diff options
Diffstat (limited to 'src/lib/libcrypto/crypto/arc4random_linux.h')
| -rw-r--r-- | src/lib/libcrypto/crypto/arc4random_linux.h | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/src/lib/libcrypto/crypto/arc4random_linux.h b/src/lib/libcrypto/crypto/arc4random_linux.h deleted file mode 100644 index 879f966391..0000000000 --- a/src/lib/libcrypto/crypto/arc4random_linux.h +++ /dev/null | |||
| @@ -1,88 +0,0 @@ | |||
| 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 | |||
| 31 | static 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__ | ||
| 36 | extern void *__dso_handle; | ||
| 37 | extern 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 | |||
| 43 | static inline void | ||
| 44 | _getentropy_fail(void) | ||
| 45 | { | ||
| 46 | raise(SIGKILL); | ||
| 47 | } | ||
| 48 | |||
| 49 | static volatile sig_atomic_t _rs_forked; | ||
| 50 | |||
| 51 | static inline void | ||
| 52 | _rs_forkhandler(void) | ||
| 53 | { | ||
| 54 | _rs_forked = 1; | ||
| 55 | } | ||
| 56 | |||
| 57 | static 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) { | ||
| 65 | _rs_pid = pid; | ||
| 66 | _rs_forked = 0; | ||
| 67 | if (rs) | ||
| 68 | memset(rs, 0, sizeof(*rs)); | ||
| 69 | } | ||
| 70 | } | ||
| 71 | |||
| 72 | static inline int | ||
| 73 | _rs_allocate(struct _rs **rsp, struct _rsx **rsxp) | ||
| 74 | { | ||
| 75 | if ((*rsp = mmap(NULL, sizeof(**rsp), PROT_READ|PROT_WRITE, | ||
| 76 | MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) | ||
| 77 | return (-1); | ||
| 78 | |||
| 79 | if ((*rsxp = mmap(NULL, sizeof(**rsxp), PROT_READ|PROT_WRITE, | ||
| 80 | MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) { | ||
| 81 | munmap(*rsp, sizeof(**rsp)); | ||
| 82 | *rsp = NULL; | ||
| 83 | return (-1); | ||
| 84 | } | ||
| 85 | |||
| 86 | _ARC4_ATFORK(_rs_forkhandler); | ||
| 87 | return (0); | ||
| 88 | } | ||
