diff options
Diffstat (limited to 'deps/openssl/openssl/crypto/mem_sec.c')
| -rw-r--r-- | deps/openssl/openssl/crypto/mem_sec.c | 94 |
1 files changed, 52 insertions, 42 deletions
diff --git a/deps/openssl/openssl/crypto/mem_sec.c b/deps/openssl/openssl/crypto/mem_sec.c index 1ccf68cc93..9e0f6702f4 100644 --- a/deps/openssl/openssl/crypto/mem_sec.c +++ b/deps/openssl/openssl/crypto/mem_sec.c @@ -1,5 +1,6 @@ /* * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 2004-2014, Akamai Technologies. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy @@ -8,33 +9,31 @@ */ /* - * Copyright 2004-2014, Akamai Technologies. All Rights Reserved. - * This file is distributed under the terms of the OpenSSL license. - */ - -/* * This file is in two halves. The first half implements the public API * to be used by external consumers, and to be used by OpenSSL to store * data in a "secure arena." The second half implements the secure arena. * For details on that implementation, see below (look for uppercase * "SECURE HEAP IMPLEMENTATION"). */ +#include "e_os.h" #include <openssl/crypto.h> -#include <e_os.h> #include <string.h> -/* e_os.h includes unistd.h, which defines _POSIX_VERSION */ -#if !defined(OPENSSL_NO_SECURE_MEMORY) && defined(OPENSSL_SYS_UNIX) \ - && ( (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L) \ - || defined(__sun) || defined(__hpux) || defined(__sgi) \ - || defined(__osf__) ) -# define IMPLEMENTED +/* e_os.h defines OPENSSL_SECURE_MEMORY if secure memory can be implemented */ +#ifdef OPENSSL_SECURE_MEMORY # include <stdlib.h> # include <assert.h> # include <unistd.h> # include <sys/types.h> # include <sys/mman.h> +# if defined(OPENSSL_SYS_LINUX) +# include <sys/syscall.h> +# if defined(SYS_mlock2) +# include <linux/mman.h> +# include <errno.h> +# endif +# endif # include <sys/param.h> # include <sys/stat.h> # include <fcntl.h> @@ -48,7 +47,7 @@ # define MAP_ANON MAP_ANONYMOUS #endif -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY static size_t secure_mem_used; static int secure_mem_initialized; @@ -59,8 +58,8 @@ static CRYPTO_RWLOCK *sec_malloc_lock = NULL; * These are the functions that must be implemented by a secure heap (sh). */ static int sh_init(size_t size, int minsize); -static char *sh_malloc(size_t size); -static void sh_free(char *ptr); +static void *sh_malloc(size_t size); +static void sh_free(void *ptr); static void sh_done(void); static size_t sh_actual_size(char *ptr); static int sh_allocated(const char *ptr); @@ -68,7 +67,7 @@ static int sh_allocated(const char *ptr); int CRYPTO_secure_malloc_init(size_t size, int minsize) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY int ret = 0; if (!secure_mem_initialized) { @@ -86,12 +85,12 @@ int CRYPTO_secure_malloc_init(size_t size, int minsize) return ret; #else return 0; -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ } -int CRYPTO_secure_malloc_done() +int CRYPTO_secure_malloc_done(void) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY if (secure_mem_used == 0) { sh_done(); secure_mem_initialized = 0; @@ -99,22 +98,22 @@ int CRYPTO_secure_malloc_done() sec_malloc_lock = NULL; return 1; } -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ return 0; } -int CRYPTO_secure_malloc_initialized() +int CRYPTO_secure_malloc_initialized(void) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY return secure_mem_initialized; #else return 0; -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ } void *CRYPTO_secure_malloc(size_t num, const char *file, int line) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY void *ret; size_t actual_size; @@ -129,12 +128,12 @@ void *CRYPTO_secure_malloc(size_t num, const char *file, int line) return ret; #else return CRYPTO_malloc(num, file, line); -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ } void *CRYPTO_secure_zalloc(size_t num, const char *file, int line) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY if (secure_mem_initialized) /* CRYPTO_secure_malloc() zeroes allocations when it is implemented */ return CRYPTO_secure_malloc(num, file, line); @@ -144,7 +143,7 @@ void *CRYPTO_secure_zalloc(size_t num, const char *file, int line) void CRYPTO_secure_free(void *ptr, const char *file, int line) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY size_t actual_size; if (ptr == NULL) @@ -161,13 +160,13 @@ void CRYPTO_secure_free(void *ptr, const char *file, int line) CRYPTO_THREAD_unlock(sec_malloc_lock); #else CRYPTO_free(ptr, file, line); -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ } void CRYPTO_secure_clear_free(void *ptr, size_t num, const char *file, int line) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY size_t actual_size; if (ptr == NULL) @@ -188,12 +187,12 @@ void CRYPTO_secure_clear_free(void *ptr, size_t num, return; OPENSSL_cleanse(ptr, num); CRYPTO_free(ptr, file, line); -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ } int CRYPTO_secure_allocated(const void *ptr) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY int ret; if (!secure_mem_initialized) @@ -204,21 +203,21 @@ int CRYPTO_secure_allocated(const void *ptr) return ret; #else return 0; -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ } -size_t CRYPTO_secure_used() +size_t CRYPTO_secure_used(void) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY return secure_mem_used; #else return 0; -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ } size_t CRYPTO_secure_actual_size(void *ptr) { -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY size_t actual_size; CRYPTO_THREAD_write_lock(sec_malloc_lock); @@ -236,7 +235,7 @@ size_t CRYPTO_secure_actual_size(void *ptr) /* * SECURE HEAP IMPLEMENTATION */ -#ifdef IMPLEMENTED +#ifdef OPENSSL_SECURE_MEMORY /* @@ -473,8 +472,19 @@ static int sh_init(size_t size, int minsize) if (mprotect(sh.map_result + aligned, pgsize, PROT_NONE) < 0) ret = 2; +#if defined(OPENSSL_SYS_LINUX) && defined(MLOCK_ONFAULT) && defined(SYS_mlock2) + if (syscall(SYS_mlock2, sh.arena, sh.arena_size, MLOCK_ONFAULT) < 0) { + if (errno == ENOSYS) { + if (mlock(sh.arena, sh.arena_size) < 0) + ret = 2; + } else { + ret = 2; + } + } +#else if (mlock(sh.arena, sh.arena_size) < 0) ret = 2; +#endif #ifdef MADV_DONTDUMP if (madvise(sh.arena, sh.arena_size, MADV_DONTDUMP) < 0) ret = 2; @@ -487,7 +497,7 @@ static int sh_init(size_t size, int minsize) return 0; } -static void sh_done() +static void sh_done(void) { OPENSSL_free(sh.freelist); OPENSSL_free(sh.bittable); @@ -516,7 +526,7 @@ static char *sh_find_my_buddy(char *ptr, int list) return chunk; } -static char *sh_malloc(size_t size) +static void *sh_malloc(size_t size) { ossl_ssize_t list, slist; size_t i; @@ -581,10 +591,10 @@ static char *sh_malloc(size_t size) return chunk; } -static void sh_free(char *ptr) +static void sh_free(void *ptr) { size_t list; - char *buddy; + void *buddy; if (ptr == NULL) return; @@ -633,4 +643,4 @@ static size_t sh_actual_size(char *ptr) OPENSSL_assert(sh_testbit(ptr, list, sh.bittable)); return sh.arena_size / (ONE << list); } -#endif /* IMPLEMENTED */ +#endif /* OPENSSL_SECURE_MEMORY */ |