android-cloexec-socket¶

socket() should include SOCK_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:

socket(domain, type, SOCK_STREAM);

// becomes

socket(domain, type, SOCK_STREAM | SOCK_CLOEXEC);