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[XFS] Add compat handlers for swapext ioctl

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The big hitter here was the bstat field, which contains
different sized time_t on 32 vs. 64 bit.  Add a copyin
function to translate the 32-bit arg to 64-bit, and
call the swapext ioctl helper.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
sandeen@sandeen.net
2008-11-25 21:20:09 -06:00
committed by Lachlan McIlroy
parent d5547f9fee
commit e94fc4a43e
2 changed files with 69 additions and 5 deletions
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13
fs/xfs/linux-2.6/xfs_ioctl32.h
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@@ -110,6 +110,19 @@ typedef struct compat_xfs_fsop_handlereq {
#define XFS_IOC_READLINK_BY_HANDLE_32 \
_IOWR('X', 108, struct compat_xfs_fsop_handlereq)
/* The bstat field in the swapext struct needs translation */
typedef struct compat_xfs_swapext {
__int64_t sx_version; /* version */
__int64_t sx_fdtarget; /* fd of target file */
__int64_t sx_fdtmp; /* fd of tmp file */
xfs_off_t sx_offset; /* offset into file */
xfs_off_t sx_length; /* leng from offset */
char sx_pad[16]; /* pad space, unused */
compat_xfs_bstat_t sx_stat; /* stat of target b4 copy */
} __compat_packed compat_xfs_swapext_t;
#define XFS_IOC_SWAPEXT_32 _IOWR('X', 109, struct compat_xfs_swapext)
#ifdef BROKEN_X86_ALIGNMENT
/* on ia32 l_start is on a 32-bit boundary */
typedef struct compat_xfs_flock64 {