Add nanosecond precision to File.utime on Unix
#15335
Conversation
Co-authored-by: Kubo Takehiro <[email protected]>
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I hope that unlike #9392, this won't drop support for macOS < 10.13, High Sierra |
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I suppose it would, assuming What's your concern with MacOS < 10.13? It has been EOL since 2019 so I don't see much reason to keep up support. It might be possible to do something similar to bytecodealliance/rustix#275 to keep old versions supported, but I doubt the effort would be justified. |
The `utimensat` and `futimens` syscalls only appeared in macOS 10.14. To keep some backward compatibility, the x86_64 bindings are fixed to not declare them. We can however assume the syscalls to be present when compiling for aarch64. `Crystal::System::File.utime` now falls back to `utimes` when `futimens` isn't defined. Adds the missing `AT_FDCWD` constant to aarch64-android bindings. Fixes the DragonflyBSD binding.
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I kept the legacy syscalls for macOS x86_64 builds to keep support with macOS < 10.14, but use the new ones for aarch64 targets that's only supported since macOS 11+ (hence always fine). I also fixed the aarch64-android and dragonflybsd bindings. |
straight-shoota
changed the title
File.utime on Unix
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@ysbaddaden I updated the OP to include a full description of the change that can be used in the commit message. Please update it if you see any need. I'll wait for your go to merge this. |
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@straight-shoota Perfect! |
Bump the minimum version after crystal-lang/crystal#15335
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@ysbaddaden Would it be possible to keep the legacy ones on aarch64 as well? I'm still using macOS 10.13 on my M1 machine. |
ysbaddaden
deleted the
refactor/file-utime-nanosecond-precision-on-unix
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What? But the minimum macOS version for the oldest M1 machine (Apple macbook Air 2020) is macOS 11.x 😕 All aarch64-apple-darwin targets necessarily have these syscalls. Do not confuse 10.13 (high sierra) with 13 (ventura). |
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I suppose we could consider making this configurable somehow, in order to opt-in to the modern API on x86_64-darwin as well. |
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@ysbaddaden Ah, you're right of course. I'm using macOS 12 (Monterey), so that's not an issue, I guess. |
Reopens #9392 with fixes to the android and solaris bindings, and
#system_utimehas already been updated to support nanosecond precision when available.Crystal::System::File.utimeusesLibC.utimensatwhen available, otherwise falls back toutimes.The
utimensatsyscall is specified in POSIX.1-2008 and was introduced in the following OS releases:To keep some backward compatibility, the x86_64-darwin bindings do not
declare it. We can however assume the syscalls to be present when
compiling for aarch64-darwin.