mirror of
https://github.com/reactos/reactos.git
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117 lines
2.3 KiB
C
117 lines
2.3 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/crt/errno.c
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* PURPOSE: Unknown
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* PROGRAMER: Unknown
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*
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*/
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#include <precomp.h>
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#include "doserrmap.h"
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#include <internal/wine/msvcrt.h>
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/*
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* @implemented
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*/
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unsigned long* __doserrno(void)
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{
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return (unsigned long*)(&GetThreadData()->tdoserrno);
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}
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/*
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* @implemented
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*/
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int *_errno(void)
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{
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return(&GetThreadData()->terrno);
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}
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int __set_doserrno(int error)
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{
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PTHREADDATA ThreadData;
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ThreadData = GetThreadData();
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if (ThreadData)
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ThreadData->tdoserrno = error;
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return(error);
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}
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int __set_errno(int error)
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{
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PTHREADDATA ThreadData;
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ThreadData = GetThreadData();
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if (ThreadData)
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ThreadData->terrno = error;
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return(error);
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}
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/*
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* This function sets both doserrno to the passed in OS error code
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* and also maps this to an appropriate errno code. The mapping
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* has been deduced automagically by running this functions, which
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* exists in MSVCRT but is undocumented, on all the error codes in
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* winerror.h.
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*/
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void _dosmaperr(unsigned long oserror)
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{
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int pos, base, lim;
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__set_doserrno(oserror);
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/* Use binary chop to find the corresponding errno code */
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for (base=0, lim=sizeof(doserrmap)/sizeof(doserrmap[0]); lim; lim >>= 1) {
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pos = base+(lim >> 1);
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if (doserrmap[pos].winerr == oserror) {
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__set_errno(doserrmap[pos].en);
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return;
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} else if (doserrmap[pos].winerr < oserror) {
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base = pos + 1;
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--lim;
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}
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}
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/* EINVAL appears to be the default */
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__set_errno(EINVAL);
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}
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/******************************************************************************
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* _set_error_mode (MSVCRT.@)
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*
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* Set the error mode, which describes where the C run-time writes error
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* messages.
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*
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* PARAMS
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* mode - the new error mode
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*
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* RETURNS
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* The old error mode.
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*
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* TODO
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* This function does not have a proper implementation; the error mode is
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* never used.
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*/
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int CDECL _set_error_mode(int mode)
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{
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static int current_mode = MSVCRT__OUT_TO_DEFAULT;
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const int old = current_mode;
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if ( MSVCRT__REPORT_ERRMODE != mode ) {
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current_mode = mode;
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}
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return old;
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}
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/******************************************************************************
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* _seterrormode (MSVCRT.@)
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*/
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void CDECL _seterrormode(int mode)
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{
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SetErrorMode( mode );
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}
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/* EOF */
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