root/include/linux/nfsd/xdr.h

INCLUDED FROM

/*
 * linux/include/linux/nfsd/xdr.h
 *
 * XDR types for nfsd. This is mainly a typing exercise.
 */

#ifndef LINUX_NFSD_H
#define LINUX_NFSD_H

#include <linux/fs.h>
#include <linux/vfs.h>
#include <linux/nfs.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;
        int                     vlen;
};

struct nfsd_writeargs {
        svc_fh                  fh;
        __u32                   offset;
        int                     len;
        int                     vlen;
};

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_readlinkargs {
        struct svc_fh           fh;
        char *                  buffer;
};
        
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 nfsd_readdirargs {
        struct svc_fh           fh;
        __u32                   cookie;
        __u32                   count;
        __be32 *                buffer;
};

struct nfsd_attrstat {
        struct svc_fh           fh;
        struct kstat            stat;
};

struct nfsd_diropres  {
        struct svc_fh           fh;
        struct kstat            stat;
};

struct nfsd_readlinkres {
        int                     len;
};

struct nfsd_readres {
        struct svc_fh           fh;
        unsigned long           count;
        struct kstat            stat;
};

struct nfsd_readdirres {
        int                     count;

        struct readdir_cd       common;
        __be32 *                buffer;
        int                     buflen;
        __be32 *                offset;
};

struct nfsd_statfsres {
        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)


int nfssvc_decode_void(struct svc_rqst *, __be32 *, void *);
int nfssvc_decode_fhandle(struct svc_rqst *, __be32 *, struct nfsd_fhandle *);
int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *,
                                struct nfsd_sattrargs *);
int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *,
                                struct nfsd_diropargs *);
int nfssvc_decode_readargs(struct svc_rqst *, __be32 *,
                                struct nfsd_readargs *);
int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *,
                                struct nfsd_writeargs *);
int nfssvc_decode_createargs(struct svc_rqst *, __be32 *,
                                struct nfsd_createargs *);
int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *,
                                struct nfsd_renameargs *);
int nfssvc_decode_readlinkargs(struct svc_rqst *, __be32 *,
                                struct nfsd_readlinkargs *);
int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *,
                                struct nfsd_linkargs *);
int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *,
                                struct nfsd_symlinkargs *);
int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *,
                                struct nfsd_readdirargs *);
int nfssvc_encode_void(struct svc_rqst *, __be32 *, void *);
int nfssvc_encode_attrstat(struct svc_rqst *, __be32 *, struct nfsd_attrstat *);
int nfssvc_encode_diropres(struct svc_rqst *, __be32 *, struct nfsd_diropres *);
int nfssvc_encode_readlinkres(struct svc_rqst *, __be32 *, struct nfsd_readlinkres *);
int nfssvc_encode_readres(struct svc_rqst *, __be32 *, struct nfsd_readres *);
int nfssvc_encode_statfsres(struct svc_rqst *, __be32 *, struct nfsd_statfsres *);
int nfssvc_encode_readdirres(struct svc_rqst *, __be32 *, struct nfsd_readdirres *);

int nfssvc_encode_entry(void *, const char *name,
                        int namlen, loff_t offset, u64 ino, unsigned int);

int nfssvc_release_fhandle(struct svc_rqst *, __be32 *, struct nfsd_fhandle *);

/* Helper functions for NFSv2 ACL code */
__be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp);
__be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp);

#endif /* LINUX_NFSD_H */