wok-stable diff linux/stuff/linux-squashfs-lzma-2.6.34.u @ rev 5640
Up: linux (2.6.34) Add new drivers, clean-up receipt and stuff, fix linux-video build
| author | Christophe Lincoln <pankso@slitaz.org> |
|---|---|
| date | Fri May 28 21:08:44 2010 +0200 (2010-05-28) |
| parents | |
| children | 0c80e5eb512d |
line diff
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/linux/stuff/linux-squashfs-lzma-2.6.34.u Fri May 28 21:08:44 2010 +0200 1.3 @@ -0,0 +1,1624 @@ 1.4 +--- linux-2.6.30.6/fs/squashfs/Kconfig 1.5 ++++ linux-2.6.30.6/fs/squashfs/Kconfig 1.6 +@@ -26,6 +26,12 @@ 1.7 + 1.8 + If unsure, say N. 1.9 + 1.10 ++config SQUASHFS_LZMA 1.11 ++ bool "Include support for LZMA compressed file systems" 1.12 ++ depends on SQUASHFS 1.13 ++ select DECOMPRESS_LZMA 1.14 ++ select DECOMPRESS_LZMA_NEEDED 1.15 ++ 1.16 + config SQUASHFS_EMBEDDED 1.17 + 1.18 + bool "Additional option for memory-constrained systems" 1.19 + 1.20 +--- linux-2.6.30.6/fs/squashfs/Makefile 1.21 ++++ linux-2.6.30.6/fs/squashfs/Makefile 1.22 +@@ -4,4 +4,5 @@ 1.23 + 1.24 + obj-$(CONFIG_SQUASHFS) += squashfs.o 1.25 + squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o 1.26 +-squashfs-y += namei.o super.o symlink.o 1.27 ++squashfs-y += namei.o super.o symlink.o zlib_wrapper.o decompressor.o 1.28 ++squashfs-$(CONFIG_SQUASHFS_LZMA) += lzma_wrapper.o 1.29 + 1.30 +--- linux-2.6.30.6/fs/squashfs/block.c 1.31 ++++ linux-2.6.30.6/fs/squashfs/block.c 1.32 +@@ -29,15 +29,14 @@ 1.33 + #include <linux/fs.h> 1.34 + #include <linux/vfs.h> 1.35 + #include <linux/slab.h> 1.36 +-#include <linux/mutex.h> 1.37 + #include <linux/string.h> 1.38 + #include <linux/buffer_head.h> 1.39 +-#include <linux/zlib.h> 1.40 + 1.41 + #include "squashfs_fs.h" 1.42 + #include "squashfs_fs_sb.h" 1.43 + #include "squashfs_fs_i.h" 1.44 + #include "squashfs.h" 1.45 ++#include "decompressor.h" 1.46 + 1.47 + /* 1.48 + * Read the metadata block length, this is stored in the first two 1.49 +@@ -153,72 +152,10 @@ 1.50 + } 1.51 + 1.52 + if (compressed) { 1.53 +- int zlib_err = 0, zlib_init = 0; 1.54 +- 1.55 +- /* 1.56 +- * Uncompress block. 1.57 +- */ 1.58 +- 1.59 +- mutex_lock(&msblk->read_data_mutex); 1.60 +- 1.61 +- msblk->stream.avail_out = 0; 1.62 +- msblk->stream.avail_in = 0; 1.63 +- 1.64 +- bytes = length; 1.65 +- do { 1.66 +- if (msblk->stream.avail_in == 0 && k < b) { 1.67 +- avail = min(bytes, msblk->devblksize - offset); 1.68 +- bytes -= avail; 1.69 +- wait_on_buffer(bh[k]); 1.70 +- if (!buffer_uptodate(bh[k])) 1.71 +- goto release_mutex; 1.72 +- 1.73 +- if (avail == 0) { 1.74 +- offset = 0; 1.75 +- put_bh(bh[k++]); 1.76 +- continue; 1.77 +- } 1.78 +- 1.79 +- msblk->stream.next_in = bh[k]->b_data + offset; 1.80 +- msblk->stream.avail_in = avail; 1.81 +- offset = 0; 1.82 +- } 1.83 +- 1.84 +- if (msblk->stream.avail_out == 0 && page < pages) { 1.85 +- msblk->stream.next_out = buffer[page++]; 1.86 +- msblk->stream.avail_out = PAGE_CACHE_SIZE; 1.87 +- } 1.88 +- 1.89 +- if (!zlib_init) { 1.90 +- zlib_err = zlib_inflateInit(&msblk->stream); 1.91 +- if (zlib_err != Z_OK) { 1.92 +- ERROR("zlib_inflateInit returned" 1.93 +- " unexpected result 0x%x," 1.94 +- " srclength %d\n", zlib_err, 1.95 +- srclength); 1.96 +- goto release_mutex; 1.97 +- } 1.98 +- zlib_init = 1; 1.99 +- } 1.100 +- 1.101 +- zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH); 1.102 +- 1.103 +- if (msblk->stream.avail_in == 0 && k < b) 1.104 +- put_bh(bh[k++]); 1.105 +- } while (zlib_err == Z_OK); 1.106 +- 1.107 +- if (zlib_err != Z_STREAM_END) { 1.108 +- ERROR("zlib_inflate error, data probably corrupt\n"); 1.109 +- goto release_mutex; 1.110 +- } 1.111 +- 1.112 +- zlib_err = zlib_inflateEnd(&msblk->stream); 1.113 +- if (zlib_err != Z_OK) { 1.114 +- ERROR("zlib_inflate error, data probably corrupt\n"); 1.115 +- goto release_mutex; 1.116 +- } 1.117 +- length = msblk->stream.total_out; 1.118 +- mutex_unlock(&msblk->read_data_mutex); 1.119 ++ length = squashfs_decompress(msblk, buffer, bh, b, offset, 1.120 ++ length, srclength, pages); 1.121 ++ if (length < 0) 1.122 ++ goto read_failure; 1.123 + } else { 1.124 + /* 1.125 + * Block is uncompressed. 1.126 +@@ -254,9 +191,6 @@ 1.127 + 1.128 + kfree(bh); 1.129 + return length; 1.130 +- 1.131 +-release_mutex: 1.132 +- mutex_unlock(&msblk->read_data_mutex); 1.133 + 1.134 + block_release: 1.135 + for (; k < b; k++) 1.136 + 1.137 +--- linux-2.6.30.6/fs/squashfs/cache.c 1.138 ++++ linux-2.6.30.6/fs/squashfs/cache.c 1.139 +@@ -51,7 +51,6 @@ 1.140 + #include <linux/sched.h> 1.141 + #include <linux/spinlock.h> 1.142 + #include <linux/wait.h> 1.143 +-#include <linux/zlib.h> 1.144 + #include <linux/pagemap.h> 1.145 + 1.146 + #include "squashfs_fs.h" 1.147 + 1.148 +--- linux-2.6.30.6/fs/squashfs/decompressor.c 1.149 ++++ linux-2.6.30.6/fs/squashfs/decompressor.c 1.150 +@@ -0,0 +1,72 @@ 1.151 ++/* 1.152 ++ * Squashfs - a compressed read only filesystem for Linux 1.153 ++ * 1.154 ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 1.155 ++ * Phillip Lougher <phillip@lougher.demon.co.uk> 1.156 ++ * 1.157 ++ * This program is free software; you can redistribute it and/or 1.158 ++ * modify it under the terms of the GNU General Public License 1.159 ++ * as published by the Free Software Foundation; either version 2, 1.160 ++ * or (at your option) any later version. 1.161 ++ * 1.162 ++ * This program is distributed in the hope that it will be useful, 1.163 ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of 1.164 ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1.165 ++ * GNU General Public License for more details. 1.166 ++ * 1.167 ++ * You should have received a copy of the GNU General Public License 1.168 ++ * along with this program; if not, write to the Free Software 1.169 ++ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 1.170 ++ * 1.171 ++ * decompressor.c 1.172 ++ */ 1.173 ++ 1.174 ++#include <linux/types.h> 1.175 ++#include <linux/mutex.h> 1.176 ++#include <linux/buffer_head.h> 1.177 ++ 1.178 ++#include "squashfs_fs.h" 1.179 ++#include "squashfs_fs_sb.h" 1.180 ++#include "squashfs_fs_i.h" 1.181 ++#include "decompressor.h" 1.182 ++#include "squashfs.h" 1.183 ++ 1.184 ++/* 1.185 ++ * This file (and decompressor.h) implements a decompressor framework for 1.186 ++ * Squashfs, allowing multiple decompressors to be easily supported 1.187 ++ */ 1.188 ++ 1.189 ++static const struct squashfs_decompressor squashfs_lzma_unsupported_comp_ops = { 1.190 ++ NULL, NULL, NULL, LZMA_COMPRESSION, "lzma", 0 1.191 ++}; 1.192 ++ 1.193 ++static const struct squashfs_decompressor squashfs_lzo_unsupported_comp_ops = { 1.194 ++ NULL, NULL, NULL, LZO_COMPRESSION, "lzo", 0 1.195 ++}; 1.196 ++ 1.197 ++static const struct squashfs_decompressor squashfs_unknown_comp_ops = { 1.198 ++ NULL, NULL, NULL, 0, "unknown", 0 1.199 ++}; 1.200 ++ 1.201 ++static const struct squashfs_decompressor *decompressor[] = { 1.202 ++ &squashfs_zlib_comp_ops, 1.203 ++#ifdef CONFIG_SQUASHFS_LZMA 1.204 ++ &squashfs_lzma_comp_ops, 1.205 ++#else 1.206 ++ &squashfs_lzma_unsupported_comp_ops, 1.207 ++#endif 1.208 ++ &squashfs_lzo_unsupported_comp_ops, 1.209 ++ &squashfs_unknown_comp_ops 1.210 ++}; 1.211 ++ 1.212 ++ 1.213 ++const struct squashfs_decompressor *squashfs_lookup_decompressor(int id) 1.214 ++{ 1.215 ++ int i; 1.216 ++ 1.217 ++ for (i = 0; decompressor[i]->id; i++) 1.218 ++ if (id == decompressor[i]->id) 1.219 ++ break; 1.220 ++ 1.221 ++ return decompressor[i]; 1.222 ++} 1.223 + 1.224 +--- linux-2.6.30.6/fs/squashfs/decompressor.h 1.225 ++++ linux-2.6.30.6/fs/squashfs/decompressor.h 1.226 +@@ -0,0 +1,55 @@ 1.227 ++#ifndef DECOMPRESSOR_H 1.228 ++#define DECOMPRESSOR_H 1.229 ++/* 1.230 ++ * Squashfs - a compressed read only filesystem for Linux 1.231 ++ * 1.232 ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 1.233 ++ * Phillip Lougher <phillip@lougher.demon.co.uk> 1.234 ++ * 1.235 ++ * This program is free software; you can redistribute it and/or 1.236 ++ * modify it under the terms of the GNU General Public License 1.237 ++ * as published by the Free Software Foundation; either version 2, 1.238 ++ * or (at your option) any later version. 1.239 ++ * 1.240 ++ * This program is distributed in the hope that it will be useful, 1.241 ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of 1.242 ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1.243 ++ * GNU General Public License for more details. 1.244 ++ * 1.245 ++ * You should have received a copy of the GNU General Public License 1.246 ++ * along with this program; if not, write to the Free Software 1.247 ++ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 1.248 ++ * 1.249 ++ * decompressor.h 1.250 ++ */ 1.251 ++ 1.252 ++struct squashfs_decompressor { 1.253 ++ void *(*init)(struct squashfs_sb_info *); 1.254 ++ void (*free)(void *); 1.255 ++ int (*decompress)(struct squashfs_sb_info *, void **, 1.256 ++ struct buffer_head **, int, int, int, int, int); 1.257 ++ int id; 1.258 ++ char *name; 1.259 ++ int supported; 1.260 ++}; 1.261 ++ 1.262 ++static inline void *squashfs_decompressor_init(struct squashfs_sb_info *msblk) 1.263 ++{ 1.264 ++ return msblk->decompressor->init(msblk); 1.265 ++} 1.266 ++ 1.267 ++static inline void squashfs_decompressor_free(struct squashfs_sb_info *msblk, 1.268 ++ void *s) 1.269 ++{ 1.270 ++ if (msblk->decompressor) 1.271 ++ msblk->decompressor->free(s); 1.272 ++} 1.273 ++ 1.274 ++static inline int squashfs_decompress(struct squashfs_sb_info *msblk, 1.275 ++ void **buffer, struct buffer_head **bh, int b, int offset, int length, 1.276 ++ int srclength, int pages) 1.277 ++{ 1.278 ++ return msblk->decompressor->decompress(msblk, buffer, bh, b, offset, 1.279 ++ length, srclength, pages); 1.280 ++} 1.281 ++#endif 1.282 + 1.283 +--- linux-2.6.30.6/fs/squashfs/dir.c 1.284 ++++ linux-2.6.30.6/fs/squashfs/dir.c 1.285 +@@ -30,7 +30,6 @@ 1.286 + #include <linux/fs.h> 1.287 + #include <linux/vfs.h> 1.288 + #include <linux/slab.h> 1.289 +-#include <linux/zlib.h> 1.290 + 1.291 + #include "squashfs_fs.h" 1.292 + #include "squashfs_fs_sb.h" 1.293 + 1.294 +--- linux-2.6.30.6/fs/squashfs/export.c 1.295 ++++ linux-2.6.30.6/fs/squashfs/export.c 1.296 +@@ -39,7 +39,6 @@ 1.297 + #include <linux/vfs.h> 1.298 + #include <linux/dcache.h> 1.299 + #include <linux/exportfs.h> 1.300 +-#include <linux/zlib.h> 1.301 + #include <linux/slab.h> 1.302 + 1.303 + #include "squashfs_fs.h" 1.304 + 1.305 +--- linux-2.6.30.6/fs/squashfs/file.c 1.306 ++++ linux-2.6.30.6/fs/squashfs/file.c 1.307 +@@ -47,7 +47,6 @@ 1.308 + #include <linux/string.h> 1.309 + #include <linux/pagemap.h> 1.310 + #include <linux/mutex.h> 1.311 +-#include <linux/zlib.h> 1.312 + 1.313 + #include "squashfs_fs.h" 1.314 + #include "squashfs_fs_sb.h" 1.315 + 1.316 +--- linux-2.6.30.6/fs/squashfs/fragment.c 1.317 ++++ linux-2.6.30.6/fs/squashfs/fragment.c 1.318 +@@ -36,7 +36,6 @@ 1.319 + #include <linux/fs.h> 1.320 + #include <linux/vfs.h> 1.321 + #include <linux/slab.h> 1.322 +-#include <linux/zlib.h> 1.323 + 1.324 + #include "squashfs_fs.h" 1.325 + #include "squashfs_fs_sb.h" 1.326 + 1.327 +--- linux-2.6.30.6/fs/squashfs/id.c 1.328 ++++ linux-2.6.30.6/fs/squashfs/id.c 1.329 +@@ -34,7 +34,6 @@ 1.330 + #include <linux/fs.h> 1.331 + #include <linux/vfs.h> 1.332 + #include <linux/slab.h> 1.333 +-#include <linux/zlib.h> 1.334 + 1.335 + #include "squashfs_fs.h" 1.336 + #include "squashfs_fs_sb.h" 1.337 + 1.338 +--- linux-2.6.30.6/fs/squashfs/inode.c 1.339 ++++ linux-2.6.30.6/fs/squashfs/inode.c 1.340 +@@ -40,7 +40,6 @@ 1.341 + 1.342 + #include <linux/fs.h> 1.343 + #include <linux/vfs.h> 1.344 +-#include <linux/zlib.h> 1.345 + 1.346 + #include "squashfs_fs.h" 1.347 + #include "squashfs_fs_sb.h" 1.348 + 1.349 +--- linux-2.6.30.6/fs/squashfs/lzma_wrapper.c 1.350 ++++ linux-2.6.30.6/fs/squashfs/lzma_wrapper.c 1.351 +@@ -0,0 +1,151 @@ 1.352 ++/* 1.353 ++ * Squashfs - a compressed read only filesystem for Linux 1.354 ++ * 1.355 ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 1.356 ++ * Phillip Lougher <phillip@lougher.demon.co.uk> 1.357 ++ * 1.358 ++ * This program is free software; you can redistribute it and/or 1.359 ++ * modify it under the terms of the GNU General Public License 1.360 ++ * as published by the Free Software Foundation; either version 2, 1.361 ++ * or (at your option) any later version. 1.362 ++ * 1.363 ++ * This program is distributed in the hope that it will be useful, 1.364 ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of 1.365 ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1.366 ++ * GNU General Public License for more details. 1.367 ++ * 1.368 ++ * You should have received a copy of the GNU General Public License 1.369 ++ * along with this program; if not, write to the Free Software 1.370 ++ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 1.371 ++ * 1.372 ++ * lzma_wrapper.c 1.373 ++ */ 1.374 ++ 1.375 ++#include <asm/unaligned.h> 1.376 ++#include <linux/buffer_head.h> 1.377 ++#include <linux/mutex.h> 1.378 ++#include <linux/vmalloc.h> 1.379 ++#include <linux/decompress/unlzma.h> 1.380 ++ 1.381 ++#include "squashfs_fs.h" 1.382 ++#include "squashfs_fs_sb.h" 1.383 ++#include "squashfs_fs_i.h" 1.384 ++#include "squashfs.h" 1.385 ++#include "decompressor.h" 1.386 ++ 1.387 ++struct squashfs_lzma { 1.388 ++ void *input; 1.389 ++ void *output; 1.390 ++}; 1.391 ++ 1.392 ++/* decompress_unlzma.c is currently non re-entrant... */ 1.393 ++DEFINE_MUTEX(lzma_mutex); 1.394 ++ 1.395 ++/* decompress_unlzma.c doesn't provide any context in its callbacks... */ 1.396 ++static int lzma_error; 1.397 ++ 1.398 ++static void error(char *m) 1.399 ++{ 1.400 ++ ERROR("unlzma error: %s\n", m); 1.401 ++ lzma_error = 1; 1.402 ++} 1.403 ++ 1.404 ++ 1.405 ++static void *lzma_init(struct squashfs_sb_info *msblk) 1.406 ++{ 1.407 ++ struct squashfs_lzma *stream = kzalloc(sizeof(*stream), GFP_KERNEL); 1.408 ++ if (stream == NULL) 1.409 ++ goto failed; 1.410 ++ stream->input = vmalloc(msblk->block_size); 1.411 ++ if (stream->input == NULL) 1.412 ++ goto failed; 1.413 ++ stream->output = vmalloc(msblk->block_size); 1.414 ++ if (stream->output == NULL) 1.415 ++ goto failed2; 1.416 ++ 1.417 ++ return stream; 1.418 ++ 1.419 ++failed2: 1.420 ++ vfree(stream->input); 1.421 ++failed: 1.422 ++ ERROR("failed to allocate lzma workspace\n"); 1.423 ++ kfree(stream); 1.424 ++ return NULL; 1.425 ++} 1.426 ++ 1.427 ++ 1.428 ++static void lzma_free(void *strm) 1.429 ++{ 1.430 ++ struct squashfs_lzma *stream = strm; 1.431 ++ 1.432 ++ if (stream) { 1.433 ++ vfree(stream->input); 1.434 ++ vfree(stream->output); 1.435 ++ } 1.436 ++ kfree(stream); 1.437 ++} 1.438 ++ 1.439 ++ 1.440 ++static int lzma_uncompress(struct squashfs_sb_info *msblk, void **buffer, 1.441 ++ struct buffer_head **bh, int b, int offset, int length, int srclength, 1.442 ++ int pages) 1.443 ++{ 1.444 ++ struct squashfs_lzma *stream = msblk->stream; 1.445 ++ void *buff = stream->input; 1.446 ++ int avail, i, bytes = length, res; 1.447 ++ 1.448 ++ mutex_lock(&lzma_mutex); 1.449 ++ 1.450 ++ for (i = 0; i < b; i++) { 1.451 ++ wait_on_buffer(bh[i]); 1.452 ++ if (!buffer_uptodate(bh[i])) 1.453 ++ goto block_release; 1.454 ++ 1.455 ++ avail = min(bytes, msblk->devblksize - offset); 1.456 ++ memcpy(buff, bh[i]->b_data + offset, avail); 1.457 ++ buff += avail; 1.458 ++ bytes -= avail; 1.459 ++ offset = 0; 1.460 ++ put_bh(bh[i]); 1.461 ++ } 1.462 ++ 1.463 ++ lzma_error = 0; 1.464 ++ res = unlzma(stream->input, length, NULL, NULL, stream->output, NULL, 1.465 ++ error); 1.466 ++ if (res || lzma_error) 1.467 ++ goto failed; 1.468 ++ 1.469 ++ /* uncompressed size is stored in the LZMA header (5 byte offset) */ 1.470 ++ res = bytes = get_unaligned_le32(stream->input + 5); 1.471 ++ for (i = 0, buff = stream->output; bytes && i < pages; i++) { 1.472 ++ avail = min_t(int, bytes, PAGE_CACHE_SIZE); 1.473 ++ memcpy(buffer[i], buff, avail); 1.474 ++ buff += avail; 1.475 ++ bytes -= avail; 1.476 ++ } 1.477 ++ if (bytes) 1.478 ++ goto failed; 1.479 ++ 1.480 ++ mutex_unlock(&lzma_mutex); 1.481 ++ return res; 1.482 ++ 1.483 ++block_release: 1.484 ++ for (; i < b; i++) 1.485 ++ put_bh(bh[i]); 1.486 ++ 1.487 ++failed: 1.488 ++ mutex_unlock(&lzma_mutex); 1.489 ++ 1.490 ++ ERROR("lzma decompression failed, data probably corrupt\n"); 1.491 ++ return -EIO; 1.492 ++} 1.493 ++ 1.494 ++const struct squashfs_decompressor squashfs_lzma_comp_ops = { 1.495 ++ .init = lzma_init, 1.496 ++ .free = lzma_free, 1.497 ++ .decompress = lzma_uncompress, 1.498 ++ .id = LZMA_COMPRESSION, 1.499 ++ .name = "lzma", 1.500 ++ .supported = 1 1.501 ++}; 1.502 ++ 1.503 + 1.504 +--- linux-2.6.30.6/fs/squashfs/namei.c 1.505 ++++ linux-2.6.30.6/fs/squashfs/namei.c 1.506 +@@ -57,7 +57,6 @@ 1.507 + #include <linux/slab.h> 1.508 + #include <linux/string.h> 1.509 + #include <linux/dcache.h> 1.510 +-#include <linux/zlib.h> 1.511 + 1.512 + #include "squashfs_fs.h" 1.513 + #include "squashfs_fs_sb.h" 1.514 + 1.515 +--- linux-2.6.30.6/fs/squashfs/squashfs.h 1.516 ++++ linux-2.6.30.6/fs/squashfs/squashfs.h 1.517 +@@ -51,6 +51,9 @@ 1.518 + u64, int); 1.519 + extern int squashfs_read_table(struct super_block *, void *, u64, int); 1.520 + 1.521 ++/* decompressor.c */ 1.522 ++extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int); 1.523 ++ 1.524 + /* export.c */ 1.525 + extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, 1.526 + unsigned int); 1.527 +@@ -71,7 +74,7 @@ 1.528 + extern int squashfs_read_inode(struct inode *, long long); 1.529 + 1.530 + /* 1.531 +- * Inodes and files operations 1.532 ++ * Inodes, files and decompressor operations 1.533 + */ 1.534 + 1.535 + /* dir.c */ 1.536 +@@ -88,3 +91,9 @@ 1.537 + 1.538 + /* symlink.c */ 1.539 + extern const struct address_space_operations squashfs_symlink_aops; 1.540 ++ 1.541 ++/* zlib_wrapper.c */ 1.542 ++extern const struct squashfs_decompressor squashfs_zlib_comp_ops; 1.543 ++ 1.544 ++/* lzma wrapper.c */ 1.545 ++extern const struct squashfs_decompressor squashfs_lzma_comp_ops; 1.546 + 1.547 +--- linux-2.6.30.6/fs/squashfs/squashfs_fs.h 1.548 ++++ linux-2.6.30.6/fs/squashfs/squashfs_fs.h 1.549 +@@ -211,7 +211,9 @@ 1.550 + /* 1.551 + * definitions for structures on disk 1.552 + */ 1.553 +-#define ZLIB_COMPRESSION 1 1.554 ++#define ZLIB_COMPRESSION 1 1.555 ++#define LZMA_COMPRESSION 2 1.556 ++#define LZO_COMPRESSION 3 1.557 + 1.558 + struct squashfs_super_block { 1.559 + __le32 s_magic; 1.560 + 1.561 +--- linux-2.6.30.6/fs/squashfs/squashfs_fs_sb.h 1.562 ++++ linux-2.6.30.6/fs/squashfs/squashfs_fs_sb.h 1.563 +@@ -52,25 +52,26 @@ 1.564 + }; 1.565 + 1.566 + struct squashfs_sb_info { 1.567 +- int devblksize; 1.568 +- int devblksize_log2; 1.569 +- struct squashfs_cache *block_cache; 1.570 +- struct squashfs_cache *fragment_cache; 1.571 +- struct squashfs_cache *read_page; 1.572 +- int next_meta_index; 1.573 +- __le64 *id_table; 1.574 +- __le64 *fragment_index; 1.575 +- unsigned int *fragment_index_2; 1.576 +- struct mutex read_data_mutex; 1.577 +- struct mutex meta_index_mutex; 1.578 +- struct meta_index *meta_index; 1.579 +- z_stream stream; 1.580 +- __le64 *inode_lookup_table; 1.581 +- u64 inode_table; 1.582 +- u64 directory_table; 1.583 +- unsigned int block_size; 1.584 +- unsigned short block_log; 1.585 +- long long bytes_used; 1.586 +- unsigned int inodes; 1.587 ++ const struct squashfs_decompressor *decompressor; 1.588 ++ int devblksize; 1.589 ++ int devblksize_log2; 1.590 ++ struct squashfs_cache *block_cache; 1.591 ++ struct squashfs_cache *fragment_cache; 1.592 ++ struct squashfs_cache *read_page; 1.593 ++ int next_meta_index; 1.594 ++ __le64 *id_table; 1.595 ++ __le64 *fragment_index; 1.596 ++ unsigned int *fragment_index_2; 1.597 ++ struct mutex read_data_mutex; 1.598 ++ struct mutex meta_index_mutex; 1.599 ++ struct meta_index *meta_index; 1.600 ++ void *stream; 1.601 ++ __le64 *inode_lookup_table; 1.602 ++ u64 inode_table; 1.603 ++ u64 directory_table; 1.604 ++ unsigned int block_size; 1.605 ++ unsigned short block_log; 1.606 ++ long long bytes_used; 1.607 ++ unsigned int inodes; 1.608 + }; 1.609 + #endif 1.610 + 1.611 +--- linux-2.6.30.6/fs/squashfs/super.c 1.612 ++++ linux-2.6.30.6/fs/squashfs/super.c 1.613 +@@ -30,38 +30,46 @@ 1.614 + #include <linux/fs.h> 1.615 + #include <linux/vfs.h> 1.616 + #include <linux/slab.h> 1.617 ++#include <linux/smp_lock.h> 1.618 + #include <linux/mutex.h> 1.619 + #include <linux/pagemap.h> 1.620 + #include <linux/init.h> 1.621 + #include <linux/module.h> 1.622 +-#include <linux/zlib.h> 1.623 + #include <linux/magic.h> 1.624 + 1.625 + #include "squashfs_fs.h" 1.626 + #include "squashfs_fs_sb.h" 1.627 + #include "squashfs_fs_i.h" 1.628 + #include "squashfs.h" 1.629 ++#include "decompressor.h" 1.630 + 1.631 + static struct file_system_type squashfs_fs_type; 1.632 +-static struct super_operations squashfs_super_ops; 1.633 ++static const struct super_operations squashfs_super_ops; 1.634 + 1.635 +-static int supported_squashfs_filesystem(short major, short minor, short comp) 1.636 ++static const struct squashfs_decompressor *supported_squashfs_filesystem(short 1.637 ++ major, short minor, short id) 1.638 + { 1.639 ++ const struct squashfs_decompressor *decompressor; 1.640 ++ 1.641 + if (major < SQUASHFS_MAJOR) { 1.642 + ERROR("Major/Minor mismatch, older Squashfs %d.%d " 1.643 + "filesystems are unsupported\n", major, minor); 1.644 +- return -EINVAL; 1.645 ++ return NULL; 1.646 + } else if (major > SQUASHFS_MAJOR || minor > SQUASHFS_MINOR) { 1.647 + ERROR("Major/Minor mismatch, trying to mount newer " 1.648 + "%d.%d filesystem\n", major, minor); 1.649 + ERROR("Please update your kernel\n"); 1.650 +- return -EINVAL; 1.651 ++ return NULL; 1.652 + } 1.653 + 1.654 +- if (comp != ZLIB_COMPRESSION) 1.655 +- return -EINVAL; 1.656 ++ decompressor = squashfs_lookup_decompressor(id); 1.657 ++ if (!decompressor->supported) { 1.658 ++ ERROR("Filesystem uses \"%s\" compression. This is not " 1.659 ++ "supported\n", decompressor->name); 1.660 ++ return NULL; 1.661 ++ } 1.662 + 1.663 +- return 0; 1.664 ++ return decompressor; 1.665 + } 1.666 + 1.667 + 1.668 +@@ -86,13 +94,6 @@ 1.669 + } 1.670 + msblk = sb->s_fs_info; 1.671 + 1.672 +- msblk->stream.workspace = kmalloc(zlib_inflate_workspacesize(), 1.673 +- GFP_KERNEL); 1.674 +- if (msblk->stream.workspace == NULL) { 1.675 +- ERROR("Failed to allocate zlib workspace\n"); 1.676 +- goto failure; 1.677 +- } 1.678 +- 1.679 + sblk = kzalloc(sizeof(*sblk), GFP_KERNEL); 1.680 + if (sblk == NULL) { 1.681 + ERROR("Failed to allocate squashfs_super_block\n"); 1.682 +@@ -119,25 +120,25 @@ 1.683 + goto failed_mount; 1.684 + } 1.685 + 1.686 ++ err = -EINVAL; 1.687 ++ 1.688 + /* Check it is a SQUASHFS superblock */ 1.689 + sb->s_magic = le32_to_cpu(sblk->s_magic); 1.690 + if (sb->s_magic != SQUASHFS_MAGIC) { 1.691 + if (!silent) 1.692 + ERROR("Can't find a SQUASHFS superblock on %s\n", 1.693 + bdevname(sb->s_bdev, b)); 1.694 +- err = -EINVAL; 1.695 + goto failed_mount; 1.696 + } 1.697 + 1.698 +- /* Check the MAJOR & MINOR versions and compression type */ 1.699 +- err = supported_squashfs_filesystem(le16_to_cpu(sblk->s_major), 1.700 ++ /* Check the MAJOR & MINOR versions and lookup compression type */ 1.701 ++ msblk->decompressor = supported_squashfs_filesystem( 1.702 ++ le16_to_cpu(sblk->s_major), 1.703 + le16_to_cpu(sblk->s_minor), 1.704 + le16_to_cpu(sblk->compression)); 1.705 +- if (err < 0) 1.706 ++ if (msblk->decompressor == NULL) 1.707 + goto failed_mount; 1.708 + 1.709 +- err = -EINVAL; 1.710 +- 1.711 + /* 1.712 + * Check if there's xattrs in the filesystem. These are not 1.713 + * supported in this version, so warn that they will be ignored. 1.714 +@@ -204,6 +205,10 @@ 1.715 + 1.716 + err = -ENOMEM; 1.717 + 1.718 ++ msblk->stream = squashfs_decompressor_init(msblk); 1.719 ++ if (msblk->stream == NULL) 1.720 ++ goto failed_mount; 1.721 ++ 1.722 + msblk->block_cache = squashfs_cache_init("metadata", 1.723 + SQUASHFS_CACHED_BLKS, SQUASHFS_METADATA_SIZE); 1.724 + if (msblk->block_cache == NULL) 1.725 +@@ -291,17 +296,16 @@ 1.726 + squashfs_cache_delete(msblk->block_cache); 1.727 + squashfs_cache_delete(msblk->fragment_cache); 1.728 + squashfs_cache_delete(msblk->read_page); 1.729 ++ squashfs_decompressor_free(msblk, msblk->stream); 1.730 + kfree(msblk->inode_lookup_table); 1.731 + kfree(msblk->fragment_index); 1.732 + kfree(msblk->id_table); 1.733 +- kfree(msblk->stream.workspace); 1.734 + kfree(sb->s_fs_info); 1.735 + sb->s_fs_info = NULL; 1.736 + kfree(sblk); 1.737 + return err; 1.738 + 1.739 + failure: 1.740 +- kfree(msblk->stream.workspace); 1.741 + kfree(sb->s_fs_info); 1.742 + sb->s_fs_info = NULL; 1.743 + return -ENOMEM; 1.744 +@@ -338,18 +342,22 @@ 1.745 + 1.746 + static void squashfs_put_super(struct super_block *sb) 1.747 + { 1.748 ++ lock_kernel(); 1.749 ++ 1.750 + if (sb->s_fs_info) { 1.751 + struct squashfs_sb_info *sbi = sb->s_fs_info; 1.752 + squashfs_cache_delete(sbi->block_cache); 1.753 + squashfs_cache_delete(sbi->fragment_cache); 1.754 + squashfs_cache_delete(sbi->read_page); 1.755 ++ squashfs_decompressor_free(sbi, sbi->stream); 1.756 + kfree(sbi->id_table); 1.757 + kfree(sbi->fragment_index); 1.758 + kfree(sbi->meta_index); 1.759 +- kfree(sbi->stream.workspace); 1.760 + kfree(sb->s_fs_info); 1.761 + sb->s_fs_info = NULL; 1.762 + } 1.763 ++ 1.764 ++ unlock_kernel(); 1.765 + } 1.766 + 1.767 + 1.768 +@@ -439,7 +447,7 @@ 1.769 + .fs_flags = FS_REQUIRES_DEV 1.770 + }; 1.771 + 1.772 +-static struct super_operations squashfs_super_ops = { 1.773 ++static const struct super_operations squashfs_super_ops = { 1.774 + .alloc_inode = squashfs_alloc_inode, 1.775 + .destroy_inode = squashfs_destroy_inode, 1.776 + .statfs = squashfs_statfs, 1.777 + 1.778 +--- linux-2.6.30.6/fs/squashfs/symlink.c 1.779 ++++ linux-2.6.30.6/fs/squashfs/symlink.c 1.780 +@@ -36,7 +36,6 @@ 1.781 + #include <linux/slab.h> 1.782 + #include <linux/string.h> 1.783 + #include <linux/pagemap.h> 1.784 +-#include <linux/zlib.h> 1.785 + 1.786 + #include "squashfs_fs.h" 1.787 + #include "squashfs_fs_sb.h" 1.788 + 1.789 +--- linux-2.6.30.6/fs/squashfs/zlib_wrapper.c 1.790 ++++ linux-2.6.30.6/fs/squashfs/zlib_wrapper.c 1.791 +@@ -0,0 +1,150 @@ 1.792 ++/* 1.793 ++ * Squashfs - a compressed read only filesystem for Linux 1.794 ++ * 1.795 ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 1.796 ++ * Phillip Lougher <phillip@lougher.demon.co.uk> 1.797 ++ * 1.798 ++ * This program is free software; you can redistribute it and/or 1.799 ++ * modify it under the terms of the GNU General Public License 1.800 ++ * as published by the Free Software Foundation; either version 2, 1.801 ++ * or (at your option) any later version. 1.802 ++ * 1.803 ++ * This program is distributed in the hope that it will be useful, 1.804 ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of 1.805 ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1.806 ++ * GNU General Public License for more details. 1.807 ++ * 1.808 ++ * You should have received a copy of the GNU General Public License 1.809 ++ * along with this program; if not, write to the Free Software 1.810 ++ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 1.811 ++ * 1.812 ++ * zlib_wrapper.c 1.813 ++ */ 1.814 ++ 1.815 ++ 1.816 ++#include <linux/mutex.h> 1.817 ++#include <linux/buffer_head.h> 1.818 ++#include <linux/zlib.h> 1.819 ++ 1.820 ++#include "squashfs_fs.h" 1.821 ++#include "squashfs_fs_sb.h" 1.822 ++#include "squashfs_fs_i.h" 1.823 ++#include "squashfs.h" 1.824 ++#include "decompressor.h" 1.825 ++ 1.826 ++static void *zlib_init(struct squashfs_sb_info *dummy) 1.827 ++{ 1.828 ++ z_stream *stream = kmalloc(sizeof(z_stream), GFP_KERNEL); 1.829 ++ if (stream == NULL) 1.830 ++ goto failed; 1.831 ++ stream->workspace = kmalloc(zlib_inflate_workspacesize(), 1.832 ++ GFP_KERNEL); 1.833 ++ if (stream->workspace == NULL) 1.834 ++ goto failed; 1.835 ++ 1.836 ++ return stream; 1.837 ++ 1.838 ++failed: 1.839 ++ ERROR("Failed to allocate zlib workspace\n"); 1.840 ++ kfree(stream); 1.841 ++ return NULL; 1.842 ++} 1.843 ++ 1.844 ++ 1.845 ++static void zlib_free(void *strm) 1.846 ++{ 1.847 ++ z_stream *stream = strm; 1.848 ++ 1.849 ++ if (stream) 1.850 ++ kfree(stream->workspace); 1.851 ++ kfree(stream); 1.852 ++} 1.853 ++ 1.854 ++ 1.855 ++static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, 1.856 ++ struct buffer_head **bh, int b, int offset, int length, int srclength, 1.857 ++ int pages) 1.858 ++{ 1.859 ++ int zlib_err = 0, zlib_init = 0; 1.860 ++ int avail, bytes, k = 0, page = 0; 1.861 ++ z_stream *stream = msblk->stream; 1.862 ++ 1.863 ++ mutex_lock(&msblk->read_data_mutex); 1.864 ++ 1.865 ++ stream->avail_out = 0; 1.866 ++ stream->avail_in = 0; 1.867 ++ 1.868 ++ bytes = length; 1.869 ++ do { 1.870 ++ if (stream->avail_in == 0 && k < b) { 1.871 ++ avail = min(bytes, msblk->devblksize - offset); 1.872 ++ bytes -= avail; 1.873 ++ wait_on_buffer(bh[k]); 1.874 ++ if (!buffer_uptodate(bh[k])) 1.875 ++ goto release_mutex; 1.876 ++ 1.877 ++ if (avail == 0) { 1.878 ++ offset = 0; 1.879 ++ put_bh(bh[k++]); 1.880 ++ continue; 1.881 ++ } 1.882 ++ 1.883 ++ stream->next_in = bh[k]->b_data + offset; 1.884 ++ stream->avail_in = avail; 1.885 ++ offset = 0; 1.886 ++ } 1.887 ++ 1.888 ++ if (stream->avail_out == 0 && page < pages) { 1.889 ++ stream->next_out = buffer[page++]; 1.890 ++ stream->avail_out = PAGE_CACHE_SIZE; 1.891 ++ } 1.892 ++ 1.893 ++ if (!zlib_init) { 1.894 ++ zlib_err = zlib_inflateInit(stream); 1.895 ++ if (zlib_err != Z_OK) { 1.896 ++ ERROR("zlib_inflateInit returned unexpected " 1.897 ++ "result 0x%x, srclength %d\n", 1.898 ++ zlib_err, srclength); 1.899 ++ goto release_mutex; 1.900 ++ } 1.901 ++ zlib_init = 1; 1.902 ++ } 1.903 ++ 1.904 ++ zlib_err = zlib_inflate(stream, Z_SYNC_FLUSH); 1.905 ++ 1.906 ++ if (stream->avail_in == 0 && k < b) 1.907 ++ put_bh(bh[k++]); 1.908 ++ } while (zlib_err == Z_OK); 1.909 ++ 1.910 ++ if (zlib_err != Z_STREAM_END) { 1.911 ++ ERROR("zlib_inflate error, data probably corrupt\n"); 1.912 ++ goto release_mutex; 1.913 ++ } 1.914 ++ 1.915 ++ zlib_err = zlib_inflateEnd(stream); 1.916 ++ if (zlib_err != Z_OK) { 1.917 ++ ERROR("zlib_inflate error, data probably corrupt\n"); 1.918 ++ goto release_mutex; 1.919 ++ } 1.920 ++ 1.921 ++ mutex_unlock(&msblk->read_data_mutex); 1.922 ++ return stream->total_out; 1.923 ++ 1.924 ++release_mutex: 1.925 ++ mutex_unlock(&msblk->read_data_mutex); 1.926 ++ 1.927 ++ for (; k < b; k++) 1.928 ++ put_bh(bh[k]); 1.929 ++ 1.930 ++ return -EIO; 1.931 ++} 1.932 ++ 1.933 ++const struct squashfs_decompressor squashfs_zlib_comp_ops = { 1.934 ++ .init = zlib_init, 1.935 ++ .free = zlib_free, 1.936 ++ .decompress = zlib_uncompress, 1.937 ++ .id = ZLIB_COMPRESSION, 1.938 ++ .name = "zlib", 1.939 ++ .supported = 1 1.940 ++}; 1.941 ++ 1.942 + 1.943 +--- linux-2.6.30.6/include/linux/decompress/bunzip2_mm.h 1.944 ++++ linux-2.6.30.6/include/linux/decompress/bunzip2_mm.h 1.945 +@@ -0,0 +1,13 @@ 1.946 ++#ifndef BUNZIP2_MM_H 1.947 ++#define BUNZIP2_MM_H 1.948 ++ 1.949 ++#ifdef STATIC 1.950 ++/* Code active when included from pre-boot environment: */ 1.951 ++#define INIT 1.952 ++#else 1.953 ++/* Compile for initramfs/initrd code only */ 1.954 ++#define INIT __init 1.955 ++static void(*error)(char *m); 1.956 ++#endif 1.957 ++ 1.958 ++#endif 1.959 + 1.960 +--- linux-2.6.30.6/include/linux/decompress/inflate_mm.h 1.961 ++++ linux-2.6.30.6/include/linux/decompress/inflate_mm.h 1.962 +@@ -0,0 +1,13 @@ 1.963 ++#ifndef INFLATE_MM_H 1.964 ++#define INFLATE_MM_H 1.965 ++ 1.966 ++#ifdef STATIC 1.967 ++/* Code active when included from pre-boot environment: */ 1.968 ++#define INIT 1.969 ++#else 1.970 ++/* Compile for initramfs/initrd code only */ 1.971 ++#define INIT __init 1.972 ++static void(*error)(char *m); 1.973 ++#endif 1.974 ++ 1.975 ++#endif 1.976 + 1.977 +--- linux-2.6.30.6/include/linux/decompress/mm.h 1.978 ++++ linux-2.6.30.6/include/linux/decompress/mm.h 1.979 +@@ -25,7 +25,7 @@ 1.980 + void *p; 1.981 + 1.982 + if (size < 0) 1.983 +- error("Malloc error"); 1.984 ++ return NULL; 1.985 + if (!malloc_ptr) 1.986 + malloc_ptr = free_mem_ptr; 1.987 + 1.988 +@@ -35,7 +35,7 @@ 1.989 + malloc_ptr += size; 1.990 + 1.991 + if (free_mem_end_ptr && malloc_ptr >= free_mem_end_ptr) 1.992 +- error("Out of memory"); 1.993 ++ return NULL; 1.994 + 1.995 + malloc_count++; 1.996 + return p; 1.997 +@@ -53,8 +53,6 @@ 1.998 + 1.999 + #define set_error_fn(x) 1.1000 + 1.1001 +-#define INIT 1.1002 +- 1.1003 + #else /* STATIC */ 1.1004 + 1.1005 + /* Code active when compiled standalone for use when loading ramdisk: */ 1.1006 +@@ -74,10 +72,8 @@ 1.1007 + #define large_malloc(a) vmalloc(a) 1.1008 + #define large_free(a) vfree(a) 1.1009 + 1.1010 +-static void(*error)(char *m); 1.1011 + #define set_error_fn(x) error = x; 1.1012 + 1.1013 +-#define INIT __init 1.1014 + #define STATIC 1.1015 + 1.1016 + #include <linux/init.h> 1.1017 + 1.1018 +--- linux-2.6.30.6/include/linux/decompress/unlzma_mm.h 1.1019 ++++ linux-2.6.30.6/include/linux/decompress/unlzma_mm.h 1.1020 +@@ -0,0 +1,20 @@ 1.1021 ++#ifndef UNLZMA_MM_H 1.1022 ++#define UNLZMA_MM_H 1.1023 ++ 1.1024 ++#ifdef STATIC 1.1025 ++ 1.1026 ++/* Code active when included from pre-boot environment: */ 1.1027 ++#define INIT 1.1028 ++ 1.1029 ++#elif defined(CONFIG_DECOMPRESS_LZMA_NEEDED) 1.1030 ++ 1.1031 ++/* Make it available to non initramfs/initrd code */ 1.1032 ++#define INIT 1.1033 ++#include <linux/module.h> 1.1034 ++#else 1.1035 ++ 1.1036 ++/* Compile for initramfs/initrd code only */ 1.1037 ++#define INIT __init 1.1038 ++#endif 1.1039 ++ 1.1040 ++#endif 1.1041 + 1.1042 +--- linux-2.6.30.6/lib/Kconfig 1.1043 ++++ linux-2.6.30.6/lib/Kconfig 1.1044 +@@ -10,6 +10,9 @@ 1.1045 + config BITREVERSE 1.1046 + tristate 1.1047 + 1.1048 ++config RATIONAL 1.1049 ++ boolean 1.1050 ++ 1.1051 + config GENERIC_FIND_FIRST_BIT 1.1052 + bool 1.1053 + 1.1054 +@@ -114,6 +117,9 @@ 1.1055 + config DECOMPRESS_LZMA 1.1056 + tristate 1.1057 + 1.1058 ++config DECOMPRESS_LZMA_NEEDED 1.1059 ++ boolean 1.1060 ++ 1.1061 + # 1.1062 + # Generic allocator support is selected if needed 1.1063 + # 1.1064 +@@ -153,6 +159,9 @@ 1.1065 + config TEXTSEARCH_FSM 1.1066 + tristate 1.1067 + 1.1068 ++config BTREE 1.1069 ++ boolean 1.1070 ++ 1.1071 + config HAS_IOMEM 1.1072 + boolean 1.1073 + depends on !NO_IOMEM 1.1074 +@@ -190,5 +199,35 @@ 1.1075 + # 1.1076 + config NLATTR 1.1077 + bool 1.1078 ++ 1.1079 ++# 1.1080 ++# Generic 64-bit atomic support is selected if needed 1.1081 ++# 1.1082 ++config GENERIC_ATOMIC64 1.1083 ++ bool 1.1084 ++ 1.1085 ++config LRU_CACHE 1.1086 ++ tristate 1.1087 ++ 1.1088 ++config SHM_SIGNAL 1.1089 ++ tristate "SHM Signal - Generic shared-memory signaling mechanism" 1.1090 ++ default n 1.1091 ++ help 1.1092 ++ Provides a shared-memory based signaling mechanism to indicate 1.1093 ++ memory-dirty notifications between two end-points. 1.1094 ++ 1.1095 ++ If unsure, say N 1.1096 ++ 1.1097 ++config IOQ 1.1098 ++ tristate "IO-Queue library - Generic shared-memory queue" 1.1099 ++ select SHM_SIGNAL 1.1100 ++ default n 1.1101 ++ help 1.1102 ++ IOQ is a generic shared-memory-queue mechanism that happens to be 1.1103 ++ friendly to virtualization boundaries. It can be used in a variety 1.1104 ++ of ways, though its intended purpose is to become a low-level 1.1105 ++ communication path for paravirtualized drivers. 1.1106 ++ 1.1107 ++ If unsure, say N 1.1108 + 1.1109 + endmenu 1.1110 + 1.1111 +--- linux-2.6.30.6/lib/decompress_bunzip2.c 1.1112 ++++ linux-2.6.30.6/lib/decompress_bunzip2.c 1.1113 +@@ -45,12 +45,15 @@ 1.1114 + */ 1.1115 + 1.1116 + 1.1117 +-#ifndef STATIC 1.1118 ++#ifdef STATIC 1.1119 ++#define PREBOOT 1.1120 ++#else 1.1121 + #include <linux/decompress/bunzip2.h> 1.1122 +-#endif /* !STATIC */ 1.1123 ++#include <linux/slab.h> 1.1124 ++#endif /* STATIC */ 1.1125 + 1.1126 ++#include <linux/decompress/bunzip2_mm.h> 1.1127 + #include <linux/decompress/mm.h> 1.1128 +-#include <linux/slab.h> 1.1129 + 1.1130 + #ifndef INT_MAX 1.1131 + #define INT_MAX 0x7fffffff 1.1132 +@@ -297,7 +300,7 @@ 1.1133 + again when using them (during symbol decoding).*/ 1.1134 + base = hufGroup->base-1; 1.1135 + limit = hufGroup->limit-1; 1.1136 +- /* Calculate permute[]. Concurently, initialize 1.1137 ++ /* Calculate permute[]. Concurrently, initialize 1.1138 + * temp[] and limit[]. */ 1.1139 + pp = 0; 1.1140 + for (i = minLen; i <= maxLen; i++) { 1.1141 +@@ -635,6 +638,8 @@ 1.1142 + 1.1143 + /* Allocate bunzip_data. Most fields initialize to zero. */ 1.1144 + bd = *bdp = malloc(i); 1.1145 ++ if (!bd) 1.1146 ++ return RETVAL_OUT_OF_MEMORY; 1.1147 + memset(bd, 0, sizeof(struct bunzip_data)); 1.1148 + /* Setup input buffer */ 1.1149 + bd->inbuf = inbuf; 1.1150 +@@ -662,6 +667,8 @@ 1.1151 + bd->dbufSize = 100000*(i-BZh0); 1.1152 + 1.1153 + bd->dbuf = large_malloc(bd->dbufSize * sizeof(int)); 1.1154 ++ if (!bd->dbuf) 1.1155 ++ return RETVAL_OUT_OF_MEMORY; 1.1156 + return RETVAL_OK; 1.1157 + } 1.1158 + 1.1159 +@@ -681,12 +688,10 @@ 1.1160 + set_error_fn(error_fn); 1.1161 + if (flush) 1.1162 + outbuf = malloc(BZIP2_IOBUF_SIZE); 1.1163 +- else 1.1164 +- len -= 4; /* Uncompressed size hack active in pre-boot 1.1165 +- environment */ 1.1166 ++ 1.1167 + if (!outbuf) { 1.1168 + error("Could not allocate output bufer"); 1.1169 +- return -1; 1.1170 ++ return RETVAL_OUT_OF_MEMORY; 1.1171 + } 1.1172 + if (buf) 1.1173 + inbuf = buf; 1.1174 +@@ -694,6 +699,7 @@ 1.1175 + inbuf = malloc(BZIP2_IOBUF_SIZE); 1.1176 + if (!inbuf) { 1.1177 + error("Could not allocate input bufer"); 1.1178 ++ i = RETVAL_OUT_OF_MEMORY; 1.1179 + goto exit_0; 1.1180 + } 1.1181 + i = start_bunzip(&bd, inbuf, len, fill); 1.1182 +@@ -720,11 +726,14 @@ 1.1183 + } else if (i == RETVAL_UNEXPECTED_OUTPUT_EOF) { 1.1184 + error("Compressed file ends unexpectedly"); 1.1185 + } 1.1186 ++ if (!bd) 1.1187 ++ goto exit_1; 1.1188 + if (bd->dbuf) 1.1189 + large_free(bd->dbuf); 1.1190 + if (pos) 1.1191 + *pos = bd->inbufPos; 1.1192 + free(bd); 1.1193 ++exit_1: 1.1194 + if (!buf) 1.1195 + free(inbuf); 1.1196 + exit_0: 1.1197 +@@ -733,4 +742,14 @@ 1.1198 + return i; 1.1199 + } 1.1200 + 1.1201 +-#define decompress bunzip2 1.1202 ++#ifdef PREBOOT 1.1203 ++STATIC int INIT decompress(unsigned char *buf, int len, 1.1204 ++ int(*fill)(void*, unsigned int), 1.1205 ++ int(*flush)(void*, unsigned int), 1.1206 ++ unsigned char *outbuf, 1.1207 ++ int *pos, 1.1208 ++ void(*error_fn)(char *x)) 1.1209 ++{ 1.1210 ++ return bunzip2(buf, len - 4, fill, flush, outbuf, pos, error_fn); 1.1211 ++} 1.1212 ++#endif 1.1213 + 1.1214 +--- linux-2.6.30.6/lib/decompress_inflate.c 1.1215 ++++ linux-2.6.30.6/lib/decompress_inflate.c 1.1216 +@@ -19,14 +19,20 @@ 1.1217 + #include "zlib_inflate/inflate.h" 1.1218 + 1.1219 + #include "zlib_inflate/infutil.h" 1.1220 ++#include <linux/slab.h> 1.1221 + 1.1222 + #endif /* STATIC */ 1.1223 + 1.1224 ++#include <linux/decompress/inflate_mm.h> 1.1225 + #include <linux/decompress/mm.h> 1.1226 +-#include <linux/slab.h> 1.1227 + 1.1228 +-#define INBUF_LEN (16*1024) 1.1229 ++#define GZIP_IOBUF_SIZE (16*1024) 1.1230 + 1.1231 ++static int nofill(void *buffer, unsigned int len) 1.1232 ++{ 1.1233 ++ return -1; 1.1234 ++} 1.1235 ++ 1.1236 + /* Included from initramfs et al code */ 1.1237 + STATIC int INIT gunzip(unsigned char *buf, int len, 1.1238 + int(*fill)(void*, unsigned int), 1.1239 +@@ -55,7 +61,7 @@ 1.1240 + if (buf) 1.1241 + zbuf = buf; 1.1242 + else { 1.1243 +- zbuf = malloc(INBUF_LEN); 1.1244 ++ zbuf = malloc(GZIP_IOBUF_SIZE); 1.1245 + len = 0; 1.1246 + } 1.1247 + if (!zbuf) { 1.1248 +@@ -76,8 +82,11 @@ 1.1249 + goto gunzip_nomem4; 1.1250 + } 1.1251 + 1.1252 ++ if (!fill) 1.1253 ++ fill = nofill; 1.1254 ++ 1.1255 + if (len == 0) 1.1256 +- len = fill(zbuf, INBUF_LEN); 1.1257 ++ len = fill(zbuf, GZIP_IOBUF_SIZE); 1.1258 + 1.1259 + /* verify the gzip header */ 1.1260 + if (len < 10 || 1.1261 +@@ -113,7 +122,7 @@ 1.1262 + while (rc == Z_OK) { 1.1263 + if (strm->avail_in == 0) { 1.1264 + /* TODO: handle case where both pos and fill are set */ 1.1265 +- len = fill(zbuf, INBUF_LEN); 1.1266 ++ len = fill(zbuf, GZIP_IOBUF_SIZE); 1.1267 + if (len < 0) { 1.1268 + rc = -1; 1.1269 + error("read error"); 1.1270 + 1.1271 +--- linux-2.6.30.6/lib/decompress_unlzma.c 1.1272 ++++ linux-2.6.30.6/lib/decompress_unlzma.c 1.1273 +@@ -29,12 +29,15 @@ 1.1274 + *Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 1.1275 + */ 1.1276 + 1.1277 +-#ifndef STATIC 1.1278 ++#ifdef STATIC 1.1279 ++#define PREBOOT 1.1280 ++#else 1.1281 + #include <linux/decompress/unlzma.h> 1.1282 ++#include <linux/slab.h> 1.1283 + #endif /* STATIC */ 1.1284 + 1.1285 ++#include <linux/decompress/unlzma_mm.h> 1.1286 + #include <linux/decompress/mm.h> 1.1287 +-#include <linux/slab.h> 1.1288 + 1.1289 + #define MIN(a, b) (((a) < (b)) ? (a) : (b)) 1.1290 + 1.1291 +@@ -80,8 +83,13 @@ 1.1292 + #define RC_MODEL_TOTAL_BITS 11 1.1293 + 1.1294 + 1.1295 ++static int nofill(void *buffer, unsigned int len) 1.1296 ++{ 1.1297 ++ return -1; 1.1298 ++} 1.1299 ++ 1.1300 + /* Called twice: once at startup and once in rc_normalize() */ 1.1301 +-static void INIT rc_read(struct rc *rc) 1.1302 ++static void INIT rc_read(struct rc *rc, void(*error)(char *x)) 1.1303 + { 1.1304 + rc->buffer_size = rc->fill((char *)rc->buffer, LZMA_IOBUF_SIZE); 1.1305 + if (rc->buffer_size <= 0) 1.1306 +@@ -95,7 +103,10 @@ 1.1307 + int (*fill)(void*, unsigned int), 1.1308 + char *buffer, int buffer_size) 1.1309 + { 1.1310 +- rc->fill = fill; 1.1311 ++ if (fill) 1.1312 ++ rc->fill = fill; 1.1313 ++ else 1.1314 ++ rc->fill = nofill; 1.1315 + rc->buffer = (uint8_t *)buffer; 1.1316 + rc->buffer_size = buffer_size; 1.1317 + rc->buffer_end = rc->buffer + rc->buffer_size; 1.1318 +@@ -105,13 +116,13 @@ 1.1319 + rc->range = 0xFFFFFFFF; 1.1320 + } 1.1321 + 1.1322 +-static inline void INIT rc_init_code(struct rc *rc) 1.1323 ++static inline void INIT rc_init_code(struct rc *rc, void(*error)(char *x)) 1.1324 + { 1.1325 + int i; 1.1326 + 1.1327 + for (i = 0; i < 5; i++) { 1.1328 + if (rc->ptr >= rc->buffer_end) 1.1329 +- rc_read(rc); 1.1330 ++ rc_read(rc, error); 1.1331 + rc->code = (rc->code << 8) | *rc->ptr++; 1.1332 + } 1.1333 + } 1.1334 +@@ -124,32 +135,33 @@ 1.1335 + } 1.1336 + 1.1337 + /* Called twice, but one callsite is in inline'd rc_is_bit_0_helper() */ 1.1338 +-static void INIT rc_do_normalize(struct rc *rc) 1.1339 ++static void INIT rc_do_normalize(struct rc *rc, void(*error)(char *x)) 1.1340 + { 1.1341 + if (rc->ptr >= rc->buffer_end) 1.1342 +- rc_read(rc); 1.1343 ++ rc_read(rc, error); 1.1344 + rc->range <<= 8; 1.1345 + rc->code = (rc->code << 8) | *rc->ptr++; 1.1346 + } 1.1347 +-static inline void INIT rc_normalize(struct rc *rc) 1.1348 ++static inline void INIT rc_normalize(struct rc *rc, void(*error)(char *x)) 1.1349 + { 1.1350 + if (rc->range < (1 << RC_TOP_BITS)) 1.1351 +- rc_do_normalize(rc); 1.1352 ++ rc_do_normalize(rc, error); 1.1353 + } 1.1354 + 1.1355 + /* Called 9 times */ 1.1356 + /* Why rc_is_bit_0_helper exists? 1.1357 + *Because we want to always expose (rc->code < rc->bound) to optimizer 1.1358 + */ 1.1359 +-static inline uint32_t INIT rc_is_bit_0_helper(struct rc *rc, uint16_t *p) 1.1360 ++static inline uint32_t INIT rc_is_bit_0_helper(struct rc *rc, uint16_t *p, 1.1361 ++ void (*error)(char *x)) 1.1362 + { 1.1363 +- rc_normalize(rc); 1.1364 ++ rc_normalize(rc, error); 1.1365 + rc->bound = *p * (rc->range >> RC_MODEL_TOTAL_BITS); 1.1366 + return rc->bound; 1.1367 + } 1.1368 +-static inline int INIT rc_is_bit_0(struct rc *rc, uint16_t *p) 1.1369 ++static inline int INIT rc_is_bit_0(struct rc *rc, uint16_t *p, void(*error)(char *x)) 1.1370 + { 1.1371 +- uint32_t t = rc_is_bit_0_helper(rc, p); 1.1372 ++ uint32_t t = rc_is_bit_0_helper(rc, p, error); 1.1373 + return rc->code < t; 1.1374 + } 1.1375 + 1.1376 +@@ -167,9 +179,9 @@ 1.1377 + } 1.1378 + 1.1379 + /* Called 4 times in unlzma loop */ 1.1380 +-static int INIT rc_get_bit(struct rc *rc, uint16_t *p, int *symbol) 1.1381 ++static int INIT rc_get_bit(struct rc *rc, uint16_t *p, int *symbol, void(*error)(char *x)) 1.1382 + { 1.1383 +- if (rc_is_bit_0(rc, p)) { 1.1384 ++ if (rc_is_bit_0(rc, p, error)) { 1.1385 + rc_update_bit_0(rc, p); 1.1386 + *symbol *= 2; 1.1387 + return 0; 1.1388 +@@ -181,9 +193,9 @@ 1.1389 + } 1.1390 + 1.1391 + /* Called once */ 1.1392 +-static inline int INIT rc_direct_bit(struct rc *rc) 1.1393 ++static inline int INIT rc_direct_bit(struct rc *rc , void(*error)(char *x)) 1.1394 + { 1.1395 +- rc_normalize(rc); 1.1396 ++ rc_normalize(rc, error); 1.1397 + rc->range >>= 1; 1.1398 + if (rc->code >= rc->range) { 1.1399 + rc->code -= rc->range; 1.1400 +@@ -194,13 +206,14 @@ 1.1401 + 1.1402 + /* Called twice */ 1.1403 + static inline void INIT 1.1404 +-rc_bit_tree_decode(struct rc *rc, uint16_t *p, int num_levels, int *symbol) 1.1405 ++rc_bit_tree_decode(struct rc *rc, uint16_t *p, int num_levels, int *symbol, 1.1406 ++ void(*error)(char *x)) 1.1407 + { 1.1408 + int i = num_levels; 1.1409 + 1.1410 + *symbol = 1; 1.1411 + while (i--) 1.1412 +- rc_get_bit(rc, p + *symbol, symbol); 1.1413 ++ rc_get_bit(rc, p + *symbol, symbol, error); 1.1414 + *symbol -= 1 << num_levels; 1.1415 + } 1.1416 + 1.1417 +@@ -396,7 +409,8 @@ 1.1418 + static inline void INIT process_bit0(struct writer *wr, struct rc *rc, 1.1419 + struct cstate *cst, uint16_t *p, 1.1420 + int pos_state, uint16_t *prob, 1.1421 +- int lc, uint32_t literal_pos_mask) { 1.1422 ++ int lc, uint32_t literal_pos_mask, 1.1423 ++ void(*error)(char *x)) { 1.1424 + int mi = 1; 1.1425 + static const int state[LZMA_NUM_STATES] = 1.1426 + { 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 4, 5 }; 1.1427 +@@ -417,7 +431,7 @@ 1.1428 + match_byte <<= 1; 1.1429 + bit = match_byte & 0x100; 1.1430 + prob_lit = prob + 0x100 + bit + mi; 1.1431 +- if (rc_get_bit(rc, prob_lit, &mi)) { 1.1432 ++ if (rc_get_bit(rc, prob_lit, &mi, error)) { 1.1433 + if (!bit) 1.1434 + break; 1.1435 + } else { 1.1436 +@@ -428,7 +442,7 @@ 1.1437 + } 1.1438 + while (mi < 0x100) { 1.1439 + uint16_t *prob_lit = prob + mi; 1.1440 +- rc_get_bit(rc, prob_lit, &mi); 1.1441 ++ rc_get_bit(rc, prob_lit, &mi, error); 1.1442 + } 1.1443 + write_byte(wr, mi); 1.1444 + cst->state = state[cst->state]; 1.1445 +@@ -436,7 +450,8 @@ 1.1446 + 1.1447 + static inline void INIT process_bit1(struct writer *wr, struct rc *rc, 1.1448 + struct cstate *cst, uint16_t *p, 1.1449 +- int pos_state, uint16_t *prob) { 1.1450 ++ int pos_state, uint16_t *prob, 1.1451 ++ void(*error)(char *x)) { 1.1452 + int offset; 1.1453 + uint16_t *prob_len; 1.1454 + int num_bits; 1.1455 +@@ -444,7 +459,7 @@ 1.1456 + 1.1457 + rc_update_bit_1(rc, prob); 1.1458 + prob = p + LZMA_IS_REP + cst->state; 1.1459 +- if (rc_is_bit_0(rc, prob)) { 1.1460 ++ if (rc_is_bit_0(rc, prob, error)) { 1.1461 + rc_update_bit_0(rc, prob); 1.1462 + cst->rep3 = cst->rep2; 1.1463 + cst->rep2 = cst->rep1; 1.1464 +@@ -454,13 +469,13 @@ 1.1465 + } else { 1.1466 + rc_update_bit_1(rc, prob); 1.1467 + prob += LZMA_IS_REP_G0 - LZMA_IS_REP; 1.1468 +- if (rc_is_bit_0(rc, prob)) { 1.1469 ++ if (rc_is_bit_0(rc, prob, error)) { 1.1470 + rc_update_bit_0(rc, prob); 1.1471 + prob = (p + LZMA_IS_REP_0_LONG 1.1472 + + (cst->state << 1.1473 + LZMA_NUM_POS_BITS_MAX) + 1.1474 + pos_state); 1.1475 +- if (rc_is_bit_0(rc, prob)) { 1.1476 ++ if (rc_is_bit_0(rc, prob, error)) { 1.1477 + rc_update_bit_0(rc, prob); 1.1478 + 1.1479 + cst->state = cst->state < LZMA_NUM_LIT_STATES ? 1.1480 +@@ -475,13 +490,13 @@ 1.1481 + 1.1482 + rc_update_bit_1(rc, prob); 1.1483 + prob += LZMA_IS_REP_G1 - LZMA_IS_REP_G0; 1.1484 +- if (rc_is_bit_0(rc, prob)) { 1.1485 ++ if (rc_is_bit_0(rc, prob, error)) { 1.1486 + rc_update_bit_0(rc, prob); 1.1487 + distance = cst->rep1; 1.1488 + } else { 1.1489 + rc_update_bit_1(rc, prob); 1.1490 + prob += LZMA_IS_REP_G2 - LZMA_IS_REP_G1; 1.1491 +- if (rc_is_bit_0(rc, prob)) { 1.1492 ++ if (rc_is_bit_0(rc, prob, error)) { 1.1493 + rc_update_bit_0(rc, prob); 1.1494 + distance = cst->rep2; 1.1495 + } else { 1.1496 +@@ -499,7 +514,7 @@ 1.1497 + } 1.1498 + 1.1499 + prob_len = prob + LZMA_LEN_CHOICE; 1.1500 +- if (rc_is_bit_0(rc, prob_len)) { 1.1501 ++ if (rc_is_bit_0(rc, prob_len, error)) { 1.1502 + rc_update_bit_0(rc, prob_len); 1.1503 + prob_len += LZMA_LEN_LOW - LZMA_LEN_CHOICE 1.1504 + + (pos_state << 1.1505 +@@ -509,7 +524,7 @@ 1.1506 + } else { 1.1507 + rc_update_bit_1(rc, prob_len); 1.1508 + prob_len += LZMA_LEN_CHOICE_2 - LZMA_LEN_CHOICE; 1.1509 +- if (rc_is_bit_0(rc, prob_len)) { 1.1510 ++ if (rc_is_bit_0(rc, prob_len, error)) { 1.1511 + rc_update_bit_0(rc, prob_len); 1.1512 + prob_len += LZMA_LEN_MID - LZMA_LEN_CHOICE_2 1.1513 + + (pos_state << 1.1514 +@@ -525,7 +540,7 @@ 1.1515 + } 1.1516 + } 1.1517 + 1.1518 +- rc_bit_tree_decode(rc, prob_len, num_bits, &len); 1.1519 ++ rc_bit_tree_decode(rc, prob_len, num_bits, &len, error); 1.1520 + len += offset; 1.1521 + 1.1522 + if (cst->state < 4) { 1.1523 +@@ -540,7 +555,7 @@ 1.1524 + << LZMA_NUM_POS_SLOT_BITS); 1.1525 + rc_bit_tree_decode(rc, prob, 1.1526 + LZMA_NUM_POS_SLOT_BITS, 1.1527 +- &pos_slot); 1.1528 ++ &pos_slot, error); 1.1529 + if (pos_slot >= LZMA_START_POS_MODEL_INDEX) { 1.1530 + int i, mi; 1.1531 + num_bits = (pos_slot >> 1) - 1; 1.1532 +@@ -553,7 +568,7 @@ 1.1533 + num_bits -= LZMA_NUM_ALIGN_BITS; 1.1534 + while (num_bits--) 1.1535 + cst->rep0 = (cst->rep0 << 1) | 1.1536 +- rc_direct_bit(rc); 1.1537 ++ rc_direct_bit(rc, error); 1.1538 + prob = p + LZMA_ALIGN; 1.1539 + cst->rep0 <<= LZMA_NUM_ALIGN_BITS; 1.1540 + num_bits = LZMA_NUM_ALIGN_BITS; 1.1541 +@@ -561,7 +576,7 @@ 1.1542 + i = 1; 1.1543 + mi = 1; 1.1544 + while (num_bits--) { 1.1545 +- if (rc_get_bit(rc, prob + mi, &mi)) 1.1546 ++ if (rc_get_bit(rc, prob + mi, &mi, error)) 1.1547 + cst->rep0 |= i; 1.1548 + i <<= 1; 1.1549 + } 1.1550 +@@ -578,12 +593,12 @@ 1.1551 + 1.1552 + 1.1553 + 1.1554 +-STATIC inline int INIT unlzma(unsigned char *buf, int in_len, 1.1555 ++STATIC int INIT unlzma(unsigned char *buf, int in_len, 1.1556 + int(*fill)(void*, unsigned int), 1.1557 + int(*flush)(void*, unsigned int), 1.1558 + unsigned char *output, 1.1559 + int *posp, 1.1560 +- void(*error_fn)(char *x) 1.1561 ++ void(*error)(char *x) 1.1562 + ) 1.1563 + { 1.1564 + extern int cpio_flush_buffer(void*, unsigned int); 1.1565 +@@ -600,10 +615,6 @@ 1.1566 + unsigned char *inbuf; 1.1567 + int ret = -1; 1.1568 + 1.1569 +- set_error_fn(error_fn); 1.1570 +- if (!flush) 1.1571 +- in_len -= 4; /* Uncompressed size hack active in pre-boot 1.1572 +- environment */ 1.1573 + if (buf) 1.1574 + inbuf = buf; 1.1575 + else 1.1576 +@@ -630,7 +641,7 @@ 1.1577 + 1.1578 + for (i = 0; i < sizeof(header); i++) { 1.1579 + if (rc.ptr >= rc.buffer_end) 1.1580 +- rc_read(&rc); 1.1581 ++ rc_read(&rc, error); 1.1582 + ((unsigned char *)&header)[i] = *rc.ptr++; 1.1583 + } 1.1584 + 1.1585 +@@ -675,17 +686,17 @@ 1.1586 + for (i = 0; i < num_probs; i++) 1.1587 + p[i] = (1 << RC_MODEL_TOTAL_BITS) >> 1; 1.1588 + wr.max_index = wr.next_index = 0; 1.1589 +- rc_init_code(&rc); 1.1590 ++ rc_init_code(&rc, error); 1.1591 + 1.1592 + while (get_pos(&wr) < header.dst_size) { 1.1593 + int pos_state = get_pos(&wr) & pos_state_mask; 1.1594 + uint16_t *prob = p + LZMA_IS_MATCH + 1.1595 + (cst.state << LZMA_NUM_POS_BITS_MAX) + pos_state; 1.1596 +- if (rc_is_bit_0(&rc, prob)) 1.1597 ++ if (rc_is_bit_0(&rc, prob, error)) 1.1598 + process_bit0(&wr, &rc, &cst, p, pos_state, prob, 1.1599 +- lc, literal_pos_mask); 1.1600 ++ lc, literal_pos_mask, error); 1.1601 + else { 1.1602 +- process_bit1(&wr, &rc, &cst, p, pos_state, prob); 1.1603 ++ process_bit1(&wr, &rc, &cst, p, pos_state, prob, error); 1.1604 + if (cst.rep0 == 0) 1.1605 + break; 1.1606 + } 1.1607 +@@ -719,5 +730,19 @@ 1.1608 + exit_0: 1.1609 + return ret; 1.1610 + } 1.1611 ++#if defined(CONFIG_DECOMPRESS_LZMA_NEEDED) && !defined(PREBOOT) 1.1612 ++EXPORT_SYMBOL(unlzma); 1.1613 ++#endif 1.1614 + 1.1615 +-#define decompress unlzma 1.1616 ++#ifdef PREBOOT 1.1617 ++STATIC int INIT decompress(unsigned char *buf, int in_len, 1.1618 ++ int(*fill)(void*, unsigned int), 1.1619 ++ int(*flush)(void*, unsigned int), 1.1620 ++ unsigned char *output, 1.1621 ++ int *posp, 1.1622 ++ void(*error_fn)(char *x) 1.1623 ++ ) 1.1624 ++{ 1.1625 ++ return unlzma(buf, in_len - 4, fill, flush, output, posp, error_fn); 1.1626 ++} 1.1627 ++#endif