marignotti/msetsockopt.c
2016-01-05 19:59:13 -05:00

172 lines
3.5 KiB
C

#include "marignotti.h"
#include <gno/kerntool.h>
#include <errno.h>
#include <sys/socket.h>
#include <sys/time.h>
#pragma noroot
#pragma optimize 79
static LongWord timeval_to_ticks(struct timeval tv)
{
LongWord rv;
rv = 0;
if (tv.tv_usec || tv.tv_sec)
{
if (tv.tv_sec)
rv = 60 * tv.tv_sec;
// usec = 1/1,000,000
// split into 60
if (tv.tv_usec)
rv += ((tv.tv_usec + 16666) / 16667);
if (!rv) rv = 1;
}
return rv;
}
static boolean get_flag(void *p, int size, Word *flag)
{
if (size == 4)
{
*flag = *(LongWord *)flag;
return true;
}
if (size == 2)
{
*flag = *(Word *)flag;
return true;
}
if (size == 1)
{
*flag = *(Byte *)flag;
return true;
}
return false;
}
static boolean get_flag_long(void *p, int size, LongWord *flag)
{
if (size == 4)
{
*flag = *(LongWord *)flag;
return true;
}
if (size == 2)
{
*flag = *(Word *)flag;
return true;
}
if (size == 1)
{
*flag = *(Byte *)flag;
return true;
}
return false;
}
int msetsockopt(Entry *e, void *p1, void *p2, void *p3, void *p4, void *p5)
{
Word terr;
Word t;
Word flag;
int level = *(int *)p1;
int optname = *(int *)p2;
void *optval = (void *)p3;
int optlen = p4 ? *(int *)p4 : 0;
if (level != SOL_SOCKET) return EINVAL;
if (!optval) return EINVAL;
// todo -- linger.
// todo -- oobinline (error if 0?)
switch(optname)
{
case SO_DEBUG:
if (!get_flag(optval, optlen, &flag))
return EINVAL;
e->_DEBUG = flag ? 1 : 0;
return 0;
case SO_REUSEADDR:
if (!get_flag(optval, optlen, &flag))
return EINVAL;
e->_REUSEADDR = flag ? 1 : 0;
return 0;
case SO_REUSEPORT:
if (!get_flag(optval, optlen, &flag))
return EINVAL;
e->_REUSEPORT = flag ? 1 : 0;
return 0;
case SO_KEEPALIVE:
if (!get_flag(optval, optlen, &flag))
return EINVAL;
e->_KEEPALIVE = flag ? 1 : 0;
return 0;
case SO_OOBINLINE:
// always 1.
if (!get_flag(optval, optlen, &flag))
return EINVAL;
if (!flag)
return EINVAL;
return 0;
break;
case SO_SNDLOWAT:
// 0 is valid.
if (!get_flag_long(optval, optlen, &e->_SNDLOWAT))
return EINVAL;
return 0;
break;
case SO_RCVLOWAT:
// min size = 1.
if (!get_flag_long(optval, optlen, &e->_RCVLOWAT))
return EINVAL;
if (e->_RCVLOWAT) return 0;
e->_RCVLOWAT = 1;
return EINVAL;
break;
case SO_SNDTIMEO:
if (optlen == sizeof(struct timeval))
{
// stored as ticks aka seconds * 60.
struct timeval *tv = (struct timeval *)optval;
e->_SNDTIMEO = timeval_to_ticks(*tv);
return 0;
}
break;
case SO_RCVTIMEO:
if (optlen == sizeof(struct timeval))
{
// stored as ticks aka seconds * 60.
struct timeval *tv = (struct timeval *)optval;
e->_RCVTIMEO = timeval_to_ticks(*tv);
return 0;
}
break;
}
return EINVAL;
}