Add ANDROID_DLEXT_FORCE_LOAD flag
This flag allows to force loading of the library
in the case when for some reason multiple ELF files
share the same filename (because the already-loaded
library has been removed and overwritten, for example).
Change-Id: I798d44409ee13d63eaa75d685e99c4d028d2b0c1
diff --git a/libc/include/android/dlext.h b/libc/include/android/dlext.h
index 90daf30..f10a8a2 100644
--- a/libc/include/android/dlext.h
+++ b/libc/include/android/dlext.h
@@ -59,16 +59,28 @@
/* If opening a library using library_fd read it starting at library_fd_offset.
* This flag is only valid when ANDROID_DLEXT_USE_LIBRARY_FD is set.
*/
-
ANDROID_DLEXT_USE_LIBRARY_FD_OFFSET = 0x20,
+ /* When set, do not check if the library has already been loaded by file stat(2)s.
+ *
+ * This flag allows forced loading of the library in the case when for some
+ * reason multiple ELF files share the same filename (because the already-loaded
+ * library has been removed and overwritten, for example).
+ *
+ * Note that if the library has the same dt_soname as an old one and some other
+ * library has the soname in DT_NEEDED list, the first one will be used to resolve any
+ * dependencies.
+ */
+ ANDROID_DLEXT_FORCE_LOAD = 0x40,
+
/* Mask of valid bits */
ANDROID_DLEXT_VALID_FLAG_BITS = ANDROID_DLEXT_RESERVED_ADDRESS |
ANDROID_DLEXT_RESERVED_ADDRESS_HINT |
ANDROID_DLEXT_WRITE_RELRO |
ANDROID_DLEXT_USE_RELRO |
ANDROID_DLEXT_USE_LIBRARY_FD |
- ANDROID_DLEXT_USE_LIBRARY_FD_OFFSET,
+ ANDROID_DLEXT_USE_LIBRARY_FD_OFFSET |
+ ANDROID_DLEXT_FORCE_LOAD,
};
typedef struct {