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From 39456b9f6e692a2385bf1288a53d02dd9abac8d5 Mon Sep 17 00:00:00 2001
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From: Hendrik Brueckner <brueckner@redhat.com>
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Date: Tue, 11 Mar 2014 18:41:09 +0100
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Subject: [PATCH] getty: Start getty on 3270 terminals available on Linux on
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System z
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Add the first 3270 terminal device that is associated with the Linux preferred
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console to the list of virtualization consoles. This is required to
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automatically start a getty if the conmode=3270 kernel parameter is specified
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for Linux on z/VM instances. Note that a queued upstream patch also enable
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the 3270 terminal device if it is associated with the Linux preferred console.
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How
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To successfully start agetty on a 3270 terminal, a change in the agetty
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parameter order is required. Previously, agetty would started like this:
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/sbin/agetty --keep-baud 3270/tty1 115200,38400,9600 TERM
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The agetty program interprets the "3270/tty1" as baud rate and fails to start
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with the "bad speed: 3270/tty1" error message. Fixing this in agetty is more
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complex rather than reordering the command line parameters like this:
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/sbin/agetty --keep-baud 115200,38400,9600 3270/tty1 TERM
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According to agetty sources and "agetty --help", agetty accepts the "tty",
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"baudrate tty", and "tty baudrate" specifications.
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P.S. The "tty: Set correct tty name in 'active' sysfs attribute" introduces
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a change to display the terminal device which is associated with the
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Linux preferred console. This change helps to let systemd handle this
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particular case only. Without the changes of this commit, no additional
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3270 terminal device can be managed by systemd.
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https://git.kernel.org/cgit/linux/kernel/git/gregkh/tty.git/commit/?id=723abd87f6e536f1353c8f64f621520bc29523a3
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(cherry picked from commit fc6c7fe9becdd70ae6b671c396f2ad2db0b71cd7)
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Resolves: #1075729
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---
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rules/99-systemd.rules.in | 2 +-
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src/getty-generator/getty-generator.c | 3 ++-
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units/serial-getty@.service.m4 | 2 +-
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3 files changed, 4 insertions(+), 3 deletions(-)
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diff --git a/rules/99-systemd.rules.in b/rules/99-systemd.rules.in
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index 0471719..308a074 100644
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--- a/rules/99-systemd.rules.in
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+++ b/rules/99-systemd.rules.in
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@@ -7,7 +7,7 @@
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ACTION=="remove", GOTO="systemd_end"
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-SUBSYSTEM=="tty", KERNEL=="tty[a-zA-Z]*|hvc*|xvc*|hvsi*|ttysclp*|sclp_line*", TAG+="systemd"
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+SUBSYSTEM=="tty", KERNEL=="tty[a-zA-Z]*|hvc*|xvc*|hvsi*|ttysclp*|sclp_line*|3270/tty[0-9]*", TAG+="systemd"
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KERNEL=="vport*", TAG+="systemd"
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diff --git a/src/getty-generator/getty-generator.c b/src/getty-generator/getty-generator.c
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index 40374b5..5a1997f 100644
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--- a/src/getty-generator/getty-generator.c
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+++ b/src/getty-generator/getty-generator.c
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@@ -93,7 +93,8 @@ int main(int argc, char *argv[]) {
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"xvc0\0"
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"hvsi0\0"
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"sclp_line0\0"
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- "ttysclp0\0";
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+ "ttysclp0\0"
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+ "3270!tty1\0";
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int r = EXIT_SUCCESS;
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char *active;
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diff --git a/units/serial-getty@.service.m4 b/units/serial-getty@.service.m4
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index e94cdb4..4ac51e7 100644
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--- a/units/serial-getty@.service.m4
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+++ b/units/serial-getty@.service.m4
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@@ -22,7 +22,7 @@ Before=getty.target
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IgnoreOnIsolate=yes
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[Service]
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-ExecStart=-/sbin/agetty --keep-baud %I 115200,38400,9600 $TERM
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+ExecStart=-/sbin/agetty --keep-baud 115200,38400,9600 %I $TERM
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Type=idle
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Restart=always
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RestartSec=0
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