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1/* SPDX-License-Identifier: GPL-2.0 */
2/* XDR types for nfsd. This is mainly a typing exercise. */
3
4#ifndef LINUX_NFSD_H
5#define LINUX_NFSD_H
6
7#include <linux/vfs.h>
8#include "nfsd.h"
9#include "nfsfh.h"
10
11struct nfsd_fhandle {
12 struct svc_fh fh;
13};
14
15struct nfsd_sattrargs {
16 struct svc_fh fh;
17 struct iattr attrs;
18};
19
20struct nfsd_diropargs {
21 struct svc_fh fh;
22 char * name;
23 unsigned int len;
24};
25
26struct nfsd_readargs {
27 struct svc_fh fh;
28 __u32 offset;
29 __u32 count;
30};
31
32struct nfsd_writeargs {
33 svc_fh fh;
34 __u32 offset;
35 int len;
36 struct kvec first;
37};
38
39struct nfsd_createargs {
40 struct svc_fh fh;
41 char * name;
42 unsigned int len;
43 struct iattr attrs;
44};
45
46struct nfsd_renameargs {
47 struct svc_fh ffh;
48 char * fname;
49 unsigned int flen;
50 struct svc_fh tfh;
51 char * tname;
52 unsigned int tlen;
53};
54
55struct nfsd_linkargs {
56 struct svc_fh ffh;
57 struct svc_fh tfh;
58 char * tname;
59 unsigned int tlen;
60};
61
62struct nfsd_symlinkargs {
63 struct svc_fh ffh;
64 char * fname;
65 unsigned int flen;
66 char * tname;
67 unsigned int tlen;
68 struct iattr attrs;
69 struct kvec first;
70};
71
72struct nfsd_readdirargs {
73 struct svc_fh fh;
74 __u32 cookie;
75 __u32 count;
76};
77
78struct nfsd_stat {
79 __be32 status;
80};
81
82struct nfsd_attrstat {
83 __be32 status;
84 struct svc_fh fh;
85 struct kstat stat;
86};
87
88struct nfsd_diropres {
89 __be32 status;
90 struct svc_fh fh;
91 struct kstat stat;
92};
93
94struct nfsd_readlinkres {
95 __be32 status;
96 int len;
97 struct page *page;
98};
99
100struct nfsd_readres {
101 __be32 status;
102 struct svc_fh fh;
103 unsigned long count;
104 struct kstat stat;
105 struct page **pages;
106};
107
108struct nfsd_readdirres {
109 /* Components of the reply */
110 __be32 status;
111
112 int count;
113
114 /* Used to encode the reply's entry list */
115 struct xdr_stream xdr;
116 struct xdr_buf dirlist;
117 struct readdir_cd common;
118 unsigned int cookie_offset;
119};
120
121struct nfsd_statfsres {
122 __be32 status;
123 struct kstatfs stats;
124};
125
126/*
127 * Storage requirements for XDR arguments and results.
128 */
129union nfsd_xdrstore {
130 struct nfsd_sattrargs sattr;
131 struct nfsd_diropargs dirop;
132 struct nfsd_readargs read;
133 struct nfsd_writeargs write;
134 struct nfsd_createargs create;
135 struct nfsd_renameargs rename;
136 struct nfsd_linkargs link;
137 struct nfsd_symlinkargs symlink;
138 struct nfsd_readdirargs readdir;
139};
140
141#define NFS2_SVC_XDRSIZE sizeof(union nfsd_xdrstore)
142
143
144int nfssvc_decode_fhandleargs(struct svc_rqst *, __be32 *);
145int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *);
146int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *);
147int nfssvc_decode_readargs(struct svc_rqst *, __be32 *);
148int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *);
149int nfssvc_decode_createargs(struct svc_rqst *, __be32 *);
150int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *);
151int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *);
152int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *);
153int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *);
154int nfssvc_encode_statres(struct svc_rqst *, __be32 *);
155int nfssvc_encode_attrstatres(struct svc_rqst *, __be32 *);
156int nfssvc_encode_diropres(struct svc_rqst *, __be32 *);
157int nfssvc_encode_readlinkres(struct svc_rqst *, __be32 *);
158int nfssvc_encode_readres(struct svc_rqst *, __be32 *);
159int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *);
160int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *);
161
162void nfssvc_encode_nfscookie(struct nfsd_readdirres *resp, u32 offset);
163int nfssvc_encode_entry(void *data, const char *name, int namlen,
164 loff_t offset, u64 ino, unsigned int d_type);
165
166void nfssvc_release_attrstat(struct svc_rqst *rqstp);
167void nfssvc_release_diropres(struct svc_rqst *rqstp);
168void nfssvc_release_readres(struct svc_rqst *rqstp);
169
170/* Helper functions for NFSv2 ACL code */
171bool svcxdr_decode_fhandle(struct xdr_stream *xdr, struct svc_fh *fhp);
172bool svcxdr_encode_stat(struct xdr_stream *xdr, __be32 status);
173bool svcxdr_encode_fattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
174 const struct svc_fh *fhp, const struct kstat *stat);
175
176#endif /* LINUX_NFSD_H */