diff options
| -rw-r--r-- | erts/emulator/drivers/win32/win_efile.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/erts/emulator/drivers/win32/win_efile.c b/erts/emulator/drivers/win32/win_efile.c index 04bd1139f5..cb186e9fab 100644 --- a/erts/emulator/drivers/win32/win_efile.c +++ b/erts/emulator/drivers/win32/win_efile.c @@ -1082,12 +1082,17 @@ char* buf; /* Buffer to write. */ size_t count; /* Number of bytes to write. */ { DWORD written; /* Bytes written in last operation. */ + OVERLAPPED overlapped; + OVERLAPPED* pOverlapped = NULL; if (flags & EFILE_MODE_APPEND) { - (void) SetFilePointer((HANDLE) fd, 0, NULL, FILE_END); + memset(&overlapped, 0, sizeof(overlapped)); + overlapped.Offset = 0xffffffff; + overlapped.OffsetHigh = 0xffffffff; + pOverlapped = &overlapped; } while (count > 0) { - if (!WriteFile((HANDLE) fd, buf, count, &written, NULL)) + if (!WriteFile((HANDLE) fd, buf, count, &written, pOverlapped)) return set_error(errInfo); buf += written; count -= written; @@ -1107,11 +1112,16 @@ efile_writev(Efile_error* errInfo, /* Where to return error codes */ size_t size) /* Number of bytes to write */ { int cnt; /* Buffers so far written */ + OVERLAPPED overlapped; + OVERLAPPED* pOverlapped = NULL; ASSERT(iovcnt >= 0); if (flags & EFILE_MODE_APPEND) { - (void) SetFilePointer((HANDLE) fd, 0, NULL, FILE_END); + memset(&overlapped, 0, sizeof(overlapped)); + overlapped.Offset = 0xffffffff; + overlapped.OffsetHigh = 0xffffffff; + pOverlapped = &overlapped; } for (cnt = 0; cnt < iovcnt; cnt++) { if (iov[cnt].iov_base && iov[cnt].iov_len > 0) { @@ -1123,7 +1133,7 @@ efile_writev(Efile_error* errInfo, /* Where to return error codes */ iov[cnt].iov_base + p, iov[cnt].iov_len - p, &w, - NULL)) + pOverlapped)) return set_error(errInfo); } } |