From 9ef30d61783eb738040eefb1bbacdc50b39bf7d5 Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Tue, 24 Aug 2010 12:04:24 +0200
Subject: include: cleanup blkdev.h

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 include/blkdev.h | 79 ++++++++++++++++++++++++++++++--------------------------
 1 file changed, 42 insertions(+), 37 deletions(-)

(limited to 'include/blkdev.h')

diff --git a/include/blkdev.h b/include/blkdev.h
index 2179c6ed8..5344a2bab 100644
--- a/include/blkdev.h
+++ b/include/blkdev.h
@@ -8,52 +8,57 @@
 
 #define DEFAULT_SECTOR_SIZE       512
 
-#if !defined(BLKROSET) && defined(__linux__)
-
-#define BLKROSET   _IO(0x12,93)	/* set device read-only (0 = read-write) */
-#define BLKROGET   _IO(0x12,94)	/* get read-only status (0 = read_write) */
-#define BLKRRPART  _IO(0x12,95)	/* re-read partition table */
-#define BLKGETSIZE _IO(0x12,96)	/* return device size /512 (long *arg) */
-#define BLKFLSBUF  _IO(0x12,97)	/* flush buffer cache */
-#define BLKRASET   _IO(0x12,98)	/* set read ahead for block device */
-#define BLKRAGET   _IO(0x12,99)	/* get current read ahead setting */
-#define BLKFRASET  _IO(0x12,100)/* set filesystem (mm/filemap.c) read-ahead */
-#define BLKFRAGET  _IO(0x12,101)/* get filesystem (mm/filemap.c) read-ahead */
-#define BLKSECTSET _IO(0x12,102)/* set max sectors per request (ll_rw_blk.c) */
-#define BLKSECTGET _IO(0x12,103)/* get max sectors per request (ll_rw_blk.c) */
-#define BLKSSZGET  _IO(0x12,104)/* get block device sector size */
+#ifdef __linux__
+/* very basic ioclts, should be available everywhere */
+# ifndef BLKROSET
+#  define BLKROSET   _IO(0x12,93)	/* set device read-only (0 = read-write) */
+#  define BLKROGET   _IO(0x12,94)	/* get read-only status (0 = read_write) */
+#  define BLKRRPART  _IO(0x12,95)	/* re-read partition table */
+#  define BLKGETSIZE _IO(0x12,96)	/* return device size /512 (long *arg) */
+#  define BLKFLSBUF  _IO(0x12,97)	/* flush buffer cache */
+#  define BLKRASET   _IO(0x12,98)	/* set read ahead for block device */
+#  define BLKRAGET   _IO(0x12,99)	/* get current read ahead setting */
+#  define BLKFRASET  _IO(0x12,100)	/* set filesystem (mm/filemap.c) read-ahead */
+#  define BLKFRAGET  _IO(0x12,101)	/* get filesystem (mm/filemap.c) read-ahead */
+#  define BLKSECTSET _IO(0x12,102)	/* set max sectors per request (ll_rw_blk.c) */
+#  define BLKSECTGET _IO(0x12,103)	/* get max sectors per request (ll_rw_blk.c) */
+#  define BLKSSZGET  _IO(0x12,104)	/* get block device sector size */
 
 /* ioctls introduced in 2.2.16, removed in 2.5.58 */
-#define BLKELVGET  _IOR(0x12,106,size_t) /* elevator get */
-#define BLKELVSET  _IOW(0x12,107,size_t) /* elevator set */
+#  define BLKELVGET  _IOR(0x12,106,size_t) /* elevator get */
+#  define BLKELVSET  _IOW(0x12,107,size_t) /* elevator set */
 
-#define BLKBSZGET  _IOR(0x12,112,size_t)
-#define BLKBSZSET  _IOW(0x12,113,size_t)
-#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
+#  define BLKBSZGET  _IOR(0x12,112,size_t)
+#  define BLKBSZSET  _IOW(0x12,113,size_t)
+# endif /* !BLKROSET */
 
-#endif /* BLKROSET && __linux__ */
+# ifndef BLKGETSIZE64
+#  define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
+# endif
 
+/* block device topology ioctls, introduced in 2.6.32 (commit ac481c20) */
+# ifndef BLKIOMIN
+#  define BLKIOMIN   _IO(0x12,120)
+#  define BLKIOOPT   _IO(0x12,121)
+#  define BLKALIGNOFF _IO(0x12,122)
+#  define BLKPBSZGET _IO(0x12,123)
+# endif
 
-#ifdef APPLE_DARWIN
-#define BLKGETSIZE DKIOCGETBLOCKCOUNT32
-#endif
+/* discard zeroes support, introduced in 2.6.33 (commit 98262f27) */
+# ifndef BLKDISCARDZEROES
+#  define BLKDISCARDZEROES _IO(0x12,124)
+# endif
 
-/* block device topology ioctls, introduced in 2.6.32 */
-#ifndef BLKIOMIN
-#define BLKIOMIN   _IO(0x12,120)
-#define BLKIOOPT   _IO(0x12,121)
-#define BLKALIGNOFF _IO(0x12,122)
-#define BLKPBSZGET _IO(0x12,123)
-#endif
+/* filesystem freeze, introduced in 2.6.29 (commit fcccf502) */
+# ifndef FIFREEZE
+#  define FIFREEZE   _IOWR('X', 119, int)    /* Freeze */
+#  define FITHAW     _IOWR('X', 120, int)    /* Thaw */
+# endif
 
-/* discard zeroes support, introduced in 2.6.33 (commait 98262f27) */
-#ifndef BLKDISCARDZEROES
-#define BLKDISCARDZEROES _IO(0x12,124)
-#endif
+#endif /* __linux */
 
-#ifndef FIFREEZE
-#define FIFREEZE   _IOWR('X', 119, int)    /* Freeze */
-#define FITHAW     _IOWR('X', 120, int)    /* Thaw */
+#ifdef APPLE_DARWIN
+# define BLKGETSIZE DKIOCGETBLOCKCOUNT32
 #endif
 
 #ifndef HDIO_GETGEO
-- 
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