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| author | Andrew Kelley <andrew@ziglang.org> | 2020-12-18 15:38:38 -0700 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2020-12-18 15:54:01 -0700 |
| commit | 53987c932c9d62cc9cdae3d523fb62756ce83ca9 (patch) | |
| tree | 280817d390ef900cf590c40f47cca4230b354b0e /lib/std/buf_map.zig | |
| parent | 2b8dcc76eba92ad44bd88756218de8d2bd8a1c10 (diff) | |
| download | zig-53987c932c9d62cc9cdae3d523fb62756ce83ca9.tar.gz zig-53987c932c9d62cc9cdae3d523fb62756ce83ca9.zip | |
std.crypto.random: introduce fork safety
Everybody gets what they want!
* AT_RANDOM is completely ignored.
* On Linux, MADV_WIPEONFORK is used to provide fork safety.
* On pthread systems, `pthread_atfork` is used to provide fork safety.
* For systems that do not have the capability to provide fork safety,
the implementation falls back to calling getrandom() every time.
* If madvise is unavailable or returns an error, or pthread_atfork
fails for whatever reason, it falls back to calling getrandom() every
time.
* Applications may choose to opt-out of fork safety.
* Applications may choose to opt-in to unconditionally calling
getrandom() for every call to std.crypto.random.fillFn.
* Added `std.meta.globalOption`.
* Added `std.os.madvise` and related bits.
* Bumped up the size of the main thread TLS buffer. See the comment
there for justification.
* Simpler hot path in TLS initialization.
Diffstat (limited to 'lib/std/buf_map.zig')
0 files changed, 0 insertions, 0 deletions