[unix-history] / usr / src / lib / libc / stdio / freopen.c

/* @(#)freopen.c	4.1 (Berkeley) %G% */
#include <stdio.h>

FILE *
freopen(file, mode, iop)
char *file;
register char *mode;
register FILE *iop;
{
	register f;

	fclose(iop);
	if (*mode=='w')
		f = creat(file, 0666);
	else if (*mode=='a') {
		if ((f = open(file, 1)) < 0)
			f = creat(file, 0666);
		lseek(f, 0L, 2);
	} else
		f = open(file, 0);
	if (f < 0)
		return(NULL);
	iop->_file = f;
	if (*mode != 'r')
		iop->_flag |= _IOWRT;
	else
		iop->_flag |= _IOREAD;
	return(iop);
}
Commit	Line	Data
2de31004 BJ	1	/* @(#)freopen.c 4.1 (Berkeley) %G% */
	2	#include <stdio.h>
	3
	4	FILE *
	5	freopen(file, mode, iop)
	6	char *file;
	7	register char *mode;
	8	register FILE *iop;
	9	{
	10	register f;
	11
	12	fclose(iop);
	13	if (*mode=='w')
	14	f = creat(file, 0666);
	15	else if (*mode=='a') {
	16	if ((f = open(file, 1)) < 0)
	17	f = creat(file, 0666);
	18	lseek(f, 0L, 2);
	19	} else
	20	f = open(file, 0);
	21	if (f < 0)
	22	return(NULL);
	23	iop->_file = f;
	24	if (*mode != 'r')
	25	iop->_flag \|= _IOWRT;
	26	else
	27	iop->_flag \|= _IOREAD;
	28	return(iop);
	29	}