fs/nfsd/xdr3.h

   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         struct timespec64       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         __u32                   access;
  29 };
  30
  31 struct nfsd3_readargs {
  32         struct svc_fh           fh;
  33         __u64                   offset;
  34         __u32                   count;
  35 };
  36
  37 struct nfsd3_writeargs {
  38         svc_fh                  fh;
  39         __u64                   offset;
  40         __u32                   count;
  41         int                     stable;
  42         __u32                   len;
  43         struct xdr_buf          payload;
  44 };
  45
  46 struct nfsd3_createargs {
  47         struct svc_fh           fh;
  48         char *                  name;
  49         unsigned int            len;
  50         int                     createmode;
  51         struct iattr            attrs;
  52         __be32 *                verf;
  53 };
  54
  55 struct nfsd3_mknodargs {
  56         struct svc_fh           fh;
  57         char *                  name;
  58         unsigned int            len;
  59         __u32                   ftype;
  60         __u32                   major, minor;
  61         struct iattr            attrs;
  62 };
  63
  64 struct nfsd3_renameargs {
  65         struct svc_fh           ffh;
  66         char *                  fname;
  67         unsigned int            flen;
  68         struct svc_fh           tfh;
  69         char *                  tname;
  70         unsigned int            tlen;
  71 };
  72
  73 struct nfsd3_linkargs {
  74         struct svc_fh           ffh;
  75         struct svc_fh           tfh;
  76         char *                  tname;
  77         unsigned int            tlen;
  78 };
  79
  80 struct nfsd3_symlinkargs {
  81         struct svc_fh           ffh;
  82         char *                  fname;
  83         unsigned int            flen;
  84         char *                  tname;
  85         unsigned int            tlen;
  86         struct iattr            attrs;
  87         struct kvec             first;
  88 };
  89
  90 struct nfsd3_readdirargs {
  91         struct svc_fh           fh;
  92         __u64                   cookie;
  93         __u32                   count;
  94         __be32 *                verf;
  95 };
  96
  97 struct nfsd3_commitargs {
  98         struct svc_fh           fh;
  99         __u64                   offset;
 100         __u32                   count;
 101 };
 102
 103 struct nfsd3_getaclargs {
 104         struct svc_fh           fh;
 105         __u32                   mask;
 106 };
 107
 108 struct posix_acl;
 109 struct nfsd3_setaclargs {
 110         struct svc_fh           fh;
 111         __u32                   mask;
 112         struct posix_acl        *acl_access;
 113         struct posix_acl        *acl_default;
 114 };
 115
 116 struct nfsd3_attrstat {
 117         __be32                  status;
 118         struct svc_fh           fh;
 119         struct kstat            stat;
 120 };
 121
 122 /* LOOKUP, CREATE, MKDIR, SYMLINK, MKNOD */
 123 struct nfsd3_diropres  {
 124         __be32                  status;
 125         struct svc_fh           dirfh;
 126         struct svc_fh           fh;
 127 };
 128
 129 struct nfsd3_accessres {
 130         __be32                  status;
 131         struct svc_fh           fh;
 132         __u32                   access;
 133         struct kstat            stat;
 134 };
 135
 136 struct nfsd3_readlinkres {
 137         __be32                  status;
 138         struct svc_fh           fh;
 139         __u32                   len;
 140         struct page             **pages;
 141 };
 142
 143 struct nfsd3_readres {
 144         __be32                  status;
 145         struct svc_fh           fh;
 146         unsigned long           count;
 147         __u32                   eof;
 148         struct page             **pages;
 149 };
 150
 151 struct nfsd3_writeres {
 152         __be32                  status;
 153         struct svc_fh           fh;
 154         unsigned long           count;
 155         int                     committed;
 156         __be32                  verf[2];
 157 };
 158
 159 struct nfsd3_renameres {
 160         __be32                  status;
 161         struct svc_fh           ffh;
 162         struct svc_fh           tfh;
 163 };
 164
 165 struct nfsd3_linkres {
 166         __be32                  status;
 167         struct svc_fh           tfh;
 168         struct svc_fh           fh;
 169 };
 170
 171 struct nfsd3_readdirres {
 172         /* Components of the reply */
 173         __be32                  status;
 174         struct svc_fh           fh;
 175         __be32                  verf[2];
 176
 177         /* Used to encode the reply's entry list */
 178         struct xdr_stream       xdr;
 179         struct xdr_buf          dirlist;
 180         struct svc_fh           scratch;
 181         struct readdir_cd       common;
 182         unsigned int            cookie_offset;
 183         struct svc_rqst *       rqstp;
 184
 185 };
 186
 187 struct nfsd3_fsstatres {
 188         __be32                  status;
 189         struct kstatfs          stats;
 190         __u32                   invarsec;
 191 };
 192
 193 struct nfsd3_fsinfores {
 194         __be32                  status;
 195         __u32                   f_rtmax;
 196         __u32                   f_rtpref;
 197         __u32                   f_rtmult;
 198         __u32                   f_wtmax;
 199         __u32                   f_wtpref;
 200         __u32                   f_wtmult;
 201         __u32                   f_dtpref;
 202         __u64                   f_maxfilesize;
 203         __u32                   f_properties;
 204 };
 205
 206 struct nfsd3_pathconfres {
 207         __be32                  status;
 208         __u32                   p_link_max;
 209         __u32                   p_name_max;
 210         __u32                   p_no_trunc;
 211         __u32                   p_chown_restricted;
 212         __u32                   p_case_insensitive;
 213         __u32                   p_case_preserving;
 214 };
 215
 216 struct nfsd3_commitres {
 217         __be32                  status;
 218         struct svc_fh           fh;
 219         __be32                  verf[2];
 220 };
 221
 222 struct nfsd3_getaclres {
 223         __be32                  status;
 224         struct svc_fh           fh;
 225         int                     mask;
 226         struct posix_acl        *acl_access;
 227         struct posix_acl        *acl_default;
 228         struct kstat            stat;
 229 };
 230
 231 /* dummy type for release */
 232 struct nfsd3_fhandle_pair {
 233         __u32                   dummy;
 234         struct svc_fh           fh1;
 235         struct svc_fh           fh2;
 236 };
 237
 238 /*
 239  * Storage requirements for XDR arguments and results.
 240  */
 241 union nfsd3_xdrstore {
 242         struct nfsd3_sattrargs          sattrargs;
 243         struct nfsd3_diropargs          diropargs;
 244         struct nfsd3_readargs           readargs;
 245         struct nfsd3_writeargs          writeargs;
 246         struct nfsd3_createargs         createargs;
 247         struct nfsd3_renameargs         renameargs;
 248         struct nfsd3_linkargs           linkargs;
 249         struct nfsd3_symlinkargs        symlinkargs;
 250         struct nfsd3_readdirargs        readdirargs;
 251         struct nfsd3_diropres           diropres;
 252         struct nfsd3_accessres          accessres;
 253         struct nfsd3_readlinkres        readlinkres;
 254         struct nfsd3_readres            readres;
 255         struct nfsd3_writeres           writeres;
 256         struct nfsd3_renameres          renameres;
 257         struct nfsd3_linkres            linkres;
 258         struct nfsd3_readdirres         readdirres;
 259         struct nfsd3_fsstatres          fsstatres;
 260         struct nfsd3_fsinfores          fsinfores;
 261         struct nfsd3_pathconfres        pathconfres;
 262         struct nfsd3_commitres          commitres;
 263         struct nfsd3_getaclres          getaclres;
 264 };
 265
 266 #define NFS3_SVC_XDRSIZE                sizeof(union nfsd3_xdrstore)
 267
 268 bool nfs3svc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 269 bool nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 270 bool nfs3svc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 271 bool nfs3svc_decode_accessargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 272 bool nfs3svc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 273 bool nfs3svc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 274 bool nfs3svc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 275 bool nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 276 bool nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 277 bool nfs3svc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 278 bool nfs3svc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 279 bool nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 280 bool nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 281 bool nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 282 bool nfs3svc_decode_commitargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 283
 284 bool nfs3svc_encode_getattrres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 285 bool nfs3svc_encode_wccstat(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 286 bool nfs3svc_encode_lookupres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 287 bool nfs3svc_encode_accessres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 288 bool nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 289 bool nfs3svc_encode_readres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 290 bool nfs3svc_encode_writeres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 291 bool nfs3svc_encode_createres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 292 bool nfs3svc_encode_renameres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 293 bool nfs3svc_encode_linkres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 294 bool nfs3svc_encode_readdirres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 295 bool nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 296 bool nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 297 bool nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 298 bool nfs3svc_encode_commitres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 299
 300 void nfs3svc_release_fhandle(struct svc_rqst *);
 301 void nfs3svc_release_fhandle2(struct svc_rqst *);
 302
 303 void nfs3svc_encode_cookie3(struct nfsd3_readdirres *resp, u64 offset);
 304 int nfs3svc_encode_entry3(void *data, const char *name, int namlen,
 305                           loff_t offset, u64 ino, unsigned int d_type);
 306 int nfs3svc_encode_entryplus3(void *data, const char *name, int namlen,
 307                               loff_t offset, u64 ino, unsigned int d_type);
 308 /* Helper functions for NFSv3 ACL code */
 309 bool svcxdr_decode_nfs_fh3(struct xdr_stream *xdr, struct svc_fh *fhp);
 310 bool svcxdr_encode_nfsstat3(struct xdr_stream *xdr, __be32 status);
 311 bool svcxdr_encode_post_op_attr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
 312                                 const struct svc_fh *fhp);
 313
 314 #endif /* _LINUX_NFSD_XDR3_H */