diff options
| -rw-r--r-- | crypto/init.c | 47 | ||||
| -rw-r--r-- | include/internal/thread_once.h | 92 | ||||
| -rw-r--r-- | ssl/ssl_init.c | 6 |
3 files changed, 129 insertions, 16 deletions
diff --git a/crypto/init.c b/crypto/init.c index 1736f2d..86419d0 100644 --- a/crypto/init.c +++ b/crypto/init.c @@ -177,12 +177,6 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_nodelete) static CRYPTO_ONCE load_crypto_strings = CRYPTO_ONCE_STATIC_INIT; static int load_crypto_strings_inited = 0; -DEFINE_RUN_ONCE_STATIC(ossl_init_no_load_crypto_strings) -{ - /* Do nothing in this case */ - return 1; -} - DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_strings) { int ret = 1; @@ -201,6 +195,13 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_strings) return ret; } +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_load_crypto_strings, + ossl_init_load_crypto_strings) +{ + /* Do nothing in this case */ + return 1; +} + static CRYPTO_ONCE add_all_ciphers = CRYPTO_ONCE_STATIC_INIT; DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_ciphers) { @@ -218,6 +219,13 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_ciphers) return 1; } +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_ciphers, + ossl_init_add_all_ciphers) +{ + /* Do nothing */ + return 1; +} + static CRYPTO_ONCE add_all_digests = CRYPTO_ONCE_STATIC_INIT; DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_digests) { @@ -235,6 +243,13 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_digests) return 1; } +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_digests, + ossl_init_add_all_digests) +{ + /* Do nothing */ + return 1; +} + static CRYPTO_ONCE add_all_macs = CRYPTO_ONCE_STATIC_INIT; DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_macs) { @@ -252,7 +267,7 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_macs) return 1; } -DEFINE_RUN_ONCE_STATIC(ossl_init_no_add_algs) +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_add_all_macs, ossl_init_add_all_macs) { /* Do nothing */ return 1; @@ -272,7 +287,7 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_config) config_inited = 1; return 1; } -DEFINE_RUN_ONCE_STATIC(ossl_init_no_config) +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_config, ossl_init_config) { #ifdef OPENSSL_INIT_DEBUG fprintf(stderr, @@ -612,8 +627,9 @@ int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) return 0; if ((opts & OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS) - && !RUN_ONCE(&load_crypto_strings, - ossl_init_no_load_crypto_strings)) + && !RUN_ONCE_ALT(&load_crypto_strings, + ossl_init_no_load_crypto_strings, + ossl_init_load_crypto_strings)) return 0; if ((opts & OPENSSL_INIT_LOAD_CRYPTO_STRINGS) @@ -621,7 +637,8 @@ int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) return 0; if ((opts & OPENSSL_INIT_NO_ADD_ALL_CIPHERS) - && !RUN_ONCE(&add_all_ciphers, ossl_init_no_add_algs)) + && !RUN_ONCE_ALT(&add_all_ciphers, ossl_init_no_add_all_ciphers, + ossl_init_add_all_ciphers)) return 0; if ((opts & OPENSSL_INIT_ADD_ALL_CIPHERS) @@ -629,7 +646,8 @@ int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) return 0; if ((opts & OPENSSL_INIT_NO_ADD_ALL_DIGESTS) - && !RUN_ONCE(&add_all_digests, ossl_init_no_add_algs)) + && !RUN_ONCE_ALT(&add_all_digests, ossl_init_no_add_all_digests, + ossl_init_add_all_digests)) return 0; if ((opts & OPENSSL_INIT_ADD_ALL_DIGESTS) @@ -637,7 +655,8 @@ int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) return 0; if ((opts & OPENSSL_INIT_NO_ADD_ALL_MACS) - && !RUN_ONCE(&add_all_macs, ossl_init_no_add_algs)) + && !RUN_ONCE_ALT(&add_all_macs, ossl_init_no_add_all_macs, + ossl_init_add_all_macs)) return 0; if ((opts & OPENSSL_INIT_ADD_ALL_MACS) @@ -649,7 +668,7 @@ int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings) return 0; if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) - && !RUN_ONCE(&config, ossl_init_no_config)) + && !RUN_ONCE_ALT(&config, ossl_init_no_config, ossl_init_config)) return 0; if (opts & OPENSSL_INIT_LOAD_CONFIG) { diff --git a/include/internal/thread_once.h b/include/internal/thread_once.h index c7f0ab2..dcb0c68 100644 --- a/include/internal/thread_once.h +++ b/include/internal/thread_once.h @@ -9,6 +9,20 @@ #include <openssl/crypto.h> +/* + * DEFINE_RUN_ONCE: Define an initialiser function that should be run exactly + * once. It takes no arguments and returns and int result (1 for success or + * 0 for failure). Typical usage might be: + * + * DEFINE_RUN_ONCE(myinitfunc) + * { + * do_some_initialisation(); + * if (init_is_successful()) + * return 1; + * + * return 0; + * } + */ #define DEFINE_RUN_ONCE(init) \ static int init(void); \ int init##_ossl_ret_ = 0; \ @@ -17,10 +31,30 @@ init##_ossl_ret_ = init(); \ } \ static int init(void) + +/* + * DECLARE_RUN_ONCE: Declare an initialiser function that should be run exactly + * once that has been defined in another file via DEFINE_RUN_ONCE(). + */ #define DECLARE_RUN_ONCE(init) \ extern int init##_ossl_ret_; \ void init##_ossl_(void); +/* + * DEFINE_RUN_ONCE_STATIC: Define an initialiser function that should be run + * exactly once. This function will be declared as static within the file. It + * takes no arguments and returns and int result (1 for success or 0 for + * failure). Typical usage might be: + * + * DEFINE_RUN_ONCE_STATIC(myinitfunc) + * { + * do_some_initialisation(); + * if (init_is_successful()) + * return 1; + * + * return 0; + * } + */ #define DEFINE_RUN_ONCE_STATIC(init) \ static int init(void); \ static int init##_ossl_ret_ = 0; \ @@ -31,6 +65,46 @@ static int init(void) /* + * DEFINE_RUN_ONCE_STATIC_ALT: Define an alternative initialiser function. This + * function will be declared as static within the file. It takes no arguments + * and returns and int result (1 for success or 0 for failure). An alternative + * initialiser function is expected to be associated with a primary initialiser + * function defined via DEFINE_ONCE_STATIC where both functions use the same + * CRYPTO_ONCE object to synchronise. Where an alternative initialiser function + * is used only one of the primary or the alternative initialiser function will + * ever be called - and that function will be called exactly once. Definitition + * of an alternative initialiser function MUST occur AFTER the definition of the + * primiary initialiser function. + * + * Typical usage might be: + * + * DEFINE_RUN_ONCE_STATIC(myinitfunc) + * { + * do_some_initialisation(); + * if (init_is_successful()) + * return 1; + * + * return 0; + * } + * + * DEFINE_RUN_ONCE_STATIC_ALT(myaltinitfunc, myinitfunc) + * { + * do_some_alternative_initialisation(); + * if (init_is_successful()) + * return 1; + * + * return 0; + * } + */ +#define DEFINE_RUN_ONCE_STATIC_ALT(initalt, init) \ + static int initalt(void); \ + static void initalt##_ossl_(void) \ + { \ + init##_ossl_ret_ = initalt(); \ + } \ + static int initalt(void) + +/* * RUN_ONCE - use CRYPTO_THREAD_run_once, and check if the init succeeded * @once: pointer to static object of type CRYPTO_ONCE * @init: function name that was previously given to DEFINE_RUN_ONCE, @@ -43,3 +117,21 @@ */ #define RUN_ONCE(once, init) \ (CRYPTO_THREAD_run_once(once, init##_ossl_) ? init##_ossl_ret_ : 0) + +/* + * RUN_ONCE_ALT - use CRYPTO_THREAD_run_once, to run an alternative initialiser + * function and check if that initialisation succeeded + * @once: pointer to static object of type CRYPTO_ONCE + * @initalt: alternative initialiser function name that was previously given to + * DEFINE_RUN_ONCE_STATIC_ALT. This function must return 1 for + * success or 0 for failure. + * @init: primary initialiser function name that was previously given to + * DEFINE_RUN_ONCE_STATIC. This function must return 1 for success or + * 0 for failure. + * + * The return value is 1 on success (*) or 0 in case of error. + * + * (*) by convention, since the init function must return 1 on success. + */ +#define RUN_ONCE_ALT(once, initalt, init) \ + (CRYPTO_THREAD_run_once(once, initalt##_ossl_) ? init##_ossl_ret_ : 0) diff --git a/ssl/ssl_init.c b/ssl/ssl_init.c index 86e6a8d..4ea12fd 100644 --- a/ssl/ssl_init.c +++ b/ssl/ssl_init.c @@ -134,7 +134,8 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_load_ssl_strings) return 1; } -DEFINE_RUN_ONCE_STATIC(ossl_init_no_load_ssl_strings) +DEFINE_RUN_ONCE_STATIC_ALT(ossl_init_no_load_ssl_strings, + ossl_init_load_ssl_strings) { /* Do nothing in this case */ return 1; @@ -208,7 +209,8 @@ int OPENSSL_init_ssl(uint64_t opts, const OPENSSL_INIT_SETTINGS * settings) return 0; if ((opts & OPENSSL_INIT_NO_LOAD_SSL_STRINGS) - && !RUN_ONCE(&ssl_strings, ossl_init_no_load_ssl_strings)) + && !RUN_ONCE_ALT(&ssl_strings, ossl_init_no_load_ssl_strings, + ossl_init_load_ssl_strings)) return 0; if ((opts & OPENSSL_INIT_LOAD_SSL_STRINGS) |