summaryrefslogtreecommitdiff
path: root/boot/boot.c
blob: 6891b6ccff083d85196fff240005326ae7b52d84 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
/* Load a task using the single server, and then run it
   as if we were the kernel. 
   Copyright (C) 1993, 1994 Free Software Foundation

This file is part of the GNU Hurd.

The GNU Hurd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

The GNU Hurd is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with the GNU Hurd; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

/* Written by Michael I. Bushnell.  */

#include <mach.h>
#include <mach/notify.h>
#include <errno.h>
#include <device/device.h>
#include <a.out.h>
#include <fcntlbits.h>

#include "notify_S.h"
#include "exec_S.h"
#include "device_S.h"
#include "io_S.h"

mach_port_t privileged_host_port, master_device_port;
mach_port_t pseudo_master_device_port;
mach_port_t receive_set;
mach_port_t pseudo_console;

mach_port_t php_child_name, psmdp_child_name;

task_t child_task;
mach_port_t bootport;

/* These will prevent the Hurd-ish versions from being used */

int
task_by_pid (int pid)
{
  return syscall (-33, pid);
}

int
write (int fd,
       void *buf,
       int buflen)
{
  return syscall (4, fd, buf, buflen);
}

int
read (int fd,
      void *buf,
      int buflen)
{
  return syscall (3, fd, buf, buflen);
}

int
open (char *name,
      int flags,
      int mode)
{
  return syscall (5, name, flags, mode);
}

int
lseek (int fd,
       int off,
       int whence)
{
  return syscall (19, fd, off, whence);
}

int
_exit (int code)
{
  return syscall (1, code);
}


int
request_server (mach_msg_header_t *inp,
		mach_msg_header_t *outp)
{
  return (exec_server (inp, outp)
	  || io_server (inp, outp)
	  || device_server (inp, outp)
	  || notify_server (inp, outp));
}

vm_address_t
load_image (task_t t,
	    char *file)
{
  int fd;
  struct exec x;
  char *buf;
  int headercruft;
  vm_address_t base = 0x10000;
  int amount;
  vm_address_t bsspagestart, bssstart, stackaddr;
  int magic;

  fd = open (file, 0, 0);
  
  read (fd, &x, sizeof (struct exec));
  magic = N_MAGIC (x);

  headercruft = sizeof (struct exec) * (magic == ZMAGIC);
  
  amount = round_page (headercruft + x.a_text + x.a_data);
  vm_allocate (mach_task_self (), (u_int *)&buf, amount, 1);
  lseek (fd, -headercruft, 1);
  read (fd, buf, amount);
  vm_allocate (t, &base, amount, 0);
  vm_write (t, base, (u_int) buf, amount);
  if (magic != OMAGIC)
    vm_protect (t, base, trunc_page (headercruft + x.a_text),
		0, VM_PROT_READ | VM_PROT_EXECUTE);
  vm_deallocate (mach_task_self (), (u_int)buf, amount);

  bssstart = base + x.a_text + x.a_data + headercruft;
  bsspagestart = round_page (bssstart);
  vm_allocate (t, &bsspagestart, x.a_bss - (bsspagestart - bssstart), 0);
  
  return x.a_entry;
}


int
main (int argc, char **argv, char **envp)
{
  task_t newtask;
  thread_t newthread;
  mach_port_t foo;
  vm_address_t startpc;
  char msg[] = "Boot is here.\n";
  char c;

  write (1, msg, sizeof msg);

  privileged_host_port = task_by_pid (-1);
  master_device_port = task_by_pid (-2);

  task_create (mach_task_self (), 0, &newtask);
  
  startpc = load_image (newtask, argv[1]);
  
  mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_PORT_SET,
		      &receive_set);
  
  mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE, 
		      &pseudo_master_device_port);
  mach_port_move_member (mach_task_self (), pseudo_master_device_port,
			 receive_set);

  mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE,
		      &pseudo_console);
  mach_port_move_member (mach_task_self (), pseudo_console, receive_set);
  mach_port_insert_right (mach_task_self (), pseudo_console, pseudo_console,
			  MACH_MSG_TYPE_MAKE_SEND);

  mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE, &bootport);
  mach_port_move_member (mach_task_self (), bootport, receive_set);

  mach_port_insert_right (mach_task_self (), bootport, bootport, 
			  MACH_MSG_TYPE_MAKE_SEND);
  task_set_bootstrap_port (newtask, bootport);
  mach_port_deallocate (mach_task_self (), bootport);

  mach_port_request_notification (mach_task_self (), newtask, 
				  MACH_NOTIFY_DEAD_NAME, 1, bootport, 
				  MACH_MSG_TYPE_MAKE_SEND_ONCE, &foo);
  if (foo)
    mach_port_deallocate (mach_task_self (), foo);
  child_task = newtask;

  php_child_name = 100;
  psmdp_child_name = 101;
  mach_port_insert_right (newtask, php_child_name, privileged_host_port,
			  MACH_MSG_TYPE_COPY_SEND);
  mach_port_insert_right (newtask, psmdp_child_name, pseudo_master_device_port,
			  MACH_MSG_TYPE_MAKE_SEND);
  
  thread_create (newtask, &newthread);
  __mach_setup_thread (newtask, newthread, startpc);

  write (1, "pausing\n", 8);
  read (0, &c, 1);
  thread_resume (newthread);
  
  mach_msg_server (request_server, __vm_page_size * 2, receive_set);
}


/* Implementation of exec interface */


S_exec_exec (
	mach_port_t execserver,
	mach_port_t file,
	mach_port_t oldtask,
	int flags,
	data_t argv,
	mach_msg_type_number_t argvCnt,
	boolean_t argvSCopy,
	data_t envp,
	mach_msg_type_number_t envpCnt,
	boolean_t envpSCopy,
	portarray_t dtable,
	mach_msg_type_number_t dtableCnt,
	portarray_t portarray,
	mach_msg_type_number_t portarrayCnt,
	intarray_t intarray,
	mach_msg_type_number_t intarrayCnt,
	mach_port_array_t deallocnames,
	mach_msg_type_number_t deallocnamesCnt,
	mach_port_array_t destroynames,
	mach_msg_type_number_t destroynamesCnt)
{
  return EOPNOTSUPP;
}

S_exec_init (
	mach_port_t execserver,
	auth_t auth_handle,
	process_t proc_server)
{
  return EOPNOTSUPP;
}

S_exec_setexecdata (
	mach_port_t execserver,
	portarray_t ports,
	mach_msg_type_number_t portsCnt,
	intarray_t ints,
	mach_msg_type_number_t intsCnt)
{
  return EOPNOTSUPP;
}


error_t
S_exec_startup (mach_port_t port,
		u_int *base_addr,
		vm_size_t *stack_size,
		int *flags,
		char **argvP,
		u_int *argvlen,
		char **envpP,
		u_int *envplen,
		mach_port_t **dtableP,
		mach_msg_type_name_t *dtablepoly,
		u_int *dtablelen,
		mach_port_t **portarrayP,
		mach_msg_type_name_t *portarraypoly,
		u_int *portarraylen,
		int **intarrayP,
		u_int *intarraylen)
{
  mach_port_t *portarray, *dtable;
  int *intarray, nc;
  char argv[100];

  /* The argv string has nulls in it; so we use %c for the nulls
     and fill with constant zero. */
  nc = sprintf (argv, "[BOOTSTRAP]%c-x%c%d%c%d%c%s", '\0', '\0',
		php_child_name, '\0', psmdp_child_name, '\0', "hd0f");

  if (nc > *argvlen)
    vm_allocate (mach_task_self (), (vm_address_t *)argvP, nc, 1);
  bcopy (argv, *argvP, nc);
  *argvlen = nc;
  
  *base_addr = *stack_size = 0;

  *flags = 0;
  
  *envplen = 0;

  if (*portarraylen < INIT_PORT_MAX)
    vm_allocate (mach_task_self (), (u_int *)portarrayP,
		 (INIT_PORT_MAX * sizeof (mach_port_t)), 1);
  portarray = *portarrayP;
  *portarraylen = INIT_PORT_MAX;
  *portarraypoly = MACH_MSG_TYPE_COPY_SEND;

  *dtablelen = 0;
  *dtablepoly = MACH_MSG_TYPE_COPY_SEND;
  
  if (*intarraylen < INIT_INT_MAX)
    vm_allocate (mach_task_self (), (u_int *)intarrayP,
		 (INIT_INT_MAX * sizeof (mach_port_t)), 1);
  intarray = *intarrayP;
  *intarraylen = INIT_INT_MAX;
  
  bzero (portarray, INIT_PORT_MAX * sizeof (mach_port_t));
  bzero (intarray, INIT_INT_MAX * sizeof (int));
  
  return 0;
}



/* Implementation of device interface */

ds_device_open (mach_port_t master_port,
		mach_port_t reply_port,
		mach_msg_type_name_t reply_type,
		dev_mode_t mode,
		dev_name_t name,
		device_t *device)
{
  if (master_port != pseudo_master_device_port)
    return D_INVALID_OPERATION;
  
  if (!strcmp (name, "console"))
    {
      *device = pseudo_console;
      return 0;
    }
  
  return device_open (master_device_port, mode, name, device);
}

ds_device_close (device_t device)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  return 0;
}

ds_device_write (device_t device,
		 mach_port_t reply_port,
		 mach_msg_type_name_t reply_type,
		 dev_mode_t mode,
		 recnum_t recnum,
		 io_buf_ptr_t data,
		 unsigned int datalen,
		 int *bytes_written)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;

  *bytes_written = write (1, (void *)*data, datalen);
  
  return (*bytes_written == -1 ? D_IO_ERROR : D_SUCCESS);
}

ds_device_write_inband (device_t device,
			mach_port_t reply_port,
			mach_msg_type_name_t reply_type,
			dev_mode_t mode,
			recnum_t recnum,
			io_buf_ptr_inband_t data,
			unsigned int datalen,
			int *bytes_written)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;

  *bytes_written = write (1, data, datalen);
  
  return (*bytes_written == -1 ? D_IO_ERROR : D_SUCCESS);
}

ds_device_read (device_t device,
		mach_port_t reply_port,
		mach_msg_type_name_t reply_type,
		dev_mode_t mode,
		recnum_t recnum,
		int bytes_wanted,
		io_buf_ptr_t *data,
		unsigned int *datalen)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  
  vm_allocate (mach_task_self (), (pointer_t *)data, bytes_wanted, 1);
  *datalen = read (0, *data, bytes_wanted);

  return (*datalen == -1 ? D_IO_ERROR : D_SUCCESS);
}

ds_device_read_inband (device_t device,
		       mach_port_t reply_port,
		       mach_msg_type_name_t reply_type,
		       dev_mode_t mode,
		       recnum_t recnum,
		       int bytes_wanted,
		       io_buf_ptr_inband_t data,
		       unsigned int *datalen)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  
  *datalen = read (0, data, bytes_wanted);
  
  return (*datalen == -1 ? D_IO_ERROR : D_SUCCESS);
}

ds_xxx_device_set_status (device_t device,
			  dev_flavor_t flavor,
			  dev_status_t status,
			  u_int statu_cnt)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  return D_INVALID_OPERATION;
}

ds_xxx_device_get_status (device_t device,
			  dev_flavor_t flavor,
			  dev_status_t status,
			  u_int *statuscnt)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  return D_INVALID_OPERATION;
}

ds_xxx_device_set_filter (device_t device,
			  mach_port_t rec,
			  int pri,
			  filter_array_t filt,
			  unsigned int len)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  return D_INVALID_OPERATION;
}

ds_device_map (device_t device,
	       vm_prot_t prot,
	       vm_offset_t offset,
	       vm_size_t size,
	       memory_object_t *pager,
	       int unmap)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  return D_INVALID_OPERATION;
}

ds_device_set_status (device_t device,
		      dev_flavor_t flavor,
		      dev_status_t status,
		      unsigned int statuslen)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  return D_INVALID_OPERATION;
}

ds_device_get_status (device_t device,
		      dev_flavor_t flavor,
		      dev_status_t status,
		      unsigned int *statuslen)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  return D_INVALID_OPERATION;
}

ds_device_set_filter (device_t device,
		      mach_port_t receive_port,
		      int priority,
		      filter_array_t filter,
		      unsigned int filterlen)
{
  if (device != pseudo_console)
    return D_NO_SUCH_DEVICE;
  return D_INVALID_OPERATION;
}


/* Implementation of notify interface */
do_mach_notify_port_deleted (mach_port_t notify,
			     mach_port_t name)
{
  return EOPNOTSUPP;
}

do_mach_notify_msg_accepted (mach_port_t notify,
			     mach_port_t name)
{
  return EOPNOTSUPP;
}

do_mach_notify_port_destroyed (mach_port_t notify,
			       mach_port_t port)
{
  return EOPNOTSUPP;
}

do_mach_notify_no_senders (mach_port_t notify,
			   mach_port_mscount_t mscount)
{
  return EOPNOTSUPP;
}

do_mach_notify_send_once (mach_port_t notify)
{
  return EOPNOTSUPP;
}

do_mach_notify_dead_name (mach_port_t notify,
			  mach_port_t name)
{
  if (name == child_task && notify == bootport)
    _exit (0);
}


/* Implementation of the Hurd I/O interface, which
   we support for the console port only. */

error_t
S_io_write (mach_port_t object,
	    char *data,
	    u_int datalen,
	    off_t offset,
	    int *amtwritten)
{
  if (object != pseudo_console)
    return EOPNOTSUPP;
  
  *amtwritten = write (1, data, datalen);
  return *amtwritten == -1 ? errno : 0;
}

error_t
S_io_read (mach_port_t object,
	   char **data,
	   u_int *datalen,
	   off_t offset,
	   int amount)
{
  if (object != pseudo_console)
    return EOPNOTSUPP;
  
  if (amount > *datalen)
    vm_allocate (mach_task_self (), amount, data, 1);
  return read (0, *data, amount) == -1 ? errno : 0;
}

error_t 
S_io_seek (mach_port_t object,
	   off_t offset,
	   int whence,
	   off_t *newp)
{
  return object == pseudo_console ? ESPIPE : EOPNOTSUPP;
}

error_t
S_io_readable (mach_port_t object,
	       int *amt)
{
  return EOPNOTSUPP;
}

error_t 
S_io_set_all_openmodes (mach_port_t object,
			int bits)
{
  return EOPNOTSUPP;
}

error_t
S_io_get_openmodes (mach_port_t object,
		    int *modes)
{
  *modes = O_READ | O_WRITE;
  return object == pseudo_console ? 0 : EOPNOTSUPP;
}

error_t
S_io_set_some_openmodes (mach_port_t object,
			 int bits)
{
  return EOPNOTSUPP;
}

error_t
S_io_clear_some_openmodes (mach_port_t object,
			   int bits)
{
  return EOPNOTSUPP;
}

error_t
S_io_async (mach_port_t object,
	    mach_port_t notify,
	    mach_port_t *id)
{
  return EOPNOTSUPP;
}

error_t
S_io_mod_owner (mach_port_t object,
		pid_t owner)
{
  return EOPNOTSUPP;
}

error_t
S_io_get_owner (mach_port_t object,
		pid_t *owner)
{
  return EOPNOTSUPP;
}

error_t
S_io_get_icky_async_id (mach_port_t object,
			mach_port_t *id)
{
  return EOPNOTSUPP;
}

error_t
S_io_select (mach_port_t object,
	     int type,
	     mach_port_t ret,
	     int tag,
	     int *result)
{
  return EOPNOTSUPP;
}

error_t
S_io_stat (mach_port_t object,
	   struct stat *st)
{
  if (object != pseudo_console)
    return EOPNOTSUPP;
  
  bzero (st, sizeof (struct stat));
  st->st_blksize = 1024;
  return 0;
}

error_t
S_io_reauthenticate (mach_port_t object,
		     int rendint)
{
  return EOPNOTSUPP;
}

error_t
S_io_restrict_auth (mach_port_t object,
		    mach_port_t *newobject,
		    mach_msg_type_name_t *newobjtype,
		    uid_t *uids,
		    u_int nuids,
		    uid_t *gids,
		    u_int ngids)
{
  if (object != pseudo_console)
    return EOPNOTSUPP;
  *newobject = pseudo_console;
  *newobjtype = MACH_MSG_TYPE_MAKE_SEND;
  return 0;
}

error_t
S_io_duplicate (mach_port_t object,
		mach_port_t *newobj,
		mach_msg_type_name_t *newobjtype)
{
  if (object != pseudo_console)
    return EOPNOTSUPP;
  *newobj = pseudo_console;
  *newobjtype = MACH_MSG_TYPE_MAKE_SEND;
  return 0;
}

error_t
S_io_server_version (mach_port_t object,
		     char *name,
		     int *maj,
		     int *min,
		     int *edit)
{
  return EOPNOTSUPP;
}

error_t
S_io_map (mach_port_t obj,
	  mach_port_t *rd,
	  mach_msg_type_name_t *rdtype,
	  mach_port_t *wr,
	  mach_msg_type_name_t *wrtype)
{
  return EOPNOTSUPP;
}

error_t
S_io_map_cntl (mach_port_t obj,
	       mach_port_t *mem)
{
  return EOPNOTSUPP;
}

error_t
S_io_get_conch (mach_port_t obj)
{
  return EOPNOTSUPP;
}

error_t
S_io_release_conch (mach_port_t obj)
{
  return EOPNOTSUPP;
}

error_t
S_io_eofnotify (mach_port_t obj)
{
  return EOPNOTSUPP;
}

error_t
S_io_prenotify (mach_port_t obj,
		int start,
		int end)
{
  return EOPNOTSUPP;
}

error_t
S_io_postnotify (mach_port_t obj,
		 int start,
		 int end)
{
  return EOPNOTSUPP;
}

error_t
S_io_readsleep (mach_port_t obj)
{
  return EOPNOTSUPP;
}

error_t
S_io_sigio (mach_port_t obj)
{
  return EOPNOTSUPP;
}