devopen.c revision 1.1.4.2
1 1.1.4.2 rmind /* $NetBSD: devopen.c,v 1.1.4.2 2011/03/05 20:50:01 rmind Exp $ */ 2 1.1.4.2 rmind 3 1.1.4.2 rmind /*- 4 1.1.4.2 rmind * Copyright (c) 1992, 1993 5 1.1.4.2 rmind * The Regents of the University of California. All rights reserved. 6 1.1.4.2 rmind * 7 1.1.4.2 rmind * This code is derived from software contributed to Berkeley by 8 1.1.4.2 rmind * Ralph Campbell. 9 1.1.4.2 rmind * 10 1.1.4.2 rmind * Redistribution and use in source and binary forms, with or without 11 1.1.4.2 rmind * modification, are permitted provided that the following conditions 12 1.1.4.2 rmind * are met: 13 1.1.4.2 rmind * 1. Redistributions of source code must retain the above copyright 14 1.1.4.2 rmind * notice, this list of conditions and the following disclaimer. 15 1.1.4.2 rmind * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.4.2 rmind * notice, this list of conditions and the following disclaimer in the 17 1.1.4.2 rmind * documentation and/or other materials provided with the distribution. 18 1.1.4.2 rmind * 3. Neither the name of the University nor the names of its contributors 19 1.1.4.2 rmind * may be used to endorse or promote products derived from this software 20 1.1.4.2 rmind * without specific prior written permission. 21 1.1.4.2 rmind * 22 1.1.4.2 rmind * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.1.4.2 rmind * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.1.4.2 rmind * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.1.4.2 rmind * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.1.4.2 rmind * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.1.4.2 rmind * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.1.4.2 rmind * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.1.4.2 rmind * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.1.4.2 rmind * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.1.4.2 rmind * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.1.4.2 rmind * SUCH DAMAGE. 33 1.1.4.2 rmind * 34 1.1.4.2 rmind * @(#)devopen.c 8.1 (Berkeley) 6/10/93 35 1.1.4.2 rmind */ 36 1.1.4.2 rmind 37 1.1.4.2 rmind #include <lib/libsa/stand.h> 38 1.1.4.2 rmind #include <lib/libkern/libkern.h> 39 1.1.4.2 rmind 40 1.1.4.2 rmind /* 41 1.1.4.2 rmind * Decode the string 'fname', open the device and return the remaining 42 1.1.4.2 rmind * file name if any. 43 1.1.4.2 rmind */ 44 1.1.4.2 rmind int 45 1.1.4.2 rmind devopen(struct open_file *f, 46 1.1.4.2 rmind const char *fname, 47 1.1.4.2 rmind char **file) /* out */ 48 1.1.4.2 rmind { 49 1.1.4.2 rmind int ctlr = 0, unit = 0, part = 0; 50 1.1.4.2 rmind int c, rc; 51 1.1.4.2 rmind char device_name[20]; 52 1.1.4.2 rmind const char *cp; 53 1.1.4.2 rmind char *ncp; 54 1.1.4.2 rmind #if !defined(LIBSA_SINGLE_DEVICE) 55 1.1.4.2 rmind int i; 56 1.1.4.2 rmind struct devsw *dp; 57 1.1.4.2 rmind #endif 58 1.1.4.2 rmind 59 1.1.4.2 rmind cp = fname; 60 1.1.4.2 rmind ncp = device_name; 61 1.1.4.2 rmind 62 1.1.4.2 rmind /* Require the form CTRL/DEVNAME(UNIT,PART)/FILENAME e.g. '0/ace(0,0)/netbsd' '0/tftp(0,0)/netbsd' 63 1.1.4.2 rmind */ 64 1.1.4.2 rmind 65 1.1.4.2 rmind /* get controller number */ 66 1.1.4.2 rmind if ((c = *cp) >= '0' && c <= '9') { 67 1.1.4.2 rmind ctlr = c - '0'; 68 1.1.4.2 rmind c = *++cp; 69 1.1.4.2 rmind } else 70 1.1.4.2 rmind return (ENXIO); 71 1.1.4.2 rmind 72 1.1.4.2 rmind if (c != '/') 73 1.1.4.2 rmind return (ENXIO); 74 1.1.4.2 rmind c = *++cp; 75 1.1.4.2 rmind 76 1.1.4.2 rmind /* get device name */ 77 1.1.4.2 rmind while ((c = *cp) != '\0') { 78 1.1.4.2 rmind if ((c == '(') || (c == '/')) { 79 1.1.4.2 rmind cp++; 80 1.1.4.2 rmind break; 81 1.1.4.2 rmind } 82 1.1.4.2 rmind if (ncp < device_name + sizeof(device_name) - 1) 83 1.1.4.2 rmind *ncp++ = c; 84 1.1.4.2 rmind cp++; 85 1.1.4.2 rmind } 86 1.1.4.2 rmind if (ncp == device_name) 87 1.1.4.2 rmind return (ENXIO); 88 1.1.4.2 rmind 89 1.1.4.2 rmind /* get device number */ 90 1.1.4.2 rmind if ((c = *cp) >= '0' && c <= '9') { 91 1.1.4.2 rmind unit = c - '0'; 92 1.1.4.2 rmind c = *++cp; 93 1.1.4.2 rmind } else 94 1.1.4.2 rmind return (ENXIO); 95 1.1.4.2 rmind 96 1.1.4.2 rmind if (c == ',') { 97 1.1.4.2 rmind /* get partition number */ 98 1.1.4.2 rmind if ((c = *++cp) >= '0' && c <= '9') { 99 1.1.4.2 rmind part = c - '0'; 100 1.1.4.2 rmind c = *++cp; 101 1.1.4.2 rmind } else 102 1.1.4.2 rmind return (ENXIO); 103 1.1.4.2 rmind } else 104 1.1.4.2 rmind return (ENXIO); 105 1.1.4.2 rmind 106 1.1.4.2 rmind if (c == ')') 107 1.1.4.2 rmind cp++; 108 1.1.4.2 rmind else 109 1.1.4.2 rmind return (ENXIO); 110 1.1.4.2 rmind 111 1.1.4.2 rmind *ncp = '\0'; 112 1.1.4.2 rmind 113 1.1.4.2 rmind #ifdef LIBSA_SINGLE_DEVICE 114 1.1.4.2 rmind rc = DEV_OPEN(dp)(f, ctlr, unit, part); 115 1.1.4.2 rmind #else /* !LIBSA_SINGLE_DEVICE */ 116 1.1.4.2 rmind for (dp = devsw, i = 0; i < ndevs; dp++, i++) 117 1.1.4.2 rmind if (dp->dv_name && strcmp(device_name, dp->dv_name) == 0) 118 1.1.4.2 rmind goto fnd; 119 1.1.4.2 rmind printf("Unknown device '%s'\nKnown devices are:", device_name); 120 1.1.4.2 rmind for (dp = devsw, i = 0; i < ndevs; dp++, i++) 121 1.1.4.2 rmind if (dp->dv_name) 122 1.1.4.2 rmind printf(" %s", dp->dv_name); 123 1.1.4.2 rmind printf("\n"); 124 1.1.4.2 rmind return (ENXIO); 125 1.1.4.2 rmind 126 1.1.4.2 rmind fnd: 127 1.1.4.2 rmind #ifdef BOOTNET 128 1.1.4.2 rmind if (strcmp(device_name, "tftp") == 0) 129 1.1.4.2 rmind rc = (dp->dv_open)(f, device_name); 130 1.1.4.2 rmind else 131 1.1.4.2 rmind #endif /* BOOTNET */ 132 1.1.4.2 rmind rc = (dp->dv_open)(f, ctlr, unit, part, cp); 133 1.1.4.2 rmind #endif /* !LIBSA_SINGLE_DEVICE */ 134 1.1.4.2 rmind if (rc) 135 1.1.4.2 rmind return (rc); 136 1.1.4.2 rmind 137 1.1.4.2 rmind #ifndef LIBSA_SINGLE_DEVICE 138 1.1.4.2 rmind f->f_dev = dp; 139 1.1.4.2 rmind #endif 140 1.1.4.2 rmind if (file && *cp != '\0') 141 1.1.4.2 rmind *file = (char *)cp; /* XXX */ 142 1.1.4.2 rmind return (0); 143 1.1.4.2 rmind } 144
Indexes created Thu Oct 02 10:09:58 GMT 2025