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| author | Joao Marcos Costa <joaomarcos.costa@bootlin.com> | 2020-08-18 18:17:24 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-08-24 21:11:31 +0300 |
| commit | 6dfed163bd842bf98fd17875067bf8643819a879 (patch) | |
| tree | 2c6fecd2defa674d222f62a838f00eab2a0d6552 | |
| parent | 9c948f536fec115b590760c2e9e333945dfde990 (diff) | |
| download | u-boot-6dfed163bd842bf98fd17875067bf8643819a879.tar.xz | |
fs/squashfs: add support for LZO decompression
Add call to lzo's lzo1x_decompress_safe() into sqfs_decompress().
U-Boot's LZO sources may still have some unsolved issues that could make the
decompression crash when dealing with fragmented files, so those should be
avoided. The "-no-fragments" option can be passed to mksquashfs.
Signed-off-by: Joao Marcos Costa <joaomarcos.costa@bootlin.com>
| -rw-r--r-- | fs/squashfs/sqfs_decompressor.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/squashfs/sqfs_decompressor.c b/fs/squashfs/sqfs_decompressor.c index 9457ee5f0f..d69ddb24a4 100644 --- a/fs/squashfs/sqfs_decompressor.c +++ b/fs/squashfs/sqfs_decompressor.c @@ -9,6 +9,11 @@ #include <stdint.h> #include <stdio.h> #include <stdlib.h> + +#if IS_ENABLED(CONFIG_LZO) +#include <linux/lzo.h> +#endif + #if IS_ENABLED(CONFIG_ZLIB) #include <u-boot/zlib.h> #endif @@ -25,6 +30,10 @@ int sqfs_decompressor_init(struct squashfs_ctxt *ctxt) u16 comp_type = get_unaligned_le16(&ctxt->sblk->compression); switch (comp_type) { +#if IS_ENABLED(CONFIG_LZO) + case SQFS_COMP_LZO: + break; +#endif #if IS_ENABLED(CONFIG_ZLIB) case SQFS_COMP_ZLIB: break; @@ -49,6 +58,10 @@ void sqfs_decompressor_cleanup(struct squashfs_ctxt *ctxt) u16 comp_type = get_unaligned_le16(&ctxt->sblk->compression); switch (comp_type) { +#if IS_ENABLED(CONFIG_LZO) + case SQFS_COMP_LZO: + break; +#endif #if IS_ENABLED(CONFIG_ZLIB) case SQFS_COMP_ZLIB: break; @@ -101,6 +114,18 @@ int sqfs_decompress(struct squashfs_ctxt *ctxt, void *dest, int ret = 0; switch (comp_type) { +#if IS_ENABLED(CONFIG_LZO) + case SQFS_COMP_LZO: { + size_t lzo_dest_len = *dest_len; + ret = lzo1x_decompress_safe(source, src_len, dest, &lzo_dest_len); + if (ret) { + printf("LZO decompression failed. Error code: %d\n", ret); + return -EINVAL; + } + + break; + } +#endif #if IS_ENABLED(CONFIG_ZLIB) case SQFS_COMP_ZLIB: ret = uncompress(dest, dest_len, source, src_len); |