1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Resolve DNS hostnames into valid ip addresses 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun #ifndef __LINUX_FS_NFS_DNS_RESOLVE_H 6*4882a593Smuzhiyun #define __LINUX_FS_NFS_DNS_RESOLVE_H 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #define NFS_DNS_HOSTNAME_MAXLEN (128) 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #ifdef CONFIG_NFS_USE_KERNEL_DNS nfs_dns_resolver_init(void)12*4882a593Smuzhiyunstatic inline int nfs_dns_resolver_init(void) 13*4882a593Smuzhiyun { 14*4882a593Smuzhiyun return 0; 15*4882a593Smuzhiyun } 16*4882a593Smuzhiyun nfs_dns_resolver_destroy(void)17*4882a593Smuzhiyunstatic inline void nfs_dns_resolver_destroy(void) 18*4882a593Smuzhiyun {} 19*4882a593Smuzhiyun nfs_dns_resolver_cache_init(struct net * net)20*4882a593Smuzhiyunstatic inline int nfs_dns_resolver_cache_init(struct net *net) 21*4882a593Smuzhiyun { 22*4882a593Smuzhiyun return 0; 23*4882a593Smuzhiyun } 24*4882a593Smuzhiyun nfs_dns_resolver_cache_destroy(struct net * net)25*4882a593Smuzhiyunstatic inline void nfs_dns_resolver_cache_destroy(struct net *net) 26*4882a593Smuzhiyun {} 27*4882a593Smuzhiyun #else 28*4882a593Smuzhiyun extern int nfs_dns_resolver_init(void); 29*4882a593Smuzhiyun extern void nfs_dns_resolver_destroy(void); 30*4882a593Smuzhiyun extern int nfs_dns_resolver_cache_init(struct net *net); 31*4882a593Smuzhiyun extern void nfs_dns_resolver_cache_destroy(struct net *net); 32*4882a593Smuzhiyun #endif 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun extern ssize_t nfs_dns_resolve_name(struct net *net, char *name, 35*4882a593Smuzhiyun size_t namelen, struct sockaddr *sa, size_t salen); 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun #endif 38