[src/trunk]: src/sys/kern Fix kernel pointer leaks in sysctl_unpcblist.

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

details:   https://anonhg.NetBSD.org/src/rev/c062f0d31f92
branches:  trunk
changeset: 994851:c062f0d31f92
user:      maxv <maxv%NetBSD.org@localhost>
date:      Sat Nov 24 17:16:44 2018 +0000

description:
Fix kernel pointer leaks in sysctl_unpcblist.

diffstat:

 sys/kern/uipc_domain.c |  18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)

diffs (54 lines):

diff -r e231bab06efa -r c062f0d31f92 sys/kern/uipc_domain.c
--- a/sys/kern/uipc_domain.c    Sat Nov 24 17:05:54 2018 +0000
+++ b/sys/kern/uipc_domain.c    Sat Nov 24 17:16:44 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uipc_domain.c,v 1.104 2018/09/03 16:29:35 riastradh Exp $      */
+/*     $NetBSD: uipc_domain.c,v 1.105 2018/11/24 17:16:44 maxv Exp $   */
 
 /*
  * Copyright (c) 1982, 1986, 1993
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uipc_domain.c,v 1.104 2018/09/03 16:29:35 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uipc_domain.c,v 1.105 2018/11/24 17:16:44 maxv Exp $");
 
 #include <sys/param.h>
 #include <sys/socket.h>
@@ -472,6 +472,7 @@
 static void
 sysctl_dounpcb(struct kinfo_pcb *pcb, const struct socket *so)
 {
+       const bool allowaddr = get_expose_address(curproc);
        struct unpcb *unp = sotounpcb(so);
        struct sockaddr_un *un = unp->unp_addr;
 
@@ -482,9 +483,9 @@
        pcb->ki_protocol = so->so_proto->pr_protocol;
        pcb->ki_pflags = unp->unp_flags;
 
-       pcb->ki_pcbaddr = PTRTOUINT64(unp);
+       COND_SET_VALUE(pcb->ki_pcbaddr, PTRTOUINT64(unp), allowaddr);
        /* pcb->ki_ppcbaddr = unp has no ppcb... */
-       pcb->ki_sockaddr = PTRTOUINT64(so);
+       COND_SET_VALUE(pcb->ki_sockaddr, PTRTOUINT64(so), allowaddr);
 
        pcb->ki_sostate = so->so_state;
        /* pcb->ki_prstate = unp has no state... */
@@ -523,10 +524,11 @@
        }
 
        pcb->ki_inode = unp->unp_ino;
-       pcb->ki_vnode = PTRTOUINT64(unp->unp_vnode);
-       pcb->ki_conn = PTRTOUINT64(unp->unp_conn);
-       pcb->ki_refs = PTRTOUINT64(unp->unp_refs);
-       pcb->ki_nextref = PTRTOUINT64(unp->unp_nextref);
+       COND_SET_VALUE(pcb->ki_vnode, PTRTOUINT64(unp->unp_vnode), allowaddr);
+       COND_SET_VALUE(pcb->ki_conn, PTRTOUINT64(unp->unp_conn), allowaddr);
+       COND_SET_VALUE(pcb->ki_refs, PTRTOUINT64(unp->unp_refs), allowaddr);
+       COND_SET_VALUE(pcb->ki_nextref, PTRTOUINT64(unp->unp_nextref),
+           allowaddr);
 }
 
 static int