Allow configuration of the SSSD through /etc/sssd/sssd.conf

The SSSD now links with the ini_config and collection libraries
in the common directory.

The monitor will track changes to the /etc/sssd/sssd.conf file
using inotify on platforms that support it, or polled every 5
seconds on platforms that do not.

At startup or modification of the conf file, the monitor will
purge the existing confdb and reread it completely from the conf
file, to ensure that there are no lingering entries. It does this
in a transaction, so there should be no race condition with the
client services.

A new option has been added to the startup options for the SSSD.
It is now possible to specify an alternate config file with the
-c <file> at the command line.

server/Makefile.in

@@ -18,6 +18,7 @@ builddir = @builddir@
 sharedbuilddir = @sharedbuilddir@
 INSTALLCMD = @INSTALL@
 EXTRA_OBJ=@EXTRA_OBJ@
+SSSD_CONF_DIR = @sysconfdir@/sssd
 SSSD_LIBEXEC_PATH = @libexecdir@/@PACKAGE_NAME@
 SSSD_LIBDIR = @pluginpath@
 LDB_LIBDIR = @libdir@/ldb
@@ -62,6 +63,12 @@ OPENLDAP_LIBS = @OPENLDAP_LIBS@
 LDAP_CFLAGS = $(OPENLDAP_CFLAGS)
 LDAP_LIBS = $(OPENLDAP_LIBS)
 
+COLLECTION_CFLAGS = -I ../common/collection -I../common/trace
+COLLECTION_LIBS =  -L ../common/collection/.libs/ -lcollection
+
+INI_CFG_CFLAGS = -I ../common/ini
+INI_CFG_LIBS = -L ../common/ini/.libs/ -lini_config
+
 LIBDL = @LIBDL@
 
 SHLIBEXT = @SHLIBEXT@
@@ -72,13 +79,15 @@ SHLD_FLAGS = @SHLD_FLAGS@
 SONAMEFLAG = @SONAMEFLAG@
 
 LDFLAGS += @LDFLAGS@ -L$(srcdir)/lib
-LIBS = @LIBS@ $(TALLOC_LIBS) $(TDB_LIBS) $(TEVENT_LIBS) $(POPT_LIBS) $(LDB_LIBS) $(DBUS_LIBS) $(PCRE_LIBS)
+LIBS = @LIBS@ $(TALLOC_LIBS) $(TDB_LIBS) $(TEVENT_LIBS) $(POPT_LIBS) $(LDB_LIBS) $(DBUS_LIBS) $(PCRE_LIBS) $(INI_CFG_LIBS) $(COLLECTION_LIBS)
 
 PICFLAG = @PICFLAG@
 CFLAGS := -I$(srcdir)/include -Iinclude -I$(srcdir) -I$(srcdir)/.. \
-       $(POPT_CFLAGS) $(TALLOC_CFLAGS) $(TDB_CFLAGS) $(TEVENT_CFLAGS) $(LDB_CFLAGS) $(DBUS_CFLAGS) $(CHECK_CFLAGS) $(PCRE_CFLAGS) \
+       $(POPT_CFLAGS) $(TALLOC_CFLAGS) $(TDB_CFLAGS) $(TEVENT_CFLAGS) \
+       $(LDB_CFLAGS) $(DBUS_CFLAGS) $(CHECK_CFLAGS) $(PCRE_CFLAGS) \
+       $(COLLECTION_CFLAGS) $(INI_CFG_CFLAGS)\
 	-DLIBDIR=\"$(libdir)\" -DVARDIR=\"$(localstatedir)\" -DSHLIBEXT=\"$(SHLIBEXT)\" -DSSSD_LIBEXEC_PATH=\"$(SSSD_LIBEXEC_PATH)\" \
-	-DSSSD_INTROSPECT_PATH=\"$(SSSD_INTROSPECT_PATH)\" -DUSE_MMAP=1 $(CFLAGS)
+	-DSSSD_INTROSPECT_PATH=\"$(SSSD_INTROSPECT_PATH)\" -DSSSD_CONF_DIR=\"$(SSSD_CONF_DIR)\" -DUSE_MMAP=1 $(CFLAGS)
 
 MDLD = @MDLD@
 MDLD_FLAGS = @MDLD_FLAGS@
@@ -109,6 +118,7 @@ OBJS = $(SERVER_OBJ) $(EXTRA_OBJ)
 headers =
 
 DBUS_SYSBUS_POLICY_DIR = @sysconfdir@/dbus-1/system.d
+SSSD_CONF_FILE = etc/sssd.conf
 
 LIBEXECBINS =  sbin/sssd_nss sbin/sssd_dp sbin/sssd_be sbin/sssd_pam
 ifneq (x$(HAVE_INFOPIPE), x)
@@ -180,7 +190,8 @@ installdirs::
 	          $(DESTDIR)$(SSSD_INTROSPECT_PATH)/infopipe \
 		  $(DESTDIR)$(SSSD_PIPE_PATH)/private \
 		  $(DESTDIR)$(SSSD_DB_PATH) \
-		  $(DESTDIR)$(SSSD_PID_PATH)
+		  $(DESTDIR)$(SSSD_PID_PATH) \
+		  $(DESTDIR)$(SSSD_CONF_DIR)
 
 installheaders:: installdirs
 ifneq (x$(headers), x)