irmd, lib: Create and destroy IPC Processes

This adds the functionality to create and destroy IPCPs. Upon creation
a new process is forked and execve'd. Upon destruction the IPCP is
destroyed by killing it with SIGTERM.

4 files changed, 73 insertions, 8 deletions

diff --git a/include/ouroboros/CMakeLists.txt b/include/ouroboros/CMakeLists.txt
index e862de8c..167cf0e2 100644
--- a/include/ouroboros/CMakeLists.txt
+++ b/include/ouroboros/CMakeLists.txt
@@ -1,3 +1,7 @@
+configure_file(
+  "${CMAKE_CURRENT_SOURCE_DIR}/config.h.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/config.h")
+
 set(HEADER_FILES
         bitmap.h
         cdap.h
@@ -11,7 +15,8 @@ set(HEADER_FILES
         logs.h
         rina_name.h
         sockets.h
+        utils.h
 )
 
-install(FILES ${HEADER_FILES}
+install(FILES ${HEADER_FILES} "${CMAKE_CURRENT_BINARY_DIR}/config.h"
   DESTINATION include/ouroboros)
diff --git a/include/ouroboros/config.h.in b/include/ouroboros/config.h.in
new file mode 100644
index 00000000..0f5c2131
--- /dev/null
+++ b/include/ouroboros/config.h.in
@@ -0,0 +1,31 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Configuration information
+ *
+ *    Sander Vrijders <sander.vrijders@intec.ugent.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef OUROBOROS_CONFIG
+#define OUROBOROS_CONFIG
+
+#define PROJECT_NAME     "@CMAKE_PROJECT_NAME@"
+#define PROJECT_VERSION  "@PACKAGE_VERSION@"
+#define INSTALL_DIR      "@CMAKE_INSTALL_PREFIX@"
+#define BUILD_TYPE       "@CMAKE_BUILD_TYPE@"
+
+#endif
diff --git a/include/ouroboros/ipcp.h b/include/ouroboros/ipcp.h
index 39e9c909..5e3e7f8c 100644
--- a/include/ouroboros/ipcp.h
+++ b/include/ouroboros/ipcp.h
@@ -23,26 +23,28 @@
 #ifndef OUROBOROS_IPCP_H
 #define OUROBOROS_IPCP_H
 
+#include <sys/types.h>
+
 #include "common.h"
 #include "rina_name.h"
 
 struct ipcp;
 
 /* Returns the process id */
-int ipcp_create(rina_name_t name,
-                char * ipcp_type);
-int ipcp_destroy(int pid);
+pid_t ipcp_create(rina_name_t name,
+                  char * ipcp_type);
+int ipcp_destroy(pid_t pid);
 
-int ipcp_reg(int pid,
+int ipcp_reg(pid_t pid,
              char ** difs,
              size_t difs_size);
-int ipcp_unreg(int pid,
+int ipcp_unreg(pid_t pid,
                char ** difs,
                size_t difs_size);
 
-int ipcp_bootstrap(int pid,
+int ipcp_bootstrap(pid_t pid,
                    struct dif_config conf);
-int ipcp_enroll(int pid,
+int ipcp_enroll(pid_t pid,
                 char * dif_name,
                 rina_name_t member,
                 char ** n_1_difs,
diff --git a/include/ouroboros/utils.h b/include/ouroboros/utils.h
new file mode 100644
index 00000000..0e50c039
--- /dev/null
+++ b/include/ouroboros/utils.h
@@ -0,0 +1,27 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Handy utilities
+ *
+ *    Sander Vrijders <sander.vrijders@intec.ugent.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * Returns the number of characters a uint would
+ * need when represented as a string
+ */
+int n_digits(unsigned i);