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         int                     vlen;
  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 };
  76
  77 struct nfsd_readdirargs {
  78         struct svc_fh           fh;
  79         __u32                   cookie;
  80         __u32                   count;
  81         __be32 *                buffer;
  82 };
  83
  84 struct nfsd_attrstat {
  85         struct svc_fh           fh;
  86         struct kstat            stat;
  87 };
  88
  89 struct nfsd_diropres  {
  90         struct svc_fh           fh;
  91         struct kstat            stat;
  92 };
  93
  94 struct nfsd_readlinkres {
  95         int                     len;
  96 };
  97
  98 struct nfsd_readres {
  99         struct svc_fh           fh;
 100         unsigned long           count;
 101         struct kstat            stat;
 102 };
 103
 104 struct nfsd_readdirres {
 105         int                     count;
 106
 107         struct readdir_cd       common;
 108         __be32 *                buffer;
 109         int                     buflen;
 110         __be32 *                offset;
 111 };
 112
 113 struct nfsd_statfsres {
 114         struct kstatfs          stats;
 115 };
 116
 117 /*
 118  * Storage requirements for XDR arguments and results.
 119  */
 120 union nfsd_xdrstore {
 121         struct nfsd_sattrargs   sattr;
 122         struct nfsd_diropargs   dirop;
 123         struct nfsd_readargs    read;
 124         struct nfsd_writeargs   write;
 125         struct nfsd_createargs  create;
 126         struct nfsd_renameargs  rename;
 127         struct nfsd_linkargs    link;
 128         struct nfsd_symlinkargs symlink;
 129         struct nfsd_readdirargs readdir;
 130 };
 131
 132 #define NFS2_SVC_XDRSIZE        sizeof(union nfsd_xdrstore)
 133
 134
 135 int nfssvc_decode_void(struct svc_rqst *, __be32 *);
 136 int nfssvc_decode_fhandle(struct svc_rqst *, __be32 *);
 137 int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *);
 138 int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *);
 139 int nfssvc_decode_readargs(struct svc_rqst *, __be32 *);
 140 int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *);
 141 int nfssvc_decode_createargs(struct svc_rqst *, __be32 *);
 142 int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *);
 143 int nfssvc_decode_readlinkargs(struct svc_rqst *, __be32 *);
 144 int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *);
 145 int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *);
 146 int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *);
 147 int nfssvc_encode_void(struct svc_rqst *, __be32 *);
 148 int nfssvc_encode_attrstat(struct svc_rqst *, __be32 *);
 149 int nfssvc_encode_diropres(struct svc_rqst *, __be32 *);
 150 int nfssvc_encode_readlinkres(struct svc_rqst *, __be32 *);
 151 int nfssvc_encode_readres(struct svc_rqst *, __be32 *);
 152 int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *);
 153 int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *);
 154
 155 int nfssvc_encode_entry(void *, const char *name,
 156                         int namlen, loff_t offset, u64 ino, unsigned int);
 157
 158 void nfssvc_release_fhandle(struct svc_rqst *);
 159
 160 /* Helper functions for NFSv2 ACL code */
 161 __be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, struct kstat *stat);
 162 __be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp);
 163
 164 #endif /* LINUX_NFSD_H */