xref: /freebsd/sys/i386/linux/linux.h (revision 4ce386ff25d77954b8cfa11534f632172e848244)
1 /*-
2  * Copyright (c) 1994-1996 Søren Schmidt
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer
10  *    in this position and unchanged.
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  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #ifndef _I386_LINUX_H_
32 #define	_I386_LINUX_H_
33 
34 #include <sys/signal.h>	/* for sigval union */
35 
36 #include <i386/linux/linux_syscall.h>
37 
38 /*
39  * debugging support
40  */
41 extern u_char linux_debug_map[];
42 #define	ldebug(name)	isclr(linux_debug_map, LINUX_SYS_linux_ ## name)
43 #define	ARGS(nm, fmt)	"linux(%ld): "#nm"("fmt")\n", (long)td->td_proc->p_pid
44 #define	LMSG(fmt)	"linux(%ld): "fmt"\n", (long)td->td_proc->p_pid
45 #define	LINUX_DTRACE	linuxulator
46 
47 #ifdef MALLOC_DECLARE
48 MALLOC_DECLARE(M_LINUX);
49 #endif
50 
51 #define	LINUX_SHAREDPAGE	(VM_MAXUSER_ADDRESS - PAGE_SIZE)
52 #define	LINUX_USRSTACK		LINUX_SHAREDPAGE
53 
54 #define	PTRIN(v)	(void *)(v)
55 #define	PTROUT(v)	(l_uintptr_t)(v)
56 
57 #define	CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
58 #define	CP2(src,dst,sfld,dfld) do { (dst).dfld = (src).sfld; } while (0)
59 #define	PTRIN_CP(src,dst,fld) \
60 	do { (dst).fld = PTRIN((src).fld); } while (0)
61 
62 /*
63  * Provide a separate set of types for the Linux types.
64  */
65 typedef int		l_int;
66 typedef int32_t		l_long;
67 typedef int64_t		l_longlong;
68 typedef short		l_short;
69 typedef unsigned int	l_uint;
70 typedef uint32_t	l_ulong;
71 typedef uint64_t	l_ulonglong;
72 typedef unsigned short	l_ushort;
73 
74 typedef char		*l_caddr_t;
75 typedef l_ulong		l_uintptr_t;
76 typedef l_long		l_clock_t;
77 typedef l_int		l_daddr_t;
78 typedef l_ushort	l_dev_t;
79 typedef l_uint		l_gid_t;
80 typedef l_ushort	l_gid16_t;
81 typedef l_ulong		l_ino_t;
82 typedef l_int		l_key_t;
83 typedef l_longlong	l_loff_t;
84 typedef l_ushort	l_mode_t;
85 typedef l_long		l_off_t;
86 typedef l_int		l_pid_t;
87 typedef l_uint		l_size_t;
88 typedef l_long		l_suseconds_t;
89 typedef l_long		l_time_t;
90 typedef l_uint		l_uid_t;
91 typedef l_ushort	l_uid16_t;
92 typedef l_int		l_timer_t;
93 typedef l_int		l_mqd_t;
94 
95 typedef struct {
96 	l_int		val[2];
97 } l_fsid_t;
98 
99 typedef struct {
100 	l_time_t	tv_sec;
101 	l_suseconds_t	tv_usec;
102 } l_timeval;
103 
104 #define	l_fd_set	fd_set
105 
106 /*
107  * Miscellaneous
108  */
109 #define LINUX_AT_COUNT		16	/* Count of used aux entry types.
110 					 * Keep this synchronized with
111 					 * elf_linux_fixup() code.
112 					 */
113 struct l___sysctl_args
114 {
115 	l_int		*name;
116 	l_int		nlen;
117 	void		*oldval;
118 	l_size_t	*oldlenp;
119 	void		*newval;
120 	l_size_t	newlen;
121 	l_ulong		__spare[4];
122 };
123 
124 /* Resource limits */
125 #define	LINUX_RLIMIT_CPU	0
126 #define	LINUX_RLIMIT_FSIZE	1
127 #define	LINUX_RLIMIT_DATA	2
128 #define	LINUX_RLIMIT_STACK	3
129 #define	LINUX_RLIMIT_CORE	4
130 #define	LINUX_RLIMIT_RSS	5
131 #define	LINUX_RLIMIT_NPROC	6
132 #define	LINUX_RLIMIT_NOFILE	7
133 #define	LINUX_RLIMIT_MEMLOCK	8
134 #define	LINUX_RLIMIT_AS		9	/* Address space limit */
135 
136 #define	LINUX_RLIM_NLIMITS	10
137 
138 struct l_rlimit {
139 	l_ulong rlim_cur;
140 	l_ulong rlim_max;
141 };
142 
143 /* mmap options */
144 #define	LINUX_MAP_SHARED	0x0001
145 #define	LINUX_MAP_PRIVATE	0x0002
146 #define	LINUX_MAP_FIXED		0x0010
147 #define	LINUX_MAP_ANON		0x0020
148 #define	LINUX_MAP_GROWSDOWN	0x0100
149 
150 struct l_mmap_argv {
151 	l_uintptr_t	addr;
152 	l_size_t	len;
153 	l_int		prot;
154 	l_int		flags;
155 	l_int		fd;
156 	l_off_t		pgoff;
157 } __packed;
158 
159 /*
160  * stat family of syscalls
161  */
162 struct l_timespec {
163 	l_time_t	tv_sec;
164 	l_long		tv_nsec;
165 };
166 
167 struct l_newstat {
168 	l_ushort	st_dev;
169 	l_ushort	__pad1;
170 	l_ulong		st_ino;
171 	l_ushort	st_mode;
172 	l_ushort	st_nlink;
173 	l_ushort	st_uid;
174 	l_ushort	st_gid;
175 	l_ushort	st_rdev;
176 	l_ushort	__pad2;
177 	l_ulong		st_size;
178 	l_ulong		st_blksize;
179 	l_ulong		st_blocks;
180 	struct l_timespec	st_atim;
181 	struct l_timespec	st_mtim;
182 	struct l_timespec	st_ctim;
183 	l_ulong		__unused4;
184 	l_ulong		__unused5;
185 };
186 
187 struct l_stat {
188 	l_ushort	st_dev;
189 	l_ulong		st_ino;
190 	l_ushort	st_mode;
191 	l_ushort	st_nlink;
192 	l_ushort	st_uid;
193 	l_ushort	st_gid;
194 	l_ushort	st_rdev;
195 	l_long		st_size;
196 	struct l_timespec	st_atim;
197 	struct l_timespec	st_mtim;
198 	struct l_timespec	st_ctim;
199 	l_long		st_blksize;
200 	l_long		st_blocks;
201 	l_ulong		st_flags;
202 	l_ulong		st_gen;
203 };
204 
205 struct l_stat64 {
206 	l_ushort	st_dev;
207 	u_char		__pad0[10];
208 	l_ulong		__st_ino;
209 	l_uint		st_mode;
210 	l_uint		st_nlink;
211 	l_ulong		st_uid;
212 	l_ulong		st_gid;
213 	l_ushort	st_rdev;
214 	u_char		__pad3[10];
215 	l_longlong	st_size;
216 	l_ulong		st_blksize;
217 	l_ulong		st_blocks;
218 	l_ulong		__pad4;
219 	struct l_timespec	st_atim;
220 	struct l_timespec	st_mtim;
221 	struct l_timespec	st_ctim;
222 	l_ulonglong	st_ino;
223 };
224 
225 struct l_statfs64 {
226         l_int           f_type;
227         l_int           f_bsize;
228         uint64_t        f_blocks;
229         uint64_t        f_bfree;
230         uint64_t        f_bavail;
231         uint64_t        f_files;
232         uint64_t        f_ffree;
233         l_fsid_t        f_fsid;
234         l_int           f_namelen;
235         l_int           f_spare[6];
236 };
237 
238 /*
239  * Signalling
240  */
241 #define	LINUX_SIGHUP		1
242 #define	LINUX_SIGINT		2
243 #define	LINUX_SIGQUIT		3
244 #define	LINUX_SIGILL		4
245 #define	LINUX_SIGTRAP		5
246 #define	LINUX_SIGABRT		6
247 #define	LINUX_SIGIOT		LINUX_SIGABRT
248 #define	LINUX_SIGBUS		7
249 #define	LINUX_SIGFPE		8
250 #define	LINUX_SIGKILL		9
251 #define	LINUX_SIGUSR1		10
252 #define	LINUX_SIGSEGV		11
253 #define	LINUX_SIGUSR2		12
254 #define	LINUX_SIGPIPE		13
255 #define	LINUX_SIGALRM		14
256 #define	LINUX_SIGTERM		15
257 #define	LINUX_SIGSTKFLT		16
258 #define	LINUX_SIGCHLD		17
259 #define	LINUX_SIGCONT		18
260 #define	LINUX_SIGSTOP		19
261 #define	LINUX_SIGTSTP		20
262 #define	LINUX_SIGTTIN		21
263 #define	LINUX_SIGTTOU		22
264 #define	LINUX_SIGURG		23
265 #define	LINUX_SIGXCPU		24
266 #define	LINUX_SIGXFSZ		25
267 #define	LINUX_SIGVTALRM		26
268 #define	LINUX_SIGPROF		27
269 #define	LINUX_SIGWINCH		28
270 #define	LINUX_SIGIO		29
271 #define	LINUX_SIGPOLL		LINUX_SIGIO
272 #define	LINUX_SIGPWR		30
273 #define	LINUX_SIGSYS		31
274 #define	LINUX_SIGRTMIN		32
275 
276 #define	LINUX_SIGTBLSZ		31
277 #define	LINUX_NSIG_WORDS	2
278 #define	LINUX_NBPW		32
279 #define	LINUX_NSIG		(LINUX_NBPW * LINUX_NSIG_WORDS)
280 
281 /* sigaction flags */
282 #define	LINUX_SA_NOCLDSTOP	0x00000001
283 #define	LINUX_SA_NOCLDWAIT	0x00000002
284 #define	LINUX_SA_SIGINFO	0x00000004
285 #define	LINUX_SA_RESTORER	0x04000000
286 #define	LINUX_SA_ONSTACK	0x08000000
287 #define	LINUX_SA_RESTART	0x10000000
288 #define	LINUX_SA_INTERRUPT	0x20000000
289 #define	LINUX_SA_NOMASK		0x40000000
290 #define	LINUX_SA_ONESHOT	0x80000000
291 
292 /* sigprocmask actions */
293 #define	LINUX_SIG_BLOCK		0
294 #define	LINUX_SIG_UNBLOCK	1
295 #define	LINUX_SIG_SETMASK	2
296 
297 /* sigset_t macros */
298 #define	LINUX_SIGEMPTYSET(set)		(set).__bits[0] = (set).__bits[1] = 0
299 #define	LINUX_SIGISMEMBER(set, sig)	SIGISMEMBER(set, sig)
300 #define	LINUX_SIGADDSET(set, sig)	SIGADDSET(set, sig)
301 
302 /* sigaltstack */
303 #define	LINUX_MINSIGSTKSZ	2048
304 #define	LINUX_SS_ONSTACK	1
305 #define	LINUX_SS_DISABLE	2
306 
307 int linux_to_bsd_sigaltstack(int lsa);
308 int bsd_to_linux_sigaltstack(int bsa);
309 
310 typedef void	(*l_handler_t)(l_int);
311 typedef l_ulong	l_osigset_t;
312 
313 typedef struct {
314 	l_uint	__bits[LINUX_NSIG_WORDS];
315 } l_sigset_t;
316 
317 typedef struct {
318 	l_handler_t	lsa_handler;
319 	l_osigset_t	lsa_mask;
320 	l_ulong		lsa_flags;
321 	void	(*lsa_restorer)(void);
322 } l_osigaction_t;
323 
324 typedef struct {
325 	l_handler_t	lsa_handler;
326 	l_ulong		lsa_flags;
327 	void	(*lsa_restorer)(void);
328 	l_sigset_t	lsa_mask;
329 } l_sigaction_t;
330 
331 typedef struct {
332 	void		*ss_sp;
333 	l_int		ss_flags;
334 	l_size_t	ss_size;
335 } l_stack_t;
336 
337 /* The Linux sigcontext, pretty much a standard 386 trapframe. */
338 struct l_sigcontext {
339 	l_int		sc_gs;
340 	l_int		sc_fs;
341 	l_int		sc_es;
342 	l_int		sc_ds;
343 	l_int		sc_edi;
344 	l_int		sc_esi;
345 	l_int		sc_ebp;
346 	l_int		sc_esp;
347 	l_int		sc_ebx;
348 	l_int		sc_edx;
349 	l_int		sc_ecx;
350 	l_int		sc_eax;
351 	l_int		sc_trapno;
352 	l_int		sc_err;
353 	l_int		sc_eip;
354 	l_int		sc_cs;
355 	l_int		sc_eflags;
356 	l_int		sc_esp_at_signal;
357 	l_int		sc_ss;
358 	l_int		sc_387;
359 	l_int		sc_mask;
360 	l_int		sc_cr2;
361 };
362 
363 struct l_ucontext {
364 	l_ulong		uc_flags;
365 	void		*uc_link;
366 	l_stack_t	uc_stack;
367 	struct l_sigcontext	uc_mcontext;
368 	l_sigset_t	uc_sigmask;
369 };
370 
371 #define	LINUX_SI_MAX_SIZE	128
372 #define	LINUX_SI_PAD_SIZE	((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3)
373 
374 typedef union l_sigval {
375 	l_int		sival_int;
376 	l_uintptr_t	sival_ptr;
377 } l_sigval_t;
378 
379 typedef struct l_siginfo {
380 	l_int		lsi_signo;
381 	l_int		lsi_errno;
382 	l_int		lsi_code;
383 	union {
384 		l_int	_pad[LINUX_SI_PAD_SIZE];
385 
386 		struct {
387 			l_pid_t		_pid;
388 			l_uid_t		_uid;
389 		} _kill;
390 
391 		struct {
392 			l_timer_t	_tid;
393 			l_int		_overrun;
394 			char		_pad[sizeof(l_uid_t) - sizeof(l_int)];
395 			l_sigval_t	_sigval;
396 			l_int		_sys_private;
397 		} _timer;
398 
399 		struct {
400 			l_pid_t		_pid;		/* sender's pid */
401 			l_uid_t		_uid;		/* sender's uid */
402 			l_sigval_t	_sigval;
403 		} _rt;
404 
405 		struct {
406 			l_pid_t		_pid;		/* which child */
407 			l_uid_t		_uid;		/* sender's uid */
408 			l_int		_status;	/* exit code */
409 			l_clock_t	_utime;
410 			l_clock_t	_stime;
411 		} _sigchld;
412 
413 		struct {
414 			l_uintptr_t	_addr;	/* Faulting insn/memory ref. */
415 		} _sigfault;
416 
417 		struct {
418 			l_long		_band;	/* POLL_IN,POLL_OUT,POLL_MSG */
419 			l_int		_fd;
420 		} _sigpoll;
421 	} _sifields;
422 } l_siginfo_t;
423 
424 #define	lsi_pid		_sifields._kill._pid
425 #define	lsi_uid		_sifields._kill._uid
426 #define	lsi_tid		_sifields._timer._tid
427 #define	lsi_overrun	_sifields._timer._overrun
428 #define	lsi_sys_private	_sifields._timer._sys_private
429 #define	lsi_status	_sifields._sigchld._status
430 #define	lsi_utime	_sifields._sigchld._utime
431 #define	lsi_stime	_sifields._sigchld._stime
432 #define	lsi_value	_sifields._rt._sigval
433 #define	lsi_int		_sifields._rt._sigval.sival_int
434 #define	lsi_ptr		_sifields._rt._sigval.sival_ptr
435 #define	lsi_addr	_sifields._sigfault._addr
436 #define	lsi_band	_sifields._sigpoll._band
437 #define	lsi_fd		_sifields._sigpoll._fd
438 
439 struct l_fpreg {
440 	u_int16_t	significand[4];
441 	u_int16_t	exponent;
442 };
443 
444 struct l_fpxreg {
445 	u_int16_t	significand[4];
446 	u_int16_t	exponent;
447 	u_int16_t	padding[3];
448 };
449 
450 struct l_xmmreg {
451 	u_int32_t	element[4];
452 };
453 
454 struct l_fpstate {
455 	/* Regular FPU environment */
456 	u_int32_t		cw;
457 	u_int32_t		sw;
458 	u_int32_t		tag;
459 	u_int32_t		ipoff;
460 	u_int32_t		cssel;
461 	u_int32_t		dataoff;
462 	u_int32_t		datasel;
463 	struct l_fpreg		_st[8];
464 	u_int16_t		status;
465 	u_int16_t		magic;		/* 0xffff = regular FPU data */
466 
467 	/* FXSR FPU environment */
468 	u_int32_t		_fxsr_env[6];	/* env is ignored. */
469 	u_int32_t		mxcsr;
470 	u_int32_t		reserved;
471 	struct l_fpxreg		_fxsr_st[8];	/* reg data is ignored. */
472 	struct l_xmmreg		_xmm[8];
473 	u_int32_t		padding[56];
474 };
475 
476 /*
477  * We make the stack look like Linux expects it when calling a signal
478  * handler, but use the BSD way of calling the handler and sigreturn().
479  * This means that we need to pass the pointer to the handler too.
480  * It is appended to the frame to not interfere with the rest of it.
481  */
482 struct l_sigframe {
483 	l_int			sf_sig;
484 	struct l_sigcontext	sf_sc;
485 	struct l_fpstate	sf_fpstate;
486 	l_uint			sf_extramask[LINUX_NSIG_WORDS-1];
487 	l_handler_t		sf_handler;
488 };
489 
490 struct l_rt_sigframe {
491 	l_int			sf_sig;
492 	l_siginfo_t 		*sf_siginfo;
493 	struct l_ucontext	*sf_ucontext;
494 	l_siginfo_t		sf_si;
495 	struct l_ucontext 	sf_sc;
496 	l_handler_t 		sf_handler;
497 };
498 
499 extern struct sysentvec linux_sysvec;
500 extern struct sysentvec elf_linux_sysvec;
501 
502 /*
503  * open/fcntl flags
504  */
505 #define	LINUX_O_RDONLY		00000000
506 #define	LINUX_O_WRONLY		00000001
507 #define	LINUX_O_RDWR		00000002
508 #define	LINUX_O_ACCMODE		00000003
509 #define	LINUX_O_CREAT		00000100
510 #define	LINUX_O_EXCL		00000200
511 #define	LINUX_O_NOCTTY		00000400
512 #define	LINUX_O_TRUNC		00001000
513 #define	LINUX_O_APPEND		00002000
514 #define	LINUX_O_NONBLOCK	00004000
515 #define	LINUX_O_NDELAY		LINUX_O_NONBLOCK
516 #define	LINUX_O_SYNC		00010000
517 #define	LINUX_FASYNC		00020000
518 #define	LINUX_O_DIRECT		00040000	/* Direct disk access hint */
519 #define	LINUX_O_LARGEFILE	00100000
520 #define	LINUX_O_DIRECTORY	00200000	/* Must be a directory */
521 #define	LINUX_O_NOFOLLOW	00400000	/* Do not follow links */
522 #define	LINUX_O_NOATIME		01000000
523 #define	LINUX_O_CLOEXEC		02000000
524 
525 #define	LINUX_F_DUPFD		0
526 #define	LINUX_F_GETFD		1
527 #define	LINUX_F_SETFD		2
528 #define	LINUX_F_GETFL		3
529 #define	LINUX_F_SETFL		4
530 #define	LINUX_F_GETLK		5
531 #define	LINUX_F_SETLK		6
532 #define	LINUX_F_SETLKW		7
533 #define	LINUX_F_SETOWN		8
534 #define	LINUX_F_GETOWN		9
535 
536 #define	LINUX_F_GETLK64		12
537 #define	LINUX_F_SETLK64		13
538 #define	LINUX_F_SETLKW64	14
539 
540 #define	LINUX_F_RDLCK		0
541 #define	LINUX_F_WRLCK		1
542 #define	LINUX_F_UNLCK		2
543 
544 union l_semun {
545 	l_int		val;
546 	struct l_semid_ds	*buf;
547 	l_ushort	*array;
548 	struct l_seminfo	*__buf;
549 	void		*__pad;
550 };
551 
552 /*
553  * Socket defines
554  */
555 #define	LINUX_SOL_SOCKET	1
556 #define	LINUX_SOL_IP		0
557 #define	LINUX_SOL_IPX		256
558 #define	LINUX_SOL_AX25		257
559 #define	LINUX_SOL_TCP		6
560 #define	LINUX_SOL_UDP		17
561 
562 #define	LINUX_SO_DEBUG		1
563 #define	LINUX_SO_REUSEADDR	2
564 #define	LINUX_SO_TYPE		3
565 #define	LINUX_SO_ERROR		4
566 #define	LINUX_SO_DONTROUTE	5
567 #define	LINUX_SO_BROADCAST	6
568 #define	LINUX_SO_SNDBUF		7
569 #define	LINUX_SO_RCVBUF		8
570 #define	LINUX_SO_KEEPALIVE	9
571 #define	LINUX_SO_OOBINLINE	10
572 #define	LINUX_SO_NO_CHECK	11
573 #define	LINUX_SO_PRIORITY	12
574 #define	LINUX_SO_LINGER		13
575 #define	LINUX_SO_PEERCRED	17
576 #define	LINUX_SO_RCVLOWAT	18
577 #define	LINUX_SO_SNDLOWAT	19
578 #define	LINUX_SO_RCVTIMEO	20
579 #define	LINUX_SO_SNDTIMEO	21
580 #define	LINUX_SO_TIMESTAMP	29
581 #define	LINUX_SO_ACCEPTCONN	30
582 
583 struct l_sockaddr {
584 	l_ushort	sa_family;
585 	char		sa_data[14];
586 };
587 
588 struct l_msghdr {
589 	l_uintptr_t	msg_name;
590 	l_int		msg_namelen;
591 	l_uintptr_t	msg_iov;
592 	l_size_t	msg_iovlen;
593 	l_uintptr_t	msg_control;
594 	l_size_t	msg_controllen;
595 	l_uint		msg_flags;
596 };
597 
598 struct l_cmsghdr {
599 	l_size_t	cmsg_len;
600 	l_int		cmsg_level;
601 	l_int		cmsg_type;
602 };
603 
604 struct l_ifmap {
605 	l_ulong		mem_start;
606 	l_ulong		mem_end;
607 	l_ushort	base_addr;
608 	u_char		irq;
609 	u_char		dma;
610 	u_char		port;
611 };
612 
613 #define	LINUX_IFHWADDRLEN	6
614 #define	LINUX_IFNAMSIZ		16
615 
616 struct l_ifreq {
617 	union {
618 		char	ifrn_name[LINUX_IFNAMSIZ];
619 	} ifr_ifrn;
620 
621 	union {
622 		struct l_sockaddr	ifru_addr;
623 		struct l_sockaddr	ifru_dstaddr;
624 		struct l_sockaddr	ifru_broadaddr;
625 		struct l_sockaddr	ifru_netmask;
626 		struct l_sockaddr	ifru_hwaddr;
627 		l_short		ifru_flags[1];
628 		l_int		ifru_metric;
629 		l_int		ifru_mtu;
630 		struct l_ifmap	ifru_map;
631 		char		ifru_slave[LINUX_IFNAMSIZ];
632 		l_caddr_t	ifru_data;
633 	} ifr_ifru;
634 };
635 
636 #define	ifr_name	ifr_ifrn.ifrn_name	/* Interface name */
637 #define	ifr_hwaddr	ifr_ifru.ifru_hwaddr	/* MAC address */
638 
639 /*
640  * poll()
641  */
642 #define	LINUX_POLLIN		0x0001
643 #define	LINUX_POLLPRI		0x0002
644 #define	LINUX_POLLOUT		0x0004
645 #define	LINUX_POLLERR		0x0008
646 #define	LINUX_POLLHUP		0x0010
647 #define	LINUX_POLLNVAL		0x0020
648 #define	LINUX_POLLRDNORM	0x0040
649 #define	LINUX_POLLRDBAND	0x0080
650 #define	LINUX_POLLWRNORM	0x0100
651 #define	LINUX_POLLWRBAND	0x0200
652 #define	LINUX_POLLMSG		0x0400
653 
654 struct l_pollfd {
655 	l_int		fd;
656 	l_short		events;
657 	l_short		revents;
658 };
659 
660 struct l_user_desc {
661 	l_uint		entry_number;
662 	l_uint		base_addr;
663 	l_uint		limit;
664 	l_uint		seg_32bit:1;
665 	l_uint		contents:2;
666 	l_uint		read_exec_only:1;
667 	l_uint		limit_in_pages:1;
668 	l_uint		seg_not_present:1;
669 	l_uint		useable:1;
670 };
671 
672 struct l_desc_struct {
673 	unsigned long	a, b;
674 };
675 
676 
677 #define	LINUX_LOWERWORD	0x0000ffff
678 
679 /*
680  * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h.
681  * These convert Linux user space descriptor to machine one.
682  */
683 #define	LINUX_LDT_entry_a(info)					\
684 	((((info)->base_addr & LINUX_LOWERWORD) << 16) |	\
685 	((info)->limit & LINUX_LOWERWORD))
686 
687 #define	LINUX_ENTRY_B_READ_EXEC_ONLY	9
688 #define	LINUX_ENTRY_B_CONTENTS		10
689 #define	LINUX_ENTRY_B_SEG_NOT_PRESENT	15
690 #define	LINUX_ENTRY_B_BASE_ADDR		16
691 #define	LINUX_ENTRY_B_USEABLE		20
692 #define	LINUX_ENTRY_B_SEG32BIT		22
693 #define	LINUX_ENTRY_B_LIMIT		23
694 
695 #define	LINUX_LDT_entry_b(info)							\
696 	(((info)->base_addr & 0xff000000) |					\
697 	((info)->limit & 0xf0000) |						\
698 	((info)->contents << LINUX_ENTRY_B_CONTENTS) |				\
699 	(((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) |	\
700 	(((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) |		\
701 	(((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) |	\
702 	((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) |				\
703 	((info)->useable << LINUX_ENTRY_B_USEABLE) |				\
704 	((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000)
705 
706 #define	LINUX_LDT_empty(info)		\
707 	((info)->base_addr == 0 &&	\
708 	(info)->limit == 0 &&		\
709 	(info)->contents == 0 &&	\
710 	(info)->seg_not_present == 1 &&	\
711 	(info)->read_exec_only == 1 &&	\
712 	(info)->seg_32bit == 0 &&	\
713 	(info)->limit_in_pages == 0 &&	\
714 	(info)->useable == 0)
715 
716 /*
717  * Macros for converting segments.
718  * They do the same as those in arch/i386/kernel/process.c in Linux.
719  */
720 #define	LINUX_GET_BASE(desc)				\
721 	((((desc)->a >> 16) & LINUX_LOWERWORD) |	\
722 	(((desc)->b << 16) & 0x00ff0000) |		\
723 	((desc)->b & 0xff000000))
724 
725 #define	LINUX_GET_LIMIT(desc)			\
726 	(((desc)->a & LINUX_LOWERWORD) |	\
727 	((desc)->b & 0xf0000))
728 
729 #define	LINUX_GET_32BIT(desc)		\
730 	(((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1)
731 #define	LINUX_GET_CONTENTS(desc)	\
732 	(((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3)
733 #define	LINUX_GET_WRITABLE(desc)	\
734 	(((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1)
735 #define	LINUX_GET_LIMIT_PAGES(desc)	\
736 	(((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1)
737 #define	LINUX_GET_PRESENT(desc)		\
738 	(((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1)
739 #define	LINUX_GET_USEABLE(desc)		\
740 	(((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1)
741 
742 /* robust futexes */
743 struct linux_robust_list {
744 	struct linux_robust_list	*next;
745 };
746 
747 struct linux_robust_list_head {
748 	struct linux_robust_list	list;
749 	l_long				futex_offset;
750 	struct linux_robust_list	*pending_list;
751 };
752 
753 #endif /* !_I386_LINUX_H_ */
754