devopen.c revision 1.6 1 /* $NetBSD: devopen.c,v 1.6 2014/01/11 08:08:23 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
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
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 = 0, part = 0;
127 int i;
128 char devname[MAXDEVNAME + 1];
129
130 /*
131 * parse path strings
132 */
133 /* find end of dev type name */
134 for (cp = str, i = 0; *cp != '\0' && *cp != '(' && i < MAXDEVNAME; i++)
135 devname[i] = *cp++;
136 if (*cp != '(') {
137 return (-1);
138 }
139 devname[i] = '\0';
140 /* compare dev type name */
141 for (dp = devsw; dp->dv_name; dp++)
142 if (!strcmp(devname, dp->dv_name))
143 break;
144 cp++;
145 if (dp->dv_name == NULL) {
146 return (-1);
147 }
148 dev = dp - devsw;
149 /* get mixed controller and unit number */
150 for (; *cp != ',' && *cp != ')'; cp++) {
151 if (*cp == '\0')
152 return -1;
153 if (*cp >= '0' && *cp <= '9')
154 unit = unit * 10 + *cp - '0';
155 }
156 if (unit < 0 || CTLR(unit) >= 2 || TARGET(unit) > 7) {
157 #ifdef DEBUG
158 printf("%s: invalid unit number (%d)\n", __func__, unit);
159 #endif
160 return (-1);
161 }
162 /* get optional partition number */
163 if (*cp == ',')
164 cp++;
165
166 for (; /* *cp != ',' && */ *cp != ')'; cp++) {
167 if (*cp == '\0')
168 return -1;
169 if (*cp >= '0' && *cp <= '9')
170 part = part * 10 + *cp - '0';
171 }
172 if (part < 0 || part >= MAXPARTITIONS) {
173 #ifdef DEBUG
174 printf("%s: invalid partition number (%d)\n", __func__, part);
175 #endif
176 return (-1);
177 }
178 /* check out end of dev spec */
179 *devp = dev;
180 *unitp = unit;
181 *partp = part;
182 if (fname != NULL) {
183 cp++;
184 if (*cp == '\0')
185 *fname = "netbsd";
186 else
187 *fname = __UNCONST(cp); /* XXX */
188 }
189 #ifdef DEBUG
190 printf("%s: dev = %d, unit = %d, part = %d, fname = %s\n",
191 __func__, dev, unit, part, fname != NULL ? *fname : "");
192 #endif
193
194 return 0;
195 }
196