.\" Copyright 1992, Drew Eckhardt <drew@cs.colorado.edu>
.\" Copyright 2001-2019, Michael Kerrisk <mtk.manpages@gmail.com>
.\" Copyright, the authors of the Linux man-pages project
.\"
.\" SPDX-License-Identifier: GPL-1.0-or-later
.\"
.TH clone2 2 2026-06-08 "Linux man-pages 6.19"
.SH NAME
clone2, __clone2 \- create a child process
.SH LIBRARY
Standard C library
.RI ( libc ,\~ \-lc )
.SH SYNOPSIS
.nf
// glibc wrapper:
.BI "int __clone2(typeof(int (void *)) *" fn ,
.BI "             void *" stack_base ", size_t " stack_size ,
.BI "             int " flags ", void *" "arg" ", ..."
.BI "          \f[R]/*\f[] pid_t *" parent_tid ", struct user_desc *" tls ,
.BI "             pid_t *" child_tid " \f[R]*/\f[] );"
.P
// System call:
.BI "long syscall(SYS_clone2, unsigned long " flags ", void *" stack_base ,
.BI "            int " stack_size , "\f[R]         /* Size of stack */\f[]"
.BI "            int *" parent_tid ", int *" child_tid ,
.BI "            unsigned long " tls );
.fi
.SH DESCRIPTION
These interfaces are similar to
.BR clone (2)
but for ia64.
.P
These interfaces
operate in the same way as
.BR clone (2),
except that
.I stack_base
points to the lowest address of the child's stack area,
and
.I stack_size
specifies the size of the stack pointed to by
.IR stack_base .
.SH RETURN VALUE
See
.BR clone (2).
.SH ERRORS
See
.BR clone (2).
.SH STANDARDS
None.
.SH HISTORY
Linux (ia64).
.SH SEE ALSO
.BR clone (2)