minix/minix/lib/libsys/vm_memctl.c
Cristiano Giuffrida 63483e02e6 vm: Improve live update support.
Change-Id: I02da3ea32cd05c4ed84a6e199236e5df6e25cb60
2015-09-16 11:06:41 +00:00

30 lines
472 B
C

#include "syslib.h"
#include <unistd.h>
#include <string.h>
int
vm_memctl(endpoint_t ep, int req, void** addr, size_t *len)
{
message m;
int r;
memset(&m, 0, sizeof(m));
m.VM_RS_CTL_ENDPT = ep;
m.VM_RS_CTL_REQ = req;
m.VM_RS_CTL_ADDR = addr ? *addr : 0;
m.VM_RS_CTL_LEN = len ? *len : 0;
r = _taskcall(VM_PROC_NR, VM_RS_MEMCTL, &m);
if(r != OK) {
return r;
}
if(addr) {
*addr = m.VM_RS_CTL_ADDR;
}
if(len) {
*len = m.VM_RS_CTL_LEN;
}
return OK;
}