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Merge pull request #8822 from fbuihuu/rfc-tmpfiles-safe-upstream
[thirdparty/systemd.git] / man / inotify-watch-tmp.c
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1#include <stdio.h>
2#include <string.h>
3#include <sys/inotify.h>
4
5#include <systemd/sd-event.h>
6
7#define _cleanup_(f) __attribute__((cleanup(f)))
8
9static int inotify_handler(sd_event_source *source,
10 const struct inotify_event *event,
11 void *userdata) {
12
13 const char *desc = NULL;
14
15 sd_event_source_get_description(source, &desc);
16
17 if (event->mask & IN_Q_OVERFLOW)
18 printf("inotify-handler <%s>: overflow\n", desc);
19 else if (event->mask & IN_CREATE)
20 printf("inotify-handler <%s>: create on %s\n", desc, event->name);
21 else if (event->mask & IN_DELETE)
22 printf("inotify-handler <%s>: delete on %s\n", desc, event->name);
23 else if (event->mask & IN_MOVED_TO)
24 printf("inotify-handler <%s>: moved-to on %s\n", desc, event->name);
25
26 /* Terminate the program if an "exit" file appears */
27 if ((event->mask & (IN_CREATE|IN_MOVED_TO)) &&
28 strcmp(event->name, "exit") == 0)
29 sd_event_exit(sd_event_source_get_event(source), 0);
30
31 return 1;
32}
33
34int main(int argc, char **argv) {
35 _cleanup_(sd_event_unrefp) sd_event *event = NULL;
36 _cleanup_(sd_event_source_unrefp) sd_event_source *source1 = NULL, *source2 = NULL;
37
38 const char *path1 = argc > 1 ? argv[1] : "/tmp";
39 const char *path2 = argc > 2 ? argv[2] : NULL;
40
41 /* Note: failure handling is omitted for brevity */
42
43 sd_event_default(&event);
44
45 sd_event_add_inotify(event, &source1, path1,
46 IN_CREATE | IN_DELETE | IN_MODIFY | IN_MOVED_TO,
47 inotify_handler, NULL);
48 if (path2)
49 sd_event_add_inotify(event, &source2, path2,
50 IN_CREATE | IN_DELETE | IN_MODIFY | IN_MOVED_TO,
51 inotify_handler, NULL);
52
53 sd_event_loop(event);
54
55 return 0;
56}