
Add a lookup filehandle NFS RPC op so that a file handle can be looked up
without requiring dentries and inodes and other VFS stuff when doing an NFS4
pathwalk during mounting.
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b46597fc81e1..de2006f754ef 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1583,6 +1583,52 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, return status; } +static int _nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, + struct qstr *name, struct nfs_fh *fhandle, + struct nfs_fattr *fattr) +{ + int status; + struct nfs4_lookup_arg args = { + .bitmask = server->attr_bitmask, + .dir_fh = dirfh, + .name = name, + }; + struct nfs4_lookup_res res = { + .server = server, + .fattr = fattr, + .fh = fhandle, + }; + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], + .rpc_argp = &args, + .rpc_resp = &res, + }; + + nfs_fattr_init(fattr); + + dprintk("NFS call lookupfh %s\n", name->name); + status = rpc_call_sync(server->client, &msg, 0); + dprintk("NFS reply lookupfh: %d\n", status); + if (status == -NFS4ERR_MOVED) + status = -EREMOTE; + return status; +} + +static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, + struct qstr *name, struct nfs_fh *fhandle, + struct nfs_fattr *fattr) +{ + struct nfs4_exception exception = { }; + int err; + do { + err = nfs4_handle_exception(server, + _nfs4_proc_lookupfh(server, dirfh, name, + fhandle, fattr), + &exception); + } while (exception.retry); + return err; +} + static int _nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) { @@ -3723,6 +3769,7 @@ struct nfs_rpc_ops nfs_v4_clientops = { .getroot = nfs4_proc_get_root, .getattr = nfs4_proc_getattr, .setattr = nfs4_proc_setattr, + .lookupfh = nfs4_proc_lookupfh, .lookup = nfs4_proc_lookup, .access = nfs4_proc_access, .readlink = nfs4_proc_readlink, |