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130e2054d4
Returning an undecorated integer is an age-old trope, but it's not clear (even to previous experts in this code) that the only valid return values are 1 and 0. These functions do not return a negative errno, rpc_stat value, or a positive length. Document there are only two valid return values by having .pc_encode return only true or false. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
315 lines
7.8 KiB
C
315 lines
7.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* XDR types for NFSv3 in nfsd.
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*
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* Copyright (C) 1996-1998, Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef _LINUX_NFSD_XDR3_H
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#define _LINUX_NFSD_XDR3_H
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#include "xdr.h"
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struct nfsd3_sattrargs {
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struct svc_fh fh;
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struct iattr attrs;
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int check_guard;
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time64_t guardtime;
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};
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struct nfsd3_diropargs {
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struct svc_fh fh;
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char * name;
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unsigned int len;
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};
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struct nfsd3_accessargs {
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struct svc_fh fh;
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__u32 access;
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};
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struct nfsd3_readargs {
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struct svc_fh fh;
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__u64 offset;
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__u32 count;
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};
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struct nfsd3_writeargs {
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svc_fh fh;
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__u64 offset;
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__u32 count;
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int stable;
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__u32 len;
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struct xdr_buf payload;
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};
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struct nfsd3_createargs {
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struct svc_fh fh;
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char * name;
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unsigned int len;
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int createmode;
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struct iattr attrs;
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__be32 * verf;
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};
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struct nfsd3_mknodargs {
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struct svc_fh fh;
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char * name;
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unsigned int len;
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__u32 ftype;
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__u32 major, minor;
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struct iattr attrs;
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};
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struct nfsd3_renameargs {
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struct svc_fh ffh;
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char * fname;
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unsigned int flen;
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struct svc_fh tfh;
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char * tname;
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unsigned int tlen;
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};
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struct nfsd3_linkargs {
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struct svc_fh ffh;
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struct svc_fh tfh;
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char * tname;
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unsigned int tlen;
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};
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struct nfsd3_symlinkargs {
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struct svc_fh ffh;
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char * fname;
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unsigned int flen;
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char * tname;
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unsigned int tlen;
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struct iattr attrs;
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struct kvec first;
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};
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struct nfsd3_readdirargs {
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struct svc_fh fh;
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__u64 cookie;
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__u32 count;
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__be32 * verf;
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};
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struct nfsd3_commitargs {
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struct svc_fh fh;
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__u64 offset;
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__u32 count;
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};
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struct nfsd3_getaclargs {
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struct svc_fh fh;
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__u32 mask;
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};
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struct posix_acl;
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struct nfsd3_setaclargs {
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struct svc_fh fh;
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__u32 mask;
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struct posix_acl *acl_access;
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struct posix_acl *acl_default;
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};
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struct nfsd3_attrstat {
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__be32 status;
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struct svc_fh fh;
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struct kstat stat;
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};
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/* LOOKUP, CREATE, MKDIR, SYMLINK, MKNOD */
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struct nfsd3_diropres {
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__be32 status;
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struct svc_fh dirfh;
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struct svc_fh fh;
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};
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struct nfsd3_accessres {
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__be32 status;
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struct svc_fh fh;
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__u32 access;
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struct kstat stat;
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};
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struct nfsd3_readlinkres {
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__be32 status;
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struct svc_fh fh;
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__u32 len;
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struct page **pages;
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};
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struct nfsd3_readres {
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__be32 status;
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struct svc_fh fh;
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unsigned long count;
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__u32 eof;
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struct page **pages;
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};
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struct nfsd3_writeres {
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__be32 status;
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struct svc_fh fh;
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unsigned long count;
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int committed;
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__be32 verf[2];
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};
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struct nfsd3_renameres {
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__be32 status;
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struct svc_fh ffh;
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struct svc_fh tfh;
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};
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struct nfsd3_linkres {
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__be32 status;
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struct svc_fh tfh;
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struct svc_fh fh;
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};
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struct nfsd3_readdirres {
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/* Components of the reply */
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__be32 status;
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struct svc_fh fh;
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__be32 verf[2];
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/* Used to encode the reply's entry list */
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struct xdr_stream xdr;
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struct xdr_buf dirlist;
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struct svc_fh scratch;
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struct readdir_cd common;
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unsigned int cookie_offset;
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struct svc_rqst * rqstp;
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};
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struct nfsd3_fsstatres {
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__be32 status;
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struct kstatfs stats;
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__u32 invarsec;
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};
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struct nfsd3_fsinfores {
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__be32 status;
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__u32 f_rtmax;
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__u32 f_rtpref;
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__u32 f_rtmult;
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__u32 f_wtmax;
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__u32 f_wtpref;
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__u32 f_wtmult;
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__u32 f_dtpref;
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__u64 f_maxfilesize;
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__u32 f_properties;
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};
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struct nfsd3_pathconfres {
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__be32 status;
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__u32 p_link_max;
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__u32 p_name_max;
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__u32 p_no_trunc;
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__u32 p_chown_restricted;
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__u32 p_case_insensitive;
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__u32 p_case_preserving;
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};
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struct nfsd3_commitres {
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__be32 status;
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struct svc_fh fh;
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__be32 verf[2];
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};
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struct nfsd3_getaclres {
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__be32 status;
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struct svc_fh fh;
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int mask;
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struct posix_acl *acl_access;
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struct posix_acl *acl_default;
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struct kstat stat;
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};
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/* dummy type for release */
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struct nfsd3_fhandle_pair {
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__u32 dummy;
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struct svc_fh fh1;
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struct svc_fh fh2;
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};
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/*
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* Storage requirements for XDR arguments and results.
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*/
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union nfsd3_xdrstore {
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struct nfsd3_sattrargs sattrargs;
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struct nfsd3_diropargs diropargs;
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struct nfsd3_readargs readargs;
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struct nfsd3_writeargs writeargs;
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struct nfsd3_createargs createargs;
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struct nfsd3_renameargs renameargs;
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struct nfsd3_linkargs linkargs;
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struct nfsd3_symlinkargs symlinkargs;
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struct nfsd3_readdirargs readdirargs;
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struct nfsd3_diropres diropres;
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struct nfsd3_accessres accessres;
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struct nfsd3_readlinkres readlinkres;
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struct nfsd3_readres readres;
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struct nfsd3_writeres writeres;
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struct nfsd3_renameres renameres;
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struct nfsd3_linkres linkres;
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struct nfsd3_readdirres readdirres;
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struct nfsd3_fsstatres fsstatres;
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struct nfsd3_fsinfores fsinfores;
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struct nfsd3_pathconfres pathconfres;
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struct nfsd3_commitres commitres;
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struct nfsd3_getaclres getaclres;
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};
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#define NFS3_SVC_XDRSIZE sizeof(union nfsd3_xdrstore)
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bool nfs3svc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_accessargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_decode_commitargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_getattrres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_wccstat(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_lookupres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_accessres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_readres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_writeres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_createres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_renameres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_linkres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_readdirres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nfs3svc_encode_commitres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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void nfs3svc_release_fhandle(struct svc_rqst *);
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void nfs3svc_release_fhandle2(struct svc_rqst *);
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void nfs3svc_encode_cookie3(struct nfsd3_readdirres *resp, u64 offset);
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int nfs3svc_encode_entry3(void *data, const char *name, int namlen,
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loff_t offset, u64 ino, unsigned int d_type);
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int nfs3svc_encode_entryplus3(void *data, const char *name, int namlen,
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loff_t offset, u64 ino, unsigned int d_type);
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/* Helper functions for NFSv3 ACL code */
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bool svcxdr_decode_nfs_fh3(struct xdr_stream *xdr, struct svc_fh *fhp);
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bool svcxdr_encode_nfsstat3(struct xdr_stream *xdr, __be32 status);
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bool svcxdr_encode_post_op_attr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
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const struct svc_fh *fhp);
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#endif /* _LINUX_NFSD_XDR3_H */
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