minix/servers/is/dmp.c

/* This file contains information dump procedures. During the initialization 
 * of the Information Service 'known' function keys are registered at the TTY
 * server in order to receive a notification if one is pressed. Here, the 
 * corresponding dump procedure is called.  
 *
 * The entry points into this file are
 *   handle_fkey:	handle a function key pressed notification
 */

#include "is.h"

#define NHOOKS 15

struct hook_entry {
	int key;
	void (*function)(void);
	char *name;
} hooks[NHOOKS] = {
	{ F1, 	proctab_dmp, "Kernel process table" },
	{ F2,   memmap_dmp, "Process memory maps" },
	{ F3,	image_dmp, "System image" },
	{ F4,	privileges_dmp, "Process privileges" },
	{ F5,	monparams_dmp, "Boot monitor parameters" },
	{ F6,	irqtab_dmp, "IRQ hooks and policies" },
	{ F7,	kmessages_dmp, "Kernel messages" },
	{ F10,	kenv_dmp, "Kernel parameters" },
	{ F11,	timing_dmp, "Timing details (if enabled)" },
	{ F12,	sched_dmp, "Scheduling queues" },
	{ SF1,	mproc_dmp, "Process manager process table" },
	{ SF2,	sigaction_dmp, "Signals" },
	{ SF3,	fproc_dmp, "Filesystem process table" },
	{ SF4,	dtab_dmp, "Device/Driver mapping" },
	{ SF5,	mapping_dmp, "Print key mappings" },
};

/*===========================================================================*
 *				handle_fkey				     *
 *===========================================================================*/
#define pressed(k) ((F1<=(k) && (k)<=F12 && bit_isset(m->FKEY_FKEYS, ((k)-F1+1))) \
  	|| (SF1<=(k) && (k)<=SF12 && bit_isset(m->FKEY_SFKEYS, ((k)-SF1+1)))) 

PUBLIC int do_fkey_pressed(message *m)
{
  int s, h;

  /* The notification message does not convey any information, other
   * than that some function keys have been pressed. Ask TTY for details.
   */
  m->m_type = FKEY_CONTROL;
  m->FKEY_REQUEST = FKEY_EVENTS;
  if (OK != (s=sendrec(TTY_PROC_NR, m)))
      report("IS", "warning, sendrec to TTY failed", s);

  /* Now check which keys were pressed: F1-F12. */
  for(h = 0; h < NHOOKS; h++)
	if(pressed(hooks[h].key))
		hooks[h].function();

  /* Inhibit sending a reply message. */
  return(EDONTREPLY);
}

PRIVATE char *keyname(int key)
{
	static char name[15];

	if(key >= F1 && key <= F12)
		sprintf(name, " F%d", key - F1 + 1);
	else if(key >= SF1 && key <= SF12)
		sprintf(name, "Shift+F%d", key - SF1 + 1);
	else
		sprintf(name, "?");

	return name;
}

PUBLIC void mapping_dmp(void)
{
	int h;

	printf(
"Function key mappings for debug dumps in IS server.\n"
"        Key   Description\n"
"-------------------------------------------------------------------------\n");
	for(h = 0; h < NHOOKS; h++)
		printf(" %10s.  %s\n", keyname(hooks[h].key), hooks[h].name);

	printf("\n");

	return;
}