53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
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package system
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import (
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"os"
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"syscall"
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"time"
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"unsafe"
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)
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var (
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maxTime time.Time
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)
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func init() {
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if unsafe.Sizeof(syscall.Timespec{}.Nsec) == 8 {
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// This is a 64 bit timespec
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// os.Chtimes limits time to the following
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maxTime = time.Unix(0, 1<<63-1)
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} else {
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// This is a 32 bit timespec
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maxTime = time.Unix(1<<31-1, 0)
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}
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}
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// Chtimes changes the access time and modified time of a file at the given path
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func Chtimes(name string, atime time.Time, mtime time.Time) error {
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unixMinTime := time.Unix(0, 0)
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unixMaxTime := maxTime
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// If the modified time is prior to the Unix Epoch, or after the
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// end of Unix Time, os.Chtimes has undefined behavior
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// default to Unix Epoch in this case, just in case
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if atime.Before(unixMinTime) || atime.After(unixMaxTime) {
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atime = unixMinTime
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}
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if mtime.Before(unixMinTime) || mtime.After(unixMaxTime) {
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mtime = unixMinTime
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}
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if err := os.Chtimes(name, atime, mtime); err != nil {
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return err
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}
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// Take platform specific action for setting create time.
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if err := setCTime(name, mtime); err != nil {
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return err
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}
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return nil
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}
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