77 lines
2.1 KiB
Bash
Executable File
77 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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# System initialization sequence:
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#
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# /init (this file)
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# |
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# +--(1) /etc/01_prepare.sh
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# |
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# +--(2) /etc/02_overlay.sh
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# |
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# +-- /etc/03_init.sh
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# |
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# +-- /sbin/init
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# |
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# +--(1) /etc/04_bootscript.sh
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# | |
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# | +-- udhcpc
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# | |
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# | +-- /etc/05_rc.udhcp
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# |
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# +--(2) /bin/sh (Alt + F1, main console)
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# |
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# +--(2) /bin/sh (Alt + F2)
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# |
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# +--(2) /bin/sh (Alt + F3)
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# |
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# +--(2) /bin/sh (Alt + F4)
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echo "Welcome to \"Minimal Linux Live\" (/init)"
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# Let's mount all core file systems.
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/etc/01_prepare.sh
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# Print message on screen.
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cat << CEOF
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Press empty key (ESC, TAB, SPACE, ENTER) or wait 5 seconds to continue with
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the overlay initialization process. Press any other key for PID 1 rescue shell
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inside the initramfs area.
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CEOF
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# Wait 5 second or until any keybord key is pressed.
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read -t 5 -n1 -s key
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if [ ! "$key" = "" ] ; then
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# Print message on screen.
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cat << CEOF
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This is PID 1 rescue shell inside the initramfs area. Execute the following in
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order to continue with the overlay initialization process:
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exec /etc/02_overlay.sh
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Execute the following in order to skip the overlay initialization and continue
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directly with the system initialization:
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exec /sbin/init
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CEOF
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# Set flag which indicates that we have obtained controlling terminal.
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export PID1_SHELL=true
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# Interactive shell with controlling tty as PID 1.
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exec setsid cttyhack sh
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fi
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# Create new mountpoint in RAM, make it our new root location and overlay it
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# with our storage area (if overlay area exists at all). This operation invokes
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# the script '/etc/03_init.sh' as the new init process.
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exec /etc/02_overlay.sh
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echo "(/init) - you can never see this unless there is a serious bug..."
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# Wait until any key has been pressed.
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read -n1 -s
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