NAME¶

pam_authenticate - account authentication

SYNOPSIS¶

#include <security/pam_appl.h>

int pam_authenticate(pam_handle_t *pamh, int flags);

DESCRIPTION¶

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

PAM_DISALLOW_NULL_AUTHTOK

RETURN VALUES¶

PAM_ABORT

PAM_AUTH_ERR

PAM_CRED_INSUFFICIENT

PAM_AUTHINFO_UNAVAIL

PAM_MAXTRIES

PAM_SUCCESS

PAM_USER_UNKNOWN

SEE ALSO¶

pam_start(3), pam_setcred(3), pam_chauthtok(3), pam_strerror(3), pam(7)