aboutsummaryrefslogtreecommitdiff
path: root/toolchain/uClibc/uClibc-0.9.28-host-ldconfig.patch
blob: f55c3498a7d3c9f94d177b466a02239e8319a1e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
This patch supports cross-development for embedded systems by allowing the
host version of ldconfig (ldconfig.host) to build ld.so.cache for the target.
Changes include:
 1) LDSO_CACHE_SUPPORT is defined for the host build.
 2) A little-endian host can create a big-endian ld.so.cache, and vice versa.
 3) Can use -r option without chroot(), so no need to run as superuser.

Dan Howell <dahowell@directv.com>

diff -urN uClibc-orig/utils/chroot_realpath.c uClibc-20050502/utils/chroot_realpath.c
--- uClibc-orig/utils/chroot_realpath.c	1969-12-31 16:00:00.000000000 -0800
+++ uClibc-20050502/utils/chroot_realpath.c	2005-09-12 18:30:29.000000000 -0700
@@ -0,0 +1,163 @@
+/*
+ * chroot_realpath.c -- reslove pathname as if inside chroot
+ * Based on realpath.c Copyright (C) 1993 Rick Sladkey <jrs@world.std.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Library Public License for more details.
+ *
+ * 2005/09/12: Dan Howell (modified from realpath.c to emulate chroot)
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <limits.h>				/* for PATH_MAX */
+#include <sys/param.h>			/* for MAXPATHLEN */
+#include <errno.h>
+#ifndef __set_errno
+#define __set_errno(val) ((errno) = (val))
+#endif
+
+#include <sys/stat.h>			/* for S_IFLNK */
+
+#ifndef PATH_MAX
+#define PATH_MAX _POSIX_PATH_MAX
+#endif
+
+#define MAX_READLINKS 32
+
+char *chroot_realpath(const char *chroot, const char *path, char resolved_path[])
+{
+	char copy_path[PATH_MAX];
+	char link_path[PATH_MAX];
+	char got_path[PATH_MAX];
+	char *got_path_root = got_path;
+	char *new_path = got_path;
+	char *max_path;
+	int readlinks = 0;
+	int n;
+	int chroot_len;
+
+	/* Trivial case. */
+	if (chroot == NULL || *chroot == '\0' ||
+	    (*chroot == '/' && chroot[1] == '\0')) {
+		strcpy(resolved_path, path);
+		return resolved_path;
+	}
+
+	chroot_len = strlen(chroot);
+
+	if (chroot_len + strlen(path) >= PATH_MAX - 3) {
+		__set_errno(ENAMETOOLONG);
+		return NULL;
+	}
+
+	/* Make a copy of the source path since we may need to modify it. */
+	strcpy(copy_path, path);
+	path = copy_path;
+	max_path = copy_path + PATH_MAX - chroot_len - 3;
+
+	/* Start with the chroot path. */
+	strcpy(new_path, chroot);
+	new_path += chroot_len;
+	while (*new_path == '/' && new_path > got_path)
+		new_path--;
+	got_path_root = new_path;
+	*new_path++ = '/';
+
+	/* Expand each slash-separated pathname component. */
+	while (*path != '\0') {
+		/* Ignore stray "/". */
+		if (*path == '/') {
+			path++;
+			continue;
+		}
+		if (*path == '.') {
+			/* Ignore ".". */
+			if (path[1] == '\0' || path[1] == '/') {
+				path++;
+				continue;
+			}
+			if (path[1] == '.') {
+				if (path[2] == '\0' || path[2] == '/') {
+					path += 2;
+					/* Ignore ".." at root. */
+					if (new_path == got_path_root + 1)
+						continue;
+					/* Handle ".." by backing up. */
+					while ((--new_path)[-1] != '/');
+					continue;
+				}
+			}
+		}
+		/* Safely copy the next pathname component. */
+		while (*path != '\0' && *path != '/') {
+			if (path > max_path) {
+				__set_errno(ENAMETOOLONG);
+				return NULL;
+			}
+			*new_path++ = *path++;
+		}
+		if (*path == '\0')
+			/* Don't follow symlink for last pathname component. */
+			break;
+#ifdef S_IFLNK
+		/* Protect against infinite loops. */
+		if (readlinks++ > MAX_READLINKS) {
+			__set_errno(ELOOP);
+			return NULL;
+		}
+		/* See if latest pathname component is a symlink. */
+		*new_path = '\0';
+		n = readlink(got_path, link_path, PATH_MAX - 1);
+		if (n < 0) {
+			/* EINVAL means the file exists but isn't a symlink. */
+			if (errno != EINVAL) {
+				/* Make sure it's null terminated. */
+				*new_path = '\0';
+				strcpy(resolved_path, got_path);
+				return NULL;
+			}
+		} else {
+			/* Note: readlink doesn't add the null byte. */
+			link_path[n] = '\0';
+			if (*link_path == '/')
+				/* Start over for an absolute symlink. */
+				new_path = got_path_root;
+			else
+				/* Otherwise back up over this component. */
+				while (*(--new_path) != '/');
+			/* Safe sex check. */
+			if (strlen(path) + n >= PATH_MAX - 2) {
+				__set_errno(ENAMETOOLONG);
+				return NULL;
+			}
+			/* Insert symlink contents into path. */
+			strcat(link_path, path);
+			strcpy(copy_path, link_path);
+			path = copy_path;
+		}
+#endif							/* S_IFLNK */
+		*new_path++ = '/';
+	}
+	/* Delete trailing slash but don't whomp a lone slash. */
+	if (new_path != got_path + 1 && new_path[-1] == '/')
+		new_path--;
+	/* Make sure it's null terminated. */
+	*new_path = '\0';
+	strcpy(resolved_path, got_path);
+	return resolved_path;
+}
diff -urN uClibc-orig/utils/ldconfig.c uClibc-20050502/utils/ldconfig.c
--- uClibc-orig/utils/ldconfig.c	2005-05-01 23:10:12.000000000 -0700
+++ uClibc-20050502/utils/ldconfig.c	2005-09-16 19:26:33.000000000 -0700
@@ -22,6 +22,8 @@
  *
  * This program may be used for any purpose as long as this
  * copyright notice is kept.
+ *
+ * 2005/09/16: Dan Howell (modified for cross-development)
  */
 
 #include <stdio.h>
@@ -37,6 +39,7 @@
 #include <errno.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
+#include "bswap.h"
 #include "dl-defs.h"
 
 #define BUFFER_SIZE 4096
@@ -56,6 +59,7 @@
 #if !defined (N_MAGIC)
 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
 #endif
+#define N_MAGIC_SWAP(exec) (bswap_32((exec).a_info) & 0xffff)
 /* Code indicating object file or impure executable.  */
 #define OMAGIC 0407
 /* Code indicating pure executable.  */
@@ -97,6 +101,8 @@
 char *conffile = LDSO_CONF;	/* default conf file */
 char *cachefile = LDSO_CACHE;	/* default cache file */
 #endif
+char *chroot_dir = NULL;
+int byteswap = 0;
 
 struct needed_tab
 {
@@ -117,6 +123,8 @@
   { NULL,           LIB_ELF }
 };
 
+extern char *chroot_realpath(const char *chroot, const char *path, char resolved_path[]);
+
 
 /* These two are used internally -- you shouldn't need to use them */
 static void verror_msg(const char *s, va_list p)
@@ -242,6 +250,8 @@
     ElfW(Ehdr) *elf_hdr;
     struct stat statbuf;
     char buff[BUFFER_SIZE];
+    char real[BUFFER_SIZE];
+    static int byteswapflag = -1;	/* start with byte-order unknown */
 
     /* see if name is of the form *.so* */
     if (name[strlen(name)-1] != '~' && (cp = strstr(name, ".so")))
@@ -256,8 +266,12 @@
 	sprintf(buff, "%s%s%s", dir, (*dir && strcmp(dir, "/")) ?
 		"/" : "", name);
 
+	/* get real path in case of chroot */
+	if (!chroot_realpath(chroot_dir, buff, real))
+	    warn("can't resolve %s in chroot %s", buff, chroot_dir);
+
 	/* first, make sure it's a regular file */
-	if (lstat(buff, &statbuf))
+	if (lstat(real, &statbuf))
 	    warn("skipping %s", buff);
 	else if (!S_ISREG(statbuf.st_mode) && !S_ISLNK(statbuf.st_mode))
 	    warnx("%s is not a regular file or symlink, skipping", buff);
@@ -267,14 +281,15 @@
 	    *islink = S_ISLNK(statbuf.st_mode);
 
 	    /* then try opening it */
-	    if (!(file = fopen(buff, "rb")))
+	    if (!(file = fopen(real, "rb")))
 		warn("skipping %s", buff);
 	    else
 	    {
 		/* now make sure it's a shared library */
 		if (fread(&exec, sizeof exec, 1, file) < 1)
 		    warnx("can't read header from %s, skipping", buff);
-		else if (N_MAGIC(exec) != ZMAGIC && N_MAGIC(exec) != QMAGIC)
+		else if (N_MAGIC(exec) != ZMAGIC && N_MAGIC(exec) != QMAGIC &&
+			 N_MAGIC_SWAP(exec) != ZMAGIC && N_MAGIC_SWAP(exec) != QMAGIC)
 		{
 		    elf_hdr = (ElfW(Ehdr) *) &exec;
 		    if (elf_hdr->e_ident[0] != 0x7f ||
@@ -294,6 +309,9 @@
 			*type = LIB_ELF;
 			good = readsoname(buff, file, expected_type, type, 
 				elf_hdr->e_ident[EI_CLASS]);
+			if (byteswapflag == -1)
+			    /* byte-order detected */
+			    byteswapflag = byteswap;
 			if (good == NULL || *islink)
 			{
 			    if (good != NULL)
@@ -313,6 +331,12 @@
 		}
 		else
 		{
+		    /* Determine byte-order */
+		    byteswap = (N_MAGIC(exec) == ZMAGIC || N_MAGIC(exec) == QMAGIC) ? 0 : 1;
+		    if (byteswapflag == -1)
+			/* byte-order detected */
+			byteswapflag = byteswap;
+
 		    if (*islink)
 			good = xstrdup(name);
 		    else
@@ -330,6 +354,14 @@
 		    *type = LIB_DLL;
 		}
 		fclose(file);
+
+		if (byteswapflag >= 0 && byteswap != byteswapflag)
+		{
+		    byteswapflag = -2;
+		    warnx("mixed byte-order detected, using host byte-order...");
+		}
+		if (byteswapflag == -2)
+		    byteswap = 0;
 	    }
 	}
     }
@@ -343,18 +375,24 @@
     int change = 1;
     char libname[BUFFER_SIZE];
     char linkname[BUFFER_SIZE];
+    char reallibname[BUFFER_SIZE];
+    char reallinkname[BUFFER_SIZE];
     struct stat libstat;
     struct stat linkstat;
 
     /* construct the full path names */
     sprintf(libname, "%s/%s", dir, file);
     sprintf(linkname, "%s/%s", dir, so);
+    if (!chroot_realpath(chroot_dir, libname, reallibname))
+	warn("can't resolve %s in chroot %s", libname, chroot_dir);
+    if (!chroot_realpath(chroot_dir, linkname, reallinkname))
+	warn("can't resolve %s in chroot %s", linkname, chroot_dir);
 
     /* see if a link already exists */
-    if (!stat(linkname, &linkstat))
+    if (!stat(reallinkname, &linkstat))
     {
 	/* now see if it's the one we want */
-	if (stat(libname, &libstat))
+	if (stat(reallibname, &libstat))
 	    warn("can't stat %s", libname);
 	else if (libstat.st_dev == linkstat.st_dev &&
 		libstat.st_ino == linkstat.st_ino)
@@ -364,14 +402,14 @@
     /* then update the link, if required */
     if (change > 0 && !nolinks)
     {
-	if (!lstat(linkname, &linkstat))
+	if (!lstat(reallinkname, &linkstat))
 	{
 	    if (!S_ISLNK(linkstat.st_mode))
 	    {
 		warnx("%s is not a symlink", linkname);
 		change = -1;
 	    }
-	    else if (remove(linkname))
+	    else if (remove(reallinkname))
 	    {
 		warn("can't unlink %s", linkname);
 		change = -1;
@@ -379,7 +417,7 @@
 	}
 	if (change > 0)
 	{
-	    if (symlink(file, linkname))
+	    if (symlink(file, reallinkname))
 	    {
 		warn("can't link %s to %s", linkname, file);
 		change = -1;
@@ -441,6 +479,7 @@
     char *so, *path, *path_n;
     struct lib *lp, *libs = NULL;
     int i, libtype, islink, expected_type = LIB_ANY;
+    char realname[BUFFER_SIZE];
 
     /* We need a writable copy of this string */
     path = strdup(rawname);
@@ -500,8 +539,12 @@
     if (verbose > 0)
 	printf("%s:\n", name);
 
+    /* get real path in case of chroot */
+    if (!chroot_realpath(chroot_dir, name, realname))
+	warn("can't resolve %s in chroot %s", name, chroot_dir);
+
     /* if we can't open it, we can't do anything */
-    if ((dir = opendir(name)) == NULL)
+    if ((dir = opendir(realname)) == NULL)
     {
 	warn("skipping %s", name);
 	free(path);
@@ -596,8 +639,12 @@
     char *res = NULL, *cp;
     FILE *file;
     struct stat stat;
+    char realconffile[BUFFER_SIZE];
+
+    if (!chroot_realpath(chroot_dir, conffile, realconffile))
+	return NULL;
 
-    if ((file = fopen(conffile, "r")) != NULL)
+    if ((file = fopen(realconffile, "r")) != NULL)
     {
 	fstat(fileno(file), &stat);
 	res = xmalloc(stat.st_size + 1);
@@ -678,22 +725,38 @@
 {
     int cachefd;
     int stroffset = 0;
+    char realcachefile[BUFFER_SIZE];
     char tempfile[BUFFER_SIZE];
+    header_t swap_magic;
+    header_t *magic_ptr;
+    libentry_t swap_lib;
+    libentry_t *lib_ptr;
     liblist_t *cur_lib;
 
     if (!magic.nlibs)
 	return;
 
-    sprintf(tempfile, "%s~", cachefile);
+    if (!chroot_realpath(chroot_dir, cachefile, realcachefile))
+	err(EXIT_FATAL,"can't resolve %s in chroot %s (%s)",
+	    cachefile, chroot_dir, strerror(errno));
+
+    sprintf(tempfile, "%s~", realcachefile);
 
     if (unlink(tempfile) && errno != ENOENT)
-	err(EXIT_FATAL,"can't unlink %s (%s)", tempfile, strerror(errno));
+	err(EXIT_FATAL,"can't unlink %s~ (%s)", cachefile, strerror(errno));
 
     if ((cachefd = creat(tempfile, 0644)) < 0)
-	err(EXIT_FATAL,"can't create %s (%s)", tempfile, strerror(errno));
+	err(EXIT_FATAL,"can't create %s~ (%s)", cachefile, strerror(errno));
 
-    if (write(cachefd, &magic, sizeof (header_t)) != sizeof (header_t))
-	err(EXIT_FATAL,"can't write %s (%s)", tempfile, strerror(errno));
+    if (byteswap) {
+	swap_magic = magic;
+	swap_magic.nlibs = bswap_32(swap_magic.nlibs);
+	magic_ptr = &swap_magic;
+    } else {
+	magic_ptr = &magic;
+    }
+    if (write(cachefd, magic_ptr, sizeof (header_t)) != sizeof (header_t))
+	err(EXIT_FATAL,"can't write %s~ (%s)", cachefile, strerror(errno));
 
     for (cur_lib = lib_head; cur_lib != NULL; cur_lib = cur_lib->next)
     {
@@ -701,29 +764,37 @@
 	stroffset += strlen(cur_lib->soname) + 1;
 	cur_lib->liboffset = stroffset;
 	stroffset += strlen(cur_lib->libname) + 1;
-	if (write(cachefd, cur_lib, sizeof (libentry_t)) !=
-		sizeof (libentry_t))
-	    err(EXIT_FATAL,"can't write %s (%s)", tempfile, strerror(errno));
+	if (byteswap) {
+	    swap_lib.flags = bswap_32(cur_lib->flags);
+	    swap_lib.sooffset = bswap_32(cur_lib->sooffset);
+	    swap_lib.liboffset = bswap_32(cur_lib->liboffset);
+	    lib_ptr = &swap_lib;
+	} else {
+	    lib_ptr = (libentry_t *)cur_lib;
+	}
+	if (write(cachefd, lib_ptr, sizeof (libentry_t)) !=
+	    sizeof (libentry_t))
+	err(EXIT_FATAL,"can't write %s~ (%s)", cachefile, strerror(errno));
     }
 
     for (cur_lib = lib_head; cur_lib != NULL; cur_lib = cur_lib->next)
     {
 	if (write(cachefd, cur_lib->soname, strlen(cur_lib->soname) + 1)
 		!= strlen(cur_lib->soname) + 1)
-	    err(EXIT_FATAL,"can't write %s (%s)", tempfile, strerror(errno));
+	    err(EXIT_FATAL,"can't write %s~ (%s)", cachefile, strerror(errno));
 	if (write(cachefd, cur_lib->libname, strlen(cur_lib->libname) + 1)
 		!= strlen(cur_lib->libname) + 1)
-	    err(EXIT_FATAL,"can't write %s (%s)", tempfile, strerror(errno));
+	    err(EXIT_FATAL,"can't write %s~ (%s)", cachefile, strerror(errno));
     }
 
     if (close(cachefd))
-	err(EXIT_FATAL,"can't close %s (%s)", tempfile, strerror(errno));
+	err(EXIT_FATAL,"can't close %s~ (%s)", cachefile, strerror(errno));
 
     if (chmod(tempfile, 0644))
-	err(EXIT_FATAL,"can't chmod %s (%s)", tempfile, strerror(errno));
+	err(EXIT_FATAL,"can't chmod %s~ (%s)", cachefile, strerror(errno));
 
-    if (rename(tempfile, cachefile))
-	err(EXIT_FATAL,"can't rename %s (%s)", tempfile, strerror(errno));
+    if (rename(tempfile, realcachefile))
+	err(EXIT_FATAL,"can't rename %s~ (%s)", cachefile, strerror(errno));
 }
 
 void cache_print(void)
@@ -734,8 +805,13 @@
     char *strs;
     header_t *header;
     libentry_t *libent;
+    char realcachefile[BUFFER_SIZE];
+
+    if (!chroot_realpath(chroot_dir, cachefile, realcachefile))
+	err(EXIT_FATAL,"can't resolve %s in chroot %s (%s)",
+	    cachefile, chroot_dir, strerror(errno));
 
-    if (stat(cachefile, &st) || (fd = open(cachefile, O_RDONLY))<0)
+    if (stat(realcachefile, &st) || (fd = open(realcachefile, O_RDONLY))<0)
 	err(EXIT_FATAL,"can't read %s (%s)", cachefile, strerror(errno));
     if ((c = mmap(0,st.st_size, PROT_READ, MAP_SHARED ,fd, 0)) == (caddr_t)-1)
 	err(EXIT_FATAL,"can't map %s (%s)", cachefile, strerror(errno));
@@ -828,7 +904,6 @@
     int nodefault = 0;
     char *cp, *dir, *so;
     int libtype, islink;
-    char *chroot_dir = NULL;
     int printcache = 0;
 #ifdef __LDSO_CACHE_SUPPORT__
     char *extpath;
@@ -891,10 +966,16 @@
 	}
 
     if (chroot_dir && *chroot_dir) {
-	if (chroot(chroot_dir) < 0)
-	    err(EXIT_FATAL,"couldn't chroot to %s (%s)", chroot_dir, strerror(errno));
-	if (chdir("/") < 0)
-	    err(EXIT_FATAL,"couldn't chdir to / (%s)", strerror(errno));
+	if (chroot(chroot_dir) < 0) {
+	    if (chdir(chroot_dir) < 0)
+		err(EXIT_FATAL,"couldn't chroot to %s (%s)", chroot_dir, strerror(errno));
+	}
+	else
+	{
+	    if (chdir("/") < 0)
+		err(EXIT_FATAL,"couldn't chdir to / (%s)", strerror(errno));
+	    chroot_dir = NULL;
+	}
     }
 
     /* allow me to introduce myself, hi, my name is ... */
diff -urN uClibc-orig/utils/Makefile uClibc-20050502/utils/Makefile
--- uClibc-orig/utils/Makefile	2005-05-01 23:10:12.000000000 -0700
+++ uClibc-20050502/utils/Makefile	2005-09-16 19:28:55.000000000 -0700
@@ -29,6 +29,12 @@
 TARGET_ICONV =
 endif
 
+ifeq ($(strip $(LDSO_CACHE_SUPPORT)),y)
+HOST_LDSO_CACHE_FLAG = -D__LDSO_CACHE_SUPPORT__=1
+else
+HOST_LDSO_CACHE_FLAG =
+endif
+
 # NOTE: We build the utils AFTER we have a uClibc-targeted toolchain.
 
 ifeq ($(strip $(HAVE_SHARED)),y)
@@ -51,7 +57,7 @@
 else
 LDCONFIG_CFLAGS := $(PIEFLAG) $(LDPIEFLAG)
 endif
-ldconfig: ldconfig.c
+ldconfig: ldconfig.c chroot_realpath.c
 	$(CC) $(CFLAGS) $(LDCONFIG_CFLAGS) \
 		-DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
 		-DUCLIBC_LDSO=$(UCLIBC_LDSO) -I. -I../ldso/include \
@@ -79,13 +85,13 @@
 
 ldd.host: ldd.c
 	$(HOSTCC) $(HOSTCFLAGS) -Wl,-s \
-		-DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
+ 		-DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" $(HOST_LDSO_CACHE_FLAG) \
 		-DUCLIBC_LDSO=$(UCLIBC_LDSO) -I. -I../ldso/include \
 		$^ -o $@
 
-ldconfig.host: ldconfig.c
+ldconfig.host: ldconfig.c chroot_realpath.c
 	$(HOSTCC) $(HOSTCFLAGS) -Wl,-s \
-		-DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
+ 		-DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" $(HOST_LDSO_CACHE_FLAG) \
 		-DUCLIBC_LDSO=$(UCLIBC_LDSO) -I. -I../ldso/include \
 		$^ -o $@
 
diff -urN uClibc-orig/utils/readsoname2.c uClibc-20050502/utils/readsoname2.c
--- uClibc-orig/utils/readsoname2.c	2005-05-01 23:10:12.000000000 -0700
+++ uClibc-20050502/utils/readsoname2.c	2005-09-16 17:48:59.000000000 -0700
@@ -26,7 +26,7 @@
 
   if (fstat(fileno(infile), &st))
     return NULL;
-  header = mmap(0, st.st_size, PROT_READ, MAP_SHARED, fileno(infile), 0);
+  header = mmap(0, st.st_size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fileno(infile), 0);
   if (header == (caddr_t)-1)
     return NULL;
 
@@ -34,6 +34,19 @@
   if ((char *)(epnt+1) > (char *)(header + st.st_size))
     goto skip;
 
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+  byteswap = (epnt->e_ident[5] == ELFDATA2MSB) ? 1 : 0;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+  byteswap = (epnt->e_ident[5] == ELFDATA2LSB) ? 1 : 0;
+#else
+#error Unknown host byte order!
+#endif
+  /* Be very lazy, and only byteswap the stuff we use */
+  if (byteswap==1) {
+    epnt->e_phoff=bswap_32(epnt->e_phoff);
+    epnt->e_phnum=bswap_16(epnt->e_phnum);
+  }
+
   ppnt = (ElfW(Phdr) *)&header[epnt->e_phoff];
   if ((char *)ppnt < (char *)header ||
       (char *)(ppnt+epnt->e_phnum) > (char *)(header + st.st_size))
@@ -41,6 +54,14 @@
 
   for(i = 0; i < epnt->e_phnum; i++)
   {
+    /* Be very lazy, and only byteswap the stuff we use */
+    if (byteswap==1) {
+      ppnt->p_type=bswap_32(ppnt->p_type);
+      ppnt->p_vaddr=bswap_32(ppnt->p_vaddr);
+      ppnt->p_offset=bswap_32(ppnt->p_offset);
+      ppnt->p_filesz=bswap_32(ppnt->p_filesz);
+    }
+
     if (loadaddr == -1 && ppnt->p_type == PT_LOAD) 
       loadaddr = (ppnt->p_vaddr & ~(page_size-1)) -
 	(ppnt->p_offset & ~(page_size-1));
@@ -58,11 +79,20 @@
       (char *)(dpnt+dynamic_size) > (char *)(header + st.st_size))
     goto skip;
   
+  if (byteswap==1) {
+    dpnt->d_tag=bswap_32(dpnt->d_tag);
+    dpnt->d_un.d_val=bswap_32(dpnt->d_un.d_val);
+  }
+
   while (dpnt->d_tag != DT_NULL)
   {
     if (dpnt->d_tag == DT_STRTAB)
       strtab_val = dpnt->d_un.d_val;
     dpnt++;
+    if (byteswap==1) {
+      dpnt->d_tag=bswap_32(dpnt->d_tag);
+      dpnt->d_un.d_val=bswap_32(dpnt->d_un.d_val);
+    }
   };
 
   if (!strtab_val)