FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux.h
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: releng/10.3/sys/i386/linux/linux.h 293587 2016-01-09 17:49:05Z dchagin $
29 */
30
31 #ifndef _I386_LINUX_H_
32 #define _I386_LINUX_H_
33
34 #include <sys/signal.h> /* for sigval union */
35
36 #include <compat/linux/linux.h>
37 #include <i386/linux/linux_syscall.h>
38
39 /*
40 * debugging support
41 */
42 extern u_char linux_debug_map[];
43 #define ldebug(name) isclr(linux_debug_map, LINUX_SYS_linux_ ## name)
44 #define ARGS(nm, fmt) "linux(%ld/%ld): "#nm"("fmt")\n", \
45 (long)td->td_proc->p_pid, (long)td->td_tid
46 #define LMSG(fmt) "linux(%ld/%ld): "fmt"\n", \
47 (long)td->td_proc->p_pid, (long)td->td_tid
48 #define LINUX_DTRACE linuxulator
49
50 #define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
51 #define LINUX_USRSTACK LINUX_SHAREDPAGE
52
53 #define PTRIN(v) (void *)(v)
54 #define PTROUT(v) (l_uintptr_t)(v)
55
56 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
57 #define CP2(src,dst,sfld,dfld) do { (dst).dfld = (src).sfld; } while (0)
58 #define PTRIN_CP(src,dst,fld) \
59 do { (dst).fld = PTRIN((src).fld); } while (0)
60
61 /*
62 * Provide a separate set of types for the Linux types.
63 */
64 typedef int l_int;
65 typedef int32_t l_long;
66 typedef int64_t l_longlong;
67 typedef short l_short;
68 typedef unsigned int l_uint;
69 typedef uint32_t l_ulong;
70 typedef uint64_t l_ulonglong;
71 typedef unsigned short l_ushort;
72
73 typedef char *l_caddr_t;
74 typedef l_ulong l_uintptr_t;
75 typedef l_long l_clock_t;
76 typedef l_int l_daddr_t;
77 typedef l_ushort l_dev_t;
78 typedef l_uint l_gid_t;
79 typedef l_ushort l_gid16_t;
80 typedef l_ulong l_ino_t;
81 typedef l_int l_key_t;
82 typedef l_longlong l_loff_t;
83 typedef l_ushort l_mode_t;
84 typedef l_long l_off_t;
85 typedef l_int l_pid_t;
86 typedef l_uint l_size_t;
87 typedef l_long l_suseconds_t;
88 typedef l_long l_time_t;
89 typedef l_uint l_uid_t;
90 typedef l_ushort l_uid16_t;
91 typedef l_int l_timer_t;
92 typedef l_int l_mqd_t;
93 typedef l_ulong l_fd_mask;
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 20 /* 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 #define LINUX_NSIG_WORDS 2
239
240 /* sigaction flags */
241 #define LINUX_SA_NOCLDSTOP 0x00000001
242 #define LINUX_SA_NOCLDWAIT 0x00000002
243 #define LINUX_SA_SIGINFO 0x00000004
244 #define LINUX_SA_RESTORER 0x04000000
245 #define LINUX_SA_ONSTACK 0x08000000
246 #define LINUX_SA_RESTART 0x10000000
247 #define LINUX_SA_INTERRUPT 0x20000000
248 #define LINUX_SA_NOMASK 0x40000000
249 #define LINUX_SA_ONESHOT 0x80000000
250
251 /* sigprocmask actions */
252 #define LINUX_SIG_BLOCK 0
253 #define LINUX_SIG_UNBLOCK 1
254 #define LINUX_SIG_SETMASK 2
255
256 /* sigaltstack */
257 #define LINUX_MINSIGSTKSZ 2048
258
259 typedef void (*l_handler_t)(l_int);
260 typedef l_ulong l_osigset_t;
261
262 typedef struct {
263 l_handler_t lsa_handler;
264 l_osigset_t lsa_mask;
265 l_ulong lsa_flags;
266 void (*lsa_restorer)(void);
267 } l_osigaction_t;
268
269 typedef struct {
270 l_handler_t lsa_handler;
271 l_ulong lsa_flags;
272 void (*lsa_restorer)(void);
273 l_sigset_t lsa_mask;
274 } l_sigaction_t;
275
276 typedef struct {
277 void *ss_sp;
278 l_int ss_flags;
279 l_size_t ss_size;
280 } l_stack_t;
281
282 /* The Linux sigcontext, pretty much a standard 386 trapframe. */
283 struct l_sigcontext {
284 l_int sc_gs;
285 l_int sc_fs;
286 l_int sc_es;
287 l_int sc_ds;
288 l_int sc_edi;
289 l_int sc_esi;
290 l_int sc_ebp;
291 l_int sc_esp;
292 l_int sc_ebx;
293 l_int sc_edx;
294 l_int sc_ecx;
295 l_int sc_eax;
296 l_int sc_trapno;
297 l_int sc_err;
298 l_int sc_eip;
299 l_int sc_cs;
300 l_int sc_eflags;
301 l_int sc_esp_at_signal;
302 l_int sc_ss;
303 l_int sc_387;
304 l_int sc_mask;
305 l_int sc_cr2;
306 };
307
308 struct l_ucontext {
309 l_ulong uc_flags;
310 void *uc_link;
311 l_stack_t uc_stack;
312 struct l_sigcontext uc_mcontext;
313 l_sigset_t uc_sigmask;
314 };
315
316 #define LINUX_SI_MAX_SIZE 128
317 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3)
318
319 typedef union l_sigval {
320 l_int sival_int;
321 l_uintptr_t sival_ptr;
322 } l_sigval_t;
323
324 typedef struct l_siginfo {
325 l_int lsi_signo;
326 l_int lsi_errno;
327 l_int lsi_code;
328 union {
329 l_int _pad[LINUX_SI_PAD_SIZE];
330
331 struct {
332 l_pid_t _pid;
333 l_uid_t _uid;
334 } _kill;
335
336 struct {
337 l_timer_t _tid;
338 l_int _overrun;
339 char _pad[sizeof(l_uid_t) - sizeof(l_int)];
340 l_sigval_t _sigval;
341 l_int _sys_private;
342 } _timer;
343
344 struct {
345 l_pid_t _pid; /* sender's pid */
346 l_uid_t _uid; /* sender's uid */
347 l_sigval_t _sigval;
348 } _rt;
349
350 struct {
351 l_pid_t _pid; /* which child */
352 l_uid_t _uid; /* sender's uid */
353 l_int _status; /* exit code */
354 l_clock_t _utime;
355 l_clock_t _stime;
356 } _sigchld;
357
358 struct {
359 l_uintptr_t _addr; /* Faulting insn/memory ref. */
360 } _sigfault;
361
362 struct {
363 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */
364 l_int _fd;
365 } _sigpoll;
366 } _sifields;
367 } l_siginfo_t;
368
369 #define lsi_pid _sifields._kill._pid
370 #define lsi_uid _sifields._kill._uid
371 #define lsi_tid _sifields._timer._tid
372 #define lsi_overrun _sifields._timer._overrun
373 #define lsi_sys_private _sifields._timer._sys_private
374 #define lsi_status _sifields._sigchld._status
375 #define lsi_utime _sifields._sigchld._utime
376 #define lsi_stime _sifields._sigchld._stime
377 #define lsi_value _sifields._rt._sigval
378 #define lsi_int _sifields._rt._sigval.sival_int
379 #define lsi_ptr _sifields._rt._sigval.sival_ptr
380 #define lsi_addr _sifields._sigfault._addr
381 #define lsi_band _sifields._sigpoll._band
382 #define lsi_fd _sifields._sigpoll._fd
383
384 struct l_fpreg {
385 u_int16_t significand[4];
386 u_int16_t exponent;
387 };
388
389 struct l_fpxreg {
390 u_int16_t significand[4];
391 u_int16_t exponent;
392 u_int16_t padding[3];
393 };
394
395 struct l_xmmreg {
396 u_int32_t element[4];
397 };
398
399 struct l_fpstate {
400 /* Regular FPU environment */
401 u_int32_t cw;
402 u_int32_t sw;
403 u_int32_t tag;
404 u_int32_t ipoff;
405 u_int32_t cssel;
406 u_int32_t dataoff;
407 u_int32_t datasel;
408 struct l_fpreg _st[8];
409 u_int16_t status;
410 u_int16_t magic; /* 0xffff = regular FPU data */
411
412 /* FXSR FPU environment */
413 u_int32_t _fxsr_env[6]; /* env is ignored. */
414 u_int32_t mxcsr;
415 u_int32_t reserved;
416 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */
417 struct l_xmmreg _xmm[8];
418 u_int32_t padding[56];
419 };
420
421 /*
422 * We make the stack look like Linux expects it when calling a signal
423 * handler, but use the BSD way of calling the handler and sigreturn().
424 * This means that we need to pass the pointer to the handler too.
425 * It is appended to the frame to not interfere with the rest of it.
426 */
427 struct l_sigframe {
428 l_int sf_sig;
429 struct l_sigcontext sf_sc;
430 struct l_fpstate sf_fpstate;
431 l_uint sf_extramask[LINUX_NSIG_WORDS-1];
432 l_handler_t sf_handler;
433 };
434
435 struct l_rt_sigframe {
436 l_int sf_sig;
437 l_siginfo_t *sf_siginfo;
438 struct l_ucontext *sf_ucontext;
439 l_siginfo_t sf_si;
440 struct l_ucontext sf_sc;
441 l_handler_t sf_handler;
442 };
443
444 extern struct sysentvec linux_sysvec;
445
446 /*
447 * arch specific open/fcntl flags
448 */
449 #define LINUX_F_GETLK64 12
450 #define LINUX_F_SETLK64 13
451 #define LINUX_F_SETLKW64 14
452
453 union l_semun {
454 l_int val;
455 struct l_semid_ds *buf;
456 l_ushort *array;
457 struct l_seminfo *__buf;
458 void *__pad;
459 };
460
461 struct l_ipc_perm {
462 l_key_t key;
463 l_uid16_t uid;
464 l_gid16_t gid;
465 l_uid16_t cuid;
466 l_gid16_t cgid;
467 l_ushort mode;
468 l_ushort seq;
469 };
470
471 /*
472 * Socket defines
473 */
474 #define LINUX_SOL_SOCKET 1
475 #define LINUX_SOL_IP 0
476 #define LINUX_SOL_IPX 256
477 #define LINUX_SOL_AX25 257
478 #define LINUX_SOL_TCP 6
479 #define LINUX_SOL_UDP 17
480
481 #define LINUX_SO_DEBUG 1
482 #define LINUX_SO_REUSEADDR 2
483 #define LINUX_SO_TYPE 3
484 #define LINUX_SO_ERROR 4
485 #define LINUX_SO_DONTROUTE 5
486 #define LINUX_SO_BROADCAST 6
487 #define LINUX_SO_SNDBUF 7
488 #define LINUX_SO_RCVBUF 8
489 #define LINUX_SO_KEEPALIVE 9
490 #define LINUX_SO_OOBINLINE 10
491 #define LINUX_SO_NO_CHECK 11
492 #define LINUX_SO_PRIORITY 12
493 #define LINUX_SO_LINGER 13
494 #define LINUX_SO_PEERCRED 17
495 #define LINUX_SO_RCVLOWAT 18
496 #define LINUX_SO_SNDLOWAT 19
497 #define LINUX_SO_RCVTIMEO 20
498 #define LINUX_SO_SNDTIMEO 21
499 #define LINUX_SO_TIMESTAMP 29
500 #define LINUX_SO_ACCEPTCONN 30
501
502 struct l_sockaddr {
503 l_ushort sa_family;
504 char sa_data[14];
505 };
506
507 struct l_ifmap {
508 l_ulong mem_start;
509 l_ulong mem_end;
510 l_ushort base_addr;
511 u_char irq;
512 u_char dma;
513 u_char port;
514 };
515
516 #define LINUX_IFHWADDRLEN 6
517 #define LINUX_IFNAMSIZ 16
518
519 struct l_ifreq {
520 union {
521 char ifrn_name[LINUX_IFNAMSIZ];
522 } ifr_ifrn;
523
524 union {
525 struct l_sockaddr ifru_addr;
526 struct l_sockaddr ifru_dstaddr;
527 struct l_sockaddr ifru_broadaddr;
528 struct l_sockaddr ifru_netmask;
529 struct l_sockaddr ifru_hwaddr;
530 l_short ifru_flags[1];
531 l_int ifru_metric;
532 l_int ifru_mtu;
533 struct l_ifmap ifru_map;
534 char ifru_slave[LINUX_IFNAMSIZ];
535 l_caddr_t ifru_data;
536 } ifr_ifru;
537 };
538
539 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */
540 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
541
542 /*
543 * poll()
544 */
545 #define LINUX_POLLIN 0x0001
546 #define LINUX_POLLPRI 0x0002
547 #define LINUX_POLLOUT 0x0004
548 #define LINUX_POLLERR 0x0008
549 #define LINUX_POLLHUP 0x0010
550 #define LINUX_POLLNVAL 0x0020
551 #define LINUX_POLLRDNORM 0x0040
552 #define LINUX_POLLRDBAND 0x0080
553 #define LINUX_POLLWRNORM 0x0100
554 #define LINUX_POLLWRBAND 0x0200
555 #define LINUX_POLLMSG 0x0400
556
557 struct l_pollfd {
558 l_int fd;
559 l_short events;
560 l_short revents;
561 };
562
563 struct l_user_desc {
564 l_uint entry_number;
565 l_uint base_addr;
566 l_uint limit;
567 l_uint seg_32bit:1;
568 l_uint contents:2;
569 l_uint read_exec_only:1;
570 l_uint limit_in_pages:1;
571 l_uint seg_not_present:1;
572 l_uint useable:1;
573 };
574
575 struct l_desc_struct {
576 unsigned long a, b;
577 };
578
579
580 #define LINUX_LOWERWORD 0x0000ffff
581
582 /*
583 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h.
584 * These convert Linux user space descriptor to machine one.
585 */
586 #define LINUX_LDT_entry_a(info) \
587 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \
588 ((info)->limit & LINUX_LOWERWORD))
589
590 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9
591 #define LINUX_ENTRY_B_CONTENTS 10
592 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15
593 #define LINUX_ENTRY_B_BASE_ADDR 16
594 #define LINUX_ENTRY_B_USEABLE 20
595 #define LINUX_ENTRY_B_SEG32BIT 22
596 #define LINUX_ENTRY_B_LIMIT 23
597
598 #define LINUX_LDT_entry_b(info) \
599 (((info)->base_addr & 0xff000000) | \
600 ((info)->limit & 0xf0000) | \
601 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \
602 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \
603 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \
604 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \
605 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \
606 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \
607 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000)
608
609 #define LINUX_LDT_empty(info) \
610 ((info)->base_addr == 0 && \
611 (info)->limit == 0 && \
612 (info)->contents == 0 && \
613 (info)->seg_not_present == 1 && \
614 (info)->read_exec_only == 1 && \
615 (info)->seg_32bit == 0 && \
616 (info)->limit_in_pages == 0 && \
617 (info)->useable == 0)
618
619 /*
620 * Macros for converting segments.
621 * They do the same as those in arch/i386/kernel/process.c in Linux.
622 */
623 #define LINUX_GET_BASE(desc) \
624 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \
625 (((desc)->b << 16) & 0x00ff0000) | \
626 ((desc)->b & 0xff000000))
627
628 #define LINUX_GET_LIMIT(desc) \
629 (((desc)->a & LINUX_LOWERWORD) | \
630 ((desc)->b & 0xf0000))
631
632 #define LINUX_GET_32BIT(desc) \
633 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1)
634 #define LINUX_GET_CONTENTS(desc) \
635 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3)
636 #define LINUX_GET_WRITABLE(desc) \
637 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1)
638 #define LINUX_GET_LIMIT_PAGES(desc) \
639 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1)
640 #define LINUX_GET_PRESENT(desc) \
641 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1)
642 #define LINUX_GET_USEABLE(desc) \
643 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1)
644
645 #define linux_copyout_rusage(r, u) copyout(r, u, sizeof(*r))
646
647 /* robust futexes */
648 struct linux_robust_list {
649 struct linux_robust_list *next;
650 };
651
652 struct linux_robust_list_head {
653 struct linux_robust_list list;
654 l_long futex_offset;
655 struct linux_robust_list *pending_list;
656 };
657
658 #endif /* !_I386_LINUX_H_ */
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