servers/is/dmp.c

   1 /* This file contains information dump procedures. During the initialization
   2  * of the Information Service 'known' function keys are registered at the TTY
   3  * server in order to receive a notification if one is pressed. Here, the
   4  * corresponding dump procedure is called.
   5  *
   6  * The entry points into this file are
   7  *   map_unmap_fkeys:   register or unregister function key maps with TTY
   8  *   do_fkey_pressed:   handle a function key pressed notification
   9  */
  10
  11 #include "inc.h"
  12 #include <minix/vm.h>
  13
  14 struct hook_entry {
  15         int key;
  16         void (*function)(void);
  17         char *name;
  18 } hooks[] = {
  19         { F1,   proctab_dmp, "Kernel process table" },
  20         { F3,   image_dmp, "System image" },
  21         { F4,   privileges_dmp, "Process privileges" },
  22         { F5,   monparams_dmp, "Boot monitor parameters" },
  23         { F6,   irqtab_dmp, "IRQ hooks and policies" },
  24         { F7,   kmessages_dmp, "Kernel messages" },
  25         { F8,   vm_dmp, "VM status and process maps" },
  26         { F10,  kenv_dmp, "Kernel parameters" },
  27         { SF1,  mproc_dmp, "Process manager process table" },
  28         { SF2,  sigaction_dmp, "Signals" },
  29         { SF3,  fproc_dmp, "Filesystem process table" },
  30         { SF4,  dtab_dmp, "Device/Driver mapping" },
  31         { SF5,  mapping_dmp, "Print key mappings" },
  32         { SF6,  rproc_dmp, "Reincarnation server process table" },
  33         { SF8,  data_store_dmp, "Data store contents" },
  34         { SF9,  procstack_dmp, "Processes with stack traces" },
  35 };
  36
  37 /* Define hooks for the debugging dumps. This table maps function keys
  38  * onto a specific dump and provides a description for it.
  39  */
  40 #define NHOOKS (sizeof(hooks)/sizeof(hooks[0]))
  41
  42 /*===========================================================================*
  43  *                              map_unmap_keys                               *
  44  *===========================================================================*/
  45 void map_unmap_fkeys(map)
  46 int map;
  47 {
  48   int fkeys, sfkeys;
  49   int h, s;
  50
  51   fkeys = sfkeys = 0;
  52
  53   for (h = 0; h < NHOOKS; h++) {
  54       if (hooks[h].key >= F1 && hooks[h].key <= F12)
  55           bit_set(fkeys, hooks[h].key - F1 + 1);
  56       else if (hooks[h].key >= SF1 && hooks[h].key <= SF12)
  57           bit_set(sfkeys, hooks[h].key - SF1 + 1);
  58   }
  59
  60   if (map) s = fkey_map(&fkeys, &sfkeys);
  61   else s = fkey_unmap(&fkeys, &sfkeys);
  62
  63   if (s != OK)
  64         printf("IS: warning, fkey_ctl failed: %d\n", s);
  65 }
  66
  67 /*===========================================================================*
  68  *                              handle_fkey                                  *
  69  *===========================================================================*/
  70 #define pressed(k) ((F1<=(k)&&(k)<=F12 && bit_isset(m->FKEY_FKEYS,((k)-F1+1)))\
  71         || (SF1<=(k) && (k)<=SF12 && bit_isset(m->FKEY_SFKEYS, ((k)-SF1+1))))
  72 int do_fkey_pressed(m)
  73 message *m;                                     /* notification message */
  74 {
  75   int s, h;
  76
  77   /* The notification message does not convey any information, other
  78    * than that some function keys have been pressed. Ask TTY for details.
  79    */
  80   m->m_type = FKEY_CONTROL;
  81   m->FKEY_REQUEST = FKEY_EVENTS;
  82   if (OK != (s=sendrec(TTY_PROC_NR, m)))
  83       printf("IS: warning, sendrec to TTY failed: %d\n", s);
  84
  85   /* Now check which keys were pressed: F1-F12, SF1-SF12. */
  86   for(h=0; h < NHOOKS; h++)
  87       if(pressed(hooks[h].key))
  88           hooks[h].function();
  89
  90   /* Don't send a reply message. */
  91   return(EDONTREPLY);
  92 }
  93
  94 /*===========================================================================*
  95  *                              key_name                                     *
  96  *===========================================================================*/
  97 static char *key_name(int key)
  98 {
  99         static char name[15];
 100
 101         if(key >= F1 && key <= F12)
 102                 snprintf(name, sizeof(name), " F%d", key - F1 + 1);
 103         else if(key >= SF1 && key <= SF12)
 104                 snprintf(name, sizeof(name), "Shift+F%d", key - SF1 + 1);
 105         else
 106                 strlcpy(name, "?", sizeof(name));
 107         return name;
 108 }
 109
 110
 111 /*===========================================================================*
 112  *                              mapping_dmp                                  *
 113  *===========================================================================*/
 114 void mapping_dmp(void)
 115 {
 116   int h;
 117
 118   printf("Function key mappings for debug dumps in IS server.\n");
 119   printf("        Key   Description\n");
 120   printf("-------------------------------------");
 121   printf("------------------------------------\n");
 122
 123   for(h=0; h < NHOOKS; h++)
 124       printf(" %10s.  %s\n", key_name(hooks[h].key), hooks[h].name);
 125   printf("\n");
 126 }