diff options
Diffstat (limited to 'fs/xfs/xfs_quotaops.c')
| -rw-r--r-- | fs/xfs/xfs_quotaops.c | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c new file mode 100644 index 000000000..13ca7c16b --- /dev/null +++ b/fs/xfs/xfs_quotaops.c @@ -0,0 +1,291 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2008, Christoph Hellwig + * All Rights Reserved. + */ +#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) + 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 | FS_GROUP_QUOTA | FS_PROJ_QUOTA)) + 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, +}; |