linux-user: Let user specify random seed

This patch introduces the -seed command line option and the
QEMU_RAND_SEED environment variable for setting the random seed, which
is used for the AT_RANDOM ELF aux entry.

Signed-off-by: Magnus Reftel <reftel@spotify.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Magnus Reftel 2014-10-14 17:18:17 +02:00 committed by Riku Voipio
parent 0a2923f848
commit c5e4a5a95e
2 changed files with 19 additions and 1 deletions

View file

@ -1539,7 +1539,6 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
* Generate 16 random bytes for userspace PRNG seeding (not
* cryptically secure but it's not the aim of QEMU).
*/
srand((unsigned int) time(NULL));
for (i = 0; i < 16; i++) {
k_rand_bytes[i] = rand();
}