1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Resolve DNS hostnames into valid ip addresses 4 */ 5 #ifndef __LINUX_FS_NFS_DNS_RESOLVE_H 6 #define __LINUX_FS_NFS_DNS_RESOLVE_H 7 8 #define NFS_DNS_HOSTNAME_MAXLEN (128) 9 10 11 #ifdef CONFIG_NFS_USE_KERNEL_DNS 12 static inline int nfs_dns_resolver_init(void) 13 { 14 return 0; 15 } 16 17 static inline void nfs_dns_resolver_destroy(void) 18 {} 19 20 static inline int nfs_dns_resolver_cache_init(struct net *net) 21 { 22 return 0; 23 } 24 25 static inline void nfs_dns_resolver_cache_destroy(struct net *net) 26 {} 27 #else 28 extern int nfs_dns_resolver_init(void); 29 extern void nfs_dns_resolver_destroy(void); 30 extern int nfs_dns_resolver_cache_init(struct net *net); 31 extern void nfs_dns_resolver_cache_destroy(struct net *net); 32 #endif 33 34 extern ssize_t nfs_dns_resolve_name(struct net *net, char *name, 35 size_t namelen, struct sockaddr_storage *sa, size_t salen); 36 37 #endif 38