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 occured. 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 tarball Linux-PAM-1.3.0.tar.bz2 fetched from ⟨http://www.linux-pam.org/library/⟩ on 2021-04-01. 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 email@example.com Linux-PAM Manual 04/01/2016 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_tally2(8), pam_tally(8)