From owner-svn-src-all@freebsd.org Sun Nov 24 20:47:41 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 232951BA6A0; Sun, 24 Nov 2019 20:47:41 +0000 (UTC) (envelope-from wulf@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 47Lj0Y07XSz4S78; Sun, 24 Nov 2019 20:47:41 +0000 (UTC) (envelope-from wulf@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 DB1461CDD; Sun, 24 Nov 2019 20:47:40 +0000 (UTC) (envelope-from wulf@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id xAOKleaY045914; Sun, 24 Nov 2019 20:47:40 GMT (envelope-from wulf@FreeBSD.org) Received: (from wulf@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id xAOKleKU045912; Sun, 24 Nov 2019 20:47:40 GMT (envelope-from wulf@FreeBSD.org) Message-Id: <201911242047.xAOKleKU045912@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: wulf set sender to wulf@FreeBSD.org using -f From: Vladimir Kondratyev Date: Sun, 24 Nov 2019 20:47:40 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r355067 - head/sys/compat/linux X-SVN-Group: head X-SVN-Commit-Author: wulf X-SVN-Commit-Paths: head/sys/compat/linux X-SVN-Commit-Revision: 355067 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: Sun, 24 Nov 2019 20:47:41 -0000 Author: wulf Date: Sun Nov 24 20:47:40 2019 New Revision: 355067 URL: https://svnweb.freebsd.org/changeset/base/355067 Log: Linux epoll: Register events with zero event mask Such an events are legal and should be interpreted as EPOLLERR | EPOLLHUP. Register a disabled kqueue event in that case as we do not support EPOLLHUP yet. Required by Linux Steam client. PR: 240590 Reported by: Alex S Reviewed by: emaste MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D22516 Modified: head/sys/compat/linux/linux_event.c head/sys/compat/linux/linux_event.h Modified: head/sys/compat/linux/linux_event.c ============================================================================== --- head/sys/compat/linux/linux_event.c Sun Nov 24 20:44:14 2019 (r355066) +++ head/sys/compat/linux/linux_event.c Sun Nov 24 20:47:40 2019 (r355067) @@ -325,6 +325,11 @@ epoll_to_kevent(struct thread *td, int fd, struct epol EV_SET(kevent++, fd, EVFILT_WRITE, kev_flags, 0, 0, 0); ++(*nkevents); } + /* zero event mask is legal */ + if ((levents & (LINUX_EPOLL_EVRD | LINUX_EPOLL_EVWR)) == 0) { + EV_SET(kevent++, fd, EVFILT_READ, EV_ADD|EV_DISABLE, 0, 0, 0); + ++(*nkevents); + } if ((levents & ~(LINUX_EPOLL_EVSUP)) != 0) { p = td->td_proc; Modified: head/sys/compat/linux/linux_event.h ============================================================================== --- head/sys/compat/linux/linux_event.h Sun Nov 24 20:44:14 2019 (r355066) +++ head/sys/compat/linux/linux_event.h Sun Nov 24 20:47:40 2019 (r355067) @@ -45,10 +45,10 @@ #define LINUX_EPOLLONESHOT 1u<<30 #define LINUX_EPOLLET 1u<<31 -#define LINUX_EPOLL_EVRD (LINUX_EPOLLIN|LINUX_EPOLLRDNORM \ - |LINUX_EPOLLHUP|LINUX_EPOLLERR|LINUX_EPOLLPRI) +#define LINUX_EPOLL_EVRD (LINUX_EPOLLIN|LINUX_EPOLLRDNORM) #define LINUX_EPOLL_EVWR (LINUX_EPOLLOUT|LINUX_EPOLLWRNORM) #define LINUX_EPOLL_EVSUP (LINUX_EPOLLET|LINUX_EPOLLONESHOT \ + |LINUX_EPOLLHUP|LINUX_EPOLLERR|LINUX_EPOLLPRI \ |LINUX_EPOLL_EVRD|LINUX_EPOLL_EVWR|LINUX_EPOLLRDHUP) #define LINUX_EPOLL_CTL_ADD 1