define-alpine-the-sequel/runit/scripts/00-pseudofs.sh
2023-01-16 12:14:20 -03:00

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msg "Mounting pseudo-filesystems..."
mountpoint -q /proc || mount -o nosuid,noexec,nodev -t proc proc /proc
mountpoint -q /sys || mount -o nosuid,noexec,nodev -t sysfs sys /sys
mountpoint -q /run || mount -o mode=0755,nosuid,nodev -t tmpfs run /run
mountpoint -q /dev || mount -o mode=0755,nosuid -t devtmpfs dev /dev
mkdir -p -m0755 /run/runit /run/lvm /run/user /run/lock /run/log /dev/pts /dev/shm
mountpoint -q /dev/pts || mount -o mode=0620,gid=5,nosuid,noexec -n -t devpts devpts /dev/pts
mountpoint -q /dev/shm || mount -o mode=1777,nosuid,nodev -n -t tmpfs shm /dev/shm
mountpoint -q /sys/kernel/security || mount -n -t securityfs securityfs /sys/kernel/security
if [ -d /sys/firmware/efi/efivars ]; then
mountpoint -q /sys/firmware/efi/efivars || mount -o nosuid,noexec,nodev -t efivarfs efivarfs /sys/firmware/efi/efivars
fi
if [ -z "$VIRTUALIZATION" ]; then
_cgroupv1=""
_cgroupv2=""
case "${CGROUP_MODE:-hybrid}" in
legacy)
_cgroupv1="/sys/fs/cgroup"
;;
hybrid)
_cgroupv1="/sys/fs/cgroup"
_cgroupv2="${_cgroupv1}/unified"
;;
unified)
_cgroupv2="/sys/fs/cgroup"
;;
esac
# cgroup v1
if [ -n "$_cgroupv1" ]; then
mountpoint -q "$_cgroupv1" || mount -o mode=0755 -t tmpfs cgroup "$_cgroupv1"
while read -r _subsys_name _hierarchy _num_cgroups _enabled; do
[ "$_enabled" = "1" ] || continue
_controller="${_cgroupv1}/${_subsys_name}"
mkdir -p "$_controller"
mountpoint -q "$_controller" || mount -t cgroup -o "$_subsys_name" cgroup "$_controller"
done < /proc/cgroups
fi
# cgroup v2
if [ -n "$_cgroupv2" ]; then
mkdir -p "$_cgroupv2"
mountpoint -q "$_cgroupv2" || mount -t cgroup2 -o nsdelegate cgroup2 "$_cgroupv2"
fi
fi