1 /* SPDX-License-Identifier: GPL-2.0-or-later * !! 1 /* -*- mode: c; c-basic-offset: 8; -*-
2 /* !! 2 * vim: noexpandtab sw=8 ts=8 sts=0:
>> 3 *
3 * ocfs2_lockid.h 4 * ocfs2_lockid.h
4 * 5 *
5 * Defines OCFS2 lockid bits. 6 * Defines OCFS2 lockid bits.
6 * 7 *
7 * Copyright (C) 2002, 2005 Oracle. All right 8 * Copyright (C) 2002, 2005 Oracle. All rights reserved.
>> 9 *
>> 10 * This program is free software; you can redistribute it and/or
>> 11 * modify it under the terms of the GNU General Public
>> 12 * License as published by the Free Software Foundation; either
>> 13 * version 2 of the License, or (at your option) any later version.
>> 14 *
>> 15 * This program is distributed in the hope that it will be useful,
>> 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
>> 18 * General Public License for more details.
>> 19 *
>> 20 * You should have received a copy of the GNU General Public
>> 21 * License along with this program; if not, write to the
>> 22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
>> 23 * Boston, MA 021110-1307, USA.
8 */ 24 */
9 25
10 #ifndef OCFS2_LOCKID_H 26 #ifndef OCFS2_LOCKID_H
11 #define OCFS2_LOCKID_H 27 #define OCFS2_LOCKID_H
12 28
13 /* lock ids are made up in the following manne 29 /* lock ids are made up in the following manner:
14 * name[0] --> type 30 * name[0] --> type
15 * name[1-6] --> 6 pad characters, reserved 31 * name[1-6] --> 6 pad characters, reserved for now
16 * name[7-22] --> block number, expressed in 32 * name[7-22] --> block number, expressed in hex as 16 chars
17 * name[23-30] --> i_generation, expressed in 33 * name[23-30] --> i_generation, expressed in hex 8 chars
18 * name[31] --> '\0' */ 34 * name[31] --> '\0' */
19 #define OCFS2_LOCK_ID_MAX_LEN 32 35 #define OCFS2_LOCK_ID_MAX_LEN 32
20 #define OCFS2_LOCK_ID_PAD "000000" 36 #define OCFS2_LOCK_ID_PAD "000000"
21 37
22 #define OCFS2_DENTRY_LOCK_INO_START 18 38 #define OCFS2_DENTRY_LOCK_INO_START 18
23 39
24 enum ocfs2_lock_type { 40 enum ocfs2_lock_type {
25 OCFS2_LOCK_TYPE_META = 0, 41 OCFS2_LOCK_TYPE_META = 0,
26 OCFS2_LOCK_TYPE_DATA, 42 OCFS2_LOCK_TYPE_DATA,
27 OCFS2_LOCK_TYPE_SUPER, 43 OCFS2_LOCK_TYPE_SUPER,
28 OCFS2_LOCK_TYPE_RENAME, 44 OCFS2_LOCK_TYPE_RENAME,
29 OCFS2_LOCK_TYPE_RW, 45 OCFS2_LOCK_TYPE_RW,
30 OCFS2_LOCK_TYPE_DENTRY, 46 OCFS2_LOCK_TYPE_DENTRY,
31 OCFS2_LOCK_TYPE_OPEN, 47 OCFS2_LOCK_TYPE_OPEN,
32 OCFS2_LOCK_TYPE_FLOCK, 48 OCFS2_LOCK_TYPE_FLOCK,
33 OCFS2_LOCK_TYPE_QINFO, 49 OCFS2_LOCK_TYPE_QINFO,
34 OCFS2_LOCK_TYPE_NFS_SYNC, 50 OCFS2_LOCK_TYPE_NFS_SYNC,
35 OCFS2_LOCK_TYPE_ORPHAN_SCAN, 51 OCFS2_LOCK_TYPE_ORPHAN_SCAN,
36 OCFS2_LOCK_TYPE_REFCOUNT, 52 OCFS2_LOCK_TYPE_REFCOUNT,
37 OCFS2_LOCK_TYPE_TRIM_FS, 53 OCFS2_LOCK_TYPE_TRIM_FS,
38 OCFS2_NUM_LOCK_TYPES 54 OCFS2_NUM_LOCK_TYPES
39 }; 55 };
40 56
41 static inline char ocfs2_lock_type_char(enum o 57 static inline char ocfs2_lock_type_char(enum ocfs2_lock_type type)
42 { 58 {
43 char c; 59 char c;
44 switch (type) { 60 switch (type) {
45 case OCFS2_LOCK_TYPE_META: 61 case OCFS2_LOCK_TYPE_META:
46 c = 'M'; 62 c = 'M';
47 break; 63 break;
48 case OCFS2_LOCK_TYPE_DATA: 64 case OCFS2_LOCK_TYPE_DATA:
49 c = 'D'; 65 c = 'D';
50 break; 66 break;
51 case OCFS2_LOCK_TYPE_SUPER: 67 case OCFS2_LOCK_TYPE_SUPER:
52 c = 'S'; 68 c = 'S';
53 break; 69 break;
54 case OCFS2_LOCK_TYPE_RENAME: 70 case OCFS2_LOCK_TYPE_RENAME:
55 c = 'R'; 71 c = 'R';
56 break; 72 break;
57 case OCFS2_LOCK_TYPE_RW: 73 case OCFS2_LOCK_TYPE_RW:
58 c = 'W'; 74 c = 'W';
59 break; 75 break;
60 case OCFS2_LOCK_TYPE_DENTRY: 76 case OCFS2_LOCK_TYPE_DENTRY:
61 c = 'N'; 77 c = 'N';
62 break; 78 break;
63 case OCFS2_LOCK_TYPE_OPEN: 79 case OCFS2_LOCK_TYPE_OPEN:
64 c = 'O'; 80 c = 'O';
65 break; 81 break;
66 case OCFS2_LOCK_TYPE_FLOCK: 82 case OCFS2_LOCK_TYPE_FLOCK:
67 c = 'F'; 83 c = 'F';
68 break; 84 break;
69 case OCFS2_LOCK_TYPE_QINFO: 85 case OCFS2_LOCK_TYPE_QINFO:
70 c = 'Q'; 86 c = 'Q';
71 break; 87 break;
72 case OCFS2_LOCK_TYPE_NFS_SYNC: 88 case OCFS2_LOCK_TYPE_NFS_SYNC:
73 c = 'Y'; 89 c = 'Y';
74 break; 90 break;
75 case OCFS2_LOCK_TYPE_ORPHAN_SC 91 case OCFS2_LOCK_TYPE_ORPHAN_SCAN:
76 c = 'P'; 92 c = 'P';
77 break; 93 break;
78 case OCFS2_LOCK_TYPE_REFCOUNT: 94 case OCFS2_LOCK_TYPE_REFCOUNT:
79 c = 'T'; 95 c = 'T';
80 break; 96 break;
81 case OCFS2_LOCK_TYPE_TRIM_FS: 97 case OCFS2_LOCK_TYPE_TRIM_FS:
82 c = 'I'; 98 c = 'I';
83 break; 99 break;
84 default: 100 default:
85 c = '\0'; 101 c = '\0';
86 } 102 }
87 103
88 return c; 104 return c;
89 } 105 }
90 106
91 static char *ocfs2_lock_type_strings[] = { 107 static char *ocfs2_lock_type_strings[] = {
92 [OCFS2_LOCK_TYPE_META] = "Meta", 108 [OCFS2_LOCK_TYPE_META] = "Meta",
93 [OCFS2_LOCK_TYPE_DATA] = "Data", 109 [OCFS2_LOCK_TYPE_DATA] = "Data",
94 [OCFS2_LOCK_TYPE_SUPER] = "Super", 110 [OCFS2_LOCK_TYPE_SUPER] = "Super",
95 [OCFS2_LOCK_TYPE_RENAME] = "Rename", 111 [OCFS2_LOCK_TYPE_RENAME] = "Rename",
96 /* Need to differntiate from [R]ename. 112 /* Need to differntiate from [R]ename.. serializing writes is the
97 * important job it does, anyway. */ 113 * important job it does, anyway. */
98 [OCFS2_LOCK_TYPE_RW] = "Write/Read", 114 [OCFS2_LOCK_TYPE_RW] = "Write/Read",
99 [OCFS2_LOCK_TYPE_DENTRY] = "Dentry", 115 [OCFS2_LOCK_TYPE_DENTRY] = "Dentry",
100 [OCFS2_LOCK_TYPE_OPEN] = "Open", 116 [OCFS2_LOCK_TYPE_OPEN] = "Open",
101 [OCFS2_LOCK_TYPE_FLOCK] = "Flock", 117 [OCFS2_LOCK_TYPE_FLOCK] = "Flock",
102 [OCFS2_LOCK_TYPE_QINFO] = "Quota", 118 [OCFS2_LOCK_TYPE_QINFO] = "Quota",
103 [OCFS2_LOCK_TYPE_NFS_SYNC] = "NFSSync" 119 [OCFS2_LOCK_TYPE_NFS_SYNC] = "NFSSync",
104 [OCFS2_LOCK_TYPE_ORPHAN_SCAN] = "Orpha 120 [OCFS2_LOCK_TYPE_ORPHAN_SCAN] = "OrphanScan",
105 [OCFS2_LOCK_TYPE_REFCOUNT] = "Refcount 121 [OCFS2_LOCK_TYPE_REFCOUNT] = "Refcount",
106 [OCFS2_LOCK_TYPE_TRIM_FS] = "TrimFs", 122 [OCFS2_LOCK_TYPE_TRIM_FS] = "TrimFs",
107 }; 123 };
108 124
109 static inline const char *ocfs2_lock_type_stri 125 static inline const char *ocfs2_lock_type_string(enum ocfs2_lock_type type)
110 { 126 {
111 #ifdef __KERNEL__ 127 #ifdef __KERNEL__
112 BUG_ON(type >= OCFS2_NUM_LOCK_TYPES); 128 BUG_ON(type >= OCFS2_NUM_LOCK_TYPES);
113 #endif 129 #endif
114 return ocfs2_lock_type_strings[type]; 130 return ocfs2_lock_type_strings[type];
115 } 131 }
116 132
117 #endif /* OCFS2_LOCKID_H */ 133 #endif /* OCFS2_LOCKID_H */
118 134
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