From: claudio <claudio@openbsd.org>
Date: Thu, 30 Jun 2022 15:35:14 +0000 (+0000)
Subject: Allow sysctl mib CTL_NET.PF_INET6 with a length of 3 in PLEDGE_VMINFO.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=90c5cf9bef8df567049d00799709252c78c3e42e;p=openbsd

Allow sysctl mib CTL_NET.PF_INET6 with a length of 3 in PLEDGE_VMINFO.

This will be used for sysconf(3) and getconf(1) to handle _POSIX_IPV6
without opening a socket.
OK sthen@ deraadt@
---

diff --git a/sys/kern/kern_pledge.c b/sys/kern/kern_pledge.c
index c09d5342d1c..0c69ac3f8a2 100644
--- a/sys/kern/kern_pledge.c
+++ b/sys/kern/kern_pledge.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_pledge.c,v 1.284 2022/06/29 12:17:31 jca Exp $	*/
+/*	$OpenBSD: kern_pledge.c,v 1.285 2022/06/30 15:35:14 claudio Exp $	*/
 
 /*
  * Copyright (c) 2015 Nicholas Marriott <nicm@openbsd.org>
@@ -933,6 +933,9 @@ pledge_sysctl(struct proc *p, int miblen, int *mib, void *new)
 		    mib[0] == CTL_VFS && mib[1] == VFS_GENERIC &&
 		    mib[2] == VFS_BCACHESTAT)
 			return (0);
+		if (miblen == 3 &&		/* for sysconf(3) */
+		    mib[0] == CTL_NET && mib[1] == PF_INET6)
+			return (0);
 	}
 
 	if ((pledge & (PLEDGE_INET | PLEDGE_UNIX))) {