(daemon) systemd support, part 1: add sd_notify() calls to transmission-daemon if...

diff --git a/configure.ac b/configure.ac
index 0918fe1462b688ff7fdb9e6c7357726fbc09975b..f60a496403abf5ca94cb62988cf9be521ddec52f 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -176,6 +176,25 @@ AC_CHECK_HEADERS([sys/statvfs.h \
                   xfs/xfs.h])
 
 
+dnl ----------------------------------------------------------------------------
+dnl
+dnl file monitoring for the daemon
+
+# Check whether to enable systemd startup notification.
+# This requires libsystemd-daemon.
+AC_ARG_WITH([systemd-daemon], AS_HELP_STRING([--with-systemd-daemon],
+            [Add support for systemd startup notification (default is autodetected)])
+            [USE_SYSTEMD_DAEMON=$withval], [USE_SYSTEMD_DAEMON=auto])
+AS_IF([test "x$USE_SYSTEMD_DAEMON" != "xno"], [
+    PKG_CHECK_MODULES([SYSTEMD_DAEMON], [libsystemd-daemon],
+        [AC_DEFINE(USE_SYSTEMD_DAEMON,1,[Use systemd startup notification])],
+        [AS_IF([test "x$USE_SYSTEMD_DAEMON" = "xyes"],
+            [AC_MSG_ERROR([systemd startup notification support requested, but libsystemd-daemon not found.])]
+        )]
+    )
+])
+
+
 dnl ----------------------------------------------------------------------------
 dnl
 dnl  dht

diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 6ecd9cde3fdf81111bb569003be321cb388d8617..12ab13b16cef0a70354e0d0f2cc3af935aa966c7 100644 (file)
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -4,6 +4,7 @@ AM_CFLAGS = \
     @LIBEVENT_CFLAGS@ \
     @OPENSSL_CFLAGS@ \
     @LIBCURL_CFLAGS@ \
+    @SYSTEMD_DAEMON_CFLAGS@ \
     @ZLIB_CFLAGS@ \
     @PTHREAD_CFLAGS@
 
@@ -28,6 +29,7 @@ LDADD = \
     @LIBCURL_LIBS@ \
     @OPENSSL_LIBS@ \
     @INTLLIBS@ \
+    @SYSTEMD_DAEMON_LIBS@ \
     @ZLIB_LIBS@ \
     @PTHREAD_LIBS@
 

diff --git a/daemon/daemon.c b/daemon/daemon.c
index abdb50ca316d07d2214c712dd3d7c196f2a69534..b278510b0223e41ca9d87828238b2541aeefde28 100644 (file)
--- a/daemon/daemon.c
+++ b/daemon/daemon.c
@@ -30,6 +30,13 @@
 #include <libtransmission/variant.h>
 #include <libtransmission/version.h>
 
+#ifdef USE_SYSTEMD_DAEMON
+ #include <systemd/sd-daemon.h>
+#else
+ static void sd_notify (int status UNUSED, const char * str UNUSED) { }
+ static void sd_notifyf (int status UNUSED, const char * fmt UNUSED, ...) { }
+#endif
+
 #include "watch.h"
 
 #define MY_NAME "transmission-daemon"
@@ -508,6 +515,8 @@ main (int argc, char ** argv)
         exit (1);
     }
 
+    sd_notifyf (0, "MAINPID=%d\n", (int)getpid()); 
+
     /* start the session */
     tr_formatter_mem_init (MEM_K, MEM_K_STR, MEM_M_STR, MEM_G_STR, MEM_T_STR);
     tr_formatter_size_init (DISK_K, DISK_K_STR, DISK_M_STR, DISK_G_STR, DISK_T_STR);
@@ -573,12 +582,27 @@ main (int argc, char ** argv)
         openlog (MY_NAME, LOG_CONS|LOG_PID, LOG_DAEMON);
 #endif
 
-    while (!closing) {
-        tr_wait_msec (1000); /* sleep one second */
-        dtr_watchdir_update (watchdir);
-        pumpLogMessages (logfile);
-    }
+  sd_notify( 0, "READY=1\n" ); 
+
+  while (!closing)
+    { 
+      double up;
+      double dn;
+
+      tr_wait_msec (1000); /* sleep one second */ 
+
+      dtr_watchdir_update (watchdir); 
+      pumpLogMessages (logfile); 
+
+      up = tr_sessionGetRawSpeed_KBps (mySession, TR_UP);
+      dn = tr_sessionGetRawSpeed_KBps (mySession, TR_DOWN);
+      if (up>0 || dn>0)
+        sd_notifyf (0, "STATUS=Uploading %.2f KBps, Downloading %.2f KBps.\n", up, dn); 
+      else
+        sd_notify (0, "STATUS=Idle.\n"); 
+    } 
 
+    sd_notify( 0, "STATUS=Closing transmission session...\n" );
     printf ("Closing transmission session...");
     tr_sessionSaveSettings (mySession, configDir, &settings);
     dtr_watchdir_free (watchdir);
@@ -599,5 +623,6 @@ main (int argc, char ** argv)
     if (pidfile_created)
         tr_remove (pid_filename);
     tr_variantFree (&settings);
+    sd_notify (0, "STATUS=\n");
     return 0;
 }