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