# Extra Clang Tools 21.1.8 documentation

## clang-tidy - android-cloexec-epoll-create1

# android-cloexec-epoll-create1

`epoll_create1()` should include `EPOLL_CLOEXEC` in its type argument to avoid the file descriptor leakage. Without this flag, an opened sensitive file would remain open across a fork+exec to a lower-privileged SELinux domain.

Examples:

    epoll_create1(0);

    // becomes

    epoll_create1(EPOLL_CLOEXEC);