1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23
24/*
25 * -last fcntl
26 */
27
28#include <ast.h>
29
30#ifndef fcntl
31
32NoN(fcntl)
33
34#else
35
36#include <ls.h>
37#include <ast_tty.h>
38#include <error.h>
39
40#if F_SETFD >= _ast_F_LOCAL
41#if _sys_filio
42#include <sys/filio.h>
43#endif
44#endif
45
46#if _lib_fcntl
47#undef	fcntl
48extern int	fcntl(int, int, ...);
49#endif
50
51int
52_ast_fcntl(int fd, int op, ...)
53{
54	int		n;
55	int		save_errno;
56	struct stat	st;
57	va_list		ap;
58
59	save_errno = errno;
60	va_start(ap, op);
61	if (op >= _ast_F_LOCAL) switch (op)
62	{
63#if F_DUPFD >= _ast_F_LOCAL
64	case F_DUPFD:
65		n = va_arg(ap, int);
66		op = dup2(fd, n);
67		break;
68#endif
69#if F_GETFL >= _ast_F_LOCAL
70	case F_GETFL:
71		op = fstat(fd, &st);
72		break;
73#endif
74#if F_SETFD >= _ast_F_LOCAL && defined(FIOCLEX)
75	case F_SETFD:
76		n = va_arg(ap, int);
77		op = ioctl(fd, n == FD_CLOEXEC ? FIOCLEX : FIONCLEX, 0);
78		break;
79#endif
80	default:
81		errno = EINVAL;
82		op = -1;
83		break;
84	}
85	else
86#if _lib_fcntl
87	op = fcntl(fd, op, va_arg(ap, int));
88#else
89	{
90		errno = EINVAL;
91		op = -1;
92	}
93#endif
94	va_end(ap);
95	return(op);
96}
97
98#endif
99