newlib/winsup/cygwin/cygerrno.h

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/* cygerrno.h: main Cygwin header file.
Copyright 2000 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
void __stdcall seterrno_from_win_error (const char *file, int line, DWORD code);
void __stdcall seterrno (const char *, int line);
int __stdcall geterrno_from_win_error (DWORD code, int deferrno);
#define __seterrno() seterrno (__FILE__, __LINE__)
#define __seterrno_from_win_error(val) seterrno_from_win_error (__FILE__, __LINE__, val)
#define set_errno(val) (_impure_ptr->_errno = (val))
#define get_errno() (_impure_ptr->_errno)
extern "C" void __stdcall set_sig_errno (int e);
class save_errno
{
int saved;
public:
save_errno () {saved = get_errno ();}
save_errno (int what) {saved = get_errno (); set_errno (what); }
void set (int what) {set_errno (what); saved = what;}
void reset () {saved = get_errno ();}
~save_errno () {set_errno (saved);}
};
extern const char *__sp_fn;
extern int __sp_ln;