[Xen-changelog] [xen-unstable] libxl: actually print an error when execve (in libxl__exec) fails

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
# Date 1296845160 0
# Node ID f4d29a2c45ca96c10d86b5fbf537ffcfc62812da
# Parent  ed9ef3b07d2a9317d4bdef1a8f1fefb1bd63870c
libxl: actually print an error when execve (in libxl__exec) fails

The header comment says libxl__exec logs errors.  So it should do so.

Signed-off-by: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Committed-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
 tools/libxl/libxl_exec.c |    2 ++
 1 files changed, 2 insertions(+)

diff -r ed9ef3b07d2a -r f4d29a2c45ca tools/libxl/libxl_exec.c
--- a/tools/libxl/libxl_exec.c  Fri Feb 04 18:45:26 2011 +0000
+++ b/tools/libxl/libxl_exec.c  Fri Feb 04 18:46:00 2011 +0000
@@ -55,6 +55,8 @@ void libxl__exec(int stdinfd, int stdout
      * to assume they got DFL. */
 
     execvp(arg0, args);
+
+    fprintf(stderr, "libxl: cannot execute %s: %s\n", arg0, strerror(errno));
     _exit(-1);
 }
 

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