wasi-common: deprecate fd_allocate #6217
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pchickey
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alexcrichton
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Apr 17, 2023
sunfishcode
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Apr 17, 2023
| // semantics on those two platforms. WASI never specified the semantics, and our test suite | ||
| // never included this operation. We have removed this operation from preview 2, and we are | ||
| // no longer supporting it in preview 1 as well. | ||
| Err(Error::not_supported()) |
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This is still removing support for fd_sync and fd_datasync, which I think we should keep. Even though they're not portable, there is value in being able to expose what functionality the host might have to applications.
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I got rid of that change locally but I didnt hit -f when I pushed it! Sorry.
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April 17, 2023 14:14
…TSUP This operation from cloudabi is linux-specific, isn't even supported across all linux filesystems, and has no support on macos or windows. Rather than ship spotty support, it has been removed from preview 2, and we are no longer supporting it in preview 1 as well. The preview 1 implementation will still check if fd is a file, and has rights, just to reject those cases with the errors expected.
rewrite the file_allocate test to just check for failure. remove use of fd_allocate from fd_advise test, and remove test configuration setting used for excluding use of fd_allocate on macos and windows.
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This removes features from WASI Preview 1 that were supported inconsistently across platforms.
We are doing so because these features never worked on windows, and can't be supported consistiently on mac and linux. They have all been removed from the WASI Preview 2 spec in progress because of these inconsistencies.
We are not aware of any real-world programs or WASI users that are broken by removing this support.
fd_allocateThis operation from cloudabi is linux-specific, isn't even supported across all linux filesystems, and has no support on macos
or windows. Rather than ship spotty support, it has been removed from preview 2, and this PR removes support for it in preview 1 as well.
The PR also removes flags from the test suite which work around this operation only being available on linux.