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gerrit-public.fairphone.software / kernel / msm-4.9 / baf6b1921da38ee9549e80511a9c8b9b0542f127 / . / fs / gfs2 / quota.h
blob: 836f29480be6719c61dc2380a42b8556c6c88a99 [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 Whitehouse2147dbf2013-11-04 10:15:08 +0000[diff] [blame]13#include <linux/list_lru.h>
14
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]15struct gfs2_inode;
16struct gfs2_sbd;
17
Eric W. Biedermanf4108a62013-01-31 17:49:26 -0800[diff] [blame]18#define NO_UID_QUOTA_CHANGE INVALID_UID
19#define NO_GID_QUOTA_CHANGE INVALID_GID
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]20
Bob Petersonb54e9a02015-10-26 10:40:28 -0500[diff] [blame]21extern int gfs2_qa_alloc(struct gfs2_inode *ip);
Bob Petersona097dc7e2015-07-16 08:28:04 -0500[diff] [blame]22extern void gfs2_qa_delete(struct gfs2_inode *ip, atomic_t *wcount);
Eric W. Biederman7c06b5d2013-01-31 20:27:54 -0800[diff] [blame]23extern int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]24extern void gfs2_quota_unhold(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_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]27extern void gfs2_quota_unlock(struct gfs2_inode *ip);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]28
Abhi Dasb8fbf472015-03-18 12:03:41 -0500[diff] [blame]29extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid,
30 struct gfs2_alloc_parms *ap);
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]31extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
Eric W. Biederman7c06b5d2013-01-31 20:27:54 -0800[diff] [blame]32 kuid_t uid, kgid_t gid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]33
Jan Karaceed1722012-07-03 16:45:28 +0200[diff] [blame]34extern int gfs2_quota_sync(struct super_block *sb, int type);
Eric W. Biedermaned87dab2013-01-31 19:42:40 -0800[diff] [blame]35extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]36
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]37extern int gfs2_quota_init(struct gfs2_sbd *sdp);
38extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
39extern int gfs2_quotad(void *data);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]40
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500[diff] [blame]41extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
42
Abhi Dasb8fbf472015-03-18 12:03:41 -0500[diff] [blame]43static inline int gfs2_quota_lock_check(struct gfs2_inode *ip,
44 struct gfs2_alloc_parms *ap)
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]45{
46 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
47 int ret;
Andreas Gruenbacher44b65512018-02-20 08:03:24 -0700[diff] [blame]48
49 ap->allowed = UINT_MAX; /* Assume we are permitted a whole lot */
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]50 if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
51 return 0;
Eric W. Biedermanf4108a62013-01-31 17:49:26 -0800[diff] [blame]52 ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]53 if (ret)
54 return ret;
55 if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
56 return 0;
Abhi Dasb8fbf472015-03-18 12:03:41 -0500[diff] [blame]57 ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid, ap);
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]58 if (ret)
59 gfs2_quota_unlock(ip);
60 return ret;
61}
62
Steven Whitehousecc632e72009-09-15 09:59:02 +0100[diff] [blame]63extern const struct quotactl_ops gfs2_quotactl_ops;
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000[diff] [blame]64extern struct shrinker gfs2_qd_shrinker;
65extern struct list_lru gfs2_qd_lru;
Steven Whitehousec754fbb2013-12-12 10:47:59 +0000[diff] [blame]66extern void __init gfs2_quota_hash_init(void);
Abhijith Das0a7ab792009-01-07 16:03:37 -0600[diff] [blame]67
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]68#endif /* __QUOTA_DOT_H__ */