Vendor import of stripped compiler-rt trunk r375505, the last commitvendor/compiler-rt/compiler-rt-trunk-r375505vendor/compiler-rt

before the upstream Subversion repository was made read-only, and the
LLVM project migrated to GitHub:

https://llvm.org/svn/llvm-project/compiler-rt/trunk@375505

1 files changed, 19 insertions, 1 deletions

diff --git a/lib/profile/InstrProfilingUtil.c b/lib/profile/InstrProfilingUtil.c
index 02d100792db8..13301f341fc5 100644
--- a/lib/profile/InstrProfilingUtil.c
+++ b/lib/profile/InstrProfilingUtil.c
@@ -12,6 +12,7 @@
 #include <windows.h>
 #include "WindowsMMap.h"
 #else
+#include <sys/file.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -39,8 +40,25 @@ COMPILER_RT_WEAK unsigned lprofDirMode = 0755;
 COMPILER_RT_VISIBILITY
 void __llvm_profile_recursive_mkdir(char *path) {
   int i;
+  int start = 1;
+
+#if defined(__ANDROID__) && defined(__ANDROID_API__) &&                        \
+    defined(__ANDROID_API_FUTURE__) &&                                         \
+    __ANDROID_API__ == __ANDROID_API_FUTURE__
+  // Avoid spammy selinux denial messages in Android by not attempting to
+  // create directories in GCOV_PREFIX.  These denials occur when creating (or
+  // even attempting to stat()) top-level directories like "/data".
+  //
+  // Do so by ignoring ${GCOV_PREFIX} when invoking mkdir().
+  const char *gcov_prefix = getenv("GCOV_PREFIX");
+  if (gcov_prefix != NULL) {
+    const int gcov_prefix_len = strlen(gcov_prefix);
+    if (strncmp(path, gcov_prefix, gcov_prefix_len) == 0)
+      start = gcov_prefix_len;
+  }
+#endif
 
-  for (i = 1; path[i] != '\0'; ++i) {
+  for (i = start; path[i] != '\0'; ++i) {
     char save = path[i];
     if (!IS_DIR_SEPARATOR(path[i]))
       continue;