summaryrefslogtreecommitdiff
path: root/target/linux/generic-2.4/patches/001-squashfs.patch
blob: ae6420a3830dbca352dc7a1a08b5d7c74d7e49c1 (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
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
diff --new-file -urp linux-2.4.31/fs/Config.in linux-2.4.31-squashfs2.2/fs/Config.in
--- linux-2.4.31/fs/Config.in	2004-11-17 11:54:21.000000000 +0000
+++ linux-2.4.31-squashfs2.2/fs/Config.in	2005-07-04 02:28:51.000000000 +0100
@@ -51,6 +51,14 @@ if [ "$CONFIG_JFFS2_FS" = "y" -o "$CONFI
    int 'JFFS2 debugging verbosity (0 = quiet, 2 = noisy)' CONFIG_JFFS2_FS_DEBUG 0
 fi
 tristate 'Compressed ROM file system support' CONFIG_CRAMFS
+tristate 'Squashed file system support' CONFIG_SQUASHFS
+if [ "$CONFIG_SQUASHFS" = "y" -o "$CONFIG_SQUASHFS" = "m" ] ; then
+bool 'Additional options for memory constrained systems ' CONFIG_SQUASHFS_EMBEDDED
+fi
+if [ "$CONFIG_SQUASHFS_EMBEDDED" = "y" ] ; then
+int 'Number of fragments cached' CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE 3
+bool 'Use Vmalloc rather than Kmalloc'  CONFIG_SQUASHFS_VMALLOC
+fi
 bool 'Virtual memory file system support (former shm fs)' CONFIG_TMPFS
 define_bool CONFIG_RAMFS y
 
diff --new-file -urp linux-2.4.31/fs/Makefile linux-2.4.31-squashfs2.2/fs/Makefile
--- linux-2.4.31/fs/Makefile	2004-02-18 13:36:31.000000000 +0000
+++ linux-2.4.31-squashfs2.2/fs/Makefile	2005-07-04 02:28:51.000000000 +0100
@@ -65,6 +65,7 @@ subdir-$(CONFIG_REISERFS_FS)	+= reiserfs
 subdir-$(CONFIG_DEVPTS_FS)	+= devpts
 subdir-$(CONFIG_SUN_OPENPROMFS)	+= openpromfs
 subdir-$(CONFIG_BEFS_FS)	+= befs
+subdir-$(CONFIG_SQUASHFS)	+= squashfs
 subdir-$(CONFIG_JFS_FS)		+= jfs
 subdir-$(CONFIG_XFS_FS)		+= xfs
 
diff --new-file -urp linux-2.4.31/fs/squashfs/inode.c linux-2.4.31-squashfs2.2/fs/squashfs/inode.c
--- linux-2.4.31/fs/squashfs/inode.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.31-squashfs2.2/fs/squashfs/inode.c	2005-07-04 02:28:51.000000000 +0100
@@ -0,0 +1,1695 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * inode.c
+ */
+
+#define SQUASHFS_1_0_COMPATIBILITY
+
+#include <linux/types.h>
+#include <linux/squashfs_fs.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/locks.h>
+#include <linux/init.h>
+#include <linux/dcache.h>
+#include <asm/uaccess.h>
+#include <linux/wait.h>
+#include <asm/semaphore.h>
+#include <linux/zlib.h>
+#include <linux/blkdev.h>
+#include <linux/vmalloc.h>
+
+#ifdef SQUASHFS_TRACE
+#define TRACE(s, args...)				printk(KERN_NOTICE "SQUASHFS: "s, ## args)
+#else
+#define TRACE(s, args...)				{}
+#endif
+
+#define ERROR(s, args...)				printk(KERN_ERR "SQUASHFS error: "s, ## args)
+
+#define SERROR(s, args...)				if(!silent) printk(KERN_ERR "SQUASHFS error: "s, ## args)
+#define WARNING(s, args...)				printk(KERN_WARNING "SQUASHFS: "s, ## args)
+
+static struct super_block *squashfs_read_super(struct super_block *, void *, int);
+static void squashfs_put_super(struct super_block *);
+static int squashfs_statfs(struct super_block *, struct statfs *);
+static int squashfs_symlink_readpage(struct file *file, struct page *page);
+static int squashfs_readpage(struct file *file, struct page *page);
+static int squashfs_readpage4K(struct file *file, struct page *page);
+static int squashfs_readdir(struct file *, void *, filldir_t);
+static struct dentry *squashfs_lookup(struct inode *, struct dentry *);
+static unsigned int read_data(struct super_block *s, char *buffer,
+		unsigned int index, unsigned int length, unsigned int *next_index);
+static int squashfs_get_cached_block(struct super_block *s, char *buffer,
+		unsigned int block, unsigned int offset, int length,
+		unsigned int *next_block, unsigned int *next_offset);
+static struct inode *squashfs_iget(struct super_block *s, squashfs_inode inode);
+static unsigned int read_blocklist(struct inode *inode, int index, int readahead_blks,
+		char *block_list, unsigned short **block_p, unsigned int *bsize);
+static void squashfs_put_super(struct super_block *s);
+
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+static int squashfs_readpage_lessthan4K(struct file *file, struct page *page);
+static struct inode *squashfs_iget_1(struct super_block *s, squashfs_inode inode);
+static unsigned int read_blocklist_1(struct inode *inode, int index, int readahead_blks,
+		char *block_list, unsigned short **block_p, unsigned int *bsize);
+#endif
+
+DECLARE_MUTEX(read_data_mutex);
+
+static z_stream stream;
+
+static DECLARE_FSTYPE_DEV(squashfs_fs_type, "squashfs", squashfs_read_super);
+
+static unsigned char squashfs_filetype_table[] = {
+	DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK
+};
+
+static struct super_operations squashfs_ops = {
+	statfs: squashfs_statfs,
+	put_super: squashfs_put_super,
+};
+
+static struct address_space_operations squashfs_symlink_aops = {
+	readpage: squashfs_symlink_readpage
+};
+
+static struct address_space_operations squashfs_aops = {
+	readpage: squashfs_readpage
+};
+
+static struct address_space_operations squashfs_aops_4K = {
+	readpage: squashfs_readpage4K
+};
+
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+static struct address_space_operations squashfs_aops_lessthan4K = {
+	readpage: squashfs_readpage_lessthan4K
+};
+#endif
+
+static struct file_operations squashfs_dir_ops = {
+	read: generic_read_dir,
+	readdir: squashfs_readdir
+};
+
+static struct inode_operations squashfs_dir_inode_ops = {
+	lookup: squashfs_lookup
+};
+
+
+static struct buffer_head *get_block_length(struct super_block *s,
+				int *cur_index, int *offset, int *c_byte)
+{
+	squashfs_sb_info *msblk = &s->u.squashfs_sb;
+	unsigned short temp;
+	struct buffer_head *bh;
+
+	if (!(bh = sb_bread(s, *cur_index)))
+		goto out;
+
+	if (msblk->devblksize - *offset == 1) {
+		if (msblk->swap)
+			((unsigned char *) &temp)[1] = *((unsigned char *)
+				(bh->b_data + *offset));
+		else
+			((unsigned char *) &temp)[0] = *((unsigned char *)
+				(bh->b_data + *offset));
+		brelse(bh);
+		if (!(bh = sb_bread(s, ++(*cur_index))))
+			goto out;
+		if (msblk->swap)
+			((unsigned char *) &temp)[0] = *((unsigned char *)
+				bh->b_data); 
+		else
+			((unsigned char *) &temp)[1] = *((unsigned char *)
+				bh->b_data); 
+		*c_byte = temp;
+		*offset = 1;
+	} else {
+		if (msblk->swap) {
+			((unsigned char *) &temp)[1] = *((unsigned char *)
+				(bh->b_data + *offset));
+			((unsigned char *) &temp)[0] = *((unsigned char *)
+				(bh->b_data + *offset + 1)); 
+		} else {
+			((unsigned char *) &temp)[0] = *((unsigned char *)
+				(bh->b_data + *offset));
+			((unsigned char *) &temp)[1] = *((unsigned char *)
+				(bh->b_data + *offset + 1)); 
+		}
+		*c_byte = temp;
+		*offset += 2;
+	}
+
+	if (SQUASHFS_CHECK_DATA(msblk->sBlk.flags)) {
+		if (*offset == msblk->devblksize) {
+			brelse(bh);
+			if (!(bh = sb_bread(s, ++(*cur_index))))
+				goto out;
+			*offset = 0;
+		}
+		if (*((unsigned char *) (bh->b_data + *offset)) !=
+						SQUASHFS_MARKER_BYTE) {
+			ERROR("Metadata block marker corrupt @ %x\n",
+						*cur_index);
+			brelse(bh);
+			goto out;
+		}
+		(*offset)++;
+	}
+	return bh;
+
+out:
+	return NULL;
+}
+
+
+static unsigned int read_data(struct super_block *s, char *buffer,
+		unsigned int index, unsigned int length, unsigned int *next_index)
+{
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+	struct buffer_head *bh[((SQUASHFS_FILE_MAX_SIZE - 1) >> msBlk->devblksize_log2) + 2];
+	unsigned int offset = index & ((1 << msBlk->devblksize_log2) - 1);
+	unsigned int cur_index = index >> msBlk->devblksize_log2;
+	int bytes, avail_bytes, b = 0, k;
+	char *c_buffer;
+	unsigned int compressed;
+	unsigned int c_byte = length;
+
+	if(c_byte) {
+		bytes = msBlk->devblksize - offset;
+		compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte);
+		c_buffer = compressed ? msBlk->read_data : buffer;
+		c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte);
+
+		TRACE("Block @ 0x%x, %scompressed size %d\n", index, compressed ? "" : "un", (unsigned int) c_byte);
+
+		if(!(bh[0] = sb_getblk(s, cur_index)))
+			goto block_release;
+		for(b = 1; bytes < c_byte; b++) {
+			if(!(bh[b] = sb_getblk(s, ++cur_index)))
+				goto block_release;
+			bytes += msBlk->devblksize;
+		}
+		ll_rw_block(READ, b, bh);
+	} else {
+		if(!(bh[0] = get_block_length(s, &cur_index, &offset, &c_byte)))
+			goto read_failure;
+
+		bytes = msBlk->devblksize - offset;
+		compressed = SQUASHFS_COMPRESSED(c_byte);
+		c_buffer = compressed ? msBlk->read_data : buffer;
+		c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte);
+
+		TRACE("Block @ 0x%x, %scompressed size %d\n", index, compressed ? "" : "un", (unsigned int) c_byte);
+
+		for(b = 1; bytes < c_byte; b++) {
+			if(!(bh[b] = sb_getblk(s, ++cur_index)))
+				goto block_release;
+			bytes += msBlk->devblksize;
+		}
+		ll_rw_block(READ, b - 1, bh + 1);
+	}
+
+	if(compressed)
+		down(&read_data_mutex);
+
+	for(bytes = 0, k = 0; k < b; k++) {
+		avail_bytes = (c_byte - bytes) > (msBlk->devblksize - offset) ? msBlk->devblksize - offset : c_byte - bytes;
+		wait_on_buffer(bh[k]);
+		if (!buffer_uptodate(bh[k]))
+			goto block_release;
+		memcpy(c_buffer + bytes, bh[k]->b_data + offset, avail_bytes);
+		bytes += avail_bytes;
+		offset = 0;
+		brelse(bh[k]);
+	}
+
+	/*
+	 * uncompress block
+	 */
+	if(compressed) {
+		int zlib_err;
+
+		stream.next_in = c_buffer;
+		stream.avail_in = c_byte;
+		stream.next_out = buffer;
+		stream.avail_out = msBlk->read_size;
+		if(((zlib_err = zlib_inflateInit(&stream)) != Z_OK) ||
+				((zlib_err = zlib_inflate(&stream, Z_FINISH)) != Z_STREAM_END) ||
+				((zlib_err = zlib_inflateEnd(&stream)) != Z_OK)) {
+			ERROR("zlib_fs returned unexpected result 0x%x\n", zlib_err);
+			bytes = 0;
+		} else
+			bytes = stream.total_out;
+		up(&read_data_mutex);
+	}
+
+	if(next_index)
+		*next_index = index + c_byte + (length ? 0 : (SQUASHFS_CHECK_DATA(msBlk->sBlk.flags) ? 3 : 2));
+
+	return bytes;
+
+block_release:
+	while(--b >= 0) brelse(bh[b]);
+
+read_failure:
+	ERROR("sb_bread failed reading block 0x%x\n", cur_index);
+	return 0;
+}
+
+
+static int squashfs_get_cached_block(struct super_block *s, char *buffer,
+		unsigned int block, unsigned int offset, int length,
+		unsigned int *next_block, unsigned int *next_offset)
+{
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+	int n, i, bytes, return_length = length;
+	unsigned int next_index;
+
+	TRACE("Entered squashfs_get_cached_block [%x:%x]\n", block, offset);
+
+	for(;;) {
+		for(i = 0; i < SQUASHFS_CACHED_BLKS; i++) 
+			if(msBlk->block_cache[i].block == block)
+				break; 
+		
+		down(&msBlk->block_cache_mutex);
+		if(i == SQUASHFS_CACHED_BLKS) {
+			/* read inode header block */
+			for(i = msBlk->next_cache, n = SQUASHFS_CACHED_BLKS; n ; n --, i = (i + 1) % SQUASHFS_CACHED_BLKS)
+				if(msBlk->block_cache[i].block != SQUASHFS_USED_BLK)
+					break;
+			if(n == 0) {
+				up(&msBlk->block_cache_mutex);
+				sleep_on(&msBlk->waitq);
+				continue;
+			}
+			msBlk->next_cache = (i + 1) % SQUASHFS_CACHED_BLKS;
+
+			if(msBlk->block_cache[i].block == SQUASHFS_INVALID_BLK) {
+				if(!(msBlk->block_cache[i].data = (unsigned char *)
+							kmalloc(SQUASHFS_METADATA_SIZE, GFP_KERNEL))) {
+					ERROR("Failed to allocate cache block\n");
+					up(&msBlk->block_cache_mutex);
+					return 0;
+				}
+			}
+	
+			msBlk->block_cache[i].block = SQUASHFS_USED_BLK;
+			up(&msBlk->block_cache_mutex);
+			if(!(msBlk->block_cache[i].length = read_data(s, msBlk->block_cache[i].data, block, 0,
+							&next_index))) {
+				ERROR("Unable to read cache block [%x:%x]\n", block, offset);
+				return 0;
+			}
+			down(&msBlk->block_cache_mutex);
+			wake_up(&msBlk->waitq);
+			msBlk->block_cache[i].block = block;
+			msBlk->block_cache[i].next_index = next_index;
+			TRACE("Read cache block [%x:%x]\n", block, offset);
+		}
+
+		if(msBlk->block_cache[i].block != block) {
+			up(&msBlk->block_cache_mutex);
+			continue;
+		}
+
+		if((bytes = msBlk->block_cache[i].length - offset) >= length) {
+			if(buffer)
+				memcpy(buffer, msBlk->block_cache[i].data + offset, length);
+			if(msBlk->block_cache[i].length - offset == length) {
+				*next_block = msBlk->block_cache[i].next_index;
+				*next_offset = 0;
+			} else {
+				*next_block = block;
+				*next_offset = offset + length;
+			}
+	
+			up(&msBlk->block_cache_mutex);
+			return return_length;
+		} else {
+			if(buffer) {
+				memcpy(buffer, msBlk->block_cache[i].data + offset, bytes);
+				buffer += bytes;
+			}
+			block = msBlk->block_cache[i].next_index;
+			up(&msBlk->block_cache_mutex);
+			length -= bytes;
+			offset = 0;
+		}
+	}
+}
+
+
+static int get_fragment_location(struct super_block *s, unsigned int fragment, unsigned int *fragment_start_block, unsigned int *fragment_size)
+{
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+	unsigned int start_block = msBlk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)];
+	int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET(fragment);
+	squashfs_fragment_entry fragment_entry;
+
+	if(msBlk->swap) {
+		squashfs_fragment_entry sfragment_entry;
+
+		if(!squashfs_get_cached_block(s, (char *) &sfragment_entry, start_block, offset,
+					sizeof(sfragment_entry), &start_block, &offset))
+			return 0;
+		SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_entry, &sfragment_entry);
+	} else
+		if(!squashfs_get_cached_block(s, (char *) &fragment_entry, start_block, offset,
+					sizeof(fragment_entry), &start_block, &offset))
+			return 0;
+
+	*fragment_start_block = fragment_entry.start_block;
+	*fragment_size = fragment_entry.size;
+
+	return 1;
+}
+
+
+void release_cached_fragment(squashfs_sb_info *msBlk, struct squashfs_fragment_cache *fragment)
+{
+	down(&msBlk->fragment_mutex);
+	fragment->locked --;
+	wake_up(&msBlk->fragment_wait_queue);
+	up(&msBlk->fragment_mutex);
+}
+
+
+struct squashfs_fragment_cache *get_cached_fragment(struct super_block *s, unsigned int start_block, int length)
+{
+	int i, n;
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+
+	for(;;) {
+		down(&msBlk->fragment_mutex);
+		for(i = 0; i < SQUASHFS_CACHED_FRAGMENTS && msBlk->fragment[i].block != start_block; i++);
+		if(i == SQUASHFS_CACHED_FRAGMENTS) {
+			for(i = msBlk->next_fragment, n = SQUASHFS_CACHED_FRAGMENTS;
+				n && msBlk->fragment[i].locked; n--, i = (i + 1) % SQUASHFS_CACHED_FRAGMENTS);
+
+			if(n == 0) {
+				up(&msBlk->fragment_mutex);
+				sleep_on(&msBlk->fragment_wait_queue);
+				continue;
+			}
+			msBlk->next_fragment = (msBlk->next_fragment + 1) % SQUASHFS_CACHED_FRAGMENTS;
+			
+			if(msBlk->fragment[i].data == NULL)
+				if(!(msBlk->fragment[i].data = (unsigned char *)
+							SQUASHFS_ALLOC(SQUASHFS_FILE_MAX_SIZE))) {
+					ERROR("Failed to allocate fragment cache block\n");
+					up(&msBlk->fragment_mutex);
+					return NULL;
+				}
+
+			msBlk->fragment[i].block = SQUASHFS_INVALID_BLK;
+			msBlk->fragment[i].locked = 1;
+			up(&msBlk->fragment_mutex);
+			if(!(msBlk->fragment[i].length = read_data(s, msBlk->fragment[i].data, start_block, length,
+							NULL))) {
+				ERROR("Unable to read fragment cache block [%x]\n", start_block);
+				msBlk->fragment[i].locked = 0;
+				return NULL;
+			}
+			msBlk->fragment[i].block = start_block;
+			TRACE("New fragment %d, start block %d, locked %d\n", i, msBlk->fragment[i].block, msBlk->fragment[i].locked);
+			return &msBlk->fragment[i];
+		}
+
+		msBlk->fragment[i].locked ++;
+		up(&msBlk->fragment_mutex);
+		
+		TRACE("Got fragment %d, start block %d, locked %d\n", i, msBlk->fragment[i].block, msBlk->fragment[i].locked);
+		return &msBlk->fragment[i];
+	}
+}
+
+
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+static struct inode *squashfs_iget_1(struct super_block *s, squashfs_inode inode)
+{
+	struct inode *i = new_inode(s);
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	unsigned int block = SQUASHFS_INODE_BLK(inode) + sBlk->inode_table_start;
+	unsigned int offset = SQUASHFS_INODE_OFFSET(inode);
+	unsigned int next_block, next_offset;
+	squashfs_base_inode_header_1 inodeb;
+
+	TRACE("Entered squashfs_iget_1\n");
+
+	if(msBlk->swap) {
+		squashfs_base_inode_header_1 sinodeb;
+
+		if(!squashfs_get_cached_block(s, (char *) &sinodeb, block,  offset,
+					sizeof(sinodeb), &next_block, &next_offset))
+			goto failed_read;
+		SQUASHFS_SWAP_BASE_INODE_HEADER_1(&inodeb, &sinodeb, sizeof(sinodeb));
+	} else
+		if(!squashfs_get_cached_block(s, (char *) &inodeb, block,  offset,
+					sizeof(inodeb), &next_block, &next_offset))
+			goto failed_read;
+
+	i->i_nlink = 1;
+
+	i->i_mtime = sBlk->mkfs_time;
+	i->i_atime = sBlk->mkfs_time;
+	i->i_ctime = sBlk->mkfs_time;
+
+	if(inodeb.inode_type != SQUASHFS_IPC_TYPE)
+		i->i_uid = msBlk->uid[((inodeb.inode_type - 1) / SQUASHFS_TYPES) * 16 + inodeb.uid];
+	i->i_ino = SQUASHFS_MK_VFS_INODE(block - sBlk->inode_table_start, offset);
+
+	i->i_mode = inodeb.mode;
+
+	switch(inodeb.inode_type == SQUASHFS_IPC_TYPE ? SQUASHFS_IPC_TYPE : (inodeb.inode_type - 1) % SQUASHFS_TYPES + 1) {
+		case SQUASHFS_FILE_TYPE: {
+			squashfs_reg_inode_header_1 inodep;
+
+			if(msBlk->swap) {
+				squashfs_reg_inode_header_1 sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_REG_INODE_HEADER_1(&inodep, &sinodep);
+			} else
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = inodep.file_size;
+			i->i_fop = &generic_ro_fops;
+			if(sBlk->block_size > 4096)
+				i->i_data.a_ops = &squashfs_aops;
+			else if(sBlk->block_size == 4096)
+				i->i_data.a_ops = &squashfs_aops_4K;
+			else
+				i->i_data.a_ops = &squashfs_aops_lessthan4K;
+			i->i_mode |= S_IFREG;
+			i->i_mtime = inodep.mtime;
+			i->i_atime = inodep.mtime;
+			i->i_ctime = inodep.mtime;
+			i->i_blocks = ((i->i_size - 1) >> 9) + 1;
+			i->i_blksize = PAGE_CACHE_SIZE;
+			i->u.squashfs_i.u.s1.fragment_start_block = SQUASHFS_INVALID_BLK;
+			i->u.squashfs_i.u.s1.fragment_offset = 0;
+			i->u.squashfs_i.start_block = inodep.start_block;
+			i->u.squashfs_i.block_list_start = next_block;
+			i->u.squashfs_i.offset = next_offset;
+			TRACE("File inode %x:%x, start_block %x, block_list_start %x, offset %x\n",
+					SQUASHFS_INODE_BLK(inode), offset, inodep.start_block, next_block, next_offset);
+			break;
+		}
+		case SQUASHFS_DIR_TYPE: {
+			squashfs_dir_inode_header_1 inodep;
+
+			if(msBlk->swap) {
+				squashfs_dir_inode_header_1 sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_DIR_INODE_HEADER_1(&inodep, &sinodep);
+			} else
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = inodep.file_size;
+			i->i_op = &squashfs_dir_inode_ops;
+			i->i_fop = &squashfs_dir_ops;
+			i->i_mode |= S_IFDIR;
+			i->i_mtime = inodep.mtime;
+			i->i_atime = inodep.mtime;
+			i->i_ctime = inodep.mtime;
+			i->u.squashfs_i.start_block = inodep.start_block;
+			i->u.squashfs_i.offset = inodep.offset;
+			i->u.squashfs_i.u.s2.directory_index_count = 0;
+			TRACE("Directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset,
+					inodep.start_block, inodep.offset);
+			break;
+		}
+		case SQUASHFS_SYMLINK_TYPE: {
+			squashfs_symlink_inode_header_1 inodep;
+	
+			if(msBlk->swap) {
+				squashfs_symlink_inode_header_1 sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(&inodep, &sinodep);
+			} else
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = inodep.symlink_size;
+			i->i_op = &page_symlink_inode_operations;
+			i->i_data.a_ops = &squashfs_symlink_aops;
+			i->i_mode |= S_IFLNK;
+			i->u.squashfs_i.start_block = next_block;
+			i->u.squashfs_i.offset = next_offset;
+			TRACE("Symbolic link inode %x:%x, start_block %x, offset %x\n",
+				SQUASHFS_INODE_BLK(inode), offset, next_block, next_offset);
+			break;
+		 }
+		 case SQUASHFS_BLKDEV_TYPE:
+		 case SQUASHFS_CHRDEV_TYPE: {
+			squashfs_dev_inode_header_1 inodep;
+
+			if(msBlk->swap) {
+				squashfs_dev_inode_header_1 sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_DEV_INODE_HEADER_1(&inodep, &sinodep);
+			} else	
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = 0;
+			i->i_mode |= (inodeb.inode_type == SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : S_IFBLK;
+			init_special_inode(i, i->i_mode, inodep.rdev);
+			TRACE("Device inode %x:%x, rdev %x\n", SQUASHFS_INODE_BLK(inode), offset, inodep.rdev);
+			break;
+		 }
+		 case SQUASHFS_IPC_TYPE: {
+			squashfs_ipc_inode_header_1 inodep;
+
+			if(msBlk->swap) {
+				squashfs_ipc_inode_header_1 sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_IPC_INODE_HEADER_1(&inodep, &sinodep);
+			} else	
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = 0;
+			i->i_mode |= (inodep.type == SQUASHFS_FIFO_TYPE) ? S_IFIFO : S_IFSOCK;
+			i->i_uid = msBlk->uid[inodep.offset * 16 + inodeb.uid];
+			init_special_inode(i, i->i_mode, 0);
+			break;
+		 }
+		 default:
+			ERROR("Unknown inode type %d in squashfs_iget!\n", inodeb.inode_type);
+				goto failed_read1;
+	}
+	
+	if(inodeb.guid == 15)
+		i->i_gid = i->i_uid;
+	else
+		i->i_gid = msBlk->guid[inodeb.guid];
+
+	insert_inode_hash(i);
+	return i;
+
+failed_read:
+	ERROR("Unable to read inode [%x:%x]\n", block, offset);
+
+failed_read1:
+	return NULL;
+}
+#endif
+
+
+static struct inode *squashfs_iget(struct super_block *s, squashfs_inode inode)
+{
+	struct inode *i = new_inode(s);
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	unsigned int block = SQUASHFS_INODE_BLK(inode) + sBlk->inode_table_start;
+	unsigned int offset = SQUASHFS_INODE_OFFSET(inode);
+	unsigned int next_block, next_offset;
+	squashfs_base_inode_header inodeb;
+
+	TRACE("Entered squashfs_iget\n");
+
+	if(msBlk->swap) {
+		squashfs_base_inode_header sinodeb;
+
+		if(!squashfs_get_cached_block(s, (char *) &sinodeb, block,  offset,
+					sizeof(sinodeb), &next_block, &next_offset))
+			goto failed_read;
+		SQUASHFS_SWAP_BASE_INODE_HEADER(&inodeb, &sinodeb, sizeof(sinodeb));
+	} else
+		if(!squashfs_get_cached_block(s, (char *) &inodeb, block,  offset,
+					sizeof(inodeb), &next_block, &next_offset))
+			goto failed_read;
+
+	i->i_nlink = 1;
+
+	i->i_mtime = sBlk->mkfs_time;
+	i->i_atime = sBlk->mkfs_time;
+	i->i_ctime = sBlk->mkfs_time;
+
+	i->i_uid = msBlk->uid[inodeb.uid];
+	i->i_ino = SQUASHFS_MK_VFS_INODE(block - sBlk->inode_table_start, offset);
+
+	i->i_mode = inodeb.mode;
+
+	switch(inodeb.inode_type) {
+		case SQUASHFS_FILE_TYPE: {
+			squashfs_reg_inode_header inodep;
+
+			if(msBlk->swap) {
+				squashfs_reg_inode_header sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_REG_INODE_HEADER(&inodep, &sinodep);
+			} else
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->u.squashfs_i.u.s1.fragment_start_block = SQUASHFS_INVALID_BLK;
+			if(inodep.fragment != SQUASHFS_INVALID_BLK && !get_fragment_location(s, inodep.fragment,
+							&i->u.squashfs_i.u.s1.fragment_start_block, &i->u.squashfs_i.u.s1.fragment_size))
+				goto failed_read;
+
+			i->u.squashfs_i.u.s1.fragment_offset = inodep.offset;
+			i->i_size = inodep.file_size;
+			i->i_fop = &generic_ro_fops;
+			if(sBlk->block_size > 4096)
+				i->i_data.a_ops = &squashfs_aops;
+			else
+				i->i_data.a_ops = &squashfs_aops_4K;
+			i->i_mode |= S_IFREG;
+			i->i_mtime = inodep.mtime;
+			i->i_atime = inodep.mtime;
+			i->i_ctime = inodep.mtime;
+			i->i_blocks = ((i->i_size - 1) >> 9) + 1;
+			i->i_blksize = PAGE_CACHE_SIZE;
+			i->u.squashfs_i.start_block = inodep.start_block;
+			i->u.squashfs_i.block_list_start = next_block;
+			i->u.squashfs_i.offset = next_offset;
+			TRACE("File inode %x:%x, start_block %x, block_list_start %x, offset %x fragment_index %x fragment_offset %x\n",
+					SQUASHFS_INODE_BLK(inode), offset, inodep.start_block, next_block, next_offset, inodep.fragment, inodep.offset);
+			break;
+		}
+		case SQUASHFS_DIR_TYPE: {
+			squashfs_dir_inode_header inodep;
+
+			if(msBlk->swap) {
+				squashfs_dir_inode_header sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_DIR_INODE_HEADER(&inodep, &sinodep);
+			} else
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = inodep.file_size;
+			i->i_op = &squashfs_dir_inode_ops;
+			i->i_fop = &squashfs_dir_ops;
+			i->i_mode |= S_IFDIR;
+			i->i_mtime = inodep.mtime;
+			i->i_atime = inodep.mtime;
+			i->i_ctime = inodep.mtime;
+			i->u.squashfs_i.start_block = inodep.start_block;
+			i->u.squashfs_i.offset = inodep.offset;
+			i->u.squashfs_i.u.s2.directory_index_count = 0;
+			TRACE("Directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset,
+					inodep.start_block, inodep.offset);
+			break;
+		}
+		case SQUASHFS_LDIR_TYPE: {
+			squashfs_ldir_inode_header inodep;
+
+			if(msBlk->swap) {
+				squashfs_ldir_inode_header sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_LDIR_INODE_HEADER(&inodep, &sinodep);
+			} else
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = inodep.file_size;
+			i->i_op = &squashfs_dir_inode_ops;
+			i->i_fop = &squashfs_dir_ops;
+			i->i_mode |= S_IFDIR;
+			i->i_mtime = inodep.mtime;
+			i->i_atime = inodep.mtime;
+			i->i_ctime = inodep.mtime;
+			i->u.squashfs_i.start_block = inodep.start_block;
+			i->u.squashfs_i.offset = inodep.offset;
+			i->u.squashfs_i.u.s2.directory_index_start = next_block;
+			i->u.squashfs_i.u.s2.directory_index_offset = next_offset;
+			i->u.squashfs_i.u.s2.directory_index_count = inodep.i_count;
+			TRACE("Long directory inode %x:%x, start_block %x, offset %x\n", SQUASHFS_INODE_BLK(inode), offset,
+					inodep.start_block, inodep.offset);
+			break;
+		}
+		case SQUASHFS_SYMLINK_TYPE: {
+			squashfs_symlink_inode_header inodep;
+	
+			if(msBlk->swap) {
+				squashfs_symlink_inode_header sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_SYMLINK_INODE_HEADER(&inodep, &sinodep);
+			} else
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = inodep.symlink_size;
+			i->i_op = &page_symlink_inode_operations;
+			i->i_data.a_ops = &squashfs_symlink_aops;
+			i->i_mode |= S_IFLNK;
+			i->u.squashfs_i.start_block = next_block;
+			i->u.squashfs_i.offset = next_offset;
+			TRACE("Symbolic link inode %x:%x, start_block %x, offset %x\n",
+				SQUASHFS_INODE_BLK(inode), offset, next_block, next_offset);
+			break;
+		 }
+		 case SQUASHFS_BLKDEV_TYPE:
+		 case SQUASHFS_CHRDEV_TYPE: {
+			squashfs_dev_inode_header inodep;
+
+			if(msBlk->swap) {
+				squashfs_dev_inode_header sinodep;
+
+				if(!squashfs_get_cached_block(s, (char *) &sinodep, block,  offset, sizeof(sinodep),
+							&next_block, &next_offset))
+					goto failed_read;
+				SQUASHFS_SWAP_DEV_INODE_HEADER(&inodep, &sinodep);
+			} else	
+				if(!squashfs_get_cached_block(s, (char *) &inodep, block,  offset, sizeof(inodep),
+							&next_block, &next_offset))
+					goto failed_read;
+
+			i->i_size = 0;
+			i->i_mode |= (inodeb.inode_type == SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : S_IFBLK;
+			init_special_inode(i, i->i_mode, inodep.rdev);
+			TRACE("Device inode %x:%x, rdev %x\n", SQUASHFS_INODE_BLK(inode), offset, inodep.rdev);
+			break;
+		 }
+		 case SQUASHFS_FIFO_TYPE:
+		 case SQUASHFS_SOCKET_TYPE: {
+			i->i_size = 0;
+			i->i_mode |= (inodeb.inode_type == SQUASHFS_FIFO_TYPE) ? S_IFIFO : S_IFSOCK;
+			init_special_inode(i, i->i_mode, 0);
+			break;
+		 }
+		 default:
+			ERROR("Unknown inode type %d in squashfs_iget!\n", inodeb.inode_type);
+				goto failed_read1;
+	}
+	
+	if(inodeb.guid == SQUASHFS_GUIDS)
+		i->i_gid = i->i_uid;
+	else
+		i->i_gid = msBlk->guid[inodeb.guid];
+
+	insert_inode_hash(i);
+	return i;
+
+failed_read:
+	ERROR("Unable to read inode [%x:%x]\n", block, offset);
+
+failed_read1:
+	return NULL;
+}
+
+
+static struct super_block *squashfs_read_super(struct super_block *s,
+		void *data, int silent)
+{
+	kdev_t dev = s->s_dev;
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	int i;
+
+	TRACE("Entered squashfs_read_superblock\n");
+
+	msBlk->devblksize = get_hardsect_size(dev);
+	if(msBlk->devblksize < BLOCK_SIZE)
+		msBlk->devblksize = BLOCK_SIZE;
+	msBlk->devblksize_log2 = ffz(~msBlk->devblksize);
+	set_blocksize(dev, msBlk->devblksize);
+	s->s_blocksize = msBlk->devblksize;
+	s->s_blocksize_bits = msBlk->devblksize_log2;
+
+	init_MUTEX(&msBlk->read_page_mutex);
+	init_MUTEX(&msBlk->block_cache_mutex);
+	init_MUTEX(&msBlk->fragment_mutex);
+	
+	init_waitqueue_head(&msBlk->waitq);
+	init_waitqueue_head(&msBlk->fragment_wait_queue);
+
+	if(!read_data(s, (char *) sBlk, SQUASHFS_START, sizeof(squashfs_super_block) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
+		SERROR("unable to read superblock\n");
+		goto failed_mount;
+	}
+
+	/* Check it is a SQUASHFS superblock */
+	msBlk->swap = 0;
+	if((s->s_magic = sBlk->s_magic) != SQUASHFS_MAGIC) {
+		if(sBlk->s_magic == SQUASHFS_MAGIC_SWAP) {
+			squashfs_super_block sblk;
+			WARNING("Mounting a different endian SQUASHFS filesystem on %s\n", bdevname(dev));
+			SQUASHFS_SWAP_SUPER_BLOCK(&sblk, sBlk);
+			memcpy(sBlk, &sblk, sizeof(squashfs_super_block));
+			msBlk->swap = 1;
+		} else  {
+			SERROR("Can't find a SQUASHFS superblock on %s\n", bdevname(dev));
+			goto failed_mount;
+		}
+	}
+
+	/* Check the MAJOR & MINOR versions */
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+	if((sBlk->s_major != 1) && (sBlk->s_major != 2 || sBlk->s_minor > SQUASHFS_MINOR)) {
+		SERROR("Major/Minor mismatch, filesystem is (%d:%d), I support (1 : x) or (2 : <= %d)\n",
+				sBlk->s_major, sBlk->s_minor, SQUASHFS_MINOR);
+		goto failed_mount;
+	}
+	if(sBlk->s_major == 1)
+		sBlk->block_size = sBlk->block_size_1;
+#else
+	if(sBlk->s_major != SQUASHFS_MAJOR || sBlk->s_minor > SQUASHFS_MINOR) {
+		SERROR("Major/Minor mismatch, filesystem is (%d:%d), I support (%d: <= %d)\n",
+				sBlk->s_major, sBlk->s_minor, SQUASHFS_MAJOR, SQUASHFS_MINOR);
+		goto failed_mount;
+	}
+#endif
+
+	TRACE("Found valid superblock on %s\n", bdevname(dev));
+	TRACE("Inodes are %scompressed\n", SQUASHFS_UNCOMPRESSED_INODES(sBlk->flags) ? "un" : "");
+	TRACE("Data is %scompressed\n", SQUASHFS_UNCOMPRESSED_DATA(sBlk->flags) ? "un" : "");
+	TRACE("Check data is %s present in the filesystem\n", SQUASHFS_CHECK_DATA(sBlk->flags) ? "" : "not");
+	TRACE("Filesystem size %d bytes\n", sBlk->bytes_used);
+	TRACE("Block size %d\n", sBlk->block_size);
+	TRACE("Number of inodes %d\n", sBlk->inodes);
+	if(sBlk->s_major > 1)
+		TRACE("Number of fragments %d\n", sBlk->fragments);
+	TRACE("Number of uids %d\n", sBlk->no_uids);
+	TRACE("Number of gids %d\n", sBlk->no_guids);
+	TRACE("sBlk->inode_table_start %x\n", sBlk->inode_table_start);
+	TRACE("sBlk->directory_table_start %x\n", sBlk->directory_table_start);
+		if(sBlk->s_major > 1)
+	TRACE("sBlk->fragment_table_start %x\n", sBlk->fragment_table_start);
+	TRACE("sBlk->uid_start %x\n", sBlk->uid_start);
+
+	s->s_flags |= MS_RDONLY;
+	s->s_op = &squashfs_ops;
+
+	/* Init inode_table block pointer array */
+	if(!(msBlk->block_cache = (squashfs_cache *) kmalloc(sizeof(squashfs_cache) * SQUASHFS_CACHED_BLKS, GFP_KERNEL))) {
+		ERROR("Failed to allocate block cache\n");
+		goto failed_mount;
+	}
+
+	for(i = 0; i < SQUASHFS_CACHED_BLKS; i++)
+		msBlk->block_cache[i].block = SQUASHFS_INVALID_BLK;
+
+	msBlk->next_cache = 0;
+
+	/* Allocate read_data block */
+	msBlk->read_size = (sBlk->block_size < SQUASHFS_METADATA_SIZE) ? SQUASHFS_METADATA_SIZE : sBlk->block_size;
+	if(!(msBlk->read_data = (char *) kmalloc(msBlk->read_size, GFP_KERNEL))) {
+		ERROR("Failed to allocate read_data block\n");
+		goto failed_mount1;
+	}
+
+	/* Allocate read_page block */
+	if(sBlk->block_size > PAGE_CACHE_SIZE) {
+		if(!(msBlk->read_page = (char *) kmalloc(sBlk->block_size, GFP_KERNEL))) {
+			ERROR("Failed to allocate read_page block\n");
+			goto failed_mount2;
+		}
+	} else
+		msBlk->read_page = NULL;
+
+	/* Allocate uid and gid tables */
+	if(!(msBlk->uid = (squashfs_uid *) kmalloc((sBlk->no_uids +
+		sBlk->no_guids) * sizeof(squashfs_uid), GFP_KERNEL))) {
+		ERROR("Failed to allocate uid/gid table\n");
+		goto failed_mount3;
+	}
+	msBlk->guid = msBlk->uid + sBlk->no_uids;
+   
+	if(msBlk->swap) {
+		squashfs_uid suid[sBlk->no_uids + sBlk->no_guids];
+
+		if(!read_data(s, (char *) &suid, sBlk->uid_start, ((sBlk->no_uids + sBlk->no_guids) *
+				sizeof(squashfs_uid)) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
+			SERROR("unable to read uid/gid table\n");
+			goto failed_mount4;
+		}
+		SQUASHFS_SWAP_DATA(msBlk->uid, suid, (sBlk->no_uids + sBlk->no_guids), (sizeof(squashfs_uid) * 8));
+	} else
+		if(!read_data(s, (char *) msBlk->uid, sBlk->uid_start, ((sBlk->no_uids + sBlk->no_guids) *
+				sizeof(squashfs_uid)) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
+			SERROR("unable to read uid/gid table\n");
+			goto failed_mount4;
+		}
+
+
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+	if(sBlk->s_major == 1) {
+		msBlk->iget = squashfs_iget_1;
+		msBlk->read_blocklist = read_blocklist_1;
+		msBlk->fragment = NULL;
+		msBlk->fragment_index = NULL;
+		goto allocate_root;
+	}
+#endif
+	msBlk->iget = squashfs_iget;
+	msBlk->read_blocklist = read_blocklist;
+
+	if(!(msBlk->fragment = (struct squashfs_fragment_cache *) kmalloc(sizeof(struct squashfs_fragment_cache) * SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL))) {
+		ERROR("Failed to allocate fragment block cache\n");
+		goto failed_mount4;
+	}
+
+	for(i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) {
+		msBlk->fragment[i].locked = 0;
+		msBlk->fragment[i].block = SQUASHFS_INVALID_BLK;
+		msBlk->fragment[i].data = NULL;
+	}
+
+	msBlk->next_fragment = 0;
+
+	/* Allocate fragment index table */
+	if(!(msBlk->fragment_index = (squashfs_fragment_index *) kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments), GFP_KERNEL))) {
+		ERROR("Failed to allocate uid/gid table\n");
+		goto failed_mount5;
+	}
+   
+	if(SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments) &&
+	 	!read_data(s, (char *) msBlk->fragment_index, sBlk->fragment_table_start,
+		SQUASHFS_FRAGMENT_INDEX_BYTES(sBlk->fragments) | SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
+			SERROR("unable to read fragment index table\n");
+			goto failed_mount6;
+	}
+
+	if(msBlk->swap) {
+		int i;
+		squashfs_fragment_index fragment;
+
+		for(i = 0; i < SQUASHFS_FRAGMENT_INDEXES(sBlk->fragments); i++) {
+			SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment), &msBlk->fragment_index[i], 1);
+			msBlk->fragment_index[i] = fragment;
+		}
+	}
+
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+allocate_root:
+#endif
+	if(!(s->s_root = d_alloc_root((msBlk->iget)(s, sBlk->root_inode)))) {
+		ERROR("Root inode create failed\n");
+		goto failed_mount5;
+	}
+
+	TRACE("Leaving squashfs_read_super\n");
+	return s;
+
+failed_mount6:
+	kfree(msBlk->fragment_index);
+failed_mount5:
+	kfree(msBlk->fragment);
+failed_mount4:
+	kfree(msBlk->uid);
+failed_mount3:
+	kfree(msBlk->read_page);
+failed_mount2:
+	kfree(msBlk->read_data);
+failed_mount1:
+	kfree(msBlk->block_cache);
+failed_mount:
+	return NULL;
+}
+
+
+static int squashfs_statfs(struct super_block *s, struct statfs *buf)
+{
+	squashfs_super_block *sBlk = &s->u.squashfs_sb.sBlk;
+
+	TRACE("Entered squashfs_statfs\n");
+	buf->f_type = SQUASHFS_MAGIC;
+	buf->f_bsize = sBlk->block_size;
+	buf->f_blocks = ((sBlk->bytes_used - 1) >> sBlk->block_log) + 1;
+	buf->f_bfree = buf->f_bavail = 0;
+	buf->f_files = sBlk->inodes;
+	buf->f_ffree = 0;
+	buf->f_namelen = SQUASHFS_NAME_LEN;
+	return 0;
+}
+
+
+static int squashfs_symlink_readpage(struct file *file, struct page *page)
+{
+	struct inode *inode = page->mapping->host;
+	int index = page->index << PAGE_CACHE_SHIFT, length, bytes;
+	unsigned int block = inode->u.squashfs_i.start_block;
+	int offset = inode->u.squashfs_i.offset;
+ 	void *pageaddr = kmap(page);
+
+	TRACE("Entered squashfs_symlink_readpage, page index %x, start block %x, offset %x\n",
+		(unsigned int) page->index, inode->u.squashfs_i.start_block, inode->u.squashfs_i.offset);
+
+	for(length = 0; length < index; length += bytes) {
+		if(!(bytes = squashfs_get_cached_block(inode->i_sb, NULL, block, offset,
+					PAGE_CACHE_SIZE, &block, &offset))) {
+			ERROR("Unable to read symbolic link [%x:%x]\n", block, offset);
+			goto skip_read;
+		}
+	}
+
+	if(length != index) {
+		ERROR("(squashfs_symlink_readpage) length != index\n");
+		bytes = 0;
+		goto skip_read;
+	}
+
+	bytes = (inode->i_size - length) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE : inode->i_size - length;
+	if(!(bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block, offset, bytes, &block, &offset)))
+		ERROR("Unable to read symbolic link [%x:%x]\n", block, offset);
+
+skip_read:
+	memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
+	kunmap(page);
+	flush_dcache_page(page);
+	SetPageUptodate(page);
+	UnlockPage(page);
+
+	return 0;
+}
+
+
+#define SIZE 256
+
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+static unsigned int read_blocklist_1(struct inode *inode, int index, int readahead_blks,
+		char *block_list, unsigned short **block_p, unsigned int *bsize)
+{
+	squashfs_sb_info *msBlk = &inode->i_sb->u.squashfs_sb;
+	unsigned short *block_listp;
+	int i = 0;
+	int block_ptr = inode->u.squashfs_i.block_list_start;
+	int offset = inode->u.squashfs_i.offset;
+	unsigned int block = inode->u.squashfs_i.start_block;
+
+	for(;;) {
+		int blocks = (index + readahead_blks - i);
+		if(blocks > (SIZE >> 1)) {
+			if((index - i) <= (SIZE >> 1))
+				blocks = index - i;
+			else
+				blocks = SIZE >> 1;
+		}
+
+		if(msBlk->swap) {
+			unsigned char sblock_list[SIZE];
+			if(!squashfs_get_cached_block(inode->i_sb, (char *) sblock_list, block_ptr, offset, blocks << 1, &block_ptr, &offset)) {
+				ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset);
+				return 0;
+			}
+			SQUASHFS_SWAP_SHORTS(((unsigned short *)block_list), ((unsigned short *)sblock_list), blocks);
+		} else
+			if(!squashfs_get_cached_block(inode->i_sb, (char *) block_list, block_ptr, offset, blocks << 1, &block_ptr, &offset)) {
+				ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset);
+				return 0;
+			}
+		for(block_listp = (unsigned short *) block_list; i < index && blocks; i ++, block_listp ++, blocks --)
+			block += SQUASHFS_COMPRESSED_SIZE(*block_listp);
+		if(blocks >= readahead_blks)
+			break;
+	}
+
+	if(bsize)
+		*bsize = SQUASHFS_COMPRESSED_SIZE(*block_listp) | (!SQUASHFS_COMPRESSED(*block_listp) ? SQUASHFS_COMPRESSED_BIT_BLOCK : 0);
+	else
+		*block_p = block_listp;
+	return block;
+}
+#endif
+
+
+
+static unsigned int read_blocklist(struct inode *inode, int index, int readahead_blks,
+		char *block_list, unsigned short **block_p, unsigned int *bsize)
+{
+	squashfs_sb_info *msBlk = &inode->i_sb->u.squashfs_sb;
+	unsigned int *block_listp;
+	int i = 0;
+	int block_ptr = inode->u.squashfs_i.block_list_start;
+	int offset = inode->u.squashfs_i.offset;
+	unsigned int block = inode->u.squashfs_i.start_block;
+
+	for(;;) {
+		int blocks = (index + readahead_blks - i);
+		if(blocks > (SIZE >> 2)) {
+			if((index - i) <= (SIZE >> 2))
+				blocks = index - i;
+			else
+				blocks = SIZE >> 2;
+		}
+
+		if(msBlk->swap) {
+			unsigned char sblock_list[SIZE];
+			if(!squashfs_get_cached_block(inode->i_sb, (char *) sblock_list, block_ptr, offset, blocks << 2, &block_ptr, &offset)) {
+				ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset);
+				return 0;
+			}
+			SQUASHFS_SWAP_INTS(((unsigned int *)block_list), ((unsigned int *)sblock_list), blocks);
+		} else
+			if(!squashfs_get_cached_block(inode->i_sb, (char *) block_list, block_ptr, offset, blocks << 2, &block_ptr, &offset)) {
+				ERROR("Unable to read block list [%d:%x]\n", block_ptr, offset);
+				return 0;
+			}
+		for(block_listp = (unsigned int *) block_list; i < index && blocks; i ++, block_listp ++, blocks --)
+			block += SQUASHFS_COMPRESSED_SIZE_BLOCK(*block_listp);
+		if(blocks >= readahead_blks)
+			break;
+	}
+
+	*bsize = *block_listp;
+	return block;
+}
+
+
+static int squashfs_readpage(struct file *file, struct page *page)
+{
+	struct inode *inode = page->mapping->host;
+	squashfs_sb_info *msBlk = &inode->i_sb->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	unsigned char block_list[SIZE];
+	unsigned int bsize, block, i = 0, bytes = 0, byte_offset = 0;
+	int index = page->index >> (sBlk->block_log - PAGE_CACHE_SHIFT);
+ 	void *pageaddr = kmap(page);
+	struct squashfs_fragment_cache *fragment = NULL;
+	char *data_ptr = msBlk->read_page;
+	
+	int mask = (1 << (sBlk->block_log - PAGE_CACHE_SHIFT)) - 1;
+	int start_index = page->index & ~mask;
+	int end_index = start_index | mask;
+
+	TRACE("Entered squashfs_readpage, page index %x, start block %x\n", (unsigned int) page->index,
+		inode->u.squashfs_i.start_block);
+
+	if(page->index >= ((inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT)) {
+		goto skip_read;
+	}
+
+	if(inode->u.squashfs_i.u.s1.fragment_start_block == SQUASHFS_INVALID_BLK || index < (inode->i_size >> sBlk->block_log)) {
+		if((block = (msBlk->read_blocklist)(inode, index, 1, block_list, NULL, &bsize)) == 0)
+			goto skip_read;
+
+		down(&msBlk->read_page_mutex);
+		if(!(bytes = read_data(inode->i_sb, msBlk->read_page, block, bsize, NULL))) {
+			ERROR("Unable to read page, block %x, size %x\n", block, bsize);
+			up(&msBlk->read_page_mutex);
+			goto skip_read;
+		}
+	} else {
+		if((fragment = get_cached_fragment(inode->i_sb, inode->u.squashfs_i.u.s1.fragment_start_block, inode->u.squashfs_i.u.s1.fragment_size)) == NULL) {
+			ERROR("Unable to read page, block %x, size %x\n", inode->u.squashfs_i.u.s1.fragment_start_block, (int) inode->u.squashfs_i.u.s1.fragment_size);
+			goto skip_read;
+		}
+		bytes = inode->u.squashfs_i.u.s1.fragment_offset + (inode->i_size & (sBlk->block_size - 1));
+		byte_offset = inode->u.squashfs_i.u.s1.fragment_offset;
+		data_ptr = fragment->data;
+	}
+
+	for(i = start_index; i <= end_index && byte_offset < bytes; i++, byte_offset += PAGE_CACHE_SIZE) {
+		struct page *push_page;
+		int available_bytes = (bytes - byte_offset) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE : bytes - byte_offset;
+
+		TRACE("bytes %d, i %d, byte_offset %d, available_bytes %d\n", bytes, i, byte_offset, available_bytes);
+
+		if(i == page->index)  {
+			memcpy(pageaddr, data_ptr + byte_offset, available_bytes);
+			memset(pageaddr + available_bytes, 0, PAGE_CACHE_SIZE - available_bytes);
+			kunmap(page);
+			flush_dcache_page(page);
+			SetPageUptodate(page);
+			UnlockPage(page);
+		} else if((push_page = grab_cache_page_nowait(page->mapping, i))) {
+ 			void *pageaddr = kmap(push_page);
+			memcpy(pageaddr, data_ptr + byte_offset, available_bytes);
+			memset(pageaddr + available_bytes, 0, PAGE_CACHE_SIZE - available_bytes);
+			kunmap(push_page);
+			flush_dcache_page(push_page);
+			SetPageUptodate(push_page);
+			UnlockPage(push_page);
+			page_cache_release(push_page);
+		}
+	}
+
+	if(inode->u.squashfs_i.u.s1.fragment_start_block == SQUASHFS_INVALID_BLK || index < (inode->i_size >> sBlk->block_log))
+		up(&msBlk->read_page_mutex);
+	else
+		release_cached_fragment(msBlk, fragment);
+
+	return 0;
+
+skip_read:
+	memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
+	kunmap(page);
+	flush_dcache_page(page);
+	SetPageUptodate(page);
+	UnlockPage(page);
+
+	return 0;
+}
+
+
+static int squashfs_readpage4K(struct file *file, struct page *page)
+{
+	struct inode *inode = page->mapping->host;
+	squashfs_sb_info *msBlk = &inode->i_sb->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	unsigned char block_list[SIZE];
+	unsigned int bsize, block, bytes = 0;
+ 	void *pageaddr = kmap(page);
+	
+	TRACE("Entered squashfs_readpage4K, page index %x, start block %x\n", (unsigned int) page->index,
+		inode->u.squashfs_i.start_block);
+
+	if(page->index >= ((inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT)) {
+		goto skip_read;
+	}
+
+	if(inode->u.squashfs_i.u.s1.fragment_start_block == SQUASHFS_INVALID_BLK || page->index < (inode->i_size >> sBlk->block_log)) {
+		block = (msBlk->read_blocklist)(inode, page->index, 1, block_list, NULL, &bsize);
+
+		if(!(bytes = read_data(inode->i_sb, pageaddr, block, bsize, NULL)))
+			ERROR("Unable to read page, block %x, size %x\n", block, bsize);
+	} else {
+		struct squashfs_fragment_cache *fragment;
+
+		if((fragment = get_cached_fragment(inode->i_sb, inode->u.squashfs_i.u.s1.fragment_start_block, inode->u.squashfs_i.u.s1.fragment_size)) == NULL)
+			ERROR("Unable to read page, block %x, size %x\n", inode->u.squashfs_i.u.s1.fragment_start_block, (int) inode->u.squashfs_i.u.s1.fragment_size);
+		else {
+			bytes = inode->i_size & (sBlk->block_size - 1);
+			memcpy(pageaddr, fragment->data + inode->u.squashfs_i.u.s1.fragment_offset, bytes);
+			release_cached_fragment(msBlk, fragment);
+		}
+	}
+
+skip_read:
+	memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
+	kunmap(page);
+	flush_dcache_page(page);
+	SetPageUptodate(page);
+	UnlockPage(page);
+
+	return 0;
+}
+
+
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+static int squashfs_readpage_lessthan4K(struct file *file, struct page *page)
+{
+	struct inode *inode = page->mapping->host;
+	squashfs_sb_info *msBlk = &inode->i_sb->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	unsigned char block_list[SIZE];
+	unsigned short *block_listp, block, bytes = 0;
+	int index = page->index << (PAGE_CACHE_SHIFT - sBlk->block_log);
+	int file_blocks = ((inode->i_size - 1) >> sBlk->block_log) + 1;
+	int readahead_blks = 1 << (PAGE_CACHE_SHIFT - sBlk->block_log);
+ 	void *pageaddr = kmap(page);
+	
+	int i_end = index + (1 << (PAGE_CACHE_SHIFT - sBlk->block_log));
+	int byte;
+
+	TRACE("Entered squashfs_readpage_lessthan4K, page index %x, start block %x\n", (unsigned int) page->index,
+		inode->u.squashfs_i.start_block);
+
+	block = read_blocklist_1(inode, index, readahead_blks, block_list, &block_listp, NULL);
+
+	if(i_end > file_blocks)
+		i_end = file_blocks;
+
+	while(index < i_end) {
+		int c_byte = !SQUASHFS_COMPRESSED(*block_listp) ? SQUASHFS_COMPRESSED_SIZE(*block_listp) | SQUASHFS_COMPRESSED_BIT_BLOCK : *block_listp;
+		if(!(byte = read_data(inode->i_sb, pageaddr, block, c_byte, NULL))) {
+			ERROR("Unable to read page, block %x, size %x\n", block, *block_listp);
+			goto skip_read;
+		}
+		block += SQUASHFS_COMPRESSED_SIZE(*block_listp);
+		pageaddr += byte;
+		bytes += byte;
+		index ++;
+		block_listp ++;
+	}
+
+skip_read:
+	memset(pageaddr, 0, PAGE_CACHE_SIZE - bytes);
+	kunmap(page);
+	flush_dcache_page(page);
+	SetPageUptodate(page);
+	UnlockPage(page);
+
+	return 0;
+}
+#endif
+
+
+static int get_dir_index_using_offset(struct super_block *s, unsigned int *next_block,
+	unsigned int *next_offset, unsigned int index_start, unsigned int index_offset,
+	int i_count, long long f_pos)
+{
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	int i, length = 0;
+	squashfs_dir_index index;
+
+	TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n", i_count, (unsigned int) f_pos);
+
+	if(f_pos == 0)
+		return 0;
+
+	for(i = 0; i < i_count; i++) {
+		if(msBlk->swap) {
+			squashfs_dir_index sindex;
+			squashfs_get_cached_block(s, (char *) &sindex, index_start, index_offset,
+				sizeof(sindex), &index_start, &index_offset);
+			SQUASHFS_SWAP_DIR_INDEX(&index, &sindex);
+		} else
+			squashfs_get_cached_block(s, (char *) &index, index_start, index_offset,
+				sizeof(index), &index_start, &index_offset);
+
+		if(index.index > f_pos)
+			break;
+
+		squashfs_get_cached_block(s, NULL, index_start, index_offset,
+				index.size + 1, &index_start, &index_offset);
+
+		length = index.index;
+		*next_block = index.start_block + sBlk->directory_table_start;
+	}
+
+	*next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE;
+	return length;
+}
+
+
+static int get_dir_index_using_name(struct super_block *s, unsigned int *next_block,
+	unsigned int *next_offset, unsigned int index_start, unsigned int index_offset,
+	int i_count, const char *name, int size)
+{
+	squashfs_sb_info *msBlk = &s->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	int i, length = 0;
+	char buffer[sizeof(squashfs_dir_index) + SQUASHFS_NAME_LEN + 1];
+	squashfs_dir_index *index = (squashfs_dir_index *) buffer;
+	char str[SQUASHFS_NAME_LEN + 1];
+
+	TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count);
+
+	strncpy(str, name, size);
+	str[size] = '\0';
+
+	for(i = 0; i < i_count; i++) {
+		if(msBlk->swap) {
+			squashfs_dir_index sindex;
+			squashfs_get_cached_block(s, (char *) &sindex, index_start, index_offset,
+				sizeof(sindex), &index_start, &index_offset);
+			SQUASHFS_SWAP_DIR_INDEX(index, &sindex);
+		} else
+			squashfs_get_cached_block(s, (char *) index, index_start, index_offset,
+				sizeof(squashfs_dir_index), &index_start, &index_offset);
+
+		squashfs_get_cached_block(s, index->name, index_start, index_offset,
+				index->size + 1, &index_start, &index_offset);
+
+		index->name[index->size + 1] = '\0';
+
+		if(strcmp(index->name, str) > 0)
+			break;
+
+		length = index->index;
+		*next_block = index->start_block + sBlk->directory_table_start;
+	}
+
+	*next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE;
+	return length;
+}
+
+
+static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir)
+{
+	struct inode *i = file->f_dentry->d_inode;
+	squashfs_sb_info *msBlk = &i->i_sb->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	int next_block = i->u.squashfs_i.start_block + sBlk->directory_table_start, next_offset =
+		i->u.squashfs_i.offset, length = 0, dirs_read = 0, dir_count;
+	squashfs_dir_header dirh;
+	char buffer[sizeof(squashfs_dir_entry) + SQUASHFS_NAME_LEN + 1];
+	squashfs_dir_entry *dire = (squashfs_dir_entry *) buffer;
+
+	TRACE("Entered squashfs_readdir [%x:%x]\n", next_block, next_offset);
+
+	length = get_dir_index_using_offset(i->i_sb, &next_block, &next_offset, i->u.squashfs_i.u.s2.directory_index_start,
+		i->u.squashfs_i.u.s2.directory_index_offset, i->u.squashfs_i.u.s2.directory_index_count, file->f_pos);
+
+	while(length < i->i_size) {
+		/* read directory header */
+		if(msBlk->swap) {
+			squashfs_dir_header sdirh;
+			if(!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, next_block,
+						next_offset, sizeof(sdirh), &next_block, &next_offset))
+				goto failed_read;
+			length += sizeof(sdirh);
+			SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh);
+		} else {
+			if(!squashfs_get_cached_block(i->i_sb, (char *) &dirh, next_block,
+						next_offset, sizeof(dirh), &next_block, &next_offset))
+				goto failed_read;
+			length += sizeof(dirh);
+		}
+
+		dir_count = dirh.count + 1;
+		while(dir_count--) {
+			if(msBlk->swap) {
+				squashfs_dir_entry sdire;
+				if(!squashfs_get_cached_block(i->i_sb, (char *) &sdire, next_block,
+							next_offset, sizeof(sdire), &next_block, &next_offset))
+					goto failed_read;
+				length += sizeof(sdire);
+				SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire);
+			} else {
+				if(!squashfs_get_cached_block(i->i_sb, (char *) dire, next_block,
+							next_offset, sizeof(*dire), &next_block, &next_offset))
+					goto failed_read;
+				length += sizeof(*dire);
+			}
+
+			if(!squashfs_get_cached_block(i->i_sb, dire->name, next_block,
+						next_offset, dire->size + 1, &next_block, &next_offset))
+				goto failed_read;
+			length += dire->size + 1;
+
+			if(file->f_pos >= length)
+				continue;
+
+			dire->name[dire->size + 1] = '\0';
+
+			TRACE("Calling filldir(%x, %s, %d, %d, %x:%x, %d)\n", (unsigned int) dirent,
+			dire->name, dire->size + 1, (int) file->f_pos,
+			dirh.start_block, dire->offset, squashfs_filetype_table[dire->type]);
+
+			if(filldir(dirent, dire->name, dire->size + 1, file->f_pos, SQUASHFS_MK_VFS_INODE(dirh.start_block,
+							dire->offset), squashfs_filetype_table[dire->type]) < 0) {
+				TRACE("Filldir returned less than 0\n");
+				return dirs_read;
+			}
+
+			file->f_pos = length;
+			dirs_read ++;
+		}
+	}
+
+	return dirs_read;
+
+failed_read:
+	ERROR("Unable to read directory block [%x:%x]\n", next_block, next_offset);
+	return 0;
+}
+
+
+static struct dentry *squashfs_lookup(struct inode *i, struct dentry *dentry)
+{
+	const char *name =dentry->d_name.name;
+	int len = dentry->d_name.len;
+	struct inode *inode = NULL;
+	squashfs_sb_info *msBlk = &i->i_sb->u.squashfs_sb;
+	squashfs_super_block *sBlk = &msBlk->sBlk;
+	int next_block = i->u.squashfs_i.start_block + sBlk->directory_table_start, next_offset =
+		i->u.squashfs_i.offset, length = 0, dir_count;
+	squashfs_dir_header dirh;
+	char buffer[sizeof(squashfs_dir_entry) + SQUASHFS_NAME_LEN];
+	squashfs_dir_entry *dire = (squashfs_dir_entry *) buffer;
+	int squashfs_2_1 = sBlk->s_major == 2 && sBlk->s_minor == 1;
+
+	TRACE("Entered squashfs_lookup [%x:%x]\n", next_block, next_offset);
+
+	length = get_dir_index_using_name(i->i_sb, &next_block, &next_offset, i->u.squashfs_i.u.s2.directory_index_start,
+		i->u.squashfs_i.u.s2.directory_index_offset, i->u.squashfs_i.u.s2.directory_index_count, name, len);
+
+	while(length < i->i_size) {
+		/* read directory header */
+		if(msBlk->swap) {
+			squashfs_dir_header sdirh;
+			if(!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, next_block, next_offset,
+						sizeof(sdirh), &next_block, &next_offset))
+				goto failed_read;
+			length += sizeof(sdirh);
+			SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh);
+		} else {
+			if(!squashfs_get_cached_block(i->i_sb, (char *) &dirh, next_block, next_offset,
+						sizeof(dirh), &next_block, &next_offset))
+				goto failed_read;
+			length += sizeof(dirh);
+		}
+
+		dir_count = dirh.count + 1;
+		while(dir_count--) {
+			if(msBlk->swap) {
+				squashfs_dir_entry sdire;
+				if(!squashfs_get_cached_block(i->i_sb, (char *) &sdire,
+							next_block,next_offset, sizeof(sdire), &next_block, &next_offset))
+					goto failed_read;
+				length += sizeof(sdire);
+				SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire);
+			} else {
+				if(!squashfs_get_cached_block(i->i_sb, (char *) dire,
+							next_block,next_offset, sizeof(*dire), &next_block, &next_offset))
+					goto failed_read;
+				length += sizeof(*dire);
+			}
+
+			if(!squashfs_get_cached_block(i->i_sb, dire->name,
+						next_block, next_offset, dire->size + 1, &next_block, &next_offset))
+				goto failed_read;
+			length += dire->size + 1;
+
+			if(squashfs_2_1 && name[0] < dire->name[0])
+				goto exit_loop;
+
+			if((len == dire->size + 1) && !strncmp(name, dire->name, len)) {
+				squashfs_inode ino = SQUASHFS_MKINODE(dirh.start_block, dire->offset);
+
+				TRACE("calling squashfs_iget for directory entry %s, inode %x:%x\n",
+						name, dirh.start_block, dire->offset);
+
+				inode = (msBlk->iget)(i->i_sb, ino);
+
+				goto exit_loop;
+			}
+		}
+	}
+
+exit_loop:
+	d_add(dentry, inode);
+	return ERR_PTR(0);
+
+failed_read:
+	ERROR("Unable to read directory block [%x:%x]\n", next_block, next_offset);
+	goto exit_loop;
+}
+
+
+static void squashfs_put_super(struct super_block *s)
+{
+	int i;
+
+	squashfs_sb_info *sbi = (squashfs_sb_info *) &s->u.squashfs_sb;
+	if(sbi->block_cache) {
+		for(i = 0; i < SQUASHFS_CACHED_BLKS; i++)
+			if(sbi->block_cache[i].block != SQUASHFS_INVALID_BLK)
+				kfree(sbi->block_cache[i].data);
+		kfree(sbi->block_cache);
+	}
+	if(sbi->read_data) kfree(sbi->read_data);
+	if(sbi->read_page) kfree(sbi->read_page);
+	if(sbi->uid) kfree(sbi->uid);
+	if(sbi->fragment) {
+		for(i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) 
+			if(sbi->fragment[i].data != NULL)
+				SQUASHFS_FREE(sbi->fragment[i].data);
+		kfree(sbi->fragment);
+	}
+	if(sbi->fragment_index) kfree(sbi->fragment_index);
+	sbi->block_cache = NULL;
+	sbi->uid = NULL;
+	sbi->read_data = NULL;
+	sbi->read_page = NULL;
+	sbi->fragment = NULL;
+	sbi->fragment_index = NULL;
+}
+
+
+static int __init init_squashfs_fs(void)
+{
+
+	printk(KERN_INFO "Squashfs 2.2 (released 2005/07/03) (C) 2002-2004, 2005 Phillip Lougher\n");
+
+	if(!(stream.workspace = (char *) vmalloc(zlib_inflate_workspacesize()))) {
+		ERROR("Failed to allocate zlib workspace\n");
+		return -ENOMEM;
+	}
+	return register_filesystem(&squashfs_fs_type);
+}
+
+
+static void __exit exit_squashfs_fs(void)
+{
+	vfree(stream.workspace);
+	unregister_filesystem(&squashfs_fs_type);
+}
+
+
+EXPORT_NO_SYMBOLS;
+
+module_init(init_squashfs_fs);
+module_exit(exit_squashfs_fs);
+MODULE_DESCRIPTION("squashfs, a compressed read-only filesystem");
+MODULE_AUTHOR("Phillip Lougher <phillip@lougher.demon.co.uk>");
+MODULE_LICENSE("GPL");
diff --new-file -urp linux-2.4.31/fs/squashfs/Makefile linux-2.4.31-squashfs2.2/fs/squashfs/Makefile
--- linux-2.4.31/fs/squashfs/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.31-squashfs2.2/fs/squashfs/Makefile	2005-07-04 02:28:51.000000000 +0100
@@ -0,0 +1,11 @@
+#
+# Makefile for the linux squashfs routines.
+#
+
+O_TARGET := squashfs.o
+
+obj-y  := inode.o
+
+obj-m := $(O_TARGET)
+
+include $(TOPDIR)/Rules.make
diff --new-file -urp linux-2.4.31/include/linux/fs.h linux-2.4.31-squashfs2.2/include/linux/fs.h
--- linux-2.4.31/include/linux/fs.h	2005-04-04 02:42:20.000000000 +0100
+++ linux-2.4.31-squashfs2.2/include/linux/fs.h	2005-07-04 02:28:51.000000000 +0100
@@ -324,6 +324,7 @@ extern void set_bh_page(struct buffer_he
 #include <linux/usbdev_fs_i.h>
 #include <linux/jffs2_fs_i.h>
 #include <linux/cramfs_fs_sb.h>
+#include <linux/squashfs_fs_i.h>
 
 /*
  * Attribute flags.  These should be or-ed together to figure out what
@@ -519,6 +520,7 @@ struct inode {
 		struct socket			socket_i;
 		struct usbdev_inode_info        usbdev_i;
 		struct jffs2_inode_info		jffs2_i;
+		struct squashfs_inode_info	squashfs_i;
 		void				*generic_ip;
 	} u;
 };
@@ -734,6 +736,7 @@ struct nameidata {
 #include <linux/usbdev_fs_sb.h>
 #include <linux/cramfs_fs_sb.h>
 #include <linux/jffs2_fs_sb.h>
+#include <linux/squashfs_fs_sb.h>
 
 extern struct list_head super_blocks;
 extern spinlock_t sb_lock;
@@ -793,6 +796,7 @@ struct super_block {
 		struct usbdev_sb_info   usbdevfs_sb;
 		struct jffs2_sb_info	jffs2_sb;
 		struct cramfs_sb_info	cramfs_sb;
+		struct squashfs_sb_info	squashfs_sb;
 		void			*generic_sbp;
 	} u;
 	/*
diff --new-file -urp linux-2.4.31/include/linux/squashfs_fs.h linux-2.4.31-squashfs2.2/include/linux/squashfs_fs.h
--- linux-2.4.31/include/linux/squashfs_fs.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.31-squashfs2.2/include/linux/squashfs_fs.h	2005-07-04 02:28:51.000000000 +0100
@@ -0,0 +1,523 @@
+#ifndef SQUASHFS_FS
+#define SQUASHFS_FS
+/*
+ * Squashfs
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * squashfs_fs.h
+ */
+
+#ifdef	CONFIG_SQUASHFS_VMALLOC
+#define SQUASHFS_ALLOC(a)		vmalloc(a)
+#define SQUASHFS_FREE(a)		vfree(a)
+#else
+#define SQUASHFS_ALLOC(a)		kmalloc(a, GFP_KERNEL)
+#define SQUASHFS_FREE(a)		kfree(a)
+#endif
+#ifdef CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE
+#define SQUASHFS_CACHED_FRAGMENTS	CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE	
+#else
+#define SQUASHFS_CACHED_FRAGMENTS	3
+#endif
+#define SQUASHFS_MAJOR			2
+#define SQUASHFS_MINOR			1
+#define SQUASHFS_MAGIC			0x73717368
+#define SQUASHFS_MAGIC_SWAP		0x68737173
+#define SQUASHFS_START			0
+
+/* size of metadata (inode and directory) blocks */
+#define SQUASHFS_METADATA_SIZE		8192
+#define SQUASHFS_METADATA_LOG		13
+
+/* default size of data blocks */
+#define SQUASHFS_FILE_SIZE		65536
+#define SQUASHFS_FILE_LOG		16
+
+#define SQUASHFS_FILE_MAX_SIZE		65536
+
+/* Max number of uids and gids */
+#define SQUASHFS_UIDS			256
+#define SQUASHFS_GUIDS			255
+
+/* Max length of filename (not 255) */
+#define SQUASHFS_NAME_LEN		256
+
+#define SQUASHFS_INVALID		((long long) 0xffffffffffff)
+#define SQUASHFS_INVALID_BLK		((long long) 0xffffffff)
+#define SQUASHFS_USED_BLK		((long long) 0xfffffffe)
+
+/* Filesystem flags */
+#define SQUASHFS_NOI			0
+#define SQUASHFS_NOD			1
+#define SQUASHFS_CHECK			2
+#define SQUASHFS_NOF			3
+#define SQUASHFS_NO_FRAG		4
+#define SQUASHFS_ALWAYS_FRAG		5
+#define SQUASHFS_DUPLICATE		6
+#define SQUASHFS_BIT(flag, bit)		((flag >> bit) & 1)
+#define SQUASHFS_UNCOMPRESSED_INODES(flags)	SQUASHFS_BIT(flags, SQUASHFS_NOI)
+#define SQUASHFS_UNCOMPRESSED_DATA(flags)	SQUASHFS_BIT(flags, SQUASHFS_NOD)
+#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags)	SQUASHFS_BIT(flags, SQUASHFS_NOF)
+#define SQUASHFS_NO_FRAGMENTS(flags)		SQUASHFS_BIT(flags, SQUASHFS_NO_FRAG)
+#define SQUASHFS_ALWAYS_FRAGMENTS(flags)	SQUASHFS_BIT(flags, SQUASHFS_ALWAYS_FRAG)
+#define SQUASHFS_DUPLICATES(flags)		SQUASHFS_BIT(flags, SQUASHFS_DUPLICATE)
+#define SQUASHFS_CHECK_DATA(flags)		SQUASHFS_BIT(flags, SQUASHFS_CHECK)
+#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, duplicate_checking)	(noi | (nod << 1) | (check_data << 2) | (nof << 3) | (no_frag << 4) | (always_frag << 5) | (duplicate_checking << 6))
+
+/* Max number of types and file types */
+#define SQUASHFS_DIR_TYPE		1
+#define SQUASHFS_FILE_TYPE		2
+#define SQUASHFS_SYMLINK_TYPE		3
+#define SQUASHFS_BLKDEV_TYPE		4
+#define SQUASHFS_CHRDEV_TYPE		5
+#define SQUASHFS_FIFO_TYPE		6
+#define SQUASHFS_SOCKET_TYPE		7
+#define SQUASHFS_LDIR_TYPE		8
+
+/* 1.0 filesystem type definitions */
+#define SQUASHFS_TYPES			5
+#define SQUASHFS_IPC_TYPE		0
+
+/* Flag whether block is compressed or uncompressed, bit is set if block is uncompressed */
+#define SQUASHFS_COMPRESSED_BIT		(1 << 15)
+#define SQUASHFS_COMPRESSED_SIZE(B)	(((B) & ~SQUASHFS_COMPRESSED_BIT) ? \
+					(B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT)
+
+#define SQUASHFS_COMPRESSED(B)		(!((B) & SQUASHFS_COMPRESSED_BIT))
+
+#define SQUASHFS_COMPRESSED_BIT_BLOCK		(1 << 24)
+#define SQUASHFS_COMPRESSED_SIZE_BLOCK(B)	(((B) & ~SQUASHFS_COMPRESSED_BIT_BLOCK) ? \
+					(B) & ~SQUASHFS_COMPRESSED_BIT_BLOCK : SQUASHFS_COMPRESSED_BIT_BLOCK)
+
+#define SQUASHFS_COMPRESSED_BLOCK(B)		(!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK))
+
+/*
+ * Inode number ops.  Inodes consist of a compressed block number, and an uncompressed
+ * offset within that block
+ */
+#define SQUASHFS_INODE_BLK(a)		((unsigned int) ((a) >> 16))
+#define SQUASHFS_INODE_OFFSET(a)	((unsigned int) ((a) & 0xffff))
+#define SQUASHFS_MKINODE(A, B)		((squashfs_inode)(((squashfs_inode) (A) << 16)\
+					+ (B)))
+
+/* Compute 32 bit VFS inode number from squashfs inode number */
+#define SQUASHFS_MK_VFS_INODE(a, b)	((unsigned int) (((a) << 8) + ((b) >> 2) + 1))
+
+/* Translate between VFS mode and squashfs mode */
+#define SQUASHFS_MODE(a)		((a) & 0xfff)
+
+/* fragment and fragment table defines */
+typedef unsigned int			squashfs_fragment_index;
+#define SQUASHFS_FRAGMENT_BYTES(A)	(A * sizeof(squashfs_fragment_entry))
+#define SQUASHFS_FRAGMENT_INDEX(A)	(SQUASHFS_FRAGMENT_BYTES(A) / SQUASHFS_METADATA_SIZE)
+#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A)	(SQUASHFS_FRAGMENT_BYTES(A) % SQUASHFS_METADATA_SIZE)
+#define SQUASHFS_FRAGMENT_INDEXES(A)	((SQUASHFS_FRAGMENT_BYTES(A) + SQUASHFS_METADATA_SIZE - 1) / SQUASHFS_METADATA_SIZE)
+#define SQUASHFS_FRAGMENT_INDEX_BYTES(A)	(SQUASHFS_FRAGMENT_INDEXES(A) * sizeof(squashfs_fragment_index))
+
+/* cached data constants for filesystem */
+#define SQUASHFS_CACHED_BLKS		8
+
+#define SQUASHFS_MAX_FILE_SIZE_LOG	32
+#define SQUASHFS_MAX_FILE_SIZE		((long long) 1 << (SQUASHFS_MAX_FILE_SIZE_LOG - 1))
+
+#define SQUASHFS_MARKER_BYTE		0xff
+
+
+/*
+ * definitions for structures on disk
+ */
+
+typedef unsigned int		squashfs_block;
+typedef long long		squashfs_inode;
+
+typedef unsigned int		squashfs_uid;
+
+typedef struct squashfs_super_block {
+	unsigned int		s_magic;
+	unsigned int		inodes;
+	unsigned int		bytes_used;
+	unsigned int		uid_start;
+	unsigned int		guid_start;
+	unsigned int		inode_table_start;
+	unsigned int		directory_table_start;
+	unsigned int		s_major:16;
+	unsigned int		s_minor:16;
+	unsigned int		block_size_1:16;
+	unsigned int		block_log:16;
+	unsigned int		flags:8;
+	unsigned int		no_uids:8;
+	unsigned int		no_guids:8;
+	unsigned int		mkfs_time /* time of filesystem creation */;
+	squashfs_inode		root_inode;
+	unsigned int		block_size;
+	unsigned int		fragments;
+	unsigned int		fragment_table_start;
+} __attribute__ ((packed)) squashfs_super_block;
+
+typedef struct {
+	unsigned int		index:27;
+	unsigned int		start_block:29;
+	unsigned char		size;
+	unsigned char		name[0];
+} __attribute__ ((packed)) squashfs_dir_index;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:8; /* index into uid table */
+	unsigned int		guid:8; /* index into guid table */
+} __attribute__ ((packed)) squashfs_base_inode_header;
+
+typedef squashfs_base_inode_header squashfs_ipc_inode_header;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:8; /* index into uid table */
+	unsigned int		guid:8; /* index into guid table */
+	unsigned short		rdev;
+} __attribute__ ((packed)) squashfs_dev_inode_header;
+	
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:8; /* index into uid table */
+	unsigned int		guid:8; /* index into guid table */
+	unsigned short		symlink_size;
+	char			symlink[0];
+} __attribute__ ((packed)) squashfs_symlink_inode_header;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:8; /* index into uid table */
+	unsigned int		guid:8; /* index into guid table */
+	unsigned int		mtime;
+	squashfs_block		start_block;
+	unsigned int		fragment;
+	unsigned int		offset;
+	unsigned int		file_size:SQUASHFS_MAX_FILE_SIZE_LOG;
+	unsigned short		block_list[0];
+} __attribute__ ((packed)) squashfs_reg_inode_header;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:8; /* index into uid table */
+	unsigned int		guid:8; /* index into guid table */
+	unsigned int		file_size:19;
+	unsigned int		offset:13;
+	unsigned int		mtime;
+	unsigned int		start_block:24;
+} __attribute__  ((packed)) squashfs_dir_inode_header;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:8; /* index into uid table */
+	unsigned int		guid:8; /* index into guid table */
+	unsigned int		file_size:27;
+	unsigned int		offset:13;
+	unsigned int		mtime;
+	unsigned int		start_block:24;
+	unsigned int		i_count:16;
+	squashfs_dir_index	index[0];
+} __attribute__  ((packed)) squashfs_ldir_inode_header;
+
+typedef union {
+	squashfs_base_inode_header	base;
+	squashfs_dev_inode_header	dev;
+	squashfs_symlink_inode_header	symlink;
+	squashfs_reg_inode_header	reg;
+	squashfs_dir_inode_header	dir;
+	squashfs_ldir_inode_header	ldir;
+	squashfs_ipc_inode_header	ipc;
+} squashfs_inode_header;
+	
+typedef struct {
+	unsigned int		offset:13;
+	unsigned int		type:3;
+	unsigned int		size:8;
+	char			name[0];
+} __attribute__ ((packed)) squashfs_dir_entry;
+
+typedef struct {
+	unsigned int		count:8;
+	unsigned int		start_block:24;
+} __attribute__ ((packed)) squashfs_dir_header;
+
+typedef struct {
+	unsigned int		start_block;
+	unsigned int		size;
+} __attribute__ ((packed)) squashfs_fragment_entry;
+
+extern int squashfs_uncompress_block(void *d, int dstlen, void *s, int srclen);
+extern int squashfs_uncompress_init(void);
+extern int squashfs_uncompress_exit(void);
+
+/*
+ * macros to convert each packed bitfield structure from little endian to big
+ * endian and vice versa.  These are needed when creating or using a filesystem on a
+ * machine with different byte ordering to the target architecture.
+ *
+ */
+
+#define SQUASHFS_SWAP_SUPER_BLOCK(s, d) {\
+	SQUASHFS_MEMSET(s, d, sizeof(squashfs_super_block));\
+	SQUASHFS_SWAP((s)->s_magic, d, 0, 32);\
+	SQUASHFS_SWAP((s)->inodes, d, 32, 32);\
+	SQUASHFS_SWAP((s)->bytes_used, d, 64, 32);\
+	SQUASHFS_SWAP((s)->uid_start, d, 96, 32);\
+	SQUASHFS_SWAP((s)->guid_start, d, 128, 32);\
+	SQUASHFS_SWAP((s)->inode_table_start, d, 160, 32);\
+	SQUASHFS_SWAP((s)->directory_table_start, d, 192, 32);\
+	SQUASHFS_SWAP((s)->s_major, d, 224, 16);\
+	SQUASHFS_SWAP((s)->s_minor, d, 240, 16);\
+	SQUASHFS_SWAP((s)->block_size_1, d, 256, 16);\
+	SQUASHFS_SWAP((s)->block_log, d, 272, 16);\
+	SQUASHFS_SWAP((s)->flags, d, 288, 8);\
+	SQUASHFS_SWAP((s)->no_uids, d, 296, 8);\
+	SQUASHFS_SWAP((s)->no_guids, d, 304, 8);\
+	SQUASHFS_SWAP((s)->mkfs_time, d, 312, 32);\
+	SQUASHFS_SWAP((s)->root_inode, d, 344, 64);\
+	SQUASHFS_SWAP((s)->block_size, d, 408, 32);\
+	SQUASHFS_SWAP((s)->fragments, d, 440, 32);\
+	SQUASHFS_SWAP((s)->fragment_table_start, d, 472, 32);\
+}
+
+#define SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, n) {\
+	SQUASHFS_MEMSET(s, d, n);\
+	SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\
+	SQUASHFS_SWAP((s)->mode, d, 4, 12);\
+	SQUASHFS_SWAP((s)->uid, d, 16, 8);\
+	SQUASHFS_SWAP((s)->guid, d, 24, 8);\
+}
+
+#define SQUASHFS_SWAP_IPC_INODE_HEADER(s, d) SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_ipc_inode_header))
+
+#define SQUASHFS_SWAP_DEV_INODE_HEADER(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dev_inode_header));\
+	SQUASHFS_SWAP((s)->rdev, d, 32, 16);\
+}
+
+#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_symlink_inode_header));\
+	SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\
+}
+
+#define SQUASHFS_SWAP_REG_INODE_HEADER(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_reg_inode_header));\
+	SQUASHFS_SWAP((s)->mtime, d, 32, 32);\
+	SQUASHFS_SWAP((s)->start_block, d, 64, 32);\
+	SQUASHFS_SWAP((s)->fragment, d, 96, 32);\
+	SQUASHFS_SWAP((s)->offset, d, 128, 32);\
+	SQUASHFS_SWAP((s)->file_size, d, 160, SQUASHFS_MAX_FILE_SIZE_LOG);\
+}
+
+#define SQUASHFS_SWAP_DIR_INODE_HEADER(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dir_inode_header));\
+	SQUASHFS_SWAP((s)->file_size, d, 32, 19);\
+	SQUASHFS_SWAP((s)->offset, d, 51, 13);\
+	SQUASHFS_SWAP((s)->mtime, d, 64, 32);\
+	SQUASHFS_SWAP((s)->start_block, d, 96, 24);\
+}
+
+#define SQUASHFS_SWAP_LDIR_INODE_HEADER(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_ldir_inode_header));\
+	SQUASHFS_SWAP((s)->file_size, d, 32, 27);\
+	SQUASHFS_SWAP((s)->offset, d, 59, 13);\
+	SQUASHFS_SWAP((s)->mtime, d, 72, 32);\
+	SQUASHFS_SWAP((s)->start_block, d, 104, 24);\
+	SQUASHFS_SWAP((s)->i_count, d, 128, 16);\
+}
+
+#define SQUASHFS_SWAP_DIR_INDEX(s, d) {\
+	SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_index));\
+	SQUASHFS_SWAP((s)->index, d, 0, 27);\
+	SQUASHFS_SWAP((s)->start_block, d, 27, 29);\
+	SQUASHFS_SWAP((s)->size, d, 56, 8);\
+}
+
+#define SQUASHFS_SWAP_DIR_HEADER(s, d) {\
+	SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_header));\
+	SQUASHFS_SWAP((s)->count, d, 0, 8);\
+	SQUASHFS_SWAP((s)->start_block, d, 8, 24);\
+}
+
+#define SQUASHFS_SWAP_DIR_ENTRY(s, d) {\
+	SQUASHFS_MEMSET(s, d, sizeof(squashfs_dir_entry));\
+	SQUASHFS_SWAP((s)->offset, d, 0, 13);\
+	SQUASHFS_SWAP((s)->type, d, 13, 3);\
+	SQUASHFS_SWAP((s)->size, d, 16, 8);\
+}
+
+#define SQUASHFS_SWAP_FRAGMENT_ENTRY(s, d) {\
+	SQUASHFS_MEMSET(s, d, sizeof(squashfs_fragment_entry));\
+	SQUASHFS_SWAP((s)->start_block, d, 0, 32);\
+	SQUASHFS_SWAP((s)->size, d, 32, 32);\
+}
+
+#define SQUASHFS_SWAP_SHORTS(s, d, n) {\
+	int entry;\
+	int bit_position;\
+	SQUASHFS_MEMSET(s, d, n * 2);\
+	for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += 16)\
+		SQUASHFS_SWAP(s[entry], d, bit_position, 16);\
+}
+
+#define SQUASHFS_SWAP_INTS(s, d, n) {\
+	int entry;\
+	int bit_position;\
+	SQUASHFS_MEMSET(s, d, n * 4);\
+	for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += 32)\
+		SQUASHFS_SWAP(s[entry], d, bit_position, 32);\
+}
+
+#define SQUASHFS_SWAP_DATA(s, d, n, bits) {\
+	int entry;\
+	int bit_position;\
+	SQUASHFS_MEMSET(s, d, n * bits / 8);\
+	for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += bits)\
+		SQUASHFS_SWAP(s[entry], d, bit_position, bits);\
+}
+
+#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_INTS(s, d, n)
+
+#ifdef SQUASHFS_1_0_COMPATIBILITY
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:4; /* index into uid table */
+	unsigned int		guid:4; /* index into guid table */
+} __attribute__ ((packed)) squashfs_base_inode_header_1;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:4; /* index into uid table */
+	unsigned int		guid:4; /* index into guid table */
+	unsigned int		type:4;
+	unsigned int		offset:4;
+} __attribute__ ((packed)) squashfs_ipc_inode_header_1;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:4; /* index into uid table */
+	unsigned int		guid:4; /* index into guid table */
+	unsigned short		rdev;
+} __attribute__ ((packed)) squashfs_dev_inode_header_1;
+	
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:4; /* index into uid table */
+	unsigned int		guid:4; /* index into guid table */
+	unsigned short		symlink_size;
+	char			symlink[0];
+} __attribute__ ((packed)) squashfs_symlink_inode_header_1;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:4; /* index into uid table */
+	unsigned int		guid:4; /* index into guid table */
+	unsigned int		mtime;
+	squashfs_block		start_block;
+	unsigned int		file_size:SQUASHFS_MAX_FILE_SIZE_LOG;
+	unsigned short		block_list[0];
+} __attribute__ ((packed)) squashfs_reg_inode_header_1;
+
+typedef struct {
+	unsigned int		inode_type:4;
+	unsigned int		mode:12; /* protection */
+	unsigned int		uid:4; /* index into uid table */
+	unsigned int		guid:4; /* index into guid table */
+	unsigned int		file_size:19;
+	unsigned int		offset:13;
+	unsigned int		mtime;
+	unsigned int		start_block:24;
+} __attribute__  ((packed)) squashfs_dir_inode_header_1;
+
+#define SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, n) {\
+	SQUASHFS_MEMSET(s, d, n);\
+	SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\
+	SQUASHFS_SWAP((s)->mode, d, 4, 12);\
+	SQUASHFS_SWAP((s)->uid, d, 16, 4);\
+	SQUASHFS_SWAP((s)->guid, d, 20, 4);\
+}
+
+#define SQUASHFS_SWAP_IPC_INODE_HEADER_1(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, sizeof(squashfs_ipc_inode_header_1));\
+	SQUASHFS_SWAP((s)->type, d, 24, 4);\
+	SQUASHFS_SWAP((s)->offset, d, 28, 4);\
+}
+
+#define SQUASHFS_SWAP_DEV_INODE_HEADER_1(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, sizeof(squashfs_dev_inode_header_1));\
+	SQUASHFS_SWAP((s)->rdev, d, 24, 16);\
+}
+
+#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_symlink_inode_header_1));\
+	SQUASHFS_SWAP((s)->symlink_size, d, 24, 16);\
+}
+
+#define SQUASHFS_SWAP_REG_INODE_HEADER_1(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_reg_inode_header_1));\
+	SQUASHFS_SWAP((s)->mtime, d, 24, 32);\
+	SQUASHFS_SWAP((s)->start_block, d, 56, 32);\
+	SQUASHFS_SWAP((s)->file_size, d, 88, SQUASHFS_MAX_FILE_SIZE_LOG);\
+}
+
+#define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\
+	SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, sizeof(squashfs_dir_inode_header_1));\
+	SQUASHFS_SWAP((s)->file_size, d, 24, 19);\
+	SQUASHFS_SWAP((s)->offset, d, 43, 13);\
+	SQUASHFS_SWAP((s)->mtime, d, 56, 32);\
+	SQUASHFS_SWAP((s)->start_block, d, 88, 24);\
+}
+#endif
+
+#ifdef __KERNEL__
+/*
+ * macros used to swap each structure entry, taking into account
+ * bitfields and different bitfield placing conventions on differing architectures
+ */
+#include <asm/byteorder.h>
+#ifdef __BIG_ENDIAN
+	/* convert from little endian to big endian */
+#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, tbits, b_pos)
+#else
+	/* convert from big endian to little endian */ 
+#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, tbits, 64 - tbits - b_pos)
+#endif
+
+#define _SQUASHFS_SWAP(value, p, pos, tbits, SHIFT) {\
+	int bits;\
+	int b_pos = pos % 8;\
+	unsigned long long val = 0;\
+	unsigned char *s = (unsigned char *)p + (pos / 8);\
+	unsigned char *d = ((unsigned char *) &val) + 7;\
+	for(bits = 0; bits < (tbits + b_pos); bits += 8) \
+		*d-- = *s++;\
+	value = (val >> (SHIFT))/* & ((1 << tbits) - 1)*/;\
+}
+#define SQUASHFS_MEMSET(s, d, n)	memset(s, 0, n);
+#endif
+#endif
diff --new-file -urp linux-2.4.31/include/linux/squashfs_fs_i.h linux-2.4.31-squashfs2.2/include/linux/squashfs_fs_i.h
--- linux-2.4.31/include/linux/squashfs_fs_i.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.31-squashfs2.2/include/linux/squashfs_fs_i.h	2005-07-04 02:28:51.000000000 +0100
@@ -0,0 +1,42 @@
+#ifndef SQUASHFS_FS_I
+#define SQUASHFS_FS_I
+/*
+ * Squashfs
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * squashfs_fs_i.h
+ */
+
+typedef struct squashfs_inode_info {
+	unsigned int	start_block;
+	unsigned int	block_list_start;
+	unsigned int	offset;
+	union {
+		struct {
+			unsigned int	fragment_start_block;
+			unsigned int	fragment_size;
+			unsigned int	fragment_offset;
+		} s1;
+		struct {
+			unsigned int	directory_index_start;
+			unsigned int	directory_index_offset;
+			unsigned int	directory_index_count;
+		} s2;
+	} u;
+	} squashfs_inode_info;
+#endif
diff --new-file -urp linux-2.4.31/include/linux/squashfs_fs_sb.h linux-2.4.31-squashfs2.2/include/linux/squashfs_fs_sb.h
--- linux-2.4.31/include/linux/squashfs_fs_sb.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.4.31-squashfs2.2/include/linux/squashfs_fs_sb.h	2005-07-04 02:28:51.000000000 +0100
@@ -0,0 +1,65 @@
+#ifndef SQUASHFS_FS_SB
+#define SQUASHFS_FS_SB
+/*
+ * Squashfs
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005 Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * squashfs_fs_sb.h
+ */
+
+#include <linux/squashfs_fs.h>
+
+typedef struct {
+	unsigned int	block;
+	int		length;
+	unsigned int	next_index;
+	char		*data;
+	} squashfs_cache;
+
+struct squashfs_fragment_cache {
+	unsigned int	block;
+	int		length;
+	unsigned int	locked;
+	char		*data;
+	};
+
+typedef struct squashfs_sb_info {
+	squashfs_super_block	sBlk;
+	int			devblksize;
+	int			devblksize_log2;
+	int			swap;
+	squashfs_cache		*block_cache;
+	struct squashfs_fragment_cache	*fragment;
+	int			next_cache;
+	int			next_fragment;
+	squashfs_uid		*uid;
+	squashfs_uid		*guid;
+	squashfs_fragment_index		*fragment_index;
+	unsigned int		read_size;
+	char			*read_data;
+	char			*read_page;
+	struct semaphore	read_page_mutex;
+	struct semaphore	block_cache_mutex;
+	struct semaphore	fragment_mutex;
+	wait_queue_head_t	waitq;
+	wait_queue_head_t	fragment_wait_queue;
+	struct inode		*(*iget)(struct super_block *s, squashfs_inode inode);
+	unsigned int		(*read_blocklist)(struct inode *inode, int index, int readahead_blks,
+					char *block_list, unsigned short **block_p, unsigned int *bsize);
+	} squashfs_sb_info;
+#endif
diff --new-file -urp linux-2.4.31/init/do_mounts.c linux-2.4.31-squashfs2.2/init/do_mounts.c
--- linux-2.4.31/init/do_mounts.c	2003-11-28 18:26:21.000000000 +0000
+++ linux-2.4.31-squashfs2.2/init/do_mounts.c	2005-07-04 02:28:51.000000000 +0100
@@ -15,6 +15,7 @@
 #include <linux/minix_fs.h>
 #include <linux/ext2_fs.h>
 #include <linux/romfs_fs.h>
+#include <linux/squashfs_fs.h>
 #include <linux/cramfs_fs.h>
 
 #define BUILD_CRAMDISK
@@ -476,6 +477,7 @@ static int __init crd_load(int in_fd, in
  * 	minix
  * 	ext2
  *	romfs
+ * 	squashfs
  *	cramfs
  * 	gzip
  */
@@ -486,6 +488,7 @@ identify_ramdisk_image(int fd, int start
 	struct minix_super_block *minixsb;
 	struct ext2_super_block *ext2sb;
 	struct romfs_super_block *romfsb;
+ 	struct squashfs_super_block *squashfsb;
 	struct cramfs_super *cramfsb;
 	int nblocks = -1;
 	unsigned char *buf;
@@ -497,6 +500,7 @@ identify_ramdisk_image(int fd, int start
 	minixsb = (struct minix_super_block *) buf;
 	ext2sb = (struct ext2_super_block *) buf;
 	romfsb = (struct romfs_super_block *) buf;
+ 	squashfsb = (struct squashfs_super_block *) buf;
 	cramfsb = (struct cramfs_super *) buf;
 	memset(buf, 0xe5, size);
 
@@ -535,6 +539,15 @@ identify_ramdisk_image(int fd, int start
 		goto done;
 	}
 
+	/* squashfs is at block zero too */
+	if (squashfsb->s_magic == SQUASHFS_MAGIC) {
+		printk(KERN_NOTICE
+		       "RAMDISK: squashfs filesystem found at block %d\n",
+		       start_block);
+		nblocks = (squashfsb->bytes_used+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS;
+		goto done;
+	}
+
 	/*
 	 * Read block 1 to test for minix and ext2 superblock
 	 */
diff --new-file -urp linux-2.4.31/lib/Config.in linux-2.4.31-squashfs2.2/lib/Config.in
--- linux-2.4.31/lib/Config.in	2003-11-28 18:26:21.000000000 +0000
+++ linux-2.4.31-squashfs2.2/lib/Config.in	2005-07-04 02:28:51.000000000 +0100
@@ -10,6 +10,7 @@ tristate 'CRC32 functions' CONFIG_CRC32
 # Do we need the compression support?
 #
 if [ "$CONFIG_CRAMFS" = "y" -o \
+     "$CONFIG_SQUASHFS" = "y" -o \
      "$CONFIG_PPP_DEFLATE" = "y" -o \
      "$CONFIG_CRYPTO_DEFLATE" = "y" -o \
      "$CONFIG_JFFS2_FS" = "y" -o \
@@ -17,6 +18,7 @@ if [ "$CONFIG_CRAMFS" = "y" -o \
    define_tristate CONFIG_ZLIB_INFLATE y
 else
   if [ "$CONFIG_CRAMFS" = "m" -o \
+       "$CONFIG_SQUASHFS" = "m" -o \
        "$CONFIG_PPP_DEFLATE" = "m" -o \
        "$CONFIG_CRYPTO_DEFLATE" = "m" -o \
        "$CONFIG_JFFS2_FS" = "m" -o \