[GFS2] Remove ioctl support

The various flags on inodes will in future be set and queried
via the extended attributes interface, so this interface is no
longer required.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/ops_file.c

@@ -17,7 +17,6 @@
 #include <linux/blkdev.h>
 #include <linux/mm.h>
 #include <linux/smp_lock.h>
-#include <linux/gfs2_ioctl.h>
 #include <linux/fs.h>
 #include <linux/gfs2_ondisk.h>
 #include <asm/semaphore.h>
@@ -532,98 +531,6 @@ static int gfs2_readdir(struct file *file, void *dirent, filldir_t filldir)
 	return error;
 }
 
-static int gfs2_ioctl_flags(struct gfs2_inode *ip, unsigned int cmd,
-			    unsigned long arg)
-{
-	unsigned int lmode = (cmd == GFS2_IOCTL_SETFLAGS) ?
-			     LM_ST_EXCLUSIVE : LM_ST_SHARED;
-	struct buffer_head *dibh;
-	struct gfs2_holder i_gh;
-	int error;
-	__u32 flags = 0, change;
-
-	if (cmd == GFS2_IOCTL_SETFLAGS) {
-		error = get_user(flags, (__u32 __user *)arg);
-		if (error)
-			return -EFAULT;
-	}
-
-	error = gfs2_glock_nq_init(ip->i_gl, lmode, 0, &i_gh);
-	if (error)
-		return error;
-
-	if (cmd == GFS2_IOCTL_SETFLAGS) {
-		change = flags ^ ip->i_di.di_flags;
-		error = -EPERM;
-		if (change & (GFS2_DIF_IMMUTABLE|GFS2_DIF_APPENDONLY)) {
-			if (!capable(CAP_LINUX_IMMUTABLE))
-				goto out;
-		}
-		error = -EINVAL;
-		if (flags & (GFS2_DIF_JDATA|GFS2_DIF_DIRECTIO)) {
-			if (!S_ISREG(ip->i_di.di_mode))
-				goto out;
-		}
-		if (flags &
-		    (GFS2_DIF_INHERIT_JDATA|GFS2_DIF_INHERIT_DIRECTIO)) {
-			if (!S_ISDIR(ip->i_di.di_mode))
-				goto out;
-		}
-
-		error = gfs2_trans_begin(ip->i_sbd, RES_DINODE, 0);
-		if (error)
-			goto out;
-
-		error = gfs2_meta_inode_buffer(ip, &dibh);
-		if (error)
-			goto out_trans_end;
-
-		ip->i_di.di_flags = flags;
-
-		gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-        	gfs2_dinode_out(&ip->i_di, dibh->b_data);
-
-        	brelse(dibh);
-
-out_trans_end:
-		gfs2_trans_end(ip->i_sbd);
-	} else {
-		flags = ip->i_di.di_flags;
-	}
-out:
-	gfs2_glock_dq_uninit(&i_gh);
-	if (cmd == GFS2_IOCTL_GETFLAGS) {
-		if (put_user(flags, (__u32 __user *)arg))
-			return -EFAULT;
-	}
-	return error;
-}
-
-/**
- * gfs2_ioctl - do an ioctl on a file
- * @inode: the inode
- * @file: the file pointer
- * @cmd: the ioctl command
- * @arg: the argument
- *
- * Returns: errno
- */
-
-static int gfs2_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-		      unsigned long arg)
-{
-	struct gfs2_inode *ip = inode->u.generic_ip;
-
-	switch (cmd) {
-	case GFS2_IOCTL_SETFLAGS:
-	case GFS2_IOCTL_GETFLAGS:
-		return gfs2_ioctl_flags(ip, cmd, arg);
-
-	default:
-		return -ENOTTY;
-	}
-}
-
 /**
  * gfs2_mmap -
  * @file: The file to map
@@ -925,7 +832,6 @@ struct file_operations gfs2_file_fops = {
 	.write = generic_file_write,
 	.writev = generic_file_writev,
 	.aio_write = generic_file_aio_write,
-	.ioctl = gfs2_ioctl,
 	.mmap = gfs2_mmap,
 	.open = gfs2_open,
 	.release = gfs2_close,
@@ -937,7 +843,6 @@ struct file_operations gfs2_file_fops = {
 
 struct file_operations gfs2_dir_fops = {
 	.readdir = gfs2_readdir,
-	.ioctl = gfs2_ioctl,
 	.open = gfs2_open,
 	.release = gfs2_close,
 	.fsync = gfs2_fsync,