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_log.h" 21 #include "xfs_ag.h" 22 #include "xfs_mount.h" 23 #include "xfs_quota.h" 24 #include "xfs_trans.h" 25 #include "xfs_bmap_btree.h" 26 #include "xfs_inode.h" 27 #include "xfs_qm.h" 28 #include <linux/quota.h> 29 30 31 STATIC int 32 xfs_quota_type(int type) 33 { 34 switch (type) { 35 case USRQUOTA: 36 return XFS_DQ_USER; 37 case GRPQUOTA: 38 return XFS_DQ_GROUP; 39 default: 40 return XFS_DQ_PROJ; 41 } 42 } 43 44 STATIC int 45 xfs_fs_get_xstate( 46 struct super_block *sb, 47 struct fs_quota_stat *fqs) 48 { 49 struct xfs_mount *mp = XFS_M(sb); 50 51 if (!XFS_IS_QUOTA_RUNNING(mp)) 52 return -ENOSYS; 53 return -xfs_qm_scall_getqstat(mp, fqs); 54 } 55 56 STATIC int 57 xfs_fs_set_xstate( 58 struct super_block *sb, 59 unsigned int uflags, 60 int op) 61 { 62 struct xfs_mount *mp = XFS_M(sb); 63 unsigned int flags = 0; 64 65 if (sb->s_flags & MS_RDONLY) 66 return -EROFS; 67 if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp)) 68 return -ENOSYS; 69 70 if (uflags & FS_QUOTA_UDQ_ACCT) 71 flags |= XFS_UQUOTA_ACCT; 72 if (uflags & FS_QUOTA_PDQ_ACCT) 73 flags |= XFS_PQUOTA_ACCT; 74 if (uflags & FS_QUOTA_GDQ_ACCT) 75 flags |= XFS_GQUOTA_ACCT; 76 if (uflags & FS_QUOTA_UDQ_ENFD) 77 flags |= XFS_UQUOTA_ENFD; 78 if (uflags & FS_QUOTA_GDQ_ENFD) 79 flags |= XFS_GQUOTA_ENFD; 80 if (uflags & FS_QUOTA_PDQ_ENFD) 81 flags |= XFS_PQUOTA_ENFD; 82 83 switch (op) { 84 case Q_XQUOTAON: 85 return -xfs_qm_scall_quotaon(mp, flags); 86 case Q_XQUOTAOFF: 87 if (!XFS_IS_QUOTA_ON(mp)) 88 return -EINVAL; 89 return -xfs_qm_scall_quotaoff(mp, flags); 90 case Q_XQUOTARM: 91 if (XFS_IS_QUOTA_ON(mp)) 92 return -EINVAL; 93 return -xfs_qm_scall_trunc_qfiles(mp, flags); 94 } 95 96 return -EINVAL; 97 } 98 99 STATIC int 100 xfs_fs_get_dqblk( 101 struct super_block *sb, 102 struct kqid qid, 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, from_kqid(&init_user_ns, qid), 113 xfs_quota_type(qid.type), fdq); 114 } 115 116 STATIC int 117 xfs_fs_set_dqblk( 118 struct super_block *sb, 119 struct kqid qid, 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, from_kqid(&init_user_ns, qid), 132 xfs_quota_type(qid.type), fdq); 133 } 134 135 const struct quotactl_ops xfs_quotactl_operations = { 136 .get_xstate = xfs_fs_get_xstate, 137 .set_xstate = xfs_fs_set_xstate, 138 .get_dqblk = xfs_fs_get_dqblk, 139 .set_dqblk = xfs_fs_set_dqblk, 140 }; 141