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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / refs/heads/master / . / fs / gfs2 / quota.h
blob: 21ada332d55571021bda02fb55be74da43952388 [file] [log] [blame]
Thomas Gleixner7336d0e2019-05-31 01:09:56 -0700[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -0400[diff] [blame]4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]5 */
6
7#ifndef __QUOTA_DOT_H__
8#define __QUOTA_DOT_H__
9
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000[diff] [blame]10#include <linux/list_lru.h>
11
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]12struct gfs2_inode;
13struct gfs2_sbd;
14
Eric W. Biedermanf4108a62013-01-31 17:49:26 -0800[diff] [blame]15#define NO_UID_QUOTA_CHANGE INVALID_UID
16#define NO_GID_QUOTA_CHANGE INVALID_GID
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]17
Bob Peterson2fba46a2020-02-27 12:47:53 -0600[diff] [blame]18extern int gfs2_qa_get(struct gfs2_inode *ip);
19extern void gfs2_qa_put(struct gfs2_inode *ip);
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
Abhi Dasb8fbf472015-03-18 12:03:41 -0500[diff] [blame]26extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid,
27 struct gfs2_alloc_parms *ap);
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]28extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
Eric W. Biederman7c06b5d2013-01-31 20:27:54 -0800[diff] [blame]29 kuid_t uid, kgid_t gid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]30
Jan Karaceed1722012-07-03 16:45:28 +0200[diff] [blame]31extern int gfs2_quota_sync(struct super_block *sb, int type);
Eric W. Biedermaned87dab2013-01-31 19:42:40 -0800[diff] [blame]32extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]33
Steven Whitehouse9ac1b4d2008-11-19 10:08:22 +0000[diff] [blame]34extern int gfs2_quota_init(struct gfs2_sbd *sdp);
35extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
36extern int gfs2_quotad(void *data);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]37
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500[diff] [blame]38extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
39
Abhi Dasb8fbf472015-03-18 12:03:41 -0500[diff] [blame]40static inline int gfs2_quota_lock_check(struct gfs2_inode *ip,
41 struct gfs2_alloc_parms *ap)
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]42{
43 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
44 int ret;
Andreas Gruenbacher174d1232018-02-20 08:03:24 -0700[diff] [blame]45
46 ap->allowed = UINT_MAX; /* Assume we are permitted a whole lot */
Bob Peterson4ed0c302020-05-05 11:53:21 -0500[diff] [blame]47 if (capable(CAP_SYS_RESOURCE) ||
48 sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]49 return 0;
Eric W. Biedermanf4108a62013-01-31 17:49:26 -0800[diff] [blame]50 ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
Steven Whitehoused82661d2008-03-10 15:34:50 +0000[diff] [blame]51 if (ret)
52 return ret;
53 if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
54 return 0;
Abhi Dasb8fbf472015-03-18 12:03:41 -0500[diff] [blame]55 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]56 if (ret)
57 gfs2_quota_unlock(ip);
58 return ret;
59}
60
Steven Whitehousecc632e72009-09-15 09:59:02 +0100[diff] [blame]61extern const struct quotactl_ops gfs2_quotactl_ops;
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000[diff] [blame]62extern struct shrinker gfs2_qd_shrinker;
63extern struct list_lru gfs2_qd_lru;
Steven Whitehousec754fbb2013-12-12 10:47:59 +0000[diff] [blame]64extern void __init gfs2_quota_hash_init(void);
Abhijith Das0a7ab792009-01-07 16:03:37 -0600[diff] [blame]65
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]66#endif /* __QUOTA_DOT_H__ */