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