forked from wrenn/wrenn
pptx704
32e5a5a715
Reviewed-on: wrenn/sandbox#2 Co-authored-by: pptx704 <rafeed@omukk.dev> Co-committed-by: pptx704 <rafeed@omukk.dev>
31 lines
1.0 KiB
Bash
31 lines
1.0 KiB
Bash
#!/bin/sh
|
|
# wrenn-init: minimal PID 1 init for Firecracker microVMs.
|
|
# Mounts virtual filesystems then execs envd.
|
|
|
|
set -e
|
|
|
|
# Mount essential virtual filesystems if not already mounted.
|
|
mount -t proc proc /proc 2>/dev/null || true
|
|
mount -t sysfs sysfs /sys 2>/dev/null || true
|
|
mount -t devtmpfs devtmpfs /dev 2>/dev/null || true
|
|
mkdir -p /dev/pts /dev/shm
|
|
mount -t devpts devpts /dev/pts 2>/dev/null || true
|
|
mount -t tmpfs tmpfs /dev/shm 2>/dev/null || true
|
|
mount -t tmpfs tmpfs /tmp 2>/dev/null || true
|
|
mount -t tmpfs tmpfs /run 2>/dev/null || true
|
|
mkdir -p /sys/fs/cgroup
|
|
mount -t cgroup2 cgroup2 /sys/fs/cgroup 2>/dev/null || true
|
|
|
|
# Set hostname
|
|
hostname sandbox
|
|
|
|
# Configure DNS resolver.
|
|
echo "nameserver 8.8.8.8" > /etc/resolv.conf
|
|
echo "nameserver 8.8.4.4" >> /etc/resolv.conf
|
|
|
|
# Set a standard PATH so envd and all child processes can find common binaries.
|
|
export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
|
|
|
|
# Exec tini as PID 1 — it reaps zombie processes and forwards signals to envd.
|
|
exec /sbin/tini -- /usr/local/bin/envd
|