1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* !! 2 /* -*- mode: c; c-basic-offset: 8; -*-
>> 3 * vim: noexpandtab sw=8 ts=8 sts=0:
>> 4 *
3 * ocfs2_lockid.h 5 * ocfs2_lockid.h
4 * 6 *
5 * Defines OCFS2 lockid bits. 7 * Defines OCFS2 lockid bits.
6 * 8 *
7 * Copyright (C) 2002, 2005 Oracle. All right 9 * Copyright (C) 2002, 2005 Oracle. All rights reserved.
8 */ 10 */
9 11
10 #ifndef OCFS2_LOCKID_H 12 #ifndef OCFS2_LOCKID_H
11 #define OCFS2_LOCKID_H 13 #define OCFS2_LOCKID_H
12 14
13 /* lock ids are made up in the following manne 15 /* lock ids are made up in the following manner:
14 * name[0] --> type 16 * name[0] --> type
15 * name[1-6] --> 6 pad characters, reserved 17 * name[1-6] --> 6 pad characters, reserved for now
16 * name[7-22] --> block number, expressed in 18 * name[7-22] --> block number, expressed in hex as 16 chars
17 * name[23-30] --> i_generation, expressed in 19 * name[23-30] --> i_generation, expressed in hex 8 chars
18 * name[31] --> '\0' */ 20 * name[31] --> '\0' */
19 #define OCFS2_LOCK_ID_MAX_LEN 32 21 #define OCFS2_LOCK_ID_MAX_LEN 32
20 #define OCFS2_LOCK_ID_PAD "000000" 22 #define OCFS2_LOCK_ID_PAD "000000"
21 23
22 #define OCFS2_DENTRY_LOCK_INO_START 18 24 #define OCFS2_DENTRY_LOCK_INO_START 18
23 25
24 enum ocfs2_lock_type { 26 enum ocfs2_lock_type {
25 OCFS2_LOCK_TYPE_META = 0, 27 OCFS2_LOCK_TYPE_META = 0,
26 OCFS2_LOCK_TYPE_DATA, 28 OCFS2_LOCK_TYPE_DATA,
27 OCFS2_LOCK_TYPE_SUPER, 29 OCFS2_LOCK_TYPE_SUPER,
28 OCFS2_LOCK_TYPE_RENAME, 30 OCFS2_LOCK_TYPE_RENAME,
29 OCFS2_LOCK_TYPE_RW, 31 OCFS2_LOCK_TYPE_RW,
30 OCFS2_LOCK_TYPE_DENTRY, 32 OCFS2_LOCK_TYPE_DENTRY,
31 OCFS2_LOCK_TYPE_OPEN, 33 OCFS2_LOCK_TYPE_OPEN,
32 OCFS2_LOCK_TYPE_FLOCK, 34 OCFS2_LOCK_TYPE_FLOCK,
33 OCFS2_LOCK_TYPE_QINFO, 35 OCFS2_LOCK_TYPE_QINFO,
34 OCFS2_LOCK_TYPE_NFS_SYNC, 36 OCFS2_LOCK_TYPE_NFS_SYNC,
35 OCFS2_LOCK_TYPE_ORPHAN_SCAN, 37 OCFS2_LOCK_TYPE_ORPHAN_SCAN,
36 OCFS2_LOCK_TYPE_REFCOUNT, 38 OCFS2_LOCK_TYPE_REFCOUNT,
37 OCFS2_LOCK_TYPE_TRIM_FS, 39 OCFS2_LOCK_TYPE_TRIM_FS,
38 OCFS2_NUM_LOCK_TYPES 40 OCFS2_NUM_LOCK_TYPES
39 }; 41 };
40 42
41 static inline char ocfs2_lock_type_char(enum o 43 static inline char ocfs2_lock_type_char(enum ocfs2_lock_type type)
42 { 44 {
43 char c; 45 char c;
44 switch (type) { 46 switch (type) {
45 case OCFS2_LOCK_TYPE_META: 47 case OCFS2_LOCK_TYPE_META:
46 c = 'M'; 48 c = 'M';
47 break; 49 break;
48 case OCFS2_LOCK_TYPE_DATA: 50 case OCFS2_LOCK_TYPE_DATA:
49 c = 'D'; 51 c = 'D';
50 break; 52 break;
51 case OCFS2_LOCK_TYPE_SUPER: 53 case OCFS2_LOCK_TYPE_SUPER:
52 c = 'S'; 54 c = 'S';
53 break; 55 break;
54 case OCFS2_LOCK_TYPE_RENAME: 56 case OCFS2_LOCK_TYPE_RENAME:
55 c = 'R'; 57 c = 'R';
56 break; 58 break;
57 case OCFS2_LOCK_TYPE_RW: 59 case OCFS2_LOCK_TYPE_RW:
58 c = 'W'; 60 c = 'W';
59 break; 61 break;
60 case OCFS2_LOCK_TYPE_DENTRY: 62 case OCFS2_LOCK_TYPE_DENTRY:
61 c = 'N'; 63 c = 'N';
62 break; 64 break;
63 case OCFS2_LOCK_TYPE_OPEN: 65 case OCFS2_LOCK_TYPE_OPEN:
64 c = 'O'; 66 c = 'O';
65 break; 67 break;
66 case OCFS2_LOCK_TYPE_FLOCK: 68 case OCFS2_LOCK_TYPE_FLOCK:
67 c = 'F'; 69 c = 'F';
68 break; 70 break;
69 case OCFS2_LOCK_TYPE_QINFO: 71 case OCFS2_LOCK_TYPE_QINFO:
70 c = 'Q'; 72 c = 'Q';
71 break; 73 break;
72 case OCFS2_LOCK_TYPE_NFS_SYNC: 74 case OCFS2_LOCK_TYPE_NFS_SYNC:
73 c = 'Y'; 75 c = 'Y';
74 break; 76 break;
75 case OCFS2_LOCK_TYPE_ORPHAN_SC 77 case OCFS2_LOCK_TYPE_ORPHAN_SCAN:
76 c = 'P'; 78 c = 'P';
77 break; 79 break;
78 case OCFS2_LOCK_TYPE_REFCOUNT: 80 case OCFS2_LOCK_TYPE_REFCOUNT:
79 c = 'T'; 81 c = 'T';
80 break; 82 break;
81 case OCFS2_LOCK_TYPE_TRIM_FS: 83 case OCFS2_LOCK_TYPE_TRIM_FS:
82 c = 'I'; 84 c = 'I';
83 break; 85 break;
84 default: 86 default:
85 c = '\0'; 87 c = '\0';
86 } 88 }
87 89
88 return c; 90 return c;
89 } 91 }
90 92
91 static char *ocfs2_lock_type_strings[] = { 93 static char *ocfs2_lock_type_strings[] = {
92 [OCFS2_LOCK_TYPE_META] = "Meta", 94 [OCFS2_LOCK_TYPE_META] = "Meta",
93 [OCFS2_LOCK_TYPE_DATA] = "Data", 95 [OCFS2_LOCK_TYPE_DATA] = "Data",
94 [OCFS2_LOCK_TYPE_SUPER] = "Super", 96 [OCFS2_LOCK_TYPE_SUPER] = "Super",
95 [OCFS2_LOCK_TYPE_RENAME] = "Rename", 97 [OCFS2_LOCK_TYPE_RENAME] = "Rename",
96 /* Need to differntiate from [R]ename. 98 /* Need to differntiate from [R]ename.. serializing writes is the
97 * important job it does, anyway. */ 99 * important job it does, anyway. */
98 [OCFS2_LOCK_TYPE_RW] = "Write/Read", 100 [OCFS2_LOCK_TYPE_RW] = "Write/Read",
99 [OCFS2_LOCK_TYPE_DENTRY] = "Dentry", 101 [OCFS2_LOCK_TYPE_DENTRY] = "Dentry",
100 [OCFS2_LOCK_TYPE_OPEN] = "Open", 102 [OCFS2_LOCK_TYPE_OPEN] = "Open",
101 [OCFS2_LOCK_TYPE_FLOCK] = "Flock", 103 [OCFS2_LOCK_TYPE_FLOCK] = "Flock",
102 [OCFS2_LOCK_TYPE_QINFO] = "Quota", 104 [OCFS2_LOCK_TYPE_QINFO] = "Quota",
103 [OCFS2_LOCK_TYPE_NFS_SYNC] = "NFSSync" 105 [OCFS2_LOCK_TYPE_NFS_SYNC] = "NFSSync",
104 [OCFS2_LOCK_TYPE_ORPHAN_SCAN] = "Orpha 106 [OCFS2_LOCK_TYPE_ORPHAN_SCAN] = "OrphanScan",
105 [OCFS2_LOCK_TYPE_REFCOUNT] = "Refcount 107 [OCFS2_LOCK_TYPE_REFCOUNT] = "Refcount",
106 [OCFS2_LOCK_TYPE_TRIM_FS] = "TrimFs", 108 [OCFS2_LOCK_TYPE_TRIM_FS] = "TrimFs",
107 }; 109 };
108 110
109 static inline const char *ocfs2_lock_type_stri 111 static inline const char *ocfs2_lock_type_string(enum ocfs2_lock_type type)
110 { 112 {
111 #ifdef __KERNEL__ 113 #ifdef __KERNEL__
112 BUG_ON(type >= OCFS2_NUM_LOCK_TYPES); 114 BUG_ON(type >= OCFS2_NUM_LOCK_TYPES);
113 #endif 115 #endif
114 return ocfs2_lock_type_strings[type]; 116 return ocfs2_lock_type_strings[type];
115 } 117 }
116 118
117 #endif /* OCFS2_LOCKID_H */ 119 #endif /* OCFS2_LOCKID_H */
118 120
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