devopen.c revision 1.4
1 /* $NetBSD: devopen.c,v 1.4 2014/01/03 06:15:10 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1992 OMRON Corporation. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * OMRON Corporation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)conf.c 8.1 (Berkeley) 6/10/93 38 */ 39 /* 40 * Copyright (c) 1992, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * OMRON Corporation. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)conf.c 8.1 (Berkeley) 6/10/93 71 */ 72 73 #include <lib/libkern/libkern.h> 74 #include <luna68k/stand/boot/samachdep.h> 75 #include <machine/disklabel.h> 76 77 #define MAXDEVNAME 16 78 79 static int make_device(const char *, int *, int *, int *, char **); 80 81 int 82 devopen(struct open_file *f, const char *fname, char **file) 83 { 84 int dev, unit, part; 85 int error; 86 struct devsw *dp; 87 int i; 88 89 if (make_device(fname, &dev, &unit, &part, file) != 0) 90 return ENXIO; 91 92 #ifdef DEBUG 93 printf("%s: %s(%d,%d)%s\n", __func__, 94 devsw[dev].dv_name, unit, part, *file); 95 #endif 96 dp = &devsw[dev]; 97 error = (*dp->dv_open)(f, unit, part); 98 if (error != 0) { 99 #ifdef DEBUG 100 printf("%s: open %s(%d,%d)%s failed (%s)\n", __func__, 101 devsw[dev].dv_name, unit, part, *file, strerror(error)); 102 #endif 103 return error; 104 } 105 106 for (i = 0; i < nfsys_disk; i++) 107 file_system[i] = file_system_disk[i]; 108 nfsys = nfsys_disk; 109 110 #ifdef SUPPORT_ETHERNET 111 if (strcmp(dp->dv_name, "le") == 0) { 112 /* XXX mixing local fs_ops on netboot could be troublesome */ 113 file_system[0] = file_system_nfs[0]; 114 nfsys = 1; 115 } 116 #endif 117 118 f->f_dev = dp; 119 120 return 0; 121 } 122 123 int 124 make_device(const char *str, int *devp, int *unitp, int *partp, char **fname) 125 { 126 const char *cp; 127 struct devsw *dp; 128 int major, unit = 0, part = 0; 129 int i; 130 char devname[MAXDEVNAME + 1]; 131 132 /* 133 * parse path strings 134 */ 135 /* find end of dev type name */ 136 for (cp = str, i = 0; *cp != '\0' && *cp != '(' && i < MAXDEVNAME; i++) 137 devname[i] = *cp++; 138 if (*cp != '(') { 139 return (-1); 140 } 141 devname[i] = '\0'; 142 /* compare dev type name */ 143 for (dp = devsw; dp->dv_name; dp++) 144 if (!strcmp(devname, dp->dv_name)) 145 break; 146 cp++; 147 if (dp->dv_name == NULL) { 148 return (-1); 149 } 150 major = dp - devsw; 151 /* get mixed controller and unit number */ 152 for (; *cp != ',' && *cp != ')'; cp++) { 153 if (*cp == '\0') 154 return -1; 155 if (*cp >= '0' && *cp <= '9') 156 unit = unit * 10 + *cp - '0'; 157 } 158 if (unit < 0 || unit >= 20 || (unit % 10) > 7) { 159 #ifdef DEBUG 160 printf("%s: invalid unit number (%d)\n", __func__, unit); 161 #endif 162 return (-1); 163 } 164 /* get optional partition number */ 165 if (*cp == ',') 166 cp++; 167 168 for (; /* *cp != ',' && */ *cp != ')'; cp++) { 169 if (*cp == '\0') 170 return -1; 171 if (*cp >= '0' && *cp <= '9') 172 part = part * 10 + *cp - '0'; 173 } 174 if (part < 0 || part >= MAXPARTITIONS) { 175 #ifdef DEBUG 176 printf("%s: invalid partition number (%d)\n", __func__, part); 177 #endif 178 return (-1); 179 } 180 /* check out end of dev spec */ 181 *devp = major; 182 *unitp = unit; 183 *partp = part; 184 cp++; 185 if (*cp == '\0') 186 *fname = "netbsd"; 187 else 188 *fname = __UNCONST(cp); /* XXX */ 189 #ifdef DEBUG 190 printf("%s: major = %d, unit = %d, part = %d, fname = %s\n", 191 __func__, major, unit, part, *fname); 192 #endif 193 194 return 0; 195 } 196
Indexes created Tue Sep 23 07:09:52 GMT 2025