| 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 | |
| 15 | struct gfs2_inode; |
| 16 | struct gfs2_sbd; |
| 17 | |
| 18 | #define NO_UID_QUOTA_CHANGE INVALID_UID |
| 19 | #define NO_GID_QUOTA_CHANGE INVALID_GID |
| 20 | |
| 21 | extern int gfs2_qa_alloc(struct gfs2_inode *ip); |
| 22 | extern void gfs2_qa_delete(struct gfs2_inode *ip, atomic_t *wcount); |
| 23 | extern int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); |
| 24 | extern void gfs2_quota_unhold(struct gfs2_inode *ip); |
| 25 | |
| 26 | extern int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); |
| 27 | extern void gfs2_quota_unlock(struct gfs2_inode *ip); |
| 28 | |
| 29 | extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid, |
| 30 | struct gfs2_alloc_parms *ap); |
| 31 | extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change, |
| 32 | kuid_t uid, kgid_t gid); |
| 33 | |
| 34 | extern int gfs2_quota_sync(struct super_block *sb, int type); |
| 35 | extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid); |
| 36 | |
| 37 | extern int gfs2_quota_init(struct gfs2_sbd *sdp); |
| 38 | extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp); |
| 39 | extern int gfs2_quotad(void *data); |
| 40 | |
| 41 | extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp); |
| 42 | |
| 43 | static 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 | |
| 61 | extern const struct quotactl_ops gfs2_quotactl_ops; |
| 62 | extern struct shrinker gfs2_qd_shrinker; |
| 63 | extern struct list_lru gfs2_qd_lru; |
| 64 | extern void __init gfs2_quota_hash_init(void); |
| 65 | |
| 66 | #endif /* __QUOTA_DOT_H__ */ |