xref: /minix/minix/lib/libsys/sys_vircopy.c (revision 83133719) 
1 #include "syslib.h"
2 
3 int sys_vircopy(src_proc, src_vir,
4 	dst_proc, dst_vir, bytes, flags)
5 endpoint_t src_proc;		/* source process */
6 vir_bytes src_vir;		/* source virtual address */
7 endpoint_t dst_proc;		/* destination process */
8 vir_bytes dst_vir;		/* destination virtual address */
9 phys_bytes bytes;		/* how many bytes */
10 int flags;			/* copy flags */
11 {
12 /* Transfer a block of data.  The source and destination can each either be a
13  * process number or SELF (to indicate own process number).
14  */
15 
16   message copy_mess;
17 
18   if (bytes == 0L) return(OK);
19   memset(&copy_mess, 0, sizeof(copy_mess));
20   copy_mess.m_lsys_krn_sys_copy.src_endpt = src_proc;
21   copy_mess.m_lsys_krn_sys_copy.src_addr = src_vir;
22   copy_mess.m_lsys_krn_sys_copy.dst_endpt = dst_proc;
23   copy_mess.m_lsys_krn_sys_copy.dst_addr = dst_vir;
24   copy_mess.m_lsys_krn_sys_copy.nr_bytes = bytes;
25   copy_mess.m_lsys_krn_sys_copy.flags = flags;
26 
27   return(_kernel_call(SYS_VIRCOPY, &copy_mess));
28 }
29