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_format.h" 20 #include "xfs_log_format.h" 21 #include "xfs_trans_resv.h" 22 #include "xfs_sb.h" 23 #include "xfs_ag.h" 24 #include "xfs_mount.h" 25 #include "xfs_inode.h" 26 #include "xfs_quota.h" 27 #include "xfs_trans.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_get_xstatev( 59 struct super_block *sb, 60 struct fs_quota_statv *fqs) 61 { 62 struct xfs_mount *mp = XFS_M(sb); 63 64 if (!XFS_IS_QUOTA_RUNNING(mp)) 65 return -ENOSYS; 66 return xfs_qm_scall_getqstatv(mp, fqs); 67 } 68 69 STATIC int 70 xfs_fs_set_xstate( 71 struct super_block *sb, 72 unsigned int uflags, 73 int op) 74 { 75 struct xfs_mount *mp = XFS_M(sb); 76 unsigned int flags = 0; 77 78 if (sb->s_flags & MS_RDONLY) 79 return -EROFS; 80 if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp)) 81 return -ENOSYS; 82 83 if (uflags & FS_QUOTA_UDQ_ACCT) 84 flags |= XFS_UQUOTA_ACCT; 85 if (uflags & FS_QUOTA_PDQ_ACCT) 86 flags |= XFS_PQUOTA_ACCT; 87 if (uflags & FS_QUOTA_GDQ_ACCT) 88 flags |= XFS_GQUOTA_ACCT; 89 if (uflags & FS_QUOTA_UDQ_ENFD) 90 flags |= XFS_UQUOTA_ENFD; 91 if (uflags & FS_QUOTA_GDQ_ENFD) 92 flags |= XFS_GQUOTA_ENFD; 93 if (uflags & FS_QUOTA_PDQ_ENFD) 94 flags |= XFS_PQUOTA_ENFD; 95 96 switch (op) { 97 case Q_XQUOTAON: 98 return xfs_qm_scall_quotaon(mp, flags); 99 case Q_XQUOTAOFF: 100 if (!XFS_IS_QUOTA_ON(mp)) 101 return -EINVAL; 102 return xfs_qm_scall_quotaoff(mp, flags); 103 } 104 105 return -EINVAL; 106 } 107 108 STATIC int 109 xfs_fs_rm_xquota( 110 struct super_block *sb, 111 unsigned int uflags) 112 { 113 struct xfs_mount *mp = XFS_M(sb); 114 unsigned int flags = 0; 115 116 if (sb->s_flags & MS_RDONLY) 117 return -EROFS; 118 119 if (XFS_IS_QUOTA_ON(mp)) 120 return -EINVAL; 121 122 if (uflags & FS_USER_QUOTA) 123 flags |= XFS_DQ_USER; 124 if (uflags & FS_GROUP_QUOTA) 125 flags |= XFS_DQ_GROUP; 126 if (uflags & FS_PROJ_QUOTA) 127 flags |= XFS_DQ_PROJ; 128 129 return xfs_qm_scall_trunc_qfiles(mp, flags); 130 } 131 132 STATIC int 133 xfs_fs_get_dqblk( 134 struct super_block *sb, 135 struct kqid qid, 136 struct fs_disk_quota *fdq) 137 { 138 struct xfs_mount *mp = XFS_M(sb); 139 140 if (!XFS_IS_QUOTA_RUNNING(mp)) 141 return -ENOSYS; 142 if (!XFS_IS_QUOTA_ON(mp)) 143 return -ESRCH; 144 145 return xfs_qm_scall_getquota(mp, from_kqid(&init_user_ns, qid), 146 xfs_quota_type(qid.type), fdq); 147 } 148 149 STATIC int 150 xfs_fs_set_dqblk( 151 struct super_block *sb, 152 struct kqid qid, 153 struct fs_disk_quota *fdq) 154 { 155 struct xfs_mount *mp = XFS_M(sb); 156 157 if (sb->s_flags & MS_RDONLY) 158 return -EROFS; 159 if (!XFS_IS_QUOTA_RUNNING(mp)) 160 return -ENOSYS; 161 if (!XFS_IS_QUOTA_ON(mp)) 162 return -ESRCH; 163 164 return xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid), 165 xfs_quota_type(qid.type), fdq); 166 } 167 168 const struct quotactl_ops xfs_quotactl_operations = { 169 .get_xstatev = xfs_fs_get_xstatev, 170 .get_xstate = xfs_fs_get_xstate, 171 .set_xstate = xfs_fs_set_xstate, 172 .rm_xquota = xfs_fs_rm_xquota, 173 .get_dqblk = xfs_fs_get_dqblk, 174 .set_dqblk = xfs_fs_set_dqblk, 175 }; 176