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1# Replaces traditional overdesigned shutdown mechanism.
2#
3# No communication with init is necessary:
4# just ask all processes to exit.
5# Then unmount everything. Then reboot or power off.
6
7# Install /sbin/ symlinks named halt, reboot, poweroff
8# (and also possibly shutdown) to e.g.
9# /app/shutdown-1.0/script/shutdown:
10#
11ln -s /app/shutdown-1.0/script/shutdown /sbin/halt
12ln -s /app/shutdown-1.0/script/shutdown /sbin/reboot
13ln -s /app/shutdown-1.0/script/shutdown /sbin/poweroff
14#
15# shutdown spawns do_shutdown in new session, redirected to /dev/null,
16# tells user that shutdown is in progress, and sleeps
17# (for cosmetic reasons: do not confuse user by letting him
18# type more commands in this terminal).
19#
20# do_shutdown tries to switch to a VT console.
21# Then, (only if -r) it spawns a hardshutdown child, to reboot
22# unconditionally in 30 seconds if something later goes seriously bad.
23# Then it runs stop_tasks, writing to /var/log/reboot/YYYYMMDDhhmmss.log,
24# then it runs stop_storage.
25# Then it commands kernel to halt/reboot/poweroff, if requested.
26# Then it sleeps forever.
27#
28# Build the hardshutdown binary:
29#
30cd script && ./hardshutdown.make.sh