minix/lib/libsys/vm_map_phys.c
David van Moolenbroek 80bd109cd3 libsys: various updates
- move system calls for use by services from libminlib into libsys;
- move srv_fork(2) and srv_kill(2) from RS and into libsys;
- replace getprocnr(2) with sef_self(3);
- rename previous getnprocnr(2) to getprocnr(2);
- clean up getepinfo(2);
- change all libsys calls that used _syscall to use _taskcall, so as
  to avoid going through errno to pass errors; this is already how
  most calls work anyway, and many of the calls previously using
  _syscall were already assumed to return the actual error;
- initialize request messages to zero, for future compatibility
  (note that this does not include PCI calls, which are in need of a
  much bigger overhaul, nor kernel calls);
- clean up more of dead DS code as a side effect.

Change-Id: I8788f54c68598fcf58e23486e270c2d749780ebb
2014-03-01 09:05:00 +01:00

36 lines
595 B
C

#include "syslib.h"
#include <sys/mman.h>
#include <minix/vm.h>
#include <stdarg.h>
#include <string.h>
void *
vm_map_phys(endpoint_t who, void *phaddr, size_t len)
{
message m;
int r;
memset(&m, 0, sizeof(m));
m.VMMP_EP = who;
m.VMMP_PHADDR = phaddr;
m.VMMP_LEN = len;
r = _taskcall(VM_PROC_NR, VM_MAP_PHYS, &m);
if (r != OK) return MAP_FAILED;
return (void *) m.VMMP_VADDR_REPLY;
}
int
vm_unmap_phys(endpoint_t who, void *vaddr, size_t len)
{
message m;
memset(&m, 0, sizeof(m));
m.VMUP_EP = who;
m.VMUP_VADDR = vaddr;
return _taskcall(VM_PROC_NR, VM_UNMAP_PHYS, &m);
}