lib/libsys/sys_fork.c

   1 #include "syslib.h"
   2
   3 PUBLIC int sys_fork(parent, child, child_endpoint, map_ptr, flags, msgaddr)
   4 endpoint_t parent;              /* process doing the fork */
   5 endpoint_t child;               /* which proc has been created by the fork */
   6 endpoint_t *child_endpoint;
   7 struct mem_map *map_ptr;
   8 u32_t flags;
   9 vir_bytes *msgaddr;
  10 {
  11 /* A process has forked.  Tell the kernel. */
  12
  13   message m;
  14   int r;
  15
  16   m.PR_ENDPT = parent;
  17   m.PR_SLOT = child;
  18   m.PR_MEM_PTR = (char *) map_ptr;
  19   m.PR_FORK_FLAGS = flags;
  20   r = _kernel_call(SYS_FORK, &m);
  21   *child_endpoint = m.PR_ENDPT;
  22   *msgaddr = (vir_bytes) m.PR_FORK_MSGADDR;
  23   return r;
  24 }