/* * 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_mount.h" #include "xfs_inode.h" #include "xfs_quota.h" #include "xfs_trans.h" #include "xfs_trace.h" #include "xfs_icache.h" #include "xfs_qm.h" #include <linux/quota.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) 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->s_flags & MS_RDONLY) 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->s_flags & MS_RDONLY) 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->s_flags & MS_RDONLY) 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->s_flags & MS_RDONLY) 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, 0); } /* 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(mp, &id, xfs_quota_type(qid->type), qdq, XFS_QMOPT_DQNEXT); 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->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), 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, };