1 /* SPDX-License-Identifier: CC0-1.0 */
2
3 #include <stdio.h>
4 #include <string.h>
5 #include <sys/inotify.h>
6
7 #include <systemd/sd-event.h>
8
9 #define _cleanup_(f) __attribute__((cleanup(f)))
10
inotify_handler(sd_event_source * source,const struct inotify_event * event,void * userdata)11 static int inotify_handler(sd_event_source *source,
12 const struct inotify_event *event,
13 void *userdata) {
14
15 const char *desc = NULL;
16
17 sd_event_source_get_description(source, &desc);
18
19 if (event->mask & IN_Q_OVERFLOW)
20 printf("inotify-handler <%s>: overflow\n", desc);
21 else if (event->mask & IN_CREATE)
22 printf("inotify-handler <%s>: create on %s\n", desc, event->name);
23 else if (event->mask & IN_DELETE)
24 printf("inotify-handler <%s>: delete on %s\n", desc, event->name);
25 else if (event->mask & IN_MOVED_TO)
26 printf("inotify-handler <%s>: moved-to on %s\n", desc, event->name);
27
28 /* Terminate the program if an "exit" file appears */
29 if ((event->mask & (IN_CREATE|IN_MOVED_TO)) &&
30 strcmp(event->name, "exit") == 0)
31 sd_event_exit(sd_event_source_get_event(source), 0);
32
33 return 1;
34 }
35
main(int argc,char ** argv)36 int main(int argc, char **argv) {
37 _cleanup_(sd_event_unrefp) sd_event *event = NULL;
38 _cleanup_(sd_event_source_unrefp) sd_event_source *source1 = NULL, *source2 = NULL;
39
40 const char *path1 = argc > 1 ? argv[1] : "/tmp";
41 const char *path2 = argc > 2 ? argv[2] : NULL;
42
43 /* Note: failure handling is omitted for brevity */
44
45 sd_event_default(&event);
46
47 sd_event_add_inotify(event, &source1, path1,
48 IN_CREATE | IN_DELETE | IN_MODIFY | IN_MOVED_TO,
49 inotify_handler, NULL);
50 if (path2)
51 sd_event_add_inotify(event, &source2, path2,
52 IN_CREATE | IN_DELETE | IN_MODIFY | IN_MOVED_TO,
53 inotify_handler, NULL);
54
55 sd_event_loop(event);
56
57 return 0;
58 }
59