Date: Thu, 21 Jul 2022 23:57:50 GMT From: Mateusz Piotrowski <0mp@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 83b8f6f7f0a0 - stable/13 - protect.1: Document that protect(1) does not work in jails Message-ID: <202207212357.26LNvoJR035274@gitrepo.freebsd.org>
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The branch stable/13 has been updated by 0mp (doc, ports committer): URL: https://cgit.FreeBSD.org/src/commit/?id=83b8f6f7f0a0a5e963683756976e4dded07e192a commit 83b8f6f7f0a0a5e963683756976e4dded07e192a Author: Mateusz Piotrowski <0mp@FreeBSD.org> AuthorDate: 2022-07-11 22:43:27 +0000 Commit: Mateusz Piotrowski <0mp@FreeBSD.org> CommitDate: 2022-07-21 23:56:29 +0000 protect.1: Document that protect(1) does not work in jails The reason is that in order to protect a process procctl(2) needs the PRIV_VM_MADV_PROTECT privilege, which is currently denied in jails (see kern_jail.c). MFC after: 1 week (cherry picked from commit 6452fb1e87ed9d00b52fa1e63e7c3a7516c9586c) --- usr.bin/protect/protect.1 | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/usr.bin/protect/protect.1 b/usr.bin/protect/protect.1 index 87a8169b1885..f67a8d9b59ea 100644 --- a/usr.bin/protect/protect.1 +++ b/usr.bin/protect/protect.1 @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd July 7, 2022 +.Dd July 12, 2022 .Dt PROTECT 1 .Os .Sh NAME @@ -112,6 +112,24 @@ bit is set to 1. All children of this process will also be protected if .Nm PI bit is set to 1. +.Sh DIAGNOSTICS +.Bl -diag +.It "protect: procctl: Operation not permitted" +The +.Nm +command does not have the required permissions to protect selected processes. +There are many reasons why this could be the case, e.g.: +.Bl -dash +.It +.Nm +is not executed by root. +.It +.Nm +is executed inside a +.Xr jail 8 , +which is not supported at the moment. +.El +.El .Sh SEE ALSO .Xr ps 1 , .Xr procctl 2 ,
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