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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | COLOPHON |
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PAM_SETCRED(3) Linux-PAM Manual PAM_SETCRED(3)
pam_setcred - establish / delete user credentials
#include <security/pam_appl.h>
int pam_setcred(pam_handle_t *pamh, int flags);
The pam_setcred function is used to establish, maintain and
delete the credentials of a user. It should be called to set the
credentials after a user has been authenticated and before a
session is opened for the user (with pam_open_session(3)). The
credentials should be deleted after the session has been closed
(with pam_close_session(3)).
A credential is something that the user possesses. It is some
property, such as a Kerberos ticket, or a supplementary group
membership that make up the uniqueness of a given user. On a
Linux system the user's UID and GID's are credentials too.
However, it has been decided that these properties (along with
the default supplementary groups of which the user is a member)
are credentials that should be set directly by the application
and not by PAM. Such credentials should be established, by the
application, prior to a call to this function. For example,
initgroups(2) (or equivalent) should have been performed.
Valid flags, any one of which, may be logically OR'd with
PAM_SILENT, are:
PAM_ESTABLISH_CRED
Initialize the credentials for the user.
PAM_DELETE_CRED
Delete the user's credentials.
PAM_REINITIALIZE_CRED
Fully reinitialize the user's credentials.
PAM_REFRESH_CRED
Extend the lifetime of the existing credentials.
PAM_BUF_ERR
Memory buffer error.
PAM_CRED_ERR
Failed to set user credentials.
PAM_CRED_EXPIRED
User credentials are expired.
PAM_CRED_UNAVAIL
Failed to retrieve user credentials.
PAM_SUCCESS
Data was successful stored.
PAM_SYSTEM_ERR
A NULL pointer was submitted as PAM handle, the function was
called by a module or another system error occurred.
PAM_USER_UNKNOWN
User is not known to an authentication module.
pam_authenticate(3), pam_open_session(3), pam_close_session(3),
pam_strerror(3)
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 project's upstream Git repository
⟨https://github.com/linux-pam/linux-pam.git⟩ on 2023-12-22. (At
that time, the date of the most recent commit that was found in
the repository was 2023-12-18.) 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
man-pages@man7.org
Linux-PAM Manual 12/22/2023 PAM_SETCRED(3)
Pages that refer to this page: pam(3), pam_authenticate(3), pam_chauthtok(3), pam_sm_setcred(3), pam_filter(8), pam_keyinit(8)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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