dtruss -F option

dtrussF.patch

--- /usr/bin/dtruss	2012-02-22 00:58:47.000000000 +0000
+++ dtruss.dashF	2013-07-10 21:16:03.000000000 +0100
@@ -6,7 +6,7 @@
 #
 # 17-Jun-2005, ver 0.80         (check for newer versions)
 #
-# USAGE: dtruss [-acdeflhoLs] [-t syscall] { -p PID | -n name | command }
+# USAGE: dtruss [-acdeflhoLs] [-F outfile] [-t syscall] { -p PID | -n name | command }
 #
 #          -p PID          # examine this PID
 #          -n name         # examine this process name
@@ -15,6 +15,7 @@
 #          -c              # print system call counts
 #          -d              # print relative timestamps (us)
 #          -e              # print elapsed times (us)
+#          -F outfile      # send output to filename (default is stderr)
 #          -f              # follow children as they are forked
 #          -l              # force printing of pid/lwpid per line
 #          -o              # print on cpu times (us)
@@ -72,9 +73,10 @@
 opt_relative=0; opt_printid=0; opt_follow=0
 opt_command=0; command=""; opt_buf=0; buf="4m"
 opt_trace=0; trace="."; opt_stack=0;
+opt_outfile="/dev/stderr"
 
 ### Process options
-while getopts ab:cdefhln:op:st:L name
+while getopts ab:cdeF:fhln:op:st:L name
 do
         case $name in
 	b)	opt_buf=1; buf=$OPTARG ;;
@@ -86,13 +88,14 @@
 	c)	opt_counts=1 ;;
 	d)	opt_relative=1 ;;
 	e)	opt_elapsed=1 ;;
+	F)	opt_outfile=$OPTARG ;;
 	f)	opt_follow=1 ;;
 	l)	opt_printid=1 ;;
 	o)	opt_cpu=1 ;;
 	L)	opt_printid=-1 ;;
 	s)	opt_stack=-1 ;;
         h|?)    cat <<-END >&2
-		USAGE: dtruss [-acdefholLs] [-t syscall] { -p PID | -n name | command }
+		USAGE: dtruss [-acdefholLs] [-F outfile] [-t syscall] { -p PID | -n name | command }
 
 		          -p PID          # examine this PID
 		          -n name         # examine this process name
@@ -101,6 +104,7 @@
 		          -c              # print syscall counts
 		          -d              # print relative times (us)
 		          -e              # print elapsed times (us)
+			  -F outfile      # send output to filename
 		          -f              # follow children
 		          -l              # force printing pid/lwpid
 		          -o              # print on cpu times
@@ -678,11 +682,9 @@
 #fi
 
 ### Run DTrace (Mac OS X)
-# Redirect the output to /dev/stderr so that it doesn't mingle with
-# data going to the target's stdout
 if [ $opt_command -eq 1 ]; then
 	/usr/sbin/dtrace -x dynvarsize=$buf -x evaltime=exec -n "$dtrace" \
-	    -c "$command" -o /dev/stderr
+	    -c "$command" -o "$opt_outfile"
 else
-	/usr/sbin/dtrace -x dynvarsize=$buf -n "$dtrace" -o /dev/stderr
+	/usr/sbin/dtrace -x dynvarsize=$buf -n "$dtrace" -o "$opt_outfile"
 fi