On Mon, 07 Apr 2025 10:38:52 -0400
Andrew Schulman wrote:
> > On Sat, 05 Apr 2025 07:02:08 -0400
> > Andrew Schulman wrote:
> > > screen 5.0.0 now includes calls to TIOCCONS, like this:
> > >
> > > ioctl(consredirfd[1], TIOCCONS, (char *)&on)
> > >
> > > Since TIOCCONS seems not to be present in Cygwin, can someone please
> > > suggest
> > > what the equivalent would be?
> >
> > There is not default console on cygwin such as /dev/tty0 or /dev/console
> > on Linux. cygwin has /dev/console but it is an alias of current console
> > device such as /dev/cons0.
> >
> > So we cannot implement TIOCCONS in cygwin.
> >
> > What about commenting out the body of TtyGrabConsole() like:
> ...
> > Does something behaves wrong with that?
>
> Thanks. That's a good idea. Unfortunately when I try it screen hangs,
> unresponsive. Same result if I just comment out the call to ioctl().
>
> That might be because of the missing ioctl(), or it might be because of some
> other change since screen 4.9.1. Not sure. So I think my next stop is to ask
> the screen developers.
Hmm, in my environment, attached seem to work for me.
--
Takashi Yano <takashi.y...@nifty.ne.jp>
#
# cygport build script for screen
#
NAME=screen
VERSION=5.0.0
RELEASE=1
# Packaging
CATEGORY="Utils"
SUMMARY="Run separate screens on a single terminal"
DESCRIPTION="Screen is a full-screen window manager that multiplexes a physical
terminal between several processes, typically interactive shells. You can
switch between windows, create new windows with other programs in them, kill
the current window, view a list of the active windows, turn output logging on
and off, copy text between windows, and view scrollback history. Programs
continue to run when the screen session is detached from the terminal, so you
can log in again later and continue working."
HOMEPAGE="https://www.gnu.org/software/screen/";
LICENSE=GPL-3.0-only
# Sources
#GIT_URI='git://git.savannah.gnu.org/screen.git'
#inherit git
#SRC_DIR=screen/src
SRC_URI="http://ftp.gnu.org/gnu/screen/screen-${VERSION}.tar.gz";
PATCH_URI="
screen-etcscreenrc.patch
screen-peercred.patch
screen-no-TIOCCONS.patch
"
# screen-install-exe.patch
CYGPORT_USE_UNSTABLE_API=1
src_unpack_hook ()
{
inform "Copying in CYGWIN-PATCHES"
cp -av ${top}/CYGWIN-PATCHES "${S/\/src\///origsrc/}"
}
# Build
BUILD_REQUIRES="
libcrypt-devel
libncurses-devel
"
CYGCONF_ARGS="--with-sys-screenrc=/etc/screenrc --enable-colors256
--disable-pam"
src_compile() {
cd ${S}
cygautoreconf
lndirs
cd ${B}
cygconf
cygmake
}
src_install()
{
dodir /usr/share/doc/${PN}
dodir /usr/share/doc/Cygwin
cd "$B"
cyginstall
insinto /etc
newins "$S"/etc/etcscreenrc screenrc
make_etc_defaults /etc/screenrc
exeinto /usr/share/screen
doexe "$S"/CYGWIN-PATCHES/test/256colors.pl
dosym ../Cygwin/${PN}.README /usr/share/doc/${PN}/README.Cygwin
}
diff -ur screen-4.0.3.orig/etc/etcscreenrc screen-4.0.3/etc/etcscreenrc
--- screen-4.0.3.orig/etc/etcscreenrc 2003-12-05 08:46:13.000000000 -0500
+++ screen-4.0.3/etc/etcscreenrc 2007-07-06 16:17:38.140625000 -0400
@@ -9,6 +9,7 @@
#startup_message off
#defflow on # will force screen to process ^S/^Q
+defflow off # leave this off, so we can save in *emacs
deflogin on
#autodetach off
@@ -65,6 +66,9 @@
termcap xterm 'is=\E[r\E[m\E[2J\E[H\E[?7h\E[?1;4;6l'
terminfo xterm 'is=\E[r\E[m\E[2J\E[H\E[?7h\E[?1;4;6l'
+# Set the hardstatus prop on gui terms to set the titlebar/icon title
+termcapinfo xterm*|rxvt*|kterm*|Eterm*|cygwin hs:ts=\E]0;:fs=\007:ds=\E]0;\007
+
#
# Do not use xterms alternate window buffer.
# This one would not add lines to the scrollback buffer.
--- origsrc/screen-5.0.0/socket.c 2024-08-29 04:55:03.000000000 +0900
+++ src/screen-5.0.0/socket.c 2025-04-06 01:06:10.859252400 +0900
@@ -1221,7 +1230,11 @@ static bool CheckPassword(const char *pa
Panic(0, "\r\ncan't get root uid/gid\r\n");
#ifndef _PWD_H
+#ifdef __CYGWIN__
+ p = getpwnam(ppp->pw_name);
+#else
p = getpwnam_shadow(ppp->pw_name);
+#endif
#else
p = getspnam(ppp->pw_name);
#endif
--- origsrc/screen-5.0.0/tty.c 2024-08-29 04:55:03.000000000 +0900
+++ src/screen-5.0.0/tty.c 2025-04-06 00:57:11.489640800 +0900
@@ -802,6 +802,7 @@ static void consredir_readev_fn(Event *
int TtyGrabConsole(int fd, bool on, char *rc_name)
{
+#ifndef __CYGWIN__
Display *d;
#ifdef SRIOCSREDIR
int cfd;
@@ -880,6 +881,7 @@ int TtyGrabConsole(int fd, bool on, char
consredir_ev.type = EV_READ;
consredir_ev.handler = consredir_readev_fn;
evenq(&consredir_ev);
+#endif
return 0;
}
--- origsrc/screen-5.0.0/socket.c 2024-08-29 04:55:03.000000000 +0900
+++ src/screen-5.0.0/socket.c 2025-04-06 01:06:10.859252400 +0900
@@ -361,6 +361,9 @@ int MakeServerSocket(void)
a.sun_path[ARRAY_SIZE(a.sun_path) - 1] = 0;
xseteuid(real_uid);
xsetegid(real_gid);
+#ifdef __CYGWIN__
+ setsockopt(s, SOL_SOCKET, SO_PEERCRED, NULL, 0);
+#endif
if (connect(s, (struct sockaddr *)&a, strlen(SocketPath) + 2) != -1) {
if (quietflag) {
Kill(D_userpid, SIG_BYE);
@@ -390,6 +393,9 @@ int MakeServerSocket(void)
chmod(SocketPath, SOCKMODE);
if (chown(SocketPath, real_uid, real_gid))
Panic(errno, "chown");
+#ifdef __CYGWIN__
+ setsockopt(s, SOL_SOCKET, SO_PEERCRED, NULL, 0);
+#endif
if (listen(s, 5) == -1)
Panic(errno, "listen");
#ifdef F_SETOWN
@@ -412,6 +418,9 @@ int MakeClientSocket(int err)
a.sun_path[ARRAY_SIZE(a.sun_path) - 1] = 0;
xseteuid(real_uid);
xsetegid(real_gid);
+#ifdef __CYGWIN__
+ setsockopt(s, SOL_SOCKET, SO_PEERCRED, NULL, 0);
+#endif
if (connect(s, (struct sockaddr *)&a, strlen(SocketPath) + 2) == -1) {
if (err)
Msg(errno, "%s: connect", SocketPath);
@@ -1221,7 +1230,11 @@ static bool CheckPassword(const char *pa
Panic(0, "\r\ncan't get root uid/gid\r\n");
#ifndef _PWD_H
+#ifdef __CYGWIN__
+ p = getpwnam(ppp->pw_name);
+#else
p = getpwnam_shadow(ppp->pw_name);
+#endif
#else
p = getspnam(ppp->pw_name);
#endif
