1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: head/sys/boot/i386/libi386/devicename.c 172940 2007-10-24 21:33:00Z jhb $");
| 28__FBSDID("$FreeBSD: head/sys/boot/i386/libi386/devicename.c 181282 2008-08-04 07:01:42Z cperciva $");
|
29
30#include <stand.h>
31#include <string.h>
32#include <sys/disklabel.h>
33#include "bootstrap.h"
34#include "libi386.h"
35
36static int i386_parsedev(struct i386_devdesc **dev, const char *devspec, const char **path);
37
38/*
39 * Point (dev) at an allocated device specifier for the device matching the
40 * path in (devspec). If it contains an explicit device specification,
41 * use that. If not, use the default device.
42 */
43int
44i386_getdev(void **vdev, const char *devspec, const char **path)
45{
46 struct i386_devdesc **dev = (struct i386_devdesc **)vdev;
47 int rv;
48
49 /*
50 * If it looks like this is just a path and no
51 * device, go with the current device.
52 */
53 if ((devspec == NULL) ||
54 (devspec[0] == '/') ||
55 (strchr(devspec, ':') == NULL)) {
56
57 if (((rv = i386_parsedev(dev, getenv("currdev"), NULL)) == 0) &&
58 (path != NULL))
59 *path = devspec;
60 return(rv);
61 }
62
63 /*
64 * Try to parse the device name off the beginning of the devspec
65 */
66 return(i386_parsedev(dev, devspec, path));
67}
68
69/*
70 * Point (dev) at an allocated device specifier matching the string version
71 * at the beginning of (devspec). Return a pointer to the remaining
72 * text in (path).
73 *
74 * In all cases, the beginning of (devspec) is compared to the names
75 * of known devices in the device switch, and then any following text
76 * is parsed according to the rules applied to the device type.
77 *
78 * For disk-type devices, the syntax is:
79 *
80 * disk<unit>[s<slice>][<partition>]:
81 *
82 */
83static int
84i386_parsedev(struct i386_devdesc **dev, const char *devspec, const char **path)
85{
86 struct i386_devdesc *idev;
87 struct devsw *dv;
88 int i, unit, slice, partition, err;
89 char *cp;
90 const char *np;
91
92 /* minimum length check */
93 if (strlen(devspec) < 2)
94 return(EINVAL);
95
96 /* look for a device that matches */
97 for (i = 0, dv = NULL; devsw[i] != NULL; i++) {
98 if (!strncmp(devspec, devsw[i]->dv_name, strlen(devsw[i]->dv_name))) {
99 dv = devsw[i];
100 break;
101 }
102 }
103 if (dv == NULL)
104 return(ENOENT);
105 idev = malloc(sizeof(struct i386_devdesc));
106 err = 0;
107 np = (devspec + strlen(dv->dv_name));
108
109 switch(dv->dv_type) {
110 case DEVT_NONE: /* XXX what to do here? Do we care? */
111 break;
112
113 case DEVT_DISK:
114 unit = -1;
115 slice = -1;
116 partition = -1;
117 if (*np && (*np != ':')) {
118 unit = strtol(np, &cp, 10); /* next comes the unit number */
119 if (cp == np) {
120 err = EUNIT;
121 goto fail;
122 }
123 if (*cp == 'p') { /* got a GPT partition */
124 np = cp + 1;
125 slice = strtol(np, &cp, 10);
126 if (cp == np) {
127 err = ESLICE;
128 goto fail;
129 }
130 if (*cp && (*cp != ':')) {
131 err = EINVAL;
132 goto fail;
133 }
134 partition = 0xff;
135 } else {
136 if (*cp == 's') { /* got a slice number */
137 np = cp + 1;
138 slice = strtol(np, &cp, 10);
139 if (cp == np) {
140 err = ESLICE;
141 goto fail;
142 }
143 }
144 if (*cp && (*cp != ':')) {
145 partition = *cp - 'a'; /* got a partition number */
146 if ((partition < 0) || (partition >= MAXPARTITIONS)) {
147 err = EPART;
148 goto fail;
149 }
150 cp++;
151 }
152 }
| 29
30#include <stand.h>
31#include <string.h>
32#include <sys/disklabel.h>
33#include "bootstrap.h"
34#include "libi386.h"
35
36static int i386_parsedev(struct i386_devdesc **dev, const char *devspec, const char **path);
37
38/*
39 * Point (dev) at an allocated device specifier for the device matching the
40 * path in (devspec). If it contains an explicit device specification,
41 * use that. If not, use the default device.
42 */
43int
44i386_getdev(void **vdev, const char *devspec, const char **path)
45{
46 struct i386_devdesc **dev = (struct i386_devdesc **)vdev;
47 int rv;
48
49 /*
50 * If it looks like this is just a path and no
51 * device, go with the current device.
52 */
53 if ((devspec == NULL) ||
54 (devspec[0] == '/') ||
55 (strchr(devspec, ':') == NULL)) {
56
57 if (((rv = i386_parsedev(dev, getenv("currdev"), NULL)) == 0) &&
58 (path != NULL))
59 *path = devspec;
60 return(rv);
61 }
62
63 /*
64 * Try to parse the device name off the beginning of the devspec
65 */
66 return(i386_parsedev(dev, devspec, path));
67}
68
69/*
70 * Point (dev) at an allocated device specifier matching the string version
71 * at the beginning of (devspec). Return a pointer to the remaining
72 * text in (path).
73 *
74 * In all cases, the beginning of (devspec) is compared to the names
75 * of known devices in the device switch, and then any following text
76 * is parsed according to the rules applied to the device type.
77 *
78 * For disk-type devices, the syntax is:
79 *
80 * disk<unit>[s<slice>][<partition>]:
81 *
82 */
83static int
84i386_parsedev(struct i386_devdesc **dev, const char *devspec, const char **path)
85{
86 struct i386_devdesc *idev;
87 struct devsw *dv;
88 int i, unit, slice, partition, err;
89 char *cp;
90 const char *np;
91
92 /* minimum length check */
93 if (strlen(devspec) < 2)
94 return(EINVAL);
95
96 /* look for a device that matches */
97 for (i = 0, dv = NULL; devsw[i] != NULL; i++) {
98 if (!strncmp(devspec, devsw[i]->dv_name, strlen(devsw[i]->dv_name))) {
99 dv = devsw[i];
100 break;
101 }
102 }
103 if (dv == NULL)
104 return(ENOENT);
105 idev = malloc(sizeof(struct i386_devdesc));
106 err = 0;
107 np = (devspec + strlen(dv->dv_name));
108
109 switch(dv->dv_type) {
110 case DEVT_NONE: /* XXX what to do here? Do we care? */
111 break;
112
113 case DEVT_DISK:
114 unit = -1;
115 slice = -1;
116 partition = -1;
117 if (*np && (*np != ':')) {
118 unit = strtol(np, &cp, 10); /* next comes the unit number */
119 if (cp == np) {
120 err = EUNIT;
121 goto fail;
122 }
123 if (*cp == 'p') { /* got a GPT partition */
124 np = cp + 1;
125 slice = strtol(np, &cp, 10);
126 if (cp == np) {
127 err = ESLICE;
128 goto fail;
129 }
130 if (*cp && (*cp != ':')) {
131 err = EINVAL;
132 goto fail;
133 }
134 partition = 0xff;
135 } else {
136 if (*cp == 's') { /* got a slice number */
137 np = cp + 1;
138 slice = strtol(np, &cp, 10);
139 if (cp == np) {
140 err = ESLICE;
141 goto fail;
142 }
143 }
144 if (*cp && (*cp != ':')) {
145 partition = *cp - 'a'; /* got a partition number */
146 if ((partition < 0) || (partition >= MAXPARTITIONS)) {
147 err = EPART;
148 goto fail;
149 }
150 cp++;
151 }
152 }
|
| 153 } else {
154 cp = np;
|
153 }
154 if (*cp && (*cp != ':')) {
155 err = EINVAL;
156 goto fail;
157 }
158
159 idev->d_unit = unit;
160 idev->d_kind.biosdisk.slice = slice;
161 idev->d_kind.biosdisk.partition = partition;
162 if (path != NULL)
163 *path = (*cp == 0) ? cp : cp + 1;
164 break;
165
166 case DEVT_CD:
167 case DEVT_NET:
168 unit = 0;
169
170 if (*np && (*np != ':')) {
171 unit = strtol(np, &cp, 0); /* get unit number if present */
172 if (cp == np) {
173 err = EUNIT;
174 goto fail;
175 }
| 155 }
156 if (*cp && (*cp != ':')) {
157 err = EINVAL;
158 goto fail;
159 }
160
161 idev->d_unit = unit;
162 idev->d_kind.biosdisk.slice = slice;
163 idev->d_kind.biosdisk.partition = partition;
164 if (path != NULL)
165 *path = (*cp == 0) ? cp : cp + 1;
166 break;
167
168 case DEVT_CD:
169 case DEVT_NET:
170 unit = 0;
171
172 if (*np && (*np != ':')) {
173 unit = strtol(np, &cp, 0); /* get unit number if present */
174 if (cp == np) {
175 err = EUNIT;
176 goto fail;
177 }
|
| 178 } else {
179 cp = np;
|
176 }
177 if (*cp && (*cp != ':')) {
178 err = EINVAL;
179 goto fail;
180 }
181
182 idev->d_unit = unit;
183 if (path != NULL)
184 *path = (*cp == 0) ? cp : cp + 1;
185 break;
186
187 default:
188 err = EINVAL;
189 goto fail;
190 }
191 idev->d_dev = dv;
192 idev->d_type = dv->dv_type;
193 if (dev == NULL) {
194 free(idev);
195 } else {
196 *dev = idev;
197 }
198 return(0);
199
200 fail:
201 free(idev);
202 return(err);
203}
204
205
206char *
207i386_fmtdev(void *vdev)
208{
209 struct i386_devdesc *dev = (struct i386_devdesc *)vdev;
210 static char buf[128]; /* XXX device length constant? */
211 char *cp;
212
213 switch(dev->d_type) {
214 case DEVT_NONE:
215 strcpy(buf, "(no device)");
216 break;
217
218 case DEVT_CD:
219 sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit);
220 break;
221
222 case DEVT_DISK:
223 cp = buf;
224 cp += sprintf(cp, "%s%d", dev->d_dev->dv_name, dev->d_unit);
225 if (dev->d_kind.biosdisk.partition == 0xff) {
226 cp += sprintf(cp, "p%d", dev->d_kind.biosdisk.slice);
227 } else {
228 if (dev->d_kind.biosdisk.slice > 0)
229 cp += sprintf(cp, "s%d", dev->d_kind.biosdisk.slice);
230 if (dev->d_kind.biosdisk.partition >= 0)
231 cp += sprintf(cp, "%c", dev->d_kind.biosdisk.partition + 'a');
232 }
233 strcat(cp, ":");
234 break;
235
236 case DEVT_NET:
237 sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit);
238 break;
239 }
240 return(buf);
241}
242
243
244/*
245 * Set currdev to suit the value being supplied in (value)
246 */
247int
248i386_setcurrdev(struct env_var *ev, int flags, const void *value)
249{
250 struct i386_devdesc *ncurr;
251 int rv;
252
253 if ((rv = i386_parsedev(&ncurr, value, NULL)) != 0)
254 return(rv);
255 free(ncurr);
256 env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);
257 return(0);
258}
| 180 }
181 if (*cp && (*cp != ':')) {
182 err = EINVAL;
183 goto fail;
184 }
185
186 idev->d_unit = unit;
187 if (path != NULL)
188 *path = (*cp == 0) ? cp : cp + 1;
189 break;
190
191 default:
192 err = EINVAL;
193 goto fail;
194 }
195 idev->d_dev = dv;
196 idev->d_type = dv->dv_type;
197 if (dev == NULL) {
198 free(idev);
199 } else {
200 *dev = idev;
201 }
202 return(0);
203
204 fail:
205 free(idev);
206 return(err);
207}
208
209
210char *
211i386_fmtdev(void *vdev)
212{
213 struct i386_devdesc *dev = (struct i386_devdesc *)vdev;
214 static char buf[128]; /* XXX device length constant? */
215 char *cp;
216
217 switch(dev->d_type) {
218 case DEVT_NONE:
219 strcpy(buf, "(no device)");
220 break;
221
222 case DEVT_CD:
223 sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit);
224 break;
225
226 case DEVT_DISK:
227 cp = buf;
228 cp += sprintf(cp, "%s%d", dev->d_dev->dv_name, dev->d_unit);
229 if (dev->d_kind.biosdisk.partition == 0xff) {
230 cp += sprintf(cp, "p%d", dev->d_kind.biosdisk.slice);
231 } else {
232 if (dev->d_kind.biosdisk.slice > 0)
233 cp += sprintf(cp, "s%d", dev->d_kind.biosdisk.slice);
234 if (dev->d_kind.biosdisk.partition >= 0)
235 cp += sprintf(cp, "%c", dev->d_kind.biosdisk.partition + 'a');
236 }
237 strcat(cp, ":");
238 break;
239
240 case DEVT_NET:
241 sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit);
242 break;
243 }
244 return(buf);
245}
246
247
248/*
249 * Set currdev to suit the value being supplied in (value)
250 */
251int
252i386_setcurrdev(struct env_var *ev, int flags, const void *value)
253{
254 struct i386_devdesc *ncurr;
255 int rv;
256
257 if ((rv = i386_parsedev(&ncurr, value, NULL)) != 0)
258 return(rv);
259 free(ncurr);
260 env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);
261 return(0);
262}
|