From: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Date: Wed, 16 Nov 2011 12:17:21 +0000 (-0500)
Subject: usttrace: allow spaces in command-line arguments
X-Git-Tag: v0.16~2
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=f3c6d9046c03c71b2028c88a9444519299b7b4c2;p=ust.git

usttrace: allow spaces in command-line arguments

The usttrace uses $*, which expands arguments without preserving their
boundaries.  This causes arguments that include spaces to be mangled:

[0] "echo"
[1] "hello world"

becomes:

[0] "echo"
[1] "hello"
[2] "world"

Use "$@" instead so that argument boundaries are preserved.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/usttrace b/usttrace
index e76dae7..d1a6e5f 100755
--- a/usttrace
+++ b/usttrace
@@ -85,16 +85,13 @@ if [ -n "$where" ]; then
 	exit 0
 fi
 
-# Prepare vars
-CMD=$*
-
 # Validate input
 if [ -z "$HOME" ];
 then
 	error "no home specified"
 fi
 
-if [ -z "$CMD" ];
+if [ -z "$*" ];
 then
 	error "no command specified"
 	usage;
@@ -196,7 +193,7 @@ fi
     fi
 
 # Execute the command
-    $CMD 2>&1
+    "$@" 2>&1
 ) | tee "$OUTDIR/app.log"
 
 ## Because of the keepalive mechanism, we're sure that by the time