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Diffstat (limited to 'doc/man/pam_start.3')
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diff --git a/doc/man/pam_start.3 b/doc/man/pam_start.3 new file mode 100644 index 0000000..b603913 --- /dev/null +++ b/doc/man/pam_start.3 @@ -0,0 +1,117 @@ +'\" t +.\" Title: pam_start +.\" Author: [FIXME: author] [see http://docbook.sf.net/el/author] +.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/> +.\" Date: 06/08/2020 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" Language: English +.\" +.TH "PAM_START" "3" "06/08/2020" "Linux-PAM Manual" "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_start, pam_start_confdir \- initialization of PAM transaction +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\&.h> +.fi +.ft +.HP \w'int\ pam_start('u +.BI "int pam_start(const\ char\ *" "service_name" ", const\ char\ *" "user" ", const\ struct\ pam_conv\ *" "pam_conversation" ", pam_handle_t\ **" "pamh" ");" +.HP \w'int\ pam_start_confdir('u +.BI "int pam_start_confdir(const\ char\ *" "service_name" ", const\ char\ *" "user" ", const\ struct\ pam_conv\ *" "pam_conversation" ", const\ char\ *" "confdir" ", pam_handle_t\ **" "pamh" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_start\fR +function creates the PAM context and initiates the PAM transaction\&. It is the first of the PAM functions that needs to be called by an application\&. The transaction state is contained entirely within the structure identified by this handle, so it is possible to have multiple transactions in parallel\&. But it is not possible to use the same handle for different transactions, a new one is needed for every new context\&. +.PP +The +\fIservice_name\fR +argument specifies the name of the service to apply and will be stored as PAM_SERVICE item in the new context\&. The policy for the service will be read from the file +/etc/pam\&.d/service_name +or, if that file does not exist, from +/etc/pam\&.conf\&. +.PP +The +\fIuser\fR +argument can specify the name of the target user and will be stored as PAM_USER item\&. If the argument is NULL, the module has to ask for this item if necessary\&. +.PP +The +\fIpam_conversation\fR +argument points to a +\fIstruct pam_conv\fR +describing the conversation function to use\&. An application must provide this for direct communication between a loaded module and the application\&. +.PP +Following a successful return (PAM_SUCCESS) the contents of +\fIpamh\fR +is a handle that contains the PAM context for successive calls to the PAM functions\&. In an error case is the content of +\fIpamh\fR +undefined\&. +.PP +The +\fIpam_handle_t\fR +is a blind structure and the application should not attempt to probe it directly for information\&. Instead the PAM library provides the functions +\fBpam_set_item\fR(3) +and +\fBpam_get_item\fR(3)\&. The PAM handle cannot be used for multiple authentications at the same time as long as +\fBpam_end\fR +was not called on it before\&. +.PP +The +\fBpam_start_confdir\fR +function behaves like the +\fBpam_start\fR +function but it also allows setting +\fIconfdir\fR +argument with a path to a directory to override the default (/etc/pam\&.d) path for service policy files\&. If the +\fIconfdir\fR +is NULL, the function works exactly the same as +\fBpam_start\fR\&. +.SH "RETURN VALUES" +.PP +PAM_ABORT +.RS 4 +General failure\&. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\&. +.RE +.PP +PAM_SUCCESS +.RS 4 +Transaction was successfully started\&. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +System error, for example a NULL pointer was submitted instead of a pointer to data\&. +.RE +.SH "SEE ALSO" +.PP +\fBpam_get_data\fR(3), +\fBpam_set_data\fR(3), +\fBpam_end\fR(3), +\fBpam_strerror\fR(3) |