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/lzma.c b/lib/sqfs/comp/lzma.c
index 002376f..f7ab428 100644
--- a/lib/sqfs/comp/lzma.c
+++ b/lib/sqfs/comp/lzma.c
@@ -48,7 +48,7 @@ static sqfs_s32 lzma_comp_block(sqfs_compressor_t *base, const sqfs_u8 *in,
 	int ret;
 
 	if (outsize < LZMA_HEADER_SIZE || size >= 0x7FFFFFFF)
-		return 0;
+		return SQFS_ERROR_ARG_INVALID;
 
 	lzma_lzma_preset(&opt, LZMA_DEFAULT_LEVEL);
 	opt.dict_size = lzma->block_size;
@@ -93,7 +93,7 @@ static sqfs_s32 lzma_uncomp_block(sqfs_compressor_t *base, const sqfs_u8 *in,
 	(void)base;
 
 	if (size >= 0x7FFFFFFF)
-		return 0;
+		return SQFS_ERROR_ARG_INVALID;
 
 	if (size < sizeof(lzma_header))
 		return SQFS_ERROR_CORRUPTED;