xfopena.c

早期freebsd实现

/*  $Revision: 1.1 $
**
*/
#include <stdio.h>
#include <fcntl.h>


/*
**  Open a file in append mode.  Since not all fopen's set the O_APPEND
**  flag, we do it by hand.
*/
FILE *
xfopena(p)
    char	*p;
{
    int		fd;

    /* We can't trust stdio to really use O_APPEND, so open, then fdopen. */
    fd = open(p, O_WRONLY | O_APPEND | O_CREAT, 0666);
    return fd >= 0 ? fdopen(fd, "a") : NULL;
}