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611c0053ff
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62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
--- base/rand_util_posix.cc.orig 2022-11-30 08:12:58 UTC
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+++ base/rand_util_posix.cc
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@@ -22,7 +22,7 @@
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#include "base/time/time.h"
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#include "build/build_config.h"
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-#if (BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)) && !BUILDFLAG(IS_NACL)
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+#if (BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)) && !BUILDFLAG(IS_NACL) && !BUILDFLAG(IS_BSD)
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#include "third_party/lss/linux_syscall_support.h"
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#elif BUILDFLAG(IS_MAC)
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// TODO(crbug.com/995996): Waiting for this header to appear in the iOS SDK.
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@@ -46,6 +46,7 @@ static constexpr int kOpenFlags = O_RDONLY;
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static constexpr int kOpenFlags = O_RDONLY | O_CLOEXEC;
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#endif
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+#if !BUILDFLAG(IS_BSD)
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// We keep the file descriptor for /dev/urandom around so we don't need to
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// reopen it (which is expensive), and since we may not even be able to reopen
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// it if we are later put in a sandbox. This class wraps the file descriptor so
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@@ -63,10 +64,11 @@ class URandomFd {
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private:
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const int fd_;
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};
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+#endif
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#if (BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
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BUILDFLAG(IS_ANDROID)) && \
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- !BUILDFLAG(IS_NACL)
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+ !BUILDFLAG(IS_NACL) && !BUILDFLAG(IS_BSD)
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// TODO(pasko): Unify reading kernel version numbers in:
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// mojo/core/channel_linux.cc
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// chrome/browser/android/seccomp_support_detector.cc
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@@ -176,6 +178,7 @@ bool UseBoringSSLForRandBytes() {
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namespace {
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void RandBytes(void* output, size_t output_length, bool avoid_allocation) {
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+#if !BUILDFLAG(IS_BSD)
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#if !BUILDFLAG(IS_NACL)
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// The BoringSSL experiment takes priority over everything else.
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if (!avoid_allocation && internal::UseBoringSSLForRandBytes()) {
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@@ -214,6 +217,9 @@ void RandBytes(void* output, size_t output_length, boo
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const bool success =
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ReadFromFD(urandom_fd, static_cast<char*>(output), output_length);
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CHECK(success);
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+#else
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+ arc4random_buf(static_cast<char*>(output), output_length);
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+#endif
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}
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} // namespace
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@@ -233,9 +239,11 @@ void RandBytes(void* output, size_t output_length) {
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RandBytes(output, output_length, /*avoid_allocation=*/false);
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}
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+#if !BUILDFLAG(IS_BSD)
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int GetUrandomFD() {
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static NoDestructor<URandomFd> urandom_fd;
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return urandom_fd->fd();
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}
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+#endif
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} // namespace base
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