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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/uuid/src/rng.rs | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/uuid/src/rng.rs')
-rw-r--r-- | third_party/rust/uuid/src/rng.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/third_party/rust/uuid/src/rng.rs b/third_party/rust/uuid/src/rng.rs new file mode 100644 index 0000000000..dcfbb8d665 --- /dev/null +++ b/third_party/rust/uuid/src/rng.rs @@ -0,0 +1,39 @@ +#[cfg(any(feature = "v4", feature = "v7"))] +pub(crate) fn bytes() -> [u8; 16] { + #[cfg(not(feature = "fast-rng"))] + { + let mut bytes = [0u8; 16]; + + getrandom::getrandom(&mut bytes).unwrap_or_else(|err| { + // NB: getrandom::Error has no source; this is adequate display + panic!("could not retrieve random bytes for uuid: {}", err) + }); + + bytes + } + + #[cfg(feature = "fast-rng")] + { + rand::random() + } +} + +#[cfg(any(feature = "v1", feature = "v6"))] +pub(crate) fn u16() -> u16 { + #[cfg(not(feature = "fast-rng"))] + { + let mut bytes = [0u8; 2]; + + getrandom::getrandom(&mut bytes).unwrap_or_else(|err| { + // NB: getrandom::Error has no source; this is adequate display + panic!("could not retrieve random bytes for uuid: {}", err) + }); + + ((bytes[0] as u16) << 8) | (bytes[1] as u16) + } + + #[cfg(feature = "fast-rng")] + { + rand::random() + } +} |