LXR linux/fs/xfs/xfs

   1/*
   2 * Copyright (c) 2008, Christoph Hellwig
   3 * All Rights Reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it would be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write the Free Software Foundation,
  16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18#include "xfs.h"
  19#include "xfs_sb.h"
  20#include "xfs_inum.h"
  21#include "xfs_log.h"
  22#include "xfs_ag.h"
  23#include "xfs_mount.h"
  24#include "xfs_quota.h"
  25#include "xfs_trans.h"
  26#include "xfs_bmap_btree.h"
  27#include "xfs_inode.h"
  28#include "xfs_qm.h"
  29#include <linux/quota.h>
  30
  31
  32STATIC int
  33xfs_quota_type(int type)
  34{
  35        switch (type) {
  36        case USRQUOTA:
  37                return XFS_DQ_USER;
  38        case GRPQUOTA:
  39                return XFS_DQ_GROUP;
  40        default:
  41                return XFS_DQ_PROJ;
  42        }
  43}
  44
  45STATIC int
  46xfs_fs_get_xstate(
  47        struct super_block      *sb,
  48        struct fs_quota_stat    *fqs)
  49{
  50        struct xfs_mount        *mp = XFS_M(sb);
  51
  52        if (!XFS_IS_QUOTA_RUNNING(mp))
  53                return -ENOSYS;
  54        return -xfs_qm_scall_getqstat(mp, fqs);
  55}
  56
  57STATIC int
  58xfs_fs_set_xstate(
  59        struct super_block      *sb,
  60        unsigned int            uflags,
  61        int                     op)
  62{
  63        struct xfs_mount        *mp = XFS_M(sb);
  64        unsigned int            flags = 0;
  65
  66        if (sb->s_flags & MS_RDONLY)
  67                return -EROFS;
  68        if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp))
  69                return -ENOSYS;
  70
  71        if (uflags & FS_QUOTA_UDQ_ACCT)
  72                flags |= XFS_UQUOTA_ACCT;
  73        if (uflags & FS_QUOTA_PDQ_ACCT)
  74                flags |= XFS_PQUOTA_ACCT;
  75        if (uflags & FS_QUOTA_GDQ_ACCT)
  76                flags |= XFS_GQUOTA_ACCT;
  77        if (uflags & FS_QUOTA_UDQ_ENFD)
  78                flags |= XFS_UQUOTA_ENFD;
  79        if (uflags & (FS_QUOTA_PDQ_ENFD|FS_QUOTA_GDQ_ENFD))
  80                flags |= XFS_OQUOTA_ENFD;
  81
  82        switch (op) {
  83        case Q_XQUOTAON:
  84                return -xfs_qm_scall_quotaon(mp, flags);
  85        case Q_XQUOTAOFF:
  86                if (!XFS_IS_QUOTA_ON(mp))
  87                        return -EINVAL;
  88                return -xfs_qm_scall_quotaoff(mp, flags);
  89        case Q_XQUOTARM:
  90                if (XFS_IS_QUOTA_ON(mp))
  91                        return -EINVAL;
  92                return -xfs_qm_scall_trunc_qfiles(mp, flags);
  93        }
  94
  95        return -EINVAL;
  96}
  97
  98STATIC int
  99xfs_fs_get_dqblk(
 100        struct super_block      *sb,
 101        int                     type,
 102        qid_t                   id,
 103        struct fs_disk_quota    *fdq)
 104{
 105        struct xfs_mount        *mp = XFS_M(sb);
 106
 107        if (!XFS_IS_QUOTA_RUNNING(mp))
 108                return -ENOSYS;
 109        if (!XFS_IS_QUOTA_ON(mp))
 110                return -ESRCH;
 111
 112        return -xfs_qm_scall_getquota(mp, id, xfs_quota_type(type), fdq);
 113}
 114
 115STATIC int
 116xfs_fs_set_dqblk(
 117        struct super_block      *sb,
 118        int                     type,
 119        qid_t                   id,
 120        struct fs_disk_quota    *fdq)
 121{
 122        struct xfs_mount        *mp = XFS_M(sb);
 123
 124        if (sb->s_flags & MS_RDONLY)
 125                return -EROFS;
 126        if (!XFS_IS_QUOTA_RUNNING(mp))
 127                return -ENOSYS;
 128        if (!XFS_IS_QUOTA_ON(mp))
 129                return -ESRCH;
 130
 131        return -xfs_qm_scall_setqlim(mp, id, xfs_quota_type(type), fdq);
 132}
 133
 134const struct quotactl_ops xfs_quotactl_operations = {
 135        .get_xstate             = xfs_fs_get_xstate,
 136        .set_xstate             = xfs_fs_set_xstate,
 137        .get_dqblk              = xfs_fs_get_dqblk,
 138        .set_dqblk              = xfs_fs_set_dqblk,
 139};
 140