574862fd89
Add diff comparison with support for double walking two trees for comparison or single walking a diff tree. Single walking requires further implementation for specific mount types. Add directory copy function which is intended to provide fastest possible local copy of file system directories without hardlinking. Add test package to make creating filesystems for test easy and comparisons deep and informative. Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
22 lines
562 B
Go
22 lines
562 B
Go
package fs
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import (
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"syscall"
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"time"
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)
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// Gnu tar and the go tar writer don't have sub-second mtime
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// precision, which is problematic when we apply changes via tar
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// files, we handle this by comparing for exact times, *or* same
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// second count and either a or b having exactly 0 nanoseconds
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func sameFsTime(a, b time.Time) bool {
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return a == b ||
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(a.Unix() == b.Unix() &&
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(a.Nanosecond() == 0 || b.Nanosecond() == 0))
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}
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func sameFsTimeSpec(a, b syscall.Timespec) bool {
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return a.Sec == b.Sec &&
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(a.Nsec == b.Nsec || a.Nsec == 0 || b.Nsec == 0)
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}
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