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1fbf40796f
Fixes #1563 This implements dmesg reading via `/dev/kmsg`, with message parsing and formatting. Kernel log facility and severity are parsed, timestamp is calculated relative to boot time (it's accurate unless time jumps a lot during node lifetime). New flags to follow dmesg was added, tail flag allows to stream only new message (ignoring old messages). We could try to implement tailing last N messages, just a bit more work, open to suggestions (for symmetry with regular logs). Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
24 lines
562 B
Go
24 lines
562 B
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
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import (
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"fmt"
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"syscall"
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"time"
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)
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func getBootTime() (time.Time, error) {
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var sysinfo syscall.Sysinfo_t
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err := syscall.Sysinfo(&sysinfo)
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if err != nil {
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return time.Time{}, fmt.Errorf("could not get boot time: %w", err)
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}
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// sysinfo only has seconds
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return time.Now().Add(-1 * (time.Duration(sysinfo.Uptime) * time.Second)), nil
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}
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