/*
* This is documented to succeed on read-only files, but Win32's
* FlushFileBuffers functions fails with "access denied" in such a
* case. So we only signal an error if the error is *not* "access
* denied".
*/
PRInt32
_PR_MD_FSYNC(PRFileDesc *fd)
{
/*
* From the documentation:
*
* On Windows NT, the function FlushFileBuffers fails if hFile
* is a handle to console output. That is because console
* output is not buffered. The function returns FALSE, and
* GetLastError returns ERROR_INVALID_HANDLE.
*
* On the other hand, on Win95, it returns without error. I cannot
* assume that 0, 1, and 2 are console, because if someone closes
* System.out and then opens a file, they might get file descriptor
* 1. An error on *that* version of 1 should be reported, whereas
* an error on System.out (which was the original 1) should be
* ignored. So I use isatty() to ensure that such an error was due
* to this bogosity, and if it was, I ignore the error.
*/
BOOL ok = FlushFileBuffers((HANDLE)fd->secret->md.osfd);
if (!ok) {
DWORD err = GetLastError();
if (err != ERROR_ACCESS_DENIED) { // from winerror.h
_PR_MD_MAP_FSYNC_ERROR(err);
return -1;
}
}
return 0;
}
PR_IMPLEMENT(PRInt32) _amigaos_FSync(PRFileDesc *fd)
{
PRInt32 rv, err;
rv = fsync(fd->secret->md.osfd);
if (rv == -1)
{
err = _MD_ERRNO();
_PR_MD_MAP_FSYNC_ERROR(err);
}
return(rv);
}
PRInt32
_PR_MD_FSYNC(PRFileDesc *fd)
{
PRInt32 rc = DosResetBuffer((HFILE)fd->secret->md.osfd);
if (rc != NO_ERROR) {
if (rc != ERROR_ACCESS_DENIED) {
_PR_MD_MAP_FSYNC_ERROR(rc);
return -1;
}
}
return 0;
}
