Initial wasi/wasm support for fs, uio, zerocopy #2011
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connor4312
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Mar 7, 2023
connor4312
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Mar 7, 2023
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Looks like build failure is a flake |
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I guess these changes could also be applied to |
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References #786
Depends on rust-lang/libc#3143, hence marking as a draft.DoneThis implements WASI support sufficient to build the fs, uio, and zerocopy features (enough to build coreutils 🙂)
Lots of stuff is flagged out since file permissions aren't present in
wasi_snapshot_preview1which is what rust supports out of the box forwasm32-wasi.One kind of weird thing is dealing with
PATH_MAX. WASI doesn't define one, it's whatever the host system is, but afaik there's not an API to get this. So for WASI I defaulted to libc's "linux_like" value of 4096. Let me know what you think.