aboutsummaryrefslogtreecommitdiff
path: root/arch/sparc64/solaris/timod.c
blob: f53123c02c2b6b76f9b687bd1f675753d1342633 (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
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
/* $Id: timod.c,v 1.19 2002/02/08 03:57:14 davem Exp $
 * timod.c: timod emulation.
 *
 * Copyright (C) 1998 Patrik Rak (prak3264@ss1000.ms.mff.cuni.cz)
 *
 * Streams & timod emulation based on code
 * Copyright (C) 1995, 1996 Mike Jagdis (jaggy@purplet.demon.co.uk)
 *
 */
 
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/ioctl.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/netdevice.h>
#include <linux/poll.h>

#include <net/sock.h>

#include <asm/uaccess.h>
#include <asm/termios.h>

#include "conv.h"
#include "socksys.h"

asmlinkage int solaris_ioctl(unsigned int fd, unsigned int cmd, u32 arg);

static DEFINE_SPINLOCK(timod_pagelock);
static char * page = NULL ;

#ifndef DEBUG_SOLARIS_KMALLOC

#define mykmalloc kmalloc
#define mykfree kfree

#else

void * mykmalloc(size_t s, gfp_t gfp)
{
	static char * page;
	static size_t free;
	void * r;
	s = ((s + 63) & ~63);
	if( s > PAGE_SIZE ) {
		SOLD("too big size, calling real kmalloc");
		return kmalloc(s, gfp);
	}
	if( s > free ) {
		/* we are wasting memory, but we don't care */
		page = (char *)__get_free_page(gfp);
		free = PAGE_SIZE;
	}
	r = page;
	page += s;
	free -= s;
	return r;
}

void mykfree(void *p)
{
}

#endif

#ifndef DEBUG_SOLARIS

#define BUF_SIZE	PAGE_SIZE
#define PUT_MAGIC(a,m)
#define SCHECK_MAGIC(a,m)
#define BUF_OFFSET	0
#define MKCTL_TRAILER	0

#else

#define BUF_SIZE	(PAGE_SIZE-2*sizeof(u64))
#define BUFPAGE_MAGIC	0xBADC0DEDDEADBABEL
#define MKCTL_MAGIC	0xDEADBABEBADC0DEDL
#define PUT_MAGIC(a,m)	do{(*(u64*)(a))=(m);}while(0)
#define SCHECK_MAGIC(a,m)	do{if((*(u64*)(a))!=(m))printk("%s,%u,%s(): magic %08x at %p corrupted!\n",\
				__FILE__,__LINE__,__FUNCTION__,(m),(a));}while(0)
#define BUF_OFFSET	sizeof(u64)
#define MKCTL_TRAILER	sizeof(u64)

#endif

static char *getpage( void )
{
	char *r;
	SOLD("getting page");
	spin_lock(&timod_pagelock);
	if (page) {
		r = page;
		page = NULL;
		spin_unlock(&timod_pagelock);
		SOLD("got cached");
		return r + BUF_OFFSET;
	}
	spin_unlock(&timod_pagelock);
	SOLD("getting new");
	r = (char *)__get_free_page(GFP_KERNEL);
	PUT_MAGIC(r,BUFPAGE_MAGIC);
	PUT_MAGIC(r+PAGE_SIZE-sizeof(u64),BUFPAGE_MAGIC);
	return r + BUF_OFFSET;
}

static void putpage(char *p)
{
	SOLD("putting page");
	p = p - BUF_OFFSET;
	SCHECK_MAGIC(p,BUFPAGE_MAGIC);
	SCHECK_MAGIC(p+PAGE_SIZE-sizeof(u64),BUFPAGE_MAGIC);
	spin_lock(&timod_pagelock);
	if (page) {
		spin_unlock(&timod_pagelock);
		free_page((unsigned long)p);
		SOLD("freed it");
	} else {
		page = p;
		spin_unlock(&timod_pagelock);
		SOLD("cached it");
	}
}

static struct T_primsg *timod_mkctl(int size)
{
	struct T_primsg *it;

	SOLD("creating primsg");
	it = (struct T_primsg *)mykmalloc(size+sizeof(*it)-sizeof(s32)+2*MKCTL_TRAILER, GFP_KERNEL);
	if (it) {
		SOLD("got it");
		it->pri = MSG_HIPRI;
		it->length = size;
		PUT_MAGIC((char*)((u64)(((char *)&it->type)+size+7)&~7),MKCTL_MAGIC);
	}
	return it;
}

static void timod_wake_socket(unsigned int fd)
{
	struct socket *sock;
	struct fdtable *fdt;

	SOLD("wakeing socket");
	fdt = files_fdtable(current->files);
	sock = SOCKET_I(fdt->fd[fd]->f_path.dentry->d_inode);
	wake_up_interruptible(&sock->wait);
	read_lock(&sock->sk->sk_callback_lock);
	if (sock->fasync_list && !test_bit(SOCK_ASYNC_WAITDATA, &sock->flags))
		__kill_fasync(sock->fasync_list, SIGIO, POLL_IN);
	read_unlock(&sock->sk->sk_callback_lock);
	SOLD("done");
}

static void timod_queue(unsigned int fd, struct T_primsg *it)
{
	struct sol_socket_struct *sock;
	struct fdtable *fdt;

	SOLD("queuing primsg");
	fdt = files_fdtable(current->files);
	sock = (struct sol_socket_struct *)fdt->fd[fd]->private_data;
	it->next = sock->pfirst;
	sock->pfirst = it;
	if (!sock->plast)
		sock->plast = it;
	timod_wake_socket(fd);
	SOLD("done");
}

static void timod_queue_end(unsigned int fd, struct T_primsg *it)
{
	struct sol_socket_struct *sock;
	struct fdtable *fdt;

	SOLD("queuing primsg at end");
	fdt = files_fdtable(current->files);
	sock = (struct sol_socket_struct *)fdt->fd[fd]->private_data;
	it->next = NULL;
	if (sock->plast)
		sock->plast->next = it;
	else
		sock->pfirst = it;
	sock->plast = it;
	SOLD("done");
}

static void timod_error(unsigned int fd, int prim, int terr, int uerr)
{
	struct T_primsg *it;
	
	SOLD("making error");
	it = timod_mkctl(sizeof(struct T_error_ack));
	if (it) {
		struct T_error_ack *err = (struct T_error_ack *)&it->type;
		
		SOLD("got it");
		err->PRIM_type = T_ERROR_ACK;
		err->ERROR_prim = prim;
		err->TLI_error = terr;
		err->UNIX_error = uerr; /* FIXME: convert this */
		timod_queue(fd, it);
	}
	SOLD("done");
}

static void timod_ok(unsigned int fd, int prim)
{
	struct T_primsg *it;
	struct T_ok_ack *ok;
	
	SOLD("creating ok ack");
	it = timod_mkctl(sizeof(*ok));
	if (it) {
		SOLD("got it");
		ok = (struct T_ok_ack *)&it->type;
		ok->PRIM_type = T_OK_ACK;
		ok->CORRECT_prim = prim;
		timod_queue(fd, it);
	}
	SOLD("done");
}

static int timod_optmgmt(unsigned int fd, int flag, char __user *opt_buf, int opt_len, int do_ret)
{
	int error, failed;
	int ret_space, ret_len;
	long args[5];
	char *ret_pos,*ret_buf;
	int (*sys_socketcall)(int, unsigned long *) =
		(int (*)(int, unsigned long *))SYS(socketcall);
	mm_segment_t old_fs = get_fs();

	SOLD("entry");
	SOLDD(("fd %u flg %u buf %p len %u doret %u",fd,flag,opt_buf,opt_len,do_ret));
	if (!do_ret && (!opt_buf || opt_len <= 0))
		return 0;
	SOLD("getting page");
	ret_pos = ret_buf = getpage();
	ret_space = BUF_SIZE;
	ret_len = 0;
	
	error = failed = 0;
	SOLD("looping");
	while(opt_len >= sizeof(struct opthdr)) {
		struct opthdr *opt;
		int orig_opt_len; 
		SOLD("loop start");
		opt = (struct opthdr *)ret_pos; 
		if (ret_space < sizeof(struct opthdr)) {
			failed = TSYSERR;
			break;
		}
		SOLD("getting opthdr");
		if (copy_from_user(opt, opt_buf, sizeof(struct opthdr)) ||
			opt->len > opt_len) {
			failed = TBADOPT;
			break;
		}
		SOLD("got opthdr");
		if (flag == T_NEGOTIATE) {
			char *buf;
			
			SOLD("handling T_NEGOTIATE");
			buf = ret_pos + sizeof(struct opthdr);
			if (ret_space < opt->len + sizeof(struct opthdr) ||
				copy_from_user(buf, opt_buf+sizeof(struct opthdr), opt->len)) {
				failed = TSYSERR;
				break;
			}
			SOLD("got optdata");
			args[0] = fd;
			args[1] = opt->level;
			args[2] = opt->name;
			args[3] = (long)buf;
			args[4] = opt->len;
			SOLD("calling SETSOCKOPT");
			set_fs(KERNEL_DS);
			error = sys_socketcall(SYS_SETSOCKOPT, args);
			set_fs(old_fs);
			if (error) {
				failed = TBADOPT;
				break;
			}
			SOLD("SETSOCKOPT ok");
		}
		orig_opt_len = opt->len;
		opt->len = ret_space - sizeof(struct opthdr);
		if (opt->len < 0) {
			failed = TSYSERR;
			break;
		}
		args[0] = fd;
		args[1] = opt->level;
		args[2] = opt->name;
		args[3] = (long)(ret_pos+sizeof(struct opthdr));
		args[4] = (long)&opt->len;
		SOLD("calling GETSOCKOPT");
		set_fs(KERNEL_DS);
		error = sys_socketcall(SYS_GETSOCKOPT, args);
		set_fs(old_fs);
		if (error) {
			failed = TBADOPT;
			break;
		}
		SOLD("GETSOCKOPT ok");
		ret_space -= sizeof(struct opthdr) + opt->len;
		ret_len += sizeof(struct opthdr) + opt->len;
		ret_pos += sizeof(struct opthdr) + opt->len;
		opt_len -= sizeof(struct opthdr) + orig_opt_len;
		opt_buf += sizeof(struct opthdr) + orig_opt_len;
		SOLD("loop end");
	}
	SOLD("loop done");
	if (do_ret) {
		SOLD("generating ret msg");
		if (failed)
			timod_error(fd, T_OPTMGMT_REQ, failed, -error);
		else {
			struct T_primsg *it;
			it = timod_mkctl(sizeof(struct T_optmgmt_ack) + ret_len);
			if (it) {
				struct T_optmgmt_ack *ack =
					(struct T_optmgmt_ack *)&it->type;
				SOLD("got primsg");
				ack->PRIM_type = T_OPTMGMT_ACK;
				ack->OPT_length = ret_len;
				ack->OPT_offset = sizeof(struct T_optmgmt_ack);
				ack->MGMT_flags = (failed ? T_FAILURE : flag);
				memcpy(((char*)ack)+sizeof(struct T_optmgmt_ack),
					ret_buf, ret_len);
				timod_queue(fd, it);
			}
		}
	}
	SOLDD(("put_page %p\n", ret_buf));
	putpage(ret_buf);
	SOLD("done");	
	return 0;
}

int timod_putmsg(unsigned int fd, char __user *ctl_buf, int ctl_len,
			char __user *data_buf, int data_len, int flags)
{
	int ret, error, terror;
	char *buf;
	struct file *filp;
	struct inode *ino;
	struct fdtable *fdt;
	struct sol_socket_struct *sock;
	mm_segment_t old_fs = get_fs();
	long args[6];
	int (*sys_socketcall)(int, unsigned long __user *) =
		(int (*)(int, unsigned long __user *))SYS(socketcall);
	int (*sys_sendto)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int) =
		(int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int))SYS(sendto);

	fdt = files_fdtable(current->files);
	filp = fdt->fd[fd];
	ino = filp->f_path.dentry->d_inode;
	sock = (struct sol_socket_struct *)filp->private_data;
	SOLD("entry");
	if (get_user(ret, (int __user *)A(ctl_buf)))
		return -EFAULT;
	switch (ret) {
	case T_BIND_REQ:
	{
		struct T_bind_req req;
		
		SOLDD(("bind %016lx(%016lx)\n", sock, filp));
		SOLD("T_BIND_REQ");
		if (sock->state != TS_UNBND) {
			timod_error(fd, T_BIND_REQ, TOUTSTATE, 0);
			return 0;
		}
		SOLD("state ok");
		if (copy_from_user(&req, ctl_buf, sizeof(req))) {
			timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
			return 0;
		}
		SOLD("got ctl req");
		if (req.ADDR_offset && req.ADDR_length) {
			if (req.ADDR_length > BUF_SIZE) {
				timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
				return 0;
			}
			SOLD("req size ok");
			buf = getpage();
			if (copy_from_user(buf, ctl_buf + req.ADDR_offset, req.ADDR_length)) {
				timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
				putpage(buf);
				return 0;
			}
			SOLD("got ctl data");
			args[0] = fd;
			args[1] = (long)buf;
			args[2] = req.ADDR_length;
			SOLD("calling BIND");
			set_fs(KERNEL_DS);
			error = sys_socketcall(SYS_BIND, args);
			set_fs(old_fs);
			putpage(buf);
			SOLD("BIND returned");
		} else 
			error = 0;
		if (!error) {
			struct T_primsg *it;
			if (req.CONIND_number) {
	  			args[0] = fd;
  				args[1] = req.CONIND_number;
  				SOLD("calling LISTEN");
  				set_fs(KERNEL_DS);
	  			error = sys_socketcall(SYS_LISTEN, args);
  				set_fs(old_fs);
  				SOLD("LISTEN done");
  			}
			it = timod_mkctl(sizeof(struct T_bind_ack)+sizeof(struct sockaddr));
			if (it) {
				struct T_bind_ack *ack;

				ack = (struct T_bind_ack *)&it->type;
				ack->PRIM_type = T_BIND_ACK;
				ack->ADDR_offset = sizeof(*ack);
				ack->ADDR_length = sizeof(struct sockaddr);
				ack->CONIND_number = req.CONIND_number;
				args[0] = fd;
				args[1] = (long)(ack+sizeof(*ack));
				args[2] = (long)&ack->ADDR_length;
				set_fs(KERNEL_DS);
				sys_socketcall(SYS_GETSOCKNAME,args);
				set_fs(old_fs);
				sock->state = TS_IDLE;
				timod_ok(fd, T_BIND_REQ);
				timod_queue_end(fd, it);
				SOLD("BIND done");
				return 0;
			}
		}
		SOLD("some error");
		switch (error) {
			case -EINVAL:
				terror = TOUTSTATE;
				error = 0;
				break;
			case -EACCES:
				terror = TACCES;
				error = 0;
				break;
			case -EADDRNOTAVAIL:
			case -EADDRINUSE:
				terror = TNOADDR;
				error = 0;
				break;
			default:
				terror = TSYSERR;
				break;
		}
		timod_error(fd, T_BIND_REQ, terror, -error);
		SOLD("BIND done");
		return 0;
	}
	case T_CONN_REQ:
	{
		struct T_conn_req req;
		unsigned short oldflags;
		struct T_primsg *it;
		SOLD("T_CONN_REQ");
		if (sock->state != TS_UNBND && sock->state != TS_IDLE) {
			timod_error(fd, T_CONN_REQ, TOUTSTATE, 0);
			return 0;
		}
		SOLD("state ok");
		if (copy_from_user(&req, ctl_buf, sizeof(req))) {
			timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
			return 0;
		}
		SOLD("got ctl req");
		if (ctl_len > BUF_SIZE) {
			timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
			return 0;
		}
		SOLD("req size ok");
		buf = getpage();
		if (copy_from_user(buf, ctl_buf, ctl_len)) {
			timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
			putpage(buf);
			return 0;
		}
#ifdef DEBUG_SOLARIS		
		{
			char * ptr = buf;
			int len = ctl_len;
			printk("returned data (%d bytes): ",len);
			while( len-- ) {
				if (!(len & 7))
					printk(" ");
				printk("%02x",(unsigned char)*ptr++);
			}
			printk("\n");
		}
#endif
		SOLD("got ctl data");
		args[0] = fd;
		args[1] = (long)buf+req.DEST_offset;
		args[2] = req.DEST_length;
		oldflags = filp->f_flags;
		filp->f_flags &= ~O_NONBLOCK;
		SOLD("calling CONNECT");
		set_fs(KERNEL_DS);
		error = sys_socketcall(SYS_CONNECT, args);
		set_fs(old_fs);
		filp->f_flags = oldflags;
		SOLD("CONNECT done");
		if (!error) {
			struct T_conn_con *con;
			SOLD("no error");
			it = timod_mkctl(ctl_len);
			if (!it) {
				putpage(buf);
				return -ENOMEM;
			}
			con = (struct T_conn_con *)&it->type;
#ifdef DEBUG_SOLARIS			
			{
				char * ptr = buf;
				int len = ctl_len;
				printk("returned data (%d bytes): ",len);
				while( len-- ) {
					if (!(len & 7))
						printk(" ");
					printk("%02x",(unsigned char)*ptr++);
				}
				printk("\n");
			}
#endif
			memcpy(con, buf, ctl_len);
			SOLD("copied ctl_buf");
			con->PRIM_type = T_CONN_CON;
			sock->state = TS_DATA_XFER;
		} else {
			struct T_discon_ind *dis;
			SOLD("some error");
			it = timod_mkctl(sizeof(*dis));
			if (!it) {
				putpage(buf);
				return -ENOMEM;
			}
			SOLD("got primsg");
			dis = (struct T_discon_ind *)&it->type;
			dis->PRIM_type = T_DISCON_IND;
			dis->DISCON_reason = -error;	/* FIXME: convert this as in iABI_errors() */
			dis->SEQ_number = 0;
		}
		putpage(buf);
		timod_ok(fd, T_CONN_REQ);
		it->pri = 0;
		timod_queue_end(fd, it);
		SOLD("CONNECT done");
		return 0;
	}
	case T_OPTMGMT_REQ:
	{
		struct T_optmgmt_req req;
		SOLD("OPTMGMT_REQ");
		if (copy_from_user(&req, ctl_buf, sizeof(req)))
			return -EFAULT;
		SOLD("got req");
		return timod_optmgmt(fd, req.MGMT_flags,
				req.OPT_offset > 0 ? ctl_buf + req.OPT_offset : NULL,
				req.OPT_length, 1);
	}
	case T_UNITDATA_REQ:
	{
		struct T_unitdata_req req;
		
		int err;
		SOLD("T_UNITDATA_REQ");
		if (sock->state != TS_IDLE && sock->state != TS_DATA_XFER) {
			timod_error(fd, T_CONN_REQ, TOUTSTATE, 0);
			return 0;
		}
		SOLD("state ok");
		if (copy_from_user(&req, ctl_buf, sizeof(req))) {
			timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
			return 0;
		}
		SOLD("got ctl req");
#ifdef DEBUG_SOLARIS		
		{
			char * ptr = ctl_buf+req.DEST_offset;
			int len = req.DEST_length;
			printk("socket address (%d bytes): ",len);
			while( len-- ) {
				char c;
				if (get_user(c,ptr))
					printk("??");
				else
					printk("%02x",(unsigned char)c);
				ptr++;
			}
			printk("\n");
		}
#endif		
		err = sys_sendto(fd, data_buf, data_len, 0, req.DEST_length > 0 ? (struct sockaddr __user *)(ctl_buf+req.DEST_offset) : NULL, req.DEST_length);
		if (err == data_len)
			return 0;
		if(err >= 0) {
			printk("timod: sendto failed to send all the data\n");
			return 0;
		}
		timod_error(fd, T_CONN_REQ, TSYSERR, -err);
		return 0;
	}
	default:
		printk(KERN_INFO "timod_putmsg: unsupported command %u.\n", ret);
		break;
	}
	return -EINVAL;
}

int timod_getmsg(unsigned int fd, char __user *ctl_buf, int ctl_maxlen, s32 __user *ctl_len,
			char __user *data_buf, int data_maxlen, s32 __user *data_len, int *flags_p)
{
	int error;
	int oldflags;
	struct file *filp;
	struct inode *ino;
	struct fdtable *fdt;
	struct sol_socket_struct *sock;
	struct T_unitdata_ind udi;
	mm_segment_t old_fs = get_fs();
	long args[6];
	char __user *tmpbuf;
	int tmplen;
	int (*sys_socketcall)(int, unsigned long __user *) =
		(int (*)(int, unsigned long __user *))SYS(socketcall);
	int (*sys_recvfrom)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *);
	
	SOLD("entry");
	SOLDD(("%u %p %d %p %p %d %p %d\n", fd, ctl_buf, ctl_maxlen, ctl_len, data_buf, data_maxlen, data_len, *flags_p));
	fdt = files_fdtable(current->files);
	filp = fdt->fd[fd];
	ino = filp->f_path.dentry->d_inode;
	sock = (struct sol_socket_struct *)filp->private_data;
	SOLDD(("%p %p\n", sock->pfirst, sock->pfirst ? sock->pfirst->next : NULL));
	if ( ctl_maxlen > 0 && !sock->pfirst && SOCKET_I(ino)->type == SOCK_STREAM
		&& sock->state == TS_IDLE) {
		SOLD("calling LISTEN");
		args[0] = fd;
		args[1] = -1;
		set_fs(KERNEL_DS);
		sys_socketcall(SYS_LISTEN, args);
		set_fs(old_fs);
		SOLD("LISTEN done");
	}
	if (!(filp->f_flags & O_NONBLOCK)) {
		struct poll_wqueues wait_table;
		poll_table *wait;

		poll_initwait(&wait_table);
		wait = &wait_table.pt;
		for(;;) {
			SOLD("loop");
			set_current_state(TASK_INTERRUPTIBLE);
			/* ! ( l<0 || ( l>=0 && ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */ 
			/* ( ! l<0 && ! ( l>=0 && ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */ 
			/* ( l>=0 && ( ! l>=0 || ! ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */ 
			/* ( l>=0 && ( l<0 || ( pfirst && ! (flags == HIPRI && pri != HIPRI) ) ) ) */ 
			/* ( l>=0 && ( l<0 || ( pfirst && (flags != HIPRI || pri == HIPRI) ) ) ) */ 
			/* ( l>=0 && ( pfirst && (flags != HIPRI || pri == HIPRI) ) ) */ 
			if (ctl_maxlen >= 0 && sock->pfirst && (*flags_p != MSG_HIPRI || sock->pfirst->pri == MSG_HIPRI))
				break;
			SOLD("cond 1 passed");
			if (
			#if 1
				*flags_p != MSG_HIPRI &&
			#endif
				((filp->f_op->poll(filp, wait) & POLLIN) ||
				(filp->f_op->poll(filp, NULL) & POLLIN) ||
				signal_pending(current))
			) {
				break;
			}
			if( *flags_p == MSG_HIPRI ) {
				SOLD("avoiding lockup");
				break ;
			}
			if(wait_table.error) {
				SOLD("wait-table error");
				poll_freewait(&wait_table);
				return wait_table.error;
			}
			SOLD("scheduling");
			schedule();
		}
		SOLD("loop done");
		current->state = TASK_RUNNING;
		poll_freewait(&wait_table);
		if (signal_pending(current)) {
			SOLD("signal pending");
			return -EINTR;
		}
	}
	if (ctl_maxlen >= 0 && sock->pfirst) {
		struct T_primsg *it = sock->pfirst;
		int l = min_t(int, ctl_maxlen, it->length);
		SCHECK_MAGIC((char*)((u64)(((char *)&it->type)+sock->offset+it->length+7)&~7),MKCTL_MAGIC);
		SOLD("purting ctl data");
		if(copy_to_user(ctl_buf,
			(char*)&it->type + sock->offset, l))
			return -EFAULT;
		SOLD("pur it");
		if(put_user(l, ctl_len))
			return -EFAULT;
		SOLD("set ctl_len");
		*flags_p = it->pri;
		it->length -= l;
		if (it->length) {
			SOLD("more ctl");
			sock->offset += l;
			return MORECTL;
		} else {
			SOLD("removing message");
			sock->pfirst = it->next;
			if (!sock->pfirst)
				sock->plast = NULL;
			SOLDD(("getmsg kfree %016lx->%016lx\n", it, sock->pfirst));
			mykfree(it);
			sock->offset = 0;
			SOLD("ctl done");
			return 0;
		}
	}
	*flags_p = 0;
	if (ctl_maxlen >= 0) {
		SOLD("ACCEPT perhaps?");
		if (SOCKET_I(ino)->type == SOCK_STREAM && sock->state == TS_IDLE) {
			struct T_conn_ind ind;
			char *buf = getpage();
			int len = BUF_SIZE;

			SOLD("trying ACCEPT");
			if (put_user(ctl_maxlen - sizeof(ind), ctl_len))
				return -EFAULT;
			args[0] = fd;
			args[1] = (long)buf;
			args[2] = (long)&len;
			oldflags = filp->f_flags;
			filp->f_flags |= O_NONBLOCK;
			SOLD("calling ACCEPT");
			set_fs(KERNEL_DS);
			error = sys_socketcall(SYS_ACCEPT, args);
			set_fs(old_fs);
			filp->f_flags = oldflags;
			if (error < 0) {
				SOLD("some error");
				putpage(buf);
				return error;
			}
			if (error) {
				SOLD("connect");
				putpage(buf);
				if (sizeof(ind) > ctl_maxlen) {
					SOLD("generating CONN_IND");
					ind.PRIM_type = T_CONN_IND;
					ind.SRC_length = len;
					ind.SRC_offset = sizeof(ind);
					ind.OPT_length = ind.OPT_offset = 0;
					ind.SEQ_number = error;
					if(copy_to_user(ctl_buf, &ind, sizeof(ind))||
					   put_user(sizeof(ind)+ind.SRC_length,ctl_len))
						return -EFAULT;
					SOLD("CONN_IND created");
				}
				if (data_maxlen >= 0)
					put_user(0, data_len);
				SOLD("CONN_IND done");
				return 0;
			}
			if (len>ctl_maxlen) {
				SOLD("data don't fit");
				putpage(buf);
				return -EFAULT;		/* XXX - is this ok ? */
			}
			if(copy_to_user(ctl_buf,buf,len) || put_user(len,ctl_len)){
				SOLD("can't copy data");
				putpage(buf);
				return -EFAULT;
			}
			SOLD("ACCEPT done");
			putpage(buf);
		}
	}
	SOLD("checking data req");
	if (data_maxlen <= 0) {
		if (data_maxlen == 0)
			put_user(0, data_len);
		if (ctl_maxlen >= 0)
			put_user(0, ctl_len);
		return -EAGAIN;
	}
	SOLD("wants data");
	if (ctl_maxlen > sizeof(udi) && sock->state == TS_IDLE) {
		SOLD("udi fits");
		tmpbuf = ctl_buf + sizeof(udi);
		tmplen = ctl_maxlen - sizeof(udi);
	} else {
		SOLD("udi does not fit");
		tmpbuf = NULL;
		tmplen = 0;
	}
	if (put_user(tmplen, ctl_len))
		return -EFAULT;
	SOLD("set ctl_len");
	oldflags = filp->f_flags;
	filp->f_flags |= O_NONBLOCK;
	SOLD("calling recvfrom");
	sys_recvfrom = (int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *))SYS(recvfrom);
	error = sys_recvfrom(fd, data_buf, data_maxlen, 0, (struct sockaddr __user *)tmpbuf, ctl_len);
	filp->f_flags = oldflags;
	if (error < 0)
		return error;
	SOLD("error >= 0" ) ;
	if (error && ctl_maxlen > sizeof(udi) && sock->state == TS_IDLE) {
		SOLD("generating udi");
		udi.PRIM_type = T_UNITDATA_IND;
		if (get_user(udi.SRC_length, ctl_len))
			return -EFAULT;
		udi.SRC_offset = sizeof(udi);
		udi.OPT_length = udi.OPT_offset = 0;
		if (copy_to_user(ctl_buf, &udi, sizeof(udi)) ||
		    put_user(sizeof(udi)+udi.SRC_length, ctl_len))
			return -EFAULT;
		SOLD("udi done");
	} else {
		if (put_user(0, ctl_len))
			return -EFAULT;
	}
	put_user(error, data_len);
	SOLD("done");
	return 0;
}

asmlinkage int solaris_getmsg(unsigned int fd, u32 arg1, u32 arg2, u32 arg3)
{
	struct file *filp;
	struct inode *ino;
	struct strbuf __user *ctlptr;
	struct strbuf __user *datptr;
	struct strbuf ctl, dat;
	int __user *flgptr;
	int flags;
	int error = -EBADF;
	struct fdtable *fdt;

	SOLD("entry");
	lock_kernel();
	if (fd >= sysctl_nr_open)
		goto out;

	fdt = files_fdtable(current->files);
	filp = fdt->fd[fd];
	if(!filp) goto out;

	ino = filp->f_path.dentry->d_inode;
	if (!ino || !S_ISSOCK(ino->i_mode))
		goto out;

	ctlptr = (struct strbuf __user *)A(arg1);
	datptr = (struct strbuf __user *)A(arg2);
	flgptr = (int __user *)A(arg3);

	error = -EFAULT;

	if (ctlptr) {
		if (copy_from_user(&ctl,ctlptr,sizeof(struct strbuf)) || 
		    put_user(-1,&ctlptr->len))
			goto out;
	} else
		ctl.maxlen = -1;

	if (datptr) {
		if (copy_from_user(&dat,datptr,sizeof(struct strbuf)) || 
		    put_user(-1,&datptr->len))
			goto out;
	} else
		dat.maxlen = -1;

	if (get_user(flags,flgptr))
		goto out;

	switch (flags) {
	case 0:
	case MSG_HIPRI:
	case MSG_ANY:
	case MSG_BAND:
		break;
	default:
		error = -EINVAL;
		goto out;
	}

	error = timod_getmsg(fd,A(ctl.buf),ctl.maxlen,&ctlptr->len,
				A(dat.buf),dat.maxlen,&datptr->len,&flags);

	if (!error && put_user(flags,flgptr))
		error = -EFAULT;
out:
	unlock_kernel();
	SOLD("done");
	return error;
}

asmlinkage int solaris_putmsg(unsigned int fd, u32 arg1, u32 arg2, u32 arg3)
{
	struct file *filp;
	struct inode *ino;
	struct strbuf __user *ctlptr;
	struct strbuf __user *datptr;
	struct strbuf ctl, dat;
	int flags = (int) arg3;
	int error = -EBADF;
	struct fdtable *fdt;

	SOLD("entry");
	lock_kernel();
	if (fd >= sysctl_nr_open)
		goto out;

	fdt = files_fdtable(current->files);
	filp = fdt->fd[fd];
	if(!filp) goto out;

	ino = filp->f_path.dentry->d_inode;
	if (!ino) goto out;

	if (!S_ISSOCK(ino->i_mode) &&
		(imajor(ino) != 30 || iminor(ino) != 1))
		goto out;

	ctlptr = A(arg1);
	datptr = A(arg2);

	error = -EFAULT;

	if (ctlptr) {
		if (copy_from_user(&ctl,ctlptr,sizeof(ctl)))
			goto out;
		if (ctl.len < 0 && flags) {
			error = -EINVAL;
			goto out;
		}
	} else {
		ctl.len = 0;
		ctl.buf = 0;
	}

	if (datptr) {
		if (copy_from_user(&dat,datptr,sizeof(dat)))
			goto out;
	} else {
		dat.len = 0;
		dat.buf = 0;
	}

	error = timod_putmsg(fd,A(ctl.buf),ctl.len,
				A(dat.buf),dat.len,flags);
out:
	unlock_kernel();
	SOLD("done");
	return error;
}