Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
att
GitHub Repository: att/ast
 Path: blob/master/src/cmd/3d/fcntl3d.c
1808 views
1
/***********************************************************************

2
*                                                                      *

3
*               This software is part of the ast package               *

4
*          Copyright (c) 1989-2011 AT&T Intellectual Property          *

5
*                      and is licensed under the                       *

6
*                 Eclipse Public License, Version 1.0                  *

7
*                    by AT&T Intellectual Property                     *

8
*                                                                      *

9
*                A copy of the License is available at                 *

10
*          http://www.eclipse.org/org/documents/epl-v10.html           *

11
*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

12
*                                                                      *

13
*              Information and Software Systems Research               *

14
*                            AT&T Research                             *

15
*                           Florham Park NJ                            *

16
*                                                                      *

17
*                 Glenn Fowler <[email protected]>                  *

18
*                  David Korn <[email protected]>                   *

19
*                   Eduardo Krell <[email protected]>                   *

20
*                                                                      *

21
***********************************************************************/

22
#pragma prototyped

23


24
#include "3d.h"

25


26
#ifdef	fcntl3d

27


28
#include <stdarg.h>

29


30
int

31
fcntl3d(int fd, int op, ...)

32
{

33
	register int	r;

34
	int		n;

35
	void*		arg;

36
	va_list		ap;

37


38
	initialize();

39
	va_start(ap, op);

40
	arg = va_arg(ap, void*);

41
	va_end(ap);

42
	n = (int)integralof(arg);

43
	if (op == F_DUPFD && state.file[n].reserved)

44
		close(n);

45
	r = FCNTL(fd, op, arg);

46
#if FS

47
	if (r >= 0 && r < elementsof(state.file))

48
		switch (op)

49
		{

50
		case F_DUPFD:

51
			fs3d_dup(fd, r);

52
			break;

53
		case F_SETFD:

54
			if (state.cache)

55
			{

56
				if (!(n & FD_CLOEXEC))

57
					state.file[fd].flags &= ~FILE_CLOEXEC;

58
				else if (!(state.file[fd].flags & FILE_OPEN))

59
					fileinit(fd, NiL, NiL, 1);

60
				else

61
					state.file[fd].flags |= FILE_CLOEXEC;

62
			}

63
			break;

64
		}

65
#endif

66
	return r;

67
}

68


69
#else

70


71
NoN(fcntl)

72


73
#endif

74


75