minix/lib/libsys/vm_info.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

58 lines
1.5 KiB
C

#include "syslib.h"
#include <string.h>
#include <minix/vm.h>
/*===========================================================================*
* vm_info_stats *
*===========================================================================*/
int vm_info_stats(struct vm_stats_info *vsi)
{
message m;
memset(&m, 0, sizeof(m));
m.VMI_WHAT = VMIW_STATS;
m.VMI_PTR = (void *) vsi;
return _taskcall(VM_PROC_NR, VM_INFO, &m);
}
/*===========================================================================*
* vm_info_usage *
*===========================================================================*/
int vm_info_usage(endpoint_t who, struct vm_usage_info *vui)
{
message m;
memset(&m, 0, sizeof(m));
m.VMI_WHAT = VMIW_USAGE;
m.VMI_EP = who;
m.VMI_PTR = (void *) vui;
return _taskcall(VM_PROC_NR, VM_INFO, &m);
}
/*===========================================================================*
* vm_info_region *
*===========================================================================*/
int vm_info_region(endpoint_t who, struct vm_region_info *vri,
int count, vir_bytes *next)
{
message m;
int result;
memset(&m, 0, sizeof(m));
m.VMI_WHAT = VMIW_REGION;
m.VMI_EP = who;
m.VMI_COUNT = count;
m.VMI_PTR = (void *) vri;
m.VMI_NEXT = *next;
if ((result = _taskcall(VM_PROC_NR, VM_INFO, &m)) != OK)
return result;
*next = m.VMI_NEXT;
return m.VMI_COUNT;
}