1/*
2 * linux/include/linux/nfsd/xdr.h
3 *
4 * XDR types for nfsd. This is mainly a typing exercise.
5 */
6
7#ifndef LINUX_NFSD_H
8#define LINUX_NFSD_H
9
10#include <linux/fs.h>
11#include <linux/vfs.h>
12#include <linux/nfs.h>
13
14struct nfsd_fhandle {
15	struct svc_fh		fh;
16};
17
18struct nfsd_sattrargs {
19	struct svc_fh		fh;
20	struct iattr		attrs;
21};
22
23struct nfsd_diropargs {
24	struct svc_fh		fh;
25	char *			name;
26	int			len;
27};
28
29struct nfsd_readargs {
30	struct svc_fh		fh;
31	__u32			offset;
32	__u32			count;
33	int			vlen;
34};
35
36struct nfsd_writeargs {
37	svc_fh			fh;
38	__u32			offset;
39	int			len;
40	int			vlen;
41};
42
43struct nfsd_createargs {
44	struct svc_fh		fh;
45	char *			name;
46	int			len;
47	struct iattr		attrs;
48};
49
50struct nfsd_renameargs {
51	struct svc_fh		ffh;
52	char *			fname;
53	int			flen;
54	struct svc_fh		tfh;
55	char *			tname;
56	int			tlen;
57};
58
59struct nfsd_readlinkargs {
60	struct svc_fh		fh;
61	char *			buffer;
62};
63
64struct nfsd_linkargs {
65	struct svc_fh		ffh;
66	struct svc_fh		tfh;
67	char *			tname;
68	int			tlen;
69};
70
71struct nfsd_symlinkargs {
72	struct svc_fh		ffh;
73	char *			fname;
74	int			flen;
75	char *			tname;
76	int			tlen;
77	struct iattr		attrs;
78};
79
80struct nfsd_readdirargs {
81	struct svc_fh		fh;
82	__u32			cookie;
83	__u32			count;
84	__be32 *		buffer;
85};
86
87struct nfsd_attrstat {
88	struct svc_fh		fh;
89	struct kstat		stat;
90};
91
92struct nfsd_diropres  {
93	struct svc_fh		fh;
94	struct kstat		stat;
95};
96
97struct nfsd_readlinkres {
98	int			len;
99};
100
101struct nfsd_readres {
102	struct svc_fh		fh;
103	unsigned long		count;
104	struct kstat		stat;
105};
106
107struct nfsd_readdirres {
108	int			count;
109
110	struct readdir_cd	common;
111	__be32 *		buffer;
112	int			buflen;
113	__be32 *		offset;
114};
115
116struct nfsd_statfsres {
117	struct kstatfs		stats;
118};
119
120/*
121 * Storage requirements for XDR arguments and results.
122 */
123union nfsd_xdrstore {
124	struct nfsd_sattrargs	sattr;
125	struct nfsd_diropargs	dirop;
126	struct nfsd_readargs	read;
127	struct nfsd_writeargs	write;
128	struct nfsd_createargs	create;
129	struct nfsd_renameargs	rename;
130	struct nfsd_linkargs	link;
131	struct nfsd_symlinkargs	symlink;
132	struct nfsd_readdirargs	readdir;
133};
134
135#define NFS2_SVC_XDRSIZE	sizeof(union nfsd_xdrstore)
136
137
138int nfssvc_decode_void(struct svc_rqst *, __be32 *, void *);
139int nfssvc_decode_fhandle(struct svc_rqst *, __be32 *, struct nfsd_fhandle *);
140int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *,
141				struct nfsd_sattrargs *);
142int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *,
143				struct nfsd_diropargs *);
144int nfssvc_decode_readargs(struct svc_rqst *, __be32 *,
145				struct nfsd_readargs *);
146int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *,
147				struct nfsd_writeargs *);
148int nfssvc_decode_createargs(struct svc_rqst *, __be32 *,
149				struct nfsd_createargs *);
150int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *,
151				struct nfsd_renameargs *);
152int nfssvc_decode_readlinkargs(struct svc_rqst *, __be32 *,
153				struct nfsd_readlinkargs *);
154int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *,
155				struct nfsd_linkargs *);
156int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *,
157				struct nfsd_symlinkargs *);
158int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *,
159				struct nfsd_readdirargs *);
160int nfssvc_encode_void(struct svc_rqst *, __be32 *, void *);
161int nfssvc_encode_attrstat(struct svc_rqst *, __be32 *, struct nfsd_attrstat *);
162int nfssvc_encode_diropres(struct svc_rqst *, __be32 *, struct nfsd_diropres *);
163int nfssvc_encode_readlinkres(struct svc_rqst *, __be32 *, struct nfsd_readlinkres *);
164int nfssvc_encode_readres(struct svc_rqst *, __be32 *, struct nfsd_readres *);
165int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *, struct nfsd_statfsres *);
166int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *, struct nfsd_readdirres *);
167
168int nfssvc_encode_entry(void *, const char *name,
169			int namlen, loff_t offset, u64 ino, unsigned int);
170
171int nfssvc_release_fhandle(struct svc_rqst *, __be32 *, struct nfsd_fhandle *);
172
173/* Helper functions for NFSv2 ACL code */
174__be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp);
175__be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp);
176
177#endif /* LINUX_NFSD_H */
178