1 /** $MirOS: src/sys/arch/sparc/stand/installboot/installboot.c,v 1.6 2007/10/16 20:29:33 tg Exp $ */
2 /* $OpenBSD: installboot.c,v 1.4 2003/08/25 23:36:46 tedu Exp $ */
3 /* $NetBSD: installboot.c,v 1.1 1997/06/01 03:39:45 mrg Exp $ */
4
5 /*
6 * Copyright (c) 1994 Paul Kranenburg
7 * All rights reserved.
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 Paul Kranenburg.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <sys/param.h>
36 #include <sys/mount.h>
37 #include <sys/time.h>
38 #include <sys/stat.h>
39 #include <sys/sysctl.h>
40 #include <ufs/ufs/dinode.h>
41 #include <ufs/ufs/dir.h>
42 #include <ufs/ffs/fs.h>
43 #include <err.h>
44 #include <a.out.h>
45 #include <fcntl.h>
46 #include <nlist.h>
47 #include <stdlib.h>
48 #include <stdio.h>
49 #include <string.h>
50 #include <unistd.h>
51
52 __RCSID("$MirOS: src/sys/arch/sparc/stand/installboot/installboot.c,v 1.6 2007/10/16 20:29:33 tg Exp $");
53
54 extern const char *__progname;
55
56 int verbose, nowrite, hflag;
57 char *boot, *proto, *dev;
58
59 struct nlist nl[] = {
60 #define X_BLOCKTABLE 0
61 {{"_block_table"}},
62 #define X_BLOCKCOUNT 1
63 {{"_block_count"}},
64 #define X_BLOCKSIZE 2
65 {{"_block_size"}},
66 {{NULL}}
67 };
68 int32_t *block_table; /* block number array in prototype image */
69 int32_t *block_count_p; /* size of this array */
70 int32_t *block_size_p; /* filesystem block size */
71 int32_t max_block_count;
72
73 char *karch;
74 char cpumodel[130];
75
76 int isofsblk = 0;
77 int isofseblk = 0;
78
79 char *loadprotoblocks(char *, long *);
80 int loadblocknums(char *, int);
81 static void devread(int, void *, daddr_t, size_t, char *);
82 __dead static void usage(void);
83 int main(int, char *[]);
84
85 static void
usage()86 usage()
87 {
88 fprintf(stderr,
89 "usage:\t%s [-nvh] [-a <karch>] <boot> <proto> <device>\n"
90 "\t%s [-nvh] [-a <karch>] -s isofsblk -e isofseblk\n"
91 "\t <boot (ignored, can be /dev/null)> <proto> <device>\n",
92 __progname, __progname);
93 exit(1);
94 }
95
96 int
main(argc,argv)97 main(argc, argv)
98 int argc;
99 char *argv[];
100 {
101 int c;
102 int devfd;
103 char *protostore;
104 long protosize;
105 int mib[2];
106 size_t size;
107
108 while ((c = getopt(argc, argv, "a:vnhs:e:")) != -1) {
109 switch (c) {
110 case 'a':
111 karch = optarg;
112 break;
113 case 'h': /* Note: for backwards compatibility */
114 /* Don't strip a.out header */
115 hflag = 1;
116 break;
117 case 'n':
118 /* Do not actually write the bootblock to disk */
119 nowrite = 1;
120 break;
121 case 'v':
122 /* Chat */
123 verbose = 1;
124 break;
125 case 's':
126 isofsblk = atoi(optarg);
127 break;
128 case 'e':
129 isofseblk = atoi(optarg);
130 break;
131 default:
132 usage();
133 }
134 }
135
136 if (argc - optind < 3) {
137 usage();
138 }
139
140 boot = argv[optind];
141 proto = argv[optind + 1];
142 dev = argv[optind + 2];
143
144 if (karch == NULL) {
145 mib[0] = CTL_HW;
146 mib[1] = HW_MODEL;
147 size = sizeof(cpumodel);
148 if (sysctl(mib, 2, cpumodel, &size, NULL, 0) == -1)
149 err(1, "sysctl");
150
151 if (size < 5 || strncmp(cpumodel, "SUN-4", 5) != 0) /*XXX*/
152 /* Assume a sun4c/sun4m */
153 karch = "sun4c";
154 else
155 karch = "sun4";
156 }
157
158 if (verbose) {
159 printf("boot: %s\n", boot);
160 printf("proto: %s\n", proto);
161 printf("device: %s\n", dev);
162 printf("architecture: %s\n", karch);
163 }
164
165 if (strcmp(karch, "sun4") == 0) {
166 hflag = 0;
167 } else if (strcmp(karch, "sun4c") == 0) {
168 hflag = 1;
169 } else if (strcmp(karch, "sun4m") == 0) {
170 hflag = 1;
171 } else
172 errx(1, "Unsupported architecture");
173
174 /* Load proto blocks into core */
175 if ((protostore = loadprotoblocks(proto, &protosize)) == NULL)
176 exit(1);
177
178 /* Open and check raw disk device */
179 if ((devfd = open(dev, O_RDONLY, 0)) < 0)
180 err(1, "open: %s", dev);
181
182 /* Extract and load block numbers */
183 if (loadblocknums(boot, devfd) != 0)
184 exit(1);
185
186 (void)close(devfd);
187
188 if (nowrite)
189 return 0;
190
191 /* Write patched proto bootblocks into the superblock */
192 if (protosize > SBSIZE - DEV_BSIZE)
193 errx(1, "proto bootblocks too big");
194
195 if ((devfd = open(dev, O_RDWR, 0)) < 0)
196 err(1, "open: %s", dev);
197
198 if (lseek(devfd, DEV_BSIZE, SEEK_SET) != DEV_BSIZE)
199 err(1, "lseek bootstrap");
200
201 /* Sync filesystems (to clean in-memory superblock?) */
202 sync();
203
204 if (write(devfd, protostore, protosize) != protosize)
205 err(1, "write bootstrap");
206 (void)close(devfd);
207 return 0;
208 }
209
210 char *
loadprotoblocks(fname,size)211 loadprotoblocks(fname, size)
212 char *fname;
213 long *size;
214 {
215 int fd, sz;
216 char *bp;
217 struct stat statbuf;
218 struct exec *hp;
219 long off;
220
221 /* Locate block number array in proto file */
222 if (nlist(fname, nl) != 0) {
223 warnx("nlist: %s: symbols not found", fname);
224 return NULL;
225 }
226 if (nl[X_BLOCKTABLE].n_type != N_DATA + N_EXT) {
227 warnx("nlist: %s: wrong type (should be %04X, is %04X)",
228 nl[X_BLOCKTABLE].n_un.n_name, N_DATA + N_EXT,
229 nl[X_BLOCKTABLE].n_type);
230 return NULL;
231 }
232 if (nl[X_BLOCKCOUNT].n_type != N_DATA + N_EXT) {
233 warnx("nlist: %s: wrong type (should be %04X, is %04X)",
234 nl[X_BLOCKCOUNT].n_un.n_name, N_DATA + N_EXT,
235 nl[X_BLOCKCOUNT].n_type);
236 return NULL;
237 }
238 if (nl[X_BLOCKSIZE].n_type != N_DATA + N_EXT) {
239 warnx("nlist: %s: wrong type (should be %04X, is %04X)",
240 nl[X_BLOCKSIZE].n_un.n_name, N_DATA + N_EXT,
241 nl[X_BLOCKSIZE].n_type);
242 return NULL;
243 }
244
245 if ((fd = open(fname, O_RDONLY)) < 0) {
246 warn("open: %s", fname);
247 return NULL;
248 }
249 if (fstat(fd, &statbuf) != 0) {
250 warn("fstat: %s", fname);
251 close(fd);
252 return NULL;
253 }
254 if ((bp = calloc(roundup(statbuf.st_size, DEV_BSIZE), 1)) == NULL) {
255 warnx("malloc: %s: no memory", fname);
256 close(fd);
257 return NULL;
258 }
259 if (read(fd, bp, statbuf.st_size) != statbuf.st_size) {
260 warn("read: %s", fname);
261 free(bp);
262 close(fd);
263 return NULL;
264 }
265 close(fd);
266
267 hp = (struct exec *)bp;
268 sz = (hflag ? sizeof(*hp) : 0) + hp->a_text + hp->a_data;
269 sz = roundup(sz, DEV_BSIZE);
270
271 /* Calculate the symbols' location within the proto file */
272 off = N_DATOFF(*hp) - N_DATADDR(*hp) - (hp->a_entry - N_TXTADDR(*hp));
273 block_table = (daddr_t *) (bp + nl[X_BLOCKTABLE].n_value + off);
274 block_count_p = (int32_t *)(bp + nl[X_BLOCKCOUNT].n_value + off);
275 block_size_p = (int32_t *) (bp + nl[X_BLOCKSIZE].n_value + off);
276 if ((int)block_table & 3) {
277 warn("%s: invalid address: block_table = %p",
278 fname, block_table);
279 free(bp);
280 close(fd);
281 return NULL;
282 }
283 if ((int)block_count_p & 3) {
284 warn("%s: invalid address: block_count_p = %p",
285 fname, block_count_p);
286 free(bp);
287 close(fd);
288 return NULL;
289 }
290 if ((int)block_size_p & 3) {
291 warn("%s: invalid address: block_size_p = %p",
292 fname, block_size_p);
293 free(bp);
294 close(fd);
295 return NULL;
296 }
297 max_block_count = *block_count_p;
298
299 if (verbose) {
300 printf("%s: entry point %#x\n", fname, hp->a_entry);
301 printf("%s: a.out header %s\n", fname,
302 hflag?"left on":"stripped off");
303 printf("proto bootblock size %ld\n", sz);
304 printf("room for %d filesystem blocks at %#x\n",
305 max_block_count, nl[X_BLOCKTABLE].n_value);
306 }
307
308 /*
309 * We convert the a.out header in-vitro into something that
310 * Sun PROMs understand.
311 * Old-style (sun4) ROMs do not expect a header at all, so
312 * we turn the first two words into code that gets us past
313 * the 32-byte header where the actual code begins. In assembly
314 * speak:
315 * .word MAGIC ! a NOP
316 * ba,a start !
317 * .skip 24 ! pad
318 * start:
319 */
320
321 #define SUN_MAGIC 0x01030107
322 #define SUN4_BASTART 0x30800007 /* i.e.: ba,a `start' */
323 *((int *)bp) = SUN_MAGIC;
324 *((int *)bp + 1) = SUN4_BASTART;
325
326 *size = sz;
327 return (hflag ? bp : (bp + sizeof(struct exec)));
328 }
329
330 static void
devread(fd,buf,blk,size,msg)331 devread(fd, buf, blk, size, msg)
332 int fd;
333 void *buf;
334 daddr_t blk;
335 size_t size;
336 char *msg;
337 {
338 if (lseek(fd, dbtob(blk), SEEK_SET) != dbtob(blk))
339 err(1, "%s: devread: lseek", msg);
340
341 if (read(fd, buf, size) != size)
342 err(1, "%s: devread: read", msg);
343 }
344
345 static char sblock[SBSIZE];
346
347 int
loadblocknums(boot,devfd)348 loadblocknums(boot, devfd)
349 char *boot;
350 int devfd;
351 {
352 int i, fd;
353 struct stat statbuf;
354 struct statfs statfsbuf;
355 struct fs *fs;
356 char *buf;
357 daddr_t blk, *ap;
358 struct ufs1_dinode *ip;
359 int ndb;
360
361 if (isofsblk) {
362 *block_size_p = 512;
363 *block_count_p = (isofseblk - isofsblk + 1) * (2048/512);
364 if (*block_count_p > max_block_count)
365 errx(1, "CD9660: Too many blocks");
366 if (verbose)
367 printf("CD9660: %d block numbers: ", *block_count_p);
368 for (i = 0; i < *block_count_p; i++) {
369 blk = (isofsblk * (2048/512)) + i;
370 block_table[i] = blk;
371 if (verbose)
372 printf("%d ", blk);
373 }
374 if (verbose)
375 printf("\n");
376 return 0;
377 }
378
379 /*
380 * Open 2nd-level boot program and record the block numbers
381 * it occupies on the filesystem represented by `devfd'.
382 */
383 if ((fd = open(boot, O_RDONLY)) < 0)
384 err(1, "open: %s", boot);
385
386 if (fstatfs(fd, &statfsbuf) != 0)
387 err(1, "statfs: %s", boot);
388
389 if (strncmp(statfsbuf.f_fstypename, "ffs", MFSNAMELEN) &&
390 strncmp(statfsbuf.f_fstypename, "ufs", MFSNAMELEN)) {
391 errx(1, "%s: must be on an FFS filesystem", boot);
392 }
393
394 if (fsync(fd) != 0)
395 err(1, "fsync: %s", boot);
396
397 if (fstat(fd, &statbuf) != 0)
398 err(1, "fstat: %s", boot);
399
400 close(fd);
401
402 /* Read superblock */
403 devread(devfd, sblock, btodb(SBOFF), SBSIZE, "superblock");
404 fs = (struct fs *)sblock;
405
406 /* Read inode */
407 if ((buf = malloc(fs->fs_bsize)) == NULL)
408 errx(1, "No memory for filesystem block");
409
410 blk = fsbtodb(fs, ino_to_fsba(fs, statbuf.st_ino));
411 devread(devfd, buf, blk, fs->fs_bsize, "inode");
412 ip = (struct ufs1_dinode *)(buf) + ino_to_fsbo(fs, statbuf.st_ino);
413
414 /*
415 * Register filesystem block size.
416 */
417 *block_size_p = fs->fs_bsize;
418
419 /*
420 * Get the block numbers; we don't handle fragments
421 */
422 ndb = howmany(ip->di_size, fs->fs_bsize);
423 if (ndb > max_block_count)
424 errx(1, "%s: Too many blocks", boot);
425
426 /*
427 * Register block count.
428 */
429 *block_count_p = ndb;
430
431 if (verbose)
432 printf("%s: block numbers: ", boot);
433 ap = ip->di_db;
434 for (i = 0; i < NDADDR && *ap && ndb; i++, ap++, ndb--) {
435 blk = fsbtodb(fs, *ap);
436 block_table[i] = blk;
437 if (verbose)
438 printf("%d ", blk);
439 }
440 if (verbose)
441 printf("\n");
442
443 if (ndb == 0)
444 return 0;
445
446 /*
447 * Just one level of indirections; there isn't much room
448 * for more in the 1st-level bootblocks anyway.
449 */
450 if (verbose)
451 printf("%s: block numbers (indirect): ", boot);
452 blk = ip->di_ib[0];
453 devread(devfd, buf, blk, fs->fs_bsize, "indirect block");
454 ap = (daddr_t *)buf;
455 for (; i < NINDIR(fs) && *ap && ndb; i++, ap++, ndb--) {
456 blk = fsbtodb(fs, *ap);
457 block_table[i] = blk;
458 if (verbose)
459 printf("%d ", blk);
460 }
461 if (verbose)
462 printf("\n");
463
464 if (ndb)
465 errx(1, "%s: Too many blocks", boot);
466 return 0;
467 }
468