fs/xfs/linux-2.6/xfs_quotaops.c

   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_dmapi.h"
  20 #include "xfs_sb.h"
  21 #include "xfs_inum.h"
  22 #include "xfs_log.h"
  23 #include "xfs_ag.h"
  24 #include "xfs_mount.h"
  25 #include "xfs_quota.h"
  26 #include "xfs_log.h"
  27 #include "xfs_trans.h"
  28 #include "xfs_bmap_btree.h"
  29 #include "xfs_inode.h"
  30 #include "quota/xfs_qm.h"
  31 #include <linux/quota.h>
  32
  33
  34 STATIC int
  35 xfs_quota_type(int type)
  36 {
  37         switch (type) {
  38         case USRQUOTA:
  39                 return XFS_DQ_USER;
  40         case GRPQUOTA:
  41                 return XFS_DQ_GROUP;
  42         default:
  43                 return XFS_DQ_PROJ;
  44         }
  45 }
  46
  47 STATIC int
  48 xfs_fs_get_xstate(
  49         struct super_block      *sb,
  50         struct fs_quota_stat    *fqs)
  51 {
  52         struct xfs_mount        *mp = XFS_M(sb);
  53
  54         if (!XFS_IS_QUOTA_RUNNING(mp))
  55                 return -ENOSYS;
  56         return -xfs_qm_scall_getqstat(mp, fqs);
  57 }
  58
  59 STATIC int
  60 xfs_fs_set_xstate(
  61         struct super_block      *sb,
  62         unsigned int            uflags,
  63         int                     op)
  64 {
  65         struct xfs_mount        *mp = XFS_M(sb);
  66         unsigned int            flags = 0;
  67
  68         if (sb->s_flags & MS_RDONLY)
  69                 return -EROFS;
  70         if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp))
  71                 return -ENOSYS;
  72
  73         if (uflags & XFS_QUOTA_UDQ_ACCT)
  74                 flags |= XFS_UQUOTA_ACCT;
  75         if (uflags & XFS_QUOTA_PDQ_ACCT)
  76                 flags |= XFS_PQUOTA_ACCT;
  77         if (uflags & XFS_QUOTA_GDQ_ACCT)
  78                 flags |= XFS_GQUOTA_ACCT;
  79         if (uflags & XFS_QUOTA_UDQ_ENFD)
  80                 flags |= XFS_UQUOTA_ENFD;
  81         if (uflags & (XFS_QUOTA_PDQ_ENFD|XFS_QUOTA_GDQ_ENFD))
  82                 flags |= XFS_OQUOTA_ENFD;
  83
  84         switch (op) {
  85         case Q_XQUOTAON:
  86                 return -xfs_qm_scall_quotaon(mp, flags);
  87         case Q_XQUOTAOFF:
  88                 if (!XFS_IS_QUOTA_ON(mp))
  89                         return -EINVAL;
  90                 return -xfs_qm_scall_quotaoff(mp, flags);
  91         case Q_XQUOTARM:
  92                 if (XFS_IS_QUOTA_ON(mp))
  93                         return -EINVAL;
  94                 return -xfs_qm_scall_trunc_qfiles(mp, flags);
  95         }
  96
  97         return -EINVAL;
  98 }
  99
 100 STATIC int
 101 xfs_fs_get_xquota(
 102         struct super_block      *sb,
 103         int                     type,
 104         qid_t                   id,
 105         struct fs_disk_quota    *fdq)
 106 {
 107         struct xfs_mount        *mp = XFS_M(sb);
 108
 109         if (!XFS_IS_QUOTA_RUNNING(mp))
 110                 return -ENOSYS;
 111         if (!XFS_IS_QUOTA_ON(mp))
 112                 return -ESRCH;
 113
 114         return -xfs_qm_scall_getquota(mp, id, xfs_quota_type(type), fdq);
 115 }
 116
 117 STATIC int
 118 xfs_fs_set_xquota(
 119         struct super_block      *sb,
 120         int                     type,
 121         qid_t                   id,
 122         struct fs_disk_quota    *fdq)
 123 {
 124         struct xfs_mount        *mp = XFS_M(sb);
 125
 126         if (sb->s_flags & MS_RDONLY)
 127                 return -EROFS;
 128         if (!XFS_IS_QUOTA_RUNNING(mp))
 129                 return -ENOSYS;
 130         if (!XFS_IS_QUOTA_ON(mp))
 131                 return -ESRCH;
 132
 133         return -xfs_qm_scall_setqlim(mp, id, xfs_quota_type(type), fdq);
 134 }
 135
 136 const struct quotactl_ops xfs_quotactl_operations = {
 137         .get_xstate             = xfs_fs_get_xstate,
 138         .set_xstate             = xfs_fs_set_xstate,
 139         .get_xquota             = xfs_fs_get_xquota,
 140         .set_xquota             = xfs_fs_set_xquota,
 141 };