minix/lib/libsys/pci_set_acl.c

55 lines
1 KiB
C

/*
pci_set_acl.c
*/
#include "pci.h"
#include "syslib.h"
#include <unistd.h>
#include <minix/rs.h>
#include <minix/ds.h>
#include <minix/sysutil.h>
/*===========================================================================*
* pci_set_acl *
*===========================================================================*/
PUBLIC int pci_set_acl(rs_pci)
struct rs_pci *rs_pci;
{
int r;
cp_grant_id_t gid;
message m;
u32_t u32;
if (pci_procnr == ANY)
{
r= ds_retrieve_label_num("pci", &u32);
if (r != 0)
{
panic("syslib/" __FILE__,
"pci_set_acl: ds_retrieve_label_num failed for 'pci'",
r);
}
pci_procnr = u32;
}
gid= cpf_grant_direct(pci_procnr, (vir_bytes)rs_pci, sizeof(*rs_pci),
CPF_READ);
if (gid == -1)
{
printf("pci_set_acl: cpf_grant_direct failed: %d\n",
errno);
return EINVAL;
}
m.m_type= BUSC_PCI_SET_ACL;
m.m1_i1= gid;
r= sendrec(pci_procnr, &m);
cpf_revoke(gid);
if (r != 0)
panic("syslib/" __FILE__, "pci_set_acl: can't talk to PCI", r);
return m.m_type;
}