[deliverable/linux.git] / fs / ext4 / ioctl.c

/*
 * linux/fs/ext4/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/jbd2.h>
#include <linux/capability.h>
#include <linux/ext4_fs.h>
#include <linux/ext4_jbd2.h>
#include <linux/time.h>
#include <linux/compat.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>

int ext4_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
		unsigned long arg)
{
	struct ext4_inode_info *ei = EXT4_I(inode);
	unsigned int flags;
	unsigned short rsv_window_size;

	ext4_debug ("cmd = %u, arg = %lu\n", cmd, arg);

	switch (cmd) {
	case EXT4_IOC_GETFLAGS:
		ext4_get_inode_flags(ei);
		flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
		return put_user(flags, (int __user *) arg);
	case EXT4_IOC_SETFLAGS: {
		handle_t *handle = NULL;
		int err;
		struct ext4_iloc iloc;
		unsigned int oldflags;
		unsigned int jflag;

		if (IS_RDONLY(inode))
			return -EROFS;

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

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

		if (!S_ISDIR(inode->i_mode))
			flags &= ~EXT4_DIRSYNC_FL;

		mutex_lock(&inode->i_mutex);
		/* Is it quota file? Do not allow user to mess with it */
		if (IS_NOQUOTA(inode)) {
			mutex_unlock(&inode->i_mutex);
			return -EPERM;
		}
		oldflags = ei->i_flags;

		/* The JOURNAL_DATA flag is modifiable only by root */
		jflag = flags & EXT4_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) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
			if (!capable(CAP_LINUX_IMMUTABLE)) {
				mutex_unlock(&inode->i_mutex);
				return -EPERM;
			}
		}

		/*
		 * The JOURNAL_DATA flag can only be changed by
		 * the relevant capability.
		 */
		if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
			if (!capable(CAP_SYS_RESOURCE)) {
				mutex_unlock(&inode->i_mutex);
				return -EPERM;
			}
		}


		handle = ext4_journal_start(inode, 1);
		if (IS_ERR(handle)) {
			mutex_unlock(&inode->i_mutex);
			return PTR_ERR(handle);
		}
		if (IS_SYNC(inode))
			handle->h_sync = 1;
		err = ext4_reserve_inode_write(handle, inode, &iloc);
		if (err)
			goto flags_err;

		flags = flags & EXT4_FL_USER_MODIFIABLE;
		flags |= oldflags & ~EXT4_FL_USER_MODIFIABLE;
		ei->i_flags = flags;

		ext4_set_inode_flags(inode);
		inode->i_ctime = ext4_current_time(inode);

		err = ext4_mark_iloc_dirty(handle, inode, &iloc);
flags_err:
		ext4_journal_stop(handle);
		if (err) {
			mutex_unlock(&inode->i_mutex);
			return err;
		}

		if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
			err = ext4_change_inode_journal_flag(inode, jflag);
		mutex_unlock(&inode->i_mutex);
		return err;
	}
	case EXT4_IOC_GETVERSION:
	case EXT4_IOC_GETVERSION_OLD:
		return put_user(inode->i_generation, (int __user *) arg);
	case EXT4_IOC_SETVERSION:
	case EXT4_IOC_SETVERSION_OLD: {
		handle_t *handle;
		struct ext4_iloc iloc;
		__u32 generation;
		int err;

		if (!is_owner_or_cap(inode))
			return -EPERM;
		if (IS_RDONLY(inode))
			return -EROFS;
		if (get_user(generation, (int __user *) arg))
			return -EFAULT;

		handle = ext4_journal_start(inode, 1);
		if (IS_ERR(handle))
			return PTR_ERR(handle);
		err = ext4_reserve_inode_write(handle, inode, &iloc);
		if (err == 0) {
			inode->i_ctime = ext4_current_time(inode);
			inode->i_generation = generation;
			err = ext4_mark_iloc_dirty(handle, inode, &iloc);
		}
		ext4_journal_stop(handle);
		return err;
	}
#ifdef CONFIG_JBD2_DEBUG
	case EXT4_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(&EXT4_SB(sb)->ro_wait_queue, &wait);
			if (timer_pending(&EXT4_SB(sb)->turn_ro_timer)) {
				schedule();
				ret = 1;
			}
			remove_wait_queue(&EXT4_SB(sb)->ro_wait_queue, &wait);
			return ret;
		}
#endif
	case EXT4_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 EXT4_IOC_SETRSVSZ: {

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

		if (IS_RDONLY(inode))
			return -EROFS;

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

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

		if (rsv_window_size > EXT4_MAX_RESERVE_BLOCKS)
			rsv_window_size = EXT4_MAX_RESERVE_BLOCKS;

		/*
		 * need to allocate reservation structure for this inode
		 * before set the window size
		 */
		down_write(&ei->i_data_sem);
		if (!ei->i_block_alloc_info)
			ext4_init_block_alloc_info(inode);

		if (ei->i_block_alloc_info){
			struct ext4_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
			rsv->rsv_goal_size = rsv_window_size;
		}
		up_write(&ei->i_data_sem);
		return 0;
	}
	case EXT4_IOC_GROUP_EXTEND: {
		ext4_fsblk_t n_blocks_count;
		struct super_block *sb = inode->i_sb;
		int err;

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

		if (IS_RDONLY(inode))
			return -EROFS;

		if (get_user(n_blocks_count, (__u32 __user *)arg))
			return -EFAULT;

		err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
		jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
		jbd2_journal_flush(EXT4_SB(sb)->s_journal);
		jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);

		return err;
	}
	case EXT4_IOC_GROUP_ADD: {
		struct ext4_new_group_data input;
		struct super_block *sb = inode->i_sb;
		int err;

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

		if (IS_RDONLY(inode))
			return -EROFS;

		if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
				sizeof(input)))
			return -EFAULT;

		err = ext4_group_add(sb, &input);
		jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
		jbd2_journal_flush(EXT4_SB(sb)->s_journal);
		jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);

		return err;
	}

	case EXT4_IOC_MIGRATE:
		return ext4_ext_migrate(inode, filp, cmd, arg);

	default:
		return -ENOTTY;
	}
}

#ifdef CONFIG_COMPAT
long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	struct inode *inode = file->f_path.dentry->d_inode;
	int ret;

	/* These are just misnamed, they actually get/put from/to user an int */
	switch (cmd) {
	case EXT4_IOC32_GETFLAGS:
		cmd = EXT4_IOC_GETFLAGS;
		break;
	case EXT4_IOC32_SETFLAGS:
		cmd = EXT4_IOC_SETFLAGS;
		break;
	case EXT4_IOC32_GETVERSION:
		cmd = EXT4_IOC_GETVERSION;
		break;
	case EXT4_IOC32_SETVERSION:
		cmd = EXT4_IOC_SETVERSION;
		break;
	case EXT4_IOC32_GROUP_EXTEND:
		cmd = EXT4_IOC_GROUP_EXTEND;
		break;
	case EXT4_IOC32_GETVERSION_OLD:
		cmd = EXT4_IOC_GETVERSION_OLD;
		break;
	case EXT4_IOC32_SETVERSION_OLD:
		cmd = EXT4_IOC_SETVERSION_OLD;
		break;
#ifdef CONFIG_JBD2_DEBUG
	case EXT4_IOC32_WAIT_FOR_READONLY:
		cmd = EXT4_IOC_WAIT_FOR_READONLY;
		break;
#endif
	case EXT4_IOC32_GETRSVSZ:
		cmd = EXT4_IOC_GETRSVSZ;
		break;
	case EXT4_IOC32_SETRSVSZ:
		cmd = EXT4_IOC_SETRSVSZ;
		break;
	case EXT4_IOC_GROUP_ADD:
		break;
	default:
		return -ENOIOCTLCMD;
	}
	lock_kernel();
	ret = ext4_ioctl(inode, file, cmd, (unsigned long) compat_ptr(arg));
	unlock_kernel();
	return ret;
}
#endif
Commit	Line	Data
ac27a0ec	1	/*
617ba13b	2	* linux/fs/ext4/ioctl.c
ac27a0ec DK	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>
dab291af	11	#include <linux/jbd2.h>
ac27a0ec	12	#include <linux/capability.h>
617ba13b	13	#include <linux/ext4_fs.h>
dab291af	14	#include <linux/ext4_jbd2.h>
ac27a0ec DK	15	#include <linux/time.h>
	16	#include <linux/compat.h>
	17	#include <linux/smp_lock.h>
	18	#include <asm/uaccess.h>
	19
617ba13b	20	int ext4_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
ac27a0ec DK	21	unsigned long arg)
ac27a0ec DK	22	{
617ba13b	23	struct ext4_inode_info *ei = EXT4_I(inode);
ac27a0ec DK	24	unsigned int flags;
	25	unsigned short rsv_window_size;
	26
617ba13b	27	ext4_debug ("cmd = %u, arg = %lu\n", cmd, arg);
ac27a0ec DK	28
ac27a0ec DK	29	switch (cmd) {
617ba13b	30	case EXT4_IOC_GETFLAGS:
ff9ddf7e	31	ext4_get_inode_flags(ei);
617ba13b	32	flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
ac27a0ec	33	return put_user(flags, (int __user *) arg);
617ba13b	34	case EXT4_IOC_SETFLAGS: {
ac27a0ec DK	35	handle_t *handle = NULL;
ac27a0ec DK	36	int err;
617ba13b	37	struct ext4_iloc iloc;
ac27a0ec DK	38	unsigned int oldflags;
	39	unsigned int jflag;
	40
	41	if (IS_RDONLY(inode))
	42	return -EROFS;
	43
3bd858ab	44	if (!is_owner_or_cap(inode))
ac27a0ec DK	45	return -EACCES;
	46
	47	if (get_user(flags, (int __user *) arg))
	48	return -EFAULT;
	49
	50	if (!S_ISDIR(inode->i_mode))
617ba13b	51	flags &= ~EXT4_DIRSYNC_FL;
ac27a0ec DK	52
ac27a0ec DK	53	mutex_lock(&inode->i_mutex);
e47776a0 JK	54	/* Is it quota file? Do not allow user to mess with it */
	55	if (IS_NOQUOTA(inode)) {
	56	mutex_unlock(&inode->i_mutex);
	57	return -EPERM;
	58	}
ac27a0ec DK	59	oldflags = ei->i_flags;
	60
	61	/* The JOURNAL_DATA flag is modifiable only by root */
617ba13b	62	jflag = flags & EXT4_JOURNAL_DATA_FL;
ac27a0ec DK	63
	64	/*
	65	* The IMMUTABLE and APPEND_ONLY flags can only be changed by
	66	* the relevant capability.
	67	*
	68	* This test looks nicer. Thanks to Pauline Middelink
	69	*/
617ba13b	70	if ((flags ^ oldflags) & (EXT4_APPEND_FL \| EXT4_IMMUTABLE_FL)) {
ac27a0ec DK	71	if (!capable(CAP_LINUX_IMMUTABLE)) {
	72	mutex_unlock(&inode->i_mutex);
	73	return -EPERM;
	74	}
	75	}
	76
	77	/*
	78	* The JOURNAL_DATA flag can only be changed by
	79	* the relevant capability.
	80	*/
617ba13b	81	if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
ac27a0ec DK	82	if (!capable(CAP_SYS_RESOURCE)) {
	83	mutex_unlock(&inode->i_mutex);
	84	return -EPERM;
	85	}
	86	}
	87
	88
617ba13b	89	handle = ext4_journal_start(inode, 1);
ac27a0ec DK	90	if (IS_ERR(handle)) {
	91	mutex_unlock(&inode->i_mutex);
	92	return PTR_ERR(handle);
	93	}
	94	if (IS_SYNC(inode))
	95	handle->h_sync = 1;
617ba13b	96	err = ext4_reserve_inode_write(handle, inode, &iloc);
ac27a0ec DK	97	if (err)
	98	goto flags_err;
	99
617ba13b MC	100	flags = flags & EXT4_FL_USER_MODIFIABLE;
617ba13b MC	101	flags \|= oldflags & ~EXT4_FL_USER_MODIFIABLE;
ac27a0ec DK	102	ei->i_flags = flags;
ac27a0ec DK	103
617ba13b	104	ext4_set_inode_flags(inode);
ef7f3835	105	inode->i_ctime = ext4_current_time(inode);
ac27a0ec	106
617ba13b	107	err = ext4_mark_iloc_dirty(handle, inode, &iloc);
ac27a0ec	108	flags_err:
617ba13b	109	ext4_journal_stop(handle);
ac27a0ec DK	110	if (err) {
	111	mutex_unlock(&inode->i_mutex);
	112	return err;
	113	}
	114
617ba13b MC	115	if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
617ba13b MC	116	err = ext4_change_inode_journal_flag(inode, jflag);
ac27a0ec DK	117	mutex_unlock(&inode->i_mutex);
	118	return err;
	119	}
617ba13b MC	120	case EXT4_IOC_GETVERSION:
617ba13b MC	121	case EXT4_IOC_GETVERSION_OLD:
ac27a0ec	122	return put_user(inode->i_generation, (int __user *) arg);
617ba13b MC	123	case EXT4_IOC_SETVERSION:
617ba13b MC	124	case EXT4_IOC_SETVERSION_OLD: {
ac27a0ec	125	handle_t *handle;
617ba13b	126	struct ext4_iloc iloc;
ac27a0ec DK	127	__u32 generation;
	128	int err;
	129
3bd858ab	130	if (!is_owner_or_cap(inode))
ac27a0ec DK	131	return -EPERM;
	132	if (IS_RDONLY(inode))
	133	return -EROFS;
	134	if (get_user(generation, (int __user *) arg))
	135	return -EFAULT;
	136
617ba13b	137	handle = ext4_journal_start(inode, 1);
ac27a0ec DK	138	if (IS_ERR(handle))
ac27a0ec DK	139	return PTR_ERR(handle);
617ba13b	140	err = ext4_reserve_inode_write(handle, inode, &iloc);
ac27a0ec	141	if (err == 0) {
ef7f3835	142	inode->i_ctime = ext4_current_time(inode);
ac27a0ec	143	inode->i_generation = generation;
617ba13b	144	err = ext4_mark_iloc_dirty(handle, inode, &iloc);
ac27a0ec	145	}
617ba13b	146	ext4_journal_stop(handle);
ac27a0ec DK	147	return err;
ac27a0ec DK	148	}
e23291b9	149	#ifdef CONFIG_JBD2_DEBUG
617ba13b	150	case EXT4_IOC_WAIT_FOR_READONLY:
ac27a0ec DK	151	/*
	152	* This is racy - by the time we're woken up and running,
	153	* the superblock could be released. And the module could
	154	* have been unloaded. So sue me.
	155	*
	156	* Returns 1 if it slept, else zero.
	157	*/
	158	{
	159	struct super_block *sb = inode->i_sb;
	160	DECLARE_WAITQUEUE(wait, current);
	161	int ret = 0;
	162
	163	set_current_state(TASK_INTERRUPTIBLE);
617ba13b MC	164	add_wait_queue(&EXT4_SB(sb)->ro_wait_queue, &wait);
617ba13b MC	165	if (timer_pending(&EXT4_SB(sb)->turn_ro_timer)) {
ac27a0ec DK	166	schedule();
	167	ret = 1;
	168	}
617ba13b	169	remove_wait_queue(&EXT4_SB(sb)->ro_wait_queue, &wait);
ac27a0ec DK	170	return ret;
	171	}
	172	#endif
617ba13b	173	case EXT4_IOC_GETRSVSZ:
ac27a0ec DK	174	if (test_opt(inode->i_sb, RESERVATION)
	175	&& S_ISREG(inode->i_mode)
	176	&& ei->i_block_alloc_info) {
	177	rsv_window_size = ei->i_block_alloc_info->rsv_window_node.rsv_goal_size;
	178	return put_user(rsv_window_size, (int __user *)arg);
	179	}
	180	return -ENOTTY;
617ba13b	181	case EXT4_IOC_SETRSVSZ: {
ac27a0ec DK	182
	183	if (!test_opt(inode->i_sb, RESERVATION) \|\|!S_ISREG(inode->i_mode))
	184	return -ENOTTY;
	185
	186	if (IS_RDONLY(inode))
	187	return -EROFS;
	188
3bd858ab	189	if (!is_owner_or_cap(inode))
ac27a0ec DK	190	return -EACCES;
	191
	192	if (get_user(rsv_window_size, (int __user *)arg))
	193	return -EFAULT;
	194
617ba13b MC	195	if (rsv_window_size > EXT4_MAX_RESERVE_BLOCKS)
617ba13b MC	196	rsv_window_size = EXT4_MAX_RESERVE_BLOCKS;
ac27a0ec DK	197
	198	/*
	199	* need to allocate reservation structure for this inode
	200	* before set the window size
	201	*/
0e855ac8	202	down_write(&ei->i_data_sem);
ac27a0ec	203	if (!ei->i_block_alloc_info)
617ba13b	204	ext4_init_block_alloc_info(inode);
ac27a0ec DK	205
ac27a0ec DK	206	if (ei->i_block_alloc_info){
617ba13b	207	struct ext4_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
ac27a0ec DK	208	rsv->rsv_goal_size = rsv_window_size;
ac27a0ec DK	209	}
0e855ac8	210	up_write(&ei->i_data_sem);
ac27a0ec DK	211	return 0;
ac27a0ec DK	212	}
617ba13b MC	213	case EXT4_IOC_GROUP_EXTEND: {
617ba13b MC	214	ext4_fsblk_t n_blocks_count;
ac27a0ec DK	215	struct super_block *sb = inode->i_sb;
	216	int err;
	217
	218	if (!capable(CAP_SYS_RESOURCE))
	219	return -EPERM;
	220
	221	if (IS_RDONLY(inode))
	222	return -EROFS;
	223
	224	if (get_user(n_blocks_count, (__u32 __user *)arg))
	225	return -EFAULT;
	226
617ba13b	227	err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
dab291af MC	228	jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
	229	jbd2_journal_flush(EXT4_SB(sb)->s_journal);
	230	jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
ac27a0ec DK	231
	232	return err;
	233	}
617ba13b MC	234	case EXT4_IOC_GROUP_ADD: {
617ba13b MC	235	struct ext4_new_group_data input;
ac27a0ec DK	236	struct super_block *sb = inode->i_sb;
	237	int err;
	238
	239	if (!capable(CAP_SYS_RESOURCE))
	240	return -EPERM;
	241
	242	if (IS_RDONLY(inode))
	243	return -EROFS;
	244
617ba13b	245	if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
ac27a0ec DK	246	sizeof(input)))
	247	return -EFAULT;
	248
617ba13b	249	err = ext4_group_add(sb, &input);
dab291af MC	250	jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
	251	jbd2_journal_flush(EXT4_SB(sb)->s_journal);
	252	jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
ac27a0ec DK	253
	254	return err;
	255	}
	256
c14c6fd5 AK	257	case EXT4_IOC_MIGRATE:
	258	return ext4_ext_migrate(inode, filp, cmd, arg);
	259
ac27a0ec DK	260	default:
	261	return -ENOTTY;
	262	}
	263	}
	264
	265	#ifdef CONFIG_COMPAT
617ba13b	266	long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
ac27a0ec	267	{
9d549890	268	struct inode *inode = file->f_path.dentry->d_inode;
ac27a0ec DK	269	int ret;
	270
	271	/* These are just misnamed, they actually get/put from/to user an int */
	272	switch (cmd) {
617ba13b MC	273	case EXT4_IOC32_GETFLAGS:
617ba13b MC	274	cmd = EXT4_IOC_GETFLAGS;
ac27a0ec	275	break;
617ba13b MC	276	case EXT4_IOC32_SETFLAGS:
617ba13b MC	277	cmd = EXT4_IOC_SETFLAGS;
ac27a0ec	278	break;
617ba13b MC	279	case EXT4_IOC32_GETVERSION:
617ba13b MC	280	cmd = EXT4_IOC_GETVERSION;
ac27a0ec	281	break;
617ba13b MC	282	case EXT4_IOC32_SETVERSION:
617ba13b MC	283	cmd = EXT4_IOC_SETVERSION;
ac27a0ec	284	break;
617ba13b MC	285	case EXT4_IOC32_GROUP_EXTEND:
617ba13b MC	286	cmd = EXT4_IOC_GROUP_EXTEND;
ac27a0ec	287	break;
617ba13b MC	288	case EXT4_IOC32_GETVERSION_OLD:
617ba13b MC	289	cmd = EXT4_IOC_GETVERSION_OLD;
ac27a0ec	290	break;
617ba13b MC	291	case EXT4_IOC32_SETVERSION_OLD:
617ba13b MC	292	cmd = EXT4_IOC_SETVERSION_OLD;
ac27a0ec	293	break;
e23291b9	294	#ifdef CONFIG_JBD2_DEBUG
617ba13b MC	295	case EXT4_IOC32_WAIT_FOR_READONLY:
617ba13b MC	296	cmd = EXT4_IOC_WAIT_FOR_READONLY;
ac27a0ec DK	297	break;
ac27a0ec DK	298	#endif
617ba13b MC	299	case EXT4_IOC32_GETRSVSZ:
617ba13b MC	300	cmd = EXT4_IOC_GETRSVSZ;
ac27a0ec	301	break;
617ba13b MC	302	case EXT4_IOC32_SETRSVSZ:
617ba13b MC	303	cmd = EXT4_IOC_SETRSVSZ;
ac27a0ec	304	break;
617ba13b	305	case EXT4_IOC_GROUP_ADD:
ac27a0ec DK	306	break;
	307	default:
	308	return -ENOIOCTLCMD;
	309	}
	310	lock_kernel();
617ba13b	311	ret = ext4_ioctl(inode, file, cmd, (unsigned long) compat_ptr(arg));
ac27a0ec DK	312	unlock_kernel();
	313	return ret;
	314	}
	315	#endif