marignotti/mwrite.c
2012-05-05 01:08:06 -04:00

50 lines
959 B
C

#include "marignotti.h"
#include <gno/kerntool.h>
#include <sys/signal.h>
#include <errno.h>
#pragma noroot
#pragma optimize 79
// called through GSOS.
int mwrite(Entry *e, void *p1, void *p2, void *p3, void *p4, void *p5)
{
Word terr;
Word t;
int xerrno;
char *buffer = (char *)p1;
LongWord nbytes = *(LongWord *)p2;
*(LongWord *)p2 = 0;
// todo -- queue up if pending >= _SNDLOWAT?
// todo -- push?
IncBusy();
terr = TCPIPWriteTCP(e->ipid, buffer, nbytes, 0, 0);
t = _toolErr;
DecBusy();
if (t) terr = t;
if (t || terr == tcperrBadConnection)
return ENOTCONN;
if (terr == tcperrNoResources)
return ENOMEM;
if (terr == tcperrConClosing)
{
int xerrno;
if (!e->_NOSIGPIPE)
Kkill(Kgetpid(), SIGPIPE, &xerrno);
return EPIPE;
}
*(LongWord *)p2 = nbytes;
return 0;
}