// 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 int
xfs_qm_fill_state(
struct qc_type_state *tstate,
struct xfs_mount *mp,
xfs_dqtype_t type)
{
struct xfs_inode *ip;
struct xfs_def_quota *defq;
int error;
error = xfs_qm_qino_load(mp, type, &ip);
if (error) {
tstate->ino = NULLFSINO;
return error != -ENOENT ? error : 0;
}
defq = xfs_get_defquota(mp->m_quotainfo, type);
tstate->ino = ip->i_ino;
tstate->flags |= QCI_SYSFILE;
tstate->blocks = ip->i_nblocks;
tstate->nextents = ip->i_df.if_nextents;
tstate->spc_timelimit = (u32)defq->blk.time;
tstate->ino_timelimit = (u32)defq->ino.time;
tstate->rt_spc_timelimit = (u32)defq->rtb.time;
tstate->spc_warnlimit = 0;
tstate->ino_warnlimit = 0;
tstate->rt_spc_warnlimit = 0;
xfs_irele(ip);
return 0;
}
/*
* 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;
int error;
memset(state, 0, sizeof(*state));
if (!XFS_IS_QUOTA_ON(mp))
return 0;
state->s_incoredqs = q->qi_dquots;
if (XFS_IS_UQUOTA_ON(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_ON(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_ON(mp))
state->s_state[PRJQUOTA].flags |= QCI_ACCT_ENABLED;
if (XFS_IS_PQUOTA_ENFORCED(mp))
state->s_state[PRJQUOTA].flags |= QCI_LIMITS_ENFORCED;
error = xfs_qm_fill_state(&state->s_state[USRQUOTA], mp,
XFS_DQTYPE_USER);
if (error)
return error;
error = xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp,
XFS_DQTYPE_GROUP);
if (error)
return error;
error = xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp,
XFS_DQTYPE_PROJ);
if (error)
return error;
return 0;
}
STATIC xfs_dqtype_t
xfs_quota_type(int type)
{
switch (type) {
case USRQUOTA:
return XFS_DQTYPE_USER;
case GRPQUOTA:
return XFS_DQTYPE_GROUP;
default:
return XFS_DQTYPE_PROJ;
}
}
#define XFS_QC_SETINFO_MASK (QC_TIMER_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_ON(mp))
return -ENOSYS;
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_ON(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_ON(mp))
return -ENOSYS;
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 | FS_GROUP_QUOTA | FS_PROJ_QUOTA))
return -EINVAL;
if (uflags & FS_USER_QUOTA)
flags |= XFS_QMOPT_UQUOTA;
if (uflags & FS_GROUP_QUOTA)
flags |= XFS_QMOPT_GQUOTA;
if (uflags & FS_PROJ_QUOTA)
flags |= XFS_QMOPT_PQUOTA;
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_ON(mp))
return -ENOSYS;
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_ON(mp))
return -ENOSYS;
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_ON(mp))
return -ENOSYS;
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,
};
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