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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
15enum nfs4_callback_procnum {
16 CB_NULL = 0,
17 CB_COMPOUND = 1,
18};
19
20enum nfs4_callback_opnum {
21 OP_CB_GETATTR = 3,
22 OP_CB_RECALL = 4,
23 OP_CB_ILLEGAL = 10044,
24};
25
26struct cb_compound_hdr_arg {
Trond Myklebust2e42c3e2007-05-14 17:20:41 -040027 unsigned int taglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 const char *tag;
29 unsigned int callback_ident;
30 unsigned nops;
31};
32
33struct cb_compound_hdr_res {
Al Viro5704fde2006-10-19 23:28:51 -070034 __be32 *status;
Trond Myklebust2e42c3e2007-05-14 17:20:41 -040035 unsigned int taglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 const char *tag;
Al Viro5704fde2006-10-19 23:28:51 -070037 __be32 *nops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070038};
39
40struct cb_getattrargs {
41 struct sockaddr_in *addr;
42 struct nfs_fh fh;
43 uint32_t bitmap[2];
44};
45
46struct cb_getattrres {
Al Viroe6f684f2006-10-19 23:28:50 -070047 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 uint32_t bitmap[2];
49 uint64_t size;
50 uint64_t change_attr;
51 struct timespec ctime;
52 struct timespec mtime;
53};
54
55struct cb_recallargs {
56 struct sockaddr_in *addr;
57 struct nfs_fh fh;
58 nfs4_stateid stateid;
59 uint32_t truncate;
60};
61
Al Viroe6f684f2006-10-19 23:28:50 -070062extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res);
63extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy);
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
David Howells5ae1fbc2006-08-22 20:06:08 -040065#ifdef CONFIG_NFS_V4
Linus Torvalds1da177e2005-04-16 15:20:36 -070066extern int nfs_callback_up(void);
David Howells5ae1fbc2006-08-22 20:06:08 -040067extern void nfs_callback_down(void);
68#else
69#define nfs_callback_up() (0)
70#define nfs_callback_down() do {} while(0)
71#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
Trond Myklebusta72b4422006-01-03 09:55:41 +010073extern unsigned int nfs_callback_set_tcpport;
Linus Torvalds1da177e2005-04-16 15:20:36 -070074extern unsigned short nfs_callback_tcpport;
75
76#endif /* __LINUX_FS_NFS_CALLBACK_H */