diff options
Diffstat (limited to 'fs/lockd/clntlock.c')
| -rw-r--r-- | fs/lockd/clntlock.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c index d070b18e539d..0b45fd3a4bfd 100644 --- a/fs/lockd/clntlock.c +++ b/fs/lockd/clntlock.c @@ -41,6 +41,48 @@ struct nlm_wait { static LIST_HEAD(nlm_blocked); +/** + * nlmclnt_init - Set up per-NFS mount point lockd data structures + * @nlm_init: pointer to arguments structure + * + * Returns pointer to an appropriate nlm_host struct, + * or an ERR_PTR value. + */ +struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init) +{ + struct nlm_host *host; + u32 nlm_version = (nlm_init->nfs_version == 2) ? 1 : 4; + int status; + + status = lockd_up(nlm_init->protocol); + if (status < 0) + return ERR_PTR(status); + + host = nlmclnt_lookup_host((struct sockaddr_in *)nlm_init->address, + nlm_init->protocol, nlm_version, + nlm_init->hostname, + strlen(nlm_init->hostname)); + if (host == NULL) { + lockd_down(); + return ERR_PTR(-ENOLCK); + } + + return host; +} +EXPORT_SYMBOL_GPL(nlmclnt_init); + +/** + * nlmclnt_done - Release resources allocated by nlmclnt_init() + * @host: nlm_host structure reserved by nlmclnt_init() + * + */ +void nlmclnt_done(struct nlm_host *host) +{ + nlm_release_host(host); + lockd_down(); +} +EXPORT_SYMBOL_GPL(nlmclnt_done); + /* * Queue up a lock for blocking so that the GRANTED request can see it */ |