devopen.c revision 1.1.2.2
1 1.1.2.2 nathanw /* $NetBSD: devopen.c,v 1.1.2.2 2002/11/11 22:03:46 nathanw Exp $ */ 2 1.1.2.2 nathanw 3 1.1.2.2 nathanw /*- 4 1.1.2.2 nathanw * Copyright (c) 1992, 1993 5 1.1.2.2 nathanw * The Regents of the University of California. All rights reserved. 6 1.1.2.2 nathanw * 7 1.1.2.2 nathanw * This code is derived from software contributed to Berkeley by 8 1.1.2.2 nathanw * Ralph Campbell. 9 1.1.2.2 nathanw * 10 1.1.2.2 nathanw * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 nathanw * modification, are permitted provided that the following conditions 12 1.1.2.2 nathanw * are met: 13 1.1.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 nathanw * documentation and/or other materials provided with the distribution. 18 1.1.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 nathanw * must display the following acknowledgement: 20 1.1.2.2 nathanw * This product includes software developed by the University of 21 1.1.2.2 nathanw * California, Berkeley and its contributors. 22 1.1.2.2 nathanw * 4. Neither the name of the University nor the names of its contributors 23 1.1.2.2 nathanw * may be used to endorse or promote products derived from this software 24 1.1.2.2 nathanw * without specific prior written permission. 25 1.1.2.2 nathanw * 26 1.1.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.1.2.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.1.2.2 nathanw * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.1.2.2 nathanw * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.1.2.2 nathanw * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.1.2.2 nathanw * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.1.2.2 nathanw * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.1.2.2 nathanw * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.1.2.2 nathanw * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.1.2.2 nathanw * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.1.2.2 nathanw * SUCH DAMAGE. 37 1.1.2.2 nathanw * 38 1.1.2.2 nathanw * @(#)devopen.c 8.1 (Berkeley) 6/10/93 39 1.1.2.2 nathanw */ 40 1.1.2.2 nathanw 41 1.1.2.2 nathanw #include <lib/libsa/stand.h> 42 1.1.2.2 nathanw 43 1.1.2.2 nathanw /* 44 1.1.2.2 nathanw * Decode the string 'fname', open the device and return the remaining 45 1.1.2.2 nathanw * file name if any. 46 1.1.2.2 nathanw */ 47 1.1.2.2 nathanw int 48 1.1.2.2 nathanw devopen(f, fname, file) 49 1.1.2.2 nathanw struct open_file *f; 50 1.1.2.2 nathanw const char *fname; 51 1.1.2.2 nathanw char **file; /* out */ 52 1.1.2.2 nathanw { 53 1.1.2.2 nathanw register char *cp; 54 1.1.2.2 nathanw register char *ncp; 55 1.1.2.2 nathanw register struct devsw *dp; 56 1.1.2.2 nathanw #if 0 57 1.1.2.2 nathanw register int c, i; 58 1.1.2.2 nathanw #endif 59 1.1.2.2 nathanw int ctlr = 0, unit = 0, part = 0; 60 1.1.2.2 nathanw char namebuf[20]; 61 1.1.2.2 nathanw int rc; 62 1.1.2.2 nathanw 63 1.1.2.2 nathanw cp = (char *)fname; 64 1.1.2.2 nathanw ncp = namebuf; 65 1.1.2.2 nathanw 66 1.1.2.2 nathanw #if 0 67 1.1.2.2 nathanw /* look for a string like '5/rz0/vmunix' or '5/rz3f/vmunix */ 68 1.1.2.2 nathanw if ((c = *cp) >= '0' && c <= '9') { 69 1.1.2.2 nathanw ctlr = c - '0'; 70 1.1.2.2 nathanw /* skip the '/' */ 71 1.1.2.2 nathanw if (*++cp != '/') 72 1.1.2.2 nathanw return (ENXIO); 73 1.1.2.2 nathanw cp++; 74 1.1.2.2 nathanw while ((c = *cp) != '\0') { 75 1.1.2.2 nathanw if (c == '/') 76 1.1.2.2 nathanw break; 77 1.1.2.2 nathanw if (c >= '0' && c <= '9') { 78 1.1.2.2 nathanw /* read unit number */ 79 1.1.2.2 nathanw unit = c - '0'; 80 1.1.2.2 nathanw 81 1.1.2.2 nathanw /* look for a partition */ 82 1.1.2.2 nathanw if ((c = *++cp) >= 'a' && c <= 'h') { 83 1.1.2.2 nathanw part = c - 'a'; 84 1.1.2.2 nathanw c = *++cp; 85 1.1.2.2 nathanw } 86 1.1.2.2 nathanw if (c != '/') 87 1.1.2.2 nathanw return (ENXIO); 88 1.1.2.2 nathanw break; 89 1.1.2.2 nathanw } 90 1.1.2.2 nathanw if (ncp < namebuf + sizeof(namebuf) - 1) 91 1.1.2.2 nathanw *ncp++ = c; 92 1.1.2.2 nathanw cp++; 93 1.1.2.2 nathanw } 94 1.1.2.2 nathanw *ncp = '\0'; 95 1.1.2.2 nathanw /* 96 1.1.2.2 nathanw * XXX 97 1.1.2.2 nathanw * pulling strchr from the C library, should pull from libkern. 98 1.1.2.2 nathanw */ 99 1.1.2.2 nathanw } else if (strchr(cp, '(')) { 100 1.1.2.2 nathanw /* expect a string like 'rz(0,0,0)vmunix' */ 101 1.1.2.2 nathanw while ((c = *cp) != '\0') { 102 1.1.2.2 nathanw if (c == '(') { 103 1.1.2.2 nathanw cp++; 104 1.1.2.2 nathanw break; 105 1.1.2.2 nathanw } 106 1.1.2.2 nathanw if (ncp < namebuf + sizeof(namebuf) - 1) 107 1.1.2.2 nathanw *ncp++ = c; 108 1.1.2.2 nathanw cp++; 109 1.1.2.2 nathanw } 110 1.1.2.2 nathanw 111 1.1.2.2 nathanw /* get controller number */ 112 1.1.2.2 nathanw if ((c = *cp) >= '0' && c <= '9') { 113 1.1.2.2 nathanw ctlr = c - '0'; 114 1.1.2.2 nathanw c = *++cp; 115 1.1.2.2 nathanw } 116 1.1.2.2 nathanw 117 1.1.2.2 nathanw if (c == ',') { 118 1.1.2.2 nathanw /* get SCSI device number */ 119 1.1.2.2 nathanw if ((c = *++cp) >= '0' && c <= '9') { 120 1.1.2.2 nathanw unit = c - '0'; 121 1.1.2.2 nathanw c = *++cp; 122 1.1.2.2 nathanw } 123 1.1.2.2 nathanw 124 1.1.2.2 nathanw if (c == ',') { 125 1.1.2.2 nathanw /* get partition number */ 126 1.1.2.2 nathanw if ((c = *++cp) >= '0' && c <= '9') { 127 1.1.2.2 nathanw part = c - '0'; 128 1.1.2.2 nathanw c = *++cp; 129 1.1.2.2 nathanw } 130 1.1.2.2 nathanw } 131 1.1.2.2 nathanw } 132 1.1.2.2 nathanw if (c != ')') 133 1.1.2.2 nathanw return (ENXIO); 134 1.1.2.2 nathanw cp++; 135 1.1.2.2 nathanw *ncp = '\0'; 136 1.1.2.2 nathanw } else { 137 1.1.2.2 nathanw #endif 138 1.1.2.2 nathanw dp = devsw; 139 1.1.2.2 nathanw ctlr = unit = part = 0; 140 1.1.2.2 nathanw goto fnd; 141 1.1.2.2 nathanw #if 0 142 1.1.2.2 nathanw } 143 1.1.2.2 nathanw 144 1.1.2.2 nathanw for (dp = devsw, i = 0; i < ndevs; dp++, i++) 145 1.1.2.2 nathanw if (dp->dv_name && strcmp(namebuf, dp->dv_name) == 0) 146 1.1.2.2 nathanw goto fnd; 147 1.1.2.2 nathanw printf("Unknown device '%s'\nKnown devices are:", namebuf); 148 1.1.2.2 nathanw for (dp = devsw, i = 0; i < ndevs; dp++, i++) 149 1.1.2.2 nathanw if (dp->dv_name) 150 1.1.2.2 nathanw printf(" %s", dp->dv_name); 151 1.1.2.2 nathanw printf("\n"); 152 1.1.2.2 nathanw return (ENXIO); 153 1.1.2.2 nathanw #endif 154 1.1.2.2 nathanw 155 1.1.2.2 nathanw fnd: 156 1.1.2.2 nathanw rc = (dp->dv_open)(f, ctlr, unit, part); 157 1.1.2.2 nathanw if (rc) 158 1.1.2.2 nathanw return (rc); 159 1.1.2.2 nathanw 160 1.1.2.2 nathanw f->f_dev = dp; 161 1.1.2.2 nathanw if (file && *cp != '\0') 162 1.1.2.2 nathanw *file = cp; 163 1.1.2.2 nathanw return (0); 164 1.1.2.2 nathanw } 165
Indexes created Tue Sep 30 07:10:03 GMT 2025