xl: new global -N option for dry run

This sets a global dryrun_only variable, which individual commands are
expected to honour.  To avoid accidents, we introduce a new can_dryrun
member in the command table, which is initially set to 0 for each
command.

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/tools/libxl/xl.h b/tools/libxl/xl.h
index bce135abb0..04f9045ff0 100644
--- a/tools/libxl/xl.h
+++ b/tools/libxl/xl.h
@@ -20,6 +20,7 @@
 struct cmd_spec {
     char *cmd_name;
     int (*cmd_impl)(int argc, char **argv);
+    int can_dryrun;
     char *cmd_desc;
     char *cmd_usage;
     char *cmd_option;
@@ -103,6 +104,7 @@ extern xentoollog_logger_stdiostream *logger;
 
 /* global options */
 extern int autoballoon;
+extern int dryrun_only;
 extern char *lockfile;
 extern char *default_vifscript;