[linux-2.6-block.git] / fs / xfs / xfs_quotaops.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2008, Christoph Hellwig
 * All Rights Reserved.
 */
#include "xfs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_quota.h"
#include "xfs_trans.h"
#include "xfs_icache.h"
#include "xfs_qm.h"


static void
xfs_qm_fill_state(
	struct qc_type_state	*tstate,
	struct xfs_mount	*mp,
	struct xfs_inode	*ip,
	xfs_ino_t		ino)
{
	struct xfs_quotainfo *q = mp->m_quotainfo;
	bool tempqip = false;

	tstate->ino = ino;
	if (!ip && ino == NULLFSINO)
		return;
	if (!ip) {
		if (xfs_iget(mp, NULL, ino, 0, 0, &ip))
			return;
		tempqip = true;
	}
	tstate->flags |= QCI_SYSFILE;
	tstate->blocks = ip->i_d.di_nblocks;
	tstate->nextents = ip->i_d.di_nextents;
	tstate->spc_timelimit = q->qi_btimelimit;
	tstate->ino_timelimit = q->qi_itimelimit;
	tstate->rt_spc_timelimit = q->qi_rtbtimelimit;
	tstate->spc_warnlimit = q->qi_bwarnlimit;
	tstate->ino_warnlimit = q->qi_iwarnlimit;
	tstate->rt_spc_warnlimit = q->qi_rtbwarnlimit;
	if (tempqip)
		xfs_irele(ip);
}

/*
 * Return quota status information, such as enforcements, quota file inode
 * numbers etc.
 */
static int
xfs_fs_get_quota_state(
	struct super_block	*sb,
	struct qc_state		*state)
{
	struct xfs_mount *mp = XFS_M(sb);
	struct xfs_quotainfo *q = mp->m_quotainfo;

	memset(state, 0, sizeof(*state));
	if (!XFS_IS_QUOTA_RUNNING(mp))
		return 0;
	state->s_incoredqs = q->qi_dquots;
	if (XFS_IS_UQUOTA_RUNNING(mp))
		state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED;
	if (XFS_IS_UQUOTA_ENFORCED(mp))
		state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
	if (XFS_IS_GQUOTA_RUNNING(mp))
		state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED;
	if (XFS_IS_GQUOTA_ENFORCED(mp))
		state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
	if (XFS_IS_PQUOTA_RUNNING(mp))
		state->s_state[PRJQUOTA].flags |= QCI_ACCT_ENABLED;
	if (XFS_IS_PQUOTA_ENFORCED(mp))
		state->s_state[PRJQUOTA].flags |= QCI_LIMITS_ENFORCED;

	xfs_qm_fill_state(&state->s_state[USRQUOTA], mp, q->qi_uquotaip,
			  mp->m_sb.sb_uquotino);
	xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp, q->qi_gquotaip,
			  mp->m_sb.sb_gquotino);
	xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp, q->qi_pquotaip,
			  mp->m_sb.sb_pquotino);
	return 0;
}

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;
	}
}

#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK | QC_WARNS_MASK)

/*
 * Adjust quota timers & warnings
 */
static int
xfs_fs_set_info(
	struct super_block	*sb,
	int			type,
	struct qc_info		*info)
{
	struct xfs_mount *mp = XFS_M(sb);
	struct qc_dqblk newlim;

	if (sb_rdonly(sb))
		return -EROFS;
	if (!XFS_IS_QUOTA_RUNNING(mp))
		return -ENOSYS;
	if (!XFS_IS_QUOTA_ON(mp))
		return -ESRCH;
	if (info->i_fieldmask & ~XFS_QC_SETINFO_MASK)
		return -EINVAL;
	if ((info->i_fieldmask & XFS_QC_SETINFO_MASK) == 0)
		return 0;

	newlim.d_fieldmask = info->i_fieldmask;
	newlim.d_spc_timer = info->i_spc_timelimit;
	newlim.d_ino_timer = info->i_ino_timelimit;
	newlim.d_rt_spc_timer = info->i_rt_spc_timelimit;
	newlim.d_ino_warns = info->i_ino_warnlimit;
	newlim.d_spc_warns = info->i_spc_warnlimit;
	newlim.d_rt_spc_warns = info->i_rt_spc_warnlimit;

	return xfs_qm_scall_setqlim(mp, 0, xfs_quota_type(type), &newlim);
}

static unsigned int
xfs_quota_flags(unsigned int uflags)
{
	unsigned int flags = 0;

	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;

	return flags;
}

STATIC int
xfs_quota_enable(
	struct super_block	*sb,
	unsigned int		uflags)
{
	struct xfs_mount	*mp = XFS_M(sb);

	if (sb_rdonly(sb))
		return -EROFS;
	if (!XFS_IS_QUOTA_RUNNING(mp))
		return -ENOSYS;

	return xfs_qm_scall_quotaon(mp, xfs_quota_flags(uflags));
}

STATIC int
xfs_quota_disable(
	struct super_block	*sb,
	unsigned int		uflags)
{
	struct xfs_mount	*mp = XFS_M(sb);

	if (sb_rdonly(sb))
		return -EROFS;
	if (!XFS_IS_QUOTA_RUNNING(mp))
		return -ENOSYS;
	if (!XFS_IS_QUOTA_ON(mp))
		return -EINVAL;

	return xfs_qm_scall_quotaoff(mp, xfs_quota_flags(uflags));
}

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

	if (sb_rdonly(sb))
		return -EROFS;

	if (XFS_IS_QUOTA_ON(mp))
		return -EINVAL;

	if (uflags & FS_USER_QUOTA)
		flags |= XFS_DQ_USER;
	if (uflags & FS_GROUP_QUOTA)
		flags |= XFS_DQ_GROUP;
	if (uflags & FS_PROJ_QUOTA)
		flags |= XFS_DQ_PROJ;

	return xfs_qm_scall_trunc_qfiles(mp, flags);
}

STATIC int
xfs_fs_get_dqblk(
	struct super_block	*sb,
	struct kqid		qid,
	struct qc_dqblk		*qdq)
{
	struct xfs_mount	*mp = XFS_M(sb);
	xfs_dqid_t		id;

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

	id = from_kqid(&init_user_ns, qid);
	return xfs_qm_scall_getquota(mp, id, xfs_quota_type(qid.type), qdq);
}

/* Return quota info for active quota >= this qid */
STATIC int
xfs_fs_get_nextdqblk(
	struct super_block	*sb,
	struct kqid		*qid,
	struct qc_dqblk		*qdq)
{
	int			ret;
	struct xfs_mount	*mp = XFS_M(sb);
	xfs_dqid_t		id;

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

	id = from_kqid(&init_user_ns, *qid);
	ret = xfs_qm_scall_getquota_next(mp, &id, xfs_quota_type(qid->type),
			qdq);
	if (ret)
		return ret;

	/* ID may be different, so convert back what we got */
	*qid = make_kqid(current_user_ns(), qid->type, id);
	return 0;
}

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

	if (sb_rdonly(sb))
		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), qdq);
}

const struct quotactl_ops xfs_quotactl_operations = {
	.get_state		= xfs_fs_get_quota_state,
	.set_info		= xfs_fs_set_info,
	.quota_enable		= xfs_quota_enable,
	.quota_disable		= xfs_quota_disable,
	.rm_xquota		= xfs_fs_rm_xquota,
	.get_dqblk		= xfs_fs_get_dqblk,
	.get_nextdqblk		= xfs_fs_get_nextdqblk,
	.set_dqblk		= xfs_fs_set_dqblk,
};
Commit	Line	Data
0b61f8a4	1	// SPDX-License-Identifier: GPL-2.0
fcafb71b CH	2	/*
	3	* Copyright (c) 2008, Christoph Hellwig
	4	* All Rights Reserved.
fcafb71b CH	5	*/
fcafb71b CH	6	#include "xfs.h"
5467b34b	7	#include "xfs_shared.h"
6ca1c906	8	#include "xfs_format.h"
239880ef	9	#include "xfs_log_format.h"
7fd36c44	10	#include "xfs_trans_resv.h"
fcafb71b	11	#include "xfs_mount.h"
a4fbe6ab	12	#include "xfs_inode.h"
fcafb71b	13	#include "xfs_quota.h"
fcafb71b	14	#include "xfs_trans.h"
5d3684c2	15	#include "xfs_icache.h"
06f8e2d6	16	#include "xfs_qm.h"
fcafb71b CH	17
fcafb71b CH	18
5d3684c2 JK	19	static void
	20	xfs_qm_fill_state(
	21	struct qc_type_state *tstate,
	22	struct xfs_mount *mp,
	23	struct xfs_inode *ip,
	24	xfs_ino_t ino)
fcafb71b	25	{
5d3684c2 JK	26	struct xfs_quotainfo *q = mp->m_quotainfo;
	27	bool tempqip = false;
	28
	29	tstate->ino = ino;
	30	if (!ip && ino == NULLFSINO)
	31	return;
	32	if (!ip) {
	33	if (xfs_iget(mp, NULL, ino, 0, 0, &ip))
	34	return;
	35	tempqip = true;
fcafb71b	36	}
5d3684c2 JK	37	tstate->flags \|= QCI_SYSFILE;
	38	tstate->blocks = ip->i_d.di_nblocks;
	39	tstate->nextents = ip->i_d.di_nextents;
	40	tstate->spc_timelimit = q->qi_btimelimit;
	41	tstate->ino_timelimit = q->qi_itimelimit;
	42	tstate->rt_spc_timelimit = q->qi_rtbtimelimit;
	43	tstate->spc_warnlimit = q->qi_bwarnlimit;
	44	tstate->ino_warnlimit = q->qi_iwarnlimit;
	45	tstate->rt_spc_warnlimit = q->qi_rtbwarnlimit;
	46	if (tempqip)
44a8736b	47	xfs_irele(ip);
fcafb71b CH	48	}
fcafb71b CH	49
5d3684c2 JK	50	/*
	51	* Return quota status information, such as enforcements, quota file inode
	52	* numbers etc.
	53	*/
	54	static int
	55	xfs_fs_get_quota_state(
fcafb71b	56	struct super_block *sb,
5d3684c2	57	struct qc_state *state)
fcafb71b	58	{
5d3684c2 JK	59	struct xfs_mount *mp = XFS_M(sb);
5d3684c2 JK	60	struct xfs_quotainfo *q = mp->m_quotainfo;
fcafb71b	61
5d3684c2	62	memset(state, 0, sizeof(*state));
fcafb71b	63	if (!XFS_IS_QUOTA_RUNNING(mp))
5d3684c2 JK	64	return 0;
	65	state->s_incoredqs = q->qi_dquots;
	66	if (XFS_IS_UQUOTA_RUNNING(mp))
	67	state->s_state[USRQUOTA].flags \|= QCI_ACCT_ENABLED;
	68	if (XFS_IS_UQUOTA_ENFORCED(mp))
	69	state->s_state[USRQUOTA].flags \|= QCI_LIMITS_ENFORCED;
	70	if (XFS_IS_GQUOTA_RUNNING(mp))
	71	state->s_state[GRPQUOTA].flags \|= QCI_ACCT_ENABLED;
	72	if (XFS_IS_GQUOTA_ENFORCED(mp))
	73	state->s_state[GRPQUOTA].flags \|= QCI_LIMITS_ENFORCED;
	74	if (XFS_IS_PQUOTA_RUNNING(mp))
	75	state->s_state[PRJQUOTA].flags \|= QCI_ACCT_ENABLED;
	76	if (XFS_IS_PQUOTA_ENFORCED(mp))
	77	state->s_state[PRJQUOTA].flags \|= QCI_LIMITS_ENFORCED;
	78
	79	xfs_qm_fill_state(&state->s_state[USRQUOTA], mp, q->qi_uquotaip,
	80	mp->m_sb.sb_uquotino);
	81	xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp, q->qi_gquotaip,
	82	mp->m_sb.sb_gquotino);
	83	xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp, q->qi_pquotaip,
	84	mp->m_sb.sb_pquotino);
	85	return 0;
fcafb71b CH	86	}
fcafb71b CH	87
5d5e3d57	88	STATIC int
5d3684c2	89	xfs_quota_type(int type)
5d5e3d57	90	{
5d3684c2 JK	91	switch (type) {
	92	case USRQUOTA:
	93	return XFS_DQ_USER;
	94	case GRPQUOTA:
	95	return XFS_DQ_GROUP;
	96	default:
	97	return XFS_DQ_PROJ;
	98	}
5d5e3d57 CS	99	}
5d5e3d57 CS	100
c14cad9e JK	101	#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK \| QC_WARNS_MASK)
	102
	103	/*
	104	* Adjust quota timers & warnings
	105	*/
	106	static int
	107	xfs_fs_set_info(
	108	struct super_block *sb,
	109	int type,
	110	struct qc_info *info)
	111	{
	112	struct xfs_mount *mp = XFS_M(sb);
	113	struct qc_dqblk newlim;
	114
bc98a42c	115	if (sb_rdonly(sb))
c14cad9e JK	116	return -EROFS;
	117	if (!XFS_IS_QUOTA_RUNNING(mp))
	118	return -ENOSYS;
	119	if (!XFS_IS_QUOTA_ON(mp))
	120	return -ESRCH;
	121	if (info->i_fieldmask & ~XFS_QC_SETINFO_MASK)
	122	return -EINVAL;
	123	if ((info->i_fieldmask & XFS_QC_SETINFO_MASK) == 0)
	124	return 0;
	125
	126	newlim.d_fieldmask = info->i_fieldmask;
	127	newlim.d_spc_timer = info->i_spc_timelimit;
	128	newlim.d_ino_timer = info->i_ino_timelimit;
	129	newlim.d_rt_spc_timer = info->i_rt_spc_timelimit;
	130	newlim.d_ino_warns = info->i_ino_warnlimit;
	131	newlim.d_spc_warns = info->i_spc_warnlimit;
	132	newlim.d_rt_spc_warns = info->i_rt_spc_warnlimit;
	133
	134	return xfs_qm_scall_setqlim(mp, 0, xfs_quota_type(type), &newlim);
	135	}
	136
38e478c4 JK	137	static unsigned int
38e478c4 JK	138	xfs_quota_flags(unsigned int uflags)
fcafb71b	139	{
38e478c4	140	unsigned int flags = 0;
fcafb71b	141
ade7ce31	142	if (uflags & FS_QUOTA_UDQ_ACCT)
fcafb71b	143	flags \|= XFS_UQUOTA_ACCT;
ade7ce31	144	if (uflags & FS_QUOTA_PDQ_ACCT)
fcafb71b	145	flags \|= XFS_PQUOTA_ACCT;
ade7ce31	146	if (uflags & FS_QUOTA_GDQ_ACCT)
fcafb71b	147	flags \|= XFS_GQUOTA_ACCT;
ade7ce31	148	if (uflags & FS_QUOTA_UDQ_ENFD)
fcafb71b	149	flags \|= XFS_UQUOTA_ENFD;
83e782e1 CS	150	if (uflags & FS_QUOTA_GDQ_ENFD)
	151	flags \|= XFS_GQUOTA_ENFD;
	152	if (uflags & FS_QUOTA_PDQ_ENFD)
	153	flags \|= XFS_PQUOTA_ENFD;
fcafb71b	154
38e478c4 JK	155	return flags;
	156	}
	157
	158	STATIC int
	159	xfs_quota_enable(
	160	struct super_block *sb,
	161	unsigned int uflags)
	162	{
	163	struct xfs_mount *mp = XFS_M(sb);
	164
bc98a42c	165	if (sb_rdonly(sb))
38e478c4 JK	166	return -EROFS;
	167	if (!XFS_IS_QUOTA_RUNNING(mp))
	168	return -ENOSYS;
	169
	170	return xfs_qm_scall_quotaon(mp, xfs_quota_flags(uflags));
	171	}
	172
	173	STATIC int
	174	xfs_quota_disable(
	175	struct super_block *sb,
	176	unsigned int uflags)
	177	{
	178	struct xfs_mount *mp = XFS_M(sb);
	179
bc98a42c	180	if (sb_rdonly(sb))
38e478c4 JK	181	return -EROFS;
	182	if (!XFS_IS_QUOTA_RUNNING(mp))
	183	return -ENOSYS;
	184	if (!XFS_IS_QUOTA_ON(mp))
	185	return -EINVAL;
fcafb71b	186
38e478c4	187	return xfs_qm_scall_quotaoff(mp, xfs_quota_flags(uflags));
fcafb71b CH	188	}
fcafb71b CH	189
9da93f9b ES	190	STATIC int
	191	xfs_fs_rm_xquota(
	192	struct super_block *sb,
	193	unsigned int uflags)
	194	{
	195	struct xfs_mount *mp = XFS_M(sb);
	196	unsigned int flags = 0;
2451337d	197
bc98a42c	198	if (sb_rdonly(sb))
9da93f9b ES	199	return -EROFS;
	200
	201	if (XFS_IS_QUOTA_ON(mp))
	202	return -EINVAL;
	203
	204	if (uflags & FS_USER_QUOTA)
	205	flags \|= XFS_DQ_USER;
	206	if (uflags & FS_GROUP_QUOTA)
	207	flags \|= XFS_DQ_GROUP;
74dc93a9	208	if (uflags & FS_PROJ_QUOTA)
9da93f9b ES	209	flags \|= XFS_DQ_PROJ;
9da93f9b ES	210
2451337d DC	211	return xfs_qm_scall_trunc_qfiles(mp, flags);
2451337d DC	212	}
9da93f9b	213
fcafb71b	214	STATIC int
b9b2dd36	215	xfs_fs_get_dqblk(
fcafb71b	216	struct super_block *sb,
74a8a103	217	struct kqid qid,
14bf61ff	218	struct qc_dqblk *qdq)
fcafb71b CH	219	{
fcafb71b CH	220	struct xfs_mount *mp = XFS_M(sb);
296c24e2	221	xfs_dqid_t id;
fcafb71b CH	222
	223	if (!XFS_IS_QUOTA_RUNNING(mp))
	224	return -ENOSYS;
	225	if (!XFS_IS_QUOTA_ON(mp))
	226	return -ESRCH;
	227
296c24e2	228	id = from_kqid(&init_user_ns, qid);
2e330e76	229	return xfs_qm_scall_getquota(mp, id, xfs_quota_type(qid.type), qdq);
296c24e2 ES	230	}
	231
	232	/* Return quota info for active quota >= this qid */
	233	STATIC int
	234	xfs_fs_get_nextdqblk(
	235	struct super_block *sb,
	236	struct kqid *qid,
	237	struct qc_dqblk *qdq)
	238	{
	239	int ret;
	240	struct xfs_mount *mp = XFS_M(sb);
	241	xfs_dqid_t id;
	242
	243	if (!XFS_IS_QUOTA_RUNNING(mp))
	244	return -ENOSYS;
	245	if (!XFS_IS_QUOTA_ON(mp))
	246	return -ESRCH;
	247
	248	id = from_kqid(&init_user_ns, *qid);
2e330e76 DW	249	ret = xfs_qm_scall_getquota_next(mp, &id, xfs_quota_type(qid->type),
2e330e76 DW	250	qdq);
296c24e2 ES	251	if (ret)
	252	return ret;
	253
	254	/* ID may be different, so convert back what we got */
	255	*qid = make_kqid(current_user_ns(), qid->type, id);
	256	return 0;
fcafb71b CH	257	}
	258
	259	STATIC int
c472b432	260	xfs_fs_set_dqblk(
fcafb71b	261	struct super_block *sb,
74a8a103	262	struct kqid qid,
14bf61ff	263	struct qc_dqblk *qdq)
fcafb71b CH	264	{
	265	struct xfs_mount *mp = XFS_M(sb);
	266
bc98a42c	267	if (sb_rdonly(sb))
fcafb71b CH	268	return -EROFS;
	269	if (!XFS_IS_QUOTA_RUNNING(mp))
	270	return -ENOSYS;
	271	if (!XFS_IS_QUOTA_ON(mp))
	272	return -ESRCH;
fcafb71b	273
2451337d	274	return xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
14bf61ff	275	xfs_quota_type(qid.type), qdq);
fcafb71b CH	276	}
fcafb71b CH	277
0d54b217	278	const struct quotactl_ops xfs_quotactl_operations = {
5d3684c2	279	.get_state = xfs_fs_get_quota_state,
c14cad9e	280	.set_info = xfs_fs_set_info,
38e478c4 JK	281	.quota_enable = xfs_quota_enable,
38e478c4 JK	282	.quota_disable = xfs_quota_disable,
9da93f9b	283	.rm_xquota = xfs_fs_rm_xquota,
b9b2dd36	284	.get_dqblk = xfs_fs_get_dqblk,
296c24e2	285	.get_nextdqblk = xfs_fs_get_nextdqblk,
c472b432	286	.set_dqblk = xfs_fs_set_dqblk,
fcafb71b	287	};