pam_misc_drop_env 3 Linux-PAM Manual pam_misc_drop_env liberating a locally saved environment #include <security/pam_misc.h> int pam_misc_drop_env char **env This function is defined to complement the pam_getenvlist3 function. It liberates the memory associated with env, overwriting with 0 all memory before free()ing it. pam_getenvlist3 , pam8 The pam_misc_drop_env function is part of the libpam_misc Library and not defined in any standard.