1 /*
2 * The new sysinstall program.
3 *
4 * This is probably the last attempt in the `sysinstall' line, the next
5 * generation being slated to essentially a complete rewrite.
6 *
7 * $FreeBSD: stable/9/usr.sbin/sysinstall/cdrom.c 215296 2010-11-14 13:25:01Z brucec $
8 *
9 * Copyright (c) 1995
10 * Jordan Hubbard. All rights reserved.
11 * Copyright (c) 1995
12 * Gary J Palmer. All rights reserved.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer,
19 * verbatim and that no modifications are made prior to this
20 * point in the file.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 *
25 * THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``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 JORDAN HUBBARD OR HIS PETS 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, LIFE 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 */
38
39 /* These routines deal with getting things off of CDROM media */
40
41 #include "sysinstall.h"
42 #include <sys/stat.h>
43 #include <sys/errno.h>
44 #include <sys/param.h>
45 #include <sys/wait.h>
46 #include <sys/cdio.h>
47 #include <unistd.h>
48 #include <grp.h>
49 #include <fcntl.h>
50 #include <libutil.h>
51
52 #define CD9660
53 #include <sys/mount.h>
54 #include <isofs/cd9660/cd9660_mount.h>
55 #undef CD9660
56
57 static Boolean cdromMounted;
58 static Boolean previouslyMounted; /* Was the disc already mounted? */
59 static char mountpoint[MAXPATHLEN] = "/dist";
60 int CDROMInitQuiet;
61
62 static void mediaEjectCDROM(Device *dev);
63
64 static properties
read_props(char * name)65 read_props(char *name)
66 {
67 int fd;
68 properties n;
69
70 fd = open(name, O_RDONLY);
71 if (fd == -1)
72 return NULL;
73 n = properties_read(fd);
74 close(fd);
75 return n;
76 }
77
78 Boolean
mediaInitCDROM(Device * dev)79 mediaInitCDROM(Device *dev)
80 {
81 struct iso_args args;
82 properties cd_attr = NULL;
83 char *cp = NULL;
84 Boolean readInfo = TRUE;
85 static Boolean bogusCDOK = FALSE;
86 int err;
87
88 if (cdromMounted)
89 return TRUE;
90
91 Mkdir(mountpoint);
92 bzero(&args, sizeof(args));
93 args.fspec = dev->devname;
94 args.flags = 0;
95 err = mount("cd9660", mountpoint, MNT_RDONLY, (caddr_t) &args);
96 /* If disc inserted too recently first access generates EIO, try again */
97 if (err == -1 && errno == EIO)
98 err = mount("cd9660", mountpoint, MNT_RDONLY, (caddr_t) &args);
99 if (err == -1) {
100 if (errno == EINVAL) {
101 msgConfirm("The disc in your drive looks more like an Audio disc than a FreeBSD release.");
102 return FALSE;
103 }
104 if (errno == EBUSY) {
105 /* Perhaps the CDROM drive is already mounted as /cdrom */
106 if (file_readable("/cdrom/cdrom.inf")) {
107 previouslyMounted = TRUE;
108 strlcpy(mountpoint, "/cdrom", 7);
109 errno = 0;
110 }
111 }
112 if (errno) {
113 if (!CDROMInitQuiet)
114 msgConfirm("Error mounting %s on %s: %s (%u)", dev->devname,
115 mountpoint, strerror(errno), errno);
116 return FALSE;
117 }
118 }
119 cdromMounted = TRUE;
120
121 if (!file_readable(string_concat(mountpoint, "/cdrom.inf")) && !bogusCDOK) {
122 if (msgYesNo("Warning: The disc currently in the drive is either not a FreeBSD\n"
123 "disc or it is an older (pre 2.1.5) FreeBSD CD which does not\n"
124 "have a version number on it. Do you wish to use this disc anyway?") != 0) {
125 if (!previouslyMounted)
126 unmount(mountpoint, MNT_FORCE);
127 cdromMounted = FALSE;
128 return FALSE;
129 }
130 else {
131 readInfo = FALSE;
132 bogusCDOK = TRUE;
133 }
134 }
135
136 if (readInfo) {
137 if (!(cd_attr = read_props(string_concat(mountpoint, "/cdrom.inf")))
138 || !(cp = property_find(cd_attr, "CD_VERSION"))) {
139 msgConfirm("Unable to find a %s/cdrom.inf file.\n"
140 "Either this is not a FreeBSD disc, there is a problem with\n"
141 "the CDROM driver or something is wrong with your hardware.\n"
142 "Please fix this problem (check the console logs on VTY2) and\n"
143 "try again.", mountpoint);
144 }
145 else {
146 if (variable_cmp(VAR_RELNAME, cp) &&
147 variable_cmp(VAR_RELNAME, "any") &&
148 strcmp(cp, "any") &&
149 !bogusCDOK) {
150 msgConfirm("Warning: The version of the FreeBSD disc currently in the drive\n"
151 "(%s) does not match the version of the boot floppy\n"
152 "(%s).\n\n"
153 "If this is intentional, to avoid this message in the future\n"
154 "please visit the Options editor to set the boot floppy version\n"
155 "string to match that of the disc before selecting it as your\n"
156 "installation media.", cp, variable_get(VAR_RELNAME));
157
158 if (msgYesNo("Would you like to try and use this disc anyway?") != 0) {
159 if (!previouslyMounted)
160 unmount(mountpoint, MNT_FORCE);
161 cdromMounted = FALSE;
162 properties_free(cd_attr);
163 return FALSE;
164 }
165 else
166 bogusCDOK = TRUE;
167 }
168 if ((cp = property_find(cd_attr, "CD_MACHINE_ARCH")) != NULL) {
169 if (strcmp(cp, "any") &&
170 #if defined(PC98)
171 strcmp(cp, "pc98")) {
172 #elif defined(__sparc64__)
173 strcmp(cp, "sparc64")) {
174 #else
175 strcmp(cp, "x86")) {
176 #endif
177 msgConfirm("Fatal: The FreeBSD install CD/DVD currently in the drive\n"
178 "is for the %s architecture, not the machine you're using.\n\n"
179
180 "Please use the correct installation CD/DVD for your machine type.", cp);
181
182 if (!previouslyMounted)
183 unmount(mountpoint, MNT_FORCE);
184 cdromMounted = FALSE;
185 properties_free(cd_attr);
186 return FALSE;
187 }
188 }
189 if ((cp = property_find(cd_attr, "CD_VOLUME")) != NULL) {
190 dev->volume = atoi(cp);
191 /* XXX - Sanity check the volume here? */
192 msgDebug("CD Volume %d initialized!\n", dev->volume);
193 } else {
194 dev->volume = 0;
195 }
196 }
197 }
198 if (cd_attr)
199 properties_free(cd_attr);
200 return TRUE;
201 }
202
203 FILE *
204 mediaGetCDROM(Device *dev, char *file, Boolean probe)
205 {
206 return mediaGenericGet(mountpoint, file);
207 }
208
209 void
210 mediaShutdownCDROM(Device *dev)
211 {
212 if (!cdromMounted)
213 return;
214
215 if (previouslyMounted) {
216 cdromMounted = FALSE;
217 return;
218 }
219
220 if (unmount(mountpoint, MNT_FORCE) != 0)
221 msgConfirm("Could not unmount the CDROM/DVD from %s: %s", mountpoint, strerror(errno));
222 else
223 cdromMounted = FALSE;
224
225 mediaEjectCDROM(dev);
226 }
227
228 static void
229 mediaEjectCDROM(Device *dev)
230 {
231 int fd = -1;
232
233 msgDebug("Ejecting CDROM/DVD at %s", dev->devname);
234
235 fd = open(dev->devname, O_RDONLY);
236
237 if (fd < 0)
238 msgDebug("Could not eject the CDROM/DVD from %s: %s", dev->devname, strerror(errno));
239 else {
240 ioctl(fd, CDIOCALLOW);
241 ioctl(fd, CDIOCEJECT);
242 close(fd);
243 }
244 }
245