libbinder: separate OS-specific code from Utils.cpp

Separate the OS-specific functions setNonBlocking and
getRandomBytes from Utils.cpp into a separate OS-specific
OS.cpp file that other operating systems can override at
build time.

Bug: 224644083
Test: build Trusty
Change-Id: I2703fb81d4370b5f6264556ae57fdddb0573971a

1 files changed, 0 insertions, 28 deletions

diff --git a/libs/binder/Utils.cpp b/libs/binder/Utils.cpp
index b0289a7196..0314b0fea7 100644
--- a/libs/binder/Utils.cpp
+++ b/libs/binder/Utils.cpp
@@ -16,40 +16,12 @@
 
 #include "Utils.h"
 
-#include <android-base/file.h>
 #include <string.h>
 
-using android::base::ErrnoError;
-using android::base::Result;
-
 namespace android {
 
 void zeroMemory(uint8_t* data, size_t size) {
     memset(data, 0, size);
 }
 
-Result<void> setNonBlocking(android::base::borrowed_fd fd) {
-    int flags = TEMP_FAILURE_RETRY(fcntl(fd.get(), F_GETFL));
-    if (flags == -1) {
-        return ErrnoError() << "Could not get flags for fd";
-    }
-    if (int ret = TEMP_FAILURE_RETRY(fcntl(fd.get(), F_SETFL, flags | O_NONBLOCK)); ret == -1) {
-        return ErrnoError() << "Could not set non-blocking flag for fd";
-    }
-    return {};
-}
-
-status_t getRandomBytes(uint8_t* data, size_t size) {
-    int ret = TEMP_FAILURE_RETRY(open("/dev/urandom", O_RDONLY | O_CLOEXEC | O_NOFOLLOW));
-    if (ret == -1) {
-        return -errno;
-    }
-
-    base::unique_fd fd(ret);
-    if (!base::ReadFully(fd, data, size)) {
-        return -errno;
-    }
-    return OK;
-}
-
 } // namespace android