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LibWasm: Implement wasi fd_filestat_get()

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Ali Mohammad Pur 2023-05-04 01:31:45 +03:30 • committed by Andreas Kling
parent f62187ed5d
commit ae9c40451a
1 changed files with 58 additions and 3 deletions
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61
Userland/Libraries/LibWasm/WASI/Wasi.cpp
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@ -553,11 +553,11 @@ ErrorOr<Result<FileStat>> Implementation::impl$path_filestat_get(Configuration&
if (S_ISREG(buf.st_mode))
return FileType::RegularFile;
if (S_ISFIFO(buf.st_mode))
return FileType::Unknown; // no Pipe? :yakfused:
return FileType::Unknown; // FIXME: FileType::Pipe is currently not present in WASI (but it should be) so we use Unknown for now.
if (S_ISLNK(buf.st_mode))
return FileType::SymbolicLink;
if (S_ISSOCK(buf.st_mode))
return FileType::SocketDGram; // :shrug:
return FileType::SocketStream;
return FileType::Unknown;
};
@ -696,6 +696,62 @@ ErrorOr<Result<Timestamp>> Implementation::impl$clock_time_get(Configuration&, C
return Result<Timestamp> { static_cast<u64>(ts.tv_sec) * nanoseconds_in_second + static_cast<u64>(ts.tv_nsec) };
}
ErrorOr<Result<FileStat>> Implementation::impl$fd_filestat_get(Configuration&, FD fd)
{
int resolved_fd = -1;
auto mapped_fd = map_fd(fd);
mapped_fd.visit(
[&](PreopenedDirectoryDescriptor descriptor) {
auto& entry = preopened_directories()[descriptor.value()];
resolved_fd = entry.opened_fd.value_or_lazy_evaluated([&] {
DeprecatedString path = entry.host_path.string();
return open(path.characters(), O_DIRECTORY, 0755);
});
entry.opened_fd = resolved_fd;
},
[&](u32 fd) {
resolved_fd = fd;
},
[](UnmappedDescriptor) {});
if (resolved_fd < 0)
return errno_value_from_errno(errno);
struct stat stat_buf;
if (fstat(resolved_fd, &stat_buf) < 0)
return errno_value_from_errno(errno);
constexpr auto file_type_of = [](struct stat const& buf) {
if (S_ISDIR(buf.st_mode))
return FileType::Directory;
if (S_ISCHR(buf.st_mode))
return FileType::CharacterDevice;
if (S_ISBLK(buf.st_mode))
return FileType::BlockDevice;
if (S_ISREG(buf.st_mode))
return FileType::RegularFile;
if (S_ISFIFO(buf.st_mode))
return FileType::Unknown; // no Pipe? :yakfused:
if (S_ISLNK(buf.st_mode))
return FileType::SymbolicLink;
if (S_ISSOCK(buf.st_mode))
return FileType::SocketDGram; // :shrug:
return FileType::Unknown;
};
return Result(FileStat {
.dev = stat_buf.st_dev,
.ino = stat_buf.st_ino,
.filetype = file_type_of(stat_buf),
.nlink = stat_buf.st_nlink,
.size = stat_buf.st_size,
.atim = stat_buf.st_atime,
.mtim = stat_buf.st_mtime,
.ctim = stat_buf.st_ctime,
});
}
ErrorOr<Result<void>> Implementation::impl$random_get(Configuration& configuration, Pointer<u8> buf, Size buf_len)
{
auto buffer_slice = TRY(slice_typed_memory(configuration, buf, buf_len));
@ -717,7 +773,6 @@ ErrorOr<Result<void>> Implementation::impl$fd_datasync(Configuration&, FD) { ret
ErrorOr<Result<FDStat>> Implementation::impl$fd_fdstat_get(Configuration&, FD) { return Errno::NoSys; }
ErrorOr<Result<void>> Implementation::impl$fd_fdstat_set_flags(Configuration&, FD, FDFlags) { return Errno::NoSys; }
ErrorOr<Result<void>> Implementation::impl$fd_fdstat_set_rights(Configuration&, FD, Rights fs_rights_base, Rights fs_rights_inheriting) { return Errno::NoSys; }
ErrorOr<Result<FileStat>> Implementation::impl$fd_filestat_get(Configuration&, FD) { return Errno::NoSys; }
ErrorOr<Result<void>> Implementation::impl$fd_filestat_set_size(Configuration&, FD, FileSize) { return Errno::NoSys; }
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; }