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      1 /*	$NetBSD: sysmon_component.c,v 1.3 2016/01/26 23:12:16 pooka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: sysmon_component.c,v 1.3 2016/01/26 23:12:16 pooka Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/conf.h>
     33 #include <sys/device.h>
     34 #include <sys/stat.h>
     35 
     36 #include <dev/sysmon/sysmon_taskq.h>
     37 #include <dev/sysmon/sysmonvar.h>
     38 
     39 #include <rump-sys/kern.h>
     40 #include <rump-sys/dev.h>
     41 #include <rump-sys/vfs.h>
     42 
     43 RUMP_COMPONENT(RUMP_COMPONENT_DEV)
     44 {
     45 	extern const struct cdevsw sysmon_cdevsw;
     46 	devmajor_t bmaj, cmaj;
     47 	int error;
     48 
     49 	/*
     50 	 * Temporarily attach the devsw so we can determine our
     51 	 * major device number.  We'll detach it immediately, so
     52 	 * normal module initialization can permanently attach.
     53 	 */
     54 	bmaj = cmaj = -1;
     55 	if ((error = devsw_attach("sysmon", NULL, &bmaj,
     56 	    &sysmon_cdevsw, &cmaj)) != 0)
     57 		panic("sysmon devsw attach failed: %d", error);
     58 	devsw_detach(NULL, &sysmon_cdevsw);
     59 
     60 	if ((error = rump_vfs_makeonedevnode(S_IFCHR, "/dev/sysmon",
     61 	    cmaj, SYSMON_MINOR_ENVSYS)) != 0)
     62 		panic("cannot create /dev/sysmon: %d", error);
     63 	if ((error = rump_vfs_makeonedevnode(S_IFCHR, "/dev/watchdog",
     64 	    cmaj, SYSMON_MINOR_WDOG)) != 0)
     65 		panic("cannot create /dev/watchdog: %d", error);
     66 	if ((error = rump_vfs_makeonedevnode(S_IFCHR, "/dev/power",
     67 	    cmaj, SYSMON_MINOR_POWER)) != 0)
     68 		panic("cannot create /dev/power: %d", error);
     69 }
     70