servers/vm/rs.c

   1
   2 #define _SYSTEM 1
   3
   4 #define VERBOSE 0
   5
   6 #include <minix/callnr.h>
   7 #include <minix/com.h>
   8 #include <minix/config.h>
   9 #include <minix/const.h>
  10 #include <minix/ds.h>
  11 #include <minix/endpoint.h>
  12 #include <minix/keymap.h>
  13 #include <minix/minlib.h>
  14 #include <minix/type.h>
  15 #include <minix/ipc.h>
  16 #include <minix/sysutil.h>
  17 #include <minix/syslib.h>
  18 #include <minix/safecopies.h>
  19 #include <minix/bitmap.h>
  20
  21 #include <errno.h>
  22 #include <string.h>
  23 #include <env.h>
  24 #include <stdio.h>
  25
  26 #include "glo.h"
  27 #include "proto.h"
  28 #include "util.h"
  29
  30 /*===========================================================================*
  31  *                              do_rs_set_priv                               *
  32  *===========================================================================*/
  33 PUBLIC int do_rs_set_priv(message *m)
  34 {
  35         int r, n, nr;
  36         struct vmproc *vmp;
  37
  38         nr = m->VM_RS_NR;
  39
  40         if ((r = vm_isokendpt(nr, &n)) != OK) {
  41                 printf("do_rs_set_priv: message from strange source %d\n", nr);
  42                 return EINVAL;
  43         }
  44
  45         vmp = &vmproc[n];
  46
  47         if (m->VM_RS_BUF) {
  48                 r = sys_datacopy(m->m_source, (vir_bytes) m->VM_RS_BUF,
  49                                  SELF, (vir_bytes) vmp->vm_call_priv_mask,
  50                                  sizeof(vmp->vm_call_priv_mask));
  51                 if (r != OK)
  52                         return r;
  53         }
  54
  55         return OK;
  56 }
  57