shithub: scc

ref: af25b58d05b0700990057ce3f8c853bd43f2ece0
dir: /lib/c/stdio/_flsbuf.c/

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#include <errno.h>
#include <stdio.h>

#include "../libc.h"
#include "../syscall.h"

int
_flsbuf(FILE *fp)
{
	size_t cnt;

	if (fp->flags&_IOREAD)
		return 0;

	cnt = fp->wp - fp->buf;
	if (cnt > 0 && _write(fp->fd, fp->buf, cnt) != cnt) {
		fp->flags |= _IOERR;
		return EOF;
	}
	fp->wp = fp->buf;

	return 0;
}