mirror of https://gitee.com/openkylin/linux.git
303 lines
7.1 KiB
C
303 lines
7.1 KiB
C
/*
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* Copyright (c) 2008, Christoph Hellwig
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.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_trace.h"
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#include "xfs_icache.h"
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#include "xfs_qm.h"
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#include <linux/quota.h>
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static void
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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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struct xfs_inode *ip,
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xfs_ino_t ino)
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{
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struct xfs_quotainfo *q = mp->m_quotainfo;
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bool tempqip = false;
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tstate->ino = ino;
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if (!ip && ino == NULLFSINO)
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return;
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if (!ip) {
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if (xfs_iget(mp, NULL, ino, 0, 0, &ip))
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return;
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tempqip = true;
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}
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tstate->flags |= QCI_SYSFILE;
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tstate->blocks = ip->i_d.di_nblocks;
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tstate->nextents = ip->i_d.di_nextents;
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tstate->spc_timelimit = q->qi_btimelimit;
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tstate->ino_timelimit = q->qi_itimelimit;
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tstate->rt_spc_timelimit = q->qi_rtbtimelimit;
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tstate->spc_warnlimit = q->qi_bwarnlimit;
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tstate->ino_warnlimit = q->qi_iwarnlimit;
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tstate->rt_spc_warnlimit = q->qi_rtbwarnlimit;
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if (tempqip)
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IRELE(ip);
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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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memset(state, 0, sizeof(*state));
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if (!XFS_IS_QUOTA_RUNNING(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_RUNNING(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_RUNNING(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_RUNNING(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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xfs_qm_fill_state(&state->s_state[USRQUOTA], mp, q->qi_uquotaip,
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mp->m_sb.sb_uquotino);
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xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp, q->qi_gquotaip,
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mp->m_sb.sb_gquotino);
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xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp, q->qi_pquotaip,
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mp->m_sb.sb_pquotino);
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return 0;
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}
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STATIC int
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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_DQ_USER;
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case GRPQUOTA:
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return XFS_DQ_GROUP;
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default:
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return XFS_DQ_PROJ;
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}
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}
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#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK | QC_WARNS_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->s_flags & MS_RDONLY)
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return -EROFS;
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ESRCH;
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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->s_flags & MS_RDONLY)
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return -EROFS;
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if (!XFS_IS_QUOTA_RUNNING(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->s_flags & MS_RDONLY)
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return -EROFS;
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -EINVAL;
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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->s_flags & MS_RDONLY)
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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)
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flags |= XFS_DQ_USER;
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if (uflags & FS_GROUP_QUOTA)
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flags |= XFS_DQ_GROUP;
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if (uflags & FS_PROJ_QUOTA)
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flags |= XFS_DQ_PROJ;
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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_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ESRCH;
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id = from_kqid(&init_user_ns, qid);
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return xfs_qm_scall_getquota(mp, &id,
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xfs_quota_type(qid.type), qdq, 0);
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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_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ESRCH;
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id = from_kqid(&init_user_ns, *qid);
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ret = xfs_qm_scall_getquota(mp, &id,
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xfs_quota_type(qid->type), qdq,
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XFS_QMOPT_DQNEXT);
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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->s_flags & MS_RDONLY)
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return -EROFS;
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ESRCH;
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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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