[ASan] Distinguish between read, write and read-write file access modes in OpenFile.

This is to fix mapping coverage files into memory on OSX.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@232936 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/sanitizer_common/sanitizer_coverage_libcdep.cc b/lib/sanitizer_common/sanitizer_coverage_libcdep.cc
index 428e1fcb1..8d827e634 100644
--- a/lib/sanitizer_common/sanitizer_coverage_libcdep.cc
+++ b/lib/sanitizer_common/sanitizer_coverage_libcdep.cc
@@ -175,9 +175,9 @@ void CoverageData::DirectOpen() {
   InternalScopedString path(kMaxPathLength);
   internal_snprintf((char *)path.data(), path.size(), "%s/%zd.sancov.raw",
                     coverage_dir, internal_getpid());
-  pc_fd = OpenFile(path.data(), true);
+  pc_fd = OpenFile(path.data(), RdWr);
   if (internal_iserror(pc_fd)) {
-    Report(" Coverage: failed to open %s for writing\n", path.data());
+    Report(" Coverage: failed to open %s for reading/writing\n", path.data());
     Die();
   }
 
@@ -569,7 +569,7 @@ static int CovOpenFile(InternalScopedString *path, bool packed,
     else
       path->append("%s/%s.%s.packed", coverage_dir, name, extension);
   }
-  uptr fd = OpenFile(path->data(), true);
+  uptr fd = OpenFile(path->data(), WrOnly);
   if (internal_iserror(fd)) {
     Report(" SanitizerCoverage: failed to open %s for writing\n", path->data());
     return -1;