1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 Roman Divacky 5 * All rights reserved. 6 * Copyright (c) 2013 Dmitry Chagin <dchagin@FreeBSD.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _LINUX_EMUL_H_ 33 #define _LINUX_EMUL_H_ 34 35 struct image_params; 36 struct note_info_list; 37 38 /* Linux core notes are labeled "CORE" */ 39 #define LINUX_ABI_VENDOR "CORE" 40 41 /* 42 * modeled after similar structure in NetBSD 43 * this will be extended as we need more functionality 44 */ 45 struct linux_emuldata { 46 int *child_set_tid; /* in clone(): Child's TID to set on clone */ 47 int *child_clear_tid;/* in clone(): Child's TID to clear on exit */ 48 49 int flags; /* thread emuldata flags */ 50 int em_tid; /* thread id */ 51 52 struct linux_robust_list_head *robust_futexes; 53 }; 54 55 struct linux_emuldata *em_find(struct thread *); 56 57 int linux_exec_imgact_try(struct image_params *); 58 void linux_proc_init(struct thread *, struct thread *, bool); 59 void linux_on_exit(struct proc *); 60 void linux_schedtail(struct thread *); 61 void linux_on_exec(struct proc *, struct image_params *); 62 void linux_thread_dtor(struct thread *); 63 int linux_common_execve(struct thread *, struct image_args *); 64 void linux32_prepare_notes(struct thread *, struct note_info_list *, size_t *); 65 void linux64_prepare_notes(struct thread *, struct note_info_list *, size_t *); 66 67 /* process emuldata flags */ 68 #define LINUX_XDEPR_REQUEUEOP 0x00000001 /* uses deprecated 69 futex REQUEUE op*/ 70 #define LINUX_XUNSUP_EPOLL 0x00000002 /* unsupported epoll events */ 71 #define LINUX_XUNSUP_FUTEXPIOP 0x00000004 /* uses unsupported pi futex */ 72 73 struct linux_pemuldata { 74 uint32_t flags; /* process emuldata flags */ 75 struct sx pem_sx; /* lock for this struct */ 76 uint32_t persona; /* process execution domain */ 77 uint32_t ptrace_flags; /* used by ptrace(2) */ 78 uint32_t oom_score_adj; /* /proc/self/oom_score_adj */ 79 uint32_t so_timestamp; /* requested timeval */ 80 uint32_t so_timestampns; /* requested timespec */ 81 }; 82 83 #define LINUX_PEM_XLOCK(p) sx_xlock(&(p)->pem_sx) 84 #define LINUX_PEM_XUNLOCK(p) sx_xunlock(&(p)->pem_sx) 85 #define LINUX_PEM_SLOCK(p) sx_slock(&(p)->pem_sx) 86 #define LINUX_PEM_SUNLOCK(p) sx_sunlock(&(p)->pem_sx) 87 88 struct linux_pemuldata *pem_find(struct proc *); 89 90 #endif /* !_LINUX_EMUL_H_ */ 91