ref: 45ef9d0ba4113aeb7de472d9de35b4a021c8bebb
dir: /sys/src/liboventi/readfully.c/
#include <u.h>
#include <libc.h>
#include <oventi.h>
#include "session.h"
int
vtFdReadFully(int fd, uchar *p, int n)
{
int nn;
while(n > 0) {
nn = vtFdRead(fd, p, n);
if(nn <= 0)
return 0;
n -= nn;
p += nn;
}
return 1;
}