package/hostapd/patches/700-use_dev_urandom.patch

   1 --- a/src/crypto/random.c
   2 +++ b/src/crypto/random.c
   3 @@ -202,16 +202,16 @@ int random_pool_ready(void)
   4
   5         /*
   6          * Try to fetch some more data from the kernel high quality
   7 -        * /dev/random. There may not be enough data available at this point,
   8 +        * /dev/urandom. There may not be enough data available at this point,
   9          * so use non-blocking read to avoid blocking the application
  10          * completely.
  11          */
  12 -       fd = open("/dev/random", O_RDONLY | O_NONBLOCK);
  13 +       fd = open("/dev/urandom", O_RDONLY | O_NONBLOCK);
  14         if (fd < 0) {
  15  #ifndef CONFIG_NO_STDOUT_DEBUG
  16                 int error = errno;
  17 -               perror("open(/dev/random)");
  18 -               wpa_printf(MSG_ERROR, "random: Cannot open /dev/random: %s",
  19 +               perror("open(/dev/urandom)");
  20 +               wpa_printf(MSG_ERROR, "random: Cannot open /dev/urandom: %s",
  21                            strerror(error));
  22  #endif /* CONFIG_NO_STDOUT_DEBUG */
  23                 return -1;
  24 @@ -220,12 +220,12 @@ int random_pool_ready(void)
  25         res = read(fd, dummy_key + dummy_key_avail,
  26                    sizeof(dummy_key) - dummy_key_avail);
  27         if (res < 0) {
  28 -               wpa_printf(MSG_ERROR, "random: Cannot read from /dev/random: "
  29 +               wpa_printf(MSG_ERROR, "random: Cannot read from /dev/urandom: "
  30                            "%s", strerror(errno));
  31                 res = 0;
  32         }
  33         wpa_printf(MSG_DEBUG, "random: Got %u/%u bytes from "
  34 -                  "/dev/random", (unsigned) res,
  35 +                  "/dev/urandom", (unsigned) res,
  36                    (unsigned) (sizeof(dummy_key) - dummy_key_avail));
  37         dummy_key_avail += res;
  38         close(fd);
  39 @@ -234,7 +234,7 @@ int random_pool_ready(void)
  40                 return 1;
  41
  42         wpa_printf(MSG_INFO, "random: Only %u/%u bytes of strong "
  43 -                  "random data available from /dev/random",
  44 +                  "random data available from /dev/urandom",
  45                    (unsigned) dummy_key_avail, (unsigned) sizeof(dummy_key));
  46
  47         if (own_pool_ready >= MIN_READY_MARK ||