1*fcf3ce44SJohn Forte /*
2*fcf3ce44SJohn Forte * CDDL HEADER START
3*fcf3ce44SJohn Forte *
4*fcf3ce44SJohn Forte * The contents of this file are subject to the terms of the
5*fcf3ce44SJohn Forte * Common Development and Distribution License (the "License").
6*fcf3ce44SJohn Forte * You may not use this file except in compliance with the License.
7*fcf3ce44SJohn Forte *
8*fcf3ce44SJohn Forte * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*fcf3ce44SJohn Forte * or http://www.opensolaris.org/os/licensing.
10*fcf3ce44SJohn Forte * See the License for the specific language governing permissions
11*fcf3ce44SJohn Forte * and limitations under the License.
12*fcf3ce44SJohn Forte *
13*fcf3ce44SJohn Forte * When distributing Covered Code, include this CDDL HEADER in each
14*fcf3ce44SJohn Forte * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*fcf3ce44SJohn Forte * If applicable, add the following below this CDDL HEADER, with the
16*fcf3ce44SJohn Forte * fields enclosed by brackets "[]" replaced with your own identifying
17*fcf3ce44SJohn Forte * information: Portions Copyright [yyyy] [name of copyright owner]
18*fcf3ce44SJohn Forte *
19*fcf3ce44SJohn Forte * CDDL HEADER END
20*fcf3ce44SJohn Forte */
21*fcf3ce44SJohn Forte /*
22*fcf3ce44SJohn Forte * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23*fcf3ce44SJohn Forte * Use is subject to license terms.
24*fcf3ce44SJohn Forte */
25*fcf3ce44SJohn Forte
26*fcf3ce44SJohn Forte /*
27*fcf3ce44SJohn Forte * I18N message number ranges
28*fcf3ce44SJohn Forte * This file: 6000 - 6499
29*fcf3ce44SJohn Forte * Shared common messages: 1 - 1999
30*fcf3ce44SJohn Forte */
31*fcf3ce44SJohn Forte
32*fcf3ce44SJohn Forte
33*fcf3ce44SJohn Forte
34*fcf3ce44SJohn Forte #include <stdio.h>
35*fcf3ce44SJohn Forte #include <unistd.h>
36*fcf3ce44SJohn Forte #include <stdlib.h>
37*fcf3ce44SJohn Forte #include <string.h>
38*fcf3ce44SJohn Forte #include <fcntl.h>
39*fcf3ce44SJohn Forte #include <errno.h>
40*fcf3ce44SJohn Forte #include <sys/param.h>
41*fcf3ce44SJohn Forte #include <sys/mnttab.h>
42*fcf3ce44SJohn Forte #include <sys/types.h>
43*fcf3ce44SJohn Forte #include <sys/stat.h>
44*fcf3ce44SJohn Forte #include <sys/openpromio.h>
45*fcf3ce44SJohn Forte
46*fcf3ce44SJohn Forte
47*fcf3ce44SJohn Forte /*
48*fcf3ce44SJohn Forte * For i18n
49*fcf3ce44SJohn Forte */
50*fcf3ce44SJohn Forte #include <stgcom.h>
51*fcf3ce44SJohn Forte
52*fcf3ce44SJohn Forte
53*fcf3ce44SJohn Forte /*
54*fcf3ce44SJohn Forte * 128 is the size of the largest (currently) property name
55*fcf3ce44SJohn Forte * 8192 - MAXPROPSIZE - sizeof (int) is the size of the largest
56*fcf3ce44SJohn Forte * (currently) property value, viz. nvramrc.
57*fcf3ce44SJohn Forte * the sizeof(uint_t) is from struct openpromio
58*fcf3ce44SJohn Forte */
59*fcf3ce44SJohn Forte #define MAXPROPSIZE 128
60*fcf3ce44SJohn Forte #define MAXVALSIZE (8192 - MAXPROPSIZE - sizeof (uint_t))
61*fcf3ce44SJohn Forte
62*fcf3ce44SJohn Forte #define BOOTDEV_PROP_NAME "boot-device"
63*fcf3ce44SJohn Forte
64*fcf3ce44SJohn Forte static int getbootdevname(char *, char *);
65*fcf3ce44SJohn Forte static int setprom(unsigned, unsigned, char *);
66*fcf3ce44SJohn Forte extern int devfs_dev_to_prom_name(char *, char *);
67*fcf3ce44SJohn Forte
68*fcf3ce44SJohn Forte /*
69*fcf3ce44SJohn Forte * Call getbootdevname() to get the absolute pathname of boot device
70*fcf3ce44SJohn Forte * and call setprom() to set the boot-device variable.
71*fcf3ce44SJohn Forte */
72*fcf3ce44SJohn Forte int
setboot(unsigned int yes,unsigned int verbose,char * fname)73*fcf3ce44SJohn Forte setboot(unsigned int yes, unsigned int verbose, char *fname)
74*fcf3ce44SJohn Forte {
75*fcf3ce44SJohn Forte char bdev[MAXPATHLEN];
76*fcf3ce44SJohn Forte
77*fcf3ce44SJohn Forte if (!getbootdevname(fname, bdev)) {
78*fcf3ce44SJohn Forte (void) fprintf(stderr, MSGSTR(6000,
79*fcf3ce44SJohn Forte "Cannot determine device name for %s\n"),
80*fcf3ce44SJohn Forte fname);
81*fcf3ce44SJohn Forte return (errno);
82*fcf3ce44SJohn Forte }
83*fcf3ce44SJohn Forte
84*fcf3ce44SJohn Forte return (setprom(yes, verbose, bdev));
85*fcf3ce44SJohn Forte }
86*fcf3ce44SJohn Forte
87*fcf3ce44SJohn Forte /*
88*fcf3ce44SJohn Forte * Read the mnttab and resolve the special device of the fs we are
89*fcf3ce44SJohn Forte * interested in, into an absolute pathname
90*fcf3ce44SJohn Forte */
91*fcf3ce44SJohn Forte static int
getbootdevname(char * bootfs,char * bdev)92*fcf3ce44SJohn Forte getbootdevname(char *bootfs, char *bdev)
93*fcf3ce44SJohn Forte {
94*fcf3ce44SJohn Forte FILE *f;
95*fcf3ce44SJohn Forte char *fname;
96*fcf3ce44SJohn Forte char *devname;
97*fcf3ce44SJohn Forte struct mnttab m;
98*fcf3ce44SJohn Forte struct stat sbuf;
99*fcf3ce44SJohn Forte int mountpt = 0;
100*fcf3ce44SJohn Forte int found = 0;
101*fcf3ce44SJohn Forte
102*fcf3ce44SJohn Forte devname = bootfs;
103*fcf3ce44SJohn Forte
104*fcf3ce44SJohn Forte if (stat(bootfs, &sbuf) < 0) {
105*fcf3ce44SJohn Forte perror(MSGSTR(6001, "stat"));
106*fcf3ce44SJohn Forte return (0);
107*fcf3ce44SJohn Forte }
108*fcf3ce44SJohn Forte
109*fcf3ce44SJohn Forte switch (sbuf.st_mode & S_IFMT) {
110*fcf3ce44SJohn Forte case S_IFBLK:
111*fcf3ce44SJohn Forte break;
112*fcf3ce44SJohn Forte default:
113*fcf3ce44SJohn Forte mountpt = 1;
114*fcf3ce44SJohn Forte break;
115*fcf3ce44SJohn Forte }
116*fcf3ce44SJohn Forte
117*fcf3ce44SJohn Forte if (mountpt) {
118*fcf3ce44SJohn Forte fname = MNTTAB;
119*fcf3ce44SJohn Forte f = fopen(fname, "r");
120*fcf3ce44SJohn Forte if (f == NULL) {
121*fcf3ce44SJohn Forte perror(fname);
122*fcf3ce44SJohn Forte return (0);
123*fcf3ce44SJohn Forte }
124*fcf3ce44SJohn Forte
125*fcf3ce44SJohn Forte while (getmntent(f, &m) == 0) {
126*fcf3ce44SJohn Forte if (strcmp(m.mnt_mountp, bootfs))
127*fcf3ce44SJohn Forte continue;
128*fcf3ce44SJohn Forte else {
129*fcf3ce44SJohn Forte found = 1;
130*fcf3ce44SJohn Forte break;
131*fcf3ce44SJohn Forte }
132*fcf3ce44SJohn Forte }
133*fcf3ce44SJohn Forte
134*fcf3ce44SJohn Forte (void) fclose(f);
135*fcf3ce44SJohn Forte
136*fcf3ce44SJohn Forte if (!found) {
137*fcf3ce44SJohn Forte return (0);
138*fcf3ce44SJohn Forte }
139*fcf3ce44SJohn Forte devname = m.mnt_special;
140*fcf3ce44SJohn Forte }
141*fcf3ce44SJohn Forte
142*fcf3ce44SJohn Forte if (devfs_dev_to_prom_name(devname, bdev) != 0) {
143*fcf3ce44SJohn Forte perror(devname);
144*fcf3ce44SJohn Forte return (0);
145*fcf3ce44SJohn Forte }
146*fcf3ce44SJohn Forte
147*fcf3ce44SJohn Forte return (1);
148*fcf3ce44SJohn Forte }
149*fcf3ce44SJohn Forte
150*fcf3ce44SJohn Forte /*
151*fcf3ce44SJohn Forte * setprom() - use /dev/openprom to read the "boot_device" variable and set
152*fcf3ce44SJohn Forte * it to the new value.
153*fcf3ce44SJohn Forte */
154*fcf3ce44SJohn Forte static int
setprom(unsigned yes,unsigned verbose,char * bdev)155*fcf3ce44SJohn Forte setprom(unsigned yes, unsigned verbose, char *bdev)
156*fcf3ce44SJohn Forte {
157*fcf3ce44SJohn Forte struct openpromio *pio;
158*fcf3ce44SJohn Forte int fd;
159*fcf3ce44SJohn Forte char save_bootdev[MAXVALSIZE];
160*fcf3ce44SJohn Forte
161*fcf3ce44SJohn Forte if ((fd = open("/dev/openprom", O_RDWR)) < 0) {
162*fcf3ce44SJohn Forte perror(MSGSTR(6002, "Could not open openprom dev"));
163*fcf3ce44SJohn Forte return (errno);
164*fcf3ce44SJohn Forte }
165*fcf3ce44SJohn Forte
166*fcf3ce44SJohn Forte pio = (struct openpromio *)malloc(sizeof (struct openpromio) +
167*fcf3ce44SJohn Forte MAXVALSIZE + MAXPROPSIZE);
168*fcf3ce44SJohn Forte
169*fcf3ce44SJohn Forte if (pio == (struct openpromio *)NULL) {
170*fcf3ce44SJohn Forte perror(MSGSTR(6003, " Error: Unable to allocate memory."));
171*fcf3ce44SJohn Forte return (errno);
172*fcf3ce44SJohn Forte }
173*fcf3ce44SJohn Forte
174*fcf3ce44SJohn Forte pio->oprom_size = MAXVALSIZE;
175*fcf3ce44SJohn Forte (void) strcpy(pio->oprom_array, BOOTDEV_PROP_NAME);
176*fcf3ce44SJohn Forte
177*fcf3ce44SJohn Forte if (ioctl(fd, OPROMGETOPT, pio) < 0) {
178*fcf3ce44SJohn Forte perror(MSGSTR(6004, "openprom getopt ioctl"));
179*fcf3ce44SJohn Forte return (errno);
180*fcf3ce44SJohn Forte }
181*fcf3ce44SJohn Forte
182*fcf3ce44SJohn Forte /*
183*fcf3ce44SJohn Forte * save the existing boot-device, so we can use it if setting
184*fcf3ce44SJohn Forte * to new value fails.
185*fcf3ce44SJohn Forte */
186*fcf3ce44SJohn Forte (void) strcpy(save_bootdev, pio->oprom_array);
187*fcf3ce44SJohn Forte
188*fcf3ce44SJohn Forte if (verbose) {
189*fcf3ce44SJohn Forte (void) fprintf(stdout,
190*fcf3ce44SJohn Forte MSGSTR(6005,
191*fcf3ce44SJohn Forte "Current boot-device = %s\n"), pio->oprom_array);
192*fcf3ce44SJohn Forte (void) fprintf(stdout, MSGSTR(6006,
193*fcf3ce44SJohn Forte "New boot-device = %s\n"), bdev);
194*fcf3ce44SJohn Forte }
195*fcf3ce44SJohn Forte
196*fcf3ce44SJohn Forte if (!yes) {
197*fcf3ce44SJohn Forte (void) fprintf(stdout, MSGSTR(6007,
198*fcf3ce44SJohn Forte "Do you want to change boot-device "
199*fcf3ce44SJohn Forte "to the new setting? (y/n) "));
200*fcf3ce44SJohn Forte switch (getchar()) {
201*fcf3ce44SJohn Forte case 'Y':
202*fcf3ce44SJohn Forte case 'y':
203*fcf3ce44SJohn Forte break;
204*fcf3ce44SJohn Forte default:
205*fcf3ce44SJohn Forte return (0);
206*fcf3ce44SJohn Forte }
207*fcf3ce44SJohn Forte }
208*fcf3ce44SJohn Forte
209*fcf3ce44SJohn Forte /* set the new value for boot-device */
210*fcf3ce44SJohn Forte
211*fcf3ce44SJohn Forte pio->oprom_size = (int)strlen(BOOTDEV_PROP_NAME) + 1 +
212*fcf3ce44SJohn Forte (int)strlen(bdev);
213*fcf3ce44SJohn Forte
214*fcf3ce44SJohn Forte (void) strcpy(pio->oprom_array, BOOTDEV_PROP_NAME);
215*fcf3ce44SJohn Forte (void) strcpy(pio->oprom_array + (int)strlen(BOOTDEV_PROP_NAME) + 1,
216*fcf3ce44SJohn Forte bdev);
217*fcf3ce44SJohn Forte
218*fcf3ce44SJohn Forte if (ioctl(fd, OPROMSETOPT, pio) < 0) {
219*fcf3ce44SJohn Forte perror(MSGSTR(6008, "openprom setopt ioctl"));
220*fcf3ce44SJohn Forte return (errno);
221*fcf3ce44SJohn Forte }
222*fcf3ce44SJohn Forte
223*fcf3ce44SJohn Forte /* read back the value that was set */
224*fcf3ce44SJohn Forte
225*fcf3ce44SJohn Forte pio->oprom_size = MAXVALSIZE;
226*fcf3ce44SJohn Forte (void) strcpy(pio->oprom_array, BOOTDEV_PROP_NAME);
227*fcf3ce44SJohn Forte
228*fcf3ce44SJohn Forte if (ioctl(fd, OPROMGETOPT, pio) < 0) {
229*fcf3ce44SJohn Forte perror(MSGSTR(6009, "openprom getopt ioctl"));
230*fcf3ce44SJohn Forte return (errno);
231*fcf3ce44SJohn Forte }
232*fcf3ce44SJohn Forte
233*fcf3ce44SJohn Forte if (strcmp(bdev, pio->oprom_array)) {
234*fcf3ce44SJohn Forte
235*fcf3ce44SJohn Forte /* could not set the new device name, set the old one back */
236*fcf3ce44SJohn Forte
237*fcf3ce44SJohn Forte perror(MSGSTR(6010,
238*fcf3ce44SJohn Forte "Could not set boot-device, reverting to old value"));
239*fcf3ce44SJohn Forte pio->oprom_size = (int)strlen(BOOTDEV_PROP_NAME) + 1 +
240*fcf3ce44SJohn Forte (int)strlen(save_bootdev);
241*fcf3ce44SJohn Forte
242*fcf3ce44SJohn Forte (void) strcpy(pio->oprom_array, BOOTDEV_PROP_NAME);
243*fcf3ce44SJohn Forte (void) strcpy(pio->oprom_array +
244*fcf3ce44SJohn Forte (int)strlen(BOOTDEV_PROP_NAME) + 1,
245*fcf3ce44SJohn Forte save_bootdev);
246*fcf3ce44SJohn Forte
247*fcf3ce44SJohn Forte if (ioctl(fd, OPROMSETOPT, pio) < 0) {
248*fcf3ce44SJohn Forte perror(MSGSTR(6011, "openprom setopt ioctl"));
249*fcf3ce44SJohn Forte return (errno);
250*fcf3ce44SJohn Forte }
251*fcf3ce44SJohn Forte
252*fcf3ce44SJohn Forte }
253*fcf3ce44SJohn Forte
254*fcf3ce44SJohn Forte (void) close(fd);
255*fcf3ce44SJohn Forte
256*fcf3ce44SJohn Forte return (0);
257*fcf3ce44SJohn Forte }
258