Add basic command line parameters to full-trace.sh and trace-process.sh.

This patch adds the following command line parameters to full-trace.sh:
-b|--bufsize: specify tracing buffer size;
-d|--debug  : enable debugging (this adds debug arguments to the bash
              executing the tracing scripts).
The buffer size option is also enabled in the trace-process.sh script
which actually sets up tracing.

full-trace.sh

@@ -1,7 +1,43 @@
 #!/bin/bash
 
+SHELL=bash
+BASHARG=
 
-./finegrain-uprobes.sh $1
-./trace-process.sh $1
-./rewrite-addresses.sh $1
-#./clean.sh
+usage()
+{
+cat << EOF
+usage: $0 [-b bufsize] [-d] <command>
+Full process tracer (userspace, libraries, kernel)
+	OPTIONS:
+-b	Buffer size
+-d	Debug
+EOF
+}
+
+options=$(getopt -o db: -l "debug,bufsize:" -n "full-trace.sh" -- "$@")
+if [ $? -ne 0 ]; then
+	exit 1
+fi
+
+eval set -- "$options"
+
+while true; do
+	case "$1" in
+		-d|--debug) BASHARG=-xv ;;
+		-b|--bufsize) BUFSIZE=$2; shift ;;
+		(--) shift; break;;
+	esac
+	shift
+done
+
+CMD=$@
+
+if [ "$BUFSIZE" != "" ]; then
+	TRACEARGS="-b $BUFSIZE"
+else
+	TRACEARGS=
+fi
+
+$SHELL $BASHARG ./finegrain-uprobes.sh $CMD
+sudo $SHELL $BASHARG ./trace-process.sh $TRACEARGS $CMD
+$SHELL $BASHARG ./rewrite-addresses.sh $CMD

trace-process.sh

@@ -1,4 +1,21 @@
-#!/bin/bash -xv
+#!/bin/bash
+
+BUFSIZE=2000000
+
+options=$(getopt -o b: -l "bufsize:" -n "trace-process.sh" -- "$@")
+if [ $? -ne 0 ]; then
+        exit 1
+fi
+
+eval set -- "$options"
+
+while true; do
+        case "$1" in
+                -b|--bufsize) BUFSIZE=$2; shift ;;
+                (--) shift; break;;
+        esac
+        shift
+done
 
 CMD="$@"
 UPROBES="/tmp/uprobes"
@@ -15,7 +32,7 @@ make wrapper
 
 echo "tracing $CMD"
 echo function_graph | sudo tee /sys/kernel/debug/tracing/current_tracer
-echo 2000000 | sudo tee /sys/kernel/debug/tracing/buffer_size_kb
+echo $BUFSIZE | sudo tee /sys/kernel/debug/tracing/buffer_size_kb
 echo 1 | sudo tee /sys/kernel/debug/tracing/tracing_on
 echo | sudo tee /sys/kernel/debug/tracing/uprobe_events
 cat $UPROBES | sudo tee -a /sys/kernel/debug/tracing/uprobe_events