From 547e00c3c681265b1fe5e34c7643f3ddac748ba0 Mon Sep 17 00:00:00 2001 From: Michal Marek Date: Wed, 11 Jul 2007 11:09:57 +1000 Subject: [PATCH] [XFS] Compat ioctl handler for XFS_IOC_FSGEOMETRY_V1. i386 struct xfs_fsop_geom_v1 has no padding after the last member, so the size is different. SGI-PV: 967354 SGI-Modid: xfs-linux-melb:xfs-kern:29100a Signed-off-by: Michal Marek Signed-off-by: David Chinner Signed-off-by: Tim Shimmin --- fs/xfs/linux-2.6/xfs_ioctl32.c | 42 +++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c index b83cebc165f..5b91335e97d 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl32.c +++ b/fs/xfs/linux-2.6/xfs_ioctl32.c @@ -75,6 +75,42 @@ xfs_ioctl32_flock( return (unsigned long)p; } +typedef struct compat_xfs_fsop_geom_v1 { + __u32 blocksize; /* filesystem (data) block size */ + __u32 rtextsize; /* realtime extent size */ + __u32 agblocks; /* fsblocks in an AG */ + __u32 agcount; /* number of allocation groups */ + __u32 logblocks; /* fsblocks in the log */ + __u32 sectsize; /* (data) sector size, bytes */ + __u32 inodesize; /* inode size in bytes */ + __u32 imaxpct; /* max allowed inode space(%) */ + __u64 datablocks; /* fsblocks in data subvolume */ + __u64 rtblocks; /* fsblocks in realtime subvol */ + __u64 rtextents; /* rt extents in realtime subvol*/ + __u64 logstart; /* starting fsblock of the log */ + unsigned char uuid[16]; /* unique id of the filesystem */ + __u32 sunit; /* stripe unit, fsblocks */ + __u32 swidth; /* stripe width, fsblocks */ + __s32 version; /* structure version */ + __u32 flags; /* superblock version flags */ + __u32 logsectsize; /* log sector size, bytes */ + __u32 rtsectsize; /* realtime sector size, bytes */ + __u32 dirblocksize; /* directory block size, bytes */ +} __attribute__((packed)) compat_xfs_fsop_geom_v1_t; + +#define XFS_IOC_FSGEOMETRY_V1_32 \ + _IOR ('X', 100, struct compat_xfs_fsop_geom_v1) + +STATIC unsigned long xfs_ioctl32_geom_v1(unsigned long arg) +{ + compat_xfs_fsop_geom_v1_t __user *p32 = (void __user *)arg; + xfs_fsop_geom_v1_t __user *p = compat_alloc_user_space(sizeof(*p)); + + if (copy_in_user(p, p32, sizeof(*p32))) + return -EFAULT; + return (unsigned long)p; +} + #else typedef struct xfs_fsop_bulkreq32 { @@ -118,7 +154,6 @@ xfs_compat_ioctl( switch (cmd) { case XFS_IOC_DIOINFO: - case XFS_IOC_FSGEOMETRY_V1: case XFS_IOC_FSGEOMETRY: case XFS_IOC_GETVERSION: case XFS_IOC_GETXFLAGS: @@ -166,6 +201,10 @@ xfs_compat_ioctl( arg = xfs_ioctl32_flock(arg); cmd = _NATIVE_IOC(cmd, struct xfs_flock64); break; + case XFS_IOC_FSGEOMETRY_V1_32: + arg = xfs_ioctl32_geom_v1(arg); + cmd = _NATIVE_IOC(cmd, struct xfs_fsop_geom_v1); + break; #else /* These are handled fine if no alignment issues */ case XFS_IOC_ALLOCSP: @@ -176,6 +215,7 @@ xfs_compat_ioctl( case XFS_IOC_FREESP64: case XFS_IOC_RESVSP64: case XFS_IOC_UNRESVSP64: + case XFS_IOC_FSGEOMETRY_V1: break; /* xfs_bstat_t still has wrong u32 vs u64 alignment */ -- 2.41.1