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https://github.com/edk2-porting/linux-next.git
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9da93f9b7c
The Q_XQUOTARM quotactl was not working properly, because we weren't passing around proper flags. The xfs_fs_set_xstate() ioctl handler used the same flags for Q_XQUOTAON/OFF as well as for Q_XQUOTARM, but Q_XQUOTAON/OFF look for XFS_UQUOTA_ACCT, XFS_UQUOTA_ENFD, XFS_GQUOTA_ACCT etc, i.e. quota type + state, while Q_XQUOTARM looks only for the type of quota, i.e. XFS_DQ_USER, XFS_DQ_GROUP etc. Unfortunately these flag spaces overlap a bit, so we got semi-random results for Q_XQUOTARM; i.e. the value for XFS_DQ_USER == XFS_UQUOTA_ACCT, etc. yeargh. Add a new quotactl op vector specifically for the QUOTARM operation, since it operates with a different flag space. This has been broken more or less forever, AFAICT. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Jan Kara <jack@suse.cz> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
176 lines
3.8 KiB
C
176 lines
3.8 KiB
C
/*
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* Copyright (c) 2008, Christoph Hellwig
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_mount.h"
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#include "xfs_inode.h"
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#include "xfs_quota.h"
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#include "xfs_trans.h"
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#include "xfs_qm.h"
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#include <linux/quota.h>
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STATIC int
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xfs_quota_type(int type)
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{
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switch (type) {
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case USRQUOTA:
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return XFS_DQ_USER;
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case GRPQUOTA:
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return XFS_DQ_GROUP;
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default:
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return XFS_DQ_PROJ;
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}
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}
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STATIC int
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xfs_fs_get_xstate(
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struct super_block *sb,
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struct fs_quota_stat *fqs)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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return -xfs_qm_scall_getqstat(mp, fqs);
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}
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STATIC int
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xfs_fs_get_xstatev(
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struct super_block *sb,
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struct fs_quota_statv *fqs)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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return -xfs_qm_scall_getqstatv(mp, fqs);
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}
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STATIC int
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xfs_fs_set_xstate(
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struct super_block *sb,
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unsigned int uflags,
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int op)
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{
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struct xfs_mount *mp = XFS_M(sb);
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unsigned int flags = 0;
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if (sb->s_flags & MS_RDONLY)
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return -EROFS;
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if (op != Q_XQUOTARM && !XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (uflags & FS_QUOTA_UDQ_ACCT)
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flags |= XFS_UQUOTA_ACCT;
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if (uflags & FS_QUOTA_PDQ_ACCT)
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flags |= XFS_PQUOTA_ACCT;
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if (uflags & FS_QUOTA_GDQ_ACCT)
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flags |= XFS_GQUOTA_ACCT;
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if (uflags & FS_QUOTA_UDQ_ENFD)
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flags |= XFS_UQUOTA_ENFD;
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if (uflags & FS_QUOTA_GDQ_ENFD)
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flags |= XFS_GQUOTA_ENFD;
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if (uflags & FS_QUOTA_PDQ_ENFD)
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flags |= XFS_PQUOTA_ENFD;
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switch (op) {
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case Q_XQUOTAON:
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return -xfs_qm_scall_quotaon(mp, flags);
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case Q_XQUOTAOFF:
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if (!XFS_IS_QUOTA_ON(mp))
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return -EINVAL;
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return -xfs_qm_scall_quotaoff(mp, flags);
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}
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return -EINVAL;
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}
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STATIC int
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xfs_fs_rm_xquota(
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struct super_block *sb,
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unsigned int uflags)
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{
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struct xfs_mount *mp = XFS_M(sb);
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unsigned int flags = 0;
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if (sb->s_flags & MS_RDONLY)
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return -EROFS;
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if (XFS_IS_QUOTA_ON(mp))
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return -EINVAL;
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if (uflags & FS_USER_QUOTA)
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flags |= XFS_DQ_USER;
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if (uflags & FS_GROUP_QUOTA)
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flags |= XFS_DQ_GROUP;
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if (uflags & FS_USER_QUOTA)
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flags |= XFS_DQ_PROJ;
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return -xfs_qm_scall_trunc_qfiles(mp, flags);
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}
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STATIC int
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xfs_fs_get_dqblk(
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struct super_block *sb,
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struct kqid qid,
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struct fs_disk_quota *fdq)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ESRCH;
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return -xfs_qm_scall_getquota(mp, from_kqid(&init_user_ns, qid),
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xfs_quota_type(qid.type), fdq);
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}
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STATIC int
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xfs_fs_set_dqblk(
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struct super_block *sb,
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struct kqid qid,
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struct fs_disk_quota *fdq)
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{
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struct xfs_mount *mp = XFS_M(sb);
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if (sb->s_flags & MS_RDONLY)
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return -EROFS;
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if (!XFS_IS_QUOTA_RUNNING(mp))
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return -ENOSYS;
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if (!XFS_IS_QUOTA_ON(mp))
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return -ESRCH;
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return -xfs_qm_scall_setqlim(mp, from_kqid(&init_user_ns, qid),
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xfs_quota_type(qid.type), fdq);
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}
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const struct quotactl_ops xfs_quotactl_operations = {
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.get_xstatev = xfs_fs_get_xstatev,
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.get_xstate = xfs_fs_get_xstate,
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.set_xstate = xfs_fs_set_xstate,
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.rm_xquota = xfs_fs_rm_xquota,
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.get_dqblk = xfs_fs_get_dqblk,
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.set_dqblk = xfs_fs_set_dqblk,
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};
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