Cleanup libsquashfs invalid argument error codes

 - Add an explicit "you're holding it wrong" error code.
 - Consistently return error codes and not have some special places
   where -1 is returned.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/sqfs/comp/lz4.c b/lib/sqfs/comp/lz4.c
index dcee7d8..dd9b6ac 100644
--- a/lib/sqfs/comp/lz4.c
+++ b/lib/sqfs/comp/lz4.c
@@ -66,7 +66,7 @@ static sqfs_s32 lz4_comp_block(sqfs_compressor_t *base, const sqfs_u8 *in,
 	int ret;
 
 	if (size >= 0x7FFFFFFF)
-		return 0;
+		return SQFS_ERROR_ARG_INVALID;
 
 	if (lz4->high_compression) {
 		ret = LZ4_compress_HC((void *)in, (void *)out,
@@ -89,7 +89,7 @@ static sqfs_s32 lz4_uncomp_block(sqfs_compressor_t *base, const sqfs_u8 *in,
 	(void)base;
 
 	if (outsize >= 0x7FFFFFFF)
-		return 0;
+		return SQFS_ERROR_ARG_INVALID;
 
 	ret = LZ4_decompress_safe((void *)in, (void *)out, size, outsize);