|  | /* | 
|  | * 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) | 
|  |  | 
|  |  | 
|  | #ifdef CONFIG_NFS_USE_KERNEL_DNS | 
|  | static inline int nfs_dns_resolver_init(void) | 
|  | { | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | static inline void nfs_dns_resolver_destroy(void) | 
|  | {} | 
|  |  | 
|  | static inline int nfs_dns_resolver_cache_init(struct net *net) | 
|  | { | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | static inline void nfs_dns_resolver_cache_destroy(struct net *net) | 
|  | {} | 
|  | #else | 
|  | extern int nfs_dns_resolver_init(void); | 
|  | extern void nfs_dns_resolver_destroy(void); | 
|  | extern int nfs_dns_resolver_cache_init(struct net *net); | 
|  | extern void nfs_dns_resolver_cache_destroy(struct net *net); | 
|  | #endif | 
|  |  | 
|  | extern ssize_t nfs_dns_resolve_name(struct net *net, char *name, | 
|  | size_t namelen,	struct sockaddr *sa, size_t salen); | 
|  |  | 
|  | #endif |