Merge pull request #1118 from fdoving/fdov-lockedpool-madvise

lockedpool: avoid sensitive data in core files (Linux and FreeBSD)
RavenProject · Nov 5, 2021 · 20c7167 · 20c7167
2 parents 2a71eb7 + 0fbc719
commit 20c7167
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/support/lockedpool.cpp b/src/support/lockedpool.cpp
@@ -231,6 +231,11 @@ void *PosixLockedPageAllocator::AllocateLocked(size_t len, bool *lockingSuccess)
     addr = mmap(nullptr, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
     if (addr) {
         *lockingSuccess = mlock(addr, len) == 0;
+#if defined(MADV_DONTDUMP) // Linux
+        madvise(addr, len, MADV_DONTDUMP); 
+#elif defined(MADV_NOCORE) // FreeBSD
+        madvise(addr, len, MADV_NOCORE);
+#endif
     }
     return addr;
 }