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-rw-r--r--include/linux/fsnotify.h166
1 files changed, 83 insertions, 83 deletions
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index 01755909ce81..59d0df43ff9d 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -11,8 +11,6 @@
11 * (C) Copyright 2005 Robert Love 11 * (C) Copyright 2005 Robert Love
12 */ 12 */
13 13
14#include <linux/dnotify.h>
15#include <linux/inotify.h>
16#include <linux/fsnotify_backend.h> 14#include <linux/fsnotify_backend.h>
17#include <linux/audit.h> 15#include <linux/audit.h>
18#include <linux/slab.h> 16#include <linux/slab.h>
@@ -21,35 +19,53 @@
21 * fsnotify_d_instantiate - instantiate a dentry for inode 19 * fsnotify_d_instantiate - instantiate a dentry for inode
22 * Called with dcache_lock held. 20 * Called with dcache_lock held.
23 */ 21 */
24static inline void fsnotify_d_instantiate(struct dentry *entry, 22static inline void fsnotify_d_instantiate(struct dentry *dentry,
25 struct inode *inode) 23 struct inode *inode)
26{ 24{
27 __fsnotify_d_instantiate(entry, inode); 25 __fsnotify_d_instantiate(dentry, inode);
28
29 inotify_d_instantiate(entry, inode);
30} 26}
31 27
32/* Notify this dentry's parent about a child's events. */ 28/* Notify this dentry's parent about a child's events. */
33static inline void fsnotify_parent(struct dentry *dentry, __u32 mask) 29static inline void fsnotify_parent(struct path *path, struct dentry *dentry, __u32 mask)
34{ 30{
35 __fsnotify_parent(dentry, mask); 31 if (!dentry)
32 dentry = path->dentry;
33
34 __fsnotify_parent(path, dentry, mask);
35}
36 36
37 inotify_dentry_parent_queue_event(dentry, mask, 0, dentry->d_name.name); 37/* simple call site for access decisions */
38static inline int fsnotify_perm(struct file *file, int mask)
39{
40 struct path *path = &file->f_path;
41 struct inode *inode = path->dentry->d_inode;
42 __u32 fsnotify_mask = 0;
43
44 if (file->f_mode & FMODE_NONOTIFY)
45 return 0;
46 if (!(mask & (MAY_READ | MAY_OPEN)))
47 return 0;
48 if (mask & MAY_OPEN)
49 fsnotify_mask = FS_OPEN_PERM;
50 else if (mask & MAY_READ)
51 fsnotify_mask = FS_ACCESS_PERM;
52 else
53 BUG();
54
55 return fsnotify(inode, fsnotify_mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
38} 56}
39 57
40/* 58/*
41 * fsnotify_d_move - entry has been moved 59 * fsnotify_d_move - dentry has been moved
42 * Called with dcache_lock and entry->d_lock held. 60 * Called with dcache_lock and dentry->d_lock held.
43 */ 61 */
44static inline void fsnotify_d_move(struct dentry *entry) 62static inline void fsnotify_d_move(struct dentry *dentry)
45{ 63{
46 /* 64 /*
47 * On move we need to update entry->d_flags to indicate if the new parent 65 * On move we need to update dentry->d_flags to indicate if the new parent
48 * cares about events from this entry. 66 * cares about events from this dentry.
49 */ 67 */
50 __fsnotify_update_dcache_flags(entry); 68 __fsnotify_update_dcache_flags(dentry);
51
52 inotify_d_move(entry);
53} 69}
54 70
55/* 71/*
@@ -57,8 +73,6 @@ static inline void fsnotify_d_move(struct dentry *entry)
57 */ 73 */
58static inline void fsnotify_link_count(struct inode *inode) 74static inline void fsnotify_link_count(struct inode *inode)
59{ 75{
60 inotify_inode_queue_event(inode, IN_ATTRIB, 0, NULL, NULL);
61
62 fsnotify(inode, FS_ATTRIB, inode, FSNOTIFY_EVENT_INODE, NULL, 0); 76 fsnotify(inode, FS_ATTRIB, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
63} 77}
64 78
@@ -66,45 +80,31 @@ static inline void fsnotify_link_count(struct inode *inode)
66 * fsnotify_move - file old_name at old_dir was moved to new_name at new_dir 80 * fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
67 */ 81 */
68static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir, 82static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
69 const char *old_name, 83 const unsigned char *old_name,
70 int isdir, struct inode *target, struct dentry *moved) 84 int isdir, struct inode *target, struct dentry *moved)
71{ 85{
72 struct inode *source = moved->d_inode; 86 struct inode *source = moved->d_inode;
73 u32 in_cookie = inotify_get_cookie();
74 u32 fs_cookie = fsnotify_get_cookie(); 87 u32 fs_cookie = fsnotify_get_cookie();
75 __u32 old_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_FROM); 88 __u32 old_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_FROM);
76 __u32 new_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_TO); 89 __u32 new_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_TO);
77 const char *new_name = moved->d_name.name; 90 const unsigned char *new_name = moved->d_name.name;
78 91
79 if (old_dir == new_dir) 92 if (old_dir == new_dir)
80 old_dir_mask |= FS_DN_RENAME; 93 old_dir_mask |= FS_DN_RENAME;
81 94
82 if (isdir) { 95 if (isdir) {
83 isdir = IN_ISDIR;
84 old_dir_mask |= FS_IN_ISDIR; 96 old_dir_mask |= FS_IN_ISDIR;
85 new_dir_mask |= FS_IN_ISDIR; 97 new_dir_mask |= FS_IN_ISDIR;
86 } 98 }
87 99
88 inotify_inode_queue_event(old_dir, IN_MOVED_FROM|isdir, in_cookie, old_name,
89 source);
90 inotify_inode_queue_event(new_dir, IN_MOVED_TO|isdir, in_cookie, new_name,
91 source);
92
93 fsnotify(old_dir, old_dir_mask, old_dir, FSNOTIFY_EVENT_INODE, old_name, fs_cookie); 100 fsnotify(old_dir, old_dir_mask, old_dir, FSNOTIFY_EVENT_INODE, old_name, fs_cookie);
94 fsnotify(new_dir, new_dir_mask, new_dir, FSNOTIFY_EVENT_INODE, new_name, fs_cookie); 101 fsnotify(new_dir, new_dir_mask, new_dir, FSNOTIFY_EVENT_INODE, new_name, fs_cookie);
95 102
96 if (target) { 103 if (target)
97 inotify_inode_queue_event(target, IN_DELETE_SELF, 0, NULL, NULL);
98 inotify_inode_is_dead(target);
99
100 /* this is really a link_count change not a removal */
101 fsnotify_link_count(target); 104 fsnotify_link_count(target);
102 }
103 105
104 if (source) { 106 if (source)
105 inotify_inode_queue_event(source, IN_MOVE_SELF, 0, NULL, NULL);
106 fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0); 107 fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
107 }
108 audit_inode_child(moved, new_dir); 108 audit_inode_child(moved, new_dir);
109} 109}
110 110
@@ -117,6 +117,14 @@ static inline void fsnotify_inode_delete(struct inode *inode)
117} 117}
118 118
119/* 119/*
120 * fsnotify_vfsmount_delete - a vfsmount is being destroyed, clean up is needed
121 */
122static inline void fsnotify_vfsmount_delete(struct vfsmount *mnt)
123{
124 __fsnotify_vfsmount_delete(mnt);
125}
126
127/*
120 * fsnotify_nameremove - a filename was removed from a directory 128 * fsnotify_nameremove - a filename was removed from a directory
121 */ 129 */
122static inline void fsnotify_nameremove(struct dentry *dentry, int isdir) 130static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
@@ -126,7 +134,7 @@ static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
126 if (isdir) 134 if (isdir)
127 mask |= FS_IN_ISDIR; 135 mask |= FS_IN_ISDIR;
128 136
129 fsnotify_parent(dentry, mask); 137 fsnotify_parent(NULL, dentry, mask);
130} 138}
131 139
132/* 140/*
@@ -134,9 +142,6 @@ static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
134 */ 142 */
135static inline void fsnotify_inoderemove(struct inode *inode) 143static inline void fsnotify_inoderemove(struct inode *inode)
136{ 144{
137 inotify_inode_queue_event(inode, IN_DELETE_SELF, 0, NULL, NULL);
138 inotify_inode_is_dead(inode);
139
140 fsnotify(inode, FS_DELETE_SELF, inode, FSNOTIFY_EVENT_INODE, NULL, 0); 145 fsnotify(inode, FS_DELETE_SELF, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
141 __fsnotify_inode_delete(inode); 146 __fsnotify_inode_delete(inode);
142} 147}
@@ -146,8 +151,6 @@ static inline void fsnotify_inoderemove(struct inode *inode)
146 */ 151 */
147static inline void fsnotify_create(struct inode *inode, struct dentry *dentry) 152static inline void fsnotify_create(struct inode *inode, struct dentry *dentry)
148{ 153{
149 inotify_inode_queue_event(inode, IN_CREATE, 0, dentry->d_name.name,
150 dentry->d_inode);
151 audit_inode_child(dentry, inode); 154 audit_inode_child(dentry, inode);
152 155
153 fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0); 156 fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
@@ -160,8 +163,6 @@ static inline void fsnotify_create(struct inode *inode, struct dentry *dentry)
160 */ 163 */
161static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct dentry *new_dentry) 164static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct dentry *new_dentry)
162{ 165{
163 inotify_inode_queue_event(dir, IN_CREATE, 0, new_dentry->d_name.name,
164 inode);
165 fsnotify_link_count(inode); 166 fsnotify_link_count(inode);
166 audit_inode_child(new_dentry, dir); 167 audit_inode_child(new_dentry, dir);
167 168
@@ -176,7 +177,6 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
176 __u32 mask = (FS_CREATE | FS_IN_ISDIR); 177 __u32 mask = (FS_CREATE | FS_IN_ISDIR);
177 struct inode *d_inode = dentry->d_inode; 178 struct inode *d_inode = dentry->d_inode;
178 179
179 inotify_inode_queue_event(inode, mask, 0, dentry->d_name.name, d_inode);
180 audit_inode_child(dentry, inode); 180 audit_inode_child(dentry, inode);
181 181
182 fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0); 182 fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
@@ -185,52 +185,55 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
185/* 185/*
186 * fsnotify_access - file was read 186 * fsnotify_access - file was read
187 */ 187 */
188static inline void fsnotify_access(struct dentry *dentry) 188static inline void fsnotify_access(struct file *file)
189{ 189{
190 struct inode *inode = dentry->d_inode; 190 struct path *path = &file->f_path;
191 struct inode *inode = path->dentry->d_inode;
191 __u32 mask = FS_ACCESS; 192 __u32 mask = FS_ACCESS;
192 193
193 if (S_ISDIR(inode->i_mode)) 194 if (S_ISDIR(inode->i_mode))
194 mask |= FS_IN_ISDIR; 195 mask |= FS_IN_ISDIR;
195 196
196 inotify_inode_queue_event(inode, mask, 0, NULL, NULL); 197 if (!(file->f_mode & FMODE_NONOTIFY)) {
197 198 fsnotify_parent(path, NULL, mask);
198 fsnotify_parent(dentry, mask); 199 fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
199 fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0); 200 }
200} 201}
201 202
202/* 203/*
203 * fsnotify_modify - file was modified 204 * fsnotify_modify - file was modified
204 */ 205 */
205static inline void fsnotify_modify(struct dentry *dentry) 206static inline void fsnotify_modify(struct file *file)
206{ 207{
207 struct inode *inode = dentry->d_inode; 208 struct path *path = &file->f_path;
209 struct inode *inode = path->dentry->d_inode;
208 __u32 mask = FS_MODIFY; 210 __u32 mask = FS_MODIFY;
209 211
210 if (S_ISDIR(inode->i_mode)) 212 if (S_ISDIR(inode->i_mode))
211 mask |= FS_IN_ISDIR; 213 mask |= FS_IN_ISDIR;
212 214
213 inotify_inode_queue_event(inode, mask, 0, NULL, NULL); 215 if (!(file->f_mode & FMODE_NONOTIFY)) {
214 216 fsnotify_parent(path, NULL, mask);
215 fsnotify_parent(dentry, mask); 217 fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
216 fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0); 218 }
217} 219}
218 220
219/* 221/*
220 * fsnotify_open - file was opened 222 * fsnotify_open - file was opened
221 */ 223 */
222static inline void fsnotify_open(struct dentry *dentry) 224static inline void fsnotify_open(struct file *file)
223{ 225{
224 struct inode *inode = dentry->d_inode; 226 struct path *path = &file->f_path;
227 struct inode *inode = path->dentry->d_inode;
225 __u32 mask = FS_OPEN; 228 __u32 mask = FS_OPEN;
226 229
227 if (S_ISDIR(inode->i_mode)) 230 if (S_ISDIR(inode->i_mode))
228 mask |= FS_IN_ISDIR; 231 mask |= FS_IN_ISDIR;
229 232
230 inotify_inode_queue_event(inode, mask, 0, NULL, NULL); 233 if (!(file->f_mode & FMODE_NONOTIFY)) {
231 234 fsnotify_parent(path, NULL, mask);
232 fsnotify_parent(dentry, mask); 235 fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
233 fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0); 236 }
234} 237}
235 238
236/* 239/*
@@ -238,18 +241,18 @@ static inline void fsnotify_open(struct dentry *dentry)
238 */ 241 */
239static inline void fsnotify_close(struct file *file) 242static inline void fsnotify_close(struct file *file)
240{ 243{
241 struct dentry *dentry = file->f_path.dentry; 244 struct path *path = &file->f_path;
242 struct inode *inode = dentry->d_inode; 245 struct inode *inode = file->f_path.dentry->d_inode;
243 fmode_t mode = file->f_mode; 246 fmode_t mode = file->f_mode;
244 __u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE; 247 __u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
245 248
246 if (S_ISDIR(inode->i_mode)) 249 if (S_ISDIR(inode->i_mode))
247 mask |= FS_IN_ISDIR; 250 mask |= FS_IN_ISDIR;
248 251
249 inotify_inode_queue_event(inode, mask, 0, NULL, NULL); 252 if (!(file->f_mode & FMODE_NONOTIFY)) {
250 253 fsnotify_parent(path, NULL, mask);
251 fsnotify_parent(dentry, mask); 254 fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
252 fsnotify(inode, mask, file, FSNOTIFY_EVENT_FILE, NULL, 0); 255 }
253} 256}
254 257
255/* 258/*
@@ -263,9 +266,7 @@ static inline void fsnotify_xattr(struct dentry *dentry)
263 if (S_ISDIR(inode->i_mode)) 266 if (S_ISDIR(inode->i_mode))
264 mask |= FS_IN_ISDIR; 267 mask |= FS_IN_ISDIR;
265 268
266 inotify_inode_queue_event(inode, mask, 0, NULL, NULL); 269 fsnotify_parent(NULL, dentry, mask);
267
268 fsnotify_parent(dentry, mask);
269 fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0); 270 fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
270} 271}
271 272
@@ -299,19 +300,18 @@ static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
299 if (mask) { 300 if (mask) {
300 if (S_ISDIR(inode->i_mode)) 301 if (S_ISDIR(inode->i_mode))
301 mask |= FS_IN_ISDIR; 302 mask |= FS_IN_ISDIR;
302 inotify_inode_queue_event(inode, mask, 0, NULL, NULL);
303 303
304 fsnotify_parent(dentry, mask); 304 fsnotify_parent(NULL, dentry, mask);
305 fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0); 305 fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
306 } 306 }
307} 307}
308 308
309#if defined(CONFIG_INOTIFY) || defined(CONFIG_FSNOTIFY) /* notify helpers */ 309#if defined(CONFIG_FSNOTIFY) /* notify helpers */
310 310
311/* 311/*
312 * fsnotify_oldname_init - save off the old filename before we change it 312 * fsnotify_oldname_init - save off the old filename before we change it
313 */ 313 */
314static inline const char *fsnotify_oldname_init(const char *name) 314static inline const unsigned char *fsnotify_oldname_init(const unsigned char *name)
315{ 315{
316 return kstrdup(name, GFP_KERNEL); 316 return kstrdup(name, GFP_KERNEL);
317} 317}
@@ -319,22 +319,22 @@ static inline const char *fsnotify_oldname_init(const char *name)
319/* 319/*
320 * fsnotify_oldname_free - free the name we got from fsnotify_oldname_init 320 * fsnotify_oldname_free - free the name we got from fsnotify_oldname_init
321 */ 321 */
322static inline void fsnotify_oldname_free(const char *old_name) 322static inline void fsnotify_oldname_free(const unsigned char *old_name)
323{ 323{
324 kfree(old_name); 324 kfree(old_name);
325} 325}
326 326
327#else /* CONFIG_INOTIFY || CONFIG_FSNOTIFY */ 327#else /* CONFIG_FSNOTIFY */
328 328
329static inline const char *fsnotify_oldname_init(const char *name) 329static inline const char *fsnotify_oldname_init(const unsigned char *name)
330{ 330{
331 return NULL; 331 return NULL;
332} 332}
333 333
334static inline void fsnotify_oldname_free(const char *old_name) 334static inline void fsnotify_oldname_free(const unsigned char *old_name)
335{ 335{
336} 336}
337 337
338#endif /* ! CONFIG_INOTIFY */ 338#endif /* CONFIG_FSNOTIFY */
339 339
340#endif /* _LINUX_FS_NOTIFY_H */ 340#endif /* _LINUX_FS_NOTIFY_H */