622 lines
14 KiB
C
622 lines
14 KiB
C
/*-
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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 8.3 (Berkeley) 1/21/94
|
|
* $Id: subr_prf.c,v 1.9 1994/12/30 12:17:42 bde Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/conf.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/syslog.h>
|
|
#include <sys/malloc.h>
|
|
|
|
/*
|
|
* Note that stdarg.h and the ANSI style va_start macro is used for both
|
|
* ANSI and traditional C compilers.
|
|
*/
|
|
#include <machine/stdarg.h>
|
|
|
|
#ifdef KADB
|
|
#include <machine/kdbparam.h>
|
|
#endif
|
|
|
|
#define TOCONS 0x01
|
|
#define TOTTY 0x02
|
|
#define TOLOG 0x04
|
|
|
|
struct tty *constty; /* pointer to console "window" tty */
|
|
|
|
extern cnputc(); /* standard console putc */
|
|
int (*v_putc)() = cnputc; /* routine to putc on virtual console */
|
|
|
|
void logpri __P((int level));
|
|
static void putchar __P((int ch, int flags, struct tty *tp));
|
|
static char *ksprintn __P((u_long num, int base, int *len));
|
|
void kprintf __P((const char *fmt, int flags, struct tty *tp, va_list ap));
|
|
|
|
int consintr = 1; /* Ok to handle console interrupts? */
|
|
|
|
/*
|
|
* Variable panicstr contains argument to first call to panic; used as flag
|
|
* to indicate that the kernel has already called panic.
|
|
*/
|
|
const char *panicstr;
|
|
|
|
/*
|
|
* Panic is called on unresolvable fatal errors. It prints "panic: mesg",
|
|
* and then reboots. If we are called twice, then we avoid trying to sync
|
|
* the disks as this often leads to recursive panics.
|
|
*/
|
|
#ifdef __GNUC__
|
|
__dead /* panic() does not return */
|
|
#endif
|
|
void
|
|
#ifdef __STDC__
|
|
panic(const char *fmt, ...)
|
|
#else
|
|
panic(fmt, va_alist)
|
|
char *fmt;
|
|
#endif
|
|
{
|
|
int bootopt;
|
|
va_list ap;
|
|
|
|
bootopt = RB_AUTOBOOT | RB_DUMP;
|
|
if (panicstr)
|
|
bootopt |= RB_NOSYNC;
|
|
else
|
|
panicstr = fmt;
|
|
|
|
va_start(ap, fmt);
|
|
printf("panic: %r\n", fmt, ap);
|
|
va_end(ap);
|
|
|
|
#ifdef KGDB
|
|
kgdb_panic();
|
|
#endif
|
|
#ifdef KADB
|
|
if (boothowto & RB_KDB)
|
|
kdbpanic();
|
|
#endif
|
|
#ifdef DDB
|
|
Debugger ("panic");
|
|
#endif
|
|
boot(bootopt);
|
|
}
|
|
|
|
/*
|
|
* Warn that a system table is full.
|
|
*/
|
|
void
|
|
tablefull(tab)
|
|
const char *tab;
|
|
{
|
|
|
|
log(LOG_ERR, "%s: table is full\n", tab);
|
|
}
|
|
|
|
/*
|
|
* Uprintf prints to the controlling terminal for the current process.
|
|
* It may block if the tty queue is overfull. No message is printed if
|
|
* the queue does not clear in a reasonable time.
|
|
*/
|
|
void
|
|
#ifdef __STDC__
|
|
uprintf(const char *fmt, ...)
|
|
#else
|
|
uprintf(fmt, va_alist)
|
|
char *fmt;
|
|
#endif
|
|
{
|
|
register struct proc *p = curproc;
|
|
va_list ap;
|
|
|
|
if (p->p_flag & P_CONTROLT && p->p_session->s_ttyvp) {
|
|
va_start(ap, fmt);
|
|
kprintf(fmt, TOTTY, p->p_session->s_ttyp, ap);
|
|
va_end(ap);
|
|
}
|
|
}
|
|
|
|
tpr_t
|
|
tprintf_open(p)
|
|
register struct proc *p;
|
|
{
|
|
|
|
if (p->p_flag & P_CONTROLT && p->p_session->s_ttyvp) {
|
|
SESSHOLD(p->p_session);
|
|
return ((tpr_t) p->p_session);
|
|
}
|
|
return ((tpr_t) NULL);
|
|
}
|
|
|
|
void
|
|
tprintf_close(sess)
|
|
tpr_t sess;
|
|
{
|
|
|
|
if (sess)
|
|
SESSRELE((struct session *) sess);
|
|
}
|
|
|
|
/*
|
|
* tprintf prints on the controlling terminal associated
|
|
* with the given session.
|
|
*/
|
|
void
|
|
#ifdef __STDC__
|
|
tprintf(tpr_t tpr, const char *fmt, ...)
|
|
#else
|
|
tprintf(tpr, fmt, va_alist)
|
|
tpr_t tpr;
|
|
char *fmt;
|
|
#endif
|
|
{
|
|
register struct session *sess = (struct session *)tpr;
|
|
struct tty *tp = NULL;
|
|
int flags = TOLOG;
|
|
va_list ap;
|
|
|
|
logpri(LOG_INFO);
|
|
if (sess && sess->s_ttyvp && ttycheckoutq(sess->s_ttyp, 0)) {
|
|
flags |= TOTTY;
|
|
tp = sess->s_ttyp;
|
|
}
|
|
va_start(ap, fmt);
|
|
kprintf(fmt, flags, tp, ap);
|
|
va_end(ap);
|
|
logwakeup();
|
|
}
|
|
|
|
/*
|
|
* Ttyprintf displays a message on a tty; it should be used only by
|
|
* the tty driver, or anything that knows the underlying tty will not
|
|
* be revoke(2)'d away. Other callers should use tprintf.
|
|
*/
|
|
void
|
|
#ifdef __STDC__
|
|
ttyprintf(struct tty *tp, const char *fmt, ...)
|
|
#else
|
|
ttyprintf(tp, fmt, va_alist)
|
|
struct tty *tp;
|
|
char *fmt;
|
|
#endif
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
kprintf(fmt, TOTTY, tp, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
extern int log_open;
|
|
|
|
/*
|
|
* Log writes to the log buffer, and guarantees not to sleep (so can be
|
|
* called by interrupt routines). If there is no process reading the
|
|
* log yet, it writes to the console also.
|
|
*/
|
|
void
|
|
#ifdef __STDC__
|
|
log(int level, const char *fmt, ...)
|
|
#else
|
|
log(level, fmt, va_alist)
|
|
int level;
|
|
char *fmt;
|
|
#endif
|
|
{
|
|
register int s;
|
|
va_list ap;
|
|
|
|
s = splhigh();
|
|
logpri(level);
|
|
va_start(ap, fmt);
|
|
kprintf(fmt, TOLOG, NULL, ap);
|
|
splx(s);
|
|
va_end(ap);
|
|
if (!log_open) {
|
|
va_start(ap, fmt);
|
|
kprintf(fmt, TOCONS, NULL, ap);
|
|
va_end(ap);
|
|
}
|
|
logwakeup();
|
|
}
|
|
|
|
void
|
|
logpri(level)
|
|
int level;
|
|
{
|
|
register char *p;
|
|
|
|
putchar('<', TOLOG, NULL);
|
|
for (p = ksprintn((u_long)level, 10, NULL); *p;)
|
|
putchar(*p--, TOLOG, NULL);
|
|
putchar('>', TOLOG, NULL);
|
|
}
|
|
|
|
void
|
|
#ifdef __STDC__
|
|
addlog(const char *fmt, ...)
|
|
#else
|
|
addlog(fmt, va_alist)
|
|
char *fmt;
|
|
#endif
|
|
{
|
|
register int s;
|
|
va_list ap;
|
|
|
|
s = splhigh();
|
|
va_start(ap, fmt);
|
|
kprintf(fmt, TOLOG, NULL, ap);
|
|
splx(s);
|
|
va_end(ap);
|
|
if (!log_open) {
|
|
va_start(ap, fmt);
|
|
kprintf(fmt, TOCONS, NULL, ap);
|
|
va_end(ap);
|
|
}
|
|
logwakeup();
|
|
}
|
|
|
|
void
|
|
#ifdef __STDC__
|
|
printf(const char *fmt, ...)
|
|
#else
|
|
printf(fmt, va_alist)
|
|
char *fmt;
|
|
#endif
|
|
{
|
|
va_list ap;
|
|
register int savintr;
|
|
|
|
savintr = consintr; /* disable interrupts */
|
|
consintr = 0;
|
|
va_start(ap, fmt);
|
|
kprintf(fmt, TOCONS | TOLOG, NULL, ap);
|
|
va_end(ap);
|
|
if (!panicstr)
|
|
logwakeup();
|
|
consintr = savintr; /* reenable interrupts */
|
|
}
|
|
|
|
/*
|
|
* Scaled down version of printf(3).
|
|
*
|
|
* Two additional formats:
|
|
*
|
|
* The format %b is supported to decode error registers.
|
|
* Its usage is:
|
|
*
|
|
* printf("reg=%b\n", regval, "<base><arg>*");
|
|
*
|
|
* where <base> is the output base expressed as a control character, e.g.
|
|
* \10 gives octal; \20 gives hex. Each arg is a sequence of characters,
|
|
* the first of which gives the bit number to be inspected (origin 1), and
|
|
* the next characters (up to a control character, i.e. a character <= 32),
|
|
* give the name of the register. Thus:
|
|
*
|
|
* kprintf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n");
|
|
*
|
|
* would produce output:
|
|
*
|
|
* reg=3<BITTWO,BITONE>
|
|
*
|
|
* The format %r passes an additional format string and argument list
|
|
* recursively. Its usage is:
|
|
*
|
|
* fn(char *fmt, ...)
|
|
* {
|
|
* va_list ap;
|
|
* va_start(ap, fmt);
|
|
* printf("prefix: %r: suffix\n", fmt, ap);
|
|
* va_end(ap);
|
|
* }
|
|
*
|
|
* Space or zero padding and a field width are supported for the numeric
|
|
* formats only.
|
|
*/
|
|
void
|
|
kprintf(fmt, flags, tp, ap)
|
|
register const char *fmt;
|
|
int flags;
|
|
struct tty *tp;
|
|
va_list ap;
|
|
{
|
|
register char *p, *q;
|
|
register int ch, n;
|
|
u_long ul;
|
|
int base, lflag, tmp, width;
|
|
char padc;
|
|
|
|
if (fmt == NULL)
|
|
fmt = "(fmt null)\n";
|
|
for (;;) {
|
|
padc = ' ';
|
|
width = 0;
|
|
while ((ch = *(u_char *)fmt++) != '%') {
|
|
if (ch == '\0')
|
|
return;
|
|
putchar(ch, flags, tp);
|
|
}
|
|
lflag = 0;
|
|
reswitch: switch (ch = *(u_char *)fmt++) {
|
|
case '0':
|
|
padc = '0';
|
|
goto reswitch;
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
for (width = 0;; ++fmt) {
|
|
width = width * 10 + ch - '0';
|
|
ch = *fmt;
|
|
if (ch < '0' || ch > '9')
|
|
break;
|
|
}
|
|
goto reswitch;
|
|
case 'l':
|
|
lflag = 1;
|
|
goto reswitch;
|
|
case 'b':
|
|
ul = va_arg(ap, int);
|
|
p = va_arg(ap, char *);
|
|
for (q = ksprintn(ul, *p++, NULL); *q;)
|
|
putchar(*q--, flags, tp);
|
|
|
|
if (!ul)
|
|
break;
|
|
|
|
for (tmp = 0; *p;) {
|
|
n = *p++;
|
|
if (ul & (1 << (n - 1))) {
|
|
putchar(tmp ? ',' : '<', flags, tp);
|
|
for (; (n = *p) > ' '; ++p)
|
|
putchar(n, flags, tp);
|
|
tmp = 1;
|
|
} else
|
|
for (; *p > ' '; ++p)
|
|
continue;
|
|
}
|
|
if (tmp)
|
|
putchar('>', flags, tp);
|
|
break;
|
|
case 'c':
|
|
putchar(va_arg(ap, int), flags, tp);
|
|
break;
|
|
case 'r':
|
|
p = va_arg(ap, char *);
|
|
kprintf(p, flags, tp, va_arg(ap, va_list));
|
|
break;
|
|
case 's':
|
|
p = va_arg(ap, char *);
|
|
if (p == NULL)
|
|
p = "(null)";
|
|
while (*p)
|
|
putchar(*p++, flags, tp);
|
|
break;
|
|
case 'd':
|
|
ul = lflag ? va_arg(ap, long) : va_arg(ap, int);
|
|
if ((long)ul < 0) {
|
|
putchar('-', flags, tp);
|
|
ul = -(long)ul;
|
|
}
|
|
base = 10;
|
|
goto number;
|
|
case 'o':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 8;
|
|
goto number;
|
|
case 'u':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 10;
|
|
goto number;
|
|
case 'p':
|
|
ul = (u_long) va_arg(ap, void *);
|
|
width=8;
|
|
base=16;
|
|
putchar('0',flags,tp);
|
|
putchar('x',flags,tp);
|
|
goto number;
|
|
case 'x':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 16;
|
|
number: p = ksprintn(ul, base, &tmp);
|
|
if (width && (width -= tmp) > 0)
|
|
while (width--)
|
|
putchar(padc, flags, tp);
|
|
while (*p)
|
|
putchar(*p--, flags, tp);
|
|
break;
|
|
default:
|
|
putchar('%', flags, tp);
|
|
if (lflag)
|
|
putchar('l', flags, tp);
|
|
/* FALLTHROUGH */
|
|
case '%':
|
|
putchar(ch, flags, tp);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Print a character on console or users terminal. If destination is
|
|
* the console then the last MSGBUFS characters are saved in msgbuf for
|
|
* inspection later.
|
|
*/
|
|
static void
|
|
putchar(c, flags, tp)
|
|
register int c;
|
|
int flags;
|
|
struct tty *tp;
|
|
{
|
|
extern int msgbufmapped;
|
|
register struct msgbuf *mbp;
|
|
|
|
if (panicstr)
|
|
constty = NULL;
|
|
if ((flags & TOCONS) && tp == NULL && constty) {
|
|
tp = constty;
|
|
flags |= TOTTY;
|
|
}
|
|
if ((flags & TOTTY) && tp && tputchar(c, tp) < 0 &&
|
|
(flags & TOCONS) && tp == constty)
|
|
constty = NULL;
|
|
if ((flags & TOLOG) &&
|
|
c != '\0' && c != '\r' && c != 0177 && msgbufmapped) {
|
|
mbp = msgbufp;
|
|
if (mbp->msg_magic != MSG_MAGIC) {
|
|
bzero((caddr_t)mbp, sizeof(*mbp));
|
|
mbp->msg_magic = MSG_MAGIC;
|
|
}
|
|
mbp->msg_bufc[mbp->msg_bufx++] = c;
|
|
if (mbp->msg_bufx >= MSG_BSIZE)
|
|
mbp->msg_bufx = 0;
|
|
if (mbp->msg_bufr == mbp->msg_bufx) {
|
|
mbp->msg_bufr++;
|
|
if (mbp->msg_bufr >= MSG_BSIZE)
|
|
mbp->msg_bufr = 0;
|
|
}
|
|
}
|
|
if ((flags & TOCONS) && constty == NULL && c != '\0')
|
|
(*v_putc)(c);
|
|
}
|
|
|
|
/*
|
|
* Scaled down version of sprintf(3).
|
|
*/
|
|
#ifdef __STDC__
|
|
int
|
|
sprintf(char *buf, const char *cfmt, ...)
|
|
#else
|
|
int
|
|
sprintf(buf, cfmt, va_alist)
|
|
char *buf, *cfmt;
|
|
#endif
|
|
{
|
|
register const char *fmt = cfmt;
|
|
register char *p, *bp;
|
|
register int ch, base;
|
|
u_long ul;
|
|
int lflag;
|
|
va_list ap;
|
|
|
|
va_start(ap, cfmt);
|
|
for (bp = buf; ; ) {
|
|
while ((ch = *(u_char *)fmt++) != '%')
|
|
if ((*bp++ = ch) == '\0')
|
|
return ((bp - buf) - 1);
|
|
|
|
lflag = 0;
|
|
reswitch: switch (ch = *(u_char *)fmt++) {
|
|
case 'l':
|
|
lflag = 1;
|
|
goto reswitch;
|
|
case 'c':
|
|
*bp++ = va_arg(ap, int);
|
|
break;
|
|
case 's':
|
|
p = va_arg(ap, char *);
|
|
while (*p)
|
|
*bp++ = *p++;
|
|
break;
|
|
case 'd':
|
|
ul = lflag ? va_arg(ap, long) : va_arg(ap, int);
|
|
if ((long)ul < 0) {
|
|
*bp++ = '-';
|
|
ul = -(long)ul;
|
|
}
|
|
base = 10;
|
|
goto number;
|
|
break;
|
|
case 'o':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 8;
|
|
goto number;
|
|
break;
|
|
case 'u':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 10;
|
|
goto number;
|
|
break;
|
|
case 'x':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 16;
|
|
number: for (p = ksprintn(ul, base, NULL); *p;)
|
|
*bp++ = *p--;
|
|
break;
|
|
default:
|
|
*bp++ = '%';
|
|
if (lflag)
|
|
*bp++ = 'l';
|
|
/* FALLTHROUGH */
|
|
case '%':
|
|
*bp++ = ch;
|
|
}
|
|
}
|
|
va_end(ap);
|
|
}
|
|
|
|
/*
|
|
* Put a number (base <= 16) in a buffer in reverse order; return an
|
|
* optional length and a pointer to the NULL terminated (preceded?)
|
|
* buffer.
|
|
*/
|
|
static char *
|
|
ksprintn(ul, base, lenp)
|
|
register u_long ul;
|
|
register int base, *lenp;
|
|
{ /* A long in base 8, plus NULL. */
|
|
static char buf[sizeof(long) * NBBY / 3 + 2];
|
|
register char *p;
|
|
|
|
p = buf;
|
|
do {
|
|
*++p = "0123456789abcdef"[ul % base];
|
|
} while (ul /= base);
|
|
if (lenp)
|
|
*lenp = p - buf;
|
|
return (p);
|
|
}
|