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/*
* This document was extracted by hand from RFC 1094. Several errors
* and omissions were corrected. Additional sources for this protocol
* specification include:
*
* https://pubs.opengroup.org/onlinepubs/9629799/chap7.htm
*
* Note that RFC 1094's official date of publication (March 1989) is
* before the IETF required its RFCs to carry an explicit copyright
* or other IP ownership notice.
*/
pragma header nfs2;
const NFS_MAXDATA = 8192;
const NFS_MAXPATHLEN = 1024;
const NFS_MAXNAMLEN = 255;
const NFS_COOKIESIZE = 4;
const NFS_FHSIZE = 32;
/*
* RFC 1094 calls the following enum "stat". That name conflicts with
* the Linux kernel's "struct stat" because in C, struct, union, and
* enum tags all share a single tag namespace. Details are specified
* in the C11 standard, Section 6.2.3.
*/
enum nfsstat {
NFS_OK = 0,
NFSERR_PERM = 1,
NFSERR_NOENT = 2,
NFSERR_IO = 5,
NFSERR_NXIO = 6,
NFSERR_ACCES = 13,
NFSERR_EXIST = 17,
NFSERR_NODEV = 19,
NFSERR_NOTDIR = 20,
NFSERR_ISDIR = 21,
NFSERR_FBIG = 27,
NFSERR_NOSPC = 28,
NFSERR_ROFS = 30,
NFSERR_NAMETOOLONG = 63,
NFSERR_NOTEMPTY = 66,
NFSERR_DQUOT = 69,
NFSERR_STALE = 70,
NFSERR_WFLUSH = 99
};
pragma big_endian nfsstat;
enum ftype {
NFNON = 0,
NFREG = 1,
NFDIR = 2,
NFBLK = 3,
NFCHR = 4,
NFLNK = 5
};
typedef opaque fhandle[NFS_FHSIZE];
typedef opaque nfscookie[NFS_COOKIESIZE];
struct timeval {
unsigned int seconds;
unsigned int useconds;
};
struct fattr {
ftype type;
unsigned int mode;
unsigned int nlink;
unsigned int uid;
unsigned int gid;
unsigned int size;
unsigned int blocksize;
unsigned int rdev;
unsigned int blocks;
unsigned int fsid;
unsigned int fileid;
timeval atime;
timeval mtime;
timeval ctime;
};
struct sattr {
unsigned int mode;
unsigned int uid;
unsigned int gid;
unsigned int size;
timeval atime;
timeval mtime;
};
typedef string filename<NFS_MAXNAMLEN>;
typedef string path<NFS_MAXPATHLEN>;
union attrstat switch (nfsstat status) {
case NFS_OK:
fattr attributes;
default:
void;
};
struct diropargs {
fhandle dir;
filename name;
};
struct diropok {
fhandle file;
fattr attributes;
};
union diropres switch (nfsstat status) {
case NFS_OK:
diropok diropok;
default:
void;
};
struct sattrargs {
fhandle file;
sattr attributes;
};
union readlinkres switch (nfsstat status) {
case NFS_OK:
path data;
default:
void;
};
pragma pages readlinkres data;
struct readargs {
fhandle file;
unsigned int offset;
unsigned int count;
unsigned int totalcount;
};
struct readresok {
fattr attributes;
opaque data<NFS_MAXDATA>;
};
pragma pages readresok data;
union readres switch (nfsstat status) {
case NFS_OK:
readresok readresok;
default:
void;
};
struct writeargs {
fhandle file;
unsigned int beginoffset;
unsigned int offset;
unsigned int totalcount;
opaque data<NFS_MAXDATA>;
};
pragma pages writeargs data;
struct createargs {
diropargs where;
sattr attributes;
};
struct renameargs {
diropargs from;
diropargs to;
};
struct linkargs {
fhandle from;
diropargs to;
};
struct symlinkargs {
diropargs from;
path to;
sattr attributes;
};
pragma pages symlinkargs to;
struct readdirargs {
fhandle dir;
nfscookie cookie;
unsigned int count;
};
struct entry {
unsigned int fileid;
filename name;
nfscookie cookie;
entry *nextentry;
};
struct readdirok {
entry *entries;
bool eof;
};
/*
* A spike encoding the entry list through the aggregate codec. The
* list encodes as the value-follows form -- each entry prefixed by
* TRUE, the sequence closed by FALSE -- and the encode hooks stream it
* straight from the directory during reply encoding rather than from a
* materialized array. The struct definitions above are the verbatim
* RFC 1094 types; only this pragma selects the hook-driven codec.
*/
pragma aggregate readdirok entries;
union readdirres switch (nfsstat status) {
case NFS_OK:
readdirok readdirok;
default:
void;
};
struct info {
unsigned int tsize;
unsigned int bsize;
unsigned int blocks;
unsigned int bfree;
unsigned int bavail;
};
union statfsres switch (nfsstat status) {
case NFS_OK:
info info;
default:
void;
};
program NFS_PROGRAM {
version NFS_VERSION {
void NFSPROC_NULL(void) = 0;
attrstat NFSPROC_GETATTR(fhandle) = 1;
attrstat NFSPROC_SETATTR(sattrargs) = 2;
void NFSPROC_ROOT(void) = 3;
diropres NFSPROC_LOOKUP(diropargs) = 4;
readlinkres NFSPROC_READLINK(fhandle) = 5;
readres NFSPROC_READ(readargs) = 6;
void NFSPROC_WRITECACHE(void) = 7;
attrstat NFSPROC_WRITE(writeargs) = 8;
diropres NFSPROC_CREATE(createargs) = 9;
nfsstat NFSPROC_REMOVE(diropargs) = 10;
nfsstat NFSPROC_RENAME(renameargs) = 11;
nfsstat NFSPROC_LINK(linkargs) = 12;
nfsstat NFSPROC_SYMLINK(symlinkargs) = 13;
diropres NFSPROC_MKDIR(createargs) = 14;
nfsstat NFSPROC_RMDIR(diropargs) = 15;
readdirres NFSPROC_READDIR(readdirargs) = 16;
statfsres NFSPROC_STATFS(fhandle) = 17;
} = 2;
} = 100003;
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