diff options
Diffstat (limited to 'crypto/openssl/crypto/rand/md_rand.c')
| -rw-r--r-- | crypto/openssl/crypto/rand/md_rand.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/crypto/openssl/crypto/rand/md_rand.c b/crypto/openssl/crypto/rand/md_rand.c index 04b9d69..349629c 100644 --- a/crypto/openssl/crypto/rand/md_rand.c +++ b/crypto/openssl/crypto/rand/md_rand.c @@ -56,7 +56,7 @@ * [including the GNU Public Licence.] */ /* ==================================================================== - * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. + * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -144,6 +144,7 @@ static int initialized=0; static unsigned int crypto_lock_rand = 0; /* may be set only when a thread * holds CRYPTO_LOCK_RAND * (to prevent double locking) */ +/* access to lockin_thread is synchronized by CRYPTO_LOCK_RAND2 */ static unsigned long locking_thread = 0; /* valid iff crypto_lock_rand is set */ @@ -210,7 +211,14 @@ static void ssleay_rand_add(const void *buf, int num, double add) */ /* check if we already have the lock */ - do_not_lock = crypto_lock_rand && (locking_thread == CRYPTO_thread_id()); + if (crypto_lock_rand) + { + CRYPTO_r_lock(CRYPTO_LOCK_RAND2); + do_not_lock = (locking_thread == CRYPTO_thread_id()); + CRYPTO_r_unlock(CRYPTO_LOCK_RAND2); + } + else + do_not_lock = 0; if (!do_not_lock) CRYPTO_w_lock(CRYPTO_LOCK_RAND); st_idx=state_index; @@ -361,8 +369,10 @@ static int ssleay_rand_bytes(unsigned char *buf, int num) CRYPTO_w_lock(CRYPTO_LOCK_RAND); /* prevent ssleay_rand_bytes() from trying to obtain the lock again */ - crypto_lock_rand = 1; + CRYPTO_w_lock(CRYPTO_LOCK_RAND2); locking_thread = CRYPTO_thread_id(); + CRYPTO_w_unlock(CRYPTO_LOCK_RAND2); + crypto_lock_rand = 1; if (!initialized) { @@ -435,7 +445,6 @@ static int ssleay_rand_bytes(unsigned char *buf, int num) /* before unlocking, we must clear 'crypto_lock_rand' */ crypto_lock_rand = 0; - locking_thread = 0; CRYPTO_w_unlock(CRYPTO_LOCK_RAND); while (num > 0) @@ -521,15 +530,24 @@ static int ssleay_rand_status(void) /* check if we already have the lock * (could happen if a RAND_poll() implementation calls RAND_status()) */ - do_not_lock = crypto_lock_rand && (locking_thread == CRYPTO_thread_id()); + if (crypto_lock_rand) + { + CRYPTO_r_lock(CRYPTO_LOCK_RAND2); + do_not_lock = (locking_thread == CRYPTO_thread_id()); + CRYPTO_r_unlock(CRYPTO_LOCK_RAND2); + } + else + do_not_lock = 0; if (!do_not_lock) { CRYPTO_w_lock(CRYPTO_LOCK_RAND); /* prevent ssleay_rand_bytes() from trying to obtain the lock again */ - crypto_lock_rand = 1; + CRYPTO_w_lock(CRYPTO_LOCK_RAND2); locking_thread = CRYPTO_thread_id(); + CRYPTO_w_unlock(CRYPTO_LOCK_RAND2); + crypto_lock_rand = 1; } if (!initialized) @@ -544,7 +562,6 @@ static int ssleay_rand_status(void) { /* before unlocking, we must clear 'crypto_lock_rand' */ crypto_lock_rand = 0; - locking_thread = 0; CRYPTO_w_unlock(CRYPTO_LOCK_RAND); } |
