4 Commits

Author	SHA1	Message	Date
Nick Mathewson	027c536598	rename inherit values to avoid conflict with system defines	2019-04-04 12:56:52 -04:00
Nick Mathewson	12205c3cbe	Make map_anon expose the result of a noinherit attempt ... Previously we did this for tests only, but it's valuable for getting proper fork behavior in rand_fast.	2019-04-04 12:56:52 -04:00
Nick Mathewson	065e7da8e6	Re-enable and fix unit test for nofork mappings ... This test was previously written to use the contents of the system headers to decide whether INHERIT_NONE or INHERIT_ZERO was going to work. But that won't work across different environments, such as (for example) when the kernel doesn't match the headers. Instead, we add a testing-only feature to the code to track which of these options actually worked, and verify that it behaved as we expected. Closes ticket 29541; bugfix not on any released version of Tor.	2019-02-25 08:55:25 -05:00
Nick Mathewson	8ca808f81d	Code for anonymous mappings via mmap() or CreateFileMapping(). ... Using an anonymous mmap() is a good way to get pages that we can set kernel-level flags on, like minherit() or madvise() or mlock(). We're going to use that so that we can make uninheritable locked pages to store PRNG data.	2019-02-06 22:03:30 -05:00