1/*
2 * linux/inxlude/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	struct kvec		vec[RPCSVC_MAXPAGES];
34	int			vlen;
35};
36
37struct nfsd_writeargs {
38	svc_fh			fh;
39	__u32			offset;
40	int			len;
41	struct kvec		vec[RPCSVC_MAXPAGES];
42	int			vlen;
43};
44
45struct nfsd_createargs {
46	struct svc_fh		fh;
47	char *			name;
48	int			len;
49	struct iattr		attrs;
50};
51
52struct nfsd_renameargs {
53	struct svc_fh		ffh;
54	char *			fname;
55	int			flen;
56	struct svc_fh		tfh;
57	char *			tname;
58	int			tlen;
59};
60
61struct nfsd_readlinkargs {
62	struct svc_fh		fh;
63	char *			buffer;
64};
65
66struct nfsd_linkargs {
67	struct svc_fh		ffh;
68	struct svc_fh		tfh;
69	char *			tname;
70	int			tlen;
71};
72
73struct nfsd_symlinkargs {
74	struct svc_fh		ffh;
75	char *			fname;
76	int			flen;
77	char *			tname;
78	int			tlen;
79	struct iattr		attrs;
80};
81
82struct nfsd_readdirargs {
83	struct svc_fh		fh;
84	__u32			cookie;
85	__u32			count;
86	u32 *			buffer;
87};
88
89struct nfsd_attrstat {
90	struct svc_fh		fh;
91	struct kstat		stat;
92};
93
94struct nfsd_diropres  {
95	struct svc_fh		fh;
96	struct kstat		stat;
97};
98
99struct nfsd_readlinkres {
100	int			len;
101};
102
103struct nfsd_readres {
104	struct svc_fh		fh;
105	unsigned long		count;
106	struct kstat		stat;
107};
108
109struct nfsd_readdirres {
110	int			count;
111
112	struct readdir_cd	common;
113	u32 *			buffer;
114	int			buflen;
115	u32 *			offset;
116};
117
118struct nfsd_statfsres {
119	struct kstatfs		stats;
120};
121
122/*
123 * Storage requirements for XDR arguments and results.
124 */
125union nfsd_xdrstore {
126	struct nfsd_sattrargs	sattr;
127	struct nfsd_diropargs	dirop;
128	struct nfsd_readargs	read;
129	struct nfsd_writeargs	write;
130	struct nfsd_createargs	create;
131	struct nfsd_renameargs	rename;
132	struct nfsd_linkargs	link;
133	struct nfsd_symlinkargs	symlink;
134	struct nfsd_readdirargs	readdir;
135};
136
137#define NFS2_SVC_XDRSIZE	sizeof(union nfsd_xdrstore)
138
139
140int nfssvc_decode_void(struct svc_rqst *, u32 *, void *);
141int nfssvc_decode_fhandle(struct svc_rqst *, u32 *, struct nfsd_fhandle *);
142int nfssvc_decode_sattrargs(struct svc_rqst *, u32 *,
143				struct nfsd_sattrargs *);
144int nfssvc_decode_diropargs(struct svc_rqst *, u32 *,
145				struct nfsd_diropargs *);
146int nfssvc_decode_readargs(struct svc_rqst *, u32 *,
147				struct nfsd_readargs *);
148int nfssvc_decode_writeargs(struct svc_rqst *, u32 *,
149				struct nfsd_writeargs *);
150int nfssvc_decode_createargs(struct svc_rqst *, u32 *,
151				struct nfsd_createargs *);
152int nfssvc_decode_renameargs(struct svc_rqst *, u32 *,
153				struct nfsd_renameargs *);
154int nfssvc_decode_readlinkargs(struct svc_rqst *, u32 *,
155				struct nfsd_readlinkargs *);
156int nfssvc_decode_linkargs(struct svc_rqst *, u32 *,
157				struct nfsd_linkargs *);
158int nfssvc_decode_symlinkargs(struct svc_rqst *, u32 *,
159				struct nfsd_symlinkargs *);
160int nfssvc_decode_readdirargs(struct svc_rqst *, u32 *,
161				struct nfsd_readdirargs *);
162int nfssvc_encode_void(struct svc_rqst *, u32 *, void *);
163int nfssvc_encode_attrstat(struct svc_rqst *, u32 *, struct nfsd_attrstat *);
164int nfssvc_encode_diropres(struct svc_rqst *, u32 *, struct nfsd_diropres *);
165int nfssvc_encode_readlinkres(struct svc_rqst *, u32 *, struct nfsd_readlinkres *);
166int nfssvc_encode_readres(struct svc_rqst *, u32 *, struct nfsd_readres *);
167int nfssvc_encode_statfsres(struct svc_rqst *, u32 *, struct nfsd_statfsres *);
168int nfssvc_encode_readdirres(struct svc_rqst *, u32 *, struct nfsd_readdirres *);
169
170int nfssvc_encode_entry(struct readdir_cd *, const char *name,
171				int namlen, loff_t offset, ino_t ino, unsigned int);
172
173int nfssvc_release_fhandle(struct svc_rqst *, u32 *, struct nfsd_fhandle *);
174
175/* Helper functions for NFSv2 ACL code */
176u32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, u32 *p, struct svc_fh *fhp);
177u32 *nfs2svc_decode_fh(u32 *p, struct svc_fh *fhp);
178
179#endif /* LINUX_NFSD_H */
180