1 #include "stdio_impl.h"
3 size_t __stdio_write(FILE *f, const unsigned char *buf, size_t len)
5 struct iovec iovs[2] = {
6 { .iov_base = f->wbase, .iov_len = f->wpos-f->wbase },
7 { .iov_base = (void *)buf, .iov_len = len }
9 struct iovec *iov = iovs;
10 size_t rem = iov[0].iov_len + iov[1].iov_len;
15 cnt = syscall(SYS_writev, f->fd, iov, iovcnt);
16 if (cnt == rem) return len;
18 f->wpos = f->wbase = f->wend = 0;
20 return iovcnt == 2 ? 0 : len-iov[0].iov_len;
23 if (cnt > iov[0].iov_len) {
24 cnt -= iov[0].iov_len;
27 iov[0].iov_base = (char *)iov[0].iov_base + cnt;
28 iov[0].iov_len -= cnt;