clone2(2) — Linux manual page

clone2(2)                  System Calls Manual                  clone2(2)

NAME         top

       clone2, __clone2 - create a child process

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       // glibc wrapper:
       int __clone2(typeof(int (void *)) *fn,
                    void *stack_base, size_t stack_size,
                    int flags, void *arg, ...
                 /* pid_t *parent_tid, struct user_desc *tls,
                    pid_t *child_tid */ );

       // System call:
       long syscall(SYS_clone2, unsigned long flags, void *stack_base,
                   int stack_size,         /* Size of stack */
                   int *parent_tid, int *child_tid,
                   unsigned long tls);

DESCRIPTION         top

       These interfaces are similar to clone(2) but for ia64.

       These interfaces operate in the same way as clone(2), except that
       stack_base points to the lowest address of the child's stack area,
       and stack_size specifies the size of the stack pointed to by
       stack_base.

RETURN VALUE         top

       See clone(2).

ERRORS         top

       See clone(2).

STANDARDS         top

       None.

HISTORY         top

       Linux (ia64).

SEE ALSO         top

       clone(2)

COLOPHON         top

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Linux man-pages 6.19            2026-06-08                      clone2(2)

Pages that refer to this page: clone(2),  syscalls(2)

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