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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2018 Red Hat | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #ifndef CEPH_ANCHOR_H | |
16 | #define CEPH_ANCHOR_H | |
17 | ||
18 | #include <string> | |
19 | ||
20 | #include "include/types.h" | |
21 | #include "mdstypes.h" | |
22 | #include "include/buffer.h" | |
23 | ||
24 | /* | |
25 | * Anchor represents primary linkage of an inode. When adding inode to an | |
26 | * anchor table, MDS ensures that the table also contains inode's ancestor | |
27 | * inodes. MDS can get inode's path by looking up anchor table recursively. | |
28 | */ | |
29 | class Anchor { | |
30 | public: | |
11fdf7f2 TL |
31 | Anchor() {} |
32 | Anchor(inodeno_t i, inodeno_t di, std::string_view str, __u8 tp) : | |
33 | ino(i), dirino(di), d_name(str), d_type(tp) {} | |
34 | ||
35 | void encode(bufferlist &bl) const; | |
36 | void decode(bufferlist::const_iterator &bl); | |
37 | void dump(Formatter *f) const; | |
9f95a23c | 38 | static void generate_test_instances(std::list<Anchor*>& ls); |
f91f0fd5 | 39 | bool operator==(const Anchor &r) const { |
9f95a23c | 40 | return ino == r.ino && dirino == r.dirino && |
f91f0fd5 TL |
41 | d_name == r.d_name && d_type == r.d_type && |
42 | frags == r.frags; | |
9f95a23c | 43 | } |
11fdf7f2 | 44 | |
9f95a23c TL |
45 | inodeno_t ino; // anchored ino |
46 | inodeno_t dirino; | |
47 | std::string d_name; | |
48 | __u8 d_type = 0; | |
f91f0fd5 | 49 | std::set<frag_t> frags; |
11fdf7f2 | 50 | |
9f95a23c TL |
51 | int omap_idx = -1; // stored in which omap object |
52 | }; | |
53 | WRITE_CLASS_ENCODER(Anchor) | |
11fdf7f2 TL |
54 | |
55 | class RecoveredAnchor : public Anchor { | |
56 | public: | |
57 | RecoveredAnchor() {} | |
58 | ||
59 | mds_rank_t auth = MDS_RANK_NONE; // auth hint | |
60 | }; | |
61 | ||
62 | class OpenedAnchor : public Anchor { | |
63 | public: | |
64 | OpenedAnchor(inodeno_t i, inodeno_t di, std::string_view str, __u8 tp, int nr) : | |
65 | Anchor(i, di, str, tp), | |
66 | nref(nr) | |
67 | {} | |
68 | ||
69 | mutable int nref = 0; // how many children | |
70 | }; | |
71 | ||
9f95a23c | 72 | ostream& operator<<(ostream& out, const Anchor &a); |
11fdf7f2 | 73 | #endif |