config.c

基于组件方式开发操作系统的OSKIT源代码

			return strtok(NULL, " ");
		    } else {
			puts("svgalib: Illegal chipset setting: memory is not a number");
			goto chip_us;
		    }
		}
		if (mode)
		    vga_setchipset(i);
		else
		    puts("chipset override from environment denied.");
		return ptr;
	    }
	}
	printf("svgalib: Illegal chipset setting: chipset %s\n", ptr);
      chip_us:
	puts("Correct usage: chipset driver [par1 par2]\n"
	     "where driver is one of:");
	ptb = "%s";
	for (i = 0, tabptr = driver_names; *tabptr; tabptr++, i++) {
	    if (__svgalib_driverspecslist[i] != NULL) {
		printf(ptb, *tabptr);
		ptb = ", %s";
	    }
	}
	puts("\npar1 and par2 are river dependant integers.\n"
	     "Example: Chipset VGA    or\n"
	     "Chipset VGA 0 512");
	return ptr;
#ifndef OSKIT
    case 6:			/* oldstyle config: m0-m4 */
    case 7:
    case 8:
    case 9:
    case 10:
	mouse_type = command - 6;
	break;
    case 11:			/* m9 */
	mouse_type = 9;
	break;
#endif /* !OSKIT */
    case 12:			/* oldstyle config: M0-M6 */
    case 13:
    case 14:
    case 15:
    case 16:
    case 17:
    case 18:
      monnum:
	if (!mode) {
	  mon_deny:
	    puts("Monitor setting from environment denied.");
	    break;
	} else {
	    __svgalib_horizsync.max = __svgalib_maxhsync[command - 12];
	}
	break;
    case 19:			/*nolinear */
	modeinfo_mask &= ~CAPABLE_LINEAR;
	break;
    case 20:			/*linear */
	modeinfo_mask |= CAPABLE_LINEAR;
	break;
    case 21:			/* oldstyle chipset C0 - C9 */
    case 22:
    case 23:
    case 24:
    case 25:
    case 26:
    case 27:
    case 28:
    case 29:
    case 30:
	if (!mode)
	    goto chipdeny;
	vga_setchipset(command - 21);
	break;
    case 31:			/* c0-c1 color-text selection */
	if (!mode) {
	  coltexdeny:
	    puts("Color/mono text selection from environment denied.");
	    break;
	}
	color_text = 0;
	break;
    case 32:
	if (!mode) {
	    puts("Color/mono text selection from environment denied.");
	    break;
	}
	color_text = 1;
	break;
    case 33:
    case 34:
	if (!mode)
	    goto coltexdeny;
	color_text = command - 32;
	break;
#ifndef OSKIT
    case 35:			/* Mouse type 5 - "PS2". */
	mouse_type = 5;
	break;
    case 36:
	mouse_modem_ctl &= ~(MOUSE_CHG_DTR | MOUSE_DTR_HIGH);
	break;
    case 37:
	mouse_modem_ctl &= ~MOUSE_DTR_HIGH;
	mouse_modem_ctl |= MOUSE_CHG_DTR;
	break;
    case 38:
	mouse_modem_ctl |= (MOUSE_CHG_RTS | MOUSE_RTS_HIGH);
	break;
    case 39:
	mouse_modem_ctl &= ~(MOUSE_CHG_RTS | MOUSE_RTS_HIGH);
	break;
    case 40:
	mouse_modem_ctl &= ~MOUSE_RTS_HIGH;
	mouse_modem_ctl |= MOUSE_CHG_RTS;
	break;
    case 41:
	mouse_modem_ctl |= (MOUSE_CHG_RTS | MOUSE_RTS_HIGH);
	break;
#endif /* !OSKIT */
    case 42:			/* grayscale */
	__svgalib_grayscale = 1;
	break;
    case 43:			/* horizsync */
	ptr = strtok(NULL, " ");
	if (check_digit(ptr, digits)) {		/* It is a float.. */
	    f = atof(ptr);
	    if (!mode)
		goto mon_deny;
	    __svgalib_horizsync.min = f * 1000;
	} else
	    goto hs_bad;

	ptr = strtok(NULL, " ");
	if (check_digit(ptr, digits)) {		/* It is a float.. */
	    f = atof(ptr);
	    if (!mode)
		goto mon_deny;
	    __svgalib_horizsync.max = f * 1000;
	} else {
	  hs_bad:
	    printf("svgalib: Illegal HorizSync setting.\n"
		   "Correct usage: HorizSync min_kHz max_kHz\n"
		   "Example: HorizSync 31.5 36.5\n");
	}
	break;
    case 44:			/* vertrefresh */
	ptr = strtok(NULL, " ");
	if (check_digit(ptr, digits)) {		/* It is a float.. */
	    f = atof(ptr);
	    if (!mode)
		goto mon_deny;
	    __svgalib_vertrefresh.min = f;
	} else
	    goto vr_bad;

	ptr = strtok(NULL, " ");
	if (check_digit(ptr, digits)) {		/* It is a float.. */
	    f = atof(ptr);
	    if (!mode)
		goto mon_deny;
	    __svgalib_vertrefresh.max = f;
	} else {
	  vr_bad:
	    printf("svgalib: Illegal VertRefresh setting.\n"
		   "Correct usage: VertRefresh min_Hz max_Hz\n"
		   "Example: VertRefresh 50 70\n");
	}
	break;
    case 45:{			/* modeline */
	    MonitorModeTiming mmt;
	    const struct {
		char *name;
		int val;
	    } options[] = {
		{
		    "-hsync", NHSYNC
		},
		{
		    "+hsync", PHSYNC
		},
		{
		    "-vsync", NVSYNC
		},
		{
		    "+vsync", PVSYNC
		},
		{
		    "interlace", INTERLACED
		},
		{
		    "interlaced", INTERLACED
		},
		{
		    "doublescan", DOUBLESCAN
		}
	    };
#define ML_NR_OPTS (sizeof(options)/sizeof(*options))

	    /* Skip the name of the mode */
	    ptr = strtok(NULL, " ");
	    if (!ptr)
		break;

	    ptr = strtok(NULL, " ");
	    if (!ptr)
		break;
	    mmt.pixelClock = atof(ptr) * 1000;

#define ML_GETINT(x) \
	ptr = strtok(NULL, " "); if(!ptr) break; \
	mmt.##x = atoi(ptr);

	    ML_GETINT(HDisplay);
	    ML_GETINT(HSyncStart);
	    ML_GETINT(HSyncEnd);
	    ML_GETINT(HTotal);
	    ML_GETINT(VDisplay);
	    ML_GETINT(VSyncStart);
	    ML_GETINT(VSyncEnd);
	    ML_GETINT(VTotal);
	    mmt.flags = 0;
	    while ((ptr = strtok(NULL, " "))) {
		for (i = 0; i < ML_NR_OPTS; i++)
		    if (!strcasecmp(ptr, options[i].name))
			mmt.flags |= options[i].val;
		if (i == ML_NR_OPTS)
		    break;
	    }
#undef ML_GETINT
#undef ML_NR_OPTS

	    __svgalib_addusertiming(&mmt);
	    return ptr;
	    
	}
#ifndef OSKIT
    case 46:
	if (!mode) {
	    puts("Security setting from environment denied.");
	    break;
	}
        if ( (ptr = strtok( NULL, " ")) ) {
            if (!strcasecmp("revoke-all-privs", ptr)) {
                 __svgalib_security_revokeallprivs = 1;
		 break;
            } else if (!strcasecmp("compat", ptr)) {
                 __svgalib_security_revokeallprivs = 0;
		 break;
	    }
	} 
        puts("svgalib: Unknown security options\n");
        break;
    case 47:
	ptr = strtok(NULL," ");
	if (ptr) {
	    mouse_device = strdup(ptr);
	    if (mouse_device == NULL) {
#ifndef SVGA_AOUT
              nomem:
#endif
		puts("svgalib: Fatal error: out of memory.");
		exit(1);
	    }
	} else
	    goto param_needed;
	break;
    case 48:		/* default_mode */
	if ( (ptr = strtok(NULL, " ")) != 0) {
	 int mode = vga_getmodenumber(ptr);
	  if (mode != -1) {
	    __svgalib_default_mode = mode;
	  } else {
	    printf("svgalib: config: illegal mode \'%s\' for \'%s\'\n",
	   			  ptr, vga_conf_commands[command]);
	  }
	} else {
  param_needed:
  	  printf("svgalib: config: \'%s\' requires parameter(s)",
  	  				vga_conf_commands[command]);
	  break;
	}
	break;
    case 49: /* nosigint */
	__svgalib_nosigint = 1;
	break;
    case 50: /* sigint */
	__svgalib_nosigint = 0;
	break;
    case 51: /* joystick0 */
    case 52: /* joystick1 */
    case 53: /* joystick2 */
    case 54: /* joystick3 */
	if (! (ptr = strtok(NULL, " ")) )
		goto param_needed;
#ifndef SVGA_AOUT
	if (__joystick_devicenames[command - 51])
	    free(__joystick_devicenames[command - 51]);
	__joystick_devicenames[command - 51] = strdup(ptr);
	if (!__joystick_devicenames[command - 51])
	    goto nomem;
#else
	printf("svgalib: No joystick support in a.out version.\n");
#endif
	break;
#endif /* !OSKIT */
    }
  leave:
    return strtok(NULL, " ");
}

void readconfigfile(void)
{
    if (configfileread)
	return;
    configfileread = 1;
#ifndef OSKIT
    mouse_type = -1;
#endif /* !OSKIT */
    __svgalib_read_options(vga_conf_commands, process_option);
#ifndef OSKIT
    if (mouse_type == -1) {
	mouse_type = MOUSE_MICROSOFT;	/* Default. */
	puts("svgalib: Assuming Microsoft mouse.");
    }
#endif /* !OSKIT */
    if (__svgalib_horizsync.max == 0U) {
	/* Default monitor is low end SVGA/8514. */
	__svgalib_horizsync.min = 31500U;
	__svgalib_horizsync.max = 35500U;
	puts("svgalib: Assuming low end SVGA/8514 monitor (35.5 KHz).");
    }
#ifdef DEBUG_CONF
    printf("Mouse is: %d Monitor is: H(%5.1f, %5.1f) V(%u,%u)\n", mouse_type,
      __svgalib_horizsync.min / 1000.0, __svgalib_horizsync.max / 1000.0,
	   __svgalib_vertrefresh.min, __svgalib_vertrefresh.max);
    printf("Mouse device is: %s",mouse_device);
#endif
}