1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2015 Dmitry Chagin <dchagin@FreeBSD.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #ifndef _LINUX_MI_H_
29 #define _LINUX_MI_H_
30
31 typedef uint32_t l_dev_t;
32
33 static __inline int
linux_decode_major(l_dev_t _dev)34 linux_decode_major(l_dev_t _dev)
35 {
36
37 return ((_dev & 0xfff00) >> 8);
38 }
39
40 static __inline int
linux_decode_minor(l_dev_t _dev)41 linux_decode_minor(l_dev_t _dev)
42 {
43
44 return ((_dev & 0xff) | ((_dev & 0xfff00000) >> 12));
45 }
46
47 static __inline dev_t
linux_decode_dev(l_dev_t _dev)48 linux_decode_dev(l_dev_t _dev)
49 {
50
51 return (makedev(linux_decode_major(_dev), linux_decode_minor(_dev)));
52 }
53
54 /*
55 * Private Brandinfo flags
56 */
57 #define LINUX_BI_FUTEX_REQUEUE 0x01000000
58
59 /*
60 * poll()
61 */
62 #define LINUX_POLLIN 0x0001
63 #define LINUX_POLLPRI 0x0002
64 #define LINUX_POLLOUT 0x0004
65 #define LINUX_POLLERR 0x0008
66 #define LINUX_POLLHUP 0x0010
67 #define LINUX_POLLNVAL 0x0020
68 #define LINUX_POLLRDNORM 0x0040
69 #define LINUX_POLLRDBAND 0x0080
70 #define LINUX_POLLWRNORM 0x0100
71 #define LINUX_POLLWRBAND 0x0200
72 #define LINUX_POLLMSG 0x0400
73 #define LINUX_POLLREMOVE 0x1000
74 #define LINUX_POLLRDHUP 0x2000
75
76 #define LINUX_IFHWADDRLEN 6
77 #define LINUX_IFNAMSIZ 16
78
79 struct l_sockaddr {
80 unsigned short sa_family;
81 char sa_data[14];
82 };
83
84 #define LINUX_ARPHRD_ETHER 1
85 #define LINUX_ARPHRD_LOOPBACK 772
86 #define LINUX_ARPHRD_SIT 776
87
88 /*
89 * Supported address families
90 */
91 #define LINUX_AF_UNSPEC 0
92 #define LINUX_AF_UNIX 1
93 #define LINUX_AF_INET 2
94 #define LINUX_AF_AX25 3
95 #define LINUX_AF_IPX 4
96 #define LINUX_AF_APPLETALK 5
97 #define LINUX_AF_INET6 10
98 #define LINUX_AF_NETLINK 16
99
100 #define LINUX_NETLINK_ROUTE 0
101 #define LINUX_NETLINK_SOCK_DIAG 4
102 #define LINUX_NETLINK_NFLOG 5
103 #define LINUX_NETLINK_SELINUX 7
104 #define LINUX_NETLINK_AUDIT 9
105 #define LINUX_NETLINK_FIB_LOOKUP 10
106 #define LINUX_NETLINK_NETFILTER 12
107 #define LINUX_NETLINK_KOBJECT_UEVENT 15
108
109 /*
110 * net device flags
111 */
112 #define LINUX_IFF_UP 0x0001
113 #define LINUX_IFF_BROADCAST 0x0002
114 #define LINUX_IFF_DEBUG 0x0004
115 #define LINUX_IFF_LOOPBACK 0x0008
116 #define LINUX_IFF_POINTOPOINT 0x0010
117 #define LINUX_IFF_NOTRAILERS 0x0020
118 #define LINUX_IFF_RUNNING 0x0040
119 #define LINUX_IFF_NOARP 0x0080
120 #define LINUX_IFF_PROMISC 0x0100
121 #define LINUX_IFF_ALLMULTI 0x0200
122 #define LINUX_IFF_MASTER 0x0400
123 #define LINUX_IFF_SLAVE 0x0800
124 #define LINUX_IFF_MULTICAST 0x1000
125 #define LINUX_IFF_PORTSEL 0x2000
126 #define LINUX_IFF_AUTOMEDIA 0x4000
127 #define LINUX_IFF_DYNAMIC 0x8000
128 /* Volatile (netlink / ifinfomsg); not representable in ifr_flags short */
129 #define LINUX_IFF_LOWER_UP 0x10000
130 #define LINUX_IFF_DORMANT 0x20000
131
132 /* sigaltstack */
133 #define LINUX_SS_ONSTACK 1
134 #define LINUX_SS_DISABLE 2
135
136 int linux_to_bsd_sigaltstack(int lsa);
137 int bsd_to_linux_sigaltstack(int bsa);
138
139 /* sigset */
140 typedef struct {
141 uint64_t __mask;
142 } l_sigset_t;
143
144 /* primitives to manipulate sigset_t */
145 #define LINUX_SIGEMPTYSET(set) (set).__mask = 0
146 #define LINUX_SIGISMEMBER(set, sig) (1ULL & ((set).__mask >> _SIG_IDX(sig)))
147 #define LINUX_SIGADDSET(set, sig) (set).__mask |= 1ULL << _SIG_IDX(sig)
148
149 void linux_to_bsd_sigset(l_sigset_t *, sigset_t *);
150 void bsd_to_linux_sigset(sigset_t *, l_sigset_t *);
151
152 /* signaling */
153 #define LINUX_SIGHUP 1
154 #define LINUX_SIGINT 2
155 #define LINUX_SIGQUIT 3
156 #define LINUX_SIGILL 4
157 #define LINUX_SIGTRAP 5
158 #define LINUX_SIGABRT 6
159 #define LINUX_SIGIOT LINUX_SIGABRT
160 #define LINUX_SIGBUS 7
161 #define LINUX_SIGFPE 8
162 #define LINUX_SIGKILL 9
163 #define LINUX_SIGUSR1 10
164 #define LINUX_SIGSEGV 11
165 #define LINUX_SIGUSR2 12
166 #define LINUX_SIGPIPE 13
167 #define LINUX_SIGALRM 14
168 #define LINUX_SIGTERM 15
169 #define LINUX_SIGSTKFLT 16
170 #define LINUX_SIGCHLD 17
171 #define LINUX_SIGCONT 18
172 #define LINUX_SIGSTOP 19
173 #define LINUX_SIGTSTP 20
174 #define LINUX_SIGTTIN 21
175 #define LINUX_SIGTTOU 22
176 #define LINUX_SIGURG 23
177 #define LINUX_SIGXCPU 24
178 #define LINUX_SIGXFSZ 25
179 #define LINUX_SIGVTALRM 26
180 #define LINUX_SIGPROF 27
181 #define LINUX_SIGWINCH 28
182 #define LINUX_SIGIO 29
183 #define LINUX_SIGPOLL LINUX_SIGIO
184 #define LINUX_SIGPWR 30
185 #define LINUX_SIGSYS 31
186 #define LINUX_SIGTBLSZ 31
187 #define LINUX_SIGRTMIN 32
188 #define LINUX_SIGRTMAX 64
189
190 #define LINUX_SIG_VALID(sig) ((sig) <= LINUX_SIGRTMAX && (sig) > 0)
191
192 int linux_to_bsd_signal(int sig);
193 int bsd_to_linux_signal(int sig);
194
195 /* sigprocmask actions */
196 #define LINUX_SIG_BLOCK 0
197 #define LINUX_SIG_UNBLOCK 1
198 #define LINUX_SIG_SETMASK 2
199
200 void linux_dev_shm_create(void);
201 void linux_dev_shm_destroy(void);
202
203 /*
204 * mask=0 is not sensible for this application, so it will be taken to mean
205 * a mask equivalent to the value. Otherwise, (word & mask) == value maps to
206 * (word & ~mask) | value in a bitfield for the platform we're converting to.
207 */
208 struct bsd_to_linux_bitmap {
209 int bsd_mask;
210 int bsd_value;
211 int linux_mask;
212 int linux_value;
213 };
214
215 int bsd_to_linux_bits_(int value, struct bsd_to_linux_bitmap *bitmap,
216 size_t mapcnt, int no_value);
217 int linux_to_bsd_bits_(int value, struct bsd_to_linux_bitmap *bitmap,
218 size_t mapcnt, int no_value);
219
220 /*
221 * These functions are used for simplification of BSD <-> Linux bit conversions.
222 * Given `value`, a bit field, these functions will walk the given bitmap table
223 * and set the appropriate bits for the target platform. If any bits were
224 * successfully converted, then the return value is the equivalent of value
225 * represented with the bit values appropriate for the target platform.
226 * Otherwise, the value supplied as `no_value` is returned.
227 */
228 #define bsd_to_linux_bits(_val, _bmap, _noval) \
229 bsd_to_linux_bits_((_val), (_bmap), nitems((_bmap)), (_noval))
230 #define linux_to_bsd_bits(_val, _bmap, _noval) \
231 linux_to_bsd_bits_((_val), (_bmap), nitems((_bmap)), (_noval))
232
233 /*
234 * Easy mapping helpers. BITMAP_EASY_LINUX represents a single bit to be
235 * translated, and the FreeBSD and Linux values are supplied. BITMAP_1t1_LINUX
236 * is the extreme version of this, where not only is it a single bit, but the
237 * name of the macro used to represent the Linux version of a bit literally has
238 * LINUX_ prepended to the normal name.
239 */
240 #define BITMAP_EASY_LINUX(_name, _linux_name) \
241 { \
242 .bsd_value = (_name), \
243 .linux_value = (_linux_name), \
244 }
245 #define BITMAP_1t1_LINUX(_name) BITMAP_EASY_LINUX(_name, LINUX_##_name)
246
247 int bsd_to_linux_errno(int error);
248 void linux_check_errtbl(void);
249
250 #define STATX_BASIC_STATS 0x07ff
251 #define STATX_BTIME 0x0800
252 #define STATX_ALL 0x0fff
253
254 #define STATX_ATTR_COMPRESSED 0x0004
255 #define STATX_ATTR_IMMUTABLE 0x0010
256 #define STATX_ATTR_APPEND 0x0020
257 #define STATX_ATTR_NODUMP 0x0040
258 #define STATX_ATTR_ENCRYPTED 0x0800
259 #define STATX_ATTR_AUTOMOUNT 0x1000
260
261 struct l_statx_timestamp {
262 int64_t tv_sec;
263 int32_t tv_nsec;
264 int32_t __spare0;
265 };
266
267 struct l_statx {
268 uint32_t stx_mask;
269 uint32_t stx_blksize;
270 uint64_t stx_attributes;
271 uint32_t stx_nlink;
272 uint32_t stx_uid;
273 uint32_t stx_gid;
274 uint16_t stx_mode;
275 uint16_t __spare0[1];
276 uint64_t stx_ino;
277 uint64_t stx_size;
278 uint64_t stx_blocks;
279 uint64_t stx_attributes_mask;
280 struct l_statx_timestamp stx_atime;
281 struct l_statx_timestamp stx_btime;
282 struct l_statx_timestamp stx_ctime;
283 struct l_statx_timestamp stx_mtime;
284 uint32_t stx_rdev_major;
285 uint32_t stx_rdev_minor;
286 uint32_t stx_dev_major;
287 uint32_t stx_dev_minor;
288 uint64_t stx_mnt_id;
289 uint64_t __spare2[13];
290 };
291
292 /*
293 * statfs f_flags
294 */
295 #define LINUX_ST_RDONLY 0x0001
296 #define LINUX_ST_NOSUID 0x0002
297 #define LINUX_ST_NODEV 0x0004 /* No native analogue */
298 #define LINUX_ST_NOEXEC 0x0008
299 #define LINUX_ST_SYNCHRONOUS 0x0010
300 #define LINUX_ST_VALID 0x0020
301 #define LINUX_ST_MANDLOCK 0x0040 /* No native analogue */
302 #define LINUX_ST_NOATIME 0x0400
303 #define LINUX_ST_NODIRATIME 0x0800 /* No native analogue */
304 #define LINUX_ST_RELATIME 0x1000 /* No native analogue */
305 #define LINUX_ST_NOSYMFOLLOW 0x2000
306
307 #ifndef lower_32_bits
308 #define lower_32_bits(n) ((uint32_t)((n) & 0xffffffff))
309 #endif
310
311 #ifdef KTRACE
312 #define linux_ktrsigset(s, l) \
313 ktrstruct("l_sigset_t", (s), l)
314 #endif
315
316 void linux_ifnet_init(void);
317 void linux_ifnet_uninit(void);
318 void linux_netlink_register(void);
319 void linux_netlink_deregister(void);
320
321 #endif /* _LINUX_MI_H_ */
322