Introduce api to track fd ownership in libc.
Add two functions to allow objects that own a file descriptor to
enforce that only they can close their file descriptor.
Use them in FILE* and DIR*.
Bug: http://b/110100358
Test: bionic_unit_tests
Test: aosp/master boots without errors
Test: treehugger
Change-Id: Iecd6e8b26c62217271e0822dc3d2d7888b091a45
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index d6b35fd..b4262da 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1448,6 +1448,11 @@
LIBC_Q { # introduced=Q
global:
__res_randomid;
+ android_fdsan_close_with_tag;
+ android_fdsan_create_owner_tag;
+ android_fdsan_exchange_owner_tag;
+ android_fdsan_get_error_level;
+ android_fdsan_set_error_level;
timespec_get;
} LIBC_P;