1 /* $NetBSD: devopen.c,v 1.1 2001/11/21 19:09:09 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)devopen.c 8.1 (Berkeley) 6/10/93 39 */ 40 41 #include <lib/libsa/stand.h> 42 #include <lib/libkern/libkern.h> 43 44 /* 45 * Decode the string 'fname', open the device and return the remaining 46 * file name if any. 47 */ 48 int 49 devopen(f, fname, file) 50 struct open_file *f; 51 const char *fname; 52 char **file; /* out */ 53 { 54 /* int ctlr = 0, unit = 0, part = 0; */ 55 int rc; 56 char namebuf[128]; 57 char devtype[16]; 58 const char *cp; 59 char *ncp; 60 #if !defined(LIBSA_SINGLE_DEVICE) 61 int i; 62 struct devsw *dp; 63 #endif 64 65 cp = fname; 66 ncp = (char *)fname; 67 68 /* 69 * look for a string like 'scsi(0)disk(0)rdisk(0)partition(0)netbsd' 70 * or 'dksc(0,0,0)netbsd' 71 */ 72 if (cp[0] == 's' && cp[1] == 'c' && cp[2] == 's' && cp[3] == 'i') { 73 strcpy(devtype, "scsi"); 74 } else if (cp[0] == 'd' && cp[1] == 'k' && cp[2] == 's' && cp[3] == 'c') { 75 strcpy(devtype, "dksi"); 76 } else 77 return (ENXIO); 78 while (ncp != NULL && *ncp != 0) { 79 while (*ncp && *ncp++ != ')') 80 ; 81 if (*ncp) 82 cp = ncp; 83 } 84 strncpy(namebuf, fname, sizeof(namebuf)); 85 namebuf[cp - fname] = 0; 86 87 printf("devopen: %s type %s file %s\n", namebuf, devtype, cp); 88 #ifdef LIBSA_SINGLE_DEVICE 89 rc = DEV_OPEN(dp)(f, fname); 90 #else /* !LIBSA_SINGLE_DEVICE */ 91 for (dp = devsw, i = 0; i < ndevs; dp++, i++) 92 if (dp->dv_name && strcmp(devtype, dp->dv_name) == 0) 93 goto fnd; 94 printf("Unknown device '%s'\nKnown devices are:", devtype); 95 for (dp = devsw, i = 0; i < ndevs; dp++, i++) 96 if (dp->dv_name) 97 printf(" %s", dp->dv_name); 98 printf("\n"); 99 return (ENXIO); 100 101 fnd: 102 rc = (dp->dv_open)(f, namebuf); 103 #endif /* !LIBSA_SINGLE_DEVICE */ 104 if (rc) 105 return (rc); 106 107 #ifndef LIBSA_SINGLE_DEVICE 108 f->f_dev = dp; 109 #endif 110 if (file && *cp != '\0') 111 *file = (char *)cp; /* XXX */ 112 return (0); 113 } 114