From owner-svn-src-all@freebsd.org Sat Jul 6 01:00:12 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 415A215D9001; Sat, 6 Jul 2019 01:00:12 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id BC3DD6B462; Sat, 6 Jul 2019 01:00:11 +0000 (UTC) (envelope-from markj@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 mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 959751A422; Sat, 6 Jul 2019 01:00:11 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x6610BTq052172; Sat, 6 Jul 2019 01:00:11 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x6610Bfd052171; Sat, 6 Jul 2019 01:00:11 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201907060100.x6610Bfd052171@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston Date: Sat, 6 Jul 2019 01:00:11 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r349775 - stable/12/sys/kern X-SVN-Group: stable-12 X-SVN-Commit-Author: markj X-SVN-Commit-Paths: stable/12/sys/kern X-SVN-Commit-Revision: 349775 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: BC3DD6B462 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.94 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.95)[-0.945,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Jul 2019 01:00:12 -0000 Author: markj Date: Sat Jul 6 01:00:11 2019 New Revision: 349775 URL: https://svnweb.freebsd.org/changeset/base/349775 Log: MFC r349547: Use a consistent snapshot of the fd's rights in fget_mmap(). Modified: stable/12/sys/kern/kern_descrip.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/kern/kern_descrip.c ============================================================================== --- stable/12/sys/kern/kern_descrip.c Sat Jul 6 00:59:46 2019 (r349774) +++ stable/12/sys/kern/kern_descrip.c Sat Jul 6 01:00:11 2019 (r349775) @@ -2776,6 +2776,7 @@ fget_mmap(struct thread *td, int fd, cap_rights_t *rig if (maxprotp != NULL) *maxprotp = VM_PROT_ALL; #else + cap_rights_t fdrights; struct filedesc *fdp = td->td_proc->p_fd; seq_t seq; @@ -2784,15 +2785,18 @@ fget_mmap(struct thread *td, int fd, cap_rights_t *rig error = _fget(td, fd, fpp, 0, rightsp, &seq); if (error != 0) return (error); - /* - * If requested, convert capability rights to access flags. - */ if (maxprotp != NULL) - *maxprotp = cap_rights_to_vmprot(cap_rights(fdp, fd)); + fdrights = *cap_rights(fdp, fd); if (!fd_modified(fdp, fd, seq)) break; fdrop(*fpp, td); } + + /* + * If requested, convert capability rights to access flags. + */ + if (maxprotp != NULL) + *maxprotp = cap_rights_to_vmprot(&fdrights); #endif return (error); }