Added resize c

1 files changed, 26 insertions, 0 deletions

diff --git a/core.c b/core.c
index 90f8fd9..7de3085 100644
--- a/core.c
+++ b/core.c
@@ -216,6 +216,32 @@ int file_size( file_t *ft )
 }
 
 
+int file_resize( file_t *ft, size_t size )
+{
+	int ret = 0;
+	off_t cur_pos;
+	off_t cur_size;
+	off_t resize;
+	uint8_t *buf;
+
+	cur_pos = fd_pos( ft->fd );
+	cur_size = fd_size( ft->fd );
+	if (cur_size < 0)
+	{
+		return -1;
+	}
+	buf = malloc( size );
+	memset( buf, 0, size );
+	fd_seek( ft->fd, cur_size, FD_SEEK_SET );
+	resize = fd_write( ft->fd, buf, size );
+	fd_seek( ft->fd, cur_pos, FD_SEEK_SET );
+
+	ret = resize;
+
+	return ret;
+}
+
+
 int file_open( file_t *ft, const char *filename, int flags, int mode )
 {
 	int ret = 0;