198dc17845
The securebit keep-caps retains the capabilities in the permitted set over an UID change (ambient capabilities are cleared though). Setting the keep-caps securebit after the uid change and before execve doesn't make sense as it is cleared during execve and there is no additional user ID change after this point. Altough the documentation (man 7 capabilities) is ambigious, keep-caps is reset during execve although keep-caps-locked is set. After execve only keep-caps-locked is set and keep-caps is cleared.
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