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/* Copyright (c) 2004 Russ Cox */
#include <u.h>
#include <libc.h>
#include <venti.h>
#include <thread.h>
#include <libsec.h>
#ifndef _UNISTD_H_
#pragma varargck type "F" VtFcall*
#pragma varargck type "T" void
#endif
VtConn *z;
int verbose;
enum
{
STACK = 8192
};
void
usage(void)
{
fprint(2, "usage: venti/ro [-v] [-a address] [-h address]\n");
threadexitsall("usage");
}
void
readthread(void *v)
{
char err[ERRMAX];
VtReq *r;
uchar *buf;
int n;
r = v;
buf = vtmalloc(r->tx.count);
if((n=vtread(z, r->tx.score, r->tx.blocktype, buf, r->tx.count)) < 0){
r->rx.msgtype = VtRerror;
rerrstr(err, sizeof err);
r->rx.error = vtstrdup(err);
free(buf);
}else{
r->rx.data = packetforeign(buf, n, free, buf);
}
if(verbose)
fprint(2, "-> %F\n", &r->rx);
vtrespond(r);
}
void
threadmain(int argc, char **argv)
{
VtReq *r;
VtSrv *srv;
char *address, *ventiaddress;
fmtinstall('F', vtfcallfmt);
fmtinstall('V', vtscorefmt);
address = "tcp!*!venti";
ventiaddress = nil;
ARGBEGIN{
case 'v':
verbose++;
break;
case 'a':
address = EARGF(usage());
break;
case 'h':
ventiaddress = EARGF(usage());
break;
default:
usage();
}ARGEND
if((z = vtdial(ventiaddress)) == nil)
sysfatal("vtdial %s: %r", ventiaddress);
if(vtconnect(z) < 0)
sysfatal("vtconnect: %r");
srv = vtlisten(address);
if(srv == nil)
sysfatal("vtlisten %s: %r", address);
while((r = vtgetreq(srv)) != nil){
r->rx.msgtype = r->tx.msgtype+1;
if(verbose)
fprint(2, "<- %F\n", &r->tx);
switch(r->tx.msgtype){
case VtTping:
break;
case VtTgoodbye:
break;
case VtTread:
threadcreate(readthread, r, 16384);
continue;
case VtTwrite:
r->rx.error = vtstrdup("read-only server");
r->rx.msgtype = VtRerror;
break;
case VtTsync:
break;
}
if(verbose)
fprint(2, "-> %F\n", &r->rx);
vtrespond(r);
}
threadexitsall(nil);
}
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