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Diffstat (limited to 'target/linux/generic-2.6/patches-2.6.31/053-squashfs_lzma.patch')
-rw-r--r--target/linux/generic-2.6/patches-2.6.31/053-squashfs_lzma.patch244
1 files changed, 0 insertions, 244 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.31/053-squashfs_lzma.patch b/target/linux/generic-2.6/patches-2.6.31/053-squashfs_lzma.patch
deleted file mode 100644
index 2725f06..0000000
--- a/target/linux/generic-2.6/patches-2.6.31/053-squashfs_lzma.patch
+++ /dev/null
@@ -1,244 +0,0 @@
---- a/fs/squashfs/Kconfig
-+++ b/fs/squashfs/Kconfig
-@@ -2,7 +2,6 @@ config SQUASHFS
- tristate "SquashFS 4.0 - Squashed file system support"
- depends on BLOCK
- select CRYPTO
-- select CRYPTO_ZLIB
- help
- Saying Y here includes support for SquashFS 4.0 (a Compressed
- Read-Only File System). Squashfs is a highly compressed read-only
-@@ -37,6 +36,26 @@ config SQUASHFS_EMBEDDED
-
- If unsure, say N.
-
-+config SQUASHFS_SUPPORT_ZLIB
-+ bool
-+ prompt "Support ZLIB compression" if SQUASHFS_SUPPORT_LZMA
-+ depends on SQUASHFS
-+ select CRYPTO_ZLIB
-+ default y
-+ help
-+ ZLIB is the default compression used in squashfs. If you are
-+ using LZMA compression instead, you can remove support for ZLIB
-+ entirely.
-+
-+config SQUASHFS_SUPPORT_LZMA
-+ bool "Support LZMA compression"
-+ depends on SQUASHFS
-+ select CRYPTO_UNLZMA
-+ help
-+ By default SquashFS uses ZLIB compression, however (if your tools
-+ support it, you can use LZMA instead, which saves space.
-+
-+
- config SQUASHFS_FRAGMENT_CACHE_SIZE
- int "Number of fragments cached" if SQUASHFS_EMBEDDED
- depends on SQUASHFS
---- a/fs/squashfs/squashfs_fs.h
-+++ b/fs/squashfs/squashfs_fs.h
-@@ -212,6 +212,7 @@ struct meta_index {
- * definitions for structures on disk
- */
- #define ZLIB_COMPRESSION 1
-+#define LZMA_COMPRESSION 2
-
- struct squashfs_super_block {
- __le32 s_magic;
---- a/fs/squashfs/super.c
-+++ b/fs/squashfs/super.c
-@@ -48,13 +48,76 @@
- #include "squashfs.h"
-
-
--#define SQUASHFS_CRYPTO_ALG "zlib"
-+static int squashfs_setup_zlib(struct squashfs_sb_info *msblk)
-+{
-+ int err = -EOPNOTSUPP;
-+
-+#ifdef CONFIG_SQUASHFS_SUPPORT_ZLIB
-+ struct {
-+ struct nlattr nla;
-+ int val;
-+ } params = {
-+ .nla = {
-+ .nla_len = nla_attr_size(sizeof(int)),
-+ .nla_type = ZLIB_DECOMP_WINDOWBITS,
-+ },
-+ .val = DEF_WBITS,
-+ };
-+
-+ msblk->tfm = crypto_alloc_pcomp("zlib", 0,
-+ CRYPTO_ALG_ASYNC);
-+ if (IS_ERR(msblk->tfm)) {
-+ ERROR("Failed to load zlib crypto module\n");
-+ return PTR_ERR(msblk->tfm);
-+ }
-+
-+ err = crypto_decompress_setup(msblk->tfm, &params, sizeof(params));
-+ if (err) {
-+ ERROR("Failed to set up decompression parameters\n");
-+ crypto_free_pcomp(msblk->tfm);
-+ }
-+#endif
-+
-+ return err;
-+}
-+
-+static int squashfs_setup_lzma(struct squashfs_sb_info *msblk)
-+{
-+ int err = -EOPNOTSUPP;
-+
-+#ifdef CONFIG_SQUASHFS_SUPPORT_LZMA
-+ struct {
-+ struct nlattr nla;
-+ int val;
-+ } params = {
-+ .nla = {
-+ .nla_len = nla_attr_size(sizeof(int)),
-+ .nla_type = UNLZMA_DECOMP_OUT_BUFFERS,
-+ },
-+ .val = (msblk->block_size / PAGE_CACHE_SIZE) + 1
-+ };
-
-+ msblk->tfm = crypto_alloc_pcomp("lzma", 0,
-+ CRYPTO_ALG_ASYNC);
-+ if (IS_ERR(msblk->tfm)) {
-+ ERROR("Failed to load lzma crypto module\n");
-+ return PTR_ERR(msblk->tfm);
-+ }
-+
-+ err = crypto_decompress_setup(msblk->tfm, &params, sizeof(params));
-+ if (err) {
-+ ERROR("Failed to set up decompression parameters\n");
-+ crypto_free_pcomp(msblk->tfm);
-+ }
-+#endif
-+
-+ return err;
-+}
-
- static struct file_system_type squashfs_fs_type;
- static struct super_operations squashfs_super_ops;
-
--static int supported_squashfs_filesystem(short major, short minor, short comp)
-+static int supported_squashfs_filesystem(short major, short minor)
- {
- if (major < SQUASHFS_MAJOR) {
- ERROR("Major/Minor mismatch, older Squashfs %d.%d "
-@@ -67,9 +130,6 @@ static int supported_squashfs_filesystem
- return -EINVAL;
- }
-
-- if (comp != ZLIB_COMPRESSION)
-- return -EINVAL;
--
- return 0;
- }
-
-@@ -84,16 +144,6 @@ static int squashfs_fill_super(struct su
- unsigned short flags;
- unsigned int fragments;
- u64 lookup_table_start;
-- struct {
-- struct nlattr nla;
-- int val;
-- } params = {
-- .nla = {
-- .nla_len = nla_attr_size(sizeof(int)),
-- .nla_type = ZLIB_DECOMP_WINDOWBITS,
-- },
-- .val = DEF_WBITS,
-- };
- int err;
-
- TRACE("Entered squashfs_fill_superblock\n");
-@@ -105,21 +155,6 @@ static int squashfs_fill_super(struct su
- }
- msblk = sb->s_fs_info;
-
-- msblk->tfm = crypto_alloc_pcomp(SQUASHFS_CRYPTO_ALG, 0,
-- CRYPTO_ALG_ASYNC);
-- if (IS_ERR(msblk->tfm)) {
-- ERROR("Failed to load %s crypto module\n",
-- SQUASHFS_CRYPTO_ALG);
-- err = PTR_ERR(msblk->tfm);
-- goto failed_pcomp;
-- }
--
-- err = crypto_decompress_setup(msblk->tfm, &params, sizeof(params));
-- if (err) {
-- ERROR("Failed to set up decompression parameters\n");
-- goto failure;
-- }
--
- sblk = kzalloc(sizeof(*sblk), GFP_KERNEL);
- if (sblk == NULL) {
- ERROR("Failed to allocate squashfs_super_block\n");
-@@ -157,10 +192,28 @@ static int squashfs_fill_super(struct su
- goto failed_mount;
- }
-
-+ /* Check block size for sanity */
-+ msblk->block_size = le32_to_cpu(sblk->block_size);
-+ if (msblk->block_size > SQUASHFS_FILE_MAX_SIZE)
-+ goto failed_mount;
-+
- /* Check the MAJOR & MINOR versions and compression type */
- err = supported_squashfs_filesystem(le16_to_cpu(sblk->s_major),
-- le16_to_cpu(sblk->s_minor),
-- le16_to_cpu(sblk->compression));
-+ le16_to_cpu(sblk->s_minor));
-+ if (err < 0)
-+ goto failed_mount;
-+
-+ switch(le16_to_cpu(sblk->compression)) {
-+ case ZLIB_COMPRESSION:
-+ err = squashfs_setup_zlib(msblk);
-+ break;
-+ case LZMA_COMPRESSION:
-+ err = squashfs_setup_lzma(msblk);
-+ break;
-+ default:
-+ err = -EINVAL;
-+ break;
-+ }
- if (err < 0)
- goto failed_mount;
-
-@@ -180,11 +233,6 @@ static int squashfs_fill_super(struct su
- i_size_read(sb->s_bdev->bd_inode))
- goto failed_mount;
-
-- /* Check block size for sanity */
-- msblk->block_size = le32_to_cpu(sblk->block_size);
-- if (msblk->block_size > SQUASHFS_FILE_MAX_SIZE)
-- goto failed_mount;
--
- /*
- * Check the system page size is not larger than the filesystem
- * block size (by default 128K). This is currently not supported.
-@@ -316,21 +364,16 @@ allocate_root:
- return 0;
-
- failed_mount:
-+ if (msblk->tfm)
-+ crypto_free_pcomp(msblk->tfm);
- squashfs_cache_delete(msblk->block_cache);
- squashfs_cache_delete(msblk->fragment_cache);
- squashfs_cache_delete(msblk->read_page);
- kfree(msblk->inode_lookup_table);
- kfree(msblk->fragment_index);
- kfree(msblk->id_table);
-- crypto_free_pcomp(msblk->tfm);
-- kfree(sb->s_fs_info);
-- sb->s_fs_info = NULL;
- kfree(sblk);
-- return err;
--
- failure:
-- crypto_free_pcomp(msblk->tfm);
--failed_pcomp:
- kfree(sb->s_fs_info);
- sb->s_fs_info = NULL;
- return err;
generated by cgit v1.1 at 2024-12-15 21:19:44 +0000