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| author | Patrik Nyblom <[email protected]> | 2010-11-29 13:55:21 +0100 |
|---|---|---|
| committer | Patrik Nyblom <[email protected]> | 2010-11-29 13:55:32 +0100 |
| commit | 9d4fd926cb881dad5c15da4f63969ca72fe1dc98 (patch) | |
| tree | 33a587a601e8db33399e66bdf7ce93637eec304d /erts/emulator/drivers/win32 | |
| parent | 0502c8f7726b531e909545952968962d462c19c4 (diff) | |
| parent | 6aae43917d587be7f631673d1e1963fbb2ba15e1 (diff) | |
| download | otp-9d4fd926cb881dad5c15da4f63969ca72fe1dc98.tar.gz otp-9d4fd926cb881dad5c15da4f63969ca72fe1dc98.tar.bz2 otp-9d4fd926cb881dad5c15da4f63969ca72fe1dc98.zip | |
Merge branch 'jr/windows-file-append' into dev
* jr/windows-file-append:
Fix appending to large files (>4GB) on Windows
OTP-8958
Diffstat (limited to 'erts/emulator/drivers/win32')
| -rwxr-xr-x | 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 88dd42b42a..6de08e2fa6 100755 --- a/erts/emulator/drivers/win32/win_efile.c +++ b/erts/emulator/drivers/win32/win_efile.c @@ -1112,12 +1112,17 @@ 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; @@ -1137,11 +1142,16 @@ 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) { @@ -1153,7 +1163,7 @@ 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); } } |