(tv_hi->tv_usec - tv_lo->tv_usec)/1.0e6);
}
+int read_line(FILE *fp, struct buf *b)
+{
+ int ch;
+
+ ch = getc(fp);
+ if (ch == EOF)
+ return (-1);
+ else if (ch != '\n')
+ do { buf_putc(b, ch); ch = getc(fp); } while (ch != EOF && ch != '\n');
+ buf_putz(b);
+ return (0);
+}
+
void carefully_write(int fd, const void *buf, size_t sz)
{
const unsigned char *p = buf;