[unix-history] / usr / src / lib / libc / gen / isatty.c

/*
 * Copyright (c) 1988 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)isatty.c	5.3 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <sgtty.h>

isatty(fd)
	int fd;
{
	struct sgttyb ttyb;

	return(ioctl(fd, TIOCGETP, &ttyb) >= 0);
}
Commit	Line	Data
b5799bf2	1	/*
81627469 KB	2	* Copyright (c) 1988 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
b5799bf2 BJ	16	*/
b5799bf2 BJ	17
81627469 KB	18	#if defined(LIBC_SCCS) && !defined(lint)
	19	static char sccsid[] = "@(#)isatty.c 5.3 (Berkeley) %G%";
	20	#endif /* LIBC_SCCS and not lint */
	21
b5799bf2 BJ	22	#include <sgtty.h>
b5799bf2 BJ	23
81627469 KB	24	isatty(fd)
81627469 KB	25	int fd;
b5799bf2 BJ	26	{
	27	struct sgttyb ttyb;
	28
81627469	29	return(ioctl(fd, TIOCGETP, &ttyb) >= 0);
b5799bf2	30	}