fdopen.cpp File Reference

#include <corecrt_internal_stdio.h>

Include dependency graph for fdopen.cpp:

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Functions
template<typename Character >
static FILE *__cdecl	common_fdopen (int const fh, Character const *const mode) throw ()
FILE *__cdecl	_fdopen (int const fh, char const *const mode)
FILE *__cdecl	_wfdopen (int const fh, wchar_t const *const mode)

Function Documentation

_fdopen()

FILE *__cdecl _fdopen	(	int const	fh,
		char const *const	mode
	)

Definition at line 63 of file fdopen.cpp.

{
    return common_fdopen(fh, mode);
}

_wfdopen()

FILE *__cdecl _wfdopen	(	int const	fh,
		wchar_t const *const	mode
	)

Definition at line 68 of file fdopen.cpp.

{
    return common_fdopen(fh, mode);
}

common_fdopen()

template<typename Character >

static FILE *__cdecl common_fdopen ( int const  fh, Character const *const  mode  ) throw ( )

static

Definition at line 20 of file fdopen.cpp.

{
    _VALIDATE_RETURN(mode != nullptr, EINVAL, nullptr);
 
    _CHECK_FH_RETURN(fh, EBADF, nullptr);
    _VALIDATE_RETURN(fh >= 0 && (unsigned)fh < (unsigned)_nhandle, EBADF, nullptr);
    _VALIDATE_RETURN(_osfile(fh) & FOPEN, EBADF, nullptr);
 
    __acrt_stdio_stream_mode const parsed_mode = __acrt_stdio_parse_mode(mode);
    if (!parsed_mode._success)
        return nullptr;
 
    __crt_stdio_stream stream = __acrt_stdio_allocate_stream();
    if (!stream.valid())
    {
        errno = EMFILE;
        return nullptr;
    }
 
    __try
    {
        // Ensure that streams get flushed during pre-termination:
        #ifndef CRTDLL
        ++_cflush;
        #endif
 
        stream.set_flags(parsed_mode._stdio_mode);
        stream->_file = fh;
    }
    __finally
    {
        stream.unlock();
    }
    __endtry
 
    return stream.public_stream();
}

Referenced by _fdopen(), and _wfdopen().