[mirror_ubuntu-artful-kernel.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_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_quota.h"
#include "xfs_trans.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_get_xstatev(
	struct super_block	*sb,
	struct fs_quota_statv	*fqs)
{
	struct xfs_mount	*mp = XFS_M(sb);

	if (!XFS_IS_QUOTA_RUNNING(mp))
		return -ENOSYS;
	return -xfs_qm_scall_getqstatv(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_GDQ_ENFD)
		flags |= XFS_GQUOTA_ENFD;
	if (uflags & FS_QUOTA_PDQ_ENFD)
		flags |= XFS_PQUOTA_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_xstatev		= xfs_fs_get_xstatev,
	.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"
6ca1c906	19	#include "xfs_format.h"
239880ef	20	#include "xfs_log_format.h"
7fd36c44	21	#include "xfs_trans_resv.h"
7fd36c44	22	#include "xfs_sb.h"
fcafb71b CH	23	#include "xfs_ag.h"
fcafb71b CH	24	#include "xfs_mount.h"
a4fbe6ab	25	#include "xfs_inode.h"
fcafb71b	26	#include "xfs_quota.h"
fcafb71b	27	#include "xfs_trans.h"
06f8e2d6	28	#include "xfs_qm.h"
fcafb71b CH	29	#include <linux/quota.h>
	30
	31
	32	STATIC int
	33	xfs_quota_type(int type)
	34	{
	35	switch (type) {
	36	case USRQUOTA:
	37	return XFS_DQ_USER;
	38	case GRPQUOTA:
	39	return XFS_DQ_GROUP;
	40	default:
	41	return XFS_DQ_PROJ;
	42	}
	43	}
	44
fcafb71b CH	45	STATIC int
	46	xfs_fs_get_xstate(
	47	struct super_block *sb,
	48	struct fs_quota_stat *fqs)
	49	{
	50	struct xfs_mount *mp = XFS_M(sb);
	51
	52	if (!XFS_IS_QUOTA_RUNNING(mp))
	53	return -ENOSYS;
	54	return -xfs_qm_scall_getqstat(mp, fqs);
	55	}
	56
5d5e3d57 CS	57	STATIC int
	58	xfs_fs_get_xstatev(
	59	struct super_block *sb,
	60	struct fs_quota_statv *fqs)
	61	{
	62	struct xfs_mount *mp = XFS_M(sb);
	63
	64	if (!XFS_IS_QUOTA_RUNNING(mp))
	65	return -ENOSYS;
	66	return -xfs_qm_scall_getqstatv(mp, fqs);
	67	}
	68
fcafb71b CH	69	STATIC int
	70	xfs_fs_set_xstate(
	71	struct super_block *sb,
	72	unsigned int uflags,
	73	int op)
	74	{
	75	struct xfs_mount *mp = XFS_M(sb);
	76	unsigned int flags = 0;
	77
	78	if (sb->s_flags & MS_RDONLY)
	79	return -EROFS;
c7ff91d7	80	if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp))
fcafb71b	81	return -ENOSYS;
fcafb71b	82
ade7ce31	83	if (uflags & FS_QUOTA_UDQ_ACCT)
fcafb71b	84	flags \|= XFS_UQUOTA_ACCT;
ade7ce31	85	if (uflags & FS_QUOTA_PDQ_ACCT)
fcafb71b	86	flags \|= XFS_PQUOTA_ACCT;
ade7ce31	87	if (uflags & FS_QUOTA_GDQ_ACCT)
fcafb71b	88	flags \|= XFS_GQUOTA_ACCT;
ade7ce31	89	if (uflags & FS_QUOTA_UDQ_ENFD)
fcafb71b	90	flags \|= XFS_UQUOTA_ENFD;
83e782e1 CS	91	if (uflags & FS_QUOTA_GDQ_ENFD)
	92	flags \|= XFS_GQUOTA_ENFD;
	93	if (uflags & FS_QUOTA_PDQ_ENFD)
	94	flags \|= XFS_PQUOTA_ENFD;
fcafb71b CH	95
	96	switch (op) {
	97	case Q_XQUOTAON:
	98	return -xfs_qm_scall_quotaon(mp, flags);
	99	case Q_XQUOTAOFF:
	100	if (!XFS_IS_QUOTA_ON(mp))
	101	return -EINVAL;
	102	return -xfs_qm_scall_quotaoff(mp, flags);
	103	case Q_XQUOTARM:
	104	if (XFS_IS_QUOTA_ON(mp))
	105	return -EINVAL;
	106	return -xfs_qm_scall_trunc_qfiles(mp, flags);
	107	}
	108
	109	return -EINVAL;
	110	}
	111
	112	STATIC int
b9b2dd36	113	xfs_fs_get_dqblk(
fcafb71b	114	struct super_block *sb,
74a8a103	115	struct kqid qid,
fcafb71b CH	116	struct fs_disk_quota *fdq)
	117	{
	118	struct xfs_mount *mp = XFS_M(sb);
	119
	120	if (!XFS_IS_QUOTA_RUNNING(mp))
	121	return -ENOSYS;
	122	if (!XFS_IS_QUOTA_ON(mp))
	123	return -ESRCH;
	124
74a8a103 EB	125	return -xfs_qm_scall_getquota(mp, from_kqid(&init_user_ns, qid),
74a8a103 EB	126	xfs_quota_type(qid.type), fdq);
fcafb71b CH	127	}
	128
	129	STATIC int
c472b432	130	xfs_fs_set_dqblk(
fcafb71b	131	struct super_block *sb,
74a8a103	132	struct kqid qid,
fcafb71b CH	133	struct fs_disk_quota *fdq)
	134	{
	135	struct xfs_mount *mp = XFS_M(sb);
	136
	137	if (sb->s_flags & MS_RDONLY)
	138	return -EROFS;
	139	if (!XFS_IS_QUOTA_RUNNING(mp))
	140	return -ENOSYS;
	141	if (!XFS_IS_QUOTA_ON(mp))
	142	return -ESRCH;
fcafb71b	143
74a8a103 EB	144	return -xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
74a8a103 EB	145	xfs_quota_type(qid.type), fdq);
fcafb71b CH	146	}
fcafb71b CH	147
0d54b217	148	const struct quotactl_ops xfs_quotactl_operations = {
5d5e3d57	149	.get_xstatev = xfs_fs_get_xstatev,
fcafb71b CH	150	.get_xstate = xfs_fs_get_xstate,
fcafb71b CH	151	.set_xstate = xfs_fs_set_xstate,
b9b2dd36	152	.get_dqblk = xfs_fs_get_dqblk,
c472b432	153	.set_dqblk = xfs_fs_set_dqblk,
fcafb71b	154	};