commit 482c53e

init: import from derivelinux/situation@a656e093aa

 1@@ -0,0 +1,20 @@
 2+#!/bin/sh
 3+set -x
 4+
 5+# install.sh for installing to other systems
 6+
 7+sh -n ./situation || {
 8+	echo 'situation failed noexec. not installing'
 9+	exit 1
10+}
11+
12+sh -n ./sctl|| {
13+	echo 'spectacle failed noexec. not installing'
14+	exit 1
15+}
16+
17+cp ./situation /bin/situation
18+ln -sf /bin/situation /bin/init
19+ln -sf /bin/situation /sbin/init
20+
21+cp ./sctl /bin/sctl

  1@@ -0,0 +1,240 @@
  2+#!/bin/sh
  3+# /bin/situation — dèrive init and service manager
  4+
  5+PATH='/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin'
  6+export PATH
  7+
  8+# source system shell configuration
  9+if [ -f /etc/profile ]; then ENV="/etc/profile" 
 10+elif [ -f /etc/shrc ]; then ENV="/etc/shrc" 
 11+fi
 12+export ENV
 13+
 14+echo 'checking situation'
 15+
 16+# failsafe incase situation is broken
 17+sh -n $0 || {
 18+	echo 'situation failed noexec. dropping to emergency shell'
 19+	exec /bin/sh
 20+}
 21+
 22+echo "starting situation"
 23+
 24+echo "mounting fs"
 25+mount -n -t proc none /proc || {
 26+    echo "failed to mount /proc. dropping to emergency shell"
 27+    exec /bin/sh
 28+}
 29+
 30+if ! mountpoint -q /sys 2>/dev/null; then
 31+    mount -n -t sysfs none /sys || {
 32+        echo "failed to mount /sys. dropping to emergency shell"
 33+        exec /bin/sh
 34+    }
 35+fi
 36+
 37+if ! mountpoint -q /dev 2>/dev/null; then
 38+    mount -n -t devtmpfs none /dev 2>/dev/null || {
 39+        mount -n -t tmpfs dev /dev
 40+        # Create essential device nodes if devtmpfs failed
 41+        [ -c /dev/null ] || mknod -m 666 /dev/null c 1 3
 42+        [ -c /dev/zero ] || mknod -m 666 /dev/zero c 1 5
 43+        [ -c /dev/console ] || mknod -m 600 /dev/console c 5 1
 44+        [ -c /dev/tty ] || mknod -m 666 /dev/tty c 5 0
 45+    }
 46+fi
 47+
 48+
 49+# setup boot logging now that /dev exists
 50+mkdir -p /var/log 2>/dev/null
 51+# if [ -d /dev/fd ] && [ -w /var/log ]; then
 52+#     exec 1> >(tee -a /var/log/boot 2>/dev/null) 2>&1
 53+# fi
 54+
 55+# create and mount additional essential filesystems
 56+mkdir -p /dev/pts /dev/shm /run /tmp
 57+mount -n -t devpts devpts /dev/pts 2>/dev/null || true
 58+mount -n -t tmpfs tmpfs /dev/shm 2>/dev/null || true
 59+mount -n -t tmpfs tmpfs /run 2>/dev/null || true
 60+mount -n -t tmpfs tmpfs /tmp 2>/dev/null || true
 61+
 62+# create utmp directory and file for login tracking
 63+mkdir -p /var/run /var/log
 64+touch /var/run/utmp /var/log/wtmp
 65+chmod 664 /var/run/utmp /var/log/wtmp
 66+chown root:root /var/run/utmp /var/log/wtmp
 67+
 68+# remount root filesystem as read-write
 69+echo "remounting root fs"
 70+mount -n -o remount,rw / 2>/dev/null
 71+
 72+# basic system setup
 73+echo "configuring system"
 74+
 75+# Read hostname from /etc/hostname if it exists
 76+if [ -f /etc/hostname ]; then
 77+    hostname "$(cat /etc/hostname)"
 78+fi
 79+
 80+echo "/bin/sh" > /proc/sys/kernel/modprobe  # disable modprobe
 81+echo 0 > /proc/sys/kernel/printk
 82+
 83+# Allow unprivileged users to use ping via ICMP sockets (no setuid needed)
 84+# This enables ping for all users without requiring capabilities or setuid
 85+if [ -w /proc/sys/net/ipv4/ping_group_range ]; then
 86+    echo "0 2147483647" > /proc/sys/net/ipv4/ping_group_range
 87+fi
 88+
 89+# setup device manager (if available)
 90+echo 'setting up devices'
 91+if command -v udevd >/dev/null 2>&1; then
 92+    if command -v udevadm >/dev/null 2>&1; then
 93+        udevd --daemon
 94+        udevadm trigger --action=add
 95+        udevadm trigger --type=subsystems --action=add
 96+        udevadm trigger --type=devices --action=add
 97+        udevadm settle
 98+    else echo 'udevadm not found'
 99+    fi
100+elif command -v smdev >/dev/null 2>&1; then
101+    [ -f /proc/sys/kernel/hotplug ] && echo /bin/smdev > /proc/sys/kernel/hotplug
102+    smdev -s
103+elif command -v mdev >/dev/null 2>&1; then
104+    [ -f /proc/sys/kernel/hotplug ] && echo /bin/mdev > /proc/sys/kernel/hotplug
105+    mdev -s
106+else
107+	echo 'no device manager'
108+fi
109+
110+# fix device perms after s/mdev populates
111+chmod 666 /dev/null /dev/zero /dev/tty 2>/dev/null
112+chmod 620 /dev/ttyS0 /dev/tty1 2>/dev/null
113+
114+# bring up loopback interface
115+if command -v ip >/dev/null 2>&1; then
116+    ip link set lo up
117+fi
118+
119+# start services in sorted order with pid tracking
120+echo "starting services"
121+mkdir -p /etc/sv/pid
122+if [ -d /etc/sv/on ]; then
123+    for svc in $(ls /etc/sv/on/ 2>/dev/null | sort); do
124+        svc_path="/etc/sv/on/$svc"
125+        [ -x "$svc_path" ] || continue
126+        # Get the actual service name from symlink target
127+        svc_name=$(basename "$(readlink "$svc_path")")
128+        echo "starting $svc_name"
129+        "$svc_path" &
130+        echo $! > "/etc/sv/pid/$svc_name.pid"
131+    done
132+fi
133+
134+# run rc.local
135+[ -x /etc/rc.local ] && {
136+	echo 'running rc.local'
137+	/etc/rc.local
138+}
139+
140+echo 'killing device managers'
141+{
142+	pkill udevd
143+	pkill smdev
144+	pkill mdev
145+}>/dev/null 2>&1
146+
147+# spawn console on serial and VGA with respawning
148+echo "spawning getty"
149+
150+# wait a moment for devices to settle
151+sleep 1
152+
153+if command -v getty >/dev/null 2>&1; then
154+    # BusyBox getty: getty [OPTIONS] BAUD_RATE TTY [TERMTYPE]
155+    # Serial console (for -nographic) - respawn if dies
156+    (
157+        while :; do
158+            setsid getty -L 115200 ttyS0 2>&1
159+            sleep 1  # prevent rapid respawn on persistent failure
160+        done
161+    ) &
162+
163+    # VGA console - respawn if dies
164+    (
165+        while :; do
166+            setsid getty -L 38400 tty1 2>&1
167+            sleep 1  # prevent rapid respawn on persistent failure
168+        done
169+    ) &
170+
171+    (
172+        while :; do
173+            setsid getty -L 115200 ttyS1 2>&1
174+            sleep 1  # prevent rapid respawn on persistent failure
175+        done
176+    ) &
177+
178+    # VGA console - respawn if dies
179+    (
180+        while :; do
181+            setsid getty -L 38400 tty2 2>&1
182+            sleep 1  # prevent rapid respawn on persistent failure
183+        done
184+    ) &
185+else
186+    # Fallback: just exec a shell on console
187+    echo "getty not found. starting emergency shell"
188+    exec /bin/sh
189+fi
190+
191+# handle shutdowns
192+shutdown_system() {
193+    act=$1
194+    echo "shutting down"
195+
196+    # Stop services in reverse order using saved PIDs
197+    if [ -d /etc/sv/pid ]; then
198+        echo "stopping services"
199+        for pidfile in $(ls -r /etc/sv/pid/*.pid 2>/dev/null); do
200+            pid=$(cat "$pidfile" 2>/dev/null)
201+            svc=$(basename "$pidfile" .pid)
202+            if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
203+                echo "stopped $svc (pid $pid)"
204+                kill -TERM "$pid" 2>/dev/null
205+            fi
206+        done
207+        sleep 2
208+    fi
209+
210+    # terminate all remaining processes
211+    echo "stopping everything else"
212+    killall5 -15
213+    sleep 2
214+
215+    # force kill the rest
216+    sleep 1
217+
218+    # unmount everything
219+    echo "unmounting fs"
220+    umount -ar 2>/dev/null
221+    sync
222+
223+    echo "bye"
224+    #$act -f
225+    case $act in
226+    	reboot) echo 'cya soon' ; reboot -f ;;
227+    	poweroff) echo 'bye' ; poweroff -f ;;
228+    	halt) echo 'bye' ; halt -f ;;
229+    esac
230+}
231+
232+trap 'shutdown_system poweroff' TERM 
233+trap 'shutdown_system reboot' INT
234+trap 'shutdown_system halt' USR1
235+
236+echo "system ready"
237+
238+#idle loop
239+while :; do
240+    wait
241+done