From daed3944256cc529f1908bfa8a5e5cacbe1123c8 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Fri, 20 Nov 2009 14:38:45 +0000
Subject: removing directories from watch list when they are deleted or moved


diff --git a/rhdropbox.c b/rhdropbox.c
index 2478616..3c16ba6 100644
--- a/rhdropbox.c
+++ b/rhdropbox.c
@@ -59,7 +59,7 @@ int send_response(int fd, const char* response)
   return ret;
 }
 
-int process_watch(int inotify_fd, read_buffer_t* buffer, options_t* opt)
+int process_watch(int inotify_fd, read_buffer_t* buffer, watch_list_t* watch_lst, options_t* opt)
 {
   log_printf(DEBUG, "something changed on watch descriptor '%d'", inotify_fd);
 
@@ -82,6 +82,19 @@ int process_watch(int inotify_fd, read_buffer_t* buffer, options_t* opt)
         event = (struct inotify_event*)buffer->buf;
         u_int32_t len = sizeof(struct inotify_event) + event->len;
         if(buffer->offset >= len) {
+          log_printf(INFO, "received event for %d (mask=0x%08X, cookie=0x%08X name[%u]='%s')", 
+                     event->wd, event->mask, event->cookie, event->len, event->len > 0 ? event->name : "");
+
+          if(event->mask & IN_DELETE_SELF || event->mask & IN_MOVE_SELF) {
+            char* path = watch_list_find_path(watch_lst, event->wd);
+            log_printf(NOTICE, "removing deleted or moved directory ('%s') from watch list", path);
+            watch_list_rm(watch_lst, path);
+          }
+          else if(event->mask & IN_IGNORED) {
+            log_printf(DEBUG, "ignoring inotify_rm_watch based events");
+          }
+          else {
+/*  call script here */
 /*     client_t* client; */
 /*     int listener_cnt = 0; */
 /*     for(client = client_lst; client; client = client->next) */
@@ -90,9 +103,8 @@ int process_watch(int inotify_fd, read_buffer_t* buffer, options_t* opt)
 /*         listener_cnt++; */
 /*       } */
 /*     log_printf(DEBUG, "sent status to %d additional listeners", listener_cnt); */
-          log_printf(DEBUG, "received event for %d (mask=0x%08X, cookie=0x%08X name[%u]='%s')", 
-                     event->wd, event->mask, event->cookie, event->len, event->len > 0 ? event->name : "");
-          
+          }
+
           if(buffer->offset > len) {
             memmove(buffer->buf, &buffer->buf[len], buffer->offset - len);
             buffer->offset -= len;
@@ -112,7 +124,7 @@ int process_cmd_add_remove(cmd_id_t cmd_id, const char* path, int fd, int inotif
 {
   int wd = 0;
   if(cmd_id == ADD)
-    wd = inotify_add_watch(inotify_fd, path, IN_CLOSE_WRITE);
+    wd = inotify_add_watch(inotify_fd, path, IN_CLOSE_WRITE | IN_DELETE_SELF | IN_MOVE_SELF | IN_ONLYDIR);
   else if(cmd_id == REMOVE) {
     int fd = watch_list_find_fd(watch_lst, path);
     if(fd >= 0)
@@ -314,7 +326,7 @@ int main_loop(int cmd_listen_fd, int inotify_fd, options_t* opt)
     }
    
     if(FD_ISSET(inotify_fd, &tmpfds)) {
-      return_value = process_watch(inotify_fd, &event_buffer, opt);
+      return_value = process_watch(inotify_fd, &event_buffer, &watch_lst, opt);
       if(return_value)
         break;
     }
diff --git a/watch_list.c b/watch_list.c
index 28ca97d..7e23b93 100644
--- a/watch_list.c
+++ b/watch_list.c
@@ -90,7 +90,7 @@ int watch_list_add(watch_list_t* list, int watch_fd, const char* string)
 
 void watch_list_rm(watch_list_t* list, const char* path)
 {
-  if(!list)
+  if(!list || !path)
     return;
   
   watch_list_element_t* tmp = NULL;
-- 
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