PAM_AUTHENTICATE(3) Linux-PAM Manual PAM_AUTHENTICATE(3)
pam_authenticate - account authentication
#include <security/pam_appl.h> int pam_authenticate(pam_handle_t *pamh, int flags);
The pam_authenticate function is used to authenticate the user. The user is required to provide an authentication token depending upon the authentication service, usually this is a password, but could also be a finger print. The PAM service module may request that the user enter their username via the conversation mechanism (see pam_start(3) and pam_conv(3)). The name of the authenticated user will be present in the PAM item PAM_USER. This item may be recovered with a call to pam_get_item(3). The pamh argument is an authentication handle obtained by a prior call to pam_start(). The flags argument is the binary or of zero or more of the following values: PAM_SILENT Do not emit any messages. PAM_DISALLOW_NULL_AUTHTOK The PAM module service should return PAM_AUTH_ERR if the user does not have a registered authentication token.
PAM_ABORT The application should exit immediately after calling pam_end(3) first. PAM_AUTH_ERR The user was not authenticated. PAM_CRED_INSUFFICIENT For some reason the application does not have sufficient credentials to authenticate the user. PAM_AUTHINFO_UNAVAIL The modules were not able to access the authentication information. This might be due to a network or hardware failure etc. PAM_MAXTRIES One or more of the authentication modules has reached its limit of tries authenticating the user. Do not try again. PAM_SUCCESS The user was successfully authenticated. PAM_USER_UNKNOWN User unknown to authentication service.
pam_start(3), pam_setcred(3), pam_chauthtok(3), pam_strerror(3), pam(8)
This page is part of the linux-pam (Pluggable Authentication Modules for Linux) project. Information about the project can be found at ⟨http://www.linux-pam.org/⟩. If you have a bug report for this manual page, see ⟨//www.linux-pam.org/⟩. This page was obtained from the tarball Linux-PAM-1.3.0.tar.bz2 fetched from ⟨http://www.linux-pam.org/library/⟩ on 2021-06-20. If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which is not part of the original manual page), send a mail to email@example.com Linux-PAM Manual 04/01/2016 PAM_AUTHENTICATE(3)
Pages that refer to this page: pam(3), pam_acct_mgmt(3), pam_chauthtok(3), pam_fail_delay(3), pam_setcred(3), pam_set_data(3), pam_sm_authenticate(3), pam_sm_setcred(3), PAM(8), pam_filter(8)