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a90fad3fc8
Get the timezone off the localtime symlink like systemd does it. It is more efficient then fork/exec another command for it that may or may not exits and the /etc/timezone files doesn't exist on most distros so that is not a great fallback. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
30 lines
748 B
Go
30 lines
748 B
Go
package ignition
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import (
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"errors"
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"os"
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"path/filepath"
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"strings"
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)
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func getLocalTimeZone() (string, error) {
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path, err := filepath.EvalSymlinks("/etc/localtime")
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if err != nil {
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// of the path does not exist, ignore it as the code default to UTC then
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if errors.Is(err, os.ErrNotExist) {
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return "", nil
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}
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return "", err
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}
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// Allow using TZDIR per:
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// https://sourceware.org/git/?p=glibc.git;a=blob;f=time/tzfile.c;h=8a923d0cccc927a106dc3e3c641be310893bab4e;hb=HEAD#l149
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zoneinfo := os.Getenv("TZDIR")
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if zoneinfo == "" {
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// default zoneinfo location
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zoneinfo = "/usr/share/zoneinfo"
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}
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// Trim of the TZDIR part to extract the actual timezone name
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return strings.TrimPrefix(path, filepath.Clean(zoneinfo)+"/"), nil
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}
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