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arc4random_linux.h

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/compat/arc4random_linux.h
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1/* $OpenBSD: arc4random_linux.h,v 1.11 2016/06/30 12:19:51 bcook Exp $ */-
2-
3/*-
4 * Copyright (c) 1996, David Mazieres <dm@uun.org>-
5 * Copyright (c) 2008, Damien Miller <djm@openbsd.org>-
6 * Copyright (c) 2013, Markus Friedl <markus@openbsd.org>-
7 * Copyright (c) 2014, Theo de Raadt <deraadt@openbsd.org>-
8 *-
9 * Permission to use, copy, modify, and distribute this software for any-
10 * purpose with or without fee is hereby granted, provided that the above-
11 * copyright notice and this permission notice appear in all copies.-
12 *-
13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES-
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF-
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR-
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES-
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN-
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF-
19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.-
20 */-
21-
22/*-
23 * Stub functions for portability.-
24 */-
25-
26#include <sys/mman.h>-
27-
28#include <pthread.h>-
29#include <signal.h>-
30-
31static pthread_mutex_t arc4random_mtx = PTHREAD_MUTEX_INITIALIZER;-
32#define _ARC4_LOCK() pthread_mutex_lock(&arc4random_mtx)-
33#define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)-
34-
35#ifdef __GLIBC__-
36extern void *__dso_handle;-
37extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);-
38#define _ARC4_ATFORK(f) __register_atfork(NULL, NULL, (f), __dso_handle)-
39#else-
40#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))-
41#endif-
42-
43static inline void-
44_getentropy_fail(void)-
45{-
46 raise(SIGKILL);-
47}
never executed: end of block
0
48-
49static volatile sig_atomic_t _rs_forked;-
50-
51static inline void-
52_rs_forkhandler(void)-
53{-
54 _rs_forked = 1;-
55}
never executed: end of block
0
56-
57static inline void-
58_rs_forkdetect(void)-
59{-
60 static pid_t _rs_pid = 0;-
61 pid_t pid = getpid();-
62-
63 /* XXX unusual calls to clone() can bypass checks */-
64 if (_rs_pid == 0 || _rs_pid == 1 || _rs_pid != pid || _rs_forked) {
_rs_pid == 0Description
TRUEevaluated 182 times by 27 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
FALSEevaluated 291159 times by 26 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • tlstest
  • ...
_rs_pid == 1Description
TRUEnever evaluated
FALSEevaluated 291159 times by 26 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • tlstest
  • ...
_rs_pid != pidDescription
TRUEnever evaluated
FALSEevaluated 291159 times by 26 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • tlstest
  • ...
_rs_forkedDescription
TRUEnever evaluated
FALSEevaluated 291159 times by 26 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • tlstest
  • ...
0-291159
65 _rs_pid = pid;-
66 _rs_forked = 0;-
67 if (rs)
rsDescription
TRUEnever evaluated
FALSEevaluated 182 times by 27 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
0-182
68 memset(rs, 0, sizeof(*rs));
never executed: memset(rs, 0, sizeof(*rs));
0
69 }
executed 182 times by 27 tests: end of block
Executed by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
182
70}
executed 291341 times by 27 tests: end of block
Executed by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
291341
71-
72static inline int-
73_rs_allocate(struct _rs **rsp, struct _rsx **rsxp)-
74{-
75 if ((*rsp = mmap(NULL, sizeof(**rsp), PROT_READ|PROT_WRITE,
(*rsp = mmap( ... ((void *) -1)Description
TRUEnever evaluated
FALSEevaluated 182 times by 27 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
0-182
76 MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED)
(*rsp = mmap( ... ((void *) -1)Description
TRUEnever evaluated
FALSEevaluated 182 times by 27 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
0-182
77 return (-1);
never executed: return (-1);
0
78-
79 if ((*rsxp = mmap(NULL, sizeof(**rsxp), PROT_READ|PROT_WRITE,
(*rsxp = mmap(... ((void *) -1)Description
TRUEnever evaluated
FALSEevaluated 182 times by 27 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
0-182
80 MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) {
(*rsxp = mmap(... ((void *) -1)Description
TRUEnever evaluated
FALSEevaluated 182 times by 27 tests
Evaluated by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
0-182
81 munmap(*rsp, sizeof(**rsp));-
82 *rsp = NULL;-
83 return (-1);
never executed: return (-1);
0
84 }-
85-
86 _ARC4_ATFORK(_rs_forkhandler);-
87 return (0);
executed 182 times by 27 tests: return (0);
Executed by:
  • arc4randomforktest
  • bntest
  • cipher_list
  • cipherstest
  • clienttest
  • configtest
  • dhtest
  • dsatest
  • ecdhtest
  • ecdsatest
  • ectest
  • exptest
  • igetest
  • libcrypto.so.44.0.1
  • mont
  • pkcs7test
  • randtest
  • rsa_test
  • servertest
  • ssl_versions
  • ssltest
  • timingsafe
  • tls_ext_alpn
  • tls_prf
  • tlsexttest
  • ...
182
88}-
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