1 /* $NetBSD: devopen.c,v 1.11 2015/09/01 13:55:25 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 int
devopen(struct open_file * f,const char * fname,char ** file)80 devopen(struct open_file *f, const char *fname, char **file)
81 {
82 int dev, unit, part;
83 int error;
84 struct devsw *dp;
85 int i;
86
87 if (make_device(fname, &dev, &unit, &part, file) != 0)
88 return ENXIO;
89
90 #ifdef DEBUG
91 printf("%s: %s(%d,%d)%s\n", __func__,
92 devsw[dev].dv_name, unit, part, *file);
93 #endif
94 dp = &devsw[dev];
95 error = (*dp->dv_open)(f, unit, part);
96 if (error != 0) {
97 #ifdef DEBUG
98 printf("%s: open %s(%d,%d)%s failed (%s)\n", __func__,
99 devsw[dev].dv_name, unit, part, *file, strerror(error));
100 #endif
101 return error;
102 }
103
104 for (i = 0; i < nfsys_disk; i++)
105 file_system[i] = file_system_disk[i];
106 nfsys = nfsys_disk;
107
108 #ifdef SUPPORT_ETHERNET
109 if (strcmp(dp->dv_name, "le") == 0) {
110 /* XXX mixing local fs_ops on netboot could be troublesome */
111 file_system[0] = file_system_nfs[0];
112 nfsys = 1;
113 }
114 #endif
115
116 f->f_dev = dp;
117
118 return 0;
119 }
120
121 int
make_device(const char * str,int * devp,int * unitp,int * partp,char ** fname)122 make_device(const char *str, int *devp, int *unitp, int *partp, char **fname)
123 {
124 const char *cp;
125 struct devsw *dp;
126 int dev, unit, part;
127 int i;
128 char devname[MAXDEVNAME + 1];
129 bool haveunit;
130
131 unit = 0;
132 part = 0;
133
134 /*
135 * parse path strings
136 */
137 /* find end of dev type name */
138 for (cp = str, i = 0; *cp != '\0' && *cp != '(' && i < MAXDEVNAME; i++)
139 devname[i] = *cp++;
140 if (*cp != '(') {
141 /* no device name is specified; assume default */
142 cp = str;
143 /* compare dev type name */
144 for (dp = devsw; dp->dv_name; dp++)
145 if (!strcmp(default_bootdev, dp->dv_name))
146 break;
147 if (dp->dv_name == NULL) {
148 return -1;
149 }
150 dev = dp - devsw;
151 unit = default_unit;
152 } else {
153 devname[i] = '\0';
154 /* compare dev type name */
155 for (dp = devsw; dp->dv_name; dp++)
156 if (!strcmp(devname, dp->dv_name))
157 break;
158 cp++;
159 if (dp->dv_name == NULL) {
160 return -1;
161 }
162 dev = dp - devsw;
163 /* get mixed controller and unit number */
164 haveunit = false;
165 for (; *cp != ',' && *cp != ')'; cp++) {
166 if (*cp == '\0')
167 return -1;
168 if (*cp >= '0' && *cp <= '9') {
169 unit = unit * 10 + *cp - '0';
170 haveunit = true;
171 }
172 }
173 if (unit < 0 || CTLR(unit) >= 2 || TARGET(unit) > 7) {
174 #ifdef DEBUG
175 printf("%s: invalid unit number (%d)\n",
176 __func__, unit);
177 #endif
178 return -1;
179 }
180 if (!haveunit && strcmp(devname, default_bootdev) == 0)
181 unit = default_unit;
182 /* get optional partition number */
183 if (*cp == ',')
184 cp++;
185
186 for (; /* *cp != ',' && */ *cp != ')'; cp++) {
187 if (*cp == '\0')
188 return -1;
189 if (*cp >= '0' && *cp <= '9')
190 part = part * 10 + *cp - '0';
191 }
192 if (part < 0 || part >= MAXPARTITIONS) {
193 #ifdef DEBUG
194 printf("%s: invalid partition number (%d)\n",
195 __func__, part);
196 #endif
197 return -1;
198 }
199 cp++;
200 }
201 /* check out end of dev spec */
202 *devp = dev;
203 *unitp = unit;
204 *partp = part;
205 if (fname != NULL) {
206 if (*cp == '\0')
207 *fname = "netbsd";
208 else
209 *fname = __UNCONST(cp); /* XXX */
210 }
211 #ifdef DEBUG
212 printf("%s: dev = %d, unit = %d, part = %d, fname = %s\n",
213 __func__, dev, unit, part, fname != NULL ? *fname : "");
214 #endif
215
216 return 0;
217 }
218