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gerrit-public.fairphone.software / kernel / msm-4.9 / e1e5a9f84e4dbd3567bb8b0d5e79db6e1e5ebc35 / . / fs / gfs2 / quota.h
blob: 4f5e6e44ed8320feec952a71096cc55b1b385a96 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -0400[diff] [blame]3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -0400[diff] [blame]7 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]8 */
9
10#ifndef __QUOTA_DOT_H__
11#define __QUOTA_DOT_H__
12
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]13struct gfs2_inode;
14struct gfs2_sbd;
Ying Han1495f232011-05-24 17:12:27 -0700[diff] [blame]15struct shrink_control;
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]16
Eric W. Biedermanf4108a62013-01-31 17:49:26 -0800[diff] [blame]17#define NO_UID_QUOTA_CHANGE INVALID_UID
18#define NO_GID_QUOTA_CHANGE INVALID_GID
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]19
Eric W. Biederman7c06b5d2013-01-31 20:27:54 -0800[diff] [blame]20extern int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]21extern void gfs2_quota_unhold(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]22
Eric W. Biederman7c06b5d2013-01-31 20:27:54 -0800[diff] [blame]23extern int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]24extern void gfs2_quota_unlock(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]25
Eric W. Biederman7c06b5d2013-01-31 20:27:54 -0800[diff] [blame]26extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]27extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
Eric W. Biederman7c06b5d2013-01-31 20:27:54 -0800[diff] [blame]28 kuid_t uid, kgid_t gid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]29
Jan Karaceed1722012-07-03 16:45:28 +0200[diff] [blame]30extern int gfs2_quota_sync(struct super_block *sb, int type);
Eric W. Biedermaned87dab2013-01-31 19:42:40 -0800[diff] [blame]31extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]32
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]33extern int gfs2_quota_init(struct gfs2_sbd *sdp);
34extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
35extern int gfs2_quotad(void *data);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]36
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500[diff] [blame]37extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
38
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]39static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
40{
41 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
42 int ret;
43 if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
44 return 0;
Eric W. Biedermanf4108a62013-01-31 17:49:26 -0800[diff] [blame]45 ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]46 if (ret)
47 return ret;
48 if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
49 return 0;
50 ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
51 if (ret)
52 gfs2_quota_unlock(ip);
53 return ret;
54}
55
Ying Han1495f232011-05-24 17:12:27 -0700[diff] [blame]56extern int gfs2_shrink_qd_memory(struct shrinker *shrink,
57 struct shrink_control *sc);
Steven Whitehousecc632e72009-09-15 09:59:02 +0100[diff] [blame]58extern const struct quotactl_ops gfs2_quotactl_ops;
Abhijith Das0a7ab792009-01-07 16:03:37 -0600[diff] [blame]59
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]60#endif /* __QUOTA_DOT_H__ */