exterr: add exterr_db_print(), to be used by several ddb dumpers

Sponsored by:	The FreeBSD Foundation

2 files changed, 14 insertions, 0 deletions

diff --git a/sys/kern/sys_generic.c b/sys/kern/sys_generic.c
index a61341df436c..b84f675d1dcb 100644
--- a/sys/kern/sys_generic.c
+++ b/sys/kern/sys_generic.c
@@ -2364,3 +2364,16 @@ exterr_clear(struct kexterr *ke)
 {
 	memset(ke, 0, sizeof(*ke));
 }
+
+#include "opt_ddb.h"
+#ifdef DDB
+#include <ddb/ddb.h>
+
+void
+exterr_db_print(struct kexterr *ke)
+{
+	db_printf("errno %d cat %d msg %s p1 %#jx p2 %#jx line %d\n",
+	    ke->error, ke->cat, ke->msg == NULL ? "<none>" : ke->msg,
+	    (uintmax_t)ke->p1, (uintmax_t)ke->p2, ke->src_line);
+}
+#endif
diff --git a/sys/sys/exterrvar.h b/sys/sys/exterrvar.h
index 1e07f6afb547..8e2961356a1e 100644
--- a/sys/sys/exterrvar.h
+++ b/sys/sys/exterrvar.h
@@ -70,6 +70,7 @@
 	    _SET_ERROR0)(__VA_ARGS__)
 
 void exterr_clear(struct kexterr *ke);
+void exterr_db_print(struct kexterr *ke);
 int exterr_set_from(const struct kexterr *ke);
 int exterr_set(int eerror, int category, const char *mmsg, uintptr_t pp1,
     uintptr_t pp2, int line);