fs/nfs/dns_resolve.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Resolve DNS hostnames into valid ip addresses
0004  */
0005 #ifndef __LINUX_FS_NFS_DNS_RESOLVE_H
0006 #define __LINUX_FS_NFS_DNS_RESOLVE_H
0007
0008 #define NFS_DNS_HOSTNAME_MAXLEN (128)
0009
0010
0011 #ifdef CONFIG_NFS_USE_KERNEL_DNS
0012 static inline int nfs_dns_resolver_init(void)
0013 {
0014     return 0;
0015 }
0016
0017 static inline void nfs_dns_resolver_destroy(void)
0018 {}
0019
0020 static inline int nfs_dns_resolver_cache_init(struct net *net)
0021 {
0022     return 0;
0023 }
0024
0025 static inline void nfs_dns_resolver_cache_destroy(struct net *net)
0026 {}
0027 #else
0028 extern int nfs_dns_resolver_init(void);
0029 extern void nfs_dns_resolver_destroy(void);
0030 extern int nfs_dns_resolver_cache_init(struct net *net);
0031 extern void nfs_dns_resolver_cache_destroy(struct net *net);
0032 #endif
0033
0034 extern ssize_t nfs_dns_resolve_name(struct net *net, char *name,
0035         size_t namelen, struct sockaddr *sa, size_t salen);
0036
0037 #endif