[patch] ioctl BLKGETSIZE64 fix
Hello,
Two years ago, "[PATCH] use size_t for the broken ioctl numbers" brought in the problem.
<http://lkml.org/lkml/2003/9/7/14> (also FYI: <https://lwn.net/Articles/48360/>)
The patch below fixes the bug on BLKGETSIZE64. typeof(size_t) == 32, but we expect 64.
The choice of `size_t' is also a mistake. We should have taken `int'. This also affects
userland linux-kernel-headers.
Or am I missing something? Thanks.
Coywolf
Signed-off-by: Coywolf Qi Hunt <qiyong@fc-cn.com>
---
diff -pruN 2.6.15-rc5-mm3/include/linux/fs.h 2.6.15-rc5-mm3~BLKGETSIZE64-fix/include/linux/fs.h
--- 2.6.15-rc5-mm3/include/linux/fs.h 2005-12-15 16:55:22.000000000 +0800
+++ 2.6.15-rc5-mm3~BLKGETSIZE64-fix/include/linux/fs.h 2005-12-15 20:08:52.000000000 +0800
@@ -197,7 +197,7 @@ extern int dir_notify_enable;
/* A jump here: 108-111 have been used for various private purposes. */
#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 BLKGETSIZE64 _IOR(0x12,114,u64) /* return device size in bytes (u64 *arg) */
#define BLKSTARTTRACE _IOWR(0x12,115,struct blk_user_trace_setup)
#define BLKSTOPTRACE _IO(0x12,116)
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