Date: Fri, 05 Feb 2021 18:13:27 +0000 From: bugzilla-noreply@freebsd.org To: x11@FreeBSD.org Subject: maintainer-feedback requested: [Bug 253277] x11/xtrans: Don't unlink existing UNIX sockets => allows multiple X sessions from sddm Message-ID: <bug-253277-7141-MwgGRZVaAJ@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-253277-7141@https.bugs.freebsd.org/bugzilla/> References: <bug-253277-7141@https.bugs.freebsd.org/bugzilla/>
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Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-x11 (Nobody) <x11@FreeBSD.org> for maintainer-feedback: Bug 253277: x11/xtrans: Don't unlink existing UNIX sockets =3D> allows mult= iple X sessions from sddm https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253277 --- Description --- Patch that removes the `unlink` call before binding some UNIX socket. The problem with the existing approach is that, when Xorg is launched as `root`, it can always unlink existing sockets, which it does when no displa= y is explicitly specified and `-displayfd` is used. Moreover, the X server removes the UNIX socket when exiting (even in most abnormal cases). Typically, sddm exactly triggers the problem. So when you try to open anoth= er session through it, the first session's sockets are crushed and it becomes stale. I'm proposing the patch here since it is not practically useful on platforms that launch Xorg with an unprivileged user and because upstream seems inact= ive.
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