From 5c092b9eac78cb2b1f85df0c367cf3a930f6cc40 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Thu, 7 Jan 2010 09:21:56 +0100
Subject: [PATCH] TODO: server: add --panic-action and CTDB_PANIC_ACTION option
 for backtrace support

pass cmdline parameters with spaces...

metze
---
 Makefile.in                | 1 +
 config/ctdb.init           | 6 ++++++
 config/ctdb.sysconfig      | 7 +++++++
 packaging/RPM/ctdb.spec.in | 2 ++
 server/ctdbd.c             | 5 +++++
 5 files changed, 21 insertions(+)

diff --git a/Makefile.in b/Makefile.in
index e5ef81f5..668f35b3 100755
--- a/Makefile.in
+++ b/Makefile.in
@@ -229,6 +229,7 @@ install: all
 	${INSTALLCMD} -m 644 config/functions $(DESTDIR)$(etcdir)/ctdb
 	${INSTALLCMD} -m 755 config/statd-callout $(DESTDIR)$(etcdir)/ctdb
 	${INSTALLCMD} -m 755 config/interface_modify.sh $(DESTDIR)$(etcdir)/ctdb
+	${INSTALLCMD} -m 755 config/gdb_backtrace $(DESTDIR)$(etcdir)/ctdb
 	${INSTALLCMD} -m 644 config/events.d/README $(DESTDIR)$(docdir)/ctdb/README.eventscripts
 	${INSTALLCMD} -m 644 doc/recovery-process.txt $(DESTDIR)$(docdir)/ctdb/recovery-process.txt
 	${INSTALLCMD} -m 755 config/events.d/00.ctdb $(DESTDIR)$(etcdir)/ctdb/events.d
diff --git a/config/ctdb.init b/config/ctdb.init
index 25e158fc..0bdea594 100755
--- a/config/ctdb.init
+++ b/config/ctdb.init
@@ -80,6 +80,11 @@ build_ctdb_options () {
 	    sep=""
 	}
 
+	# we may quote the value
+	[ -n "$4" ] && {
+	    val="$4$2$4"
+	}
+
 	CTDB_OPTIONS="${CTDB_OPTIONS}${CTDB_OPTIONS:+ }${1}${sep}${val}"
     }
 
@@ -109,6 +114,7 @@ build_ctdb_options () {
     maybe_set "--log-ringbuf-size"       "$CTDB_LOG_RINGBUF_SIZE"
     maybe_set "--syslog"                 "$CTDB_SYSLOG"               "yes"
     maybe_set "--max-persistent-check-errors" "$CTDB_MAX_PERSISTENT_CHECK_ERRORS"
+    maybe_set "--panic-action"           "$CTDB_PANIC_ACTION"         "" "'"
 }
 
 check_tdb () {
diff --git a/config/ctdb.sysconfig b/config/ctdb.sysconfig
index 011593d7..87497553 100644
--- a/config/ctdb.sysconfig
+++ b/config/ctdb.sysconfig
@@ -295,6 +295,13 @@ CTDB_DEBUGLEVEL=ERR
 #    CTDB_SET_TRAVERSETIMEOUT=60
 # you can get a list of variables using "ctdb listvars"
 
+# setup a panic action which is triggerd when ctdbd
+# gets SIGABRT, SIGBUS, SIGSEGV or SIGFPE.
+#
+# The magic values %PID% and %PROG% will be substituted.
+#
+# CTDB_PANIC_ACTION="/etc/ctdb/gdb_backtrace %PID% %PROG%"
+
 # any other options you might want. Run ctdbd --help for a list
 # CTDB_OPTIONS=
 
diff --git a/packaging/RPM/ctdb.spec.in b/packaging/RPM/ctdb.spec.in
index 1f43825e..c818c875 100644
--- a/packaging/RPM/ctdb.spec.in
+++ b/packaging/RPM/ctdb.spec.in
@@ -93,6 +93,8 @@ rm -rf $RPM_BUILD_ROOT
 %config(noreplace) %{_sysconfdir}/ctdb/functions
 %attr(755,root,root) %{initdir}/ctdb
 
+%{_sysconfdir}/ctdb/gdb_backtrace
+
 %{_docdir}/ctdb/README.eventscripts
 %{_docdir}/ctdb/recovery-process.txt
 %{_sysconfdir}/ctdb/events.d/00.ctdb
diff --git a/server/ctdbd.c b/server/ctdbd.c
index b90dbcdf..4654d2dc 100644
--- a/server/ctdbd.c
+++ b/server/ctdbd.c
@@ -42,6 +42,7 @@ static struct {
 	const char *public_interface;
 	const char *single_public_ip;
 	const char *node_ip;
+	const char *panic_action;
 	int         valgrinding;
 	int         use_syslog;
 	int         start_as_disabled;
@@ -132,6 +133,9 @@ int main(int argc, const char *argv[])
 		{ "dbdir-persistent", 0, POPT_ARG_STRING, &options.db_dir_persistent, 0, "directory for persistent tdb files", NULL },
 		{ "dbdir-state", 0, POPT_ARG_STRING, &options.db_dir_state, 0, "directory for internal state tdb files", NULL },
 		{ "reclock", 0, POPT_ARG_STRING, &options.recovery_lock_file, 0, "location of recovery lock file", "filename" },
+		{ "panic-action", 0, POPT_ARG_STRING,
+		  &options.panic_action, 0,
+		  "set the panic action (default none)", NULL },
 		{ "valgrinding", 0, POPT_ARG_NONE, &options.valgrinding, 0, "make valgrind more effective", NULL },
 		{ "syslog", 0, POPT_ARG_NONE, &options.use_syslog, 0, "log messages to syslog", NULL },
 		{ "start-as-disabled", 0, POPT_ARG_NONE, &options.start_as_disabled, 0, "Node starts in disabled state", NULL },
@@ -176,6 +180,7 @@ int main(int argc, const char *argv[])
 
 	ctdb_block_signal(SIGPIPE);
 	fault_setup("ctdbd");
+	panic_action = options.panic_action;
 
 	ev = event_context_init(NULL);
 	tevent_loop_allow_nesting(ev);
-- 
2.34.1