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0511fdb431
Adds a logging daemon that collects logs in a ring buffer in a runc container. The tools logwrite and logread can be used to read/write logs. The logging daemon can be sent open file descriptors that will be read and included in the logs. Modifies init to start the daemon and use logwrite to capture logs from runc. Signed-off-by: Magnus Skjegstad <magnus@skjegstad.com>
46 lines
878 B
Bash
Executable File
46 lines
878 B
Bash
Executable File
#!/bin/sh
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setup_console() {
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tty=${1%,*}
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speed=${1#*,}
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inittab="$2"
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securetty="$3"
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line=
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term="linux"
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[ "$speed" = "$1" ] && speed=115200
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case "$tty" in
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ttyS*|ttyAMA*|ttyUSB*|ttyMFD*)
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line="-L"
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term="vt100"
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;;
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tty?)
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line=""
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speed="38400"
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term=""
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;;
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esac
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# skip consoles already in inittab
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grep -q "^$tty:" "$inittab" && return
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echo "$tty::once:cat /etc/issue" >> "$inittab"
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echo "$tty::respawn:/sbin/getty -n -l /bin/sh $line $speed $tty $term" >> "$inittab"
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if ! grep -q -w "$tty" "$securetty"; then
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echo "$tty" >> "$securetty"
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fi
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}
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/bin/mount -t tmpfs tmpfs /mnt
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/bin/cp -a / /mnt 2>/dev/null
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/bin/mount -t proc -o noexec,nosuid,nodev proc /proc
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for opt in $(cat /proc/cmdline); do
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case "$opt" in
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console=*)
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setup_console ${opt#console=} /mnt/etc/inittab /mnt/etc/securetty;;
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esac
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done
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exec /bin/busybox switch_root /mnt /sbin/init
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