1 /*-
2 * Copyright (c) 2003 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
7 * and NAI Labs, the Security Research Division of Network Associates, Inc.
8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
9 * DARPA CHATS research program.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The names of the authors may not be used to endorse or promote
20 * products derived from this software without specific prior written
21 * permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <unistd.h>
39 #include <stdint.h>
40 #include <string.h>
41 #include <ctype.h>
42 #include <errno.h>
43 #include <paths.h>
44 #include <fcntl.h>
45 #include <err.h>
46 #include <bsdxml.h>
47 #include <sys/types.h>
48 #include <sys/stat.h>
49 #include <sys/queue.h>
50 #include <sys/sbuf.h>
51 #include <sys/mman.h>
52
53 struct sector {
54 LIST_ENTRY(sector) sectors;
55 off_t offset;
56 unsigned char *data;
57 };
58
59 struct simdisk_softc {
60 int sectorsize;
61 off_t mediasize;
62 off_t lastsector;
63 LIST_HEAD(,sector) sectors;
64 struct sbuf *sbuf;
65 struct sector *sp;
66 u_int fwsectors;
67 u_int fwheads;
68 u_int fwcylinders;
69 };
70
71 static void
g_simdisk_insertsector(struct simdisk_softc * sc,struct sector * dsp)72 g_simdisk_insertsector(struct simdisk_softc *sc, struct sector *dsp)
73 {
74 struct sector *dsp2, *dsp3;
75
76 if (sc->lastsector < dsp->offset)
77 sc->lastsector = dsp->offset;
78 if (LIST_EMPTY(&sc->sectors)) {
79 LIST_INSERT_HEAD(&sc->sectors, dsp, sectors);
80 return;
81 }
82 dsp3 = NULL;
83 LIST_FOREACH(dsp2, &sc->sectors, sectors) {
84 dsp3 = dsp2;
85 if (dsp2->offset > dsp->offset) {
86 LIST_INSERT_BEFORE(dsp2, dsp, sectors);
87 return;
88 }
89 }
90 LIST_INSERT_AFTER(dsp3, dsp, sectors);
91 }
92
93 static void
startElement(void * userData,const char * name,const char ** atts __unused)94 startElement(void *userData, const char *name, const char **atts __unused)
95 {
96 struct simdisk_softc *sc;
97
98 sc = userData;
99 if (!strcasecmp(name, "sector")) {
100 sc->sp = calloc(1, sizeof(*sc->sp) + sc->sectorsize);
101 sc->sp->data = (u_char *)(sc->sp + 1);
102 }
103 sbuf_clear(sc->sbuf);
104 }
105
106 static void
endElement(void * userData,const char * name)107 endElement(void *userData, const char *name)
108 {
109 struct simdisk_softc *sc;
110 char *p;
111 u_char *q;
112 int i, j;
113 off_t o;
114
115 sc = userData;
116
117 if (!strcasecmp(name, "comment")) {
118 sbuf_clear(sc->sbuf);
119 return;
120 }
121 sbuf_finish(sc->sbuf);
122 if (!strcasecmp(name, "sectorsize")) {
123 sc->sectorsize = strtoul(sbuf_data(sc->sbuf), &p, 0);
124 if (*p != '\0')
125 errx(1, "strtoul croaked on sectorsize");
126 } else if (!strcasecmp(name, "mediasize")) {
127 o = strtoull(sbuf_data(sc->sbuf), &p, 0);
128 if (*p != '\0')
129 errx(1, "strtoul croaked on mediasize");
130 if (o > 0)
131 sc->mediasize = o;
132 } else if (!strcasecmp(name, "fwsectors")) {
133 sc->fwsectors = strtoul(sbuf_data(sc->sbuf), &p, 0);
134 if (*p != '\0')
135 errx(1, "strtoul croaked on fwsectors");
136 } else if (!strcasecmp(name, "fwheads")) {
137 sc->fwheads = strtoul(sbuf_data(sc->sbuf), &p, 0);
138 if (*p != '\0')
139 errx(1, "strtoul croaked on fwheads");
140 } else if (!strcasecmp(name, "fwcylinders")) {
141 sc->fwcylinders = strtoul(sbuf_data(sc->sbuf), &p, 0);
142 if (*p != '\0')
143 errx(1, "strtoul croaked on fwcylinders");
144 } else if (!strcasecmp(name, "offset")) {
145 sc->sp->offset= strtoull(sbuf_data(sc->sbuf), &p, 0);
146 if (*p != '\0')
147 errx(1, "strtoul croaked on offset");
148 } else if (!strcasecmp(name, "fill")) {
149 j = strtoul(sbuf_data(sc->sbuf), NULL, 16);
150 memset(sc->sp->data, j, sc->sectorsize);
151 } else if (!strcasecmp(name, "hexdata")) {
152 q = sc->sp->data;
153 p = sbuf_data(sc->sbuf);
154 for (i = 0; i < sc->sectorsize; i++) {
155 if (!isxdigit(*p))
156 errx(1, "I croaked on hexdata %d:(%02x)", i, *p);
157 if (isdigit(*p))
158 j = (*p - '0') << 4;
159 else
160 j = (tolower(*p) - 'a' + 10) << 4;
161 p++;
162 if (!isxdigit(*p))
163 errx(1, "I croaked on hexdata %d:(%02x)", i, *p);
164 if (isdigit(*p))
165 j |= *p - '0';
166 else
167 j |= tolower(*p) - 'a' + 10;
168 p++;
169 *q++ = j;
170 }
171 } else if (!strcasecmp(name, "sector")) {
172 g_simdisk_insertsector(sc, sc->sp);
173 sc->sp = NULL;
174 } else if (!strcasecmp(name, "diskimage")) {
175 } else if (!strcasecmp(name, "FreeBSD")) {
176 } else {
177 printf("<%s>[[%s]]\n", name, sbuf_data(sc->sbuf));
178 }
179 sbuf_clear(sc->sbuf);
180 }
181
182 static void
characterData(void * userData,const XML_Char * s,int len)183 characterData(void *userData, const XML_Char *s, int len)
184 {
185 const char *b, *e;
186 struct simdisk_softc *sc;
187
188 sc = userData;
189 b = s;
190 e = s + len - 1;
191 while (isspace(*b) && b < e)
192 b++;
193 while (isspace(*e) && e > b)
194 e--;
195 if (e != b || !isspace(*b))
196 sbuf_bcat(sc->sbuf, b, e - b + 1);
197 }
198
199 static struct simdisk_softc *
g_simdisk_xml_load(const char * file)200 g_simdisk_xml_load(const char *file)
201 {
202 XML_Parser parser = XML_ParserCreate(NULL);
203 struct stat st;
204 char *p;
205 struct simdisk_softc *sc;
206 int fd, i;
207
208 sc = calloc(1, sizeof *sc);
209 sc->sbuf = sbuf_new_auto();
210 LIST_INIT(&sc->sectors);
211 XML_SetUserData(parser, sc);
212 XML_SetElementHandler(parser, startElement, endElement);
213 XML_SetCharacterDataHandler(parser, characterData);
214
215 fd = open(file, O_RDONLY);
216 if (fd < 0)
217 err(1, "%s", file);
218 fstat(fd, &st);
219 p = mmap(NULL, st.st_size, PROT_READ, MAP_NOCORE|MAP_PRIVATE, fd, 0);
220 i = XML_Parse(parser, p, st.st_size, 1);
221 if (i != 1)
222 errx(1, "XML_Parse complains: return %d", i);
223 munmap(p, st.st_size);
224 close(fd);
225 XML_ParserFree(parser);
226 return (sc);
227 }
228
229 int
main(int argc,char ** argv)230 main(int argc, char **argv)
231 {
232 struct simdisk_softc *sc;
233 char buf[BUFSIZ];
234 int error, fd;
235 struct sector *dsp;
236
237 if (argc != 3)
238 errx(1, "Usage: %s mddevice xmlfile", argv[0]);
239
240 sc = g_simdisk_xml_load(argv[2]);
241 if (sc->mediasize == 0)
242 sc->mediasize = sc->lastsector + sc->sectorsize * 10;
243 if (sc->sectorsize == 0)
244 sc->sectorsize = 512;
245 sprintf(buf, "mdconfig -a -t malloc -s %jd -S %d",
246 (intmax_t)sc->mediasize / sc->sectorsize, sc->sectorsize);
247 if (sc->fwsectors && sc->fwheads)
248 sprintf(buf + strlen(buf), " -x %d -y %d",
249 sc->fwsectors, sc->fwheads);
250 sprintf(buf + strlen(buf), " -u %s", argv[1]);
251 error = system(buf);
252 if (error)
253 return (error);
254 fd = open(argv[1], O_RDWR);
255 if (fd < 0 && errno == ENOENT) {
256 sprintf(buf, "%s%s", _PATH_DEV, argv[1]);
257 fd = open(buf, O_RDWR);
258 }
259 if (fd < 0)
260 err(1, "Could not open %s", argv[1]);
261 LIST_FOREACH(dsp, &sc->sectors, sectors) {
262 lseek(fd, dsp->offset, SEEK_SET);
263 error = write(fd, dsp->data, sc->sectorsize);
264 if (error != sc->sectorsize)
265 err(1, "write sectordata failed");
266 }
267 close(fd);
268 exit (0);
269 }
270