Fix egd and devrandom source configs

[openssl.git] / crypto / rand / rand_unix.c

diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c
index 8ed40236fd6fc4d33095d188025e6237ff7393aa..869c2d04ddab5858b46effc0477f8bb1494623f2 100644 (file)
--- a/crypto/rand/rand_unix.c
+++ b/crypto/rand/rand_unix.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -19,6 +19,7 @@
 #include "crypto/rand.h"
 #include <stdio.h>
 #include "internal/dso.h"
+
 #ifdef __linux
 # include <sys/syscall.h>
 # ifdef DEVRANDOM_WAIT
@@ -26,12 +27,12 @@
 #  include <sys/utsname.h>
 # endif
 #endif
-#if defined(__FreeBSD__) && !defined(OPENSSL_SYS_UEFI)
+#if (defined(__FreeBSD__) || defined(__NetBSD__)) && !defined(OPENSSL_SYS_UEFI)
 # include <sys/types.h>
 # include <sys/sysctl.h>
 # include <sys/param.h>
 #endif
-#if defined(__OpenBSD__) || defined(__NetBSD__)
+#if defined(__OpenBSD__)
 # include <sys/param.h>
 #endif
 
@@ -81,7 +82,8 @@ static uint64_t get_timer_bits(void);
 #   define OSSL_POSIX_TIMER_OKAY
 #  endif
 # endif
-#endif /* defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__) */
+#endif /* (defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_SYS_VXWORKS))
+          || defined(__DJGPP__) */
 
 #if defined(OPENSSL_RAND_SEED_NONE)
 /* none means none. this simplifies the following logic */
@@ -225,10 +227,12 @@ static ssize_t sysctl_random(char *buf, size_t buflen)
      * when the sysctl returns long and we want to request something not a
      * multiple of longs, which should never be the case.
      */
+#if   defined(__FreeBSD__)
     if (!ossl_assert(buflen % sizeof(long) == 0)) {
         errno = EINVAL;
         return -1;
     }
+#endif
 
     /*
      * On NetBSD before 4.0 KERN_ARND was an alias for KERN_URND, and only
@@ -246,7 +250,7 @@ static ssize_t sysctl_random(char *buf, size_t buflen)
     mib[1] = KERN_ARND;
 
     do {
-        len = buflen;
+        len = buflen > 256 ? 256 : buflen;
         if (sysctl(mib, 2, buf, &len, NULL, 0) == -1)
             return done > 0 ? done : -1;
         done += len;
@@ -261,12 +265,58 @@ static ssize_t sysctl_random(char *buf, size_t buflen)
 #  if defined(OPENSSL_RAND_SEED_GETRANDOM)
 
 #   if defined(__linux) && !defined(__NR_getrandom)
-#    if defined(__arm__) && defined(__NR_SYSCALL_BASE)
+#    if defined(__arm__)
 #     define __NR_getrandom    (__NR_SYSCALL_BASE+384)
 #    elif defined(__i386__)
 #     define __NR_getrandom    355
-#    elif defined(__x86_64__) && !defined(__ILP32__)
-#     define __NR_getrandom    318
+#    elif defined(__x86_64__)
+#     if defined(__ILP32__)
+#      define __NR_getrandom   (__X32_SYSCALL_BIT + 318)
+#     else
+#      define __NR_getrandom   318
+#     endif
+#    elif defined(__xtensa__)
+#     define __NR_getrandom    338
+#    elif defined(__s390__) || defined(__s390x__)
+#     define __NR_getrandom    349
+#    elif defined(__bfin__)
+#     define __NR_getrandom    389
+#    elif defined(__powerpc__)
+#     define __NR_getrandom    359
+#    elif defined(__mips__) || defined(__mips64)
+#     if _MIPS_SIM == _MIPS_SIM_ABI32
+#      define __NR_getrandom   (__NR_Linux + 353)
+#     elif _MIPS_SIM == _MIPS_SIM_ABI64
+#      define __NR_getrandom   (__NR_Linux + 313)
+#     elif _MIPS_SIM == _MIPS_SIM_NABI32
+#      define __NR_getrandom   (__NR_Linux + 317)
+#     endif
+#    elif defined(__hppa__)
+#     define __NR_getrandom    (__NR_Linux + 339)
+#    elif defined(__sparc__)
+#     define __NR_getrandom    347
+#    elif defined(__ia64__)
+#     define __NR_getrandom    1339
+#    elif defined(__alpha__)
+#     define __NR_getrandom    511
+#    elif defined(__sh__)
+#     if defined(__SH5__)
+#      define __NR_getrandom   373
+#     else
+#      define __NR_getrandom   384
+#     endif
+#    elif defined(__avr32__)
+#     define __NR_getrandom    317
+#    elif defined(__microblaze__)
+#     define __NR_getrandom    385
+#    elif defined(__m68k__)
+#     define __NR_getrandom    352
+#    elif defined(__cris__)
+#     define __NR_getrandom    356
+#    elif defined(__aarch64__)
+#     define __NR_getrandom    278
+#    else /* generic */
+#     define __NR_getrandom    278
 #    endif
 #   endif
 
@@ -301,7 +351,7 @@ static ssize_t syscall_random(void *buf, size_t buflen)
 
     if (getentropy != NULL)
         return getentropy(buf, buflen) == 0 ? (ssize_t)buflen : -1;
-#  elif !defined(FIPS_MODE)
+#  elif !defined(FIPS_MODULE)
     union {
         void *p;
         int (*f)(void *buffer, size_t length);
@@ -341,10 +391,11 @@ static struct random_device {
 } random_devices[OSSL_NELEM(random_device_paths)];
 static int keep_random_devices_open = 1;
 
-#   if defined(__linux) && defined(DEVRANDOM_WAIT)
+#   if defined(__linux) && defined(DEVRANDOM_WAIT) \
+       && defined(OPENSSL_RAND_SEED_GETRANDOM)
 static void *shm_addr;
 
-#    if !defined(FIPS_MODE)
+#    if !defined(FIPS_MODULE)
 static void cleanup_shm(void)
 {
     shmdt(shm_addr);
@@ -415,7 +466,7 @@ static int wait_random_seeded(void)
              * If this call fails, it isn't a big problem.
              */
             shm_addr = shmat(shm_id, NULL, SHM_RDONLY);
-#    ifndef FIPS_MODE
+#    ifndef FIPS_MODULE
             /* TODO 3.0: The FIPS provider doesn't have OPENSSL_atexit */
             if (shm_addr != (void *)-1)
                 OPENSSL_atexit(&cleanup_shm);
@@ -424,7 +475,7 @@ static int wait_random_seeded(void)
     }
     return seeded;
 }
-#   else /* defined __linux */
+#   else /* defined __linux && DEVRANDOM_WAIT && OPENSSL_RAND_SEED_GETRANDOM */
 static int wait_random_seeded(void)
 {
     return 1;
@@ -805,4 +856,5 @@ static uint64_t get_timer_bits(void)
 # endif
     return time(NULL);
 }
-#endif /* defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__) */
+#endif /* (defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_SYS_VXWORKS))
+          || defined(__DJGPP__) */