mirror of
https://github.com/postgres/postgres.git
synced 2025-12-08 00:03:14 -05:00
09eb633e1b
These files are only compiled on Windows, and most of them didn't have "#ifdef WIN32" guards. Remove them from the few that did, for consistency. Author: Tristan Partin Discussion: https://www.postgresql.org/message-id/CXGM9RYSXA2J.1DBO4MRXGZA9P@neon.tech
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* win32common.c
|
|
* Common routines shared among the win32*.c ports.
|
|
*
|
|
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
*
|
|
* IDENTIFICATION
|
|
* src/port/win32common.c
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
#ifdef FRONTEND
|
|
#include "postgres_fe.h"
|
|
#else
|
|
#include "postgres.h"
|
|
#endif
|
|
|
|
/*
|
|
* pgwin32_get_file_type
|
|
*
|
|
* Convenience wrapper for GetFileType() with specific error handling for all the
|
|
* port implementations. Returns the file type associated with a HANDLE.
|
|
*
|
|
* On error, sets errno with FILE_TYPE_UNKNOWN as file type.
|
|
*/
|
|
DWORD
|
|
pgwin32_get_file_type(HANDLE hFile)
|
|
{
|
|
DWORD fileType = FILE_TYPE_UNKNOWN;
|
|
DWORD lastError;
|
|
|
|
errno = 0;
|
|
|
|
/*
|
|
* When stdin, stdout, and stderr aren't associated with a stream the
|
|
* special value -2 is returned:
|
|
* https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/get-osfhandle
|
|
*/
|
|
if (hFile == INVALID_HANDLE_VALUE || hFile == (HANDLE) -2)
|
|
{
|
|
errno = EINVAL;
|
|
return FILE_TYPE_UNKNOWN;
|
|
}
|
|
|
|
fileType = GetFileType(hFile);
|
|
lastError = GetLastError();
|
|
|
|
/*
|
|
* Invoke GetLastError in order to distinguish between a "valid" return of
|
|
* FILE_TYPE_UNKNOWN and its return due to a calling error. In case of
|
|
* success, GetLastError() returns NO_ERROR.
|
|
*/
|
|
if (fileType == FILE_TYPE_UNKNOWN && lastError != NO_ERROR)
|
|
{
|
|
_dosmaperr(lastError);
|
|
return FILE_TYPE_UNKNOWN;
|
|
}
|
|
|
|
return fileType;
|
|
}
|