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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/rustix/tests/time/y2038.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/rustix/tests/time/y2038.rs')
-rw-r--r-- | vendor/rustix/tests/time/y2038.rs | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/vendor/rustix/tests/time/y2038.rs b/vendor/rustix/tests/time/y2038.rs new file mode 100644 index 000000000..45a073d19 --- /dev/null +++ b/vendor/rustix/tests/time/y2038.rs @@ -0,0 +1,77 @@ +/// Test that `Timespec` and `Secs` support a 64-bit number of seconds, +/// avoiding the y2038 bug. +/// +/// The Rust Musl target and libc crate are currently using Musl 1.1. It is +/// expected to update to Musl 1.2 at some point, at which point it'll gain a +/// 64-bit `time_t`. +/// +/// 32-bit Android is [not y2038 compatible]. In theory we could use +/// `libc::syscall` and call the new syscalls ourselves, however that doesn't +/// seem worth the effort on a platform that will likely never support add +/// such support itself. +/// +/// [not y2038 compatible]: https://android.googlesource.com/platform/bionic/+/refs/heads/master/docs/32-bit-abi.md#is-32_bit-on-lp32-y2038 +#[cfg(not(all(target_env = "musl", target_pointer_width = "32")))] +#[cfg(not(all(target_os = "android", target_pointer_width = "32")))] +#[cfg(not(all(target_os = "emscripten", target_pointer_width = "32")))] +#[test] +fn test_y2038() { + use rustix::time::{Secs, Timespec}; + + let tv_sec: i64 = 0; + let _ = Timespec { tv_sec, tv_nsec: 0 }; + let _: Secs = tv_sec; + + #[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))] + { + use rustix::time::Itimerspec; + + let _ = Itimerspec { + it_interval: Timespec { tv_sec, tv_nsec: 0 }, + it_value: Timespec { tv_sec, tv_nsec: 0 }, + }; + } +} + +#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))] +#[test] +fn test_y2038_with_timerfd() { + use rustix::time::{ + timerfd_create, timerfd_gettime, timerfd_settime, Itimerspec, TimerfdClockId, TimerfdFlags, + TimerfdTimerFlags, Timespec, + }; + + let fd = timerfd_create(TimerfdClockId::Monotonic, TimerfdFlags::CLOEXEC).unwrap(); + + let set = Itimerspec { + it_interval: Timespec { + tv_sec: (1_u64 << 32) as _, + tv_nsec: 20, + }, + it_value: Timespec { + tv_sec: (1_u64 << 32) as _, + tv_nsec: 21, + }, + }; + let _old: Itimerspec = match timerfd_settime(&fd, TimerfdTimerFlags::ABSTIME, &set) { + Ok(i) => i, + + // On 32-bit and mips64 platforms, accept `EOVERFLOW`, meaning that + // y2038 support in `timerfd` APIs is not available on this platform + // or this version of the platform. + #[cfg(any(target_pointer_width = "32", target_arch = "mips64"))] + Err(rustix::io::Errno::OVERFLOW) => return, + + Err(e) => panic!("unexpected error: {:?}", e), + }; + + let new = timerfd_gettime(&fd).unwrap(); + + // The timer counts down. + assert_eq!(set.it_interval.tv_sec, new.it_interval.tv_sec); + assert_eq!(set.it_interval.tv_nsec, new.it_interval.tv_nsec); + assert!(new.it_value.tv_sec <= set.it_value.tv_sec); + assert!( + new.it_value.tv_nsec < set.it_value.tv_nsec || new.it_value.tv_sec < set.it_value.tv_sec + ); +} |