1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * XDR types for NFSv3 in nfsd.
4  *
5  * Copyright (C) 1996-1998, Olaf Kirch <okir@monad.swb.de>
6  */
7 
8 #ifndef _LINUX_NFSD_XDR3_H
9 #define _LINUX_NFSD_XDR3_H
10 
11 #include "xdr.h"
12 
13 struct nfsd3_sattrargs {
14 	struct svc_fh		fh;
15 	struct iattr		attrs;
16 	int			check_guard;
17 	time_t			guardtime;
18 };
19 
20 struct nfsd3_diropargs {
21 	struct svc_fh		fh;
22 	char *			name;
23 	unsigned int		len;
24 };
25 
26 struct nfsd3_accessargs {
27 	struct svc_fh		fh;
28 	unsigned int		access;
29 };
30 
31 struct nfsd3_readargs {
32 	struct svc_fh		fh;
33 	__u64			offset;
34 	__u32			count;
35 	int			vlen;
36 };
37 
38 struct nfsd3_writeargs {
39 	svc_fh			fh;
40 	__u64			offset;
41 	__u32			count;
42 	int			stable;
43 	__u32			len;
44 	struct kvec		first;
45 };
46 
47 struct nfsd3_createargs {
48 	struct svc_fh		fh;
49 	char *			name;
50 	unsigned int		len;
51 	int			createmode;
52 	struct iattr		attrs;
53 	__be32 *		verf;
54 };
55 
56 struct nfsd3_mknodargs {
57 	struct svc_fh		fh;
58 	char *			name;
59 	unsigned int		len;
60 	__u32			ftype;
61 	__u32			major, minor;
62 	struct iattr		attrs;
63 };
64 
65 struct nfsd3_renameargs {
66 	struct svc_fh		ffh;
67 	char *			fname;
68 	unsigned int		flen;
69 	struct svc_fh		tfh;
70 	char *			tname;
71 	unsigned int		tlen;
72 };
73 
74 struct nfsd3_readlinkargs {
75 	struct svc_fh		fh;
76 	char *			buffer;
77 };
78 
79 struct nfsd3_linkargs {
80 	struct svc_fh		ffh;
81 	struct svc_fh		tfh;
82 	char *			tname;
83 	unsigned int		tlen;
84 };
85 
86 struct nfsd3_symlinkargs {
87 	struct svc_fh		ffh;
88 	char *			fname;
89 	unsigned int		flen;
90 	char *			tname;
91 	unsigned int		tlen;
92 	struct iattr		attrs;
93 	struct kvec		first;
94 };
95 
96 struct nfsd3_readdirargs {
97 	struct svc_fh		fh;
98 	__u64			cookie;
99 	__u32			dircount;
100 	__u32			count;
101 	__be32 *		verf;
102 	__be32 *		buffer;
103 };
104 
105 struct nfsd3_commitargs {
106 	struct svc_fh		fh;
107 	__u64			offset;
108 	__u32			count;
109 };
110 
111 struct nfsd3_getaclargs {
112 	struct svc_fh		fh;
113 	int			mask;
114 };
115 
116 struct posix_acl;
117 struct nfsd3_setaclargs {
118 	struct svc_fh		fh;
119 	int			mask;
120 	struct posix_acl	*acl_access;
121 	struct posix_acl	*acl_default;
122 };
123 
124 struct nfsd3_attrstat {
125 	__be32			status;
126 	struct svc_fh		fh;
127 	struct kstat            stat;
128 };
129 
130 /* LOOKUP, CREATE, MKDIR, SYMLINK, MKNOD */
131 struct nfsd3_diropres  {
132 	__be32			status;
133 	struct svc_fh		dirfh;
134 	struct svc_fh		fh;
135 };
136 
137 struct nfsd3_accessres {
138 	__be32			status;
139 	struct svc_fh		fh;
140 	__u32			access;
141 	struct kstat		stat;
142 };
143 
144 struct nfsd3_readlinkres {
145 	__be32			status;
146 	struct svc_fh		fh;
147 	__u32			len;
148 };
149 
150 struct nfsd3_readres {
151 	__be32			status;
152 	struct svc_fh		fh;
153 	unsigned long		count;
154 	int			eof;
155 };
156 
157 struct nfsd3_writeres {
158 	__be32			status;
159 	struct svc_fh		fh;
160 	unsigned long		count;
161 	int			committed;
162 };
163 
164 struct nfsd3_renameres {
165 	__be32			status;
166 	struct svc_fh		ffh;
167 	struct svc_fh		tfh;
168 };
169 
170 struct nfsd3_linkres {
171 	__be32			status;
172 	struct svc_fh		tfh;
173 	struct svc_fh		fh;
174 };
175 
176 struct nfsd3_readdirres {
177 	__be32			status;
178 	struct svc_fh		fh;
179 	/* Just to save kmalloc on every readdirplus entry (svc_fh is a
180 	 * little large for the stack): */
181 	struct svc_fh		scratch;
182 	int			count;
183 	__be32			verf[2];
184 
185 	struct readdir_cd	common;
186 	__be32 *		buffer;
187 	int			buflen;
188 	__be32 *		offset;
189 	__be32 *		offset1;
190 	struct svc_rqst *	rqstp;
191 
192 };
193 
194 struct nfsd3_fsstatres {
195 	__be32			status;
196 	struct kstatfs		stats;
197 	__u32			invarsec;
198 };
199 
200 struct nfsd3_fsinfores {
201 	__be32			status;
202 	__u32			f_rtmax;
203 	__u32			f_rtpref;
204 	__u32			f_rtmult;
205 	__u32			f_wtmax;
206 	__u32			f_wtpref;
207 	__u32			f_wtmult;
208 	__u32			f_dtpref;
209 	__u64			f_maxfilesize;
210 	__u32			f_properties;
211 };
212 
213 struct nfsd3_pathconfres {
214 	__be32			status;
215 	__u32			p_link_max;
216 	__u32			p_name_max;
217 	__u32			p_no_trunc;
218 	__u32			p_chown_restricted;
219 	__u32			p_case_insensitive;
220 	__u32			p_case_preserving;
221 };
222 
223 struct nfsd3_commitres {
224 	__be32			status;
225 	struct svc_fh		fh;
226 };
227 
228 struct nfsd3_getaclres {
229 	__be32			status;
230 	struct svc_fh		fh;
231 	int			mask;
232 	struct posix_acl	*acl_access;
233 	struct posix_acl	*acl_default;
234 	struct kstat		stat;
235 };
236 
237 /* dummy type for release */
238 struct nfsd3_fhandle_pair {
239 	__u32			dummy;
240 	struct svc_fh		fh1;
241 	struct svc_fh		fh2;
242 };
243 
244 /*
245  * Storage requirements for XDR arguments and results.
246  */
247 union nfsd3_xdrstore {
248 	struct nfsd3_sattrargs		sattrargs;
249 	struct nfsd3_diropargs		diropargs;
250 	struct nfsd3_readargs		readargs;
251 	struct nfsd3_writeargs		writeargs;
252 	struct nfsd3_createargs		createargs;
253 	struct nfsd3_renameargs		renameargs;
254 	struct nfsd3_linkargs		linkargs;
255 	struct nfsd3_symlinkargs	symlinkargs;
256 	struct nfsd3_readdirargs	readdirargs;
257 	struct nfsd3_diropres 		diropres;
258 	struct nfsd3_accessres		accessres;
259 	struct nfsd3_readlinkres	readlinkres;
260 	struct nfsd3_readres		readres;
261 	struct nfsd3_writeres		writeres;
262 	struct nfsd3_renameres		renameres;
263 	struct nfsd3_linkres		linkres;
264 	struct nfsd3_readdirres		readdirres;
265 	struct nfsd3_fsstatres		fsstatres;
266 	struct nfsd3_fsinfores		fsinfores;
267 	struct nfsd3_pathconfres	pathconfres;
268 	struct nfsd3_commitres		commitres;
269 	struct nfsd3_getaclres		getaclres;
270 };
271 
272 #define NFS3_SVC_XDRSIZE		sizeof(union nfsd3_xdrstore)
273 
274 int nfs3svc_decode_fhandle(struct svc_rqst *, __be32 *);
275 int nfs3svc_decode_sattrargs(struct svc_rqst *, __be32 *);
276 int nfs3svc_decode_diropargs(struct svc_rqst *, __be32 *);
277 int nfs3svc_decode_accessargs(struct svc_rqst *, __be32 *);
278 int nfs3svc_decode_readargs(struct svc_rqst *, __be32 *);
279 int nfs3svc_decode_writeargs(struct svc_rqst *, __be32 *);
280 int nfs3svc_decode_createargs(struct svc_rqst *, __be32 *);
281 int nfs3svc_decode_mkdirargs(struct svc_rqst *, __be32 *);
282 int nfs3svc_decode_mknodargs(struct svc_rqst *, __be32 *);
283 int nfs3svc_decode_renameargs(struct svc_rqst *, __be32 *);
284 int nfs3svc_decode_readlinkargs(struct svc_rqst *, __be32 *);
285 int nfs3svc_decode_linkargs(struct svc_rqst *, __be32 *);
286 int nfs3svc_decode_symlinkargs(struct svc_rqst *, __be32 *);
287 int nfs3svc_decode_readdirargs(struct svc_rqst *, __be32 *);
288 int nfs3svc_decode_readdirplusargs(struct svc_rqst *, __be32 *);
289 int nfs3svc_decode_commitargs(struct svc_rqst *, __be32 *);
290 int nfs3svc_encode_voidres(struct svc_rqst *, __be32 *);
291 int nfs3svc_encode_attrstat(struct svc_rqst *, __be32 *);
292 int nfs3svc_encode_wccstat(struct svc_rqst *, __be32 *);
293 int nfs3svc_encode_diropres(struct svc_rqst *, __be32 *);
294 int nfs3svc_encode_accessres(struct svc_rqst *, __be32 *);
295 int nfs3svc_encode_readlinkres(struct svc_rqst *, __be32 *);
296 int nfs3svc_encode_readres(struct svc_rqst *, __be32 *);
297 int nfs3svc_encode_writeres(struct svc_rqst *, __be32 *);
298 int nfs3svc_encode_createres(struct svc_rqst *, __be32 *);
299 int nfs3svc_encode_renameres(struct svc_rqst *, __be32 *);
300 int nfs3svc_encode_linkres(struct svc_rqst *, __be32 *);
301 int nfs3svc_encode_readdirres(struct svc_rqst *, __be32 *);
302 int nfs3svc_encode_fsstatres(struct svc_rqst *, __be32 *);
303 int nfs3svc_encode_fsinfores(struct svc_rqst *, __be32 *);
304 int nfs3svc_encode_pathconfres(struct svc_rqst *, __be32 *);
305 int nfs3svc_encode_commitres(struct svc_rqst *, __be32 *);
306 
307 void nfs3svc_release_fhandle(struct svc_rqst *);
308 void nfs3svc_release_fhandle2(struct svc_rqst *);
309 int nfs3svc_encode_entry(void *, const char *name,
310 				int namlen, loff_t offset, u64 ino,
311 				unsigned int);
312 int nfs3svc_encode_entry_plus(void *, const char *name,
313 				int namlen, loff_t offset, u64 ino,
314 				unsigned int);
315 /* Helper functions for NFSv3 ACL code */
316 __be32 *nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p,
317 				struct svc_fh *fhp);
318 __be32 *nfs3svc_decode_fh(__be32 *p, struct svc_fh *fhp);
319 
320 
321 #endif /* _LINUX_NFSD_XDR3_H */
322