MINOR: diag: create cfgdiag module
This module is intended to serve as a placeholder for various
diagnostics executed after the configuration file has been fully loaded.
diff --git a/src/cfgdiag.c b/src/cfgdiag.c
new file mode 100644
index 0000000..35c8e67
--- /dev/null
+++ b/src/cfgdiag.c
@@ -0,0 +1,45 @@
+#include <stdarg.h>
+#include <stdlib.h>
+
+#include <haproxy/cfgdiag.h>
+#include <haproxy/log.h>
+
+/* Use this fonction to emit diagnostic.
+ * This can be used as a shortcut to set value pointed by <ret> to 1 at the
+ * same time.
+ */
+static inline void diag_warning(int *ret, char *fmt, ...)
+{
+ va_list argp;
+
+ va_start(argp, fmt);
+ *ret = 1;
+ _ha_vdiag_warning(fmt, argp);
+ va_end(argp);
+}
+
+/* Use this for dynamic allocation in diagnostics.
+ * In case of allocation failure, this will immediately terminates haproxy.
+ */
+static inline void *diag_alloc(size_t size)
+{
+ void *out = NULL;
+
+ if (!(out = malloc(size))) {
+ fprintf(stderr, "out of memory\n");
+ exit(1);
+ }
+
+ return out;
+}
+
+/* Placeholder to execute various diagnostic checks after the configuration file
+ * has been fully parsed. It will output a warning for each diagnostic found.
+ *
+ * Returns 0 if no diagnostic message has been found else 1.
+ */
+int cfg_run_diagnostics()
+{
+ int ret = 0;
+ return ret;
+}