fs/nfsd/xdr.h

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