minix/lib/libsys/sys_umap.c

   1 #include "syslib.h"
   2
   3 /*===========================================================================*
   4  *                                sys_umap                                   *
   5  *===========================================================================*/
   6 int sys_umap(proc_ep, seg, vir_addr, bytes, phys_addr)
   7 endpoint_t proc_ep;                     /* process number to do umap for */
   8 int seg;                                /* T, D, or S segment */
   9 vir_bytes vir_addr;                     /* address in bytes with segment*/
  10 vir_bytes bytes;                        /* number of bytes to be copied */
  11 phys_bytes *phys_addr;                  /* placeholder for result */
  12 {
  13     message m;
  14     int result;
  15
  16     m.m_lsys_krn_sys_umap.src_endpt = proc_ep;
  17     m.m_lsys_krn_sys_umap.segment = seg;
  18     m.m_lsys_krn_sys_umap.src_addr = vir_addr;
  19     m.m_lsys_krn_sys_umap.nr_bytes = bytes;
  20
  21     result = _kernel_call(SYS_UMAP, &m);
  22     *phys_addr = m.m_krn_lsys_sys_umap.dst_addr;
  23     return(result);
  24 }
  25