1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021 Dmitry Chagin <dchagin@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _LINUX_FORK_H_ 29 #define _LINUX_FORK_H_ 30 31 #define LINUX_CLONE_VM 0x00000100 32 #define LINUX_CLONE_FS 0x00000200 33 #define LINUX_CLONE_FILES 0x00000400 34 #define LINUX_CLONE_SIGHAND 0x00000800 35 #define LINUX_CLONE_PIDFD 0x00001000 /* since Linux 5.2 */ 36 #define LINUX_CLONE_PTRACE 0x00002000 37 #define LINUX_CLONE_VFORK 0x00004000 38 #define LINUX_CLONE_PARENT 0x00008000 39 #define LINUX_CLONE_THREAD 0x00010000 40 #define LINUX_CLONE_NEWNS 0x00020000 /* New mount NS */ 41 #define LINUX_CLONE_SYSVSEM 0x00040000 42 #define LINUX_CLONE_SETTLS 0x00080000 43 #define LINUX_CLONE_PARENT_SETTID 0x00100000 44 #define LINUX_CLONE_CHILD_CLEARTID 0x00200000 45 #define LINUX_CLONE_DETACHED 0x00400000 /* Unused */ 46 #define LINUX_CLONE_UNTRACED 0x00800000 47 #define LINUX_CLONE_CHILD_SETTID 0x01000000 48 #define LINUX_CLONE_NEWCGROUP 0x02000000 /* New cgroup NS */ 49 #define LINUX_CLONE_NEWUTS 0x04000000 50 #define LINUX_CLONE_NEWIPC 0x08000000 51 #define LINUX_CLONE_NEWUSER 0x10000000 52 #define LINUX_CLONE_NEWPID 0x20000000 53 #define LINUX_CLONE_NEWNET 0x40000000 54 #define LINUX_CLONE_IO 0x80000000 55 56 /* Flags for the clone3() syscall. */ 57 #define LINUX_CLONE_CLEAR_SIGHAND 0x100000000ULL 58 #define LINUX_CLONE_INTO_CGROUP 0x200000000ULL 59 #define LINUX_CLONE_NEWTIME 0x00000080 60 61 #define LINUX_CLONE_LEGACY_FLAGS 0xffffffffULL 62 63 #define LINUX_CSIGNAL 0x000000ff 64 65 #if defined(_KERNEL) 66 /* 67 * User-space clone3 args layout. 68 */ 69 struct l_user_clone_args { 70 uint64_t flags; 71 uint64_t pidfd; 72 uint64_t child_tid; 73 uint64_t parent_tid; 74 uint64_t exit_signal; 75 uint64_t stack; 76 uint64_t stack_size; 77 uint64_t tls; 78 uint64_t set_tid; 79 uint64_t set_tid_size; 80 uint64_t cgroup; 81 }; 82 83 /* 84 * Kernel clone3 args layout. 85 */ 86 struct l_clone_args { 87 uint64_t flags; 88 l_int *child_tid; 89 l_int *parent_tid; 90 l_int exit_signal; 91 l_ulong stack; 92 l_ulong stack_size; 93 l_ulong tls; 94 }; 95 96 #define LINUX_CLONE_ARGS_SIZE_VER0 64 97 98 int linux_set_upcall(struct thread *, register_t); 99 int linux_set_cloned_tls(struct thread *, void *); 100 void linux_thread_detach(struct thread *); 101 #endif /* defined(_KERNEL) */ 102 103 #endif /* _LINUX_FORK_H_ */ 104