minix/servers/vm/rs.c
2010-06-28 21:53:37 +00:00

125 lines
2.6 KiB
C

#define _SYSTEM 1
#include <minix/callnr.h>
#include <minix/com.h>
#include <minix/config.h>
#include <minix/const.h>
#include <minix/ds.h>
#include <minix/endpoint.h>
#include <minix/keymap.h>
#include <minix/minlib.h>
#include <minix/type.h>
#include <minix/ipc.h>
#include <minix/sysutil.h>
#include <minix/syslib.h>
#include <minix/safecopies.h>
#include <minix/bitmap.h>
#include <errno.h>
#include <string.h>
#include <env.h>
#include <stdio.h>
#include <assert.h>
#include "glo.h"
#include "proto.h"
#include "util.h"
#include "region.h"
/*===========================================================================*
* do_rs_set_priv *
*===========================================================================*/
PUBLIC int do_rs_set_priv(message *m)
{
int r, n, nr;
struct vmproc *vmp;
nr = m->VM_RS_NR;
if ((r = vm_isokendpt(nr, &n)) != OK) {
printf("do_rs_set_priv: bad endpoint %d\n", nr);
return EINVAL;
}
vmp = &vmproc[n];
if (m->VM_RS_BUF) {
r = sys_datacopy(m->m_source, (vir_bytes) m->VM_RS_BUF,
SELF, (vir_bytes) vmp->vm_call_mask,
sizeof(vmp->vm_call_mask));
if (r != OK)
return r;
}
return OK;
}
/*===========================================================================*
* do_rs_update *
*===========================================================================*/
PUBLIC int do_rs_update(message *m_ptr)
{
endpoint_t src_e, dst_e, reply_e;
int r;
src_e = m_ptr->VM_RS_SRC_ENDPT;
dst_e = m_ptr->VM_RS_DST_ENDPT;
/* Let the kernel do the update first. */
r = sys_update(src_e, dst_e);
if(r != OK) {
return r;
}
/* Do the update in VM now. */
r = swap_proc(src_e, dst_e);
if(r != OK) {
return r;
}
/* Reply, update-aware. */
reply_e = m_ptr->m_source;
if(reply_e == src_e) reply_e = dst_e;
if(reply_e == dst_e) reply_e = src_e;
m_ptr->m_type = OK;
r = send(reply_e, m_ptr);
if(r != OK) {
panic("send() error");
}
return SUSPEND;
}
/*===========================================================================*
* do_rs_memctl *
*===========================================================================*/
PUBLIC int do_rs_memctl(message *m_ptr)
{
endpoint_t ep;
int req, r, proc_nr;
struct vmproc *vmp;
ep = m_ptr->VM_RS_CTL_ENDPT;
req = m_ptr->VM_RS_CTL_REQ;
/* Lookup endpoint. */
if ((r = vm_isokendpt(ep, &proc_nr)) != OK) {
printf("do_rs_memctl: bad endpoint %d\n", ep);
return EINVAL;
}
vmp = &vmproc[proc_nr];
/* Process request. */
switch(req)
{
case VM_RS_MEM_PIN:
r = map_pin_memory(vmp);
return r;
default:
printf("do_rs_memctl: bad request %d\n", req);
return EINVAL;
}
}