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wasix: read IPC streams with plain read() instead of failing ENOSYS #8

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wasix: read IPC streams with plain read() instead of failing ENOSYS #8

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11 changes: 8 additions & 3 deletions src/unix/stream.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1092,9 +1092,14 @@ static void uv__read(uv_stream_t* stream) {
}
while (nread < 0 && errno == EINTR);
#else
/* WASI does not support msghdr. */
nread = -1;
errno = ENOSYS;
/* WASIX has no msghdr/SCM_RIGHTS, so no descriptor can accompany the
* data (uv__try_write refuses send_handle with UV_ENOSYS on both
* ends). A plain read preserves the IPC byte stream, which is all
* that e.g. child_process.fork/process.send channels need. */
do {
nread = read(uv__stream_fd(stream), buf.base, buf.len);
}
while (nread < 0 && errno == EINTR);
#endif /* !__wasi__ */
}

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