minix/lib/syslib/sys_vircp.c
2005-04-21 14:53:53 +00:00

29 lines
998 B
C

#include "syslib.h"
PUBLIC int sys_vircopy(src_proc, src_seg, src_vir,
dst_proc, dst_seg, dst_vir, bytes)
int src_proc; /* source process */
int src_seg; /* source memory segment */
vir_bytes src_vir; /* source virtual address */
int dst_proc; /* destination process */
int dst_seg; /* destination memory segment */
vir_bytes dst_vir; /* destination virtual address */
phys_bytes bytes; /* how many bytes */
{
/* Transfer a block of data. The source and destination can each either be a
* process number or SELF (to set own process number). The virtual address is
* in the data segment (D).
*/
message copy_mess;
if (bytes == 0L) return(OK);
copy_mess.CP_SRC_PROC_NR = src_proc;
copy_mess.CP_SRC_SPACE = src_seg;
copy_mess.CP_SRC_ADDR = (long) src_vir;
copy_mess.CP_DST_PROC_NR = dst_proc;
copy_mess.CP_DST_SPACE = dst_seg;
copy_mess.CP_DST_ADDR = (long) dst_vir;
copy_mess.CP_NR_BYTES = (long) bytes;
return(_taskcall(SYSTASK, SYS_VIRCOPY, &copy_mess));
}