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April, 26th. 2006:
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PAM_AUTHENTICATE
Section: Linux-PAM Manual (3) Updated: 04/01/2016 Index
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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
-
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.
RETURN VALUES
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.
SEE ALSO
pam_start(3),
pam_setcred(3),
pam_chauthtok(3),
pam_strerror(3),
pam(8)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUES
-
- SEE ALSO
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