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ERR: preserve system error number in a few more places

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It turns out that intialization may change the error number, so we
need to preserve the system error number in functions where
initialization is called for.
These are ERR_get_state() and err_shelve_state()

Fixes #7897

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7902)
This commit is contained in:
Richard Levitte 2018-12-14 19:33:55 +01:00
parent 9a3b5b7664
commit 91c5473035
1 changed files with 5 additions and 0 deletions
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5
crypto/err/err.c
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@ -697,6 +697,7 @@ DEFINE_RUN_ONCE_STATIC(err_do_init)
ERR_STATE *ERR_get_state(void)
{
ERR_STATE *state;
int saveerrno = get_last_sys_error();
if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
return NULL;
@ -728,6 +729,7 @@ ERR_STATE *ERR_get_state(void)
OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
}
set_sys_error(saveerrno);
return state;
}
@ -737,6 +739,8 @@ ERR_STATE *ERR_get_state(void)
*/
int err_shelve_state(void **state)
{
int saveerrno = get_last_sys_error();
if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
return 0;
@ -747,6 +751,7 @@ int err_shelve_state(void **state)
if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
return 0;
set_sys_error(saveerrno);
return 1;
}