drop_privs.h

/* Copyright (c) 2011-2014 Yubico AB
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#ifndef __PAM_U2F_DROP_PRIVS_H_INCLUDED__
#define __PAM_U2F_DROP_PRIVS_H_INCLUDED__

#ifdef HAVE_PAM_MODUTIL_DROP_PRIV
#include <security/pam_modutil.h>
#elif HAVE_OPENPAM_BORROW_CRED
#include <sys/types.h>
#include <security/pam_appl.h>
#include <security/openpam.h>

#define PAM_MODUTIL_DEF_PRIVS(n) /* noop */
#define pam_modutil_drop_priv(pamh, privs, pwd)                                \
  ((openpam_borrow_cred((pamh), (pwd)) == PAM_SUCCESS) ? 0 : -1)
#define pam_modutil_regain_priv(pamh, privs)                                   \
  ((openpam_restore_cred((pamh)) == PAM_SUCCESS) ? 0 : -1)

#else

#error "Please provide an implementation for pam_modutil_{drop,regain}_priv"

#endif /* HAVE_PAM_MODUTIL_DROP_PRIV */
#endif /* __PAM_U2F_DROP_PRIVS_H_INCLUDED__ */