diff options
Diffstat (limited to 'modules/pam_tty_audit')
| -rw-r--r-- | modules/pam_tty_audit/Makefile.am | 30 | ||||
| -rw-r--r-- | modules/pam_tty_audit/Makefile.in | 592 | ||||
| -rw-r--r-- | modules/pam_tty_audit/README | 48 | ||||
| -rw-r--r-- | modules/pam_tty_audit/README.xml | 41 | ||||
| -rw-r--r-- | modules/pam_tty_audit/pam_tty_audit.8 | 80 | ||||
| -rw-r--r-- | modules/pam_tty_audit/pam_tty_audit.8.xml | 145 | ||||
| -rw-r--r-- | modules/pam_tty_audit/pam_tty_audit.c | 346 |
7 files changed, 1282 insertions, 0 deletions
diff --git a/modules/pam_tty_audit/Makefile.am b/modules/pam_tty_audit/Makefile.am new file mode 100644 index 00000000..5bb64585 --- /dev/null +++ b/modules/pam_tty_audit/Makefile.am @@ -0,0 +1,30 @@ +# +# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de> +# + +CLEANFILES = *~ + +EXTRA_DIST = README $(MANS) $(XMLS) + +man_MANS = pam_tty_audit.8 +XMLS = README.xml pam_tty_audit.8.xml + +securelibdir = $(SECUREDIR) + +AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include +AM_LDFLAGS = -no-undefined -avoid-version -module +if HAVE_VERSIONING + AM_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map +endif + +if HAVE_AUDIT_TTY_STATUS + pam_tty_audit_la_LIBADD = -L$(top_builddir)/libpam -lpam + securelib_LTLIBRARIES = pam_tty_audit.la +endif + +if ENABLE_REGENERATE_MAN +noinst_DATA = README +README: pam_tty_audit.8.xml +-include $(top_srcdir)/Make.xml.rules +endif + diff --git a/modules/pam_tty_audit/Makefile.in b/modules/pam_tty_audit/Makefile.in new file mode 100644 index 00000000..54a52ac6 --- /dev/null +++ b/modules/pam_tty_audit/Makefile.in @@ -0,0 +1,592 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# +# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de> +# + + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = 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install-pdf install-pdf-am install-ps \ + install-ps-am install-securelibLTLIBRARIES install-strip \ + installcheck installcheck-am installdirs maintainer-clean \ + maintainer-clean-generic mostlyclean mostlyclean-compile \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags uninstall uninstall-am uninstall-man uninstall-man8 \ + uninstall-securelibLTLIBRARIES + +@ENABLE_REGENERATE_MAN_TRUE@README: pam_tty_audit.8.xml +@ENABLE_REGENERATE_MAN_TRUE@-include $(top_srcdir)/Make.xml.rules +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/modules/pam_tty_audit/README b/modules/pam_tty_audit/README new file mode 100644 index 00000000..ed9369e3 --- /dev/null +++ b/modules/pam_tty_audit/README @@ -0,0 +1,48 @@ +pam_tty_audit — Enable or disable TTY auditing for specified users + +━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ + +DESCRIPTION + +The pam_tty_audit PAM module is used to enable or disable TTY auditing. By +default, the kernel does not audit input on any TTY. + +OPTIONS + +disable=patterns + + For each user matching one of comma-separated glob patterns, disable TTY + auditing. This overrides any previous enable option matchin the same user + name on the command line. + +enable=patterns + + For each user matching one of comma-separated glob patterns, enable TTY + auditing. This overrides any previous disable option matching the same user + name on the command line. + +open_only + + Set the TTY audit flag when opening the session, but do not restore it when + closing the session. Using this option is necessary for some services that + don't fork() to run the authenticated session, such as sudo. + +NOTES + +When TTY auditing is enabled, it is inherited by all processes started by that +user. In particular, daemons restarted by an user will still have TTY auditing +enabled, and audit TTY input even by other users unless auditing for these +users is explicitly disabled. Therefore, it is recommended to use disable=* as +the first option for most daemons using PAM. + +EXAMPLES + +Audit all administrative actions. + +session required pam_tty_audit.so disable=* enable=root + + +AUTHOR + +pam_tty_audit was written by Miloslav Trmač <mitr@redhat.com>. + diff --git a/modules/pam_tty_audit/README.xml b/modules/pam_tty_audit/README.xml new file mode 100644 index 00000000..4dad6bbe --- /dev/null +++ b/modules/pam_tty_audit/README.xml @@ -0,0 +1,41 @@ +<?xml version="1.0" encoding='UTF-8'?> +<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" +"http://www.docbook.org/xml/4.3/docbookx.dtd"> + +<article> + + <articleinfo> + + <title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_tty_audit.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_tty_audit-name"]/*)'/> + </title> + + </articleinfo> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_tty_audit.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tty_audit-description"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_tty_audit.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tty_audit-options"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_tty_audit.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tty_audit-notes"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_tty_audit.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tty_audit-examples"]/*)'/> + </section> + + <section> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_tty_audit.8.xml" xpointer='xpointer(//refsect1[@id = "pam_tty_audit-author"]/*)'/> + </section> + +</article> diff --git a/modules/pam_tty_audit/pam_tty_audit.8 b/modules/pam_tty_audit/pam_tty_audit.8 new file mode 100644 index 00000000..fdf0121b --- /dev/null +++ b/modules/pam_tty_audit/pam_tty_audit.8 @@ -0,0 +1,80 @@ +.\" Title: pam_tty_audit +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_TTY_AUDIT" "8" "04/16/2008" "Linux-PAM Manual" "Linux\-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_tty_audit - Enable or disable TTY auditing for specified users +.SH "SYNOPSIS" +.HP 17 +\fBpam_tty_audit\.so\fR [disable=\fIpatterns\fR] [enable=\fIpatterns\fR] +.SH "DESCRIPTION" +.PP +The pam_tty_audit PAM module is used to enable or disable TTY auditing\. By default, the kernel does not audit input on any TTY\. +.SH "OPTIONS" +.PP +\fBdisable=\fR\fB\fIpatterns\fR\fR +.RS 4 +For each user matching one of comma\-separated glob +\fB\fIpatterns\fR\fR, disable TTY auditing\. This overrides any previous +\fBenable\fR +option matchin the same user name on the command line\. +.RE +.PP +\fBenable=\fR\fB\fIpatterns\fR\fR +.RS 4 +For each user matching one of comma\-separated glob +\fB\fIpatterns\fR\fR, enable TTY auditing\. This overrides any previous +\fBdisable\fR +option matching the same user name on the command line\. +.RE +.PP +\fBopen_only\fR +.RS 4 +Set the TTY audit flag when opening the session, but do not restore it when closing the session\. Using this option is necessary for some services that don\'t +\fBfork()\fR +to run the authenticated session, such as +\fBsudo\fR\. +.RE +.SH "MODULE SERVICES PROVIDED" +.PP +Only the +\fBsession\fR +service is supported\. +.SH "RETURN VALUES" +.PP +PAM_SESSION_ERR +.RS 4 +Error reading or modifying the TTY audit flag\. See the system log for more details\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Success\. +.RE +.SH "NOTES" +.PP +When TTY auditing is enabled, it is inherited by all processes started by that user\. In particular, daemons restarted by an user will still have TTY auditing enabled, and audit TTY input even by other users unless auditing for these users is explicitly disabled\. Therefore, it is recommended to use +\fBdisable=*\fR +as the first option for most daemons using PAM\. +.SH "EXAMPLES" +.PP +Audit all administrative actions\. +.sp +.RS 4 +.nf +session required pam_tty_audit\.so disable=* enable=root + +.fi +.RE +.sp +.SH "AUTHOR" +.PP +pam_tty_audit was written by Miloslav Trmač <mitr@redhat\.com>\. diff --git a/modules/pam_tty_audit/pam_tty_audit.8.xml b/modules/pam_tty_audit/pam_tty_audit.8.xml new file mode 100644 index 00000000..f6f0602f --- /dev/null +++ b/modules/pam_tty_audit/pam_tty_audit.8.xml @@ -0,0 +1,145 @@ +<?xml version="1.0" encoding='UTF-8'?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" + "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"> + +<refentry id="pam_tty_audit"> + + <refmeta> + <refentrytitle>pam_tty_audit</refentrytitle> + <manvolnum>8</manvolnum> + <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_tty_audit-name"> + <refname>pam_tty_audit</refname> + <refpurpose>Enable or disable TTY auditing for specified users</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis id="pam_tty_audit-cmdsynopsis"> + <command>pam_tty_audit.so</command> + <arg choice="opt"> + disable=<replaceable>patterns</replaceable> + </arg> + <arg choice="opt"> + enable=<replaceable>patterns</replaceable> + </arg> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1 id="pam_tty_audit-description"> + <title>DESCRIPTION</title> + <para> + The pam_tty_audit PAM module is used to enable or disable TTY auditing. + By default, the kernel does not audit input on any TTY. + </para> + </refsect1> + + <refsect1 id="pam_tty_audit-options"> + <title>OPTIONS</title> + <variablelist> + <varlistentry> + <term> + <option>disable=<replaceable>patterns</replaceable></option> + </term> + <listitem> + <para> + For each user matching one of comma-separated glob + <option><replaceable>patterns</replaceable></option>, disable + TTY auditing. This overrides any previous <option>enable</option> + option matchin the same user name on the command line. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + <option>enable=<replaceable>patterns</replaceable></option> + </term> + <listitem> + <para> + For each user matching one of comma-separated glob + <option><replaceable>patterns</replaceable></option>, enable + TTY auditing. This overrides any previous <option>disable</option> + option matching the same user name on the command line. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + <option>open_only</option> + </term> + <listitem> + <para> + Set the TTY audit flag when opening the session, but do not restore + it when closing the session. Using this option is necessary for + some services that don't <function>fork()</function> to run the + authenticated session, such as <command>sudo</command>. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_tty_audit-services"> + <title>MODULE SERVICES PROVIDED</title> + <para> + Only the <emphasis remap='B'>session</emphasis> service is supported. + </para> + </refsect1> + + <refsect1 id='pam_tty_audit-return_values'> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_SESSION_ERR</term> + <listitem> + <para> + Error reading or modifying the TTY audit flag. See the system log + for more details. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Success. + </para> + </listitem> + </varlistentry> + + </variablelist> + </refsect1> + + <refsect1 id='pam_tty_audit-notes'> + <title>NOTES</title> + <para> + When TTY auditing is enabled, it is inherited by all processes started by + that user. In particular, daemons restarted by an user will still have + TTY auditing enabled, and audit TTY input even by other users unless + auditing for these users is explicitly disabled. Therefore, it is + recommended to use <option>disable=*</option> as the first option for + most daemons using PAM. + </para> + </refsect1> + + <refsect1 id='pam_tty_audit-examples'> + <title>EXAMPLES</title> + <para> + Audit all administrative actions. + <programlisting> +session required pam_tty_audit.so disable=* enable=root + </programlisting> + </para> + </refsect1> + + <refsect1 id='pam_tty_audit-author'> + <title>AUTHOR</title> + <para> + pam_tty_audit was written by Miloslav Trmač + <mitr@redhat.com>. + </para> + </refsect1> + +</refentry> diff --git a/modules/pam_tty_audit/pam_tty_audit.c b/modules/pam_tty_audit/pam_tty_audit.c new file mode 100644 index 00000000..d57dbbe3 --- /dev/null +++ b/modules/pam_tty_audit/pam_tty_audit.c @@ -0,0 +1,346 @@ +/* Copyright © 2007, 2008 Red Hat, Inc. All rights reserved. + Red Hat author: Miloslav Trmač <mitr@redhat.com> + + Redistribution and use in source and binary forms of Linux-PAM, with + or without modification, are permitted provided that the following + conditions are met: + + 1. Redistributions of source code must retain any existing copyright + notice, and this entire permission notice in its entirety, + including the disclaimer of warranties. + + 2. Redistributions in binary form must reproduce all prior and current + copyright notices, this list of conditions, and the following + disclaimer in the documentation and/or other materials provided + with the distribution. + + 3. The name of any author may not be used to endorse or promote + products derived from this software without their specific prior + written permission. + + ALTERNATIVELY, this product may be distributed under the terms of the + GNU General Public License, in which case the provisions of the GNU + GPL are required INSTEAD OF the above restrictions. (This clause is + necessary due to a potential conflict between the GNU GPL and the + restrictions contained in a BSD-style copyright.) + + THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, + INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + DAMAGE. */ + +#include <errno.h> +#include <fnmatch.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <sys/socket.h> +#include <unistd.h> + +#include <libaudit.h> +#include <linux/netlink.h> + +#define PAM_SM_SESSION + +#include <security/pam_ext.h> +#include <security/pam_modules.h> +#include <security/pam_modutil.h> + +#define DATANAME "pam_tty_audit_last_state" + +/* Open an audit netlink socket */ +static int +nl_open (void) +{ + return socket (AF_NETLINK, SOCK_RAW, NETLINK_AUDIT); +} + +static int +nl_send (int fd, unsigned type, unsigned flags, const void *data, size_t size) +{ + struct sockaddr_nl addr; + struct msghdr msg; + struct nlmsghdr nlm; + struct iovec iov[2]; + ssize_t res; + + nlm.nlmsg_len = NLMSG_LENGTH (size); + nlm.nlmsg_type = type; + nlm.nlmsg_flags = NLM_F_REQUEST | flags; + nlm.nlmsg_seq = 0; + nlm.nlmsg_pid = 0; + iov[0].iov_base = &nlm; + iov[0].iov_len = sizeof (nlm); + iov[1].iov_base = (void *)data; + iov[1].iov_len = size; + addr.nl_family = AF_NETLINK; + addr.nl_pid = 0; + addr.nl_groups = 0; + msg.msg_name = &addr; + msg.msg_namelen = sizeof (addr); + msg.msg_iov = iov; + msg.msg_iovlen = 2; + msg.msg_control = NULL; + msg.msg_controllen = 0; + msg.msg_flags = 0; + res = sendmsg (fd, &msg, 0); + if (res == -1) + return -1; + if ((size_t)res != nlm.nlmsg_len) + { + errno = EIO; + return -1; + } + return 0; +} + +static int +nl_recv (int fd, unsigned type, void *buf, size_t size) +{ + struct sockaddr_nl addr; + struct msghdr msg; + struct nlmsghdr nlm; + struct iovec iov[2]; + ssize_t res; + + again: + iov[0].iov_base = &nlm; + iov[0].iov_len = sizeof (nlm); + msg.msg_name = &addr; + msg.msg_namelen = sizeof (addr); + msg.msg_iov = iov; + msg.msg_iovlen = 1; + msg.msg_control = NULL; + msg.msg_controllen = 0; + if (type != NLMSG_ERROR) + { + res = recvmsg (fd, &msg, MSG_PEEK); + if (res == -1) + return -1; + if (res != NLMSG_LENGTH (0)) + { + errno = EIO; + return -1; + } + if (nlm.nlmsg_type == NLMSG_ERROR) + { + struct nlmsgerr err; + + iov[1].iov_base = &err; + iov[1].iov_len = sizeof (err); + msg.msg_iovlen = 2; + res = recvmsg (fd, &msg, 0); + if (res == -1) + return -1; + if ((size_t)res != NLMSG_LENGTH (sizeof (err)) + || nlm.nlmsg_type != NLMSG_ERROR) + { + errno = EIO; + return -1; + } + if (err.error == 0) + goto again; + errno = -err.error; + return -1; + } + } + if (size != 0) + { + iov[1].iov_base = buf; + iov[1].iov_len = size; + msg.msg_iovlen = 2; + } + res = recvmsg (fd, &msg, 0); + if (res == -1) + return -1; + if ((size_t)res != NLMSG_LENGTH (size) + || nlm.nlmsg_type != type) + { + errno = EIO; + return -1; + } + return 0; +} + +static int +nl_recv_ack (int fd) +{ + struct nlmsgerr err; + + if (nl_recv (fd, NLMSG_ERROR, &err, sizeof (err)) != 0) + return -1; + if (err.error != 0) + { + errno = -err.error; + return -1; + } + return 0; +} + +static void +cleanup_old_status (pam_handle_t *pamh, void *data, int error_status) +{ + (void)pamh; + (void)error_status; + free (data); +} + +int +pam_sm_open_session (pam_handle_t *pamh, int flags, int argc, const char **argv) +{ + enum command { CMD_NONE, CMD_ENABLE, CMD_DISABLE }; + + enum command command; + struct audit_tty_status *old_status, new_status; + const char *user; + int i, fd, open_only; + + (void)flags; + + if (pam_get_user (pamh, &user, NULL) != PAM_SUCCESS) + { + pam_syslog (pamh, LOG_ERR, "error determining target user's name"); + return PAM_SESSION_ERR; + } + + command = CMD_NONE; + open_only = 0; + for (i = 0; i < argc; i++) + { + if (strncmp (argv[i], "enable=", 7) == 0 + || strncmp (argv[i], "disable=", 8) == 0) + { + enum command this_command; + char *copy, *tok_data, *tok; + + this_command = *argv[i] == 'e' ? CMD_ENABLE : CMD_DISABLE; + copy = strdup (strchr (argv[i], '=') + 1); + if (copy == NULL) + return PAM_SESSION_ERR; + for (tok = strtok_r (copy, ",", &tok_data); tok != NULL; + tok = strtok_r (NULL, ",", &tok_data)) + { + if (fnmatch (tok, user, 0) == 0) + { + command = this_command; + break; + } + } + free (copy); + } + else if (strcmp (argv[i], "open_only") == 0) + open_only = 1; + else + { + pam_syslog (pamh, LOG_ERR, "unknown option `%s'", argv[i]); + return PAM_SESSION_ERR; + } + } + if (command == CMD_NONE) + return PAM_SUCCESS; + + old_status = malloc (sizeof (*old_status)); + if (old_status == NULL) + return PAM_SESSION_ERR; + + fd = nl_open (); + if (fd == -1 + || nl_send (fd, AUDIT_TTY_GET, 0, NULL, 0) != 0 + || nl_recv (fd, AUDIT_TTY_GET, old_status, sizeof (*old_status)) != 0) + { + pam_syslog (pamh, LOG_ERR, "error reading current audit status: %m"); + if (fd != -1) + close (fd); + free (old_status); + return PAM_SESSION_ERR; + } + + new_status.enabled = (command == CMD_ENABLE ? 1 : 0); + if (old_status->enabled == new_status.enabled) + { + free (old_status); + goto ok_fd; + } + + if (open_only == 0 + && pam_set_data (pamh, DATANAME, old_status, cleanup_old_status) + != PAM_SUCCESS) + { + pam_syslog (pamh, LOG_ERR, "error saving old audit status"); + close (fd); + free (old_status); + return PAM_SESSION_ERR; + } + + if (nl_send (fd, AUDIT_TTY_SET, NLM_F_ACK, &new_status, + sizeof (new_status)) != 0 + || nl_recv_ack (fd) != 0) + { + pam_syslog (pamh, LOG_ERR, "error setting current audit status: %m"); + close (fd); + if (open_only != 0) + free (old_status); + return PAM_SESSION_ERR; + } + /* Fall through */ + ok_fd: + close (fd); + pam_syslog (pamh, LOG_DEBUG, "changed status from %d to %d", + old_status->enabled, new_status.enabled); + if (open_only != 0) + free (old_status); + return PAM_SUCCESS; +} + +int +pam_sm_close_session (pam_handle_t *pamh, int flags, int argc, + const char **argv) +{ + const void *status_; + + (void)flags; + (void)argc; + (void)argv; + if (pam_get_data (pamh, DATANAME, &status_) == PAM_SUCCESS) + { + const struct audit_tty_status *status; + int fd; + + status = status_; + + fd = nl_open (); + if (fd == -1 + || nl_send (fd, AUDIT_TTY_SET, NLM_F_ACK, status, + sizeof (*status)) != 0 + || nl_recv_ack (fd) != 0) + { + pam_syslog (pamh, LOG_ERR, "error restoring audit status: %m"); + if (fd != -1) + close (fd); + return PAM_SESSION_ERR; + } + close (fd); + pam_syslog (pamh, LOG_ERR, "restored status to %d", status->enabled); + } + return PAM_SUCCESS; +} + +/* static module data */ +#ifdef PAM_STATIC +struct pam_module _pam_tty_audit_modstruct = { + "pam_tty_audit", + NULL, + NULL, + NULL, + pam_sm_open_session, + pam_sm_close_session, + NULL +}; +#endif |