| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
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| 4 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
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| 5 | */ |
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| 6 | |
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| 7 | #ifndef __QUOTA_DOT_H__ |
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| 8 | #define __QUOTA_DOT_H__ |
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| 9 | |
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| 10 | #include <linux/list_lru.h> |
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| 11 | |
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| 12 | struct gfs2_inode; |
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| 13 | struct gfs2_sbd; |
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| 14 | |
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| 15 | #define NO_UID_QUOTA_CHANGE INVALID_UID |
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| 16 | #define NO_GID_QUOTA_CHANGE INVALID_GID |
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| 17 | |
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| 18 | int gfs2_qa_get(struct gfs2_inode *ip); |
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| 19 | void gfs2_qa_put(struct gfs2_inode *ip); |
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| 20 | int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); |
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| 21 | void gfs2_quota_unhold(struct gfs2_inode *ip); |
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| 22 | |
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| 23 | int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid); |
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| 24 | void gfs2_quota_unlock(struct gfs2_inode *ip); |
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| 25 | |
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| 26 | int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid, |
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| 27 | struct gfs2_alloc_parms *ap); |
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| 28 | void gfs2_quota_change(struct gfs2_inode *ip, s64 change, |
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| 29 | kuid_t uid, kgid_t gid); |
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| 30 | |
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| 31 | int gfs2_quota_sync(struct super_block *sb, int type); |
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| 32 | int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid); |
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| 33 | |
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| 34 | int gfs2_quota_init(struct gfs2_sbd *sdp); |
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| 35 | void gfs2_quota_cleanup(struct gfs2_sbd *sdp); |
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| 36 | int gfs2_quotad(void *data); |
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| 37 | |
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| 38 | void gfs2_wake_up_statfs(struct gfs2_sbd *sdp); |
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| 39 | |
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| 40 | static inline int gfs2_quota_lock_check(struct gfs2_inode *ip, |
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| 41 | struct gfs2_alloc_parms *ap) |
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| 42 | { |
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| 43 | struct gfs2_sbd *sdp = GFS2_SB(inode: &ip->i_inode); |
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| 44 | int ret; |
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| 45 | |
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| 46 | ap->allowed = UINT_MAX; /* Assume we are permitted a whole lot */ |
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| 47 | if (capable(CAP_SYS_RESOURCE) || |
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| 48 | sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) |
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| 49 | return 0; |
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| 50 | ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); |
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| 51 | if (ret) |
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| 52 | return ret; |
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| 53 | if (sdp->sd_args.ar_quota == GFS2_QUOTA_ACCOUNT) |
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| 54 | return 0; |
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| 55 | ret = gfs2_quota_check(ip, uid: ip->i_inode.i_uid, gid: ip->i_inode.i_gid, ap); |
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| 56 | if (ret) |
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| 57 | gfs2_quota_unlock(ip); |
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| 58 | return ret; |
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| 59 | } |
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| 60 | |
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| 61 | extern const struct quotactl_ops gfs2_quotactl_ops; |
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| 62 | int __init gfs2_qd_shrinker_init(void); |
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| 63 | void gfs2_qd_shrinker_exit(void); |
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| 64 | extern struct list_lru gfs2_qd_lru; |
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| 65 | |
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| 66 | void __init gfs2_quota_hash_init(void); |
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| 67 | |
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| 68 | #endif /* __QUOTA_DOT_H__ */ |
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| 69 | |
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