inotify: new applet by Vladimir Dronnikov <dronnikov AT gmail.com>

function                                             old     new   delta
inotifyd_main                                          -     453    +453
packed_usage                                       24246   24450    +204
inotify_add_watch                                      -      47     +47
inotify_init                                           -      29     +29
mask_names                                             -      13     +13
signal_handler                                       130     140     +10
applet_names                                        1859    1868      +9
applet_main                                         1132    1136      +4
applet_nameofs                                       566     568      +2
signalled                                              1       2      +1

2 files changed, 25 insertions, 0 deletions

diff --git a/include/applets.h b/include/applets.h
index 27c3a1b6f..4797e1dd5 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -185,6 +185,7 @@ USE_IFENSLAVE(APPLET(ifenslave, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_IFUPDOWN(APPLET_ODDNAME(ifup, ifupdown, _BB_DIR_SBIN, _BB_SUID_NEVER, ifup))
 USE_INETD(APPLET(inetd, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
 USE_INIT(APPLET(init, _BB_DIR_SBIN, _BB_SUID_NEVER))
+USE_INOTIFYD(APPLET(inotifyd, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_INSMOD(APPLET(insmod, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_INSTALL(APPLET(install, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 #if ENABLE_FEATURE_IP_ADDRESS \
diff --git a/include/usage.h b/include/usage.h
index a1e489453..a4fe6a7e0 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1833,6 +1833,30 @@
 "       ::shutdown:/bin/umount -a -r\n" \
 "       ::shutdown:/sbin/swapoff -a\n"
 
+#define inotifyd_trivial_usage \
+        "/user/space/agent dir/or/file/being/watched[:mask] ..."
+#define inotifyd_full_usage "\n\n" \
+       "Spawn userspace agent on filesystem changes." \
+     "\nWhen a filesystem event matching the mask occurs" \
+     "\non specified file/directory an userspace agent is spawned" \
+     "\nwith the parameters:" \
+     "\n1. actual event(s)" \
+     "\n2. file/directory name" \
+     "\n3. name of subfile (if any), in case of watching a directory" \
+     "\n" \
+     "\n        a       File is accessed" \
+     "\n        c       File is modified" \
+     "\n        e       Metadata changed" \
+     "\n        w       Writtable file is closed" \
+     "\n        0       Unwrittable file is closed" \
+     "\n        r       File is opened" \
+     "\n        m       File is moved from X" \
+     "\n        y       File is moved to Y" \
+     "\n        n       Subfile is created" \
+     "\n        d       Subfile is deleted" \
+     "\n        D       Self is deleted" \
+     "\n        M       Self is moved" \
+
 #define insmod_trivial_usage \
         USE_FEATURE_2_4_MODULES("[OPTION]... ") "MODULE [symbol=value]..."
 #define insmod_full_usage "\n\n" \