mirror of
https://github.com/siderolabs/talos.git
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d430a37e46
This removes the github.com/pkg/errors package in favor of the official error wrapping in go 1.13. Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package metal
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import (
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"fmt"
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"io/ioutil"
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"net"
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"path/filepath"
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"golang.org/x/sys/unix"
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"github.com/talos-systems/talos/internal/pkg/kernel"
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"github.com/talos-systems/talos/internal/pkg/runtime"
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"github.com/talos-systems/talos/pkg/blockdevice/probe"
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"github.com/talos-systems/talos/pkg/constants"
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"github.com/talos-systems/talos/pkg/download"
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)
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const (
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mnt = "/mnt"
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)
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// Metal is a discoverer for non-cloud environments.
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type Metal struct{}
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// Name implements the platform.Platform interface.
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func (b *Metal) Name() string {
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return "Metal"
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}
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// Configuration implements the platform.Platform interface.
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func (b *Metal) Configuration() ([]byte, error) {
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var option *string
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if option = kernel.ProcCmdline().Get(constants.KernelParamConfig).First(); option == nil {
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return nil, fmt.Errorf("no config option was found")
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}
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switch *option {
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case constants.MetalConfigISOLabel:
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return readConfigFromISO()
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default:
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return download.Download(*option)
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}
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}
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// Hostname implements the platform.Platform interface.
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func (b *Metal) Hostname() (hostname []byte, err error) {
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return nil, nil
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}
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// Mode implements the platform.Platform interface.
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func (b *Metal) Mode() runtime.Mode {
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return runtime.Metal
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}
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// ExternalIPs provides any external addresses assigned to the instance
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func (b *Metal) ExternalIPs() (addrs []net.IP, err error) {
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return addrs, err
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}
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func readConfigFromISO() (b []byte, err error) {
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var dev *probe.ProbedBlockDevice
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dev, err = probe.GetDevWithFileSystemLabel(constants.MetalConfigISOLabel)
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if err != nil {
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return nil, fmt.Errorf("failed to find %s iso: %w", constants.MetalConfigISOLabel, err)
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}
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if err = unix.Mount(dev.Path, mnt, dev.SuperBlock.Type(), unix.MS_RDONLY, ""); err != nil {
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return nil, fmt.Errorf("failed to mount iso: %w", err)
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}
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b, err = ioutil.ReadFile(filepath.Join(mnt, filepath.Base(constants.ConfigPath)))
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if err != nil {
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return nil, fmt.Errorf("read config: %s", err.Error())
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}
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if err = unix.Unmount(mnt, 0); err != nil {
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return nil, fmt.Errorf("failed to unmount: %w", err)
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}
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return b, nil
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}
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