From owner-svn-src-stable-11@freebsd.org Fri Dec 9 21:07:04 2016 Return-Path: Delivered-To: svn-src-stable-11@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 EE9DFC6EE30; Fri, 9 Dec 2016 21:07:04 +0000 (UTC) (envelope-from emaste@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (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 A3C1038D; Fri, 9 Dec 2016 21:07:04 +0000 (UTC) (envelope-from emaste@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id uB9L73r1065766; Fri, 9 Dec 2016 21:07:03 GMT (envelope-from emaste@FreeBSD.org) Received: (from emaste@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id uB9L73vb065765; Fri, 9 Dec 2016 21:07:03 GMT (envelope-from emaste@FreeBSD.org) Message-Id: <201612092107.uB9L73vb065765@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: emaste set sender to emaste@FreeBSD.org using -f From: Ed Maste Date: Fri, 9 Dec 2016 21:07:03 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r309770 - stable/11/usr.bin/elfdump X-SVN-Group: stable-11 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-11@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for only the 11-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Dec 2016 21:07:05 -0000 Author: emaste Date: Fri Dec 9 21:07:03 2016 New Revision: 309770 URL: https://svnweb.freebsd.org/changeset/base/309770 Log: MFC r305951: elfdump: adjust stdout/stderr capabilities stdio uses fstat and the TIOCGETA ioctl. Also collapse the cap_rights_limit and new cap_ioctls_limit calls into one if statement. Errors here are not actionable by the user and distinguishing stdout from stderr doesn't really have value. Modified: stable/11/usr.bin/elfdump/elfdump.c Directory Properties: stable/11/ (props changed) Modified: stable/11/usr.bin/elfdump/elfdump.c ============================================================================== --- stable/11/usr.bin/elfdump/elfdump.c Fri Dec 9 21:00:16 2016 (r309769) +++ stable/11/usr.bin/elfdump/elfdump.c Fri Dec 9 21:07:03 2016 (r309770) @@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$"); #include #include #include +#include #include #define ED_DYN (1<<0) @@ -504,6 +505,7 @@ main(int ac, char **av) u_int64_t name; u_int64_t type; struct stat sb; + unsigned long cmd; u_int flags; Elf32_Ehdr *e; void *p; @@ -572,11 +574,13 @@ main(int ac, char **av) if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS) err(1, "unable to limit rights for %s", *av); close(STDIN_FILENO); - cap_rights_init(&rights, CAP_WRITE); - if (cap_rights_limit(STDOUT_FILENO, &rights) < 0 && errno != ENOSYS) - err(1, "unable to limit rights for stdout"); - if (cap_rights_limit(STDERR_FILENO, &rights) < 0 && errno != ENOSYS) - err(1, "unable to limit rights for stderr"); + cap_rights_init(&rights, CAP_FSTAT, CAP_IOCTL, CAP_WRITE); + cmd = TIOCGETA; /* required by isatty(3) in printf(3) */ + if ((cap_rights_limit(STDOUT_FILENO, &rights) < 0 && errno != ENOSYS) || + (cap_ioctls_limit(STDOUT_FILENO, &cmd, 1) < 0 && errno != ENOSYS) || + (cap_rights_limit(STDERR_FILENO, &rights) < 0 && errno != ENOSYS) || + (cap_ioctls_limit(STDERR_FILENO, &cmd, 1) < 0 && errno != ENOSYS)) + err(1, "unable to limit rights for stdout/stderr"); if (cap_enter() < 0 && errno != ENOSYS) err(1, "unable to enter capability mode"); e = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0);