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_mount.h" 23 #include "xfs_inode.h" 24 #include "xfs_quota.h" 25 #include "xfs_trans.h" 26 #include "xfs_qm.h" 27 #include <linux/quota.h> 28 29 30 STATIC int 31 xfs_quota_type(int type) 32 { 33 switch (type) { 34 case USRQUOTA: 35 return XFS_DQ_USER; 36 case GRPQUOTA: 37 return XFS_DQ_GROUP; 38 default: 39 return XFS_DQ_PROJ; 40 } 41 } 42 43 STATIC int 44 xfs_fs_get_xstate( 45 struct super_block *sb, 46 struct fs_quota_stat *fqs) 47 { 48 struct xfs_mount *mp = XFS_M(sb); 49 50 if (!XFS_IS_QUOTA_RUNNING(mp)) 51 return -ENOSYS; 52 return xfs_qm_scall_getqstat(mp, fqs); 53 } 54 55 STATIC int 56 xfs_fs_get_xstatev( 57 struct super_block *sb, 58 struct fs_quota_statv *fqs) 59 { 60 struct xfs_mount *mp = XFS_M(sb); 61 62 if (!XFS_IS_QUOTA_RUNNING(mp)) 63 return -ENOSYS; 64 return xfs_qm_scall_getqstatv(mp, fqs); 65 } 66 67 STATIC int 68 xfs_fs_set_xstate( 69 struct super_block *sb, 70 unsigned int uflags, 71 int op) 72 { 73 struct xfs_mount *mp = XFS_M(sb); 74 unsigned int flags = 0; 75 76 if (sb->s_flags & MS_RDONLY) 77 return -EROFS; 78 if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp)) 79 return -ENOSYS; 80 81 if (uflags & FS_QUOTA_UDQ_ACCT) 82 flags |= XFS_UQUOTA_ACCT; 83 if (uflags & FS_QUOTA_PDQ_ACCT) 84 flags |= XFS_PQUOTA_ACCT; 85 if (uflags & FS_QUOTA_GDQ_ACCT) 86 flags |= XFS_GQUOTA_ACCT; 87 if (uflags & FS_QUOTA_UDQ_ENFD) 88 flags |= XFS_UQUOTA_ENFD; 89 if (uflags & FS_QUOTA_GDQ_ENFD) 90 flags |= XFS_GQUOTA_ENFD; 91 if (uflags & FS_QUOTA_PDQ_ENFD) 92 flags |= XFS_PQUOTA_ENFD; 93 94 switch (op) { 95 case Q_XQUOTAON: 96 return xfs_qm_scall_quotaon(mp, flags); 97 case Q_XQUOTAOFF: 98 if (!XFS_IS_QUOTA_ON(mp)) 99 return -EINVAL; 100 return xfs_qm_scall_quotaoff(mp, flags); 101 } 102 103 return -EINVAL; 104 } 105 106 STATIC int 107 xfs_fs_rm_xquota( 108 struct super_block *sb, 109 unsigned int uflags) 110 { 111 struct xfs_mount *mp = XFS_M(sb); 112 unsigned int flags = 0; 113 114 if (sb->s_flags & MS_RDONLY) 115 return -EROFS; 116 117 if (XFS_IS_QUOTA_ON(mp)) 118 return -EINVAL; 119 120 if (uflags & FS_USER_QUOTA) 121 flags |= XFS_DQ_USER; 122 if (uflags & FS_GROUP_QUOTA) 123 flags |= XFS_DQ_GROUP; 124 if (uflags & FS_PROJ_QUOTA) 125 flags |= XFS_DQ_PROJ; 126 127 return xfs_qm_scall_trunc_qfiles(mp, flags); 128 } 129 130 STATIC int 131 xfs_fs_get_dqblk( 132 struct super_block *sb, 133 struct kqid qid, 134 struct fs_disk_quota *fdq) 135 { 136 struct xfs_mount *mp = XFS_M(sb); 137 138 if (!XFS_IS_QUOTA_RUNNING(mp)) 139 return -ENOSYS; 140 if (!XFS_IS_QUOTA_ON(mp)) 141 return -ESRCH; 142 143 return xfs_qm_scall_getquota(mp, from_kqid(&init_user_ns, qid), 144 xfs_quota_type(qid.type), fdq); 145 } 146 147 STATIC int 148 xfs_fs_set_dqblk( 149 struct super_block *sb, 150 struct kqid qid, 151 struct fs_disk_quota *fdq) 152 { 153 struct xfs_mount *mp = XFS_M(sb); 154 155 if (sb->s_flags & MS_RDONLY) 156 return -EROFS; 157 if (!XFS_IS_QUOTA_RUNNING(mp)) 158 return -ENOSYS; 159 if (!XFS_IS_QUOTA_ON(mp)) 160 return -ESRCH; 161 162 return xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid), 163 xfs_quota_type(qid.type), fdq); 164 } 165 166 const struct quotactl_ops xfs_quotactl_operations = { 167 .get_xstatev = xfs_fs_get_xstatev, 168 .get_xstate = xfs_fs_get_xstate, 169 .set_xstate = xfs_fs_set_xstate, 170 .rm_xquota = xfs_fs_rm_xquota, 171 .get_dqblk = xfs_fs_get_dqblk, 172 .set_dqblk = xfs_fs_set_dqblk, 173 }; 174