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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/compat/linux/linux_fork.h
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/*-

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (c) 2021 Dmitry Chagin <[email protected]>

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#ifndef _LINUX_FORK_H_

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#define _LINUX_FORK_H_

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#define	LINUX_CLONE_VM			0x00000100

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#define	LINUX_CLONE_FS			0x00000200

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#define	LINUX_CLONE_FILES		0x00000400

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#define	LINUX_CLONE_SIGHAND		0x00000800

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#define	LINUX_CLONE_PIDFD		0x00001000	/* since Linux 5.2 */

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#define	LINUX_CLONE_PTRACE		0x00002000

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#define	LINUX_CLONE_VFORK		0x00004000

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#define	LINUX_CLONE_PARENT		0x00008000

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#define	LINUX_CLONE_THREAD		0x00010000

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#define	LINUX_CLONE_NEWNS		0x00020000	/* New mount NS */

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#define	LINUX_CLONE_SYSVSEM		0x00040000

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#define	LINUX_CLONE_SETTLS		0x00080000

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#define	LINUX_CLONE_PARENT_SETTID	0x00100000

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#define	LINUX_CLONE_CHILD_CLEARTID	0x00200000

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#define	LINUX_CLONE_DETACHED		0x00400000	/* Unused */

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#define	LINUX_CLONE_UNTRACED		0x00800000

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#define	LINUX_CLONE_CHILD_SETTID	0x01000000

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#define	LINUX_CLONE_NEWCGROUP		0x02000000	/* New cgroup NS */

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#define	LINUX_CLONE_NEWUTS		0x04000000

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#define	LINUX_CLONE_NEWIPC		0x08000000

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#define	LINUX_CLONE_NEWUSER		0x10000000

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#define	LINUX_CLONE_NEWPID		0x20000000

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#define	LINUX_CLONE_NEWNET		0x40000000

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#define	LINUX_CLONE_IO			0x80000000

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/* Flags for the clone3() syscall. */

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#define	LINUX_CLONE_CLEAR_SIGHAND	0x100000000ULL

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#define	LINUX_CLONE_INTO_CGROUP		0x200000000ULL

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#define	LINUX_CLONE_NEWTIME		0x00000080

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#define	LINUX_CLONE_LEGACY_FLAGS	0xffffffffULL

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#define	LINUX_CSIGNAL			0x000000ff

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#if defined(_KERNEL)

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/*

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 * User-space clone3 args layout.

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 */

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struct l_user_clone_args {

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	uint64_t flags;

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	uint64_t pidfd;

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	uint64_t child_tid;

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	uint64_t parent_tid;

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	uint64_t exit_signal;

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	uint64_t stack;

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	uint64_t stack_size;

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	uint64_t tls;

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	uint64_t set_tid;

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	uint64_t set_tid_size;

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	uint64_t cgroup;

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};

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/*

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 * Kernel clone3 args layout.

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 */

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struct l_clone_args {

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	uint64_t flags;

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	l_int *child_tid;

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	l_int *parent_tid;

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	l_int exit_signal;

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	l_ulong stack;

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	l_ulong stack_size;

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	l_ulong tls;

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};

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#define	LINUX_CLONE_ARGS_SIZE_VER0	64

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int linux_set_upcall(struct thread *, register_t);

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int linux_set_cloned_tls(struct thread *, void *);

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void linux_thread_detach(struct thread *);

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#endif /* defined(_KERNEL) */

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#endif /* _LINUX_FORK_H_ */

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