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22 lines
634 B
Go
22 lines
634 B
Go
//go:build !windows
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package archive
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import "golang.org/x/sys/unix"
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// overrideUmask sets current process's file mode creation mask to newmask
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// and returns a function to restore it.
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//
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// WARNING for readers stumbling upon this code. Changing umask in a multi-
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// threaded environment isn't safe. Don't use this without understanding the
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// risks, and don't export this function for others to use (we shouldn't even
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// be using this ourself).
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//
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// FIXME(thaJeztah): we should get rid of these hacks if possible.
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func overrideUmask(newMask int) func() {
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oldMask := unix.Umask(newMask)
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return func() {
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unix.Umask(oldMask)
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}
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}
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