devopen.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: devopen.c,v 1.1.2.2 2011/02/08 18:05:10 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /*- 4 1.1.2.2 bouyer * Copyright (c) 1992, 1993 5 1.1.2.2 bouyer * The Regents of the University of California. All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * This code is derived from software contributed to Berkeley by 8 1.1.2.2 bouyer * Ralph Campbell. 9 1.1.2.2 bouyer * 10 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 12 1.1.2.2 bouyer * are met: 13 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.1.2.2 bouyer * 3. Neither the name of the University nor the names of its contributors 19 1.1.2.2 bouyer * may be used to endorse or promote products derived from this software 20 1.1.2.2 bouyer * without specific prior written permission. 21 1.1.2.2 bouyer * 22 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.1.2.2 bouyer * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.1.2.2 bouyer * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.1.2.2 bouyer * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.1.2.2 bouyer * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.1.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.1.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.1.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.1.2.2 bouyer * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.1.2.2 bouyer * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.1.2.2 bouyer * SUCH DAMAGE. 33 1.1.2.2 bouyer * 34 1.1.2.2 bouyer * @(#)devopen.c 8.1 (Berkeley) 6/10/93 35 1.1.2.2 bouyer */ 36 1.1.2.2 bouyer 37 1.1.2.2 bouyer #include <lib/libsa/stand.h> 38 1.1.2.2 bouyer #include <lib/libkern/libkern.h> 39 1.1.2.2 bouyer 40 1.1.2.2 bouyer /* 41 1.1.2.2 bouyer * Decode the string 'fname', open the device and return the remaining 42 1.1.2.2 bouyer * file name if any. 43 1.1.2.2 bouyer */ 44 1.1.2.2 bouyer int 45 1.1.2.2 bouyer devopen(struct open_file *f, 46 1.1.2.2 bouyer const char *fname, 47 1.1.2.2 bouyer char **file) /* out */ 48 1.1.2.2 bouyer { 49 1.1.2.2 bouyer int ctlr = 0, unit = 0, part = 0; 50 1.1.2.2 bouyer int c, rc; 51 1.1.2.2 bouyer char device_name[20]; 52 1.1.2.2 bouyer const char *cp; 53 1.1.2.2 bouyer char *ncp; 54 1.1.2.2 bouyer #if !defined(LIBSA_SINGLE_DEVICE) 55 1.1.2.2 bouyer int i; 56 1.1.2.2 bouyer struct devsw *dp; 57 1.1.2.2 bouyer #endif 58 1.1.2.2 bouyer 59 1.1.2.2 bouyer cp = fname; 60 1.1.2.2 bouyer ncp = device_name; 61 1.1.2.2 bouyer 62 1.1.2.2 bouyer /* Require the form CTRL/DEVNAME(UNIT,PART)/FILENAME e.g. '0/ace(0,0)/netbsd' '0/tftp(0,0)/netbsd' 63 1.1.2.2 bouyer */ 64 1.1.2.2 bouyer 65 1.1.2.2 bouyer /* get controller number */ 66 1.1.2.2 bouyer if ((c = *cp) >= '0' && c <= '9') { 67 1.1.2.2 bouyer ctlr = c - '0'; 68 1.1.2.2 bouyer c = *++cp; 69 1.1.2.2 bouyer } else 70 1.1.2.2 bouyer return (ENXIO); 71 1.1.2.2 bouyer 72 1.1.2.2 bouyer if (c != '/') 73 1.1.2.2 bouyer return (ENXIO); 74 1.1.2.2 bouyer c = *++cp; 75 1.1.2.2 bouyer 76 1.1.2.2 bouyer /* get device name */ 77 1.1.2.2 bouyer while ((c = *cp) != '\0') { 78 1.1.2.2 bouyer if ((c == '(') || (c == '/')) { 79 1.1.2.2 bouyer cp++; 80 1.1.2.2 bouyer break; 81 1.1.2.2 bouyer } 82 1.1.2.2 bouyer if (ncp < device_name + sizeof(device_name) - 1) 83 1.1.2.2 bouyer *ncp++ = c; 84 1.1.2.2 bouyer cp++; 85 1.1.2.2 bouyer } 86 1.1.2.2 bouyer if (ncp == device_name) 87 1.1.2.2 bouyer return (ENXIO); 88 1.1.2.2 bouyer 89 1.1.2.2 bouyer /* get device number */ 90 1.1.2.2 bouyer if ((c = *cp) >= '0' && c <= '9') { 91 1.1.2.2 bouyer unit = c - '0'; 92 1.1.2.2 bouyer c = *++cp; 93 1.1.2.2 bouyer } else 94 1.1.2.2 bouyer return (ENXIO); 95 1.1.2.2 bouyer 96 1.1.2.2 bouyer if (c == ',') { 97 1.1.2.2 bouyer /* get partition number */ 98 1.1.2.2 bouyer if ((c = *++cp) >= '0' && c <= '9') { 99 1.1.2.2 bouyer part = c - '0'; 100 1.1.2.2 bouyer c = *++cp; 101 1.1.2.2 bouyer } else 102 1.1.2.2 bouyer return (ENXIO); 103 1.1.2.2 bouyer } else 104 1.1.2.2 bouyer return (ENXIO); 105 1.1.2.2 bouyer 106 1.1.2.2 bouyer if (c == ')') 107 1.1.2.2 bouyer cp++; 108 1.1.2.2 bouyer else 109 1.1.2.2 bouyer return (ENXIO); 110 1.1.2.2 bouyer 111 1.1.2.2 bouyer *ncp = '\0'; 112 1.1.2.2 bouyer 113 1.1.2.2 bouyer #ifdef LIBSA_SINGLE_DEVICE 114 1.1.2.2 bouyer rc = DEV_OPEN(dp)(f, ctlr, unit, part); 115 1.1.2.2 bouyer #else /* !LIBSA_SINGLE_DEVICE */ 116 1.1.2.2 bouyer for (dp = devsw, i = 0; i < ndevs; dp++, i++) 117 1.1.2.2 bouyer if (dp->dv_name && strcmp(device_name, dp->dv_name) == 0) 118 1.1.2.2 bouyer goto fnd; 119 1.1.2.2 bouyer printf("Unknown device '%s'\nKnown devices are:", device_name); 120 1.1.2.2 bouyer for (dp = devsw, i = 0; i < ndevs; dp++, i++) 121 1.1.2.2 bouyer if (dp->dv_name) 122 1.1.2.2 bouyer printf(" %s", dp->dv_name); 123 1.1.2.2 bouyer printf("\n"); 124 1.1.2.2 bouyer return (ENXIO); 125 1.1.2.2 bouyer 126 1.1.2.2 bouyer fnd: 127 1.1.2.2 bouyer #ifdef BOOTNET 128 1.1.2.2 bouyer if (strcmp(device_name, "tftp") == 0) 129 1.1.2.2 bouyer rc = (dp->dv_open)(f, device_name); 130 1.1.2.2 bouyer else 131 1.1.2.2 bouyer #endif /* BOOTNET */ 132 1.1.2.2 bouyer rc = (dp->dv_open)(f, ctlr, unit, part, cp); 133 1.1.2.2 bouyer #endif /* !LIBSA_SINGLE_DEVICE */ 134 1.1.2.2 bouyer if (rc) 135 1.1.2.2 bouyer return (rc); 136 1.1.2.2 bouyer 137 1.1.2.2 bouyer #ifndef LIBSA_SINGLE_DEVICE 138 1.1.2.2 bouyer f->f_dev = dp; 139 1.1.2.2 bouyer #endif 140 1.1.2.2 bouyer if (file && *cp != '\0') 141 1.1.2.2 bouyer *file = (char *)cp; /* XXX */ 142 1.1.2.2 bouyer return (0); 143 1.1.2.2 bouyer } 144
Indexes created Thu Oct 02 10:09:58 GMT 2025