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_ */
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