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| author | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2019-09-27 15:17:37 +0200 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2019-09-27 15:17:37 +0200 |
| commit | f45b36ed81bf3b33f030c769f696e028216ef609 (patch) | |
| tree | b4435deed24f84e2d3009d124c3809d58bd45a39 | |
| parent | acce940aa48678632e58d0befacdc2787f1e43bf (diff) | |
Fix lzma compressor: test if compression actually shrunk the data
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
| -rw-r--r-- | lib/sqfs/comp/lzma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sqfs/comp/lzma.c b/lib/sqfs/comp/lzma.c index 82590c7..9fc507f 100644 --- a/lib/sqfs/comp/lzma.c +++ b/lib/sqfs/comp/lzma.c @@ -69,6 +69,9 @@ static ssize_t lzma_comp_block(sqfs_compressor_t *base, const uint8_t *in, if (ret != LZMA_STREAM_END) return ret == LZMA_OK ? 0 : SQFS_ERROR_COMRPESSOR; + if (strm.total_out > size) + return 0; + out[LZMA_SIZE_OFFSET ] = size & 0xFF; out[LZMA_SIZE_OFFSET + 1] = (size >> 8) & 0xFF; out[LZMA_SIZE_OFFSET + 2] = (size >> 16) & 0xFF; |