Function RedirectFileDescriptorToNull

Sources/Shared/IO/FileSystem.cpp:398–424

#	if defined(DEATH_TARGET_UNIX)
		static bool RedirectFileDescriptorToNull(std::int32_t fd)
		{
			if (fd < 0) {
				return false;
			}

			std::int32_t tempfd;
			do {
				tempfd = ::open("/dev/null", O_RDWR | O_NOCTTY);
			} while (tempfd == -1 && errno == EINTR);

			if (tempfd == -1) {
				return false;
			}

			if (tempfd != fd) {
				if (::dup2(tempfd, fd) == -1) {
					::close(tempfd);
					return false;
				}
				if (::close(tempfd) == -1) {
					return false;
				}
			}

			return true;
		}

		static void TryCloseAllFileDescriptors()
		{