fileio: improve API types

Use size_t instead of uint32_t when specifying file sizes.  Update all
consumers up through the layers to use size_t when required.  These
changes should be safe, but the higher-levels will need to be updated
further to receive the intended benefits (i.e. large file support).

Add error checking for fileio_read and file_write.  Previously, all
errors were being silently ignored, so this change might cause some
problems for some people in some cases.  However, it gives us the chance
to handle any errors that do occur at higher-levels, rather than burying
our heads in the sand.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/helper/fileio.h b/src/helper/fileio.h
index 6ed6fe45..325b441f 100644
--- a/src/helper/fileio.h
+++ b/src/helper/fileio.h
@@ -58,13 +58,13 @@ int fileio_open(struct fileio *fileio,
 	const char *url, enum fileio_access access, enum fileio_type type);
 int fileio_close(struct fileio *fileio);
 
-int fileio_seek(struct fileio *fileio, uint32_t position);
-int fileio_fgets(struct fileio *fileio, uint32_t size, char *buffer);
+int fileio_seek(struct fileio *fileio, size_t position);
+int fileio_fgets(struct fileio *fileio, size_t size, void *buffer);
 
 int fileio_read(struct fileio *fileio,
-		uint32_t size, uint8_t *buffer, uint32_t *size_read);
+		size_t size, void *buffer, size_t *size_read);
 int fileio_write(struct fileio *fileio,
-		uint32_t size, const uint8_t *buffer, uint32_t *size_written);
+		size_t size, const void *buffer, size_t *size_written);
 
 int fileio_read_u32(struct fileio *fileio, uint32_t *data);
 int fileio_write_u32(struct fileio *fileio, uint32_t data);