lib/libsys/pci_set_acl.c

   1 /*
   2 pci_set_acl.c
   3 */
   4
   5 #include "pci.h"
   6 #include "syslib.h"
   7 #include <unistd.h>
   8 #include <minix/rs.h>
   9 #include <minix/ds.h>
  10 #include <minix/sysutil.h>
  11
  12 /*===========================================================================*
  13  *                              pci_set_acl                                  *
  14  *===========================================================================*/
  15 int pci_set_acl(rs_pci)
  16 struct rs_pci *rs_pci;
  17 {
  18         int r;
  19         cp_grant_id_t gid;
  20         message m;
  21         endpoint_t endpoint;
  22
  23         if (pci_procnr == ANY)
  24         {
  25                 r= ds_retrieve_label_endpt("pci", &endpoint);
  26                 if (r != 0)
  27                 {
  28                         panic("pci_set_acl: ds_retrieve_label_endpt failed for 'pci': %d", r);
  29                 }
  30                 pci_procnr = endpoint;
  31         }
  32
  33
  34         gid= cpf_grant_direct(pci_procnr, (vir_bytes)rs_pci, sizeof(*rs_pci),
  35                 CPF_READ);
  36         if (gid == -1)
  37         {
  38                 printf("pci_set_acl: cpf_grant_direct failed: %d\n",
  39                         errno);
  40                 return EINVAL;
  41         }
  42
  43         m.m_type= BUSC_PCI_SET_ACL;
  44         m.m1_i1= gid;
  45
  46         r= sendrec(pci_procnr, &m);
  47         cpf_revoke(gid);
  48         if (r != 0)
  49                 panic("pci_set_acl: can't talk to PCI: %d", r);
  50
  51         return m.m_type;
  52 }
  53