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--- base/rand_util_posix.cc.orig 2024-03-22 08:19:40 UTC
+++ base/rand_util_posix.cc
@@ -23,7 +23,7 @@
#include "base/time/time.h"
#include "build/build_config.h"
-#if (BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)) && !BUILDFLAG(IS_NACL)
+#if (BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)) && !BUILDFLAG(IS_NACL) && !BUILDFLAG(IS_BSD)
#include "third_party/lss/linux_syscall_support.h"
#elif BUILDFLAG(IS_MAC)
// TODO(crbug.com/995996): Waiting for this header to appear in the iOS SDK.
@@ -40,6 +40,7 @@ namespace base {
namespace {
+#if !BUILDFLAG(IS_BSD)
#if BUILDFLAG(IS_AIX)
// AIX has no 64-bit support for O_CLOEXEC.
static constexpr int kOpenFlags = O_RDONLY;
@@ -64,10 +65,11 @@ class URandomFd {
private:
const int fd_;
};
+#endif
#if (BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
BUILDFLAG(IS_ANDROID)) && \
- !BUILDFLAG(IS_NACL)
+ !BUILDFLAG(IS_NACL) && !BUILDFLAG(IS_BSD)
// TODO(pasko): Unify reading kernel version numbers in:
// mojo/core/channel_linux.cc
// chrome/browser/android/seccomp_support_detector.cc
@@ -177,6 +179,7 @@ bool UseBoringSSLForRandBytes() {
namespace {
void RandBytes(span<uint8_t> output, bool avoid_allocation) {
+#if !BUILDFLAG(IS_BSD)
#if !BUILDFLAG(IS_NACL)
// The BoringSSL experiment takes priority over everything else.
if (!avoid_allocation && internal::UseBoringSSLForRandBytes()) {
@@ -215,6 +218,9 @@ void RandBytes(span<uint8_t> output, bool avoid_alloca
const int urandom_fd = GetUrandomFD();
const bool success = ReadFromFD(urandom_fd, as_writable_chars(output));
CHECK(success);
+#else
+ arc4random_buf(output.data(), output.size());
+#endif
}
} // namespace
@@ -239,9 +245,11 @@ void RandBytes(void* output, size_t output_length) {
RandBytes(make_span(static_cast<uint8_t*>(output), output_length));
}
+#if !BUILDFLAG(IS_BSD)
int GetUrandomFD() {
static NoDestructor<URandomFd> urandom_fd;
return urandom_fd->fd();
}
+#endif
} // namespace base
|
