1/* Copyright (c) 2017, Google Inc.
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14
15#ifndef OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
16#define OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
17
18#include <openssl/err.h>
19
20#if defined(__cplusplus)
21extern "C" {
22#endif
23
24
25// Private error queue functions.
26
27// ERR_SAVE_STATE contains a saved representation of the error queue. It is
28// slightly more compact than |ERR_STATE| as the error queue will typically not
29// contain |ERR_NUM_ERRORS| entries.
30typedef struct err_save_state_st ERR_SAVE_STATE;
31
32// ERR_SAVE_STATE_free releases all memory associated with |state|.
33OPENSSL_EXPORT void ERR_SAVE_STATE_free(ERR_SAVE_STATE *state);
34
35// ERR_save_state returns a newly-allocated |ERR_SAVE_STATE| structure
36// containing the current state of the error queue or NULL on allocation
37// error. It should be released with |ERR_SAVE_STATE_free|.
38OPENSSL_EXPORT ERR_SAVE_STATE *ERR_save_state(void);
39
40// ERR_restore_state clears the error queue and replaces it with |state|.
41OPENSSL_EXPORT void ERR_restore_state(const ERR_SAVE_STATE *state);
42
43
44#if defined(__cplusplus)
45} // extern C
46
47extern "C++" {
48
49BSSL_NAMESPACE_BEGIN
50
51BORINGSSL_MAKE_DELETER(ERR_SAVE_STATE, ERR_SAVE_STATE_free)
52
53BSSL_NAMESPACE_END
54
55} // extern C++
56#endif
57
58#endif // OPENSSL_HEADER_CRYPTO_ERR_INTERNAL_H
59