1 /* $NetBSD: devopen.c,v 1.2 2003/03/17 03:04:51 rafal 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 * If device starts with a PCI bus specifier, skip past it so the 70 * device-matching code below gets the actual device type. Leave 71 * fname as is, since it'll be passed back to ARCS to open the 72 * device. This is necessary for the IP32. 73 */ 74 if (strncmp(cp, "pci", 3) == 0) { 75 while (*ncp && *ncp++ != ')') 76 ; 77 if (*ncp) 78 cp = ncp; 79 } 80 81 /* 82 * Look for a string like 'scsi(0)disk(0)rdisk(0)partition(0)netbsd' 83 * or 'dksc(0,0,0)/netbsd' (the file can either be a relative path 84 * or an abosolute path). 85 */ 86 if (strncmp(cp, "scsi", 4) == 0) { 87 strcpy(devtype, "scsi"); 88 } else if (strncmp(cp, "dksc", 4) == 0) { 89 strcpy(devtype, "dksi"); 90 } else { 91 return ENXIO; 92 } 93 94 while (ncp != NULL && *ncp != 0) { 95 while (*ncp && *ncp++ != ')') 96 ; 97 if (*ncp) 98 cp = ncp; 99 } 100 101 strncpy(namebuf, fname, sizeof(namebuf)); 102 namebuf[cp - fname] = 0; 103 104 printf("devopen: %s type %s file %s\n", namebuf, devtype, cp); 105 #ifdef LIBSA_SINGLE_DEVICE 106 rc = DEV_OPEN(dp)(f, fname); 107 #else /* !LIBSA_SINGLE_DEVICE */ 108 for (dp = devsw, i = 0; i < ndevs; dp++, i++) 109 if (dp->dv_name && strcmp(devtype, dp->dv_name) == 0) 110 goto fnd; 111 printf("Unknown device '%s'\nKnown devices are:", devtype); 112 for (dp = devsw, i = 0; i < ndevs; dp++, i++) 113 if (dp->dv_name) 114 printf(" %s", dp->dv_name); 115 printf("\n"); 116 return ENXIO; 117 118 fnd: 119 rc = (dp->dv_open)(f, namebuf); 120 #endif /* !LIBSA_SINGLE_DEVICE */ 121 if (rc) 122 return rc; 123 124 #ifndef LIBSA_SINGLE_DEVICE 125 f->f_dev = dp; 126 #endif 127 if (file && *cp != '\0') 128 *file = (char *)cp; /* XXX */ 129 return 0; 130 } 131