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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-08-19 18:12:27 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-08-19 18:22:15 -0400 |
| commit | e571cbf1a4f8d8b6cfd4898df718dae84c75a8e1 (patch) | |
| tree | 0fc9da9692a1e63cff03053fc87cc807fab5e266 /fs/nfs/dns_resolve.h | |
| parent | 96c61cbd0f30496bfa57ed80f7131a57aea3e4de (diff) | |
| download | lwn-e571cbf1a4f8d8b6cfd4898df718dae84c75a8e1.tar.gz lwn-e571cbf1a4f8d8b6cfd4898df718dae84c75a8e1.zip | |
NFS: Add a dns resolver for use with NFSv4 referrals and migration
The NFSv4 and NFSv4.1 protocols both allow for the redirection of a client
from one server to another in order to support filesystem migration and
replication. For full protocol support, we need to add the ability to
convert a DNS host name into an IP address that we can feed to the RPC
client.
We'll reuse the sunrpc cache, now that it has been converted to work with
rpc_pipefs.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/dns_resolve.h')
| -rw-r--r-- | fs/nfs/dns_resolve.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/nfs/dns_resolve.h b/fs/nfs/dns_resolve.h new file mode 100644 index 000000000000..a3f0938babf7 --- /dev/null +++ b/fs/nfs/dns_resolve.h @@ -0,0 +1,14 @@ +/* + * Resolve DNS hostnames into valid ip addresses + */ +#ifndef __LINUX_FS_NFS_DNS_RESOLVE_H +#define __LINUX_FS_NFS_DNS_RESOLVE_H + +#define NFS_DNS_HOSTNAME_MAXLEN (128) + +extern int nfs_dns_resolver_init(void); +extern void nfs_dns_resolver_destroy(void); +extern ssize_t nfs_dns_resolve_name(char *name, size_t namelen, + struct sockaddr *sa, size_t salen); + +#endif |