pam_open_session 3 Linux-PAM Manual pam_open_session start PAM session management #include <security/pam_appl.h> int pam_open_session pam_handle_t *pamh int flags The pam_open_session function sets up a user session for a previously successful authenticated user. The session should later be terminated with a call to pam_close_session3 . It should be noted that the effective uid, geteuid2 . of the application should be of sufficient privilege to perform such tasks as creating or mounting the user's home directory for example. The flags argument is the binary or of zero or more of the following values: PAM_SILENT Do not emit any messages. PAM_ABORT General failure. PAM_BUF_ERR Memory buffer error. PAM_SESSION_ERR Session failure. PAM_SUCCESS Session was successful created. pam_close_session3 , pam_strerror3