2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
14 # include <openssl/opensslconf.h>
16 # include <openssl/e_os2.h>
17 # include <openssl/crypto.h>
18 # include "internal/nelem.h"
21 * <openssl/e_os2.h> contains what we can justify to make visible to the
22 * outside; this file e_os.h is not part of the exported interface.
27 * set this to a comma-separated list of 'random' device files to try out. By
28 * default, we will try to read at least one of these files
30 # define DEVRANDOM "/dev/urandom", "/dev/random", "/dev/hwrng", "/dev/srandom"
31 # if defined(__linux) && !defined(__ANDROID__)
32 # ifndef DEVRANDOM_WAIT
33 # define DEVRANDOM_WAIT "/dev/random"
36 * Linux kernels 4.8 and later changes how their random device works and there
37 * is no reliable way to tell that /dev/urandom has been seeded -- getentropy(2)
38 * should be used instead.
40 # ifndef DEVRANDOM_SAFE_KERNEL
41 # define DEVRANDOM_SAFE_KERNEL 4, 8
44 * Some operating systems do not permit select(2) on their random devices,
45 * defining this to zero will force the use of read(2) to extract one byte
48 # ifndef DEVRANDM_WAIT_USE_SELECT
49 # define DEVRANDM_WAIT_USE_SELECT 1
52 * Define the shared memory identifier used to indicate if the operating
53 * system has properly seeded the DEVRANDOM source.
55 # ifndef OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID
56 # define OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID 114
61 # if !defined(OPENSSL_NO_EGD) && !defined(DEVRANDOM_EGD)
63 * set this to a comma-separated list of 'egd' sockets to try out. These
64 * sockets will be tried in the order listed in case accessing the device
65 * files listed in DEVRANDOM did not return enough randomness.
67 # define DEVRANDOM_EGD "/var/run/egd-pool", "/dev/egd-pool", "/etc/egd-pool", "/etc/entropy"
70 # if defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)
75 # define get_last_sys_error() errno
76 # define clear_sys_error() errno=0
77 # define set_sys_error(e) errno=(e)
79 /********************************************************************
81 ********************************************************************/
82 # if defined(OPENSSL_SYS_WIN32) && !defined(WIN32)
85 # if defined(OPENSSL_SYS_WINDOWS) && !defined(WINDOWS)
88 # if defined(OPENSSL_SYS_MSDOS) && !defined(MSDOS)
93 # undef get_last_sys_error
94 # undef clear_sys_error
96 # define get_last_sys_error() GetLastError()
97 # define clear_sys_error() SetLastError(0)
98 # define set_sys_error(e) SetLastError(e)
100 # define WIN_CONSOLE_BUG
105 # if (defined(WINDOWS) || defined(MSDOS))
109 # include <sys/stat.h>
110 # define _setmode setmode
111 # define _O_TEXT O_TEXT
112 # define _O_BINARY O_BINARY
113 # define HAS_LFN_SUPPORT(name) (pathconf((name), _PC_NAME_MAX) > 12)
114 # undef DEVRANDOM_EGD /* Neither MS-DOS nor FreeDOS provide 'egd' sockets. */
116 # define DEVRANDOM "/dev/urandom\x24"
117 # endif /* __DJGPP__ */
120 # define S_IFDIR _S_IFDIR
124 # define S_IFMT _S_IFMT
127 # if !defined(WINNT) && !defined(__DJGPP__)
132 # if !defined(_WIN32_WCE) && !defined(_WIN32_WINNT)
134 * Defining _WIN32_WINNT here in e_os.h implies certain "discipline."
135 * Most notably we ought to check for availability of each specific
136 * routine that was introduced after denoted _WIN32_WINNT with
137 * GetProcAddress(). Normally newer functions are masked with higher
138 * _WIN32_WINNT in SDK headers. So that if you wish to use them in
139 * some module, you'd need to override _WIN32_WINNT definition in
140 * the target module in order to "reach for" prototypes, but replace
141 * calls to new functions with indirect calls. Alternatively it
142 * might be possible to achieve the goal by /DELAYLOAD-ing .DLLs
143 * and check for current OS version instead.
145 # define _WIN32_WINNT 0x0501
147 # if defined(_WIN32_WINNT) || defined(_WIN32_WCE)
149 * Just like defining _WIN32_WINNT including winsock2.h implies
150 * certain "discipline" for maintaining [broad] binary compatibility.
151 * As long as structures are invariant among Winsock versions,
152 * it's sufficient to check for specific Winsock2 API availability
153 * at run-time [DSO_global_lookup is recommended]...
155 # include <winsock2.h>
156 # include <ws2tcpip.h>
157 /* yes, they have to be #included prior to <windows.h> */
159 # include <windows.h>
163 # if defined(_WIN32_WCE) && !defined(EACCES)
168 # define strlen(s) _strlen31(s)
169 /* cut strings to 2GB */
170 static __inline unsigned int _strlen31(const char *str)
172 unsigned int len = 0;
173 while (*str && len < 0x80000000U)
175 return len & 0x7FFFFFFF;
179 # if defined(_MSC_VER) && !defined(_WIN32_WCE) && !defined(_DLL) && defined(stdin)
180 # if _MSC_VER>=1300 && _MSC_VER<1600
185 # define stdin (&__iob_func()[0])
186 # define stdout (&__iob_func()[1])
187 # define stderr (&__iob_func()[2])
188 # elif _MSC_VER<1300 && defined(I_CAN_LIVE_WITH_LNK4049)
193 * pre-1300 has __p__iob(), but it's available only in msvcrt.lib,
194 * or in other words with /MD. Declaring implicit import, i.e. with
195 * _imp_ prefix, works correctly with all compiler options, but
196 * without /MD results in LINK warning LNK4049: 'locally defined
197 * symbol "__iob" imported'.
199 extern FILE *_imp___iob;
200 # define stdin (&_imp___iob[0])
201 # define stdout (&_imp___iob[1])
202 # define stderr (&_imp___iob[2])
209 # ifdef OPENSSL_SYS_WINCE
210 # define OPENSSL_NO_POSIX_IO
213 # define EXIT(n) exit(n)
214 # define LIST_SEPARATOR_CHAR ';'
221 # ifdef OPENSSL_SYS_WINCE
222 # define DEFAULT_HOME ""
224 # define DEFAULT_HOME "C:"
227 /* Avoid Visual Studio 13 GetVersion deprecated problems */
228 # if defined(_MSC_VER) && _MSC_VER>=1800
229 # define check_winnt() (1)
230 # define check_win_minplat(x) (1)
232 # define check_winnt() (GetVersion() < 0x80000000)
233 # define check_win_minplat(x) (LOBYTE(LOWORD(GetVersion())) >= (x))
236 # else /* The non-microsoft world */
238 # if defined(OPENSSL_SYS_VXWORKS)
239 # include <sys/times.h>
241 # include <sys/time.h>
244 # ifdef OPENSSL_SYS_VMS
247 * some programs don't include stdlib, so exit() and others give implicit
254 # include <unixlib.h>
256 # define LIST_SEPARATOR_CHAR ','
257 /* We don't have any well-defined random devices on VMS, yet... */
260 We need to do this since VMS has the following coding on status codes:
262 Bits 0-2: status type: 0 = warning, 1 = success, 2 = error, 3 = info ...
263 The important thing to know is that odd numbers are considered
264 good, while even ones are considered errors.
265 Bits 3-15: actual status number
266 Bits 16-27: facility number. 0 is considered "unknown"
267 Bits 28-31: control bits. If bit 28 is set, the shell won't try to
268 output the message (which, for random codes, just looks ugly)
270 So, what we do here is to change 0 to 1 to get the default success status,
271 and everything else is shifted up to fit into the status number field, and
272 the status is tagged as an error, which is what is wanted here.
274 Finally, we add the VMS C facility code 0x35a000, because there are some
275 programs, such as Perl, that will reinterpret the code back to something
276 POSIX. 'man perlvms' explains it further.
278 NOTE: the perlvms manual wants to turn all codes 2 to 255 into success
279 codes (status type = 1). I couldn't disagree more. Fortunately, the
280 status type doesn't seem to bother Perl.
283 # define EXIT(n) exit((n) ? (((n) << 3) | 2 | 0x10000000 | 0x35a000) : 1)
285 # define DEFAULT_HOME "SYS$LOGIN:"
289 # ifdef OPENSSL_UNISTD
290 # include OPENSSL_UNISTD
294 # include <sys/types.h>
295 # ifdef OPENSSL_SYS_WIN32_CYGWIN
300 # define LIST_SEPARATOR_CHAR ':'
301 # define EXIT(n) exit(n)
306 /***********************************************/
308 # if defined(OPENSSL_SYS_WINDOWS)
309 # define strcasecmp _stricmp
310 # define strncasecmp _strnicmp
311 # if (_MSC_VER >= 1310) && !defined(_WIN32_WCE)
313 # define fdopen _fdopen
314 # define close _close
316 # define strdup _strdup
318 # define unlink _unlink
319 # define fileno _fileno
322 # include <strings.h>
326 # if defined(OPENSSL_SYS_VXWORKS)
328 # include <tickLib.h>
330 # include <vxWorks.h>
331 # include <sockLib.h>
332 # include <taskLib.h>
334 # define TTY_STRUCT int
335 # define sleep(a) taskDelay((a) * sysClkRateGet())
338 * NOTE: these are implemented by helpers in database app! if the database is
339 * not linked, we need to implement them elsewhere
341 struct hostent *gethostbyname(const char *name);
342 struct hostent *gethostbyaddr(const char *addr, int length, int type);
343 struct servent *getservbyname(const char *name, const char *proto);
348 # ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
349 # define CRYPTO_memcmp memcmp
352 /* unistd.h defines _POSIX_VERSION */
353 # if !defined(OPENSSL_NO_SECURE_MEMORY) && defined(OPENSSL_SYS_UNIX) \
354 && ( (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L) \
355 || defined(__sun) || defined(__hpux) || defined(__sgi) \
356 || defined(__osf__) )
357 # define OPENSSL_SECURE_MEMORY /* secure memory is implemented */