efe7f37542
This commit deletes the old `snapshot_0` implementation of wasi-common, along with the `wig` crate that was used to generate bindings for it. This then reimplements `snapshot_0` in terms of `wasi_snapshot_preview1`. There were very few changes between the two snapshots: * The `nlink` field of `FileStat` was increased from 32 to 64 bits. * The `set` field of `whence` was reordered. * Clock subscriptions in polling dropped their redundant userdata field. This makes all of the syscalls relatively straightforward to simply delegate to the next snapshot's implementation. Some trickery happens to avoid extra cost when dealing with iovecs, but since the memory layout of iovecs remained the same this should still work. Now that `snapshot_0` is using wiggle we simply have a trait to implement, and that's implemented for the same `WasiCtx` that has the `wasi_snapshot_preview1` trait implemented for it as well. While this theoretically means that you could share the file descriptor table between the two snapshots that's not supported in the generated bindings just yet. A separate `WasiCtx` will be created for each WASI module.
50 lines
1.6 KiB
TOML
50 lines
1.6 KiB
TOML
[package]
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name = "wasi-common"
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version = "0.21.0"
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authors = ["The Wasmtime Project Developers"]
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description = "WASI implementation in Rust"
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license = "Apache-2.0 WITH LLVM-exception"
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categories = ["wasm"]
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keywords = ["webassembly", "wasm"]
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repository = "https://github.com/bytecodealliance/wasmtime"
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readme = "README.md"
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edition = "2018"
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include = ["src/**/*", "LICENSE", "WASI/phases", "build.rs"]
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# This doesn't actually link to a native library, but it allows us to set env
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# vars like `DEP_WASI_COMMON_19_*` for crates that have build scripts and depend
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# on this crate, allowing other crates to use the same witx files.
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links = "wasi-common-19"
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[dependencies]
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anyhow = "1.0"
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thiserror = "1.0"
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libc = "0.2"
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getrandom = { version = "0.2.0", features = ["std"] }
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cfg-if = "1.0"
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filetime = "0.2.7"
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lazy_static = "1.4.0"
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wiggle = { path = "../wiggle", default-features = false, version = "0.21.0" }
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tracing = "0.1.19"
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[target.'cfg(unix)'.dependencies]
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yanix = { path = "yanix", version = "0.21.0" }
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[target.'cfg(windows)'.dependencies]
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winx = { path = "winx", version = "0.21.0" }
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winapi = "0.3"
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cpu-time = "1.0"
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[badges]
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maintenance = { status = "actively-developed" }
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[features]
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default = ["trace_log"]
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# This feature enables the `tracing` logs in the calls to target the `log`
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# ecosystem of backends (e.g. `env_logger`. Disable this if you want to use
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# `tracing-subscriber`.
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trace_log = [ "wiggle/tracing_log", "tracing/log" ]
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# Need to make the wiggle_metadata feature available to consumers of this
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# crate if they want the snapshots to have metadata available.
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wiggle_metadata = ["wiggle/wiggle_metadata"]
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