.\" Title: pam_get_user
.\" Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.74.0
.\" Date: 03/02/2009
.\" Manual: Linux-PAM Manual
.\" Source: Linux-PAM Manual
.\" Language: English
.\"
.TH "PAM_GET_USER" "3" "03/02/2009" "Linux-PAM Manual" "Linux-PAM Manual"
.\" -----------------------------------------------------------------
.\" * (re)Define some macros
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" toupper - uppercase a string (locale-aware)
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.de toupper
.tr aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ
\\$*
.tr aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz
..
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" SH-xref - format a cross-reference to an SH section
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.de SH-xref
.ie n \{\
.\}
.toupper \\$*
.el \{\
\\$*
.\}
..
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" SH - level-one heading that works better for non-TTY output
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.de1 SH
.\" put an extra blank line of space above the head in non-TTY output
.if t \{\
.sp 1
.\}
.sp \\n[PD]u
.nr an-level 1
.set-an-margin
.nr an-prevailing-indent \\n[IN]
.fi
.in \\n[an-margin]u
.ti 0
.HTML-TAG ".NH \\n[an-level]"
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
\." make the size of the head bigger
.ps +3
.ft B
.ne (2v + 1u)
.ie n \{\
.\" if n (TTY output), use uppercase
.toupper \\$*
.\}
.el \{\
.nr an-break-flag 0
.\" if not n (not TTY), use normal case (not uppercase)
\\$1
.in \\n[an-margin]u
.ti 0
.\" if not n (not TTY), put a border/line under subheading
.sp -.6
\l'\n(.lu'
.\}
..
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" SS - level-two heading that works better for non-TTY output
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.de1 SS
.sp \\n[PD]u
.nr an-level 1
.set-an-margin
.nr an-prevailing-indent \\n[IN]
.fi
.in \\n[IN]u
.ti \\n[SN]u
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.ps \\n[PS-SS]u
\." make the size of the head bigger
.ps +2
.ft B
.ne (2v + 1u)
.if \\n[.$] \&\\$*
..
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" BB/BE - put background/screen (filled box) around block of text
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.de BB
.if t \{\
.sp -.5
.br
.in +2n
.ll -2n
.gcolor red
.di BX
.\}
..
.de EB
.if t \{\
.if "\\$2"adjust-for-leading-newline" \{\
.sp -1
.\}
.br
.di
.in
.ll
.gcolor
.nr BW \\n(.lu-\\n(.i
.nr BH \\n(dn+.5v
.ne \\n(BHu+.5v
.ie "\\$2"adjust-for-leading-newline" \{\
\M[\\$1]\h'1n'\v'+.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[]
.\}
.el \{\
\M[\\$1]\h'1n'\v'-.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[]
.\}
.in 0
.sp -.5v
.nf
.BX
.in
.sp .5v
.fi
.\}
..
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" BM/EM - put colored marker in margin next to block of text
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.de BM
.if t \{\
.br
.ll -2n
.gcolor red
.di BX
.\}
..
.de EM
.if t \{\
.br
.di
.ll
.gcolor
.nr BH \\n(dn
.ne \\n(BHu
\M[\\$1]\D'P -.75n 0 0 \\n(BHu -(\\n[.i]u - \\n(INu - .75n) 0 0 -\\n(BHu'\M[]
.in 0
.nf
.BX
.in
.fi
.\}
..
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "Name"
pam_get_user \- get user name
.SH "Synopsis"
.sp
.ft B
.fam C
.ps -1
.nf
#include
.fi
.fam
.ps +1
.ft
.fam C
.HP \w'int\ pam_get_user('u
.BI "int pam_get_user(const\ pam_handle_t\ *" "pamh" ", const\ char\ **" "user" ", const\ char\ *" "prompt" ");"
.fam
.SH "DESCRIPTION"
.PP
The
\fBpam_get_user\fR
function returns the name of the user specified by
\fBpam_start\fR(3)\&. If no user was specified it what
\fBpam_get_item (pamh, PAM_USER, \&.\&.\&. );\fR
would have returned\&. If this is NULL it obtains the username via the
\fBpam_conv\fR(3)
mechanism, it prompts the user with the first non\-NULL string in the following list:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
The
\fIprompt\fR
argument passed to the function\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
What is returned by pam_get_item (pamh, PAM_USER_PROMPT, \&.\&.\&. );
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
The default prompt: "login: "
.RE
.PP
By whatever means the username is obtained, a pointer to it is returned as the contents of
\fI*user\fR\&. Note, this memory should
\fBnot\fR
be
\fIfree()\fR\'d or
\fImodified\fR
by the module\&.
.PP
This function sets the
\fIPAM_USER\fR
item associated with the
\fBpam_set_item\fR(3)
and
\fBpam_get_item\fR(3)
functions\&.
.SH "RETURN VALUES"
.PP
PAM_SUCCESS
.RS 4
User name was successful retrieved\&.
.RE
.PP
PAM_SYSTEM_ERR
.RS 4
A NULL pointer was submitted\&.
.RE
.PP
PAM_CONV_ERR
.RS 4
The conversation method supplied by the application failed to obtain the username\&.
.RE
.SH "SEE ALSO"
.PP
\fBpam_end\fR(3),
\fBpam_get_item\fR(3),
\fBpam_set_item\fR(3),
\fBpam_strerror\fR(3)