From owner-freebsd-bugs@freebsd.org Sun Sep 15 07:46:39 2019 Return-Path: Delivered-To: freebsd-bugs@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 BB90DE4CB8 for ; Sun, 15 Sep 2019 07:46:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 46WLzg3pkYz453w for ; Sun, 15 Sep 2019 07:46:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 80D36E4CB5; Sun, 15 Sep 2019 07:46:39 +0000 (UTC) Delivered-To: bugs@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 80906E4CB3 for ; Sun, 15 Sep 2019 07:46:39 +0000 (UTC) (envelope-from bugzilla-noreply@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 46WLzg27qyz453t for ; Sun, 15 Sep 2019 07:46:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (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 29F795109 for ; Sun, 15 Sep 2019 07:46:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x8F7kdHE076876 for ; Sun, 15 Sep 2019 07:46:39 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x8F7kdTM076875 for bugs@FreeBSD.org; Sun, 15 Sep 2019 07:46:39 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 240590] Linuxulator: EPOLLONESHOT is broken Date: Sun, 15 Sep 2019 07:46:38 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: iwtcex@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Sep 2019 07:46:39 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D240590 Bug ID: 240590 Summary: Linuxulator: EPOLLONESHOT is broken Product: Base System Version: 12.0-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: iwtcex@gmail.com Here's a reproducer: #include #include #include #include #include int main() { int epfd =3D epoll_create(8); assert(epfd); struct epoll_event event =3D { .events =3D EPOLLOUT | EPOLLONESHOT, .data =3D 0 }; int err1 =3D epoll_ctl(epfd, EPOLL_CTL_ADD, STDIN_FILENO, &event); assert(err1 =3D=3D 0); struct epoll_event events[1]; int n =3D epoll_wait(epfd, events, 1, -1); assert(n > 0); int err2 =3D epoll_ctl(epfd, EPOLL_CTL_MOD, STDIN_FILENO, &event); if (err2 =3D=3D 0) { printf("ok\n"); } else { perror("EPOLL_CTL_MOD failed"); } return 0; } This program runs fine on Linux, while on FreeBSD it prints "EPOLL_CTL_MOD failed: No such file or directory". The man page on kevent says about EV_ONESHOT "After the user retrieves the event from the kqueue, it is delet= ed", so presumably that's why. --=20 You are receiving this mail because: You are the assignee for the bug.=