From 4d4be482a4d78ca906f45e99fd9fdb91e907f5ad Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 9 Dec 2008 04:47:33 -0500 Subject: [XFS] add a FMODE flag to make XFS invisible I/O less hacky XFS has a mode called invisble I/O that doesn't update any of the timestamps. It's used for HSM-style applications and exposed through the nasty open by handle ioctl. Instead of doing directly assignment of file operations that set an internal flag for it add a new FMODE_NOCMTIME flag that we can check in the normal file operations. (addition of the generic VFS flag has been ACKed by Al as an interims solution) Signed-off-by: Christoph Hellwig Signed-off-by: Lachlan McIlroy --- fs/xfs/linux-2.6/xfs_ioctl32.c | 56 ++++++++++++++---------------------------- 1 file changed, 19 insertions(+), 37 deletions(-) (limited to 'fs/xfs/linux-2.6/xfs_ioctl32.c') diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c index b34b3d8892a2..0504cece9f66 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl32.c +++ b/fs/xfs/linux-2.6/xfs_ioctl32.c @@ -599,19 +599,24 @@ out: return error; } -STATIC long -xfs_compat_ioctl( - xfs_inode_t *ip, - struct file *filp, - int ioflags, - unsigned cmd, - void __user *arg) +long +xfs_file_compat_ioctl( + struct file *filp, + unsigned cmd, + unsigned long p) { - struct inode *inode = filp->f_path.dentry->d_inode; - xfs_mount_t *mp = ip->i_mount; - int error; + struct inode *inode = filp->f_path.dentry->d_inode; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + void __user *arg = (void __user *)p; + int ioflags = 0; + int error; + + if (filp->f_mode & FMODE_NOCMTIME) + ioflags |= IO_INVIS; + + xfs_itrace_entry(ip); - xfs_itrace_entry(XFS_I(inode)); switch (cmd) { /* No size or alignment issues on any arch */ case XFS_IOC_DIOINFO: @@ -632,7 +637,7 @@ xfs_compat_ioctl( case XFS_IOC_GOINGDOWN: case XFS_IOC_ERROR_INJECTION: case XFS_IOC_ERROR_CLEARALL: - return xfs_ioctl(ip, filp, ioflags, cmd, arg); + return xfs_file_ioctl(filp, cmd, p); #ifndef BROKEN_X86_ALIGNMENT /* These are handled fine if no alignment issues */ case XFS_IOC_ALLOCSP: @@ -646,7 +651,7 @@ xfs_compat_ioctl( case XFS_IOC_FSGEOMETRY_V1: case XFS_IOC_FSGROWFSDATA: case XFS_IOC_FSGROWFSRT: - return xfs_ioctl(ip, filp, ioflags, cmd, arg); + return xfs_file_ioctl(filp, cmd, p); #else case XFS_IOC_ALLOCSP_32: case XFS_IOC_FREESP_32: @@ -687,7 +692,7 @@ xfs_compat_ioctl( case XFS_IOC_SETXFLAGS_32: case XFS_IOC_GETVERSION_32: cmd = _NATIVE_IOC(cmd, long); - return xfs_ioctl(ip, filp, ioflags, cmd, arg); + return xfs_file_ioctl(filp, cmd, p); case XFS_IOC_SWAPEXT: { struct xfs_swapext sxp; struct compat_xfs_swapext __user *sxu = arg; @@ -738,26 +743,3 @@ xfs_compat_ioctl( return -XFS_ERROR(ENOIOCTLCMD); } } - -long -xfs_file_compat_ioctl( - struct file *filp, - unsigned int cmd, - unsigned long p) -{ - struct inode *inode = filp->f_path.dentry->d_inode; - - return xfs_compat_ioctl(XFS_I(inode), filp, 0, cmd, (void __user *)p); -} - -long -xfs_file_compat_invis_ioctl( - struct file *filp, - unsigned int cmd, - unsigned long p) -{ - struct inode *inode = filp->f_path.dentry->d_inode; - - return xfs_compat_ioctl(XFS_I(inode), filp, IO_INVIS, cmd, - (void __user *)p); -} -- cgit v1.2.3