minix/lib/libsys/mapdriver.c

   1 #include "syslib.h"
   2
   3 #include <string.h>
   4 #include <unistd.h>
   5
   6 int
   7 mapdriver(const char * label, devmajor_t major, const int * domains,
   8         int ndomains)
   9 {
  10         message m;
  11         int i;
  12
  13         memset(&m, 0, sizeof(m));
  14         m.m_lsys_vfs_mapdriver.label = (vir_bytes)label;
  15         m.m_lsys_vfs_mapdriver.labellen = strlen(label) + 1;
  16         m.m_lsys_vfs_mapdriver.major = major;
  17         m.m_lsys_vfs_mapdriver.ndomains = ndomains;
  18         if (ndomains > (int)__arraycount(m.m_lsys_vfs_mapdriver.domains))
  19                 ndomains = (int)__arraycount(m.m_lsys_vfs_mapdriver.domains);
  20         for (i = 0; i < ndomains; i++)
  21                 m.m_lsys_vfs_mapdriver.domains[i] = domains[i];
  22
  23         return _taskcall(VFS_PROC_NR, VFS_MAPDRIVER, &m);
  24 }