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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_DMAPI_H__ | |
19 | #define __XFS_DMAPI_H__ | |
20 | ||
733482e4 | 21 | #include <linux/version.h> |
1da177e4 LT |
22 | /* Values used to define the on-disk version of dm_attrname_t. All |
23 | * on-disk attribute names start with the 8-byte string "SGI_DMI_". | |
24 | * | |
25 | * In the on-disk inode, DMAPI attribute names consist of the user-provided | |
26 | * name with the DMATTR_PREFIXSTRING pre-pended. This string must NEVER be | |
27 | * changed. | |
28 | */ | |
29 | ||
30 | #define DMATTR_PREFIXLEN 8 | |
31 | #define DMATTR_PREFIXSTRING "SGI_DMI_" | |
32 | ||
33 | typedef enum { | |
34 | DM_EVENT_INVALID = -1, | |
35 | DM_EVENT_CANCEL = 0, /* not supported */ | |
36 | DM_EVENT_MOUNT = 1, | |
37 | DM_EVENT_PREUNMOUNT = 2, | |
38 | DM_EVENT_UNMOUNT = 3, | |
39 | DM_EVENT_DEBUT = 4, /* not supported */ | |
40 | DM_EVENT_CREATE = 5, | |
41 | DM_EVENT_CLOSE = 6, /* not supported */ | |
42 | DM_EVENT_POSTCREATE = 7, | |
43 | DM_EVENT_REMOVE = 8, | |
44 | DM_EVENT_POSTREMOVE = 9, | |
45 | DM_EVENT_RENAME = 10, | |
46 | DM_EVENT_POSTRENAME = 11, | |
47 | DM_EVENT_LINK = 12, | |
48 | DM_EVENT_POSTLINK = 13, | |
49 | DM_EVENT_SYMLINK = 14, | |
50 | DM_EVENT_POSTSYMLINK = 15, | |
51 | DM_EVENT_READ = 16, | |
52 | DM_EVENT_WRITE = 17, | |
53 | DM_EVENT_TRUNCATE = 18, | |
54 | DM_EVENT_ATTRIBUTE = 19, | |
55 | DM_EVENT_DESTROY = 20, | |
56 | DM_EVENT_NOSPACE = 21, | |
57 | DM_EVENT_USER = 22, | |
58 | DM_EVENT_MAX = 23 | |
59 | } dm_eventtype_t; | |
60 | #define HAVE_DM_EVENTTYPE_T | |
61 | ||
62 | typedef enum { | |
63 | DM_RIGHT_NULL, | |
64 | DM_RIGHT_SHARED, | |
65 | DM_RIGHT_EXCL | |
66 | } dm_right_t; | |
67 | #define HAVE_DM_RIGHT_T | |
68 | ||
69 | /* Defines for determining if an event message should be sent. */ | |
948c6d4f | 70 | #ifdef HAVE_DMAPI |
eb9df39d | 71 | #define DM_EVENT_ENABLED(ip, event) ( \ |
bd186aa9 | 72 | unlikely ((ip)->i_mount->m_flags & XFS_MOUNT_DMAPI) && \ |
1da177e4 LT |
73 | ( ((ip)->i_d.di_dmevmask & (1 << event)) || \ |
74 | ((ip)->i_mount->m_dmevmask & (1 << event)) ) \ | |
75 | ) | |
948c6d4f ES |
76 | #else |
77 | #define DM_EVENT_ENABLED(ip, event) (0) | |
78 | #endif | |
1da177e4 | 79 | |
1da177e4 LT |
80 | #define DM_XFS_VALID_FS_EVENTS ( \ |
81 | (1 << DM_EVENT_PREUNMOUNT) | \ | |
82 | (1 << DM_EVENT_UNMOUNT) | \ | |
83 | (1 << DM_EVENT_NOSPACE) | \ | |
84 | (1 << DM_EVENT_DEBUT) | \ | |
85 | (1 << DM_EVENT_CREATE) | \ | |
86 | (1 << DM_EVENT_POSTCREATE) | \ | |
87 | (1 << DM_EVENT_REMOVE) | \ | |
88 | (1 << DM_EVENT_POSTREMOVE) | \ | |
89 | (1 << DM_EVENT_RENAME) | \ | |
90 | (1 << DM_EVENT_POSTRENAME) | \ | |
91 | (1 << DM_EVENT_LINK) | \ | |
92 | (1 << DM_EVENT_POSTLINK) | \ | |
93 | (1 << DM_EVENT_SYMLINK) | \ | |
94 | (1 << DM_EVENT_POSTSYMLINK) | \ | |
95 | (1 << DM_EVENT_ATTRIBUTE) | \ | |
96 | (1 << DM_EVENT_DESTROY) ) | |
97 | ||
98 | /* Events valid in dm_set_eventlist() when called with a file handle for | |
99 | a regular file or a symlink. These events are persistent. | |
100 | */ | |
101 | ||
102 | #define DM_XFS_VALID_FILE_EVENTS ( \ | |
103 | (1 << DM_EVENT_ATTRIBUTE) | \ | |
104 | (1 << DM_EVENT_DESTROY) ) | |
105 | ||
106 | /* Events valid in dm_set_eventlist() when called with a file handle for | |
107 | a directory. These events are persistent. | |
108 | */ | |
109 | ||
110 | #define DM_XFS_VALID_DIRECTORY_EVENTS ( \ | |
111 | (1 << DM_EVENT_CREATE) | \ | |
112 | (1 << DM_EVENT_POSTCREATE) | \ | |
113 | (1 << DM_EVENT_REMOVE) | \ | |
114 | (1 << DM_EVENT_POSTREMOVE) | \ | |
115 | (1 << DM_EVENT_RENAME) | \ | |
116 | (1 << DM_EVENT_POSTRENAME) | \ | |
117 | (1 << DM_EVENT_LINK) | \ | |
118 | (1 << DM_EVENT_POSTLINK) | \ | |
119 | (1 << DM_EVENT_SYMLINK) | \ | |
120 | (1 << DM_EVENT_POSTSYMLINK) | \ | |
121 | (1 << DM_EVENT_ATTRIBUTE) | \ | |
122 | (1 << DM_EVENT_DESTROY) ) | |
123 | ||
124 | /* Events supported by the XFS filesystem. */ | |
125 | #define DM_XFS_SUPPORTED_EVENTS ( \ | |
126 | (1 << DM_EVENT_MOUNT) | \ | |
127 | (1 << DM_EVENT_PREUNMOUNT) | \ | |
128 | (1 << DM_EVENT_UNMOUNT) | \ | |
129 | (1 << DM_EVENT_NOSPACE) | \ | |
130 | (1 << DM_EVENT_CREATE) | \ | |
131 | (1 << DM_EVENT_POSTCREATE) | \ | |
132 | (1 << DM_EVENT_REMOVE) | \ | |
133 | (1 << DM_EVENT_POSTREMOVE) | \ | |
134 | (1 << DM_EVENT_RENAME) | \ | |
135 | (1 << DM_EVENT_POSTRENAME) | \ | |
136 | (1 << DM_EVENT_LINK) | \ | |
137 | (1 << DM_EVENT_POSTLINK) | \ | |
138 | (1 << DM_EVENT_SYMLINK) | \ | |
139 | (1 << DM_EVENT_POSTSYMLINK) | \ | |
140 | (1 << DM_EVENT_READ) | \ | |
141 | (1 << DM_EVENT_WRITE) | \ | |
142 | (1 << DM_EVENT_TRUNCATE) | \ | |
143 | (1 << DM_EVENT_ATTRIBUTE) | \ | |
144 | (1 << DM_EVENT_DESTROY) ) | |
145 | ||
146 | ||
147 | /* | |
148 | * Definitions used for the flags field on dm_send_*_event(). | |
149 | */ | |
150 | ||
151 | #define DM_FLAGS_NDELAY 0x001 /* return EAGAIN after dm_pending() */ | |
152 | #define DM_FLAGS_UNWANTED 0x002 /* event not in fsys dm_eventset_t */ | |
1b1dcc1b | 153 | #define DM_FLAGS_IMUX 0x004 /* thread holds i_mutex */ |
1da177e4 LT |
154 | #define DM_FLAGS_IALLOCSEM_RD 0x010 /* thread holds i_alloc_sem rd */ |
155 | #define DM_FLAGS_IALLOCSEM_WR 0x020 /* thread holds i_alloc_sem wr */ | |
1da177e4 LT |
156 | |
157 | /* | |
050e714e | 158 | * Pull in platform specific event flags defines |
1da177e4 | 159 | */ |
050e714e | 160 | #include "xfs_dmapi_priv.h" |
e1a40fa9 | 161 | |
1da177e4 LT |
162 | /* |
163 | * Macros to turn caller specified delay/block flags into | |
164 | * dm_send_xxxx_event flag DM_FLAGS_NDELAY. | |
165 | */ | |
166 | ||
167 | #define FILP_DELAY_FLAG(filp) ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) ? \ | |
168 | DM_FLAGS_NDELAY : 0) | |
169 | #define AT_DELAY_FLAG(f) ((f&ATTR_NONBLOCK) ? DM_FLAGS_NDELAY : 0) | |
170 | ||
1da177e4 | 171 | #endif /* __XFS_DMAPI_H__ */ |