Run anaconda inside tmux

Having a shell on tty2 or hvc1 is convenient.. if you have tty2 or hvc1.
But not everyone does - think s390, or POWER, or remote virt guests.

Instead, let's run anaconda inside a tmux session, with windows
pre-configured with a shell, anaconda.log, program.log, and storage.log.

We set this up by using two services: anaconda.service, and
anaconda-tmux@.service.

anaconda.service starts anaconda (and starts watching the logs) inside a
detached tmux session, on screen 1. It also starts a shell on screen 2,
and 'tail -F' on anaconda.log, storage.log, and program.log on screens
3, 4, and 5.

anaconda-tmux@.service will be instantiated on the default console
(tty1, hvc0, ttyS0, whatever) and connect to the running tmux session,
which will show screen 1 - and thus the text UI (if any) appears.

Exiting tmux just restarts anaconda-tmux@.service, which reconnects to
the existing session, so you can't accidentally kill the installer by
leaving tmux.

8 files changed, 41 insertions, 11 deletions

diff --git a/data/Makefile.am b/data/Makefile.am
index cc82ae5d5..570828195 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -29,6 +29,9 @@ langdir               = $(datadir)/$(PACKAGE_NAME)
 lang_DATA             = lang-names
 dist_lang_DATA        = lang-table
 
+tmuxdir               = $(datadir)/$(PACKAGE_NAME)
+dist_tmux_DATA        = tmux.conf
+
 if IS_S390
 shareddir             = $(datadir)/$(PACKAGE_NAME)
 dist_shared_SCRIPTS   = linuxrc.s390
diff --git a/data/systemd/Makefile.am b/data/systemd/Makefile.am
index 8579ece04..96bd8f0cb 100644
--- a/data/systemd/Makefile.am
+++ b/data/systemd/Makefile.am
@@ -20,8 +20,9 @@
 systemddir = /lib/systemd/system
 generatordir = /lib/systemd/system-generators
 
-dist_systemd_DATA = anaconda@.service \
+dist_systemd_DATA = anaconda.service \
 		    anaconda.target \
+		    anaconda-tmux@.service \
 		    anaconda-shell@.service \
 		    instperf.service \
 		    anaconda-sshd.service \
diff --git a/data/systemd/anaconda-cleanup-initramfs.service b/data/systemd/anaconda-cleanup-initramfs.service
index 1d10bfc7a..cc493572d 100644
--- a/data/systemd/anaconda-cleanup-initramfs.service
+++ b/data/systemd/anaconda-cleanup-initramfs.service
@@ -1,6 +1,6 @@
 [Unit]
 Description=Clean Up Initramfs
-Before=anaconda@.service
+Before=anaconda.service
 ConditionPathIsDirectory=/run/initramfs/usr/lib/modules
 
 [Service]
diff --git a/data/systemd/anaconda-generator b/data/systemd/anaconda-generator
index cb4704023..71e35e718 100755
--- a/data/systemd/anaconda-generator
+++ b/data/systemd/anaconda-generator
@@ -25,7 +25,7 @@ done
 consoletty="$tty"
 
 # put anaconda on the real console
-service_on_tty anaconda@.service $consoletty
+service_on_tty anaconda-tmux@.service $consoletty
 
 # put a shell on tty2 and the first virtualization console we find
 for tty in tty2 hvc0 hvc1 xvc0 hvsi0 hvsi1 hvsi2; do
diff --git a/data/systemd/anaconda-tmux@.service b/data/systemd/anaconda-tmux@.service
new file mode 100644
index 000000000..0b8376588
--- /dev/null
+++ b/data/systemd/anaconda-tmux@.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=Anaconda Text Console
+Requires=anaconda.service
+After=anaconda.target anaconda.service
+
+[Service]
+Type=simple
+WorkingDirectory=/root
+Environment=LANG=en_US.UTF-8
+ExecStartPre=/usr/bin/echo -e \033%G
+ExecStart=/usr/bin/tmux -u attach -t anaconda
+StandardInput=tty-force
+TTYPath=/dev/%I
+TTYReset=yes
+Restart=always
diff --git a/data/systemd/anaconda@.service b/data/systemd/anaconda.service
index 03ecabb17..5629e00a8 100644
--- a/data/systemd/anaconda@.service
+++ b/data/systemd/anaconda.service
@@ -3,11 +3,7 @@ Description=Anaconda
 After=anaconda.target
 
 [Service]
-Environment=HOME=/root MALLOC_CHECK_=2 MALLOC_PERTURB_=204 PATH=/usr/bin:/bin:/sbin:/usr/sbin:/mnt/sysimage/bin:/mnt/sysimage/usr/bin:/mnt/sysimage/usr/sbin:/mnt/sysimage/sbin
-Type=oneshot
+Type=forking
+Environment=HOME=/root MALLOC_CHECK_=2 MALLOC_PERTURB_=204 PATH=/usr/bin:/bin:/sbin:/usr/sbin:/mnt/sysimage/bin:/mnt/sysimage/usr/bin:/mnt/sysimage/usr/sbin:/mnt/sysimage/sbin LANG=en_US.UTF-8
 WorkingDirectory=/root
-ExecStart=/usr/sbin/anaconda
-StandardInput=tty-force
-TTYPath=/dev/%I
-TTYReset=yes
-TimeoutSec=0
+ExecStart=/usr/bin/tmux -u -f /etc/anaconda-tmux.conf start
diff --git a/data/systemd/anaconda.target b/data/systemd/anaconda.target
index 9a95c6615..597adfde3 100644
--- a/data/systemd/anaconda.target
+++ b/data/systemd/anaconda.target
@@ -3,7 +3,6 @@ Description=Anaconda System Services
 Requires=basic.target
 After=basic.target
 AllowIsolate=yes
-Before=anaconda@.service
 Wants=anaconda-cleanup-initramfs.service
 Wants=instperf.service
 Wants=rsyslog.service
diff --git a/data/tmux.conf b/data/tmux.conf
new file mode 100644
index 000000000..3639fcbec
--- /dev/null
+++ b/data/tmux.conf
@@ -0,0 +1,16 @@
+# tmux.conf for the anaconda environment
+set-option -s exit-unattached off
+set-option -g base-index 1
+
+new-session -s anaconda -n main "anaconda"
+
+set-option set-remain-on-exit on
+set-option status-right ""
+set-option status-right-length 0
+
+new-window -d -n shell          "bash --login"
+new-window -d -n log            "tail -F /tmp/anaconda.log"
+new-window -d -n storage-log    "tail -F /tmp/storage.log"
+new-window -d -n program-log    "tail -F /tmp/program.log"
+
+detach-client -s anaconda