source: azure_iot_hub/trunk/musl-1.1.18/src/stdio/__towrite.c@ 388

#include "stdio_impl.h"

int __towrite(FILE *f)
{
        f->mode |= f->mode-1;
        if (f->flags & (F_NOWR)) {
                f->flags |= F_ERR;
                return EOF;
        }
        /* Clear read buffer (easier than summoning nasal demons) */
        f->rpos = f->rend = 0;

        /* Activate write through the buffer. */
        f->wpos = f->wbase = f->buf;
        f->wend = f->buf + f->buf_size;

        return 0;
}

void __stdio_exit_needed(void);

void __towrite_needs_stdio_exit()
{
        __stdio_exit_needed();
}