1/*
 2 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 3 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 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
 7 * of the GNU General Public License version 2.
 8 */
 9
10#ifndef __QUOTA_DOT_H__
11#define __QUOTA_DOT_H__
12
13#include <linux/list_lru.h>
14
15struct gfs2_inode;
16struct gfs2_sbd;
17
18#define NO_UID_QUOTA_CHANGE INVALID_UID
19#define NO_GID_QUOTA_CHANGE INVALID_GID
20
21extern int gfs2_qa_alloc(struct gfs2_inode *ip);
22extern void gfs2_qa_delete(struct gfs2_inode *ip, atomic_t *wcount);
23extern int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
24extern void gfs2_quota_unhold(struct gfs2_inode *ip);
25
26extern int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
27extern void gfs2_quota_unlock(struct gfs2_inode *ip);
28
29extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid,
30			    struct gfs2_alloc_parms *ap);
31extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
32			      kuid_t uid, kgid_t gid);
33
34extern int gfs2_quota_sync(struct super_block *sb, int type);
35extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid);
36
37extern int gfs2_quota_init(struct gfs2_sbd *sdp);
38extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
39extern int gfs2_quotad(void *data);
40
41extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
42
43static inline int gfs2_quota_lock_check(struct gfs2_inode *ip,
44					struct gfs2_alloc_parms *ap)
45{
46	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
47	int ret;
 
 
48	if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
49		return 0;
50	ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
51	if (ret)
52		return ret;
53	if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
54		return 0;
55	ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid, ap);
56	if (ret)
57		gfs2_quota_unlock(ip);
58	return ret;
59}
60
61extern const struct quotactl_ops gfs2_quotactl_ops;
62extern struct shrinker gfs2_qd_shrinker;
63extern struct list_lru gfs2_qd_lru;
64extern void __init gfs2_quota_hash_init(void);
65
66#endif /* __QUOTA_DOT_H__ */

 1/*
 2 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 3 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 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
 7 * of the GNU General Public License version 2.
 8 */
 9
10#ifndef __QUOTA_DOT_H__
11#define __QUOTA_DOT_H__
12
13#include <linux/list_lru.h>
14
15struct gfs2_inode;
16struct gfs2_sbd;
17
18#define NO_UID_QUOTA_CHANGE INVALID_UID
19#define NO_GID_QUOTA_CHANGE INVALID_GID
20
21extern int gfs2_qa_alloc(struct gfs2_inode *ip);
22extern void gfs2_qa_delete(struct gfs2_inode *ip, atomic_t *wcount);
23extern int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
24extern void gfs2_quota_unhold(struct gfs2_inode *ip);
25
26extern int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
27extern void gfs2_quota_unlock(struct gfs2_inode *ip);
28
29extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid,
30			    struct gfs2_alloc_parms *ap);
31extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
32			      kuid_t uid, kgid_t gid);
33
34extern int gfs2_quota_sync(struct super_block *sb, int type);
35extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid);
36
37extern int gfs2_quota_init(struct gfs2_sbd *sdp);
38extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
39extern int gfs2_quotad(void *data);
40
41extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
42
43static inline int gfs2_quota_lock_check(struct gfs2_inode *ip,
44					struct gfs2_alloc_parms *ap)
45{
46	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
47	int ret;
48
49	ap->allowed = UINT_MAX; /* Assume we are permitted a whole lot */
50	if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
51		return 0;
52	ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
53	if (ret)
54		return ret;
55	if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
56		return 0;
57	ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid, ap);
58	if (ret)
59		gfs2_quota_unlock(ip);
60	return ret;
61}
62
63extern const struct quotactl_ops gfs2_quotactl_ops;
64extern struct shrinker gfs2_qd_shrinker;
65extern struct list_lru gfs2_qd_lru;
66extern void __init gfs2_quota_hash_init(void);
67
68#endif /* __QUOTA_DOT_H__ */