1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2006 Roman Divacky 5 * Copyright (c) 2013 Dmitry Chagin 6 * All rights reserved. 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 * in this position and unchanged. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34 #ifndef _LINUX_EMUL_H_ 35 #define _LINUX_EMUL_H_ 36 37 /* 38 * modeled after similar structure in NetBSD 39 * this will be extended as we need more functionality 40 */ 41 struct linux_emuldata { 42 int *child_set_tid; /* in clone(): Child's TID to set on clone */ 43 int *child_clear_tid;/* in clone(): Child's TID to clear on exit */ 44 45 int pdeath_signal; /* parent death signal */ 46 int flags; /* thread emuldata flags */ 47 int em_tid; /* thread id */ 48 49 struct linux_robust_list_head *robust_futexes; 50 }; 51 52 struct linux_emuldata *em_find(struct thread *); 53 54 void linux_proc_init(struct thread *, struct thread *, int); 55 void linux_proc_exit(void *, struct proc *); 56 void linux_schedtail(struct thread *); 57 void linux_proc_exec(void *, struct proc *, struct image_params *); 58 void linux_thread_dtor(void *arg __unused, struct thread *); 59 void linux_thread_detach(struct thread *); 60 int linux_common_execve(struct thread *, struct image_args *); 61 62 /* process emuldata flags */ 63 #define LINUX_XDEPR_REQUEUEOP 0x00000001 /* uses deprecated 64 futex REQUEUE op*/ 65 #define LINUX_XUNSUP_EPOLL 0x00000002 /* unsupported epoll events */ 66 #define LINUX_XUNSUP_FUTEXPIOP 0x00000004 /* uses unsupported pi futex */ 67 68 struct linux_pemuldata { 69 uint32_t flags; /* process emuldata flags */ 70 struct sx pem_sx; /* lock for this struct */ 71 void *epoll; /* epoll data */ 72 uint32_t persona; /* process execution domain */ 73 }; 74 75 #define LINUX_PEM_XLOCK(p) sx_xlock(&(p)->pem_sx) 76 #define LINUX_PEM_XUNLOCK(p) sx_xunlock(&(p)->pem_sx) 77 #define LINUX_PEM_SLOCK(p) sx_slock(&(p)->pem_sx) 78 #define LINUX_PEM_SUNLOCK(p) sx_sunlock(&(p)->pem_sx) 79 80 struct linux_pemuldata *pem_find(struct proc *); 81 82 #endif /* !_LINUX_EMUL_H_ */ 83