| Denys Vlasenko | c21dfaf | 2018-04-20 15:12:52 +0200 | [diff] [blame] | 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 | # |
| 11 | ln -s /app/shutdown-1.0/script/shutdown /sbin/halt |
| 12 | ln -s /app/shutdown-1.0/script/shutdown /sbin/reboot |
| 13 | ln -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 | # |
| 30 | cd script && ./hardshutdown.make.sh |