2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1986, 1988, 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)subr_prf.c 8.3 (Berkeley) 1/21/94
39 #include <sys/cdefs.h>
42 #include "opt_printf.h"
45 #include <sys/param.h>
47 #include <sys/systm.h>
50 #include <sys/mutex.h>
52 #include <sys/kernel.h>
53 #include <sys/msgbuf.h>
54 #include <sys/malloc.h>
57 #include <sys/stddef.h>
58 #include <sys/sysctl.h>
59 #include <sys/tslog.h>
61 #include <sys/syslog.h>
67 #include <sys/ctype.h>
75 * Note that stdarg.h and the ANSI style va_start macro is used for both
76 * ANSI and traditional C compilers.
79 #include <machine/stdarg.h>
85 * This is needed for sbuf_putbuf() when compiled into userland. Due to the
86 * shared nature of this file, it's the only place to put it.
98 /* Max number conversion buffer length: a u_quad_t in base 2, plus NUL byte. */
99 #define MAXNBUF (sizeof(intmax_t) * NBBY + 1)
111 struct snprintf_arg {
118 static void msglogchar(int c, int pri);
119 static void msglogstr(char *str, int pri, int filter_cr);
120 static void prf_putbuf(char *bufr, int flags, int pri);
121 static void putchar(int ch, void *arg);
122 static char *ksprintn(char *nbuf, uintmax_t num, int base, int *len, int upper);
123 static void snprintf_func(int ch, void *arg);
125 static bool msgbufmapped; /* Set when safe to use msgbuf */
127 struct msgbuf *msgbufp;
130 #define BOOT_TAG_SZ 32
133 /* Tag used to mark the start of a boot in dmesg */
134 #define BOOT_TAG "---<<BOOT>>---"
137 static char current_boot_tag[BOOT_TAG_SZ + 1] = BOOT_TAG;
138 SYSCTL_STRING(_kern, OID_AUTO, boot_tag, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
139 current_boot_tag, 0, "Tag added to dmesg at start of boot");
141 static int log_console_output = 1;
142 SYSCTL_INT(_kern, OID_AUTO, log_console_output, CTLFLAG_RWTUN,
143 &log_console_output, 0, "Duplicate console output to the syslog");
146 * See the comment in log_console() below for more explanation of this.
148 static int log_console_add_linefeed;
149 SYSCTL_INT(_kern, OID_AUTO, log_console_add_linefeed, CTLFLAG_RWTUN,
150 &log_console_add_linefeed, 0, "log_console() adds extra newlines");
152 static int always_console_output;
153 SYSCTL_INT(_kern, OID_AUTO, always_console_output, CTLFLAG_RWTUN,
154 &always_console_output, 0, "Always output to console despite TIOCCONS");
157 * Warn that a system table is full.
160 tablefull(const char *tab)
163 log(LOG_ERR, "%s: table is full\n", tab);
167 * Uprintf prints to the controlling terminal for the current process.
170 uprintf(const char *fmt, ...)
173 struct putchar_arg pca;
179 if (TD_IS_IDLETHREAD(td))
182 if (td->td_proc == initproc) {
183 /* Produce output when we fail to load /sbin/init: */
185 retval = vprintf(fmt, ap);
190 sx_slock(&proctree_lock);
193 if ((p->p_flag & P_CONTROLT) == 0) {
195 sx_sunlock(&proctree_lock);
198 SESS_LOCK(p->p_session);
199 pca.tty = p->p_session->s_ttyp;
200 SESS_UNLOCK(p->p_session);
202 if (pca.tty == NULL) {
203 sx_sunlock(&proctree_lock);
210 sx_sunlock(&proctree_lock);
211 retval = kvprintf(fmt, putchar, &pca, 10, ap);
218 * tprintf and vtprintf print on the controlling terminal associated with the
219 * given session, possibly to the log as well.
222 tprintf(struct proc *p, int pri, const char *fmt, ...)
227 vtprintf(p, pri, fmt, ap);
232 vtprintf(struct proc *p, int pri, const char *fmt, va_list ap)
234 struct tty *tp = NULL;
236 struct putchar_arg pca;
237 struct session *sess = NULL;
239 sx_slock(&proctree_lock);
244 if (p->p_flag & P_CONTROLT && p->p_session->s_ttyvp) {
249 if (tp != NULL && tty_checkoutq(tp))
262 sx_sunlock(&proctree_lock);
263 kvprintf(fmt, putchar, &pca, 10, ap);
272 _vprintf(int level, int flags, const char *fmt, va_list ap)
274 struct putchar_arg pca;
276 #ifdef PRINTF_BUFR_SIZE
277 char bufr[PRINTF_BUFR_SIZE];
284 #ifdef PRINTF_BUFR_SIZE
286 pca.p_next = pca.p_bufr;
287 pca.n_bufr = sizeof(bufr);
288 pca.remain = sizeof(bufr);
291 /* Don't buffer console output. */
295 retval = kvprintf(fmt, putchar, &pca, 10, ap);
297 #ifdef PRINTF_BUFR_SIZE
298 /* Write any buffered console/log output: */
299 if (*pca.p_bufr != '\0')
300 prf_putbuf(pca.p_bufr, flags, level);
308 * Log writes to the log buffer, and guarantees not to sleep (so can be
309 * called by interrupt routines). If there is no process reading the
310 * log yet, it writes to the console also.
313 log(int level, const char *fmt, ...)
318 vlog(level, fmt, ap);
323 vlog(int level, const char *fmt, va_list ap)
326 (void)_vprintf(level, log_open ? TOLOG : TOCONS | TOLOG, fmt, ap);
330 #define CONSCHUNK 128
333 log_console(struct uio *uio)
339 if (!log_console_output)
342 pri = LOG_INFO | LOG_CONSOLE;
344 consbuffer = malloc(CONSCHUNK, M_TEMP, M_WAITOK);
347 while (uio->uio_resid > 0) {
348 c = imin(uio->uio_resid, CONSCHUNK - 1);
349 error = uiomove(consbuffer, c, uio);
352 /* Make sure we're NUL-terminated */
353 consbuffer[c] = '\0';
354 if (consbuffer[c - 1] == '\n')
358 msglogstr(consbuffer, pri, /*filter_cr*/ 1);
361 * The previous behavior in log_console() is preserved when
362 * log_console_add_linefeed is non-zero. For that behavior, if an
363 * individual console write came in that was not terminated with a
364 * line feed, it would add a line feed.
366 * This results in different data in the message buffer than
367 * appears on the system console (which doesn't add extra line feed
370 * A number of programs and rc scripts write a line feed, or a period
371 * and a line feed when they have completed their operation. On
372 * the console, this looks seamless, but when displayed with
373 * 'dmesg -a', you wind up with output that looks like this:
378 * On the console, it looks like this:
381 * We could add logic to detect that situation, or just not insert
382 * the extra newlines. Set the kern.log_console_add_linefeed
383 * sysctl/tunable variable to get the old behavior.
385 if (!nl && log_console_add_linefeed) {
386 consbuffer[0] = '\n';
387 consbuffer[1] = '\0';
388 msglogstr(consbuffer, pri, /*filter_cr*/ 1);
392 free(consbuffer, M_TEMP);
396 printf(const char *fmt, ...)
402 retval = vprintf(fmt, ap);
409 vprintf(const char *fmt, va_list ap)
413 retval = _vprintf(-1, TOCONS | TOLOG, fmt, ap);
415 if (!KERNEL_PANICKED())
422 prf_putchar(int c, int flags, int pri)
428 if (flags & TOCONS) {
429 if ((!KERNEL_PANICKED()) && (constty != NULL))
430 msgbuf_addchar(&consmsgbuf, c);
432 if ((constty == NULL) || always_console_output)
438 prf_putbuf(char *bufr, int flags, int pri)
442 msglogstr(bufr, pri, /*filter_cr*/1);
444 if (flags & TOCONS) {
445 if ((!KERNEL_PANICKED()) && (constty != NULL))
446 msgbuf_addstr(&consmsgbuf, -1,
447 bufr, /*filter_cr*/ 0);
449 if ((constty == NULL) || always_console_output)
455 putbuf(int c, struct putchar_arg *ap)
457 /* Check if no console output buffer was provided. */
458 if (ap->p_bufr == NULL) {
459 prf_putchar(c, ap->flags, ap->pri);
461 /* Buffer the character: */
465 /* Always leave the buffer zero terminated. */
468 /* Check if the buffer needs to be flushed. */
469 if (ap->remain == 2 || c == '\n') {
470 prf_putbuf(ap->p_bufr, ap->flags, ap->pri);
472 ap->p_next = ap->p_bufr;
473 ap->remain = ap->n_bufr;
478 * Since we fill the buffer up one character at a time,
479 * this should not happen. We should always catch it when
480 * ap->remain == 2 (if not sooner due to a newline), flush
481 * the buffer and move on. One way this could happen is
482 * if someone sets PRINTF_BUFR_SIZE to 1 or something
485 KASSERT(ap->remain > 2, ("Bad buffer logic, remain = %zd",
491 * Print a character on console or users terminal. If destination is
492 * the console then the last bunch of characters are saved in msgbuf for
496 putchar(int c, void *arg)
498 struct putchar_arg *ap = (struct putchar_arg*) arg;
499 struct tty *tp = ap->tty;
500 int flags = ap->flags;
502 /* Don't use the tty code after a panic or while in ddb. */
509 if ((flags & TOTTY) && tp != NULL && !KERNEL_PANICKED())
512 if ((flags & (TOCONS | TOLOG)) && c != '\0')
517 * Scaled down version of sprintf(3).
520 sprintf(char *buf, const char *cfmt, ...)
526 retval = kvprintf(cfmt, NULL, (void *)buf, 10, ap);
533 * Scaled down version of vsprintf(3).
536 vsprintf(char *buf, const char *cfmt, va_list ap)
540 retval = kvprintf(cfmt, NULL, (void *)buf, 10, ap);
546 * Scaled down version of snprintf(3).
549 snprintf(char *str, size_t size, const char *format, ...)
554 va_start(ap, format);
555 retval = vsnprintf(str, size, format, ap);
561 * Scaled down version of vsnprintf(3).
564 vsnprintf(char *str, size_t size, const char *format, va_list ap)
566 struct snprintf_arg info;
571 retval = kvprintf(format, snprintf_func, &info, 10, ap);
572 if (info.remain >= 1)
578 * Kernel version which takes radix argument vsnprintf(3).
581 vsnrprintf(char *str, size_t size, int radix, const char *format, va_list ap)
583 struct snprintf_arg info;
588 retval = kvprintf(format, snprintf_func, &info, radix, ap);
589 if (info.remain >= 1)
595 snprintf_func(int ch, void *arg)
597 struct snprintf_arg *const info = arg;
599 if (info->remain >= 2) {
606 * Put a NUL-terminated ASCII number (base <= 36) in a buffer in reverse
607 * order; return an optional length and a pointer to the last character
608 * written in the buffer (i.e., the first character of the string).
609 * The buffer pointed to by `nbuf' must have length >= MAXNBUF.
612 ksprintn(char *nbuf, uintmax_t num, int base, int *lenp, int upper)
619 c = hex2ascii(num % base);
620 *++p = upper ? toupper(c) : c;
621 } while (num /= base);
628 * Scaled down version of printf(3).
630 * Two additional formats:
632 * The format %b is supported to decode error registers.
635 * printf("reg=%b\n", regval, "<base><arg>*");
637 * where <base> is the output base expressed as a control character, e.g.
638 * \10 gives octal; \20 gives hex. Each arg is a sequence of characters,
639 * the first of which gives the bit number to be inspected (origin 1), and
640 * the next characters (up to a control character, i.e. a character <= 32),
641 * give the name of the register. Thus:
643 * kvprintf("reg=%b\n", 3, "\10\2BITTWO\1BITONE");
645 * would produce output:
647 * reg=3<BITTWO,BITONE>
649 * XXX: %D -- Hexdump, takes pointer and separator string:
650 * ("%6D", ptr, ":") -> XX:XX:XX:XX:XX:XX
651 * ("%*D", len, ptr, " " -> XX XX XX XX ...
654 kvprintf(char const *fmt, void (*func)(int, void*), void *arg, int radix, va_list ap)
656 #define PCHAR(c) {int cc=(c); if (func) (*func)(cc,arg); else *d++ = cc; retval++; }
659 const char *p, *percent, *q;
663 int base, lflag, qflag, tmp, width, ladjust, sharpflag, neg, sign, dot;
664 int cflag, hflag, jflag, tflag, zflag;
665 int bconv, dwidth, upper;
667 int stop = 0, retval = 0;
677 fmt = "(fmt null)\n";
679 if (radix < 2 || radix > 36)
685 while ((ch = (u_char)*fmt++) != '%' || stop) {
691 qflag = 0; lflag = 0; ladjust = 0; sharpflag = 0; neg = 0;
692 sign = 0; dot = 0; bconv = 0; dwidth = 0; upper = 0;
693 cflag = 0; hflag = 0; jflag = 0; tflag = 0; zflag = 0;
694 reswitch: switch (ch = (u_char)*fmt++) {
712 width = va_arg(ap, int);
718 dwidth = va_arg(ap, int);
727 case '1': case '2': case '3': case '4':
728 case '5': case '6': case '7': case '8': case '9':
729 for (n = 0;; ++fmt) {
730 n = n * 10 + ch - '0';
732 if (ch < '0' || ch > '9')
747 if (!ladjust && width > 0)
750 PCHAR(va_arg(ap, int));
751 if (ladjust && width > 0)
756 up = va_arg(ap, u_char *);
757 p = va_arg(ap, char *);
761 PCHAR(hex2ascii(*up >> 4));
762 PCHAR(hex2ascii(*up & 0x0f));
793 * We do not support %n in kernel, but consume the
797 (void)va_arg(ap, intmax_t *);
799 (void)va_arg(ap, quad_t *);
801 (void)va_arg(ap, long *);
803 (void)va_arg(ap, size_t *);
805 (void)va_arg(ap, short *);
807 (void)va_arg(ap, char *);
809 (void)va_arg(ap, int *);
816 sharpflag = (width == 0);
818 num = (uintptr_t)va_arg(ap, void *);
829 p = va_arg(ap, char *);
835 for (n = 0; n < dwidth && p[n]; n++)
840 if (!ladjust && width > 0)
845 if (ladjust && width > 0)
871 num = va_arg(ap, uintmax_t);
873 num = va_arg(ap, u_quad_t);
875 num = va_arg(ap, ptrdiff_t);
877 num = va_arg(ap, u_long);
879 num = va_arg(ap, size_t);
881 num = (u_short)va_arg(ap, int);
883 num = (u_char)va_arg(ap, int);
885 num = va_arg(ap, u_int);
887 q = va_arg(ap, char *);
893 num = va_arg(ap, intmax_t);
895 num = va_arg(ap, quad_t);
897 num = va_arg(ap, ptrdiff_t);
899 num = va_arg(ap, long);
901 num = va_arg(ap, ssize_t);
903 num = (short)va_arg(ap, int);
905 num = (char)va_arg(ap, int);
907 num = va_arg(ap, int);
909 if (sign && (intmax_t)num < 0) {
911 num = -(intmax_t)num;
913 p = ksprintn(nbuf, num, base, &n, upper);
915 if (sharpflag && num != 0) {
924 if (!ladjust && padc == '0')
925 dwidth = width - tmp;
926 width -= tmp + imax(dwidth, n);
933 if (sharpflag && num != 0) {
936 } else if (base == 16) {
947 if (bconv && num != 0) {
948 /* %b conversion flag format. */
952 if (num & (1 << (n - 1))) {
953 PCHAR(retval != tmp ?
955 for (; (n = *q) > ' '; ++q)
958 for (; *q > ' '; ++q)
963 width -= retval - tmp;
973 while (percent < fmt)
976 * Since we ignore a formatting argument it is no
977 * longer safe to obey the remaining formatting
978 * arguments as the arguments will no longer match
989 * Put character in log buffer with a particular priority.
992 msglogchar(int c, int pri)
994 static int lastpri = -1;
1001 if (c == '\0' || c == '\r')
1003 if (pri != -1 && pri != lastpri) {
1005 msgbuf_addchar(msgbufp, '\n');
1008 msgbuf_addchar(msgbufp, '<');
1009 for (p = ksprintn(nbuf, (uintmax_t)pri, 10, NULL, 0); *p;)
1010 msgbuf_addchar(msgbufp, *p--);
1011 msgbuf_addchar(msgbufp, '>');
1014 msgbuf_addchar(msgbufp, c);
1024 msglogstr(char *str, int pri, int filter_cr)
1029 msgbuf_addstr(msgbufp, pri, str, filter_cr);
1033 msgbufinit(void *ptr, int size)
1036 static struct msgbuf *oldp = NULL;
1037 bool print_boot_tag;
1040 size -= sizeof(*msgbufp);
1042 print_boot_tag = !msgbufmapped;
1043 /* Attempt to fetch kern.boot_tag tunable on first mapping */
1045 TUNABLE_STR_FETCH("kern.boot_tag", current_boot_tag,
1046 sizeof(current_boot_tag));
1047 msgbufp = (struct msgbuf *)(cp + size);
1048 msgbuf_reinit(msgbufp, cp, size);
1049 if (msgbufmapped && oldp != msgbufp)
1050 msgbuf_copy(oldp, msgbufp);
1051 msgbufmapped = true;
1052 if (print_boot_tag && *current_boot_tag != '\0')
1053 printf("%s\n", current_boot_tag);
1058 /* Sysctls for accessing/clearing the msgbuf */
1060 sysctl_kern_msgbuf(SYSCTL_HANDLER_ARGS)
1067 error = priv_check(req->td, PRIV_MSGBUF);
1071 /* Read the whole buffer, one chunk at a time. */
1072 mtx_lock(&msgbuf_lock);
1073 msgbuf_peekbytes(msgbufp, NULL, 0, &seq);
1076 len = msgbuf_peekbytes(msgbufp, buf, sizeof(buf), &seq);
1077 mtx_unlock(&msgbuf_lock);
1079 return (SYSCTL_OUT(req, "", 1)); /* add nulterm */
1081 /* Skip the first line, as it is probably incomplete. */
1082 bp = memchr(buf, '\n', len);
1084 mtx_lock(&msgbuf_lock);
1091 mtx_lock(&msgbuf_lock);
1096 error = sysctl_handle_opaque(oidp, bp, len, req);
1100 mtx_lock(&msgbuf_lock);
1104 SYSCTL_PROC(_kern, OID_AUTO, msgbuf,
1105 CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
1106 NULL, 0, sysctl_kern_msgbuf, "A", "Contents of kernel message buffer");
1108 static int msgbuf_clearflag;
1111 sysctl_kern_msgbuf_clear(SYSCTL_HANDLER_ARGS)
1114 error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
1115 if (!error && req->newptr) {
1116 mtx_lock(&msgbuf_lock);
1117 msgbuf_clear(msgbufp);
1118 mtx_unlock(&msgbuf_lock);
1119 msgbuf_clearflag = 0;
1124 SYSCTL_PROC(_kern, OID_AUTO, msgbuf_clear,
1125 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_SECURE | CTLFLAG_MPSAFE,
1126 &msgbuf_clearflag, 0, sysctl_kern_msgbuf_clear, "I",
1127 "Clear kernel message buffer");
1131 DB_SHOW_COMMAND_FLAGS(msgbuf, db_show_msgbuf, DB_CMD_MEMSAFE)
1135 if (!msgbufmapped) {
1136 db_printf("msgbuf not mapped yet\n");
1139 db_printf("msgbufp = %p\n", msgbufp);
1140 db_printf("magic = %x, size = %d, r= %u, w = %u, ptr = %p, cksum= %u\n",
1141 msgbufp->msg_magic, msgbufp->msg_size, msgbufp->msg_rseq,
1142 msgbufp->msg_wseq, msgbufp->msg_ptr, msgbufp->msg_cksum);
1143 for (i = 0; i < msgbufp->msg_size && !db_pager_quit; i++) {
1144 j = MSGBUF_SEQ_TO_POS(msgbufp, i + msgbufp->msg_rseq);
1145 db_printf("%c", msgbufp->msg_ptr[j]);
1153 hexdump(const void *ptr, int length, const char *hdr, int flags)
1157 const unsigned char *cp;
1160 if ((flags & HD_DELIM_MASK) != 0)
1161 delim = (flags & HD_DELIM_MASK) >> 8;
1165 if ((flags & HD_COLUMN_MASK) != 0)
1166 cols = flags & HD_COLUMN_MASK;
1171 for (i = 0; i < length; i+= cols) {
1175 if ((flags & HD_OMIT_COUNT) == 0)
1178 if ((flags & HD_OMIT_HEX) == 0) {
1179 for (j = 0; j < cols; j++) {
1182 printf("%c%02x", delim, cp[k]);
1188 if ((flags & HD_OMIT_CHARS) == 0) {
1190 for (j = 0; j < cols; j++) {
1194 else if (cp[k] >= ' ' && cp[k] <= '~')
1195 printf("%c", cp[k]);
1204 #endif /* _KERNEL */
1207 sbuf_hexdump(struct sbuf *sb, const void *ptr, int length, const char *hdr,
1212 const unsigned char *cp;
1215 if ((flags & HD_DELIM_MASK) != 0)
1216 delim = (flags & HD_DELIM_MASK) >> 8;
1220 if ((flags & HD_COLUMN_MASK) != 0)
1221 cols = flags & HD_COLUMN_MASK;
1226 for (i = 0; i < length; i+= cols) {
1228 sbuf_printf(sb, "%s", hdr);
1230 if ((flags & HD_OMIT_COUNT) == 0)
1231 sbuf_printf(sb, "%04x ", i);
1233 if ((flags & HD_OMIT_HEX) == 0) {
1234 for (j = 0; j < cols; j++) {
1237 sbuf_printf(sb, "%c%02x", delim, cp[k]);
1239 sbuf_printf(sb, " ");
1243 if ((flags & HD_OMIT_CHARS) == 0) {
1244 sbuf_printf(sb, " |");
1245 for (j = 0; j < cols; j++) {
1248 sbuf_printf(sb, " ");
1249 else if (cp[k] >= ' ' && cp[k] <= '~')
1250 sbuf_printf(sb, "%c", cp[k]);
1252 sbuf_printf(sb, ".");
1254 sbuf_printf(sb, "|");
1256 sbuf_printf(sb, "\n");
1262 counted_warning(unsigned *counter, const char *msg)
1271 if (atomic_cmpset_int(counter, c, c - 1)) {
1273 log(LOG_INFO, "pid %d (%s) %s%s\n",
1274 td->td_proc->p_pid, td->td_name, msg,
1275 c > 1 ? "" : " - not logging anymore");
1284 sbuf_putbuf(struct sbuf *sb)
1287 prf_putbuf(sbuf_data(sb), TOLOG | TOCONS, -1);
1291 sbuf_putbuf(struct sbuf *sb)
1294 printf("%s", sbuf_data(sb));
1299 sbuf_printf_drain(void *arg, const char *data, int len)
1308 * This is allowed as an extra byte is always resvered for
1309 * terminating NUL byte. Save and restore the byte because
1310 * we might be flushing a record, and there may be valid
1311 * data after the buffer.
1314 dataptr = __DECONST(char *, data);
1315 dataptr[len] = '\0';
1317 prf_putbuf(dataptr, TOLOG | TOCONS, -1);
1320 dataptr[len] = oldchr;
1322 #else /* !_KERNEL */
1324 r = printf("%.*s", len, data);
1331 if (retvalptr != NULL)