zstd: Use int type for return type of public functions

Signed-off-by: Hiroshi Hatake <[email protected]>

Author: cosmo0920

include/fluent-bit/flb_zstd.h

@@ -26,8 +26,8 @@
 
 struct flb_decompression_context;
 
-size_t flb_zstd_compress(void *in_data, size_t in_len, void **out_data, size_t *out_len);
-size_t flb_zstd_uncompress(void *in_data, size_t in_len, void **out_data, size_t *out_len);
+int flb_zstd_compress(void *in_data, size_t in_len, void **out_data, size_t *out_len);
+int flb_zstd_uncompress(void *in_data, size_t in_len, void **out_data, size_t *out_len);
 
 int flb_zstd_decompressor_dispatch(struct flb_decompression_context *context,
                                    void *output_buffer,

src/flb_zstd.c

@@ -30,7 +30,7 @@ struct flb_zstd_decompression_context {
 
 #define FLB_ZSTD_DEFAULT_CHUNK 64 * 1024  /* 64 KB buffer */
 
-size_t flb_zstd_compress(void *in_data, size_t in_len, void **out_data, size_t *out_len)
+int flb_zstd_compress(void *in_data, size_t in_len, void **out_data, size_t *out_len)
 {
     void *buf;
     size_t size;
@@ -130,7 +130,7 @@ static int zstd_uncompress_unknown_size(void *in_data, size_t in_len, void **out
     return 0;
 }
 
-size_t flb_zstd_uncompress(void *in_data, size_t in_len, void **out_data, size_t *out_len)
+int flb_zstd_uncompress(void *in_data, size_t in_len, void **out_data, size_t *out_len)
 {
     int ret;
     void *buf;