71 lines
2 KiB
C
Executable file
71 lines
2 KiB
C
Executable file
/* This file contains a collection of miscellaneous procedures:
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* panic: abort MINIX due to a fatal error
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* kprintf: (from lib/sysutil/kprintf.c)
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* kputc: buffered putc used by kernel kprintf
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*/
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#include "kernel.h"
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#include "proc.h"
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#include <unistd.h>
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#include <signal.h>
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/*===========================================================================*
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* panic *
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*===========================================================================*/
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PUBLIC void panic(mess,nr)
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_CONST char *mess;
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int nr;
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{
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/* The system has run aground of a fatal kernel error. Terminate execution. */
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static int panicking = 0;
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if (panicking ++) return; /* prevent recursive panics */
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if (mess != NULL) {
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kprintf("\nKernel panic: %s", mess);
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if (nr != NO_NUM) kprintf(" %d", nr);
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kprintf("\n",NO_NUM);
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}
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/* Abort MINIX. */
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prepare_shutdown(RBT_PANIC);
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}
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/* Include system printf() implementation named kprintf() */
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#define printf kprintf
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#include "../lib/sysutil/kprintf.c"
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#define END_OF_KMESS 0
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/*===========================================================================*
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* kputc *
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*===========================================================================*/
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PUBLIC void kputc(c)
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int c; /* character to append */
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{
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/* Accumulate a single character for a kernel message. Send a notification
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* to the output driver if an END_OF_KMESS is encountered.
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*/
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if (c != END_OF_KMESS) {
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if (do_serial_debug) {
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if(c == '\n')
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ser_putc('\r');
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ser_putc(c);
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}
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kmess.km_buf[kmess.km_next] = c; /* put normal char in buffer */
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if (kmess.km_size < KMESS_BUF_SIZE)
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kmess.km_size += 1;
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kmess.km_next = (kmess.km_next + 1) % KMESS_BUF_SIZE;
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} else {
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int p, outprocs[] = OUTPUT_PROCS_ARRAY;
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for(p = 0; outprocs[p] != NONE; p++) {
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if(isokprocn(outprocs[p]) && !isemptyn(outprocs[p])) {
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send_sig(outprocs[p], SIGKMESS);
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}
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}
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}
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}
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