/
subr_prf.c
1595 lines (1341 loc) · 32.1 KB
/
subr_prf.c
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
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* $NetBSD: subr_prf.c,v 1.185 2020/07/11 07:14:53 maxv Exp $ */
/*-
* Copyright (c) 1986, 1988, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)subr_prf.c 8.4 (Berkeley) 5/4/95
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: subr_prf.c,v 1.185 2020/07/11 07:14:53 maxv Exp $");
#ifdef _KERNEL_OPT
#include "opt_ddb.h"
#include "opt_kgdb.h"
#include "opt_dump.h"
#include "opt_rnd_printf.h"
#endif
#include <sys/param.h>
#include <sys/stdint.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <sys/msgbuf.h>
#include <sys/proc.h>
#include <sys/ioctl.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/tty.h>
#include <sys/tprintf.h>
#include <sys/spldebug.h>
#include <sys/syslog.h>
#include <sys/kprintf.h>
#include <sys/atomic.h>
#include <sys/kernel.h>
#include <sys/cpu.h>
#include <sys/rndsource.h>
#include <sys/kmem.h>
#include <dev/cons.h>
#include <net/if.h>
static kmutex_t kprintf_mtx;
static bool kprintf_inited = false;
#ifdef KGDB
#include <sys/kgdb.h>
#endif
#ifdef DDB
#include <ddb/ddbvar.h> /* db_panic */
#include <ddb/db_output.h> /* db_printf, db_putchar prototypes */
#endif
/*
* defines
*/
#define KLOG_PRI 0x80000000
/*
* local prototypes
*/
static void putchar(int, int, struct tty *);
/*
* globals
*/
extern struct tty *constty; /* pointer to console "window" tty */
extern int log_open; /* subr_log: is /dev/klog open? */
const char *panicstr; /* arg to first call to panic (used as a flag
to indicate that panic has already been called). */
struct cpu_info *paniccpu; /* cpu that first paniced */
long panicstart, panicend; /* position in the msgbuf of the start and
end of the formatted panicstr. */
int doing_shutdown; /* set to indicate shutdown in progress */
#ifdef RND_PRINTF
static krndsource_t rnd_printf_source;
#endif
#ifndef DUMP_ON_PANIC
#define DUMP_ON_PANIC 1
#endif
int dumponpanic = DUMP_ON_PANIC;
/*
* v_putc: routine to putc on virtual console
*
* the v_putc pointer can be used to redirect the console cnputc elsewhere
* [e.g. to a "virtual console"].
*/
void (*v_putc)(int) = cnputc; /* start with cnputc (normal cons) */
void (*v_flush)(void) = cnflush; /* start with cnflush (normal cons) */
const char hexdigits[] = "0123456789abcdef";
const char HEXDIGITS[] = "0123456789ABCDEF";
/*
* functions
*/
/*
* Locking is inited fairly early in MI bootstrap. Before that
* prints are done unlocked. But that doesn't really matter,
* since nothing can preempt us before interrupts are enabled.
*/
void
kprintf_init(void)
{
KASSERT(!kprintf_inited && cold); /* not foolproof, but ... */
mutex_init(&kprintf_mtx, MUTEX_DEFAULT, IPL_HIGH);
#ifdef RND_PRINTF
rnd_attach_source(&rnd_printf_source, "printf", RND_TYPE_UNKNOWN,
RND_FLAG_COLLECT_TIME|RND_FLAG_COLLECT_VALUE);
#endif
kprintf_inited = true;
}
void
kprintf_lock(void)
{
if (__predict_true(kprintf_inited))
mutex_enter(&kprintf_mtx);
}
void
kprintf_unlock(void)
{
if (__predict_true(kprintf_inited)) {
/* assert kprintf wasn't somehow inited while we were in */
KASSERT(mutex_owned(&kprintf_mtx));
mutex_exit(&kprintf_mtx);
}
}
/*
* twiddle: spin a little propellor on the console.
*/
void
twiddle(void)
{
static const char twiddle_chars[] = "|/-\\";
static int pos;
kprintf_lock();
putchar(twiddle_chars[pos++ & 3], TOCONS|NOTSTAMP, NULL);
putchar('\b', TOCONS|NOTSTAMP, NULL);
kprintf_unlock();
}
/*
* panic: handle an unresolvable fatal error
*
* prints "panic: <message>" and reboots. if called twice (i.e. recursive
* call) we avoid trying to dump and just reboot (to avoid recursive panics).
*/
void
panic(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vpanic(fmt, ap);
va_end(ap);
}
void
vpanic(const char *fmt, va_list ap)
{
CPU_INFO_ITERATOR cii;
struct cpu_info *ci, *oci;
int bootopt;
static char scratchstr[384]; /* stores panic message */
spldebug_stop();
if (lwp0.l_cpu && curlwp) {
/*
* Disable preemption. If already panicing on another CPU, sit
* here and spin until the system is rebooted. Allow the CPU that
* first paniced to panic again.
*/
kpreempt_disable();
ci = curcpu();
oci = atomic_cas_ptr((void *)&paniccpu, NULL, ci);
if (oci != NULL && oci != ci) {
/* Give interrupts a chance to try and prevent deadlock. */
for (;;) {
#ifndef _RUMPKERNEL /* XXXpooka: temporary build fix, see kern/40505 */
DELAY(10);
#endif /* _RUMPKERNEL */
}
}
/*
* Convert the current thread to a bound thread and prevent all
* CPUs from scheduling unbound jobs. Do so without taking any
* locks.
*/
curlwp->l_pflag |= LP_BOUND;
for (CPU_INFO_FOREACH(cii, ci)) {
ci->ci_schedstate.spc_flags |= SPCF_OFFLINE;
}
}
bootopt = RB_AUTOBOOT | RB_NOSYNC;
if (!doing_shutdown) {
if (dumponpanic)
bootopt |= RB_DUMP;
} else
printf("Skipping crash dump on recursive panic\n");
doing_shutdown = 1;
if (logenabled(msgbufp))
panicstart = msgbufp->msg_bufx;
printf("panic: ");
if (panicstr == NULL) {
/* first time in panic - store fmt first for precaution */
panicstr = fmt;
vsnprintf(scratchstr, sizeof(scratchstr), fmt, ap);
printf("%s", scratchstr);
panicstr = scratchstr;
} else {
vprintf(fmt, ap);
}
printf("\n");
if (logenabled(msgbufp))
panicend = msgbufp->msg_bufx;
#ifdef KGDB
kgdb_panic();
#endif
#ifdef KADB
if (boothowto & RB_KDB)
kdbpanic();
#endif
#ifdef DDB
db_panic();
#endif
kern_reboot(bootopt, NULL);
}
/*
* kernel logging functions: log, logpri, addlog
*/
/*
* log: write to the log buffer
*
* => will not sleep [so safe to call from interrupt]
* => will log to console if /dev/klog isn't open
*/
void
log(int level, const char *fmt, ...)
{
va_list ap;
kprintf_lock();
klogpri(level); /* log the level first */
va_start(ap, fmt);
kprintf(fmt, TOLOG, NULL, NULL, ap);
va_end(ap);
if (!log_open) {
va_start(ap, fmt);
kprintf(fmt, TOCONS, NULL, NULL, ap);
va_end(ap);
}
kprintf_unlock();
logwakeup(); /* wake up anyone waiting for log msgs */
}
/*
* vlog: write to the log buffer [already have va_list]
*/
void
vlog(int level, const char *fmt, va_list ap)
{
va_list cap;
va_copy(cap, ap);
kprintf_lock();
klogpri(level); /* log the level first */
kprintf(fmt, TOLOG, NULL, NULL, ap);
if (!log_open)
kprintf(fmt, TOCONS, NULL, NULL, cap);
kprintf_unlock();
va_end(cap);
logwakeup(); /* wake up anyone waiting for log msgs */
}
/*
* logpri: log the priority level to the klog
*/
void
logpri(int level)
{
kprintf_lock();
klogpri(level);
kprintf_unlock();
}
/*
* Note: we must be in the mutex here!
*/
void
klogpri(int level)
{
KASSERT((level & KLOG_PRI) == 0);
putchar(level | KLOG_PRI, TOLOG, NULL);
}
/*
* addlog: add info to previous log message
*/
void
addlog(const char *fmt, ...)
{
va_list ap;
kprintf_lock();
va_start(ap, fmt);
kprintf(fmt, TOLOG, NULL, NULL, ap);
va_end(ap);
if (!log_open) {
va_start(ap, fmt);
kprintf(fmt, TOCONS, NULL, NULL, ap);
va_end(ap);
}
kprintf_unlock();
logwakeup();
}
static void
putone(int c, int flags, struct tty *tp)
{
if (panicstr)
constty = NULL;
if ((flags & TOCONS) && tp == NULL && constty) {
tp = constty;
flags |= TOTTY;
}
if ((flags & TOTTY) && tp &&
tputchar(c, flags, tp) < 0 &&
(flags & TOCONS) && tp == constty)
constty = NULL;
if ((flags & TOLOG) &&
c != '\0' && c != '\r' && c != 0177)
logputchar(c);
if ((flags & TOCONS) && constty == NULL && c != '\0')
(*v_putc)(c);
}
static void
putlogpri(int level)
{
char *p;
char snbuf[KPRINTF_BUFSIZE];
putone('<', TOLOG, NULL);
snprintf(snbuf, sizeof(snbuf), "%d", level);
for (p = snbuf ; *p ; p++)
putone(*p, TOLOG, NULL);
putone('>', TOLOG, NULL);
}
#ifndef KLOG_NOTIMESTAMP
static int needtstamp = 1;
int log_ts_prec = 7;
static void
addtstamp(int flags, struct tty *tp)
{
char buf[64];
struct timespec ts;
int n, prec;
long fsec;
prec = log_ts_prec;
if (prec < 0) {
prec = 0;
log_ts_prec = prec;
} else if (prec > 9) {
prec = 9;
log_ts_prec = prec;
}
getnanouptime(&ts);
for (n = prec, fsec = ts.tv_nsec; n < 8; n++)
fsec /= 10;
if (n < 9)
fsec = (fsec / 10) + ((fsec % 10) >= 5);
n = snprintf(buf, sizeof(buf), "[% 4jd.%.*ld] ",
(intmax_t)ts.tv_sec, prec, fsec);
for (int i = 0; i < n; i++)
putone(buf[i], flags, tp);
}
#endif
/*
* putchar: print a single character on console or user terminal.
*
* => if console, then the last MSGBUFS chars are saved in msgbuf
* for inspection later (e.g. dmesg/syslog)
* => we must already be in the mutex!
*/
static void
putchar(int c, int flags, struct tty *tp)
{
if (c & KLOG_PRI) {
putlogpri(c & ~KLOG_PRI);
return;
}
#ifndef KLOG_NOTIMESTAMP
if (c != '\0' && c != '\n' && needtstamp && (flags & NOTSTAMP) == 0) {
addtstamp(flags, tp);
needtstamp = 0;
}
if (c == '\n')
needtstamp = 1;
#endif
putone(c, flags, tp);
#ifdef DDB
if (flags & TODDB) {
db_putchar(c);
return;
}
#endif
#ifdef RND_PRINTF
if (__predict_true(kprintf_inited)) {
unsigned char ch = c;
rnd_add_data(&rnd_printf_source, &ch, 1, 0);
}
#endif
}
/*
* tablefull: warn that a system table is full
*/
void
tablefull(const char *tab, const char *hint)
{
if (hint)
log(LOG_ERR, "%s: table is full - %s\n", tab, hint);
else
log(LOG_ERR, "%s: table is full\n", tab);
}
/*
* uprintf: print to the controlling tty of the current process
*
* => we may block if the tty queue is full
* => no message is printed if the queue doesn't clear in a reasonable
* time
*/
void
uprintf(const char *fmt, ...)
{
struct proc *p = curproc;
va_list ap;
/* mutex_enter(&proc_lock); XXXSMP */
if (p->p_lflag & PL_CONTROLT && p->p_session->s_ttyvp) {
/* No mutex needed; going to process TTY. */
va_start(ap, fmt);
kprintf(fmt, TOTTY, p->p_session->s_ttyp, NULL, ap);
va_end(ap);
}
/* mutex_exit(&proc_lock); XXXSMP */
}
void
uprintf_locked(const char *fmt, ...)
{
struct proc *p = curproc;
va_list ap;
if (p->p_lflag & PL_CONTROLT && p->p_session->s_ttyvp) {
/* No mutex needed; going to process TTY. */
va_start(ap, fmt);
kprintf(fmt, TOTTY, p->p_session->s_ttyp, NULL, ap);
va_end(ap);
}
}
/*
* tprintf functions: used to send messages to a specific process
*
* usage:
* get a tpr_t handle on a process "p" by using "tprintf_open(p)"
* use the handle when calling "tprintf"
* when done, do a "tprintf_close" to drop the handle
*/
/*
* tprintf_open: get a tprintf handle on a process "p"
*
* => returns NULL if process can't be printed to
*/
tpr_t
tprintf_open(struct proc *p)
{
tpr_t cookie;
cookie = NULL;
mutex_enter(&proc_lock);
if (p->p_lflag & PL_CONTROLT && p->p_session->s_ttyvp) {
proc_sesshold(p->p_session);
cookie = (tpr_t)p->p_session;
}
mutex_exit(&proc_lock);
return cookie;
}
/*
* tprintf_close: dispose of a tprintf handle obtained with tprintf_open
*/
void
tprintf_close(tpr_t sess)
{
if (sess) {
mutex_enter(&proc_lock);
/* Releases proc_lock. */
proc_sessrele((struct session *)sess);
}
}
/*
* tprintf: given tprintf handle to a process [obtained with tprintf_open],
* send a message to the controlling tty for that process.
*
* => also sends message to /dev/klog
*/
void
tprintf(tpr_t tpr, const char *fmt, ...)
{
struct session *sess = (struct session *)tpr;
struct tty *tp = NULL;
int flags = TOLOG;
va_list ap;
/* mutex_enter(&proc_lock); XXXSMP */
if (sess && sess->s_ttyvp && ttycheckoutq(sess->s_ttyp, 0)) {
flags |= TOTTY;
tp = sess->s_ttyp;
}
kprintf_lock();
klogpri(LOG_INFO);
va_start(ap, fmt);
kprintf(fmt, flags, tp, NULL, ap);
va_end(ap);
kprintf_unlock();
/* mutex_exit(&proc_lock); XXXSMP */
logwakeup();
}
/*
* ttyprintf: send a message to a specific tty
*
* => should be used only by tty driver or anything that knows the
* underlying tty will not be revoked(2)'d away. [otherwise,
* use tprintf]
*/
void
ttyprintf(struct tty *tp, const char *fmt, ...)
{
va_list ap;
/* No mutex needed; going to process TTY. */
va_start(ap, fmt);
kprintf(fmt, TOTTY, tp, NULL, ap);
va_end(ap);
}
#ifdef DDB
/*
* db_printf: printf for DDB (via db_putchar)
*/
void
db_printf(const char *fmt, ...)
{
va_list ap;
/* No mutex needed; DDB pauses all processors. */
va_start(ap, fmt);
kprintf(fmt, TODDB, NULL, NULL, ap);
va_end(ap);
if (db_tee_msgbuf) {
va_start(ap, fmt);
kprintf(fmt, TOLOG, NULL, NULL, ap);
va_end(ap);
}
}
void
db_vprintf(const char *fmt, va_list ap)
{
va_list cap;
va_copy(cap, ap);
/* No mutex needed; DDB pauses all processors. */
kprintf(fmt, TODDB, NULL, NULL, ap);
if (db_tee_msgbuf)
kprintf(fmt, TOLOG, NULL, NULL, cap);
va_end(cap);
}
#endif /* DDB */
static void
kprintf_internal(const char *fmt, int oflags, void *vp, char *sbuf, ...)
{
va_list ap;
va_start(ap, sbuf);
(void)kprintf(fmt, oflags, vp, sbuf, ap);
va_end(ap);
}
/*
* Device autoconfiguration printf routines. These change their
* behavior based on the AB_* flags in boothowto. If AB_SILENT
* is set, messages never go to the console (but they still always
* go to the log). AB_VERBOSE overrides AB_SILENT.
*/
/*
* aprint_normal: Send to console unless AB_QUIET. Always goes
* to the log.
*/
static void
aprint_normal_internal(const char *prefix, const char *fmt, va_list ap)
{
int flags = TOLOG;
if ((boothowto & (AB_SILENT|AB_QUIET)) == 0 ||
(boothowto & AB_VERBOSE) != 0)
flags |= TOCONS;
kprintf_lock();
if (prefix)
kprintf_internal("%s: ", flags, NULL, NULL, prefix);
kprintf(fmt, flags, NULL, NULL, ap);
kprintf_unlock();
if (!panicstr)
logwakeup();
}
void
aprint_normal(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
aprint_normal_internal(NULL, fmt, ap);
va_end(ap);
}
void
aprint_normal_dev(device_t dv, const char *fmt, ...)
{
va_list ap;
KASSERT(dv != NULL);
va_start(ap, fmt);
aprint_normal_internal(device_xname(dv), fmt, ap);
va_end(ap);
}
void
aprint_normal_ifnet(struct ifnet *ifp, const char *fmt, ...)
{
va_list ap;
KASSERT(ifp != NULL);
va_start(ap, fmt);
aprint_normal_internal(ifp->if_xname, fmt, ap);
va_end(ap);
}
/*
* aprint_error: Send to console unless AB_QUIET. Always goes
* to the log. Also counts the number of times called so other
* parts of the kernel can report the number of errors during a
* given phase of system startup.
*/
static int aprint_error_count;
int
aprint_get_error_count(void)
{
int count;
kprintf_lock();
count = aprint_error_count;
aprint_error_count = 0;
kprintf_unlock();
return (count);
}
static void
aprint_error_internal(const char *prefix, const char *fmt, va_list ap)
{
int flags = TOLOG;
if ((boothowto & (AB_SILENT|AB_QUIET)) == 0 ||
(boothowto & AB_VERBOSE) != 0)
flags |= TOCONS;
kprintf_lock();
aprint_error_count++;
if (prefix)
kprintf_internal("%s: ", flags, NULL, NULL, prefix);
kprintf_internal("autoconfiguration error: ", TOLOG, NULL, NULL);
kprintf(fmt, flags, NULL, NULL, ap);
kprintf_unlock();
if (!panicstr)
logwakeup();
}
void
aprint_error(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
aprint_error_internal(NULL, fmt, ap);
va_end(ap);
}
void
aprint_error_dev(device_t dv, const char *fmt, ...)
{
va_list ap;
KASSERT(dv != NULL);
va_start(ap, fmt);
aprint_error_internal(device_xname(dv), fmt, ap);
va_end(ap);
}
void
aprint_error_ifnet(struct ifnet *ifp, const char *fmt, ...)
{
va_list ap;
KASSERT(ifp != NULL);
va_start(ap, fmt);
aprint_error_internal(ifp->if_xname, fmt, ap);
va_end(ap);
}
/*
* aprint_naive: Send to console only if AB_QUIET. Never goes
* to the log.
*/
static void
aprint_naive_internal(const char *prefix, const char *fmt, va_list ap)
{
if ((boothowto & (AB_QUIET|AB_SILENT|AB_VERBOSE)) != AB_QUIET)
return;
kprintf_lock();
if (prefix)
kprintf_internal("%s: ", TOCONS, NULL, NULL, prefix);
kprintf(fmt, TOCONS, NULL, NULL, ap);
kprintf_unlock();
}
void
aprint_naive(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
aprint_naive_internal(NULL, fmt, ap);
va_end(ap);
}
void
aprint_naive_dev(device_t dv, const char *fmt, ...)
{
va_list ap;
KASSERT(dv != NULL);
va_start(ap, fmt);
aprint_naive_internal(device_xname(dv), fmt, ap);
va_end(ap);
}
void
aprint_naive_ifnet(struct ifnet *ifp, const char *fmt, ...)
{
va_list ap;
KASSERT(ifp != NULL);
va_start(ap, fmt);
aprint_naive_internal(ifp->if_xname, fmt, ap);
va_end(ap);
}
/*
* aprint_verbose: Send to console only if AB_VERBOSE. Always
* goes to the log.
*/
static void
aprint_verbose_internal(const char *prefix, const char *fmt, va_list ap)
{
int flags = TOLOG;
if (boothowto & AB_VERBOSE)
flags |= TOCONS;
kprintf_lock();
if (prefix)
kprintf_internal("%s: ", flags, NULL, NULL, prefix);
kprintf(fmt, flags, NULL, NULL, ap);
kprintf_unlock();
if (!panicstr)
logwakeup();
}
void
aprint_verbose(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
aprint_verbose_internal(NULL, fmt, ap);
va_end(ap);
}
void
aprint_verbose_dev(device_t dv, const char *fmt, ...)
{
va_list ap;
KASSERT(dv != NULL);
va_start(ap, fmt);
aprint_verbose_internal(device_xname(dv), fmt, ap);
va_end(ap);
}
void
aprint_verbose_ifnet(struct ifnet *ifp, const char *fmt, ...)
{
va_list ap;
KASSERT(ifp != NULL);
va_start(ap, fmt);
aprint_verbose_internal(ifp->if_xname, fmt, ap);
va_end(ap);
}
/*
* aprint_debug: Send to console and log only if AB_DEBUG.
*/
static void
aprint_debug_internal(const char *prefix, const char *fmt, va_list ap)
{
if ((boothowto & AB_DEBUG) == 0)
return;
kprintf_lock();
if (prefix)
kprintf_internal("%s: ", TOCONS | TOLOG, NULL, NULL, prefix);
kprintf(fmt, TOCONS | TOLOG, NULL, NULL, ap);
kprintf_unlock();
}
void
aprint_debug(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
aprint_debug_internal(NULL, fmt, ap);
va_end(ap);
}
void
aprint_debug_dev(device_t dv, const char *fmt, ...)
{
va_list ap;