diff options
Diffstat (limited to '')
-rw-r--r-- | libraries/ecore/src/lib/ecore_file/ecore_file_monitor_inotify.c | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/libraries/ecore/src/lib/ecore_file/ecore_file_monitor_inotify.c b/libraries/ecore/src/lib/ecore_file/ecore_file_monitor_inotify.c new file mode 100644 index 0000000..c3533ad --- /dev/null +++ b/libraries/ecore/src/lib/ecore_file/ecore_file_monitor_inotify.c | |||
@@ -0,0 +1,369 @@ | |||
1 | #ifdef HAVE_CONFIG_H | ||
2 | # include <config.h> | ||
3 | #endif | ||
4 | |||
5 | #include <stdio.h> | ||
6 | #include <string.h> | ||
7 | #include <sys/types.h> | ||
8 | #include <unistd.h> | ||
9 | |||
10 | #include "ecore_file_private.h" | ||
11 | |||
12 | /* | ||
13 | * TODO: | ||
14 | * | ||
15 | * - Listen to these events: | ||
16 | * IN_ACCESS, IN_ATTRIB, IN_CLOSE_WRITE, IN_CLOSE_NOWRITE, IN_OPEN | ||
17 | * - Read all events first, then call the callbacks. This will prevent several | ||
18 | * callbacks with the typic save cycle (delete file, new file) | ||
19 | * - Listen to IN_IGNORED, emitted when the watch is removed | ||
20 | */ | ||
21 | |||
22 | #ifdef HAVE_INOTIFY | ||
23 | |||
24 | #ifdef HAVE_SYS_INOTIFY | ||
25 | # include <sys/inotify.h> | ||
26 | #else | ||
27 | # include <asm/unistd.h> | ||
28 | # include <linux/inotify.h> | ||
29 | #endif | ||
30 | |||
31 | #ifndef HAVE_SYS_INOTIFY | ||
32 | static inline int inotify_init(void); | ||
33 | static inline int inotify_add_watch(int fd, const char *name, __u32 mask); | ||
34 | static inline int inotify_rm_watch(int fd, __u32 wd); | ||
35 | #endif | ||
36 | |||
37 | |||
38 | typedef struct _Ecore_File_Monitor_Inotify Ecore_File_Monitor_Inotify; | ||
39 | |||
40 | #define ECORE_FILE_MONITOR_INOTIFY(x) ((Ecore_File_Monitor_Inotify *)(x)) | ||
41 | |||
42 | struct _Ecore_File_Monitor_Inotify | ||
43 | { | ||
44 | Ecore_File_Monitor monitor; | ||
45 | int wd; | ||
46 | }; | ||
47 | |||
48 | static Ecore_Fd_Handler *_fdh = NULL; | ||
49 | static Ecore_File_Monitor *_monitors = NULL; | ||
50 | static pid_t _inotify_fd_pid = -1; | ||
51 | |||
52 | static Eina_Bool _ecore_file_monitor_inotify_handler(void *data, Ecore_Fd_Handler *fdh); | ||
53 | static Ecore_File_Monitor *_ecore_file_monitor_inotify_monitor_find(int wd); | ||
54 | static void _ecore_file_monitor_inotify_events(Ecore_File_Monitor *em, char *file, int mask); | ||
55 | static int _ecore_file_monitor_inotify_monitor(Ecore_File_Monitor *em, const char *path); | ||
56 | #if 0 | ||
57 | static void _ecore_file_monitor_inotify_print(char *file, int mask); | ||
58 | #endif | ||
59 | |||
60 | int | ||
61 | ecore_file_monitor_inotify_init(void) | ||
62 | { | ||
63 | int fd; | ||
64 | |||
65 | fd = inotify_init(); | ||
66 | if (fd < 0) | ||
67 | return 0; | ||
68 | |||
69 | _fdh = ecore_main_fd_handler_add(fd, ECORE_FD_READ, _ecore_file_monitor_inotify_handler, | ||
70 | NULL, NULL, NULL); | ||
71 | if (!_fdh) | ||
72 | { | ||
73 | close(fd); | ||
74 | return 0; | ||
75 | } | ||
76 | |||
77 | _inotify_fd_pid = getpid(); | ||
78 | return 1; | ||
79 | } | ||
80 | |||
81 | int | ||
82 | ecore_file_monitor_inotify_shutdown(void) | ||
83 | { | ||
84 | int fd; | ||
85 | |||
86 | while(_monitors) | ||
87 | ecore_file_monitor_inotify_del(_monitors); | ||
88 | |||
89 | if (_fdh) | ||
90 | { | ||
91 | fd = ecore_main_fd_handler_fd_get(_fdh); | ||
92 | ecore_main_fd_handler_del(_fdh); | ||
93 | close(fd); | ||
94 | } | ||
95 | _inotify_fd_pid = -1; | ||
96 | return 1; | ||
97 | } | ||
98 | |||
99 | Ecore_File_Monitor * | ||
100 | ecore_file_monitor_inotify_add(const char *path, | ||
101 | void (*func) (void *data, Ecore_File_Monitor *em, | ||
102 | Ecore_File_Event event, | ||
103 | const char *path), | ||
104 | void *data) | ||
105 | { | ||
106 | Ecore_File_Monitor *em; | ||
107 | int len; | ||
108 | |||
109 | if (_inotify_fd_pid == -1) return NULL; | ||
110 | |||
111 | if (_inotify_fd_pid != getpid()) | ||
112 | { | ||
113 | ecore_file_monitor_inotify_shutdown(); | ||
114 | ecore_file_monitor_inotify_init(); | ||
115 | } | ||
116 | |||
117 | em = calloc(1, sizeof(Ecore_File_Monitor_Inotify)); | ||
118 | if (!em) return NULL; | ||
119 | |||
120 | em->func = func; | ||
121 | em->data = data; | ||
122 | |||
123 | em->path = strdup(path); | ||
124 | len = strlen(em->path); | ||
125 | if (em->path[len - 1] == '/' && strcmp(em->path, "/")) | ||
126 | em->path[len - 1] = 0; | ||
127 | |||
128 | _monitors = ECORE_FILE_MONITOR(eina_inlist_append(EINA_INLIST_GET(_monitors), EINA_INLIST_GET(em))); | ||
129 | |||
130 | if (ecore_file_exists(em->path)) | ||
131 | { | ||
132 | if (!_ecore_file_monitor_inotify_monitor(em, em->path)) | ||
133 | return NULL; | ||
134 | } | ||
135 | else | ||
136 | { | ||
137 | ecore_file_monitor_inotify_del(em); | ||
138 | return NULL; | ||
139 | } | ||
140 | |||
141 | return em; | ||
142 | } | ||
143 | |||
144 | void | ||
145 | ecore_file_monitor_inotify_del(Ecore_File_Monitor *em) | ||
146 | { | ||
147 | int fd; | ||
148 | |||
149 | if (_monitors) | ||
150 | _monitors = ECORE_FILE_MONITOR(eina_inlist_remove(EINA_INLIST_GET(_monitors), EINA_INLIST_GET(em))); | ||
151 | |||
152 | fd = ecore_main_fd_handler_fd_get(_fdh); | ||
153 | if (ECORE_FILE_MONITOR_INOTIFY(em)->wd) | ||
154 | inotify_rm_watch(fd, ECORE_FILE_MONITOR_INOTIFY(em)->wd); | ||
155 | free(em->path); | ||
156 | free(em); | ||
157 | } | ||
158 | |||
159 | static Eina_Bool | ||
160 | _ecore_file_monitor_inotify_handler(void *data __UNUSED__, Ecore_Fd_Handler *fdh) | ||
161 | { | ||
162 | Ecore_File_Monitor *em; | ||
163 | char buffer[16384]; | ||
164 | struct inotify_event *event; | ||
165 | int i = 0; | ||
166 | int event_size; | ||
167 | ssize_t size; | ||
168 | |||
169 | size = read(ecore_main_fd_handler_fd_get(fdh), buffer, sizeof(buffer)); | ||
170 | while (i < size) | ||
171 | { | ||
172 | event = (struct inotify_event *)&buffer[i]; | ||
173 | event_size = sizeof(struct inotify_event) + event->len; | ||
174 | i += event_size; | ||
175 | |||
176 | em = _ecore_file_monitor_inotify_monitor_find(event->wd); | ||
177 | if (!em) continue; | ||
178 | |||
179 | _ecore_file_monitor_inotify_events(em, (event->len ? event->name : NULL), event->mask); | ||
180 | } | ||
181 | |||
182 | return ECORE_CALLBACK_RENEW; | ||
183 | } | ||
184 | |||
185 | static Ecore_File_Monitor * | ||
186 | _ecore_file_monitor_inotify_monitor_find(int wd) | ||
187 | { | ||
188 | Ecore_File_Monitor *l; | ||
189 | |||
190 | EINA_INLIST_FOREACH(_monitors, l) | ||
191 | { | ||
192 | if (ECORE_FILE_MONITOR_INOTIFY(l)->wd == wd) | ||
193 | return l; | ||
194 | } | ||
195 | return NULL; | ||
196 | } | ||
197 | |||
198 | static void | ||
199 | _ecore_file_monitor_inotify_events(Ecore_File_Monitor *em, char *file, int mask) | ||
200 | { | ||
201 | char buf[PATH_MAX]; | ||
202 | int isdir; | ||
203 | |||
204 | if ((file) && (file[0])) | ||
205 | snprintf(buf, sizeof(buf), "%s/%s", em->path, file); | ||
206 | else | ||
207 | strcpy(buf, em->path); | ||
208 | isdir = mask & IN_ISDIR; | ||
209 | |||
210 | #if 0 | ||
211 | _ecore_file_monitor_inotify_print(buf, mask); | ||
212 | #endif | ||
213 | |||
214 | if (mask & IN_ATTRIB) | ||
215 | { | ||
216 | em->func(em->data, em, ECORE_FILE_EVENT_MODIFIED, buf); | ||
217 | } | ||
218 | if (mask & IN_CLOSE_WRITE) | ||
219 | { | ||
220 | if (!isdir) | ||
221 | em->func(em->data, em, ECORE_FILE_EVENT_CLOSED, buf); | ||
222 | } | ||
223 | if (mask & IN_MODIFY) | ||
224 | { | ||
225 | if (!isdir) | ||
226 | em->func(em->data, em, ECORE_FILE_EVENT_MODIFIED, buf); | ||
227 | } | ||
228 | if (mask & IN_MOVED_FROM) | ||
229 | { | ||
230 | if (isdir) | ||
231 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_DIRECTORY, buf); | ||
232 | else | ||
233 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_FILE, buf); | ||
234 | } | ||
235 | if (mask & IN_MOVED_TO) | ||
236 | { | ||
237 | if (isdir) | ||
238 | em->func(em->data, em, ECORE_FILE_EVENT_CREATED_DIRECTORY, buf); | ||
239 | else | ||
240 | em->func(em->data, em, ECORE_FILE_EVENT_CREATED_FILE, buf); | ||
241 | } | ||
242 | if (mask & IN_DELETE) | ||
243 | { | ||
244 | if (isdir) | ||
245 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_DIRECTORY, buf); | ||
246 | else | ||
247 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_FILE, buf); | ||
248 | } | ||
249 | if (mask & IN_CREATE) | ||
250 | { | ||
251 | if (isdir) | ||
252 | em->func(em->data, em, ECORE_FILE_EVENT_CREATED_DIRECTORY, buf); | ||
253 | else | ||
254 | em->func(em->data, em, ECORE_FILE_EVENT_CREATED_FILE, buf); | ||
255 | } | ||
256 | if (mask & IN_DELETE_SELF) | ||
257 | { | ||
258 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path); | ||
259 | } | ||
260 | if (mask & IN_MOVE_SELF) | ||
261 | { | ||
262 | /* We just call delete. The dir is gone... */ | ||
263 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path); | ||
264 | } | ||
265 | if (mask & IN_UNMOUNT) | ||
266 | { | ||
267 | /* We just call delete. The dir is gone... */ | ||
268 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path); | ||
269 | } | ||
270 | if (mask & IN_IGNORED) | ||
271 | { | ||
272 | /* The watch is removed. If the file name still exists monitor the new one, | ||
273 | * else delete it */ | ||
274 | if (ecore_file_exists(em->path)) | ||
275 | { | ||
276 | if (!_ecore_file_monitor_inotify_monitor(em, em->path)) | ||
277 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path); | ||
278 | } | ||
279 | else | ||
280 | em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path); | ||
281 | } | ||
282 | } | ||
283 | |||
284 | static int | ||
285 | _ecore_file_monitor_inotify_monitor(Ecore_File_Monitor *em, const char *path) | ||
286 | { | ||
287 | int mask = | ||
288 | IN_ATTRIB | | ||
289 | IN_CLOSE_WRITE | | ||
290 | IN_MOVED_FROM | | ||
291 | IN_MOVED_TO | | ||
292 | IN_DELETE | | ||
293 | IN_CREATE | | ||
294 | IN_MODIFY | | ||
295 | IN_DELETE_SELF | | ||
296 | IN_MOVE_SELF | | ||
297 | IN_UNMOUNT; | ||
298 | |||
299 | ECORE_FILE_MONITOR_INOTIFY(em)->wd = | ||
300 | inotify_add_watch(ecore_main_fd_handler_fd_get(_fdh), path, mask); | ||
301 | if (ECORE_FILE_MONITOR_INOTIFY(em)->wd < 0) | ||
302 | { | ||
303 | ERR("inotify_add_watch error"); | ||
304 | ecore_file_monitor_inotify_del(em); | ||
305 | return 0; | ||
306 | } | ||
307 | return 1; | ||
308 | } | ||
309 | |||
310 | #ifndef HAVE_SYS_INOTIFY | ||
311 | static inline int | ||
312 | inotify_init(void) | ||
313 | { | ||
314 | return syscall(__NR_inotify_init); | ||
315 | } | ||
316 | |||
317 | static inline int | ||
318 | inotify_add_watch(int fd, const char *name, __u32 mask) | ||
319 | { | ||
320 | return syscall(__NR_inotify_add_watch, fd, name, mask); | ||
321 | } | ||
322 | |||
323 | static inline int | ||
324 | inotify_rm_watch(int fd, __u32 wd) | ||
325 | { | ||
326 | return syscall(__NR_inotify_rm_watch, fd, wd); | ||
327 | } | ||
328 | #endif | ||
329 | |||
330 | #if 0 | ||
331 | static void | ||
332 | _ecore_file_monitor_inotify_print(char *file, int mask) | ||
333 | { | ||
334 | const char *type; | ||
335 | |||
336 | if (mask & IN_ISDIR) | ||
337 | type = "dir"; | ||
338 | else | ||
339 | type = "file"; | ||
340 | |||
341 | if (mask & IN_ACCESS) | ||
342 | INF("Inotify accessed %s: %s", type, file); | ||
343 | if (mask & IN_MODIFY) | ||
344 | INF("Inotify modified %s: %s", type, file); | ||
345 | if (mask & IN_ATTRIB) | ||
346 | INF("Inotify attributes %s: %s", type, file); | ||
347 | if (mask & IN_CLOSE_WRITE) | ||
348 | INF("Inotify close write %s: %s", type, file); | ||
349 | if (mask & IN_CLOSE_NOWRITE) | ||
350 | INF("Inotify close write %s: %s", type, file); | ||
351 | if (mask & IN_OPEN) | ||
352 | INF("Inotify open %s: %s", type, file); | ||
353 | if (mask & IN_MOVED_FROM) | ||
354 | INF("Inotify moved from %s: %s", type, file); | ||
355 | if (mask & IN_MOVED_TO) | ||
356 | INF("Inotify moved to %s: %s", type, file); | ||
357 | if (mask & IN_DELETE) | ||
358 | INF("Inotify delete %s: %s", type, file); | ||
359 | if (mask & IN_CREATE) | ||
360 | INF("Inotify create %s: %s", type, file); | ||
361 | if (mask & IN_DELETE_SELF) | ||
362 | INF("Inotify delete self %s: %s", type, file); | ||
363 | if (mask & IN_MOVE_SELF) | ||
364 | INF("Inotify move self %s: %s", type, file); | ||
365 | if (mask & IN_UNMOUNT) | ||
366 | INF("Inotify unmount %s: %s", type, file); | ||
367 | } | ||
368 | #endif | ||
369 | #endif /* HAVE_INOTIFY */ | ||