X-Git-Url: http://git.ozlabs.org/?p=yaboot.git;a=blobdiff_plain;f=include%2Fext2fs%2Fext2_io.h;h=b9ba0b6a240009d923d976a948b5e7b37075464c;hp=9568866964cf201b039d6d717025fe821f318791;hb=da7857367944c983abf98f956241dcc614b2f453;hpb=0ef1539b6f680ba09c88be5bb94a821fd2599931

diff --git a/include/ext2fs/ext2_io.h b/include/ext2fs/ext2_io.h
index 9568866..b9ba0b6 100644
--- a/include/ext2fs/ext2_io.h
+++ b/include/ext2fs/ext2_io.h
@@ -27,6 +27,8 @@ ext2_loff_t ext2fs_llseek (int, ext2_loff_t, int);
 typedef struct struct_io_manager *io_manager;
 typedef struct struct_io_channel *io_channel;
 
+#define CHANNEL_FLAGS_WRITETHROUGH	0x01
+
 struct struct_io_channel {
 	errcode_t	magic;
 	io_manager	manager;
@@ -47,7 +49,8 @@ struct struct_io_channel {
 				       int actual_bytes_written,
 				       errcode_t error);
 	int		refcount;
-	int		reserved[15];
+	int		flags;
+	int		reserved[14];
 	void		*private_data;
 	void		*app_data;
 };
@@ -63,7 +66,9 @@ struct struct_io_manager {
 	errcode_t (*write_blk)(io_channel channel, unsigned long block,
 			       int count, const void *data);
 	errcode_t (*flush)(io_channel channel);
-	int		reserved[16];
+	errcode_t (*write_byte)(io_channel channel, unsigned long offset,
+				int count, const void *data);
+	int		reserved[15];
 };
 
 #define IO_FLAG_RW	1
@@ -76,6 +81,7 @@ struct struct_io_manager {
 #define io_channel_read_blk(c,b,n,d)	((c)->manager->read_blk((c),b,n,d))
 #define io_channel_write_blk(c,b,n,d)	((c)->manager->write_blk((c),b,n,d))
 #define io_channel_flush(c) 		((c)->manager->flush((c)))
+#define io_channel_write_byte(c,b,n,d)	((c)->manager->write_byte((c),b,n,d))
 #define io_channel_bumpcount(c)		((c)->refcount++)
 	
 /* unix_io.c */