man/man3pam/pam_setcred.3pam

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 PAM_SETCRED 3PAM "Jan 10, 2008"
 NAME
pam_setcred - modify or delete user credentials for an authentication service
 SYNOPSIS

cc [ flag ... ] file ... -lpam [ library ... ]
#include <security/pam_appl.h>


int pam_setcred(pam_handle_t *pamh, int flags);


 DESCRIPTION

The pam_setcred() function is used to establish, modify, or delete user
credentials. It is typically called after the user has been authenticated and
after a session has been validated. See pam_authenticate(3PAM) and
pam_acct_mgmt(3PAM).

The user is specified by a prior call to pam_start() or
pam_set_item(), and is referenced by the authentication handle,
pamh. The following flags may be set in the flags field. Note that
the first four flags are mutually exclusive:
PAM_ESTABLISH_CRED

Set user credentials for an authentication service.


PAM_DELETE_CRED

Delete user credentials associated with an authentication service.


PAM_REINITIALIZE_CRED

Reinitialize user credentials.


PAM_REFRESH_CRED

Extend lifetime of user credentials.


PAM_SILENT

Authentication service should not generate any messages.


If no flag is set, PAM_ESTABLISH_CRED is used as the default.
 RETURN VALUES

Upon success, pam_setcred() returns PAM_SUCCESS. In addition to
the error return values described in pam(3PAM) the following values may
be returned upon error:
PAM_CRED_UNAVAIL

Underlying authentication service can not retrieve user credentials
unavailable.


PAM_CRED_EXPIRED

User credentials expired.


PAM_USER_UNKNOWN

User unknown to underlying authentication service.


PAM_CRED_ERR

Failure setting user credentials.


 ATTRIBUTES

See attributes(7) for description of the following attributes:


ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Committed
MT-Level MT-Safe with exceptions


 SEE ALSO

 libpam (3LIB),  pam (3PAM),  pam_acct_mgmt (3PAM),  pam_authenticate (3PAM),  pam_set_item (3PAM),  pam_start (3PAM),  attributes (7)  NOTES

The interfaces in libpam are MT-Safe only if each thread within the
multithreaded application uses its own PAM handle.