42-archive/libftasm/srcs/sys/open_new.c
2017-06-15 09:52:36 +02:00

27 lines
483 B
C

#include "libft.h"
/*
** If file already exists, create xxx(1) instead, etc up to 9
*/
int open_new(char *filename, int oflag)
{
char *fname;
int fd;
int i;
int len;
len = ft_strlen(filename);
fname = ft_strnew(len + 4);
ft_strcpy(fname, filename);
i = 0;
while (i < 10 && (fd = open(fname, oflag | O_CREAT | O_EXCL, 0644)) < 0
&& errno == EEXIST)
{
fname[len] = '(';
fname[len + 1] = ++i + '0';
fname[len + 2] = ')';
}
ft_strdel(&fname);
return (fd);
}