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-rw-r--r--lib/libcxx/src/random.cpp181
1 files changed, 73 insertions, 108 deletions
diff --git a/lib/libcxx/src/random.cpp b/lib/libcxx/src/random.cpp
index dfac89f75b..c7073c54da 100644
--- a/lib/libcxx/src/random.cpp
+++ b/lib/libcxx/src/random.cpp
@@ -9,8 +9,8 @@
#include <__config>
#if defined(_LIBCPP_USING_WIN32_RANDOM)
- // Must be defined before including stdlib.h to enable rand_s().
-# define _CRT_RAND_S
+// Must be defined before including stdlib.h to enable rand_s().
+# define _CRT_RAND_S
#endif // defined(_LIBCPP_USING_WIN32_RANDOM)
#include <__system_error/system_error.h>
@@ -22,148 +22,115 @@
#include <stdlib.h>
#if defined(_LIBCPP_USING_GETENTROPY)
-# include <sys/random.h>
+# include <sys/random.h>
#elif defined(_LIBCPP_USING_DEV_RANDOM)
-# include <fcntl.h>
-# include <unistd.h>
-# if __has_include(<sys/ioctl.h>) && __has_include(<linux/random.h>)
-# include <sys/ioctl.h>
-# include <linux/random.h>
-# endif
+# include <fcntl.h>
+# include <unistd.h>
+# if __has_include(<sys/ioctl.h>) && __has_include(<linux/random.h>)
+# include <linux/random.h>
+# include <sys/ioctl.h>
+# endif
#elif defined(_LIBCPP_USING_NACL_RANDOM)
-# include <nacl/nacl_random.h>
+# include <nacl/nacl_random.h>
#elif defined(_LIBCPP_USING_FUCHSIA_CPRNG)
# include <zircon/syscalls.h>
#endif
-
_LIBCPP_BEGIN_NAMESPACE_STD
#if defined(_LIBCPP_USING_GETENTROPY)
-random_device::random_device(const string& __token)
-{
- if (__token != "/dev/urandom")
- __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
+random_device::random_device(const string& __token) {
+ if (__token != "/dev/urandom")
+ __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
}
-random_device::~random_device()
-{
-}
+random_device::~random_device() {}
-unsigned
-random_device::operator()()
-{
- unsigned r;
- size_t n = sizeof(r);
- int err = getentropy(&r, n);
- if (err)
- __throw_system_error(errno, "random_device getentropy failed");
- return r;
+unsigned random_device::operator()() {
+ unsigned r;
+ size_t n = sizeof(r);
+ int err = getentropy(&r, n);
+ if (err)
+ __throw_system_error(errno, "random_device getentropy failed");
+ return r;
}
#elif defined(_LIBCPP_USING_ARC4_RANDOM)
-random_device::random_device(const string&)
-{
-}
+random_device::random_device(const string&) {}
-random_device::~random_device()
-{
-}
+random_device::~random_device() {}
-unsigned
-random_device::operator()()
-{
- return arc4random();
-}
+unsigned random_device::operator()() { return arc4random(); }
#elif defined(_LIBCPP_USING_DEV_RANDOM)
-random_device::random_device(const string& __token)
- : __f_(open(__token.c_str(), O_RDONLY))
-{
- if (__f_ < 0)
- __throw_system_error(errno, ("random_device failed to open " + __token).c_str());
+random_device::random_device(const string& __token) : __f_(open(__token.c_str(), O_RDONLY)) {
+ if (__f_ < 0)
+ __throw_system_error(errno, ("random_device failed to open " + __token).c_str());
}
-random_device::~random_device()
-{
- close(__f_);
-}
+random_device::~random_device() { close(__f_); }
-unsigned
-random_device::operator()()
-{
- unsigned r;
- size_t n = sizeof(r);
- char* p = reinterpret_cast<char*>(&r);
- while (n > 0)
- {
- ssize_t s = read(__f_, p, n);
- if (s == 0)
- __throw_system_error(ENODATA, "random_device got EOF");
- if (s == -1)
- {
- if (errno != EINTR)
- __throw_system_error(errno, "random_device got an unexpected error");
- continue;
- }
- n -= static_cast<size_t>(s);
- p += static_cast<size_t>(s);
+unsigned random_device::operator()() {
+ unsigned r;
+ size_t n = sizeof(r);
+ char* p = reinterpret_cast<char*>(&r);
+ while (n > 0) {
+ ssize_t s = read(__f_, p, n);
+ if (s == 0)
+ __throw_system_error(ENODATA, "random_device got EOF");
+ if (s == -1) {
+ if (errno != EINTR)
+ __throw_system_error(errno, "random_device got an unexpected error");
+ continue;
}
- return r;
+ n -= static_cast<size_t>(s);
+ p += static_cast<size_t>(s);
+ }
+ return r;
}
#elif defined(_LIBCPP_USING_NACL_RANDOM)
-random_device::random_device(const string& __token)
-{
- if (__token != "/dev/urandom")
- __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
- int error = nacl_secure_random_init();
- if (error)
- __throw_system_error(error, ("random device failed to open " + __token).c_str());
+random_device::random_device(const string& __token) {
+ if (__token != "/dev/urandom")
+ __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
+ int error = nacl_secure_random_init();
+ if (error)
+ __throw_system_error(error, ("random device failed to open " + __token).c_str());
}
-random_device::~random_device()
-{
-}
+random_device::~random_device() {}
-unsigned
-random_device::operator()()
-{
- unsigned r;
- size_t n = sizeof(r);
- size_t bytes_written;
- int error = nacl_secure_random(&r, n, &bytes_written);
- if (error != 0)
- __throw_system_error(error, "random_device failed getting bytes");
- else if (bytes_written != n)
- __throw_runtime_error("random_device failed to obtain enough bytes");
- return r;
+unsigned random_device::operator()() {
+ unsigned r;
+ size_t n = sizeof(r);
+ size_t bytes_written;
+ int error = nacl_secure_random(&r, n, &bytes_written);
+ if (error != 0)
+ __throw_system_error(error, "random_device failed getting bytes");
+ else if (bytes_written != n)
+ __throw_runtime_error("random_device failed to obtain enough bytes");
+ return r;
}
#elif defined(_LIBCPP_USING_WIN32_RANDOM)
-random_device::random_device(const string& __token)
-{
- if (__token != "/dev/urandom")
- __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
+random_device::random_device(const string& __token) {
+ if (__token != "/dev/urandom")
+ __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
}
-random_device::~random_device()
-{
-}
+random_device::~random_device() {}
-unsigned
-random_device::operator()()
-{
- unsigned r;
- errno_t err = rand_s(&r);
- if (err)
- __throw_system_error(err, "random_device rand_s failed.");
- return r;
+unsigned random_device::operator()() {
+ unsigned r;
+ errno_t err = rand_s(&r);
+ if (err)
+ __throw_system_error(err, "random_device rand_s failed.");
+ return r;
}
#elif defined(_LIBCPP_USING_FUCHSIA_CPRNG)
@@ -188,12 +155,10 @@ unsigned random_device::operator()() {
}
#else
-#error "Random device not implemented for this architecture"
+# error "Random device not implemented for this architecture"
#endif
-double
-random_device::entropy() const noexcept
-{
+double random_device::entropy() const noexcept {
#if defined(_LIBCPP_USING_DEV_RANDOM) && defined(RNDGETENTCNT)
int ent;
if (::ioctl(__f_, RNDGETENTCNT, &ent) < 0)
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-29 05:05:38 +0000