Bug 194233

Summary:	sysctl -a shouldn't be listing kern.msgbuf
Product:	Base System	Reporter:	wkoszek
Component:	bin	Assignee:	Fernando Apesteguía <fernape>
Status:	Closed Not A Bug
Severity:	Affects Only Me	CC:	fernape
Priority:	---
Version:	10.0-RELEASE
Hardware:	Any
OS:	Any

Description wkoszek 2014-10-07 20:55:23 UTC

I use FreeBSD 10.0 release. For reviewing sysctl settings I typically use:

sysctl -a

It always showed the presence of ``kern.msgbuf'', but it never listed its content. I verified with 9.1-STABLE.

In FreeBSD 10 kern.msgbuf's content is shown. As a result of showing some garbage from prior invocations of ncurses-based programs sysctl -a causes my console to get stuck.

I must do 'reset' to unstuck it.

I think kern.msgbuf should be hidden from sysctl -a.

Comment 1 Fernando Apesteguía freebsd_committer

2023-01-24 13:24:44 UTC

sysctl -a always shows both variable names and values. It might or might not show garbage depending on many factors and it might or might not affect the console depending on many factors too.

The value can be omitted using -N when doing sysctl -a