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xdr.h
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/* SPDX-License-Identifier: GPL-2.0 */
/* XDR types for nfsd. This is mainly a typing exercise. */
#ifndef LINUX_NFSD_H
#define LINUX_NFSD_H
#include <linux/vfs.h>
#include "nfsd.h"
#include "nfsfh.h"
struct nfsd_fhandle {
struct svc_fh fh;
};
struct nfsd_sattrargs {
struct svc_fh fh;
struct iattr attrs;
};
struct nfsd_diropargs {
struct svc_fh fh;
char * name;
unsigned int len;
};
struct nfsd_readargs {
struct svc_fh fh;
__u32 offset;
__u32 count;
};
struct nfsd_writeargs {
svc_fh fh;
__u32 offset;
int len;
struct xdr_buf payload;
};
struct nfsd_createargs {
struct svc_fh fh;
char * name;
unsigned int len;
struct iattr attrs;
};
struct nfsd_renameargs {
struct svc_fh ffh;
char * fname;
unsigned int flen;
struct svc_fh tfh;
char * tname;
unsigned int tlen;
};
struct nfsd_linkargs {
struct svc_fh ffh;
struct svc_fh tfh;
char * tname;
unsigned int tlen;
};
struct nfsd_symlinkargs {
struct svc_fh ffh;
char * fname;
unsigned int flen;
char * tname;
unsigned int tlen;
struct iattr attrs;
struct kvec first;
};
struct nfsd_readdirargs {
struct svc_fh fh;
__u32 cookie;
__u32 count;
};
struct nfsd_stat {
__be32 status;
};
struct nfsd_attrstat {
__be32 status;
struct svc_fh fh;
struct kstat stat;
};
struct nfsd_diropres {
__be32 status;
struct svc_fh fh;
struct kstat stat;
};
struct nfsd_readlinkres {
__be32 status;
int len;
struct page *page;
};
struct nfsd_readres {
__be32 status;
struct svc_fh fh;
unsigned long count;
struct kstat stat;
struct page **pages;
};
struct nfsd_readdirres {
/* Components of the reply */
__be32 status;
int count;
/* Used to encode the reply's entry list */
struct xdr_stream xdr;
struct xdr_buf dirlist;
struct readdir_cd common;
unsigned int cookie_offset;
};
struct nfsd_statfsres {
__be32 status;
struct kstatfs stats;
};
/*
* Storage requirements for XDR arguments and results.
*/
union nfsd_xdrstore {
struct nfsd_sattrargs sattr;
struct nfsd_diropargs dirop;
struct nfsd_readargs read;
struct nfsd_writeargs write;
struct nfsd_createargs create;
struct nfsd_renameargs rename;
struct nfsd_linkargs link;
struct nfsd_symlinkargs symlink;
struct nfsd_readdirargs readdir;
};
#define NFS2_SVC_XDRSIZE sizeof(union nfsd_xdrstore)
bool nfssvc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_encode_statres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_encode_attrstatres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_encode_diropres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_encode_readlinkres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_encode_readres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_encode_statfsres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool nfssvc_encode_readdirres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
void nfssvc_encode_nfscookie(struct nfsd_readdirres *resp, u32 offset);
int nfssvc_encode_entry(void *data, const char *name, int namlen,
loff_t offset, u64 ino, unsigned int d_type);
void nfssvc_release_attrstat(struct svc_rqst *rqstp);
void nfssvc_release_diropres(struct svc_rqst *rqstp);
void nfssvc_release_readres(struct svc_rqst *rqstp);
/* Helper functions for NFSv2 ACL code */
bool svcxdr_decode_fhandle(struct xdr_stream *xdr, struct svc_fh *fhp);
bool svcxdr_encode_stat(struct xdr_stream *xdr, __be32 status);
bool svcxdr_encode_fattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
const struct svc_fh *fhp, const struct kstat *stat);
#endif /* LINUX_NFSD_H */