include/clone_internal.h

   1 #ifndef _CLONE_INTERNAL_H
   2 #define _CLONE_INTERNAL_H
   3
   4 #include <clone3.h>
   5
   6 /* The clone3 syscall provides a superset of the functionality of the clone
   7    interface.  The kernel might extend __CL_ARGS struct in the future, with
   8    each version with a diffent __SIZE.  If the child is created, it will
   9    start __FUNC function with __ARG arguments.
  10
  11    Different than kernel, the implementation also returns EINVAL for an
  12    invalid NULL __CL_ARGS or __FUNC (similar to __clone).
  13
  14    All callers are responsible for correctly aligning the stack.  The stack is
  15    not aligned prior to the syscall (this differs from the exported __clone).
  16
  17    This function is only implemented if the ABI defines HAVE_CLONE3_WRAPPER.
  18 */
  19 extern int __clone3 (struct clone_args *__cl_args, size_t __size,
  20                      int (*__func) (void *__arg), void *__arg);
  21
  22 /* The internal wrapper of clone/clone2 and clone3.  Different than __clone3,
  23    it will align the stack if required.  If __clone3 returns -1 with ENOSYS,
  24    fall back to clone or clone2.  */
  25 extern int __clone_internal (struct clone_args *__cl_args,
  26                              int (*__func) (void *__arg), void *__arg);
  27
  28 #ifndef _ISOMAC
  29 libc_hidden_proto (__clone3)
  30 libc_hidden_proto (__clone_internal)
  31 #endif
  32
  33 #endif