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      1 /* $NetBSD: devopen.c,v 1.3 2005/12/11 12:17:34 christos Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2003 Naoto Shimazaki.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY NAOTO SHIMAZAKI AND CONTRIBUTORS ``AS IS''
     17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     18  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE NAOTO OR CONTRIBUTORS BE
     20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     26  * THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: devopen.c,v 1.3 2005/12/11 12:17:34 christos Exp $");
     30 
     31 #include <lib/libsa/stand.h>
     32 #include <lib/libkern/libkern.h>
     33 
     34 #include "extern.h"
     35 
     36 int
     37 devopen(struct open_file *f, const char *fname, char **file)
     38 {
     39 	int		i;
     40 	char		devname[IFNAME_SIZE];
     41 	const char	*basename;
     42 
     43 	for (i = 0; i < IFNAME_SIZE; i++) {
     44 		if (fname[i] == '\0') {
     45 			devname[i] = '\0';
     46 			basename = &fname[i];
     47 			break;
     48 		}
     49 		if (fname[i] == ':') {
     50 			devname[i] = '\0';
     51 			basename = &fname[i + 1];
     52 			break;
     53 		}
     54 		devname[i] = fname[i];
     55 	}
     56 
     57 	for (i = 0; i < ndevs; i++) {
     58 		if (strcmp(devname, devsw[i].dv_name) == 0) {
     59 			f->f_dev = &devsw[i];
     60 			return DEV_OPEN(f->f_dev)(f, basename, file);
     61 		}
     62 	}
     63 
     64 	printf("No such device - Configured devices are:\n");
     65 	for (i = 0; i < ndevs; i++) {
     66 		if (devsw[i].dv_name)
     67 			printf(" %s", devsw[i].dv_name);
     68 	}
     69 	printf("\n");
     70 
     71 	return ENODEV;
     72 }
     73