TT#34704 Fix sems to write pid file when running with -E option

Change-Id: I530d6684c631b4f5e4d825a30f814517b1858717
(cherry picked from commit ae34e870c8)

debian/patches/series

@@ -30,3 +30,4 @@ sipwise/0020-TT-9521-fix-200OK-without-SPD.patch
 sipwise/usage-reporting.patch
 sipwise/session_timers
 sipwise/introduce_forcesdp_from_pbx.patch
+sipwise/0001-TT-34704-Fix-sems-and-sems-pbx-to-write-pid-file-whe.patch

debian/patches/sipwise/0001-TT-34704-Fix-sems-and-sems-pbx-to-write-pid-file-whe.patch

@@ -0,0 +1,66 @@
+From 12ea81babb899cd637426afd13740dc9729ca8d3 Mon Sep 17 00:00:00 2001
+From: Roman Romanchenko <rromanchenko@sipwise.com>
+Date: Mon, 26 Mar 2018 12:47:33 +0300
+Subject: [PATCH] TT#34704 Fix sems and sems-pbx to write pid file when running
+ with -E option
+
+ - now pid file written with -E as well
+---
+ core/sems.cpp | 15 +++++++--------
+ 1 file changed, 7 insertions(+), 8 deletions(-)
+
+diff --git a/core/sems.cpp b/core/sems.cpp
+index 6f03e5cd..a1814d32 100644
+--- a/core/sems.cpp
++++ b/core/sems.cpp
+@@ -207,11 +207,11 @@ static bool apply_args(std::map<char,string>& args)
+       AmConfig::PlugInPath = it->second;
+       break;
+ 
+-#ifndef DISABLE_DAEMON_MODE
+     case 'P':
+       AmConfig::DaemonPidFile = it->second;
+       break;
+ 
++#ifndef DISABLE_DAEMON_MODE
+     case 'u':
+       AmConfig::DaemonUid = it->second;
+       break;
+@@ -535,10 +535,6 @@ int main(int argc, char* argv[])
+       DBG("I'm out. pid: %d", main_pid);
+       return 0;
+     }
+-	
+-    if(write_pid_file()<0) {
+-      goto error;
+-    }
+ 
+ #ifdef PROPAGATE_COREDUMP_SETTINGS
+     if (have_limit) {
+@@ -566,6 +562,10 @@ int main(int argc, char* argv[])
+     };
+   }
+ 
++  if(write_pid_file()<0) {
++    goto error;
++  }
++
+ #endif /* DISABLE_DAEMON_MODE */
+ 
+   main_pid = getpid();
+@@ -661,10 +661,9 @@ int main(int argc, char* argv[])
+   async_file_writer::instance()->stop();
+   async_file_writer::instance()->join();
+ 
++  unlink(AmConfig::DaemonPidFile.c_str());
++
+ #ifndef DISABLE_DAEMON_MODE
+-  if (AmConfig::DaemonMode) {
+-    unlink(AmConfig::DaemonPidFile.c_str());
+-  }
+   if(fd[1]){
+      main_pid = -1;
+      DBG("send -1 to parent\n");
+-- 
+2.17.1
+