minix/lib/libsys/sys_fork.c
2012-03-25 21:58:14 +02:00

24 lines
592 B
C

#include "syslib.h"
int sys_fork(parent, child, child_endpoint, map_ptr, flags, msgaddr)
endpoint_t parent; /* process doing the fork */
endpoint_t child; /* which proc has been created by the fork */
endpoint_t *child_endpoint;
struct mem_map *map_ptr;
u32_t flags;
vir_bytes *msgaddr;
{
/* A process has forked. Tell the kernel. */
message m;
int r;
m.PR_ENDPT = parent;
m.PR_SLOT = child;
m.PR_MEM_PTR = (char *) map_ptr;
m.PR_FORK_FLAGS = flags;
r = _kernel_call(SYS_FORK, &m);
*child_endpoint = m.PR_ENDPT;
*msgaddr = (vir_bytes) m.PR_FORK_MSGADDR;
return r;
}