NAME

pam_chauthtok — perform password related functions within the PAM framework

LIBRARY

Pluggable Authentication Module Library (libpam, -lpam)

SYNOPSIS

#include <sys/types.h>
#include <security/pam_appl.h>

int
pam_chauthtok(pam_handle_t *pamh, int flags);

DESCRIPTION

The pam_chauthtok() function attempts to change the authentication token for the user associated with the pam context specified by the pamh argument.

The flags argument is the binary or of zero or more of the following values:

PAM_SILENT

Do not emit any messages.

PAM_CHANGE_EXPIRED_AUTHTOK

Change only those authentication tokens that have expired.

If any other bits are set, pam_chauthtok() will return PAM_SYMBOL_ERR.

RETURN VALUES

The pam_chauthtok() function returns one of the following values:

[PAM_ABORT]

General failure.

[PAM_AUTHTOK_DISABLE_AGING]

Authentication token aging disabled.

[PAM_AUTHTOK_ERR]

Authentication token failure.

[PAM_AUTHTOK_LOCK_BUSY]

Authentication token lock busy.

[PAM_AUTHTOK_RECOVERY_ERR]

Failed to recover old authentication token.

[PAM_BUF_ERR]

Memory buffer error.

[PAM_CONV_ERR]

Conversation failure.

[PAM_PERM_DENIED]

Permission denied.

[PAM_SERVICE_ERR]

Error in service module.

[PAM_SYMBOL_ERR]

Invalid symbol.

[PAM_SYSTEM_ERR]

System error.

[PAM_TRY_AGAIN]

Try again.

SEE ALSO

pam(3), pam_strerror(3)

STANDARDS

X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules, June 1997.

AUTHORS

The pam_chauthtok() function and this manual page were developed for the FreeBSD Project by ThinkSec AS and Network Associates Laboratories, the Security Research Division of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 (“CBOSS”), as part of the DARPA CHATS research program.

The OpenPAM library is maintained by Dag-Erling Smørgrav <des@des.no>.