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Shim pipe and fcntl #2974
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Shim pipe and fcntl #2974
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| internal static extern unsafe int FcntlGetPipeSz(int fd); | ||
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| [DllImport(Libraries.SystemNative)] | ||
| internal static extern unsafe int FcntlSetPipeSz(int fd, int size); |
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Should all of these methods instead be on the Fcntl type, e.g. Interop.Sys.Fcntl.GetPipeSz(fd)?
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Nice. I really like how this cleans things up, and I agree with the direction. A few comments, and otherwise LGTM. |
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| return fcntl(fd, F_SETPIPE_SZ, size); | ||
| #else | ||
| errno = ENOTSUP; | ||
| return -1 |
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FYI, build failed due to lack of a semicolon ending this line.
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@stephentoub I think I've addressed everything and CI is green. Let me know if there's anything else. |
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Looks great. |
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Shim pipe and fcntl Commit migrated from dotnet/corefx@86d077f
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Add shims for pipe and fcntl.
Move the ignore of inheritability / O_CLOEXEC down to the shim.
Add a capability API for fcntl F_GET/SETPIPE_SZ. Originally, I was going to use errno = ENOTSUP alone, but the current behavior requires making a call in some cases before we even have a handle to invoke fcntl.
I went back and forth on how to shim fcntl, but decided on separate functions for each command (with just those that we use shimed for now. It's easier to reason about as the command effectively have different signatures and we lose strong typing if we mirror the '...' varargs of the native API. It also eliminates the complexity of converting the command code.
With this change, System.IO.Pipes can now have one build for all Unix targets.