Date: Mon, 17 Jul 2017 06:10:54 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r321065 - stable/11/libexec/rtld-elf Message-ID: <201707170610.v6H6AsDr083804@repo.freebsd.org>
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Author: kib Date: Mon Jul 17 06:10:54 2017 New Revision: 321065 URL: https://svnweb.freebsd.org/changeset/base/321065 Log: MFC r320989: Language improvements. Modified: stable/11/libexec/rtld-elf/rtld.1 Directory Properties: stable/11/ (props changed) Modified: stable/11/libexec/rtld-elf/rtld.1 ============================================================================== --- stable/11/libexec/rtld-elf/rtld.1 Mon Jul 17 02:52:02 2017 (r321064) +++ stable/11/libexec/rtld-elf/rtld.1 Mon Jul 17 06:10:54 2017 (r321065) @@ -309,7 +309,7 @@ The syntax of the direct invocation is .Op Ar image arguments .Ed .Pp -The options are as follows: +The options are: .Bl -tag -width indent .It Fl f Ar fd File descriptor @@ -339,21 +339,22 @@ Ends the options. The argument following .Fl - -is interpreted as the path of binary to execute. +is interpreted as the path of the binary to execute. .El .Pp -To conform to user expectation to not break some naively restricted -execution environments, in the direct execution mode +In the direct execution mode, .Nm -emulates verification of the binary execute permission -for current user. +emulates verification of the binary execute permission for the +current user. +This is done to avoid breaking user expectations in naively restricted +execution environments. The verification only uses Unix .Dv DACs , ignores .Dv ACLs -and is racy by its nature. -The environments which rely on such restrictions are weak -and breakable on its own. +and is naturally prone to race conditions. +Environments which rely on such restrictions are weak +and breakable on their own. .Sh FILES .Bl -tag -width ".Pa /var/run/ld-elf32.so.hints" -compact .It Pa /var/run/ld-elf.so.hints
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