Merge SP1A.210222.001

Change-Id: If3509f3a660e820f4c8c0b29e007faa868e1f089

1 files changed, 15 insertions, 0 deletions

diff --git a/cmds/idmap2/libidmap2/FileUtils.cpp b/cmds/idmap2/libidmap2/FileUtils.cpp
index 3af1f70ebe39..98a4ceabdb94 100644
--- a/cmds/idmap2/libidmap2/FileUtils.cpp
+++ b/cmds/idmap2/libidmap2/FileUtils.cpp
@@ -47,4 +47,19 @@ bool UidHasWriteAccessToPath(uid_t uid ATTRIBUTE_UNUSED, const std::string& path
 }
 #endif
 
+std::string RandomStringForPath(const size_t length) {
+  constexpr char kChars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+  constexpr size_t kCharLastIndex = sizeof(kChars) - 1;
+
+  std::string out_rand;
+  out_rand.reserve(length);
+
+  std::random_device rd;
+  std::uniform_int_distribution<int> dist(0, kCharLastIndex);
+  for (size_t i = 0; i < length; i++) {
+    out_rand[i] = kChars[dist(rd) % (kCharLastIndex)];
+  }
+  return out_rand;
+}
+
 }  // namespace android::idmap2::utils