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-'\" t
-.\" Title: pam_sm_setcred
-.\" Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
-.\" Generator: DocBook XSL Stylesheets v1.79.2 <http://docbook.sf.net/>
-.\" Date: 05/07/2023
-.\" Manual: Linux-PAM Manual
-.\" Source: Linux-PAM
-.\" Language: English
-.\"
-.TH "PAM_SM_SETCRED" "3" "05/07/2023" "Linux\-PAM" "Linux\-PAM Manual"
-.\" -----------------------------------------------------------------
-.\" * Define some portability stuff
-.\" -----------------------------------------------------------------
-.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.\" http://bugs.debian.org/507673
-.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
-.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.ie \n(.g .ds Aq \(aq
-.el .ds Aq '
-.\" -----------------------------------------------------------------
-.\" * set default formatting
-.\" -----------------------------------------------------------------
-.\" disable hyphenation
-.nh
-.\" disable justification (adjust text to left margin only)
-.ad l
-.\" -----------------------------------------------------------------
-.\" * MAIN CONTENT STARTS HERE *
-.\" -----------------------------------------------------------------
-.SH "NAME"
-pam_sm_setcred \- PAM service function to alter credentials
-.SH "SYNOPSIS"
-.sp
-.ft B
-.nf
-#include <security/pam_modules\&.h>
-.fi
-.ft
-.HP \w'int\ pam_sm_setcred('u
-.BI "int pam_sm_setcred(pam_handle_t\ *" "pamh" ", int\ " "flags" ", int\ " "argc" ", const\ char\ **" "argv" ");"
-.SH "DESCRIPTION"
-.PP
-The
-\fBpam_sm_setcred\fR
-function is the service module\*(Aqs implementation of the
-\fBpam_setcred\fR(3)
-interface\&.
-.PP
-This function performs the task of altering the credentials of the user with respect to the corresponding authorization scheme\&. Generally, an authentication module may have access to more information about a user than their authentication token\&. This function is used to make such information available to the application\&. It should only be called
-\fIafter\fR
-the user has been authenticated but before a session has been established\&.
-.PP
-Valid flags, which may be logically OR\*(Aqd with
-\fIPAM_SILENT\fR, are:
-.PP
-PAM_SILENT
-.RS 4
-Do not emit any messages\&.
-.RE
-.PP
-PAM_ESTABLISH_CRED
-.RS 4
-Initialize the credentials for the user\&.
-.RE
-.PP
-PAM_DELETE_CRED
-.RS 4
-Delete the credentials associated with the authentication service\&.
-.RE
-.PP
-PAM_REINITIALIZE_CRED
-.RS 4
-Reinitialize the user credentials\&.
-.RE
-.PP
-PAM_REFRESH_CRED
-.RS 4
-Extend the lifetime of the user credentials\&.
-.RE
-.PP
-The way the
-\fBauth\fR
-stack is navigated in order to evaluate the
-\fBpam_setcred\fR() function call, independent of the
-\fBpam_sm_setcred\fR() return codes, is exactly the same way that it was navigated when evaluating the
-\fBpam_authenticate\fR() library call\&. Typically, if a stack entry was ignored in evaluating
-\fBpam_authenticate\fR(), it will be ignored when libpam evaluates the
-\fBpam_setcred\fR() function call\&. Otherwise, the return codes from each module specific
-\fBpam_sm_setcred\fR() call are treated as
-\fBrequired\fR\&.
-.SH "RETURN VALUES"
-.PP
-PAM_CRED_UNAVAIL
-.RS 4
-This module cannot retrieve the user\*(Aqs credentials\&.
-.RE
-.PP
-PAM_CRED_EXPIRED
-.RS 4
-The user\*(Aqs credentials have expired\&.
-.RE
-.PP
-PAM_CRED_ERR
-.RS 4
-This module was unable to set the credentials of the user\&.
-.RE
-.PP
-PAM_SUCCESS
-.RS 4
-The user credential was successfully set\&.
-.RE
-.PP
-PAM_USER_UNKNOWN
-.RS 4
-The user is not known to this authentication module\&.
-.RE
-.PP
-These, non\-\fIPAM_SUCCESS\fR, return values will typically lead to the credential stack
-\fIfailing\fR\&. The first such error will dominate in the return value of
-\fBpam_setcred\fR()\&.
-.SH "SEE ALSO"
-.PP
-\fBpam\fR(3),
-\fBpam_authenticate\fR(3),
-\fBpam_setcred\fR(3),
-\fBpam_sm_authenticate\fR(3),
-\fBpam_strerror\fR(3),
-\fBPAM\fR(8)