QemuOpts: add qemu_opts_print_help to replace print_option_help

print_option_help takes QEMUOptionParameter as parameter, add
qemu_opts_print_help to take QemuOptsList as parameter for later
replace work.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Leandro Dorileo <l@dorileo.org>
Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
Signed-off-by: Chunyan Liu <cyliu@suse.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/util/qemu-option.c b/util/qemu-option.c
index a7330c6321..cd03eb43c4 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -553,6 +553,19 @@ void print_option_help(QEMUOptionParameter *list)
     }
 }
 
+void qemu_opts_print_help(QemuOptsList *list)
+{
+    QemuOptDesc *desc;
+
+    assert(list);
+    desc = list->desc;
+    printf("Supported options:\n");
+    while (desc && desc->name) {
+        printf("%-16s %s\n", desc->name,
+               desc->help ? desc->help : "No description available");
+        desc++;
+    }
+}
 /* ------------------------------------------------------------------ */
 
 static QemuOpt *qemu_opt_find(QemuOpts *opts, const char *name)