| 432 | } |
| 433 | |
| 434 | WasiExpect<void> INode::fdPwrite(Span<Span<const uint8_t>> IOVs, |
| 435 | __wasi_filesize_t Offset, |
| 436 | __wasi_size_t &NWritten) const noexcept { |
| 437 | iovec SysIOVs[kIOVMax]; |
| 438 | size_t SysIOVsSize = 0; |
| 439 | for (auto &IOV : IOVs) { |
| 440 | SysIOVs[SysIOVsSize].iov_base = const_cast<uint8_t *>(IOV.data()); |
| 441 | SysIOVs[SysIOVsSize].iov_len = IOV.size(); |
| 442 | ++SysIOVsSize; |
| 443 | } |
| 444 | |
| 445 | #if __GLIBC_PREREQ(2, 10) |
| 446 | if (auto Res = ::pwritev(Fd, SysIOVs, SysIOVsSize, Offset); |
| 447 | unlikely(Res < 0)) { |
| 448 | return WasiUnexpect(fromErrNo(errno)); |
| 449 | } else { |
| 450 | NWritten = EndianValue(static_cast<__wasi_size_t>(Res)).le(); |
| 451 | } |
| 452 | #else |
| 453 | const auto OldOffset = ::lseek(Fd, 0, SEEK_CUR); |
| 454 | if (OldOffset < 0) { |
| 455 | return WasiUnexpect(fromErrNo(errno)); |
| 456 | } |
| 457 | if (::lseek(Fd, Offset, SEEK_SET) < 0 || |
| 458 | ::lseek(Fd, OldOffset, SEEK_SET) < 0) { |
| 459 | return WasiUnexpect(fromErrNo(errno)); |
| 460 | } |
| 461 | if (auto Res = ::writev(Fd, SysIOVs, SysIOVsSize); unlikely(Res < 0)) { |
| 462 | ::lseek(Fd, OldOffset, SEEK_SET); |
| 463 | return WasiUnexpect(fromErrNo(errno)); |
| 464 | } else { |
| 465 | if (::lseek(Fd, OldOffset, SEEK_SET) < 0) { |
| 466 | return WasiUnexpect(fromErrNo(errno)); |
| 467 | } |
| 468 | NWritten = EndianValue(static_cast<__wasi_size_t>(Res)).le(); |
| 469 | } |
| 470 | #endif |
| 471 | |
| 472 | return {}; |
| 473 | } |
| 474 | |
| 475 | WasiExpect<void> INode::fdRead(Span<Span<uint8_t>> IOVs, |
| 476 | __wasi_size_t &NRead) const noexcept { |
nothing calls this directly
no test coverage detected