[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / xfs / xfs_quotaops.c

/*
 * Copyright (c) 2008, Christoph Hellwig
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include "xfs.h"
#include "xfs_sb.h"
#include "xfs_log.h"
#include "xfs_ag.h"
#include "xfs_mount.h"
#include "xfs_quota.h"
#include "xfs_trans.h"
#include "xfs_bmap_btree.h"
#include "xfs_inode.h"
#include "xfs_qm.h"
#include <linux/quota.h>


STATIC int
xfs_quota_type(int type)
{
	switch (type) {
	case USRQUOTA:
		return XFS_DQ_USER;
	case GRPQUOTA:
		return XFS_DQ_GROUP;
	default:
		return XFS_DQ_PROJ;
	}
}

STATIC int
xfs_fs_get_xstate(
	struct super_block	*sb,
	struct fs_quota_stat	*fqs)
{
	struct xfs_mount	*mp = XFS_M(sb);

	if (!XFS_IS_QUOTA_RUNNING(mp))
		return -ENOSYS;
	return -xfs_qm_scall_getqstat(mp, fqs);
}

STATIC int
xfs_fs_set_xstate(
	struct super_block	*sb,
	unsigned int		uflags,
	int			op)
{
	struct xfs_mount	*mp = XFS_M(sb);
	unsigned int		flags = 0;

	if (sb->s_flags & MS_RDONLY)
		return -EROFS;
	if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp))
		return -ENOSYS;

	if (uflags & FS_QUOTA_UDQ_ACCT)
		flags |= XFS_UQUOTA_ACCT;
	if (uflags & FS_QUOTA_PDQ_ACCT)
		flags |= XFS_PQUOTA_ACCT;
	if (uflags & FS_QUOTA_GDQ_ACCT)
		flags |= XFS_GQUOTA_ACCT;
	if (uflags & FS_QUOTA_UDQ_ENFD)
		flags |= XFS_UQUOTA_ENFD;
	if (uflags & (FS_QUOTA_PDQ_ENFD|FS_QUOTA_GDQ_ENFD))
		flags |= XFS_OQUOTA_ENFD;

	switch (op) {
	case Q_XQUOTAON:
		return -xfs_qm_scall_quotaon(mp, flags);
	case Q_XQUOTAOFF:
		if (!XFS_IS_QUOTA_ON(mp))
			return -EINVAL;
		return -xfs_qm_scall_quotaoff(mp, flags);
	case Q_XQUOTARM:
		if (XFS_IS_QUOTA_ON(mp))
			return -EINVAL;
		return -xfs_qm_scall_trunc_qfiles(mp, flags);
	}

	return -EINVAL;
}

STATIC int
xfs_fs_get_dqblk(
	struct super_block	*sb,
	struct kqid		qid,
	struct fs_disk_quota	*fdq)
{
	struct xfs_mount	*mp = XFS_M(sb);

	if (!XFS_IS_QUOTA_RUNNING(mp))
		return -ENOSYS;
	if (!XFS_IS_QUOTA_ON(mp))
		return -ESRCH;

	return -xfs_qm_scall_getquota(mp, from_kqid(&init_user_ns, qid),
				      xfs_quota_type(qid.type), fdq);
}

STATIC int
xfs_fs_set_dqblk(
	struct super_block	*sb,
	struct kqid		qid,
	struct fs_disk_quota	*fdq)
{
	struct xfs_mount	*mp = XFS_M(sb);

	if (sb->s_flags & MS_RDONLY)
		return -EROFS;
	if (!XFS_IS_QUOTA_RUNNING(mp))
		return -ENOSYS;
	if (!XFS_IS_QUOTA_ON(mp))
		return -ESRCH;

	return -xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
				     xfs_quota_type(qid.type), fdq);
}

const struct quotactl_ops xfs_quotactl_operations = {
	.get_xstate		= xfs_fs_get_xstate,
	.set_xstate		= xfs_fs_set_xstate,
	.get_dqblk		= xfs_fs_get_dqblk,
	.set_dqblk		= xfs_fs_set_dqblk,
};
Commit	Line	Data
fcafb71b CH	1	/*
	2	* Copyright (c) 2008, Christoph Hellwig
	3	* All Rights Reserved.
	4	*
	5	* This program is free software; you can redistribute it and/or
	6	* modify it under the terms of the GNU General Public License as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it would be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write the Free Software Foundation,
	16	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	17	*/
	18	#include "xfs.h"
fcafb71b	19	#include "xfs_sb.h"
ed3b4d6c	20	#include "xfs_log.h"
fcafb71b CH	21	#include "xfs_ag.h"
	22	#include "xfs_mount.h"
	23	#include "xfs_quota.h"
fcafb71b CH	24	#include "xfs_trans.h"
	25	#include "xfs_bmap_btree.h"
	26	#include "xfs_inode.h"
06f8e2d6	27	#include "xfs_qm.h"
fcafb71b CH	28	#include <linux/quota.h>
	29
	30
	31	STATIC int
	32	xfs_quota_type(int type)
	33	{
	34	switch (type) {
	35	case USRQUOTA:
	36	return XFS_DQ_USER;
	37	case GRPQUOTA:
	38	return XFS_DQ_GROUP;
	39	default:
	40	return XFS_DQ_PROJ;
	41	}
	42	}
	43
fcafb71b CH	44	STATIC int
	45	xfs_fs_get_xstate(
	46	struct super_block *sb,
	47	struct fs_quota_stat *fqs)
	48	{
	49	struct xfs_mount *mp = XFS_M(sb);
	50
	51	if (!XFS_IS_QUOTA_RUNNING(mp))
	52	return -ENOSYS;
	53	return -xfs_qm_scall_getqstat(mp, fqs);
	54	}
	55
	56	STATIC int
	57	xfs_fs_set_xstate(
	58	struct super_block *sb,
	59	unsigned int uflags,
	60	int op)
	61	{
	62	struct xfs_mount *mp = XFS_M(sb);
	63	unsigned int flags = 0;
	64
	65	if (sb->s_flags & MS_RDONLY)
	66	return -EROFS;
c7ff91d7	67	if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp))
fcafb71b	68	return -ENOSYS;
fcafb71b	69
ade7ce31	70	if (uflags & FS_QUOTA_UDQ_ACCT)
fcafb71b	71	flags \|= XFS_UQUOTA_ACCT;
ade7ce31	72	if (uflags & FS_QUOTA_PDQ_ACCT)
fcafb71b	73	flags \|= XFS_PQUOTA_ACCT;
ade7ce31	74	if (uflags & FS_QUOTA_GDQ_ACCT)
fcafb71b	75	flags \|= XFS_GQUOTA_ACCT;
ade7ce31	76	if (uflags & FS_QUOTA_UDQ_ENFD)
fcafb71b	77	flags \|= XFS_UQUOTA_ENFD;
ade7ce31	78	if (uflags & (FS_QUOTA_PDQ_ENFD\|FS_QUOTA_GDQ_ENFD))
fcafb71b CH	79	flags \|= XFS_OQUOTA_ENFD;
	80
	81	switch (op) {
	82	case Q_XQUOTAON:
	83	return -xfs_qm_scall_quotaon(mp, flags);
	84	case Q_XQUOTAOFF:
	85	if (!XFS_IS_QUOTA_ON(mp))
	86	return -EINVAL;
	87	return -xfs_qm_scall_quotaoff(mp, flags);
	88	case Q_XQUOTARM:
	89	if (XFS_IS_QUOTA_ON(mp))
	90	return -EINVAL;
	91	return -xfs_qm_scall_trunc_qfiles(mp, flags);
	92	}
	93
	94	return -EINVAL;
	95	}
	96
	97	STATIC int
b9b2dd36	98	xfs_fs_get_dqblk(
fcafb71b	99	struct super_block *sb,
74a8a103	100	struct kqid qid,
fcafb71b CH	101	struct fs_disk_quota *fdq)
	102	{
	103	struct xfs_mount *mp = XFS_M(sb);
	104
	105	if (!XFS_IS_QUOTA_RUNNING(mp))
	106	return -ENOSYS;
	107	if (!XFS_IS_QUOTA_ON(mp))
	108	return -ESRCH;
	109
74a8a103 EB	110	return -xfs_qm_scall_getquota(mp, from_kqid(&init_user_ns, qid),
74a8a103 EB	111	xfs_quota_type(qid.type), fdq);
fcafb71b CH	112	}
	113
	114	STATIC int
c472b432	115	xfs_fs_set_dqblk(
fcafb71b	116	struct super_block *sb,
74a8a103	117	struct kqid qid,
fcafb71b CH	118	struct fs_disk_quota *fdq)
	119	{
	120	struct xfs_mount *mp = XFS_M(sb);
	121
	122	if (sb->s_flags & MS_RDONLY)
	123	return -EROFS;
	124	if (!XFS_IS_QUOTA_RUNNING(mp))
	125	return -ENOSYS;
	126	if (!XFS_IS_QUOTA_ON(mp))
	127	return -ESRCH;
fcafb71b	128
74a8a103 EB	129	return -xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
74a8a103 EB	130	xfs_quota_type(qid.type), fdq);
fcafb71b CH	131	}
fcafb71b CH	132
0d54b217	133	const struct quotactl_ops xfs_quotactl_operations = {
fcafb71b CH	134	.get_xstate = xfs_fs_get_xstate,
fcafb71b CH	135	.set_xstate = xfs_fs_set_xstate,
b9b2dd36	136	.get_dqblk = xfs_fs_get_dqblk,
c472b432	137	.set_dqblk = xfs_fs_set_dqblk,
fcafb71b	138	};