X-Git-Url: http://git.ozlabs.org/?p=yaboot.git;a=blobdiff_plain;f=include%2Fext2fs%2Fext2_io.h;h=124215415c6bd1552c8467789d628cabe3862bae;hp=9568866964cf201b039d6d717025fe821f318791;hb=5d4289bddaef010cc14bcbeecfd13d5068b50a8e;hpb=f4ebbd9f7ea23e3f0fcbe098754580c220894628

diff --git a/include/ext2fs/ext2_io.h b/include/ext2fs/ext2_io.h
index 9568866..1242154 100644
--- a/include/ext2fs/ext2_io.h
+++ b/include/ext2fs/ext2_io.h
@@ -1,6 +1,6 @@
 /*
  * io.h --- the I/O manager abstraction
- * 
+ *
  * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
  *
  * %Begin-Header%
@@ -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
@@ -76,8 +81,9 @@ 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 */
 extern io_manager unix_io_manager;
 
@@ -91,4 +97,4 @@ extern void (*test_io_cb_set_blksize)
 	(int blksize, errcode_t err);
 
 #endif /* _EXT2FS_EXT2_IO_H */
-	
+