/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. */ #ifndef __QUOTA_DOT_H__ #define __QUOTA_DOT_H__ #include <linux/list_lru.h> struct gfs2_inode; struct gfs2_sbd; #define NO_UID_QUOTA_CHANGE INVALID_UID #define NO_GID_QUOTA_CHANGE INVALID_GID int gfs2_qa_get(struct gfs2_inode *ip); void gfs2_qa_put(struct gfs2_inode *ip); int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); void gfs2_quota_unhold(struct gfs2_inode *ip); int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); void gfs2_quota_unlock(struct gfs2_inode *ip); int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid, struct gfs2_alloc_parms *ap); void gfs2_quota_change(struct gfs2_inode *ip, s64 change, kuid_t uid, kgid_t gid); int gfs2_quota_sync(struct super_block *sb, int type); int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid); int gfs2_quota_init(struct gfs2_sbd *sdp); void gfs2_quota_cleanup(struct gfs2_sbd *sdp); int gfs2_quotad(void *data); void gfs2_wake_up_statfs(struct gfs2_sbd *sdp); static inline int gfs2_quota_lock_check(struct gfs2_inode *ip, struct gfs2_alloc_parms *ap) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); int ret; ap->allowed = UINT_MAX; /* Assume we are permitted a whole lot */ if (capable(CAP_SYS_RESOURCE) || sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) return 0; ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); if (ret) return ret; if (sdp->sd_args.ar_quota == GFS2_QUOTA_ACCOUNT) return 0; ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid, ap); if (ret) gfs2_quota_unlock(ip); return ret; } extern const struct quotactl_ops gfs2_quotactl_ops; int __init gfs2_qd_shrinker_init(void); void gfs2_qd_shrinker_exit(void); extern struct list_lru gfs2_qd_lru; void __init gfs2_quota_hash_init(void); #endif /* __QUOTA_DOT_H__ */