1 files changed, 0 insertions, 461 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/utils/os_utils.cpp b/src/libs/3rdparty/botan/src/lib/utils/os_utils.cpp
deleted file mode 100644
index 86e5443c30..0000000000
--- a/src/libs/3rdparty/botan/src/lib/utils/os_utils.cpp
+++ /dev/null
@@ -1,461 +0,0 @@
-/*
-* OS and machine specific utility functions
-* (C) 2015,2016,2017 Jack Lloyd
-* (C) 2016 Daniel Neus
-*
-* Botan is released under the Simplified BSD License (see license.txt)
-*/
-
-#include <botan/internal/os_utils.h>
-#include <botan/cpuid.h>
-#include <botan/exceptn.h>
-#include <botan/mem_ops.h>
-
-#include <chrono>
-#include <cstdlib>
-
-#if defined(BOTAN_TARGET_OS_HAS_EXPLICIT_BZERO)
-  #include <string.h>
-#endif
-
-#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
-  #include <sys/types.h>
-  #include <sys/resource.h>
-  #include <sys/mman.h>
-  #include <signal.h>
-  #include <setjmp.h>
-  #include <unistd.h>
-  #include <errno.h>
-#endif
-
-#if defined(BOTAN_TARGET_OS_HAS_GETAUXVAL)
-  #include <sys/auxv.h>
-#endif
-
-#if defined(BOTAN_TARGET_OS_HAS_WIN32)
-  #define NOMINMAX 1
-  #include <windows.h>
-#endif
-
-namespace Botan {
-
-// Not defined in OS namespace for historical reasons
-void secure_scrub_memory(void* ptr, size_t n)
-   {
-#if defined(BOTAN_TARGET_OS_HAS_RTLSECUREZEROMEMORY)
-   ::RtlSecureZeroMemory(ptr, n);
-
-#elif defined(BOTAN_TARGET_OS_HAS_EXPLICIT_BZERO)
-   ::explicit_bzero(ptr, n);
-
-#elif defined(BOTAN_USE_VOLATILE_MEMSET_FOR_ZERO) && (BOTAN_USE_VOLATILE_MEMSET_FOR_ZERO == 1)
-   /*
-   Call memset through a static volatile pointer, which the compiler
-   should not elide. This construct should be safe in conforming
-   compilers, but who knows. I did confirm that on x86-64 GCC 6.1 and
-   Clang 3.8 both create code that saves the memset address in the
-   data segment and uncondtionally loads and jumps to that address.
-   */
-   static void* (*const volatile memset_ptr)(void*, int, size_t) = std::memset;
-   (memset_ptr)(ptr, 0, n);
-#else
-
-   volatile uint8_t* p = reinterpret_cast<volatile uint8_t*>(ptr);
-
-   for(size_t i = 0; i != n; ++i)
-      p[i] = 0;
-#endif
-   }
-
-uint32_t OS::get_process_id()
-   {
-#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
-   return ::getpid();
-#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
-   return ::GetCurrentProcessId();
-#elif defined(BOTAN_TARGET_OS_IS_INCLUDEOS) || defined(BOTAN_TARGET_OS_IS_LLVM)
-   return 0; // truly no meaningful value
-#else
-   #error "Missing get_process_id"
-#endif
-   }
-
-bool OS::running_in_privileged_state()
-   {
-#if defined(BOTAN_TARGET_OS_HAS_GETAUXVAL) && defined(AT_SECURE)
-   return ::getauxval(AT_SECURE) != 0;
-#elif defined(BOTAN_TARGET_OS_HAS_POSIX1)
-   return (::getuid() != ::geteuid()) || (::getgid() != ::getegid());
-#else
-   return false;
-#endif
-   }
-
-uint64_t OS::get_processor_timestamp()
-   {
-   uint64_t rtc = 0;
-
-#if defined(BOTAN_TARGET_OS_HAS_WIN32)
-   LARGE_INTEGER tv;
-   ::QueryPerformanceCounter(&tv);
-   rtc = tv.QuadPart;
-
-#elif defined(BOTAN_USE_GCC_INLINE_ASM)
-
-#if defined(BOTAN_TARGET_CPU_IS_X86_FAMILY)
-
-   if(CPUID::has_rdtsc())
-      {
-      uint32_t rtc_low = 0, rtc_high = 0;
-      asm volatile("rdtsc" : "=d" (rtc_high), "=a" (rtc_low));
-      rtc = (static_cast<uint64_t>(rtc_high) << 32) | rtc_low;
-      }
-
-#elif defined(BOTAN_TARGET_ARCH_IS_PPC64)
-
-   for(;;)
-      {
-      uint32_t rtc_low = 0, rtc_high = 0, rtc_high2 = 0;
-      asm volatile("mftbu %0" : "=r" (rtc_high));
-      asm volatile("mftb %0" : "=r" (rtc_low));
-      asm volatile("mftbu %0" : "=r" (rtc_high2));
-
-      if(rtc_high == rtc_high2)
-	 {
-         rtc = (static_cast<uint64_t>(rtc_high) << 32) | rtc_low;
-         break;
-	 }
-      }
-
-#elif defined(BOTAN_TARGET_ARCH_IS_ALPHA)
-   asm volatile("rpcc %0" : "=r" (rtc));
-
-   // OpenBSD does not trap access to the %tick register
-#elif defined(BOTAN_TARGET_ARCH_IS_SPARC64) && !defined(BOTAN_TARGET_OS_IS_OPENBSD)
-   asm volatile("rd %%tick, %0" : "=r" (rtc));
-
-#elif defined(BOTAN_TARGET_ARCH_IS_IA64)
-   asm volatile("mov %0=ar.itc" : "=r" (rtc));
-
-#elif defined(BOTAN_TARGET_ARCH_IS_S390X)
-   asm volatile("stck 0(%0)" : : "a" (&rtc) : "memory", "cc");
-
-#elif defined(BOTAN_TARGET_ARCH_IS_HPPA)
-   asm volatile("mfctl 16,%0" : "=r" (rtc)); // 64-bit only?
-
-#else
-   //#warning "OS::get_processor_timestamp not implemented"
-#endif
-
-#endif
-
-   return rtc;
-   }
-
-uint64_t OS::get_high_resolution_clock()
-   {
-   if(uint64_t cpu_clock = OS::get_processor_timestamp())
-      return cpu_clock;
-
-   /*
-   If we got here either we either don't have an asm instruction
-   above, or (for x86) RDTSC is not available at runtime. Try some
-   clock_gettimes and return the first one that works, or otherwise
-   fall back to std::chrono.
-   */
-
-#if defined(BOTAN_TARGET_OS_HAS_CLOCK_GETTIME)
-
-   // The ordering here is somewhat arbitrary...
-   const clockid_t clock_types[] = {
-#if defined(CLOCK_MONOTONIC_HR)
-      CLOCK_MONOTONIC_HR,
-#endif
-#if defined(CLOCK_MONOTONIC_RAW)
-      CLOCK_MONOTONIC_RAW,
-#endif
-#if defined(CLOCK_MONOTONIC)
-      CLOCK_MONOTONIC,
-#endif
-#if defined(CLOCK_PROCESS_CPUTIME_ID)
-      CLOCK_PROCESS_CPUTIME_ID,
-#endif
-#if defined(CLOCK_THREAD_CPUTIME_ID)
-      CLOCK_THREAD_CPUTIME_ID,
-#endif
-   };
-
-   for(clockid_t clock : clock_types)
-      {
-      struct timespec ts;
-      if(::clock_gettime(clock, &ts) == 0)
-         {
-         return (static_cast<uint64_t>(ts.tv_sec) * 1000000000) + static_cast<uint64_t>(ts.tv_nsec);
-         }
-      }
-#endif
-
-   // Plain C++11 fallback
-   auto now = std::chrono::high_resolution_clock::now().time_since_epoch();
-   return std::chrono::duration_cast<std::chrono::nanoseconds>(now).count();
-   }
-
-uint64_t OS::get_system_timestamp_ns()
-   {
-#if defined(BOTAN_TARGET_OS_HAS_CLOCK_GETTIME)
-   struct timespec ts;
-   if(::clock_gettime(CLOCK_REALTIME, &ts) == 0)
-      {
-      return (static_cast<uint64_t>(ts.tv_sec) * 1000000000) + static_cast<uint64_t>(ts.tv_nsec);
-      }
-#endif
-
-   auto now = std::chrono::system_clock::now().time_since_epoch();
-   return std::chrono::duration_cast<std::chrono::nanoseconds>(now).count();
-   }
-
-size_t OS::system_page_size()
-   {
-   const size_t default_page_size = 4096;
-
-#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
-   long p = ::sysconf(_SC_PAGESIZE);
-   if(p > 1)
-      return static_cast<size_t>(p);
-   else
-      return default_page_size;
-#elif defined(BOTAN_TARGET_OS_HAS_VIRTUAL_LOCK)
-   SYSTEM_INFO sys_info;
-   ::GetSystemInfo(&sys_info);
-   return sys_info.dwPageSize;
-#else
-   return default_page_size;
-#endif
-   }
-
-size_t OS::get_memory_locking_limit()
-   {
-#if defined(BOTAN_TARGET_OS_HAS_POSIX1) && defined(RLIMIT_MEMLOCK)
-   /*
-   * If RLIMIT_MEMLOCK is not defined, likely the OS does not support
-   * unprivileged mlock calls.
-   *
-   * Linux defaults to only 64 KiB of mlockable memory per process
-   * (too small) but BSDs offer a small fraction of total RAM (more
-   * than we need). Bound the total mlock size to 512 KiB which is
-   * enough to run the entire test suite without spilling to non-mlock
-   * memory (and thus presumably also enough for many useful
-   * programs), but small enough that we should not cause problems
-   * even if many processes are mlocking on the same machine.
-   */
-   size_t mlock_requested = BOTAN_MLOCK_ALLOCATOR_MAX_LOCKED_KB;
-
-   /*
-   * Allow override via env variable
-   */
-   if(OS::running_in_privileged_state() == false)
-      {
-      if(const char* env = std::getenv("BOTAN_MLOCK_POOL_SIZE"))
-         {
-         try
-            {
-            const size_t user_req = std::stoul(env, nullptr);
-            mlock_requested = std::min(user_req, mlock_requested);
-            }
-         catch(std::exception&) { /* ignore it */ }
-         }
-      }
-
-   if(mlock_requested > 0)
-      {
-      struct ::rlimit limits;
-
-      ::getrlimit(RLIMIT_MEMLOCK, &limits);
-
-      if(limits.rlim_cur < limits.rlim_max)
-         {
-         limits.rlim_cur = limits.rlim_max;
-         ::setrlimit(RLIMIT_MEMLOCK, &limits);
-         ::getrlimit(RLIMIT_MEMLOCK, &limits);
-         }
-
-      return std::min<size_t>(limits.rlim_cur, mlock_requested * 1024);
-      }
-
-#elif defined(BOTAN_TARGET_OS_HAS_VIRTUAL_LOCK)
-   SIZE_T working_min = 0, working_max = 0;
-   if(!::GetProcessWorkingSetSize(::GetCurrentProcess(), &working_min, &working_max))
-      {
-      return 0;
-      }
-
-   // According to Microsoft MSDN:
-   // The maximum number of pages that a process can lock is equal to the number of pages in its minimum working set minus a small overhead
-   // In the book "Windows Internals Part 2": the maximum lockable pages are minimum working set size - 8 pages 
-   // But the information in the book seems to be inaccurate/outdated
-   // I've tested this on Windows 8.1 x64, Windows 10 x64 and Windows 7 x86
-   // On all three OS the value is 11 instead of 8
-   size_t overhead = OS::system_page_size() * 11ULL;
-   if(working_min > overhead)
-      {
-      size_t lockable_bytes = working_min - overhead;
-      if(lockable_bytes < (BOTAN_MLOCK_ALLOCATOR_MAX_LOCKED_KB * 1024ULL))
-         {
-         return lockable_bytes;
-         }
-      else
-         {
-         return BOTAN_MLOCK_ALLOCATOR_MAX_LOCKED_KB * 1024ULL;
-         }
-      }
-#endif
-
-   // Not supported on this platform
-   return 0;
-   }
-
-void* OS::allocate_locked_pages(size_t length)
-   {
-#if defined(BOTAN_TARGET_OS_HAS_POSIX1) && defined(BOTAN_TARGET_OS_HAS_POSIX_MLOCK)
-
-#if !defined(MAP_NOCORE)
-   #define MAP_NOCORE 0
-#endif
-
-#if !defined(MAP_ANONYMOUS)
-   #define MAP_ANONYMOUS MAP_ANON
-#endif
-
-   void* ptr = ::mmap(nullptr,
-                      length,
-                      PROT_READ | PROT_WRITE,
-                      MAP_ANONYMOUS | MAP_SHARED | MAP_NOCORE,
-                      /*fd*/-1,
-                      /*offset*/0);
-
-   if(ptr == MAP_FAILED)
-      {
-      return nullptr;
-      }
-
-#if defined(MADV_DONTDUMP)
-   ::madvise(ptr, length, MADV_DONTDUMP);
-#endif
-
-   if(::mlock(ptr, length) != 0)
-      {
-      ::munmap(ptr, length);
-      return nullptr; // failed to lock
-      }
-
-   ::memset(ptr, 0, length);
-
-   return ptr;
-#elif defined(BOTAN_TARGET_OS_HAS_VIRTUAL_LOCK)
-   LPVOID ptr = ::VirtualAlloc(nullptr, length, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
-   if(!ptr)
-      {
-      return nullptr;
-      }
-
-   if(::VirtualLock(ptr, length) == 0)
-      {
-      ::VirtualFree(ptr, 0, MEM_RELEASE);
-      return nullptr; // failed to lock
-      }
-
-   return ptr;
-#else
-   BOTAN_UNUSED(length);
-   return nullptr; /* not implemented */
-#endif
-   }
-
-void OS::free_locked_pages(void* ptr, size_t length)
-   {
-   if(ptr == nullptr || length == 0)
-      return;
-
-#if defined(BOTAN_TARGET_OS_HAS_POSIX1) && defined(BOTAN_TARGET_OS_HAS_POSIX_MLOCK)
-   secure_scrub_memory(ptr, length);
-   ::munlock(ptr, length);
-   ::munmap(ptr, length);
-
-#elif defined(BOTAN_TARGET_OS_HAS_VIRTUAL_LOCK)
-   secure_scrub_memory(ptr, length);
-   ::VirtualUnlock(ptr, length);
-   ::VirtualFree(ptr, 0, MEM_RELEASE);
-
-#else
-   // Invalid argument because no way this pointer was allocated by us
-   throw Invalid_Argument("Invalid ptr to free_locked_pages");
-#endif
-   }
-
-#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
-namespace {
-
-static ::sigjmp_buf g_sigill_jmp_buf;
-
-void botan_sigill_handler(int)
-   {
-   siglongjmp(g_sigill_jmp_buf, /*non-zero return value*/1);
-   }
-
-}
-#endif
-
-int OS::run_cpu_instruction_probe(std::function<int ()> probe_fn)
-   {
-   volatile int probe_result = -3;
-
-#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
-   struct sigaction old_sigaction;
-   struct sigaction sigaction;
-
-   sigaction.sa_handler = botan_sigill_handler;
-   sigemptyset(&sigaction.sa_mask);
-   sigaction.sa_flags = 0;
-
-   int rc = ::sigaction(SIGILL, &sigaction, &old_sigaction);
-
-   if(rc != 0)
-      throw Exception("run_cpu_instruction_probe sigaction failed");
-
-   rc = sigsetjmp(g_sigill_jmp_buf, /*save sigs*/1);
-
-   if(rc == 0)
-      {
-      // first call to sigsetjmp
-      probe_result = probe_fn();
-      }
-   else if(rc == 1)
-      {
-      // non-local return from siglongjmp in signal handler: return error
-      probe_result = -1;
-      }
-
-   // Restore old SIGILL handler, if any
-   rc = ::sigaction(SIGILL, &old_sigaction, nullptr);
-   if(rc != 0)
-      throw Exception("run_cpu_instruction_probe sigaction restore failed");
-
-#elif defined(BOTAN_TARGET_OS_IS_WINDOWS) && defined(BOTAN_TARGET_COMPILER_IS_MSVC)
-
-   // Windows SEH
-   __try
-      {
-      probe_result = probe_fn();
-      }
-   __except(::GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION ?
-            EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
-      {
-      probe_result = -1;
-      }
-
-#endif
-
-   return probe_result;
-   }
-
-}