[Xen-changelog] [xen-unstable] libxl: log device model arguments to aid debugging

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1332167041 0
# Node ID af1096d2fe740cdd4d1743a16786f8722d4da35f
# Parent  db3ac329f3e792686868493bbc79eb6d506c4f7b
libxl: log device model arguments to aid debugging

At the moment the only easy way to get at these is to strace xl.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
---


diff -r db3ac329f3e7 -r af1096d2fe74 tools/libxl/libxl_dm.c
--- a/tools/libxl/libxl_dm.c    Tue Apr 03 15:25:01 2012 +0100
+++ b/tools/libxl/libxl_dm.c    Mon Mar 19 14:24:01 2012 +0000
@@ -893,7 +893,7 @@ int libxl__create_device_model(libxl__gc
     char *path, *logfile;
     int logfile_w, null;
     int rc;
-    char **args;
+    char **args, **arg;
     libxl__spawner_starting buf_starting, *p;
     xs_transaction_t t;
     char *vm_path;
@@ -985,6 +985,10 @@ retry_transaction:
         }
     }
 
+    LIBXL__LOG(CTX, XTL_DEBUG, "Spawning device-model %s with arguments:", dm);
+    for (arg = args; *arg; arg++)
+        LIBXL__LOG(CTX, XTL_DEBUG, "  %s", *arg);
+
     rc = libxl__spawn_spawn(gc, p->for_spawn, "device model",
                             libxl_spawner_record_pid, p);
     if (rc < 0)

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