STYXCONV(2) STYXCONV(2)
NAME
styxconv - convert between old 1995 Styx and current Styx
(9P)
SYNOPSIS
include "styxconv.m";
styxconv := load Styxconv Styxconv->PATHNEW2OLD;
styxconv := load Styxconv Styxconv->PATHOLD2NEW;
init: fn();
styxconv: fn(client: ref Sys->FD, server: ref Sys->FD);
DESCRIPTION
Styxconv converts between the obsolete 1995 version of the
Styx protocol, as used for instance in Inferno's Third Edi-
tion and earlier, and the current file service protocol,
previously also called `Styx' but based on 9P2000 and
defined by intro(5).
Init must be called before any other function in the module.
The function styxconv takes two file descriptors: client
should be a connection to a client requiring one version of
the protocol; server should be a connection to a server
serving the other version of the protocol. There are two
conversion modules: PATHNEW2OLD converts from a new client
to an old server; PATHOLD2NEW converts from an old client to
a new server.
Styxconv should be spawned by the caller, and copies mes-
sages between client and server, converting as required.
See the example below.
EXAMPLE
Apply styxconv to file descriptor fd, connected to an old
Styx server, and return a file descriptor suitable for
mounting with mount(2).
cvstyx(fd: ref Sys->FD): ref Sys->FD
{
styxconv := load Styxconv Styxconv->NEW2OLDPATH;
if(styxconv == nil)
return nil;
p := array[2] of ref Sys->FD;
if(sys->pipe(p) < 0)
return nil;
styxconv->init();
spawn styxconv->styxconv(p[1], fd);
return p[0];
}
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STYXCONV(2) STYXCONV(2)
SOURCE
/appl/lib/styxconv
SEE ALSO
bind(1), sys-bind(2), sys-pipe(2), intro(5)
BUGS
There is no provision for 9P2000 authentication.
Page 2 Plan 9 (printed 3/13/25)