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LibWasm: Implement wasi fd_read

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This commit is contained in:
Ali Mohammad Pur 2023-05-04 01:32:05 +03:30 • committed by Andreas Kling
parent ae9c40451a
commit 5f999097e5
1 changed files with 18 additions and 1 deletions
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19
Userland/Libraries/LibWasm/WASI/Wasi.cpp
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@ -760,6 +760,24 @@ ErrorOr<Result<void>> Implementation::impl$random_get(Configuration& configurati
return Result<void> {};
}
ErrorOr<Result<Size>> Implementation::impl$fd_read(Configuration& configuration, FD fd, Pointer<IOVec> iovs, Size iovs_len)
{
auto mapped_fd = map_fd(fd);
if (!mapped_fd.has<u32>())
return errno_value_from_errno(EBADF);
u32 fd_value = mapped_fd.get<u32>();
Size bytes_read = 0;
for (auto& iovec : TRY(copy_typed_array(configuration, iovs, iovs_len))) {
auto slice = TRY(slice_typed_memory(configuration, iovec.buf, iovec.buf_len));
auto result = read(fd_value, slice.data(), slice.size());
if (result < 0)
return errno_value_from_errno(errno);
bytes_read += static_cast<Size>(result);
}
return bytes_read;
}
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
@ -777,7 +795,6 @@ ErrorOr<Result<void>> Implementation::impl$fd_filestat_set_size(Configuration&,
ErrorOr<Result<void>> Implementation::impl$fd_filestat_set_times(Configuration&, FD, Timestamp atim, Timestamp mtim, FSTFlags) { return Errno::NoSys; }
ErrorOr<Result<Size>> Implementation::impl$fd_pread(Configuration&, FD, Pointer<IOVec> iovs, Size iovs_len, FileSize offset) { return Errno::NoSys; }
ErrorOr<Result<Size>> Implementation::impl$fd_pwrite(Configuration&, FD, Pointer<CIOVec> iovs, Size iovs_len, FileSize offset) { return Errno::NoSys; }
ErrorOr<Result<Size>> Implementation::impl$fd_read(Configuration&, FD, Pointer<IOVec> iovs, Size iovs_len) { return Errno::NoSys; }
ErrorOr<Result<Size>> Implementation::impl$fd_readdir(Configuration&, FD, Pointer<u8> buf, Size buf_len, DirCookie cookie) { return Errno::NoSys; }
ErrorOr<Result<void>> Implementation::impl$fd_renumber(Configuration&, FD from, FD to) { return Errno::NoSys; }
ErrorOr<Result<FileSize>> Implementation::impl$fd_seek(Configuration&, FD, FileDelta offset, Whence whence) { return Errno::NoSys; }