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These were reported by `mandoc -T lint ...` as warnings: - unusual Xr order - unusual Xr punctuation Fixes made by script in https://github.com/Tarsnap/freebsd-doc-scripts Signed-off-by: Graham Percival <gperciva@tarsnap.com> Reviewed by: mhorne, Alexander Ziaee <concussious.bugzilla@runbox.com> Sponsored by: Tarsnap Backup Inc. Pull Request: https://github.com/freebsd/freebsd-src/pull/1464
169 lines
5.2 KiB
Groff
169 lines
5.2 KiB
Groff
.\" Copyright (c) 2001,2003 Networks Associates Technology, Inc.
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.\" Copyright (c) 2017-2019 Dag-Erling Smørgrav
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.\" Copyright (c) 2018 Thomas Munro
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.\" All rights reserved.
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.\"
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.\" Portions of this software were developed for the FreeBSD Project by
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.\" ThinkSec AS and NAI Labs, the Security Research Division of Network
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.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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.\" ("CBOSS"), as part of the DARPA CHATS research program.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd May 24, 2019
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.Dt PAM_EXEC 8
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.Os
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.Sh NAME
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.Nm pam_exec
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.Nd Exec PAM module
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.Sh SYNOPSIS
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.Op Ar service-name
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.Ar module-type
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.Ar control-flag
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.Pa pam_exec
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.Op Ar arguments
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.Sh DESCRIPTION
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The exec service module for PAM executes the program designated by
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its first argument if no options are specified, with its remaining
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arguments as command-line arguments.
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If options are specified, the program and its arguments follow the last
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option or
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.Cm --
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if the program name conflicts with an option name.
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.Pp
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The following options may be passed before the program and its
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arguments:
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.Bl -tag -width indent
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.It Cm capture_stderr
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Capture text printed by the program to its standard error stream and
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pass it to the conversation function as error messages.
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No attempt is made at buffering the text, so results may vary.
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.It Cm capture_stdout
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Capture text printed by the program to its standard output stream and
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pass it to the conversation function as informational messages.
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No attempt is made at buffering the text, so results may vary.
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.It Cm debug
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Ignored for compatibility reasons.
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.It Cm no_warn
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Ignored for compatibility reasons.
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.It Cm return_prog_exit_status
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Use the program exit status as the return code of the pam_sm_* function.
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It must be a valid return value for this function.
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.It Cm expose_authtok
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Write the authentication token to the program's standard input stream,
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followed by a NUL character.
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Ignored for
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.Fn pam_sm_setcred .
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.It Cm use_first_pass
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If
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.Cm expose_authtok
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was specified, do not prompt for an authentication token if one is not
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already available.
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.It Cm --
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Stop options parsing;
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program and its arguments follow.
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.El
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.Pp
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The child's environment is set to the current PAM environment list,
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as returned by
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.Xr pam_getenvlist 3 .
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In addition, the following PAM items are exported as environment
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variables:
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.Ev PAM_RHOST ,
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.Ev PAM_RUSER ,
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.Ev PAM_SERVICE ,
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.Ev PAM_SM_FUNC ,
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.Ev PAM_TTY
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and
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.Ev PAM_USER .
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.Pp
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The
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.Ev PAM_SM_FUNC
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variable contains the name of the PAM service module function being
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called.
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It may be:
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.Bl -dash -offset indent -compact
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.It
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pam_sm_acct_mgmt
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.It
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pam_sm_authenticate
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.It
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pam_sm_chauthtok
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.It
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pam_sm_close_session
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.It
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pam_sm_open_session
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.It
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pam_sm_setcred
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.El
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.Pp
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If
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.Cm return_prog_exit_status
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is not set (default), the
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.Ev PAM_SM_FUNC
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function returns
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.Er PAM_SUCCESS
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if the program exit status is 0,
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.Er PAM_PERM_DENIED
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otherwise.
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.Pp
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If
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.Cm return_prog_exit_status
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is set, the program exit status is used.
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It should be
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.Er PAM_SUCCESS
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or one of the error codes allowed by the calling
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.Ev PAM_SM_FUNC
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function.
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The valid codes are documented in each function man page.
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If the exit status is not a valid return code,
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.Er PAM_SERVICE_ERR
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is returned.
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Each valid codes numerical value is available as an environment variable
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(eg.\&
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.Ev PAM_SUCESS ,
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.Ev PAM_USER_UNKNOWN ,
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etc).
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This is useful in shell scripts for instance.
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.Sh SEE ALSO
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.Xr pam 3 ,
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.Xr pam_get_item 3 ,
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.Xr pam_sm_acct_mgmt 3 ,
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.Xr pam_sm_authenticate 3 ,
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.Xr pam_sm_chauthtok 3 ,
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.Xr pam_sm_close_session 3 ,
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.Xr pam_sm_open_session 3 ,
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.Xr pam_sm_setcred 3 ,
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.Xr pam.conf 5
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.Sh AUTHORS
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The
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.Nm
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module and this manual page were developed for the
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.Fx
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Project by
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ThinkSec AS and NAI Labs, the Security Research Division of Network
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Associates, Inc.\& under DARPA/SPAWAR contract N66001-01-C-8035
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.Pq Dq CBOSS ,
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as part of the DARPA CHATS research program.
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