ec24a0798c
The TTY driver now only notifies the IS server about function key event, but does not tell which keys are pressed. The IS servers queries the TTY driver to find out about this.
137 lines
4.4 KiB
C
137 lines
4.4 KiB
C
/* System Information Service.
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* This service handles the various debugging dumps, such as the process
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* table, so that these no longer directly touch kernel memory. Instead, the
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* system task is asked to copy some table in local memory.
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*
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* Created:
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* Apr 29, 2004 by Jorrit N. Herder
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*/
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#include "is.h"
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/* Set debugging level to 0, 1, or 2 to see no, some, all debug output. */
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#define DEBUG_LEVEL 1
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#define DPRINTF if (DEBUG_LEVEL > 0) printf
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/* Allocate space for the global variables. */
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int is_proc_nr; /* own process number */
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message m_in; /* the input message itself */
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message m_out; /* the output message used for reply */
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int who; /* caller's proc number */
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int callnr; /* system call number */
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/* Diagnostic messages buffer. */
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char diag_buf[DIAG_BUF_SIZE];
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int diag_size = 0;
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int diag_next = 0;
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/* Declare some local functions. */
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FORWARD _PROTOTYPE(void init_server, (void) );
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FORWARD _PROTOTYPE(void get_work, (void) );
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FORWARD _PROTOTYPE(void reply, (int whom, int result) );
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/*===========================================================================*
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* main *
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*===========================================================================*/
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PUBLIC void main(void)
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{
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/* This is the main routine of this service. The main loop consists of
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* three major activities: getting new work, processing the work, and
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* sending the reply. The loop never terminates, unless a panic occurs.
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*/
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int result;
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/* Initialize the server, then go to work. */
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init_server();
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/* Main loop - get work and do it, forever. */
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while (TRUE) {
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/* Wait for incoming message, sets 'callnr' and 'who'. */
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get_work();
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switch (callnr) {
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case NEW_KMESS:
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result = do_new_kmess(&m_in);
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break;
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case DIAGNOSTICS:
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result = do_diagnostics(&m_in);
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break;
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case FKEY_PRESSED:
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result = do_fkey_pressed(&m_in);
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break;
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case HARD_STOP:
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sys_exit(0);
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/* never reached */
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continue;
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default:
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printf("Warning, IS got unexpected request %d from %d\n",
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m_in.m_type, m_in.m_source);
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result = EINVAL;
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}
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/* Finally send reply message, unless disabled. */
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if (result != EDONTREPLY) {
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reply(who, result);
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}
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}
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}
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/*===========================================================================*
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* init_server *
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*===========================================================================*/
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PRIVATE void init_server()
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{
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/* Initialize the information service. */
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message m;
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int i;
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/* Set own process number. */
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is_proc_nr = IS_PROC_NR;
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/* Set key mappings. IS takes all of F1-F12 and Shift+F1-F6 . */
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m.FKEY_FKEYS = m.FKEY_SFKEYS = 0;
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for (i=1; i<=12; i++) bit_set(m.FKEY_FKEYS, i);
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for (i=1; i<= 6; i++) bit_set(m.FKEY_SFKEYS, i);
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m.m_type = FKEY_CONTROL;
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m.FKEY_REQUEST = FKEY_MAP;
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if (OK != (i=sendrec(TTY, &m)))
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report("IS", "warning, sendrec failed:", i);
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/* Display status message ... */
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report("IS", "information service is alive and kicking", NO_NUM);
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}
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/*===========================================================================*
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* get_work *
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*===========================================================================*/
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PRIVATE void get_work()
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{
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int status = 0;
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status = receive(ANY, &m_in); /* this blocks until message arrives */
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if (OK != status)
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panic("IS","failed to receive message!", status);
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who = m_in.m_source; /* message arrived! set sender */
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callnr = m_in.m_type; /* set function call number */
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}
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/*===========================================================================*
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* reply *
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*===========================================================================*/
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PRIVATE void reply(who, result)
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int who; /* destination */
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int result; /* report result to replyee */
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{
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int send_status;
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m_out.m_type = result; /* build reply message */
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send_status = send(who, &m_out); /* send the message */
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if (OK != send_status)
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panic("IS", "unable to send reply!", send_status);
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}
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