[mirror_ubuntu-zesty-kernel.git] / fs / ext3 / ioctl.c

/*
 * linux/fs/ext3/ioctl.c
 *
 * Copyright (C) 1993, 1994, 1995
 * Remy Card (card@masi.ibp.fr)
 * Laboratoire MASI - Institut Blaise Pascal
 * Universite Pierre et Marie Curie (Paris VI)
 */

#include <linux/fs.h>
#include <linux/jbd.h>
#include <linux/capability.h>
#include <linux/ext3_fs.h>
#include <linux/ext3_jbd.h>
#include <linux/mount.h>
#include <linux/time.h>
#include <linux/compat.h>
#include <asm/uaccess.h>

long ext3_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
	struct inode *inode = filp->f_dentry->d_inode;
	struct ext3_inode_info *ei = EXT3_I(inode);
	unsigned int flags;
	unsigned short rsv_window_size;

	ext3_debug ("cmd = %u, arg = %lu\n", cmd, arg);

	switch (cmd) {
	case EXT3_IOC_GETFLAGS:
		ext3_get_inode_flags(ei);
		flags = ei->i_flags & EXT3_FL_USER_VISIBLE;
		return put_user(flags, (int __user *) arg);
	case EXT3_IOC_SETFLAGS: {
		handle_t *handle = NULL;
		int err;
		struct ext3_iloc iloc;
		unsigned int oldflags;
		unsigned int jflag;

		if (!inode_owner_or_capable(inode))
			return -EACCES;

		if (get_user(flags, (int __user *) arg))
			return -EFAULT;

		err = mnt_want_write(filp->f_path.mnt);
		if (err)
			return err;

		flags = ext3_mask_flags(inode->i_mode, flags);

		mutex_lock(&inode->i_mutex);

		/* Is it quota file? Do not allow user to mess with it */
		err = -EPERM;
		if (IS_NOQUOTA(inode))
			goto flags_out;

		oldflags = ei->i_flags;

		/* The JOURNAL_DATA flag is modifiable only by root */
		jflag = flags & EXT3_JOURNAL_DATA_FL;

		/*
		 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
		 * the relevant capability.
		 *
		 * This test looks nicer. Thanks to Pauline Middelink
		 */
		if ((flags ^ oldflags) & (EXT3_APPEND_FL | EXT3_IMMUTABLE_FL)) {
			if (!capable(CAP_LINUX_IMMUTABLE))
				goto flags_out;
		}

		/*
		 * The JOURNAL_DATA flag can only be changed by
		 * the relevant capability.
		 */
		if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL)) {
			if (!capable(CAP_SYS_RESOURCE))
				goto flags_out;
		}

		handle = ext3_journal_start(inode, 1);
		if (IS_ERR(handle)) {
			err = PTR_ERR(handle);
			goto flags_out;
		}
		if (IS_SYNC(inode))
			handle->h_sync = 1;
		err = ext3_reserve_inode_write(handle, inode, &iloc);
		if (err)
			goto flags_err;

		flags = flags & EXT3_FL_USER_MODIFIABLE;
		flags |= oldflags & ~EXT3_FL_USER_MODIFIABLE;
		ei->i_flags = flags;

		ext3_set_inode_flags(inode);
		inode->i_ctime = CURRENT_TIME_SEC;

		err = ext3_mark_iloc_dirty(handle, inode, &iloc);
flags_err:
		ext3_journal_stop(handle);
		if (err)
			goto flags_out;

		if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL))
			err = ext3_change_inode_journal_flag(inode, jflag);
flags_out:
		mutex_unlock(&inode->i_mutex);
		mnt_drop_write(filp->f_path.mnt);
		return err;
	}
	case EXT3_IOC_GETVERSION:
	case EXT3_IOC_GETVERSION_OLD:
		return put_user(inode->i_generation, (int __user *) arg);
	case EXT3_IOC_SETVERSION:
	case EXT3_IOC_SETVERSION_OLD: {
		handle_t *handle;
		struct ext3_iloc iloc;
		__u32 generation;
		int err;

		if (!inode_owner_or_capable(inode))
			return -EPERM;

		err = mnt_want_write(filp->f_path.mnt);
		if (err)
			return err;
		if (get_user(generation, (int __user *) arg)) {
			err = -EFAULT;
			goto setversion_out;
		}

		handle = ext3_journal_start(inode, 1);
		if (IS_ERR(handle)) {
			err = PTR_ERR(handle);
			goto setversion_out;
		}
		err = ext3_reserve_inode_write(handle, inode, &iloc);
		if (err == 0) {
			inode->i_ctime = CURRENT_TIME_SEC;
			inode->i_generation = generation;
			err = ext3_mark_iloc_dirty(handle, inode, &iloc);
		}
		ext3_journal_stop(handle);
setversion_out:
		mnt_drop_write(filp->f_path.mnt);
		return err;
	}
#ifdef CONFIG_JBD_DEBUG
	case EXT3_IOC_WAIT_FOR_READONLY:
		/*
		 * This is racy - by the time we're woken up and running,
		 * the superblock could be released.  And the module could
		 * have been unloaded.  So sue me.
		 *
		 * Returns 1 if it slept, else zero.
		 */
		{
			struct super_block *sb = inode->i_sb;
			DECLARE_WAITQUEUE(wait, current);
			int ret = 0;

			set_current_state(TASK_INTERRUPTIBLE);
			add_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
			if (timer_pending(&EXT3_SB(sb)->turn_ro_timer)) {
				schedule();
				ret = 1;
			}
			remove_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
			return ret;
		}
#endif
	case EXT3_IOC_GETRSVSZ:
		if (test_opt(inode->i_sb, RESERVATION)
			&& S_ISREG(inode->i_mode)
			&& ei->i_block_alloc_info) {
			rsv_window_size = ei->i_block_alloc_info->rsv_window_node.rsv_goal_size;
			return put_user(rsv_window_size, (int __user *)arg);
		}
		return -ENOTTY;
	case EXT3_IOC_SETRSVSZ: {
		int err;

		if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
			return -ENOTTY;

		err = mnt_want_write(filp->f_path.mnt);
		if (err)
			return err;

		if (!inode_owner_or_capable(inode)) {
			err = -EACCES;
			goto setrsvsz_out;
		}

		if (get_user(rsv_window_size, (int __user *)arg)) {
			err = -EFAULT;
			goto setrsvsz_out;
		}

		if (rsv_window_size > EXT3_MAX_RESERVE_BLOCKS)
			rsv_window_size = EXT3_MAX_RESERVE_BLOCKS;

		/*
		 * need to allocate reservation structure for this inode
		 * before set the window size
		 */
		mutex_lock(&ei->truncate_mutex);
		if (!ei->i_block_alloc_info)
			ext3_init_block_alloc_info(inode);

		if (ei->i_block_alloc_info){
			struct ext3_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
			rsv->rsv_goal_size = rsv_window_size;
		}
		mutex_unlock(&ei->truncate_mutex);
setrsvsz_out:
		mnt_drop_write(filp->f_path.mnt);
		return err;
	}
	case EXT3_IOC_GROUP_EXTEND: {
		ext3_fsblk_t n_blocks_count;
		struct super_block *sb = inode->i_sb;
		int err, err2;

		if (!capable(CAP_SYS_RESOURCE))
			return -EPERM;

		err = mnt_want_write(filp->f_path.mnt);
		if (err)
			return err;

		if (get_user(n_blocks_count, (__u32 __user *)arg)) {
			err = -EFAULT;
			goto group_extend_out;
		}
		err = ext3_group_extend(sb, EXT3_SB(sb)->s_es, n_blocks_count);
		journal_lock_updates(EXT3_SB(sb)->s_journal);
		err2 = journal_flush(EXT3_SB(sb)->s_journal);
		journal_unlock_updates(EXT3_SB(sb)->s_journal);
		if (err == 0)
			err = err2;
group_extend_out:
		mnt_drop_write(filp->f_path.mnt);
		return err;
	}
	case EXT3_IOC_GROUP_ADD: {
		struct ext3_new_group_data input;
		struct super_block *sb = inode->i_sb;
		int err, err2;

		if (!capable(CAP_SYS_RESOURCE))
			return -EPERM;

		err = mnt_want_write(filp->f_path.mnt);
		if (err)
			return err;

		if (copy_from_user(&input, (struct ext3_new_group_input __user *)arg,
				sizeof(input))) {
			err = -EFAULT;
			goto group_add_out;
		}

		err = ext3_group_add(sb, &input);
		journal_lock_updates(EXT3_SB(sb)->s_journal);
		err2 = journal_flush(EXT3_SB(sb)->s_journal);
		journal_unlock_updates(EXT3_SB(sb)->s_journal);
		if (err == 0)
			err = err2;
group_add_out:
		mnt_drop_write(filp->f_path.mnt);
		return err;
	}
	case FITRIM: {

		struct super_block *sb = inode->i_sb;
		struct fstrim_range range;
		int ret = 0;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (copy_from_user(&range, (struct fstrim_range *)arg,
				   sizeof(range)))
			return -EFAULT;

		ret = ext3_trim_fs(sb, &range);
		if (ret < 0)
			return ret;

		if (copy_to_user((struct fstrim_range *)arg, &range,
				 sizeof(range)))
			return -EFAULT;

		return 0;
	}

	default:
		return -ENOTTY;
	}
}

#ifdef CONFIG_COMPAT
long ext3_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	/* These are just misnamed, they actually get/put from/to user an int */
	switch (cmd) {
	case EXT3_IOC32_GETFLAGS:
		cmd = EXT3_IOC_GETFLAGS;
		break;
	case EXT3_IOC32_SETFLAGS:
		cmd = EXT3_IOC_SETFLAGS;
		break;
	case EXT3_IOC32_GETVERSION:
		cmd = EXT3_IOC_GETVERSION;
		break;
	case EXT3_IOC32_SETVERSION:
		cmd = EXT3_IOC_SETVERSION;
		break;
	case EXT3_IOC32_GROUP_EXTEND:
		cmd = EXT3_IOC_GROUP_EXTEND;
		break;
	case EXT3_IOC32_GETVERSION_OLD:
		cmd = EXT3_IOC_GETVERSION_OLD;
		break;
	case EXT3_IOC32_SETVERSION_OLD:
		cmd = EXT3_IOC_SETVERSION_OLD;
		break;
#ifdef CONFIG_JBD_DEBUG
	case EXT3_IOC32_WAIT_FOR_READONLY:
		cmd = EXT3_IOC_WAIT_FOR_READONLY;
		break;
#endif
	case EXT3_IOC32_GETRSVSZ:
		cmd = EXT3_IOC_GETRSVSZ;
		break;
	case EXT3_IOC32_SETRSVSZ:
		cmd = EXT3_IOC_SETRSVSZ;
		break;
	case EXT3_IOC_GROUP_ADD:
		break;
	default:
		return -ENOIOCTLCMD;
	}
	return ext3_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
}
#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/fs/ext3/ioctl.c
	3	*
	4	* Copyright (C) 1993, 1994, 1995
	5	* Remy Card (card@masi.ibp.fr)
	6	* Laboratoire MASI - Institut Blaise Pascal
	7	* Universite Pierre et Marie Curie (Paris VI)
	8	*/
	9
	10	#include <linux/fs.h>
	11	#include <linux/jbd.h>
16f7e0fe	12	#include <linux/capability.h>
1da177e4 LT	13	#include <linux/ext3_fs.h>
1da177e4 LT	14	#include <linux/ext3_jbd.h>
42a74f20	15	#include <linux/mount.h>
1da177e4	16	#include <linux/time.h>
52a700c5	17	#include <linux/compat.h>
1da177e4 LT	18	#include <asm/uaccess.h>
1da177e4 LT	19
039fd8ce	20	long ext3_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1da177e4	21	{
039fd8ce	22	struct inode *inode = filp->f_dentry->d_inode;
1da177e4 LT	23	struct ext3_inode_info *ei = EXT3_I(inode);
	24	unsigned int flags;
	25	unsigned short rsv_window_size;
	26
	27	ext3_debug ("cmd = %u, arg = %lu\n", cmd, arg);
	28
	29	switch (cmd) {
	30	case EXT3_IOC_GETFLAGS:
28be5abb	31	ext3_get_inode_flags(ei);
1da177e4 LT	32	flags = ei->i_flags & EXT3_FL_USER_VISIBLE;
	33	return put_user(flags, (int __user *) arg);
	34	case EXT3_IOC_SETFLAGS: {
	35	handle_t *handle = NULL;
	36	int err;
	37	struct ext3_iloc iloc;
	38	unsigned int oldflags;
	39	unsigned int jflag;
	40
2e149670	41	if (!inode_owner_or_capable(inode))
039fd8ce CM	42	return -EACCES;
	43
	44	if (get_user(flags, (int __user *) arg))
	45	return -EFAULT;
	46
42a74f20 DH	47	err = mnt_want_write(filp->f_path.mnt);
	48	if (err)
	49	return err;
1da177e4	50
04143e2f	51	flags = ext3_mask_flags(inode->i_mode, flags);
1da177e4	52
a090d913	53	mutex_lock(&inode->i_mutex);
039fd8ce	54
e47776a0	55	/* Is it quota file? Do not allow user to mess with it */
039fd8ce CM	56	err = -EPERM;
039fd8ce CM	57	if (IS_NOQUOTA(inode))
42a74f20	58	goto flags_out;
039fd8ce	59
1da177e4 LT	60	oldflags = ei->i_flags;
	61
	62	/* The JOURNAL_DATA flag is modifiable only by root */
	63	jflag = flags & EXT3_JOURNAL_DATA_FL;
	64
	65	/*
	66	* The IMMUTABLE and APPEND_ONLY flags can only be changed by
	67	* the relevant capability.
	68	*
	69	* This test looks nicer. Thanks to Pauline Middelink
	70	*/
	71	if ((flags ^ oldflags) & (EXT3_APPEND_FL \| EXT3_IMMUTABLE_FL)) {
039fd8ce	72	if (!capable(CAP_LINUX_IMMUTABLE))
42a74f20	73	goto flags_out;
1da177e4 LT	74	}
	75
	76	/*
	77	* The JOURNAL_DATA flag can only be changed by
	78	* the relevant capability.
	79	*/
	80	if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL)) {
039fd8ce	81	if (!capable(CAP_SYS_RESOURCE))
42a74f20	82	goto flags_out;
1da177e4 LT	83	}
1da177e4 LT	84
1da177e4	85	handle = ext3_journal_start(inode, 1);
a090d913	86	if (IS_ERR(handle)) {
42a74f20 DH	87	err = PTR_ERR(handle);
42a74f20 DH	88	goto flags_out;
a090d913	89	}
1da177e4 LT	90	if (IS_SYNC(inode))
	91	handle->h_sync = 1;
	92	err = ext3_reserve_inode_write(handle, inode, &iloc);
	93	if (err)
	94	goto flags_err;
	95
	96	flags = flags & EXT3_FL_USER_MODIFIABLE;
	97	flags \|= oldflags & ~EXT3_FL_USER_MODIFIABLE;
	98	ei->i_flags = flags;
	99
	100	ext3_set_inode_flags(inode);
	101	inode->i_ctime = CURRENT_TIME_SEC;
	102
	103	err = ext3_mark_iloc_dirty(handle, inode, &iloc);
	104	flags_err:
	105	ext3_journal_stop(handle);
039fd8ce CM	106	if (err)
039fd8ce CM	107	goto flags_out;
1da177e4 LT	108
	109	if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL))
	110	err = ext3_change_inode_journal_flag(inode, jflag);
42a74f20	111	flags_out:
039fd8ce	112	mutex_unlock(&inode->i_mutex);
42a74f20	113	mnt_drop_write(filp->f_path.mnt);
1da177e4 LT	114	return err;
	115	}
	116	case EXT3_IOC_GETVERSION:
	117	case EXT3_IOC_GETVERSION_OLD:
	118	return put_user(inode->i_generation, (int __user *) arg);
	119	case EXT3_IOC_SETVERSION:
	120	case EXT3_IOC_SETVERSION_OLD: {
	121	handle_t *handle;
	122	struct ext3_iloc iloc;
	123	__u32 generation;
	124	int err;
	125
2e149670	126	if (!inode_owner_or_capable(inode))
1da177e4	127	return -EPERM;
039fd8ce	128
42a74f20 DH	129	err = mnt_want_write(filp->f_path.mnt);
	130	if (err)
	131	return err;
	132	if (get_user(generation, (int __user *) arg)) {
	133	err = -EFAULT;
	134	goto setversion_out;
	135	}
039fd8ce	136
1da177e4	137	handle = ext3_journal_start(inode, 1);
42a74f20 DH	138	if (IS_ERR(handle)) {
	139	err = PTR_ERR(handle);
	140	goto setversion_out;
	141	}
1da177e4 LT	142	err = ext3_reserve_inode_write(handle, inode, &iloc);
	143	if (err == 0) {
	144	inode->i_ctime = CURRENT_TIME_SEC;
	145	inode->i_generation = generation;
	146	err = ext3_mark_iloc_dirty(handle, inode, &iloc);
	147	}
	148	ext3_journal_stop(handle);
42a74f20 DH	149	setversion_out:
42a74f20 DH	150	mnt_drop_write(filp->f_path.mnt);
1da177e4 LT	151	return err;
	152	}
	153	#ifdef CONFIG_JBD_DEBUG
	154	case EXT3_IOC_WAIT_FOR_READONLY:
	155	/*
	156	* This is racy - by the time we're woken up and running,
	157	* the superblock could be released. And the module could
	158	* have been unloaded. So sue me.
	159	*
	160	* Returns 1 if it slept, else zero.
	161	*/
	162	{
	163	struct super_block *sb = inode->i_sb;
	164	DECLARE_WAITQUEUE(wait, current);
	165	int ret = 0;
	166
	167	set_current_state(TASK_INTERRUPTIBLE);
	168	add_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
	169	if (timer_pending(&EXT3_SB(sb)->turn_ro_timer)) {
	170	schedule();
	171	ret = 1;
	172	}
	173	remove_wait_queue(&EXT3_SB(sb)->ro_wait_queue, &wait);
	174	return ret;
	175	}
	176	#endif
	177	case EXT3_IOC_GETRSVSZ:
	178	if (test_opt(inode->i_sb, RESERVATION)
	179	&& S_ISREG(inode->i_mode)
	180	&& ei->i_block_alloc_info) {
	181	rsv_window_size = ei->i_block_alloc_info->rsv_window_node.rsv_goal_size;
	182	return put_user(rsv_window_size, (int __user *)arg);
	183	}
	184	return -ENOTTY;
	185	case EXT3_IOC_SETRSVSZ: {
42a74f20	186	int err;
1da177e4 LT	187
	188	if (!test_opt(inode->i_sb, RESERVATION) \|\|!S_ISREG(inode->i_mode))
	189	return -ENOTTY;
	190
42a74f20 DH	191	err = mnt_want_write(filp->f_path.mnt);
	192	if (err)
	193	return err;
1da177e4	194
2e149670	195	if (!inode_owner_or_capable(inode)) {
42a74f20 DH	196	err = -EACCES;
	197	goto setrsvsz_out;
	198	}
1da177e4	199
42a74f20 DH	200	if (get_user(rsv_window_size, (int __user *)arg)) {
	201	err = -EFAULT;
	202	goto setrsvsz_out;
	203	}
1da177e4 LT	204
	205	if (rsv_window_size > EXT3_MAX_RESERVE_BLOCKS)
	206	rsv_window_size = EXT3_MAX_RESERVE_BLOCKS;
	207
	208	/*
	209	* need to allocate reservation structure for this inode
	210	* before set the window size
	211	*/
97461518	212	mutex_lock(&ei->truncate_mutex);
1da177e4 LT	213	if (!ei->i_block_alloc_info)
	214	ext3_init_block_alloc_info(inode);
	215
	216	if (ei->i_block_alloc_info){
	217	struct ext3_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
	218	rsv->rsv_goal_size = rsv_window_size;
	219	}
97461518	220	mutex_unlock(&ei->truncate_mutex);
42a74f20 DH	221	setrsvsz_out:
	222	mnt_drop_write(filp->f_path.mnt);
	223	return err;
1da177e4 LT	224	}
1da177e4 LT	225	case EXT3_IOC_GROUP_EXTEND: {
43d23f90	226	ext3_fsblk_t n_blocks_count;
1da177e4	227	struct super_block *sb = inode->i_sb;
2d7c820e	228	int err, err2;
1da177e4 LT	229
	230	if (!capable(CAP_SYS_RESOURCE))
	231	return -EPERM;
	232
42a74f20 DH	233	err = mnt_want_write(filp->f_path.mnt);
	234	if (err)
	235	return err;
1da177e4	236
42a74f20 DH	237	if (get_user(n_blocks_count, (__u32 __user *)arg)) {
	238	err = -EFAULT;
	239	goto group_extend_out;
	240	}
1da177e4 LT	241	err = ext3_group_extend(sb, EXT3_SB(sb)->s_es, n_blocks_count);
1da177e4 LT	242	journal_lock_updates(EXT3_SB(sb)->s_journal);
2d7c820e	243	err2 = journal_flush(EXT3_SB(sb)->s_journal);
1da177e4	244	journal_unlock_updates(EXT3_SB(sb)->s_journal);
2d7c820e HK	245	if (err == 0)
2d7c820e HK	246	err = err2;
42a74f20 DH	247	group_extend_out:
42a74f20 DH	248	mnt_drop_write(filp->f_path.mnt);
1da177e4 LT	249	return err;
	250	}
	251	case EXT3_IOC_GROUP_ADD: {
	252	struct ext3_new_group_data input;
	253	struct super_block *sb = inode->i_sb;
2d7c820e	254	int err, err2;
1da177e4 LT	255
	256	if (!capable(CAP_SYS_RESOURCE))
	257	return -EPERM;
	258
42a74f20 DH	259	err = mnt_want_write(filp->f_path.mnt);
	260	if (err)
	261	return err;
1da177e4 LT	262
1da177e4 LT	263	if (copy_from_user(&input, (struct ext3_new_group_input __user *)arg,
42a74f20 DH	264	sizeof(input))) {
	265	err = -EFAULT;
	266	goto group_add_out;
	267	}
1da177e4 LT	268
	269	err = ext3_group_add(sb, &input);
	270	journal_lock_updates(EXT3_SB(sb)->s_journal);
2d7c820e	271	err2 = journal_flush(EXT3_SB(sb)->s_journal);
1da177e4	272	journal_unlock_updates(EXT3_SB(sb)->s_journal);
2d7c820e HK	273	if (err == 0)
2d7c820e HK	274	err = err2;
42a74f20 DH	275	group_add_out:
42a74f20 DH	276	mnt_drop_write(filp->f_path.mnt);
1da177e4 LT	277	return err;
1da177e4 LT	278	}
9c527492	279	case FITRIM: {
1da177e4	280
9c527492 LC	281	struct super_block *sb = inode->i_sb;
	282	struct fstrim_range range;
	283	int ret = 0;
	284
	285	if (!capable(CAP_SYS_ADMIN))
	286	return -EPERM;
	287
	288	if (copy_from_user(&range, (struct fstrim_range *)arg,
	289	sizeof(range)))
	290	return -EFAULT;
	291
	292	ret = ext3_trim_fs(sb, &range);
	293	if (ret < 0)
	294	return ret;
	295
	296	if (copy_to_user((struct fstrim_range *)arg, &range,
	297	sizeof(range)))
	298	return -EFAULT;
	299
	300	return 0;
	301	}
1da177e4 LT	302
	303	default:
	304	return -ENOTTY;
	305	}
	306	}
52a700c5 DH	307
	308	#ifdef CONFIG_COMPAT
	309	long ext3_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
	310	{
52a700c5 DH	311	/* These are just misnamed, they actually get/put from/to user an int */
	312	switch (cmd) {
	313	case EXT3_IOC32_GETFLAGS:
	314	cmd = EXT3_IOC_GETFLAGS;
	315	break;
	316	case EXT3_IOC32_SETFLAGS:
	317	cmd = EXT3_IOC_SETFLAGS;
	318	break;
	319	case EXT3_IOC32_GETVERSION:
	320	cmd = EXT3_IOC_GETVERSION;
	321	break;
	322	case EXT3_IOC32_SETVERSION:
	323	cmd = EXT3_IOC_SETVERSION;
	324	break;
	325	case EXT3_IOC32_GROUP_EXTEND:
	326	cmd = EXT3_IOC_GROUP_EXTEND;
	327	break;
	328	case EXT3_IOC32_GETVERSION_OLD:
	329	cmd = EXT3_IOC_GETVERSION_OLD;
	330	break;
	331	case EXT3_IOC32_SETVERSION_OLD:
	332	cmd = EXT3_IOC_SETVERSION_OLD;
	333	break;
	334	#ifdef CONFIG_JBD_DEBUG
	335	case EXT3_IOC32_WAIT_FOR_READONLY:
	336	cmd = EXT3_IOC_WAIT_FOR_READONLY;
	337	break;
	338	#endif
	339	case EXT3_IOC32_GETRSVSZ:
	340	cmd = EXT3_IOC_GETRSVSZ;
	341	break;
	342	case EXT3_IOC32_SETRSVSZ:
	343	cmd = EXT3_IOC_SETRSVSZ;
	344	break;
	345	case EXT3_IOC_GROUP_ADD:
	346	break;
	347	default:
	348	return -ENOIOCTLCMD;
	349	}
039fd8ce	350	return ext3_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
52a700c5 DH	351	}
52a700c5 DH	352	#endif