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df52c13581
That's the recommended syntax: https://golangci-lint.run/usage/false-positives/ Signed-off-by: Alexey Palazhchenko <alexey.palazhchenko@gmail.com>
49 lines
1.1 KiB
Go
49 lines
1.1 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 kmsg provides access to kernel log.
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//
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//nolint:dupl
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package kmsg
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import (
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"fmt"
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"io"
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"log"
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"os"
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"golang.org/x/sys/unix"
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)
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// SetupLogger configures the logger to write to the kernel ring buffer via
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// /dev/kmsg.
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//
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// If logger is nil, default `log` logger is redirectred.
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//
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// If extraWriter is not nil, logs will be copied to it as well.
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func SetupLogger(logger *log.Logger, prefix string, extraWriter io.Writer) error {
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kmsg, err := os.OpenFile("/dev/kmsg", os.O_RDWR|unix.O_CLOEXEC|unix.O_NONBLOCK|unix.O_NOCTTY, 0o666)
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if err != nil {
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return fmt.Errorf("failed to open /dev/kmsg: %w", err)
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}
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var writer io.Writer = &Writer{KmsgWriter: kmsg}
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if extraWriter != nil {
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writer = io.MultiWriter(writer, extraWriter)
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}
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if logger != nil {
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logger.SetOutput(writer)
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logger.SetPrefix(prefix + " ")
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logger.SetFlags(0)
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} else {
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log.SetOutput(writer)
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log.SetPrefix(prefix + " ")
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log.SetFlags(0)
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}
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return nil
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}
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