[Xen-changelog] [xen-4.1-testing] libxl: Call setsid(2) before exec'ing device model

[Xen patchbot-4.1-testing <patchbot@xxxxxxx>]

# HG changeset patch
# User Jim Fehlig <jfehlig@xxxxxxxxxx>
# Date 1299781075 0
# Node ID 578976db4613572d6341c702a4c6929eb65cb85e
# Parent  943a1d993dcd03824b4ff024ca3b2bc475950d39
libxl: Call setsid(2) before exec'ing device model

While doing development on libvirt libxenlight driver I noticed
that terminating a libxenlight client causes any qemu-dm
processes that were indirectly created by the client to also
terminate.  Calling setsid(2) before exec'ing qemu-dm resolves
the issue.

Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Committed-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---


diff -r 943a1d993dcd -r 578976db4613 tools/libxl/libxl_dm.c
--- a/tools/libxl/libxl_dm.c    Thu Mar 10 18:11:20 2011 +0000
+++ b/tools/libxl/libxl_dm.c    Thu Mar 10 18:17:55 2011 +0000
@@ -694,6 +694,7 @@
     if (rc < 0)
         goto out_close;
     if (!rc) { /* inner child */
+        setsid();
         libxl__exec(null, logfile_w, logfile_w,
                    libxl__abs_path(&gc, info->device_model, 
libxl_libexec_path()),
                    args);

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