1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * 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 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 flags; /* thread emuldata flags */ 46 int em_tid; /* thread id */ 47 48 struct linux_robust_list_head *robust_futexes; 49 }; 50 51 struct linux_emuldata *em_find(struct thread *); 52 53 int linux_exec_imgact_try(struct image_params *); 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 uint32_t ptrace_flags; /* used by ptrace(2) */ 74 }; 75 76 #define LINUX_PEM_XLOCK(p) sx_xlock(&(p)->pem_sx) 77 #define LINUX_PEM_XUNLOCK(p) sx_xunlock(&(p)->pem_sx) 78 #define LINUX_PEM_SLOCK(p) sx_slock(&(p)->pem_sx) 79 #define LINUX_PEM_SUNLOCK(p) sx_sunlock(&(p)->pem_sx) 80 81 struct linux_pemuldata *pem_find(struct proc *); 82 83 extern const int linux_errtbl[]; 84 85 #endif /* !_LINUX_EMUL_H_ */ 86