lint; do not call logwakeup if paniced

[unix-history] / usr / src / sys / kern / subr_prf.c

diff --git a/usr/src/sys/kern/subr_prf.c b/usr/src/sys/kern/subr_prf.c
index 912aca7..eda5336 100644 (file)
--- a/usr/src/sys/kern/subr_prf.c
+++ b/usr/src/sys/kern/subr_prf.c
@@ -1,9 +1,9 @@
 /*
 /*

- * Copyright (c) 1982 Regents of the University of California.
+ * Copyright (c) 1982, 1986, 1988 Regents of the University of California.

  * All rights reserved.  The Berkeley software License Agreement
  * specifies the terms and conditions for redistribution.
  *
  * All rights reserved.  The Berkeley software License Agreement
  * specifies the terms and conditions for redistribution.
  *

- *     @(#)subr_prf.c  6.9 (Berkeley) %G%
+ *     @(#)subr_prf.c  7.17 (Berkeley) %G%

  */
 
 #include "param.h"
  */
 
 #include "param.h"


@@ -14,15 +14,17 @@
 #include "reboot.h"
 #include "vm.h"
 #include "msgbuf.h"
 #include "reboot.h"
 #include "vm.h"
 #include "msgbuf.h"

-#include "dir.h"

 #include "user.h"
 #include "proc.h"
 #include "ioctl.h"
 #include "user.h"
 #include "proc.h"
 #include "ioctl.h"

+#include "vnode.h"
+#include "file.h"

 #include "tty.h"
 #include "syslog.h"
 
 #include "tty.h"
 #include "syslog.h"
 

-#ifdef vax
-#include "../vax/mtpr.h"
+#include "machine/mtpr.h"
+#ifdef KADB
+#include "machine/kdbparam.h"

 #endif
 
 #define TOCONS 0x1
 #endif
 
 #define TOCONS 0x1


@@ -36,6 +38,23 @@
  */
 char   *panicstr;
 
  */
 char   *panicstr;
 

+extern cnputc();                       /* standard console putc */
+int    (*v_putc)() = cnputc;           /* routine to putc on virtual console */
+extern struct tty cons;                /* standard console tty */
+struct tty *constty;                   /* pointer to console "window" tty */
+
+#ifdef KADB
+extern cngetc();                       /* standard console getc */
+extern cnpoll();
+int    (*v_getc)() = cngetc;           /* "" getc from virtual console */
+int    (*v_poll)() = cnpoll;           /* kdb hook to enable input polling */
+#endif
+
+extern cnputc();                       /* standard console putc */
+extern struct tty cons;                /* standard console tty */
+struct tty *constty;                   /* pointer to console "window" tty */
+int    (*v_console)() = cnputc;        /* routine to putc on virtual console */
+

 /*
  * Scaled down version of C Library printf.
  * Used to print diagnostic information directly on console tty.
 /*
  * Scaled down version of C Library printf.
  * Used to print diagnostic information directly on console tty.


@@ -53,43 +72,81 @@ char        *panicstr;
  *     printf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n");
  * would produce output:
  *     reg=3<BITTWO,BITONE>
  *     printf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n");
  * would produce output:
  *     reg=3<BITTWO,BITONE>

+ *
+ * Another additional format: %r is used to pass an additional format string
+ * and argument list recursively.  Usage is typically:
+ *
+ * fn(otherstuff, fmt [, arg1, ... ] )
+ *     char *fmt;
+ *     u_int arg1, ...;
+ *
+ *     printf("prefix: %r, other stuff\n", fmt, &arg1);

  */
  */

+#if defined(tahoe)
+int    consintr;
+#endif
+

 /*VARARGS1*/
 printf(fmt, x1)
        char *fmt;
        unsigned x1;
 {
 /*VARARGS1*/
 printf(fmt, x1)
        char *fmt;
        unsigned x1;
 {

+#if defined(tahoe)
+       register int savintr;

 
 

-       prf(fmt, &x1, TOCONS | TOLOG, (struct tty *)0);
-       logwakeup();
+       savintr = consintr, consintr = 0;       /* disable interrupts */
+#endif
+       prf(fmt, &x1, TOCONS | TOLOG, (caddr_t)0);
+       if (!panicstr)
+               logwakeup();
+#if defined(tahoe)
+       consintr = savintr;                     /* reenable interrupts */
+#endif

 }
 
 /*
 }
 
 /*

- * Uprintf prints to the current user's terminal
- * and does no watermark checking - (so no verbose messages).
+ * 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.

  */
 /*VARARGS1*/
 uprintf(fmt, x1)
        char *fmt;
        unsigned x1;
 {
  */
 /*VARARGS1*/
 uprintf(fmt, x1)
        char *fmt;
        unsigned x1;
 {

+       register struct tty *tp = u.u_procp->p_session->s_ttyp;

 
 

-       prf(fmt, &x1, TOTTY, u.u_ttyp);
+       if (tp != NULL && tp->t_session == u.u_procp->p_session)
+               prf(fmt, &x1, TOTTY, (caddr_t)tp);

 }
 
 /*
  * tprintf prints on the specified terminal (console if none)
  * and logs the message.  It is designed for error messages from
 }
 
 /*
  * tprintf prints on the specified terminal (console if none)
  * and logs the message.  It is designed for error messages from

- * single-open devices, and may be called from interrupt level.
+ * single-open devices, and may be called from interrupt level
+ * (does not sleep).

  */
 /*VARARGS2*/
  */
 /*VARARGS2*/

-tprintf(ttyp, fmt, x1)
-       struct tty *ttyp;
+tprintf(vp, fmt, x1)
+       register caddr_t vp;

        char *fmt;
        unsigned x1;
 {
        char *fmt;
        unsigned x1;
 {

+#ifdef notyet
+       int flags = TOTTY | TOLOG;
+
+       logpri(LOG_INFO);

 
 

-       prf(fmt, &x1, TOTTY | TOLOG, ttyp);
+       if (vp == NULL || 
+           VOP_IOCTL(vp, TIOCCHECKOUTQ, &val, FWRITE, NOCRED) != 0 || 
+           val == 0)
+               flags = TOLOG;
+       prf(fmt, &x1, flags, vp);
+       logwakeup();
+#else
+       printf("tprintf called\n");
+#endif

 }
 
 /*
 }
 
 /*


@@ -105,20 +162,41 @@ log(level, fmt, x1)
        register s = splhigh();
        extern int log_open;
 
        register s = splhigh();
        extern int log_open;
 

-       putchar('<', TOLOG, (struct tty *)0);
-       printn(level, 10, TOLOG, (struct tty *)0);
-       putchar('>', TOLOG, (struct tty *)0);
-       prf(fmt, &x1, TOLOG, (struct tty *)0);
+       logpri(level);
+       prf(fmt, &x1, TOLOG, (caddr_t)0);
+       splx(s);
+       if (!log_open)
+               prf(fmt, &x1, TOCONS, (caddr_t)0);
+       logwakeup();
+}
+
+logpri(level)
+       int level;
+{
+
+       putchar('<', TOLOG, (caddr_t)0);
+       printn((u_long)level, 10, TOLOG, (caddr_t)0);
+       putchar('>', TOLOG, (caddr_t)0);
+}
+
+/*VARARGS1*/
+addlog(fmt, x1)
+       char *fmt;
+       unsigned x1;
+{
+       register s = splhigh();
+
+       prf(fmt, &x1, TOLOG, (caddr_t)0);

        splx(s);
        if (!log_open)
        splx(s);
        if (!log_open)

-               prf(fmt, &x1, TOCONS, (struct tty *)0);
+               prf(fmt, &x1, TOCONS, (caddr_t)0);

        logwakeup();
 }
 
        logwakeup();
 }
 

-prf(fmt, adx, flags, ttyp)
+prf(fmt, adx, flags, where)

        register char *fmt;
        register u_int *adx;
        register char *fmt;
        register u_int *adx;

-       struct tty *ttyp;
+       caddr_t where;

 {
        register int b, c, i;
        char *s;
 {
        register int b, c, i;
        char *s;


@@ -128,11 +206,11 @@ loop:
        while ((c = *fmt++) != '%') {
                if (c == '\0')
                        return;
        while ((c = *fmt++) != '%') {
                if (c == '\0')
                        return;

-               putchar(c, flags, ttyp);
+               putchar(c, flags, where);

        }
 again:
        c = *fmt++;
        }
 again:
        c = *fmt++;

-       /* THIS CODE IS VAX DEPENDENT IN HANDLING %l? AND %c */
+       /* THIS CODE IS MACHINE DEPENDENT IN HANDLING %l? AND %c */

        switch (c) {
 
        case 'l':
        switch (c) {
 
        case 'l':


@@ -141,49 +219,62 @@ again:
                b = 16;
                goto number;
        case 'd': case 'D':
                b = 16;
                goto number;
        case 'd': case 'D':

-       case 'u':               /* what a joke */
+               b = -10;
+               goto number;
+       case 'u':

                b = 10;
                goto number;
        case 'o': case 'O':
                b = 8;
 number:
                b = 10;
                goto number;
        case 'o': case 'O':
                b = 8;
 number:

-               printn((u_long)*adx, b, flags, ttyp);
+               printn((u_long)*adx, b, flags, where);

                break;
        case 'c':
                b = *adx;
                break;
        case 'c':
                b = *adx;

+#if BYTE_ORDER == LITTLE_ENDIAN

                for (i = 24; i >= 0; i -= 8)
                        if (c = (b >> i) & 0x7f)
                for (i = 24; i >= 0; i -= 8)
                        if (c = (b >> i) & 0x7f)

-                               putchar(c, flags, ttyp);
+                               putchar(c, flags, where);
+#endif
+#if BYTE_ORDER == BIG_ENDIAN
+               if (c = (b & 0x7f))
+                       putchar(c, flags, where);
+#endif

                break;
        case 'b':
                b = *adx++;
                s = (char *)*adx;
                break;
        case 'b':
                b = *adx++;
                s = (char *)*adx;

-               printn((u_long)b, *s++, flags, ttyp);
+               printn((u_long)b, *s++, flags, where);

                any = 0;
                if (b) {
                        while (i = *s++) {
                                if (b & (1 << (i-1))) {
                any = 0;
                if (b) {
                        while (i = *s++) {
                                if (b & (1 << (i-1))) {

-                                       putchar(any? ',' : '<', flags, ttyp);
+                                       putchar(any ? ',' : '<', flags, where);

                                        any = 1;
                                        for (; (c = *s) > 32; s++)
                                        any = 1;
                                        for (; (c = *s) > 32; s++)

-                                               putchar(c, flags, ttyp);
+                                               putchar(c, flags, where);

                                } else
                                        for (; *s > 32; s++)
                                                ;
                        }
                        if (any)
                                } else
                                        for (; *s > 32; s++)
                                                ;
                        }
                        if (any)

-                               putchar('>', flags, ttyp);
+                               putchar('>', flags, where);

                }
                break;
 
        case 's':
                s = (char *)*adx;
                while (c = *s++)
                }
                break;
 
        case 's':
                s = (char *)*adx;
                while (c = *s++)

-                       putchar(c, flags, ttyp);
+                       putchar(c, flags, where);
+               break;
+
+       case 'r':
+               s = (char *)*adx++;
+               prf(s, (u_int *)*adx, flags, where);

                break;
 
        case '%':
                break;
 
        case '%':

-               putchar('%', flags, ttyp);
+               putchar('%', flags, where);

                break;
        }
        adx++;
                break;
        }
        adx++;


@@ -194,16 +285,19 @@ number:
  * Printn prints a number n in base b.
  * We don't use recursion to avoid deep kernel stacks.
  */
  * Printn prints a number n in base b.
  * We don't use recursion to avoid deep kernel stacks.
  */

-printn(n, b, flags, ttyp)
+printn(n, b, flags, where)

        u_long n;
        u_long n;

-       struct tty *ttyp;
+       caddr_t where;

 {
        char prbuf[11];
        register char *cp;
 
 {
        char prbuf[11];
        register char *cp;
 

-       if (b == 10 && (int)n < 0) {
-               putchar('-', flags, ttyp);
-               n = (unsigned)(-(int)n);
+       if (b == -10) {
+               if ((int)n < 0) {
+                       putchar('-', flags, where);
+                       n = (unsigned)(-(int)n);
+               }
+               b = -b;

        }
        cp = prbuf;
        do {
        }
        cp = prbuf;
        do {


@@ -211,7 +305,7 @@ printn(n, b, flags, ttyp)
                n /= b;
        } while (n);
        do
                n /= b;
        } while (n);
        do

-               putchar(*--cp, flags, ttyp);
+               putchar(*--cp, flags, where);

        while (cp > prbuf);
 }
 
        while (cp > prbuf);
 }
 


@@ -224,7 +318,7 @@ printn(n, b, flags, ttyp)
 panic(s)
        char *s;
 {
 panic(s)
        char *s;
 {

-       int bootopt = RB_AUTOBOOT;
+       int bootopt = RB_AUTOBOOT | RB_DUMP;

 
        if (panicstr)
                bootopt |= RB_NOSYNC;
 
        if (panicstr)
                bootopt |= RB_NOSYNC;


@@ -232,7 +326,15 @@ panic(s)
                panicstr = s;
        }
        printf("panic: %s\n", s);
                panicstr = s;
        }
        printf("panic: %s\n", s);

-       boot(RB_PANIC, bootopt);
+#ifdef KADB
+       if (boothowto & RB_KDB) {
+               int x = splnet();       /* below kdb pri */
+
+               setsoftkdb();
+               splx(x);
+       }
+#endif
+       boot(bootopt);

 }
 
 /*
 }
 
 /*


@@ -245,48 +347,33 @@ tablefull(tab)
        log(LOG_ERR, "%s: table is full\n", tab);
 }
 
        log(LOG_ERR, "%s: table is full\n", tab);
 }
 

-/*
- * Hard error is the preface to plaintive error messages
- * about failing disk transfers.
- */
-harderr(bp, cp)
-       struct buf *bp;
-       char *cp;
-{
-
-       printf("%s%d%c: hard error sn%d ", cp,
-           minor(bp->b_dev) >> 3, 'a'+(minor(bp->b_dev)&07), bp->b_blkno);
-}
-

 /*
  * Print a character on console or users terminal.
  * If destination is console then the last MSGBUFS characters
  * are saved in msgbuf for inspection later.
  */
 /*ARGSUSED*/
 /*
  * Print a character on console or users terminal.
  * If destination is console then the last MSGBUFS characters
  * are saved in msgbuf for inspection later.
  */
 /*ARGSUSED*/

-putchar(c, flags, tp)
+putchar(c, flags, where)

        register int c;
        register int c;

-       struct tty *tp;
+       caddr_t where;

 {
 {

-       extern struct tty cons;
-
-       if (flags & TOTTY) {
-               if (tp == (struct tty *)NULL && (flags & TOCONS) == 0)
-                       tp = &cons;
-               if (tp && (tp->t_state & TS_CARR_ON)) {
-                       register s = spl6();
-                       if (c == '\n')
-                               (void) ttyoutput('\r', tp);
-                       (void) ttyoutput(c, tp);
-                       ttstart(tp);
-                       splx(s);
-               }
+       extern int msgbufmapped;
+
+       if (panicstr)
+               constty = 0;
+       if ((flags & TOCONS) && where == 0 && constty) {
+               where = (caddr_t)constty;
+               flags |= TOTTY;

        }
        }

-       if ((flags & TOLOG) && c != '\0' && c != '\r' && c != 0177
-#ifdef vax
-           && mfpr(MAPEN)
-#endif
-           ) {
+       if ((flags & TOCONS) && panicstr == 0 && tp == 0 && constty) {
+               tp = constty;
+               flags |= TOTTY;
+       }
+       if ((flags & TOTTY) && where && tputchar(c, (struct tty *)where) < 0 &&
+           (flags & TOCONS) && (struct tty *)where == constty)
+               constty = 0;
+       if ((flags & TOLOG) && c != '\0' && c != '\r' && c != 0177 &&
+           msgbufmapped) {

                if (msgbuf.msg_magic != MSG_MAGIC) {
                        register int i;
 
                if (msgbuf.msg_magic != MSG_MAGIC) {
                        register int i;
 


@@ -295,10 +382,9 @@ putchar(c, flags, tp)
                        for (i=0; i < MSG_BSIZE; i++)
                                msgbuf.msg_bufc[i] = 0;
                }
                        for (i=0; i < MSG_BSIZE; i++)
                                msgbuf.msg_bufc[i] = 0;
                }

+               msgbuf.msg_bufc[msgbuf.msg_bufx++] = c;

                if (msgbuf.msg_bufx < 0 || msgbuf.msg_bufx >= MSG_BSIZE)
                        msgbuf.msg_bufx = 0;
                if (msgbuf.msg_bufx < 0 || msgbuf.msg_bufx >= MSG_BSIZE)
                        msgbuf.msg_bufx = 0;

-               msgbuf.msg_bufc[msgbuf.msg_bufx++] = c;

        }
        }

-       if ((flags & TOCONS) && c != '\0')
-               cnputc(c);
+               (*v_console)(c);

 }
 }