1 files changed, 18 insertions, 0 deletions
diff --git a/qemu-common.h b/qemu-common.h
index d26ff39e87..dd91912024 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -136,6 +136,24 @@ int qemu_main(int argc, char **argv, char **envp);
 void qemu_get_timedate(struct tm *tm, int offset);
 int qemu_timedate_diff(struct tm *tm);
 
+/**
+ * is_help_option:
+ * @s: string to test
+ *
+ * Check whether @s is one of the standard strings which indicate
+ * that the user is asking for a list of the valid values for a
+ * command option like -cpu or -M. The current accepted strings
+ * are 'help' and '?'. '?' is deprecated (it is a shell wildcard
+ * which makes it annoying to use in a reliable way) but provided
+ * for backwards compatibility.
+ *
+ * Returns: true if @s is a request for a list.
+ */
+static inline bool is_help_option(const char *s)
+{
+    return !strcmp(s, "?") || !strcmp(s, "help");
+}
+
 /* cutils.c */
 void pstrcpy(char *buf, int buf_size, const char *str);
 void strpadcpy(char *buf, int buf_size, const char *str, char pad);