6da498c28f2598bea4d651756485f57d54e379f4
We can break if KEYCTL_READ return value is equal to our buffer size. From keyctl(2): On a successful return, the return value is always the total size of the payload data. To determine whether the buffer was of sufficient size, check to see that the return value is less than or equal to the value supplied in arg4.
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systemd - System and Service Manager
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