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

#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
1f92ea9c TL	1	#include <stdio.h>
	2
	3	FILE *
	4	freopen(file, mode, iop)
	5	char *file;
	6	register char *mode;
	7	register FILE *iop;
	8	{
	9	register f;
	10
	11	fclose(iop);
	12	if (*mode=='w')
	13	f = creat(file, 0666);
	14	else if (*mode=='a') {
	15	if ((f = open(file, 1)) < 0)
	16	f = creat(file, 0666);
	17	lseek(f, 0L, 2);
	18	} else
	19	f = open(file, 0);
	20	if (f < 0)
	21	return(NULL);
	22	iop->_file = f;
	23	if (*mode != 'r')
	24	iop->_flag \|= _IOWRT;
	25	else
	26	iop->_flag \|= _IOREAD;
	27	return(iop);
	28	}