From owner-freebsd-emulation@freebsd.org Sun Mar 5 14:22:55 2017 Return-Path: Delivered-To: freebsd-emulation@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 00244CFA536 for ; Sun, 5 Mar 2017 14:22:54 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id DDD361C33 for ; Sun, 5 Mar 2017 14:22:54 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id DD36FCFA535; Sun, 5 Mar 2017 14:22:54 +0000 (UTC) Delivered-To: emulation@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id DCDFCCFA534 for ; Sun, 5 Mar 2017 14:22:54 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id CBF551C32 for ; Sun, 5 Mar 2017 14:22:54 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v25EMsbv003785 for ; Sun, 5 Mar 2017 14:22:54 GMT (envelope-from bugzilla-noreply@freebsd.org) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" From: bugzilla-noreply@freebsd.org To: emulation@FreeBSD.org Subject: maintainer-feedback requested: [Bug 217562] emulators/linux_base-c7: strange path truncating when exec'ing in bash scripts Date: Sun, 05 Mar 2017 14:22:54 +0000 X-Bugzilla-Type: request X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Individual Port(s) X-Bugzilla-Version: Latest X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: emulation@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? Message-ID: In-Reply-To: References: X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 05 Mar 2017 14:22:55 -0000 Matthieu Volat has reassigned Bugzilla Automation 's request for maintainer-feedback to emulation@FreeBSD.org: Bug 217562: emulators/linux_base-c7: strange path truncating when exec'ing = in bash scripts https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D217562 --- Description --- Hi, I found a strange issue when running linux's bash scripts: If you try to exec from a shell script (ran from /compat/linux/bin/bash) in= to another, the exec'ed script path will be truncated by 8 bytes from the left (and will obviously result in a failure). Simple demonstrator, file 1 is "test_linux_exec_bash.sh": #!/usr/bin/env bash echo $0 exec ./test_linux_exec_bash_2.sh file 2 is "test_linux_exec_bash_2.sh": #!/usr/bin/env bash echo $0 Then the result: % /compat/linux/bin/bash ./test_linux_exec_bash.sh ./test_linux_exec_bash.sh /compat/linux/usr/bin/env: zhe/tmp/test_linux_exec_bash_2.sh: No such fil= e or directory This will not happen if the 1st script try to exec into a binary (/compat/linux/usr/bin/env issue??) I've ran the demo through ktrace, but it revealed nothing really interestin= g: at some point after execing into env, the path is corrupted... valgrind can= 't be run on linux binaries, so I did not found anything on that front... At that point, I'm failing to see what is going wrong here. Any ideas? Thanks