src/stdio/__toread.c

570af302Sopenharmony_ci#include <stdio_impl.h>
570af302Sopenharmony_ci
570af302Sopenharmony_ciint __toread(FILE *f)
570af302Sopenharmony_ci{
570af302Sopenharmony_ci	f->mode |= f->mode-1;
570af302Sopenharmony_ci	if (f->wpos != f->wbase) f->write(f, 0, 0);
570af302Sopenharmony_ci	f->wpos = f->wbase = f->wend = 0;
570af302Sopenharmony_ci	if (f->flags & F_NORD) {
570af302Sopenharmony_ci		f->flags |= F_ERR;
570af302Sopenharmony_ci		return EOF;
570af302Sopenharmony_ci	}
570af302Sopenharmony_ci
570af302Sopenharmony_ci	/* Alloc file buffer if needed */
570af302Sopenharmony_ci	if (__falloc_buf(f) < 0) {
570af302Sopenharmony_ci		f->flags |= F_ERR;
570af302Sopenharmony_ci		return EOF;
570af302Sopenharmony_ci	}
570af302Sopenharmony_ci
570af302Sopenharmony_ci	f->rpos = f->rend = f->buf + f->buf_size;
570af302Sopenharmony_ci
570af302Sopenharmony_ci	return (f->flags & F_EOF) ? EOF : 0;
570af302Sopenharmony_ci}
570af302Sopenharmony_ci
570af302Sopenharmony_cihidden void __toread_needs_stdio_exit()
570af302Sopenharmony_ci{
570af302Sopenharmony_ci	__stdio_exit_needed();
570af302Sopenharmony_ci}