tools: acrn-crashlog: add usercrash_c in the pipe of core_pattern

This patch adds the usercrash client in the pipe of core_pattern
without affecting default core_pattern program.

In acrnprobe_prepare.sh, core_pattern will be set as usercrash-wrapper
with all of the arguments, which parses the parameters of the default
core_pattern program and the usercrash client, and then invokes them
separately.

Tracked-On: #1024
Signed-off-by: CHEN Gang <gang.c.chen@intel.com>
Reviewed-by: Zhi Jin <zhi.jin@intel.com>
Reviewed-by: xiaojin2 <xiaojing.liu@intel.com>
Acked-by: Zhang Di <di.zhang@intel.com>

tools/acrn-crashlog/Makefile

@@ -67,6 +67,7 @@ install:
 	@install -p -D -m 0755 $(BUILDDIR)/usercrash/bin/debugger $(DESTDIR)/usr/bin/
 	@install -p -D -m 0755 $(BUILDDIR)/usercrash/bin/usercrash_c $(DESTDIR)/usr/bin/
 	@install -p -D -m 0755 $(BUILDDIR)/usercrash/bin/usercrash_s $(DESTDIR)/usr/bin/
+	@install -p -D -m 0755 $(BUILDDIR)/usercrash/bin/usercrash-wrapper $(DESTDIR)/usr/bin/
 	@install -p -D -m 0755 data/acrnprobe_prepare.sh $(DESTDIR)/usr/bin/
 	@install -d $(DESTDIR)/usr/lib/systemd/system.conf.d/
 	@install -p -D -m 0644 data/40-watchdog.conf $(DESTDIR)/usr/lib/systemd/system.conf.d/
@@ -94,6 +95,9 @@ uninstall:
 	@if [ -e "$(DESTDIR)/usr/bin/usercrash_s" ];then \
 		$(RM) $(DESTDIR)/usr/bin/usercrash_s; \
 	fi
+	@if [ -e "$(DESTDIR)/usr/bin/usercrash-wrapper" ];then \
+		$(RM) $(DESTDIR)/usr/bin/usercrash-wrapper; \
+	fi
 	@if [ -e "$(DESTDIR)/usr/lib/systemd/system.conf.d/40-watchdog.conf" ];then \
 		$(RM) $(DESTDIR)/usr/lib/systemd/system.conf.d/40-watchdog.conf; \
 	fi

tools/acrn-crashlog/data/acrnprobe_prepare.sh

@@ -4,14 +4,19 @@
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
-# modify the core_pattern
 core_pattern_conf="/proc/sys/kernel/core_pattern"
+crashlog_path="/var/log/crashlog"
 
-grep -q "coredump-wrapper" $core_pattern_conf
-if [ "$?" -ne "0" ] then
-	echo "|/usr/bin/usercrash_c %p %e %s" > $core_pattern_conf
+if [ ! -d $crashlog_path ]; then
+	mkdir -p $crashlog_path
 fi
 
+# backup the default core_pattern
+cat $core_pattern_conf > /var/log/crashlog/default_core_pattern
+
+# update the content of core_pattern, passdown all the parameters
+echo "|/usr/bin/usercrash-wrapper %E %P %u %g %s %t %c %h %e %p %i %I %d" > $core_pattern_conf
+
 default_conf="/usr/share/defaults/telemetrics/telemetrics.conf"
 user_conf="/etc/telemetrics/telemetrics.conf"
 

tools/acrn-crashlog/data/usercrash-wrapper

@@ -0,0 +1,129 @@
+#!/bin/bash
+#
+# Copyright (C) <2018> Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+if [ $# != 13 ]; then
+        logger "Expected 13 arguments, got $#"
+        exit -1
+fi
+
+# Error Handling
+default_core_pattern_file="/var/log/crashlog/default_core_pattern"
+
+if [ ! -f $default_core_pattern_file ]; then
+	logger "File default_core_pattern doesn't exist under /var/log/crashlog"
+	exit -1
+fi
+
+# default coredump app and usercrash parameters index file under /tmp
+d_param_index_file=/tmp/default_param_index_file
+u_param_index_file=/tmp/usercrash_param_index_file
+
+# function to get the params from the input arguments
+function get_params()
+{
+	raw_params=$1
+
+	count=$[(${#raw_params} + 1) / 3]
+	for((i=0;i<$count;i++))
+	do
+		a_index=$[$i * 3 + 1]
+		param_list[$i]=${raw_params:($a_index):1}
+	done
+	return 0;
+}
+
+# function to generate the index for the parameters of default coredump app
+function gen_index()
+{
+	full_list=$1
+	dump_list=$2
+
+	i=0
+	for arg in ${dump_list[@]}
+	do
+		q=(`expr \`expr $(expr index "$full_list" "$arg") + 1\` / 2`)
+		index[$i]=$[$q - 1]
+		let i+=1
+	done
+	return 0;
+}
+
+# get default core_pattern parameters list
+default_content=`cat $default_core_pattern_file`
+default_params=${default_content#* }
+
+# abstract the application of the default core_pattern
+t_app=${default_content%% *}
+default_app=${t_app#*|}
+
+# function to save the index to /tmp. The index is the parameter
+# index of the default coredump app and usercrash referring to
+# the full parameters.
+function save_index()
+{
+	# get full coredump parameters list
+	pattern=`cat /proc/sys/kernel/core_pattern`
+	full_params=${pattern#* }
+
+	get_params "$full_params"
+	for((i=0;i<$count;i++))
+	do
+		full_param_list[$i]=${param_list[$i]}
+	done
+
+	get_params "$default_params"
+	for((i=0;i<$count;i++))
+	do
+		default_param_list[$i]=${param_list[$i]}
+	done
+
+	# get the index of default parameter list accroding to
+	# the full parameter list
+	gen_index "${full_param_list[*]}" "${default_param_list[*]}"
+	for((j=0;j<$i;j++))
+	do
+		default_param_index[$j]=${index[$j]}
+	done
+	echo "${default_param_index[@]}" > $d_param_index_file
+
+	# get the index of usercrash_c parameter accroding to
+	# the full parameter list
+	usercrash_param_list=("p" "e" "s")
+	gen_index "${full_param_list[*]}" "${usercrash_param_list[*]}"
+	for((j=0;j<$i;j++))
+	do
+		usercrash_param_index[$j]=${index[$j]}
+	done
+	echo "${usercrash_param_index[@]}" > $u_param_index_file
+}
+
+if [[ ! -f $d_param_index_file ]] || [[ ! -f $u_param_index_file ]];then
+	save_index
+fi
+
+# get all the value of parameters in var[]
+i=0
+for p in "$@"
+do
+	var[$i]=$p
+	let i+=1
+done
+
+str_usercrash_param_index=`cat $u_param_index_file`
+u_param_index_arr=(${str_usercrash_param_index// / })
+for((i=0;i<${#u_param_index_arr[@]};i++))
+do
+	usercrash_var[$i]=${var[${u_param_index_arr[$i]}]}
+done
+
+str_default_param_index=`cat $d_param_index_file`
+d_param_index_arr=(${str_default_param_index// / })
+for((i=0;i<${#d_param_index_arr[@]};i++))
+do
+	default_var[$i]=${var[${d_param_index_arr[$i]}]}
+done
+
+tee >(/usr/bin/usercrash_c ${usercrash_var[*]}) | $default_app ${default_var[*]}