int mac_smack_read_fd(int fd, SmackAttr attr, char **label);
int mac_smack_apply(const char *path, SmackAttr attr, const char *label);
int mac_smack_apply_fd(int fd, SmackAttr attr, const char *label);
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int mac_smack_apply_pid(pid_t pid, const char *label);
+int mac_smack_copy(const char *dest, const char *src);