1 /*-
2 * Copyright (c) 1994 Christos Zoulas
3 * Copyright (c) 1995 Frank van der Linden
4 * Copyright (c) 1995 Scott Bartram
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
30 * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
31 * $FreeBSD: releng/11.1/sys/compat/linux/linux_util.h 316701 2017-04-11 12:49:25Z mmokhi $
32 */
33
34 #ifndef _LINUX_UTIL_H_
35 #define _LINUX_UTIL_H_
36
37 #include <vm/vm.h>
38 #include <vm/vm_param.h>
39 #include <vm/pmap.h>
40 #include <sys/exec.h>
41 #include <sys/sysent.h>
42 #include <sys/syslog.h>
43 #include <sys/cdefs.h>
44 #include <sys/uio.h>
45
46 MALLOC_DECLARE(M_LINUX);
47 MALLOC_DECLARE(M_EPOLL);
48 MALLOC_DECLARE(M_FUTEX);
49 MALLOC_DECLARE(M_FUTEX_WP);
50
51 extern const char linux_emul_path[];
52
53 int linux_emul_convpath(struct thread *, const char *, enum uio_seg, char **, int, int);
54
55 #define LCONVPATH_AT(td, upath, pathp, i, dfd) \
56 do { \
57 int _error; \
58 \
59 _error = linux_emul_convpath(td, upath, UIO_USERSPACE, \
60 pathp, i, dfd); \
61 if (*(pathp) == NULL) \
62 return (_error); \
63 } while (0)
64
65 #define LCONVPATH(td, upath, pathp, i) \
66 LCONVPATH_AT(td, upath, pathp, i, AT_FDCWD)
67
68 #define LCONVPATHEXIST(td, upath, pathp) LCONVPATH(td, upath, pathp, 0)
69 #define LCONVPATHEXIST_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 0, dfd)
70 #define LCONVPATHCREAT(td, upath, pathp) LCONVPATH(td, upath, pathp, 1)
71 #define LCONVPATHCREAT_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 1, dfd)
72 #define LFREEPATH(path) free(path, M_TEMP)
73
74 #define DUMMY(s) \
75 LIN_SDT_PROBE_DEFINE0(dummy, s, entry); \
76 LIN_SDT_PROBE_DEFINE0(dummy, s, not_implemented); \
77 LIN_SDT_PROBE_DEFINE1(dummy, s, return, "int"); \
78 int \
79 linux_ ## s(struct thread *td, struct linux_ ## s ## _args *args) \
80 { \
81 static pid_t pid; \
82 \
83 LIN_SDT_PROBE0(dummy, s, entry); \
84 \
85 if (pid != td->td_proc->p_pid) { \
86 linux_msg(td, "syscall %s not implemented", #s); \
87 LIN_SDT_PROBE0(dummy, s, not_implemented); \
88 pid = td->td_proc->p_pid; \
89 }; \
90 \
91 LIN_SDT_PROBE1(dummy, s, return, ENOSYS); \
92 return (ENOSYS); \
93 } \
94 struct __hack
95
96 /*
97 * This is for the syscalls that are not even yet implemented in Linux.
98 *
99 * They're marked as UNIMPL in syscall.master so it will
100 * have nosys record in linux_sysent[].
101 */
102 #define UNIMPLEMENTED(s)
103
104 void linux_msg(const struct thread *td, const char *fmt, ...)
105 __printflike(2, 3);
106
107 struct linux_device_handler {
108 char *bsd_driver_name;
109 char *linux_driver_name;
110 char *bsd_device_name;
111 char *linux_device_name;
112 int linux_major;
113 int linux_minor;
114 int linux_char_device;
115 };
116
117 int linux_device_register_handler(struct linux_device_handler *h);
118 int linux_device_unregister_handler(struct linux_device_handler *h);
119 char *linux_driver_get_name_dev(device_t dev);
120 int linux_driver_get_major_minor(const char *node, int *major, int *minor);
121 char *linux_get_char_devices(void);
122 void linux_free_get_char_devices(char *string);
123
124 #if defined(KTR)
125
126 #define KTR_LINUX KTR_SUBSYS
127 #define LINUX_CTRFMT(nm, fmt) #nm"("fmt")"
128
129 #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) do { \
130 CTR6(KTR_LINUX, LINUX_CTRFMT(f, m), \
131 p1, p2, p3, p4, p5, p6); \
132 } while (0)
133
134 #define LINUX_CTR(f) LINUX_CTR6(f, "", 0, 0, 0, 0, 0, 0)
135 #define LINUX_CTR0(f, m) LINUX_CTR6(f, m, 0, 0, 0, 0, 0, 0)
136 #define LINUX_CTR1(f, m, p1) LINUX_CTR6(f, m, p1, 0, 0, 0, 0, 0)
137 #define LINUX_CTR2(f, m, p1, p2) LINUX_CTR6(f, m, p1, p2, 0, 0, 0, 0)
138 #define LINUX_CTR3(f, m, p1, p2, p3) LINUX_CTR6(f, m, p1, p2, p3, 0, 0, 0)
139 #define LINUX_CTR4(f, m, p1, p2, p3, p4) LINUX_CTR6(f, m, p1, p2, p3, p4, 0, 0)
140 #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5) LINUX_CTR6(f, m, p1, p2, p3, p4, p5, 0)
141 #else
142 #define LINUX_CTR(f)
143 #define LINUX_CTR0(f, m)
144 #define LINUX_CTR1(f, m, p1)
145 #define LINUX_CTR2(f, m, p1, p2)
146 #define LINUX_CTR3(f, m, p1, p2, p3)
147 #define LINUX_CTR4(f, m, p1, p2, p3, p4)
148 #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5)
149 #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6)
150 #endif
151
152 #endif /* !_LINUX_UTIL_H_ */
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