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 struct gfs2_inode; 14 struct gfs2_sbd; 15 struct shrink_control; 16 17 #define NO_UID_QUOTA_CHANGE INVALID_UID 18 #define NO_GID_QUOTA_CHANGE INVALID_GID 19 20 extern int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); 21 extern void gfs2_quota_unhold(struct gfs2_inode *ip); 22 23 extern int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); 24 extern void gfs2_quota_unlock(struct gfs2_inode *ip); 25 26 extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); 27 extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change, 28 kuid_t uid, kgid_t gid); 29 30 extern int gfs2_quota_sync(struct super_block *sb, int type); 31 extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid); 32 33 extern int gfs2_quota_init(struct gfs2_sbd *sdp); 34 extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp); 35 extern int gfs2_quotad(void *data); 36 37 extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp); 38 39 static 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; 45 ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); 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 56 extern unsigned long gfs2_qd_shrink_count(struct shrinker *shrink, 57 struct shrink_control *sc); 58 extern unsigned long gfs2_qd_shrink_scan(struct shrinker *shrink, 59 struct shrink_control *sc); 60 extern const struct quotactl_ops gfs2_quotactl_ops; 61 62 #endif /* __QUOTA_DOT_H__ */ 63