1 /* 2 * linux/fs/nfs/callback.h 3 * 4 * Copyright (C) 2004 Trond Myklebust 5 * 6 * NFSv4 callback definitions 7 */ 8 #ifndef __LINUX_FS_NFS_CALLBACK_H 9 #define __LINUX_FS_NFS_CALLBACK_H 10 11 #define NFS4_CALLBACK 0x40000000 12 #define NFS4_CALLBACK_XDRSIZE 2048 13 #define NFS4_CALLBACK_BUFSIZE (1024 + NFS4_CALLBACK_XDRSIZE) 14 15 enum nfs4_callback_procnum { 16 CB_NULL = 0, 17 CB_COMPOUND = 1, 18 }; 19 20 enum nfs4_callback_opnum { 21 OP_CB_GETATTR = 3, 22 OP_CB_RECALL = 4, 23 OP_CB_ILLEGAL = 10044, 24 }; 25 26 struct cb_compound_hdr_arg { 27 unsigned int taglen; 28 const char *tag; 29 unsigned int callback_ident; 30 unsigned nops; 31 }; 32 33 struct cb_compound_hdr_res { 34 __be32 *status; 35 unsigned int taglen; 36 const char *tag; 37 __be32 *nops; 38 }; 39 40 struct cb_getattrargs { 41 struct sockaddr_in *addr; 42 struct nfs_fh fh; 43 uint32_t bitmap[2]; 44 }; 45 46 struct cb_getattrres { 47 __be32 status; 48 uint32_t bitmap[2]; 49 uint64_t size; 50 uint64_t change_attr; 51 struct timespec ctime; 52 struct timespec mtime; 53 }; 54 55 struct cb_recallargs { 56 struct sockaddr_in *addr; 57 struct nfs_fh fh; 58 nfs4_stateid stateid; 59 uint32_t truncate; 60 }; 61 62 extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res); 63 extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy); 64 65 #ifdef CONFIG_NFS_V4 66 extern int nfs_callback_up(void); 67 extern void nfs_callback_down(void); 68 #else 69 #define nfs_callback_up() (0) 70 #define nfs_callback_down() do {} while(0) 71 #endif 72 73 extern unsigned int nfs_callback_set_tcpport; 74 extern unsigned short nfs_callback_tcpport; 75 76 #endif /* __LINUX_FS_NFS_CALLBACK_H */ 77