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2c4162be6c
Create a helper function to load quota inodes in the case where the dqtype and the sb quota inode fields correspond. This is true for nearly all the iget callsites in the quota code, except for when we're switching the group and project quota inodes. We'll need this in subsequent patches to make the metadir handling less convoluted. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
290 lines
6.3 KiB
C
290 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2008, Christoph Hellwig
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_inode.h"
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#include "xfs_quota.h"
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#include "xfs_trans.h"
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#include "xfs_icache.h"
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#include "xfs_qm.h"
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static int
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xfs_qm_fill_state(
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struct qc_type_state *tstate,
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struct xfs_mount *mp,
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xfs_dqtype_t type)
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{
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struct xfs_inode *ip;
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struct xfs_def_quota *defq;
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int error;
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error = xfs_qm_qino_load(mp, type, &ip);
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if (error) {
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tstate->ino = NULLFSINO;
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return error != -ENOENT ? error : 0;
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}
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defq = xfs_get_defquota(mp->m_quotainfo, type);
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tstate->ino = ip->i_ino;
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tstate->flags |= QCI_SYSFILE;
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tstate->blocks = ip->i_nblocks;
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tstate->nextents = ip->i_df.if_nextents;
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tstate->spc_timelimit = (u32)defq->blk.time;
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tstate->ino_timelimit = (u32)defq->ino.time;
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tstate->rt_spc_timelimit = (u32)defq->rtb.time;
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tstate->spc_warnlimit = 0;
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tstate->ino_warnlimit = 0;
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tstate->rt_spc_warnlimit = 0;
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xfs_irele(ip);
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return 0;
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}
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/*
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* Return quota status information, such as enforcements, quota file inode
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* numbers etc.
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*/
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static int
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xfs_fs_get_quota_state(
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struct super_block *sb,
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struct qc_state *state)
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{
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struct xfs_mount *mp = XFS_M(sb);
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struct xfs_quotainfo *q = mp->m_quotainfo;
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int error;
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memset(state, 0, sizeof(*state));
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if (!XFS_IS_QUOTA_ON(mp))
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return 0;
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state->s_incoredqs = q->qi_dquots;
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if (XFS_IS_UQUOTA_ON(mp))
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state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED;
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if (XFS_IS_UQUOTA_ENFORCED(mp))
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state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
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if (XFS_IS_GQUOTA_ON(mp))
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state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED;
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if (XFS_IS_GQUOTA_ENFORCED(mp))
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state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
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if (XFS_IS_PQUOTA_ON(mp))
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state->s_state[PRJQUOTA].flags |= QCI_ACCT_ENABLED;
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if (XFS_IS_PQUOTA_ENFORCED(mp))
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state->s_state[PRJQUOTA].flags |= QCI_LIMITS_ENFORCED;
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error = xfs_qm_fill_state(&state->s_state[USRQUOTA], mp,
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XFS_DQTYPE_USER);
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if (error)
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return error;
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error = xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp,
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XFS_DQTYPE_GROUP);
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if (error)
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return error;
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error = xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp,
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XFS_DQTYPE_PROJ);
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if (error)
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return error;
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return 0;
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}
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STATIC xfs_dqtype_t
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xfs_quota_type(int type)
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{
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switch (type) {
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case USRQUOTA:
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return XFS_DQTYPE_USER;
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case GRPQUOTA:
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return XFS_DQTYPE_GROUP;
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default:
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return XFS_DQTYPE_PROJ;
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}
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}
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#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK)
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/*
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* Adjust quota timers & warnings
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*/
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static int
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xfs_fs_set_info(
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struct super_block *sb,
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int type,
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struct qc_info *info)
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{
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struct xfs_mount *mp = XFS_M(sb);
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struct qc_dqblk newlim;
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if (sb_rdonly(sb))
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return -EROFS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ENOSYS;
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if (info->i_fieldmask & ~XFS_QC_SETINFO_MASK)
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return -EINVAL;
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if ((info->i_fieldmask & XFS_QC_SETINFO_MASK) == 0)
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return 0;
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newlim.d_fieldmask = info->i_fieldmask;
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newlim.d_spc_timer = info->i_spc_timelimit;
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newlim.d_ino_timer = info->i_ino_timelimit;
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newlim.d_rt_spc_timer = info->i_rt_spc_timelimit;
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newlim.d_ino_warns = info->i_ino_warnlimit;
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newlim.d_spc_warns = info->i_spc_warnlimit;
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newlim.d_rt_spc_warns = info->i_rt_spc_warnlimit;
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return xfs_qm_scall_setqlim(mp, 0, xfs_quota_type(type), &newlim);
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}
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static unsigned int
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xfs_quota_flags(unsigned int uflags)
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{
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unsigned int flags = 0;
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if (uflags & FS_QUOTA_UDQ_ACCT)
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flags |= XFS_UQUOTA_ACCT;
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if (uflags & FS_QUOTA_PDQ_ACCT)
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flags |= XFS_PQUOTA_ACCT;
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if (uflags & FS_QUOTA_GDQ_ACCT)
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flags |= XFS_GQUOTA_ACCT;
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if (uflags & FS_QUOTA_UDQ_ENFD)
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flags |= XFS_UQUOTA_ENFD;
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if (uflags & FS_QUOTA_GDQ_ENFD)
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flags |= XFS_GQUOTA_ENFD;
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if (uflags & FS_QUOTA_PDQ_ENFD)
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flags |= XFS_PQUOTA_ENFD;
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return flags;
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}
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STATIC int
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xfs_quota_enable(
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struct super_block *sb,
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unsigned int uflags)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (sb_rdonly(sb))
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return -EROFS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ENOSYS;
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return xfs_qm_scall_quotaon(mp, xfs_quota_flags(uflags));
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}
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STATIC int
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xfs_quota_disable(
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struct super_block *sb,
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unsigned int uflags)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (sb_rdonly(sb))
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return -EROFS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ENOSYS;
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return xfs_qm_scall_quotaoff(mp, xfs_quota_flags(uflags));
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}
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STATIC int
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xfs_fs_rm_xquota(
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struct super_block *sb,
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unsigned int uflags)
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{
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struct xfs_mount *mp = XFS_M(sb);
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unsigned int flags = 0;
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if (sb_rdonly(sb))
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return -EROFS;
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if (XFS_IS_QUOTA_ON(mp))
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return -EINVAL;
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if (uflags & ~(FS_USER_QUOTA | FS_GROUP_QUOTA | FS_PROJ_QUOTA))
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return -EINVAL;
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if (uflags & FS_USER_QUOTA)
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flags |= XFS_QMOPT_UQUOTA;
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if (uflags & FS_GROUP_QUOTA)
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flags |= XFS_QMOPT_GQUOTA;
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if (uflags & FS_PROJ_QUOTA)
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flags |= XFS_QMOPT_PQUOTA;
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return xfs_qm_scall_trunc_qfiles(mp, flags);
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}
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STATIC int
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xfs_fs_get_dqblk(
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struct super_block *sb,
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struct kqid qid,
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struct qc_dqblk *qdq)
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{
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struct xfs_mount *mp = XFS_M(sb);
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xfs_dqid_t id;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ENOSYS;
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id = from_kqid(&init_user_ns, qid);
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return xfs_qm_scall_getquota(mp, id, xfs_quota_type(qid.type), qdq);
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}
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/* Return quota info for active quota >= this qid */
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STATIC int
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xfs_fs_get_nextdqblk(
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struct super_block *sb,
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struct kqid *qid,
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struct qc_dqblk *qdq)
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{
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int ret;
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struct xfs_mount *mp = XFS_M(sb);
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xfs_dqid_t id;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ENOSYS;
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id = from_kqid(&init_user_ns, *qid);
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ret = xfs_qm_scall_getquota_next(mp, &id, xfs_quota_type(qid->type),
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qdq);
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if (ret)
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return ret;
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/* ID may be different, so convert back what we got */
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*qid = make_kqid(current_user_ns(), qid->type, id);
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return 0;
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}
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STATIC int
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xfs_fs_set_dqblk(
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struct super_block *sb,
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struct kqid qid,
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struct qc_dqblk *qdq)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (sb_rdonly(sb))
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return -EROFS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ENOSYS;
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return xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
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xfs_quota_type(qid.type), qdq);
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}
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const struct quotactl_ops xfs_quotactl_operations = {
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.get_state = xfs_fs_get_quota_state,
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.set_info = xfs_fs_set_info,
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.quota_enable = xfs_quota_enable,
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.quota_disable = xfs_quota_disable,
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.rm_xquota = xfs_fs_rm_xquota,
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.get_dqblk = xfs_fs_get_dqblk,
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.get_nextdqblk = xfs_fs_get_nextdqblk,
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.set_dqblk = xfs_fs_set_dqblk,
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};
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