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LibWasm: Port/stub on Windows

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These WASI functions are ported to Windows:

fd_close
fd_write
fd_read

These WASI functions are stubbed on Windows for now:

path_filestat_get
path_create_directory
path_open
clock_time_get
fd_filestat_get
fd_fdstat_get
fd_seek
This commit is contained in:
stasoid 2024-12-18 10:51:39 +05:00
parent 051447c0c0
commit f30b26d318
2 changed files with 46 additions and 11 deletions
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1
Libraries/LibWasm/AbstractMachine/AbstractMachine.h
View file

@ -20,6 +20,7 @@
namespace Wasm {
class Configuration;
class Result;
struct Interpreter;
struct InstantiationError {

56
Libraries/LibWasm/WASI/Wasi.cpp
View file

@ -10,12 +10,24 @@
#include <AK/Random.h>
#include <AK/Span.h>
#include <AK/Tuple.h>
#include <LibCore/System.h>
#include <LibWasm/AbstractMachine/Configuration.h>
#include <LibWasm/Wasi.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#ifndef AK_OS_WINDOWS
# include <unistd.h>
#endif
#define RETURN_ERRNO_IF_ERROR(result) \
if (result.is_error()) { \
if (result.error().is_errno()) \
return errno_value_from_errno(result.error().code()); \
else \
return Errno::Invalid; \
}
namespace Wasm::Wasi::ABI {
@ -310,8 +322,10 @@ static ErrorOr<size_t> copy_string_excluding_terminating_null(Configuration& con
}
static Errno errno_value_from_errno(int value);
#ifndef AK_OS_WINDOWS
static FileType file_type_of(struct stat const& buf);
static FDFlags fd_flags_of(struct stat const& buf);
#endif
Vector<AK::String> const& Implementation::arguments() const
{
@ -434,8 +448,8 @@ ErrorOr<Result<void>> Implementation::impl$fd_close(Configuration&, FD fd)
{
return map_fd(fd).visit(
[&](u32 fd) -> Result<void> {
if (close(bit_cast<i32>(fd)) != 0)
return errno_value_from_errno(errno);
auto result = Core::System::close(bit_cast<i32>(fd));
RETURN_ERRNO_IF_ERROR(result);
return {};
},
[&](PreopenedDirectoryDescriptor) -> Result<void> {
@ -456,10 +470,9 @@ ErrorOr<Result<Size>> Implementation::impl$fd_write(Configuration& configuration
Size bytes_written = 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 = write(fd_value, slice.data(), slice.size());
if (result < 0)
return errno_value_from_errno(errno);
bytes_written += static_cast<Size>(result);
auto result = Core::System::write(fd_value, slice);
RETURN_ERRNO_IF_ERROR(result);
bytes_written += static_cast<Size>(result.value());
}
return bytes_written;
}
@ -509,6 +522,8 @@ ErrorOr<Result<void>> Implementation::impl$fd_prestat_dir_name(Configuration& co
return Result<void> {};
}
#ifndef AK_OS_WINDOWS
ErrorOr<Result<FileStat>> Implementation::impl$path_filestat_get(Configuration& configuration, FD fd, LookupFlags flags, ConstPointer<u8> path, Size path_len)
{
auto dir_fd = AT_FDCWD;
@ -751,6 +766,8 @@ ErrorOr<Result<FileStat>> Implementation::impl$fd_filestat_get(Configuration&, F
});
}
#endif
ErrorOr<Result<void>> Implementation::impl$random_get(Configuration& configuration, Pointer<u8> buf, Size buf_len)
{
auto buffer_slice = TRY(slice_typed_memory(configuration, buf, buf_len));
@ -769,14 +786,15 @@ ErrorOr<Result<Size>> Implementation::impl$fd_read(Configuration& configuration,
Size bytes_read = 0;
for (auto& iovec : TRY(copy_typed_array(configuration, iovs, iovs_len))) {
auto slice = TRY(slice_typed_memory(configuration, iovec.buf, iovec.buf_len));
auto result = read(fd_value, slice.data(), slice.size());
if (result < 0)
return errno_value_from_errno(errno);
bytes_read += static_cast<Size>(result);
auto result = Core::System::read(fd_value, slice);
RETURN_ERRNO_IF_ERROR(result);
bytes_read += static_cast<Size>(result.value());
}
return bytes_read;
}
#ifndef AK_OS_WINDOWS
ErrorOr<Result<FDStat>> Implementation::impl$fd_fdstat_get(Configuration&, FD fd)
{
auto mapped_fd = map_fd(fd);
@ -822,9 +840,21 @@ ErrorOr<Result<FileSize>> Implementation::impl$fd_seek(Configuration&, FD fd, Fi
return FileSize(result);
}
#endif
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#ifdef AK_OS_WINDOWS
ErrorOr<Result<FileStat>> Implementation::impl$path_filestat_get(Configuration& configuration, FD fd, LookupFlags flags, ConstPointer<u8> path, Size path_len) { return Errno::NoSys; }
ErrorOr<Result<void>> Implementation::impl$path_create_directory(Configuration& configuration, FD fd, Pointer<u8> path, Size path_len) { return Errno::NoSys; }
ErrorOr<Result<FD>> Implementation::impl$path_open(Configuration& configuration, FD fd, LookupFlags lookup_flags, Pointer<u8> path, Size path_len, OFlags o_flags, Rights, Rights, FDFlags fd_flags) { return Errno::NoSys; }
ErrorOr<Result<Timestamp>> Implementation::impl$clock_time_get(Configuration&, ClockID id, Timestamp precision) { return Errno::NoSys; }
ErrorOr<Result<FileStat>> Implementation::impl$fd_filestat_get(Configuration&, FD fd) { return Errno::NoSys; }
ErrorOr<Result<FDStat>> Implementation::impl$fd_fdstat_get(Configuration&, FD fd) { return Errno::NoSys; }
ErrorOr<Result<FileSize>> Implementation::impl$fd_seek(Configuration&, FD fd, FileDelta offset, Whence whence) { return Errno::NoSys; }
#endif
ErrorOr<Result<Timestamp>> Implementation::impl$clock_res_get(Configuration&, ClockID id)
{
return Errno::NoSys;
@ -1182,8 +1212,10 @@ Errno errno_value_from_errno(int value)
return Errno::SPipe;
case ESRCH:
return Errno::SRCH;
#ifdef ESTALE
case ESTALE:
return Errno::Stale;
#endif
case ETIMEDOUT:
return Errno::TimedOut;
case ETXTBSY:
@ -1195,6 +1227,7 @@ Errno errno_value_from_errno(int value)
}
}
#ifndef AK_OS_WINDOWS
FileType file_type_of(struct stat const& buf)
{
switch (buf.st_mode & S_IFMT) {
@ -1221,6 +1254,7 @@ FDFlags fd_flags_of(struct stat const&)
FDFlags::Bits result {};
return FDFlags { result };
}
#endif
}
namespace AK {