[src/trunk]: src/usr.bin/kdump kdump(1): Symbolic printing for MALLOC_OPTIONS...

[nonaka <nonaka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7eeafbec88af
branches:  trunk
changeset: 452708:7eeafbec88af
user:      nonaka <nonaka%NetBSD.org@localhost>
date:      Tue Jul 23 01:54:51 2019 +0000

description:
kdump(1): Symbolic printing for MALLOC_OPTIONS="U".

diffstat:

 usr.bin/kdump/kdump.c |  26 ++++++++++++++++++++++++--
 1 files changed, 24 insertions(+), 2 deletions(-)

diffs (54 lines):

diff -r bf4b7c6123e0 -r 7eeafbec88af usr.bin/kdump/kdump.c
--- a/usr.bin/kdump/kdump.c     Tue Jul 23 00:52:01 2019 +0000
+++ b/usr.bin/kdump/kdump.c     Tue Jul 23 01:54:51 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kdump.c,v 1.131 2019/05/06 19:20:13 christos Exp $     */
+/*     $NetBSD: kdump.c,v 1.132 2019/07/23 01:54:51 nonaka Exp $       */
 
 /*-
  * Copyright (c) 1988, 1993
@@ -39,7 +39,7 @@
 #if 0
 static char sccsid[] = "@(#)kdump.c    8.4 (Berkeley) 4/28/95";
 #else
-__RCSID("$NetBSD: kdump.c,v 1.131 2019/05/06 19:20:13 christos Exp $");
+__RCSID("$NetBSD: kdump.c,v 1.132 2019/07/23 01:54:51 nonaka Exp $");
 #endif
 #endif /* not lint */
 
@@ -1143,6 +1143,27 @@
 }
 
 static void
+ktruser_malloc(const char *name, const void *buf, size_t len)
+{
+       struct ut { void *p; size_t s; void *r; } m;
+
+       if (len != sizeof(m))
+               warnx("%.*s: len %zu != %zu", KTR_USER_MAXIDLEN, name, len,
+                   sizeof(m));
+       memcpy(&m, buf, len < sizeof(m) ? len : sizeof(m));
+       if (m.p == NULL && m.s == 0 && m.r == NULL)
+               printf("%.*s: malloc_init()\n", KTR_USER_MAXIDLEN, name);
+       else if (m.p != NULL && m.s != 0)
+               printf("%.*s: %p = realloc(%p, %zu)\n", KTR_USER_MAXIDLEN, name,
+                   m.r, m.p, m.s);
+       else if (m.s == 0)
+               printf("%.*s: free(%p)\n", KTR_USER_MAXIDLEN, name, m.p);
+       else
+               printf("%.*s: %p = malloc(%zu)\n", KTR_USER_MAXIDLEN, name,
+                   m.r, m.s);
+}
+
+static void
 ktruser_misc(const char *name, const void *buf, size_t len)
 {
        size_t i;
@@ -1161,6 +1182,7 @@
        { "msghdr", ktruser_msghdr },
        { "mbsoname", ktruser_soname },
        { "mbcontrol", ktruser_control },
+       { "malloc", ktruser_malloc },
        { NULL, ktruser_misc },
 };