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 32 STATIC int 33 xfs_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 45 STATIC int 46 xfs_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 57 STATIC int 58 xfs_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 98 STATIC int 99 xfs_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 } 114 115 STATIC int 116 xfs_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 } 133 134 const 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