文件操作 - lxd-agent-setup
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文件: /usr/lib/systemd/lxd-agent-setup
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#!/bin/sh set -eu PREFIX="/run/lxd_agent" # Functions. mount_virtiofs() { mount -t virtiofs config "${PREFIX}/.mnt" >/dev/null 2>&1 } mount_9p() { /sbin/modprobe 9pnet_virtio >/dev/null 2>&1 || true /bin/mount -t 9p config "${PREFIX}/.mnt" -o access=0,trans=virtio >/dev/null 2>&1 } fail() { umount -l "${PREFIX}" >/dev/null 2>&1 || true rmdir "${PREFIX}" >/dev/null 2>&1 || true echo "${1}" exit 1 } # Setup the mount target. umount -l "${PREFIX}" >/dev/null 2>&1 || true mkdir -p "${PREFIX}" mount -t tmpfs tmpfs "${PREFIX}" -o mode=0700,size=50M mkdir -p "${PREFIX}/.mnt" # Try virtiofs first. mount_virtiofs || mount_9p || fail "Couldn't mount virtiofs or 9p, failing." # Copy the data. cp -Ra "${PREFIX}/.mnt/"* "${PREFIX}" # Unmount the temporary mount. umount "${PREFIX}/.mnt" rmdir "${PREFIX}/.mnt" # Fix up permissions. chown -R root:root "${PREFIX}"
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