import xorg-x11-xtrans-devel-1.4.0-1.el8_6.2
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From 8302f576f8b41f9aa95b091a9ef001ab5ddc2ef5 Mon Sep 17 00:00:00 2001
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From: Ray Strode <rstrode@redhat.com>
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Date: Fri, 6 May 2022 14:23:59 -0400
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Subject: [PATCH] Automatically disable inet6 transport if ipv6 is disabled on
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machine
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If a machine is booted with ipv6.disable=1, trying to bind to an
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AF_INET6 socket will fail with AFNOSUPPORT.
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The tcp transport automatically falls back to ipv4 in this case, but
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the more specific inet6 transport just fails.
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This failure leads to MakeAllCOTSServerListeners returning a partial
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success.
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Unfortunately, the X server can't really contiue with partial successes
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from this function if -displayfd is in use, since that would, in other
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cases, potentially lead to the -displayfd electing a display number that
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is potentially partially in use by a rogue program.
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This commit addresses the issue by automatically disabling transports
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when they fail with AFNOSUPPORT, leading them to get ignored, rather than
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proceeding and ultimately returning from MakeAllCOTSServerListerns with
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partial=TRUE.
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---
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Xtranssock.c | 15 +++++++++++----
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1 file changed, 11 insertions(+), 4 deletions(-)
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diff --git a/Xtranssock.c b/Xtranssock.c
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index 632c1b5..2c80a5c 100644
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--- a/Xtranssock.c
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+++ b/Xtranssock.c
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@@ -584,66 +584,73 @@ TRANS(SocketOpenCOTSClient) (Xtransport *thistrans, const char *protocol,
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const char *host, const char *port)
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{
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return TRANS(SocketOpenCOTSClientBase)(
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thistrans->TransName, protocol, host, port, -1);
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}
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#endif /* TRANS_CLIENT */
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#ifdef TRANS_SERVER
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static XtransConnInfo
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TRANS(SocketOpenCOTSServer) (Xtransport *thistrans, const char *protocol,
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const char *host, const char *port)
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{
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XtransConnInfo ciptr;
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int i = -1;
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prmsg (2,"SocketOpenCOTSServer(%s,%s,%s)\n", protocol, host, port);
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SocketInitOnce();
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while ((i = TRANS(SocketSelectFamily) (i, thistrans->TransName)) >= 0) {
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if ((ciptr = TRANS(SocketOpen) (
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i, Sockettrans2devtab[i].devcotsname)) != NULL)
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break;
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}
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if (i < 0) {
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- if (i == -1)
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- prmsg (1,"SocketOpenCOTSServer: Unable to open socket for %s\n",
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- thistrans->TransName);
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- else
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+ if (i == -1) {
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+ if (errno == EAFNOSUPPORT) {
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+ thistrans->flags |= TRANS_NOLISTEN;
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+ prmsg (1,"SocketOpenCOTSServer: Socket for %s unsupported on this system.\n",
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+ thistrans->TransName);
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+ } else {
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+ prmsg (1,"SocketOpenCOTSServer: Unable to open socket for %s\n",
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+ thistrans->TransName);
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+ }
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+ } else {
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prmsg (1,"SocketOpenCOTSServer: Unable to determine socket type for %s\n",
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thistrans->TransName);
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+ }
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return NULL;
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}
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/*
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* Using this prevents the bind() check for an existing server listening
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* on the same port, but it is required for other reasons.
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*/
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#ifdef SO_REUSEADDR
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/*
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* SO_REUSEADDR only applied to AF_INET && AF_INET6
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*/
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if (Sockettrans2devtab[i].family == AF_INET
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#if defined(IPv6) && defined(AF_INET6)
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|| Sockettrans2devtab[i].family == AF_INET6
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#endif
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)
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{
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int one = 1;
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setsockopt (ciptr->fd, SOL_SOCKET, SO_REUSEADDR,
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(char *) &one, sizeof (int));
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}
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#endif
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#ifdef IPV6_V6ONLY
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if (Sockettrans2devtab[i].family == AF_INET6)
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{
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int one = 1;
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setsockopt(ciptr->fd, IPPROTO_IPV6, IPV6_V6ONLY, &one, sizeof(int));
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}
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--
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2.35.1
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@ -8,7 +8,7 @@
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Summary: X.Org X11 developmental X transport library
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Name: xorg-x11-xtrans-devel
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Version: 1.4.0
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Release: 1%{?dist}
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Release: 1%{?dist}.2
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License: MIT
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Group: System Environment/Libraries
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URL: http://www.x.org
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@ -19,6 +19,10 @@ Source0: https://xorg.freedesktop.org/archive/individual/lib/xtrans-%{version}.t
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# Fedora specific patch
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Patch1: xtrans-1.0.3-avoid-gethostname.patch
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# ipv6 fix
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Patch2: 0001-Automatically-disable-inet6-transport-if-ipv6-is-dis.patch
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BuildRequires: git
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BuildRequires: pkgconfig
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BuildRequires: xorg-x11-util-macros
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@ -26,8 +30,7 @@ BuildRequires: xorg-x11-util-macros
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X.Org X11 developmental X transport library
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%prep
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%setup -q -n xtrans-%{version}
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%patch1 -p1 -b .my-name-is-unix
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%autosetup -S git -n xtrans-%{version}
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%build
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# yes, this looks horrible, but it's to get the .pc file in datadir
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@ -53,6 +56,14 @@ install -pm 644 AUTHORS ChangeLog COPYING README.md $RPM_BUILD_ROOT%{_pkgdocdir}
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%{_datadir}/pkgconfig/xtrans.pc
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%changelog
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* Thu Jun 09 2022 Ray Strode <rstrode@redhat.com> - 1.4.0-1.2
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- Actually apply the ipv6.disable support
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Related: #2090323
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* Fri May 06 2022 Ray Strode <rstrode@redhat.com> - 1.4.0-1.1
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- Support ipv6.disable=1
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Related: #2090323
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* Tue Jun 02 2020 Adam Jackson <ajax@redhat.com> - 1.4.0-1
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- xtrans 1.4.0
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