6 files changed, 1662 insertions, 10 deletions
diff --git a/modules/pam_namespace/.cvsignore b/modules/pam_namespace/.cvsignore
deleted file mode 100644
index 59a9578c..00000000
--- a/modules/pam_namespace/.cvsignore
+++ /dev/null
@@ -1,9 +0,0 @@
-*.la
-*.lo
-.deps
-.libs
-Makefile
-Makefile.in
-README
-namespace.conf.5
-pam_namespace.8
diff --git a/modules/pam_namespace/Makefile.in b/modules/pam_namespace/Makefile.in
new file mode 100644
index 00000000..3c5ac49b
--- /dev/null
+++ b/modules/pam_namespace/Makefile.in
@@ -0,0 +1,811 @@
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+
+# 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
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+#
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+	  f=$(am__strip_dir) \
+	  echo " $(namespacedDATA_INSTALL) '$$d$$p' '$(DESTDIR)$(namespaceddir)/$$f'"; \
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+	done
+
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+	@list='$(namespaced_DATA)'; for p in $$list; do \
+	  f=$(am__strip_dir) \
+	  echo " rm -f '$(DESTDIR)$(namespaceddir)/$$f'"; \
+	  rm -f "$(DESTDIR)$(namespaceddir)/$$f"; \
+	done
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+	test -z "$(secureconfdir)" || $(MKDIR_P) "$(DESTDIR)$(secureconfdir)"
+	@list='$(secureconf_DATA)'; for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
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+	  echo " $(secureconfDATA_INSTALL) '$$d$$p' '$(DESTDIR)$(secureconfdir)/$$f'"; \
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+	  $(AWK) '{ files[$$0] = 1; nonemtpy = 1; } \
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+	mkid -fID $$unique
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+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
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+	here=`pwd`; \
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+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
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+	  test "$$failed" -eq 0; \
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+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
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+	    test -f $(distdir)/$$file \
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+all-am: Makefile $(LTLIBRARIES) $(SCRIPTS) $(MANS) $(DATA) $(HEADERS)
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+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
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+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
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+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
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+maintainer-clean-generic:
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+
+@ENABLE_REGENERATE_MAN_TRUE@README: pam_namespace.8.xml namespace.conf.5.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_namespace/README b/modules/pam_namespace/README
new file mode 100644
index 00000000..413b8fd6
--- /dev/null
+++ b/modules/pam_namespace/README
@@ -0,0 +1,204 @@
+pam_namespace — PAM module for configuring namespace for a session
+
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+DESCRIPTION
+
+The pam_namespace PAM module sets up a private namespace for a session with
+polyinstantiated directories. A polyinstantiated directory provides a different
+instance of itself based on user name, or when using SELinux, user name,
+security context or both. If an executable script /etc/security/namespace.init
+exists, it is used to initialize the instance directory after it is set up and
+mounted on the polyinstantiated directory. The script receives the
+polyinstantiated directory path, the instance directory path, flag whether the
+instance directory was newly created (0 for no, 1 for yes), and the user name
+as its arguments.
+
+The pam_namespace module disassociates the session namespace from the parent
+namespace. Any mounts/unmounts performed in the parent namespace, such as
+mounting of devices, are not reflected in the session namespace. To propagate
+selected mount/unmount events from the parent namespace into the disassociated
+session namespace, an administrator may use the special shared-subtree feature.
+For additional information on shared-subtree feature, please refer to the mount
+(8) man page and the shared-subtree description at http://lwn.net/Articles/
+159077 and http://lwn.net/Articles/159092.
+
+OPTIONS
+
+debug
+
+    A lot of debug information is logged using syslog
+
+unmnt_remnt
+
+    For programs such as su and newrole, the login session has already setup a
+    polyinstantiated namespace. For these programs, polyinstantiation is
+    performed based on new user id or security context, however the command
+    first needs to undo the polyinstantiation performed by login. This argument
+    instructs the command to first undo previous polyinstantiation before
+    proceeding with new polyinstantiation based on new id/context
+
+unmnt_only
+
+    For trusted programs that want to undo any existing bind mounts and process
+    instance directories on their own, this argument allows them to unmount
+    currently mounted instance directories
+
+require_selinux
+
+    If selinux is not enabled, return failure
+
+gen_hash
+
+    Instead of using the security context string for the instance name,
+    generate and use its md5 hash.
+
+ignore_config_error
+
+    If a line in the configuration file corresponding to a polyinstantiated
+    directory contains format error, skip that line process the next line.
+    Without this option, pam will return an error to the calling program
+    resulting in termination of the session.
+
+ignore_instance_parent_mode
+
+    Instance parent directories by default are expected to have the restrictive
+    mode of 000. Using this option, an administrator can choose to ignore the
+    mode of the instance parent. This option should be used with caution as it
+    will reduce security and isolation goals of the polyinstantiation
+    mechanism.
+
+no_unmount_on_close
+
+    For certain trusted programs such as newrole, open session is called from a
+    child process while the parent performs close session and pam end
+    functions. For these commands use this option to instruct pam_close_session
+    to not unmount the bind mounted polyinstantiated directory in the parent.
+
+use_current_context
+
+    Useful for services which do not change the SELinux context with setexeccon
+    call. The module will use the current SELinux context of the calling
+    process for the level and context polyinstantiation.
+
+use_default_context
+
+    Useful for services which do not use pam_selinux for changing the SELinux
+    context with setexeccon call. The module will use the default SELinux
+    context of the user for the level and context polyinstantiation.
+
+DESCRIPTION
+
+The pam_namespace.so module allows setup of private namespaces with
+polyinstantiated directories. Directories can be polyinstantiated based on user
+name or, in the case of SELinux, user name, sensitivity level or complete
+security context. If an executable script /etc/security/namespace.init exists,
+it is used to initialize the namespace every time an instance directory is set
+up and mounted. The script receives the polyinstantiated directory path and the
+instance directory path as its arguments.
+
+The /etc/security/namespace.conf file specifies which directories are
+polyinstantiated, how they are polyinstantiated, how instance directories would
+be named, and any users for whom polyinstantiation would not be performed.
+
+When someone logs in, the file namespace.conf is scanned. Comments are marked
+by # characters. Each non comment line represents one polyinstantiated
+directory. The fields are separated by spaces but can be quoted by " characters
+also escape sequences \b, \n, and \t are recognized. The fields are as follows:
+
+polydir instance_prefix method list_of_uids
+
+The first field, polydir, is the absolute pathname of the directory to
+polyinstantiate. The special string $HOME is replaced with the user's home
+directory, and $USER with the username. This field cannot be blank.
+
+The second field, instance_prefix is the string prefix used to build the
+pathname for the instantiation of <polydir>. Depending on the polyinstantiation
+method it is then appended with "instance differentiation string" to generate
+the final instance directory path. This directory is created if it did not
+exist already, and is then bind mounted on the <polydir> to provide an instance
+of <polydir> based on the <method> column. The special string $HOME is replaced
+with the user's home directory, and $USER with the username. This field cannot
+be blank.
+
+The third field, method, is the method used for polyinstantiation. It can take
+these values; "user" for polyinstantiation based on user name, "level" for
+polyinstantiation based on process MLS level and user name, "context" for
+polyinstantiation based on process security context and user name, "tmpfs" for
+mounting tmpfs filesystem as an instance dir, and "tmpdir" for creating
+temporary directory as an instance dir which is removed when the user's session
+is closed. Methods "context" and "level" are only available with SELinux. This
+field cannot be blank.
+
+The fourth field, list_of_uids, is a comma separated list of user names for
+whom the polyinstantiation is not performed. If left blank, polyinstantiation
+will be performed for all users. If the list is preceded with a single "~"
+character, polyinstantiation is performed only for users in the list.
+
+The method field can contain also following optional flags separated by :
+characters.
+
+create=mode,owner,group - create the polyinstantiated directory. The mode,
+owner and group parameters are optional. The default for mode is determined by
+umask, the default owner is the user whose session is opened, the default group
+is the primary group of the user.
+
+iscript=path - path to the instance directory init script. The base directory
+for relative paths is /etc/security/namespace.d.
+
+noinit - instance directory init script will not be executed.
+
+shared - the instance directories for "context" and "level" methods will not
+contain the user name and will be shared among all users.
+
+The directory where polyinstantiated instances are to be created, must exist
+and must have, by default, the mode of 0000. The requirement that the instance
+parent be of mode 0000 can be overridden with the command line option
+ignore_instance_parent_mode
+
+In case of context or level polyinstantiation the SELinux context which is used
+for polyinstantiation is the context used for executing a new process as
+obtained by getexeccon. This context must be set by the calling application or
+pam_selinux.so module. If this context is not set the polyinstatiation will be
+based just on user name.
+
+The "instance differentiation string" is <user name> for "user" method and
+<user name>_<raw directory context> for "context" and "level" methods. If the
+whole string is too long the end of it is replaced with md5sum of itself. Also
+when command line option gen_hash is used the whole string is replaced with
+md5sum of itself.
+
+EXAMPLES
+
+These are some example lines which might be specified in /etc/security/
+namespace.conf.
+
+
+      # The following three lines will polyinstantiate /tmp,
+      # /var/tmp and user's home directories. /tmp and /var/tmp
+      # will be polyinstantiated based on the security level
+      # as well as user name, whereas home directory will be
+      # polyinstantiated based on the full security context and user name.
+      # Polyinstantiation will not be performed for user root
+      # and adm for directories /tmp and /var/tmp, whereas home
+      # directories will be polyinstantiated for all users.
+      #
+      # Note that instance directories do not have to reside inside
+      # the polyinstantiated directory. In the examples below,
+      # instances of /tmp will be created in /tmp-inst directory,
+      # where as instances of /var/tmp and users home directories
+      # will reside within the directories that are being
+      # polyinstantiated.
+      #
+      /tmp     /tmp-inst/               level      root,adm
+      /var/tmp /var/tmp/tmp-inst/    level      root,adm
+      $HOME    $HOME/$USER.inst/inst- context
+    
+
+For the <service>s you need polyinstantiation (login for example) put the
+following line in /etc/pam.d/<service> as the last line for session group:
+
+session required pam_namespace.so [arguments]
+
+This module also depends on pam_selinux.so setting the context.
+
diff --git a/modules/pam_namespace/md5.c b/modules/pam_namespace/md5.c
index c79fb357..b23d1607 100644
--- a/modules/pam_namespace/md5.c
+++ b/modules/pam_namespace/md5.c
@@ -1,5 +1,5 @@
 /*
- * $Id$
+ * $Id: md5.c,v 1.1 2006/06/27 13:07:43 t8m Exp $
  *
  * This code implements the MD5 message-digest algorithm.
  * The algorithm is due to Ron Rivest.  This code was
diff --git a/modules/pam_namespace/namespace.conf.5 b/modules/pam_namespace/namespace.conf.5
new file mode 100644
index 00000000..0ae8c03b
--- /dev/null
+++ b/modules/pam_namespace/namespace.conf.5
@@ -0,0 +1,313 @@
+.\"     Title: namespace.conf
+.\"    Author: [see the "AUTHORS" section]
+.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/>
+.\"      Date: 10/27/2010
+.\"    Manual: Linux-PAM Manual
+.\"    Source: Linux-PAM Manual
+.\"  Language: English
+.\"
+.TH "NAMESPACE\&.CONF" "5" "10/27/2010" "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"
+namespace.conf \- the namespace configuration file
+.SH "DESCRIPTION"
+.PP
+The
+\fIpam_namespace\&.so\fR
+module allows setup of private namespaces with polyinstantiated directories\&. Directories can be polyinstantiated based on user name or, in the case of SELinux, user name, sensitivity level or complete security context\&. If an executable script
+\FC/etc/security/namespace\&.init\F[]
+exists, it is used to initialize the namespace every time an instance directory is set up and mounted\&. The script receives the polyinstantiated directory path and the instance directory path as its arguments\&.
+.PP
+The
+\FC/etc/security/namespace\&.conf\F[]
+file specifies which directories are polyinstantiated, how they are polyinstantiated, how instance directories would be named, and any users for whom polyinstantiation would not be performed\&.
+.PP
+When someone logs in, the file
+\FCnamespace\&.conf\F[]
+is scanned\&. Comments are marked by
+\fI#\fR
+characters\&. Each non comment line represents one polyinstantiated directory\&. The fields are separated by spaces but can be quoted by
+\fI"\fR
+characters also escape sequences
+\fI\eb\fR,
+\fI\en\fR, and
+\fI\et\fR
+are recognized\&. The fields are as follows:
+.PP
+\fIpolydir\fR
+\fIinstance_prefix\fR
+\fImethod\fR
+\fIlist_of_uids\fR
+.PP
+The first field,
+\fIpolydir\fR, is the absolute pathname of the directory to polyinstantiate\&. The special string
+\fI$HOME\fR
+is replaced with the user\'s home directory, and
+\fI$USER\fR
+with the username\&. This field cannot be blank\&.
+.PP
+The second field,
+\fIinstance_prefix\fR
+is the string prefix used to build the pathname for the instantiation of <polydir>\&. Depending on the polyinstantiation
+\fImethod\fR
+it is then appended with "instance differentiation string" to generate the final instance directory path\&. This directory is created if it did not exist already, and is then bind mounted on the <polydir> to provide an instance of <polydir> based on the <method> column\&. The special string
+\fI$HOME\fR
+is replaced with the user\'s home directory, and
+\fI$USER\fR
+with the username\&. This field cannot be blank\&.
+.PP
+The third field,
+\fImethod\fR, is the method used for polyinstantiation\&. It can take these values; "user" for polyinstantiation based on user name, "level" for polyinstantiation based on process MLS level and user name, "context" for polyinstantiation based on process security context and user name, "tmpfs" for mounting tmpfs filesystem as an instance dir, and "tmpdir" for creating temporary directory as an instance dir which is removed when the user\'s session is closed\&. Methods "context" and "level" are only available with SELinux\&. This field cannot be blank\&.
+.PP
+The fourth field,
+\fIlist_of_uids\fR, is a comma separated list of user names for whom the polyinstantiation is not performed\&. If left blank, polyinstantiation will be performed for all users\&. If the list is preceded with a single "~" character, polyinstantiation is performed only for users in the list\&.
+.PP
+The
+\fImethod\fR
+field can contain also following optional flags separated by
+\fI:\fR
+characters\&.
+.PP
+\fIcreate\fR=\fImode\fR,\fIowner\fR,\fIgroup\fR
+\- create the polyinstantiated directory\&. The mode, owner and group parameters are optional\&. The default for mode is determined by umask, the default owner is the user whose session is opened, the default group is the primary group of the user\&.
+.PP
+\fIiscript\fR=\fIpath\fR
+\- path to the instance directory init script\&. The base directory for relative paths is
+\FC/etc/security/namespace\&.d\F[]\&.
+.PP
+\fInoinit\fR
+\- instance directory init script will not be executed\&.
+.PP
+\fIshared\fR
+\- the instance directories for "context" and "level" methods will not contain the user name and will be shared among all users\&.
+.PP
+The directory where polyinstantiated instances are to be created, must exist and must have, by default, the mode of 0000\&. The requirement that the instance parent be of mode 0000 can be overridden with the command line option
+\fIignore_instance_parent_mode\fR
+.PP
+In case of context or level polyinstantiation the SELinux context which is used for polyinstantiation is the context used for executing a new process as obtained by getexeccon\&. This context must be set by the calling application or
+\FCpam_selinux\&.so\F[]
+module\&. If this context is not set the polyinstatiation will be based just on user name\&.
+.PP
+The "instance differentiation string" is <user name> for "user" method and <user name>_<raw directory context> for "context" and "level" methods\&. If the whole string is too long the end of it is replaced with md5sum of itself\&. Also when command line option
+\fIgen_hash\fR
+is used the whole string is replaced with md5sum of itself\&.
+.SH "EXAMPLES"
+.PP
+These are some example lines which might be specified in
+\FC/etc/security/namespace\&.conf\F[]\&.
+.sp
+.if n \{\
+.RS 4
+.\}
+.fam C
+.ps -1
+.nf
+.if t \{\
+.sp -1
+.\}
+.BB lightgray adjust-for-leading-newline
+.sp -1
+
+      # The following three lines will polyinstantiate /tmp,
+      # /var/tmp and user\'s home directories\&. /tmp and /var/tmp
+      # will be polyinstantiated based on the security level
+      # as well as user name, whereas home directory will be
+      # polyinstantiated based on the full security context and user name\&.
+      # Polyinstantiation will not be performed for user root
+      # and adm for directories /tmp and /var/tmp, whereas home
+      # directories will be polyinstantiated for all users\&.
+      #
+      # Note that instance directories do not have to reside inside
+      # the polyinstantiated directory\&. In the examples below,
+      # instances of /tmp will be created in /tmp\-inst directory,
+      # where as instances of /var/tmp and users home directories
+      # will reside within the directories that are being
+      # polyinstantiated\&.
+      #
+      /tmp     /tmp\-inst/               level      root,adm
+      /var/tmp /var/tmp/tmp\-inst/   	level      root,adm
+      $HOME    $HOME/$USER\&.inst/inst\- context
+    
+.EB lightgray adjust-for-leading-newline
+.if t \{\
+.sp 1
+.\}
+.fi
+.fam
+.ps +1
+.if n \{\
+.RE
+.\}
+.PP
+For the <service>s you need polyinstantiation (login for example) put the following line in /etc/pam\&.d/<service> as the last line for session group:
+.PP
+session required pam_namespace\&.so [arguments]
+.PP
+This module also depends on pam_selinux\&.so setting the context\&.
+.SH "SEE ALSO"
+.PP
+
+\fBpam_namespace\fR(8),
+\fBpam.d\fR(5),
+\fBpam\fR(8)
+.SH "AUTHORS"
+.PP
+The namespace\&.conf manual page was written by Janak Desai <janak@us\&.ibm\&.com>\&. More features added by Tomas Mraz <tmraz@redhat\&.com>\&.
diff --git a/modules/pam_namespace/pam_namespace.8 b/modules/pam_namespace/pam_namespace.8
new file mode 100644
index 00000000..f110115f
--- /dev/null
+++ b/modules/pam_namespace/pam_namespace.8
@@ -0,0 +1,333 @@
+.\"     Title: pam_namespace
+.\"    Author: [see the "AUTHORS" section]
+.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/>
+.\"      Date: 10/27/2010
+.\"    Manual: Linux-PAM Manual
+.\"    Source: Linux-PAM Manual
+.\"  Language: English
+.\"
+.TH "PAM_NAMESPACE" "8" "10/27/2010" "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_namespace \- PAM module for configuring namespace for a session
+.SH "Synopsis"
+.fam C
+.HP \w'\fBpam_namespace\&.so\fR\ 'u
+\fBpam_namespace\&.so\fR [debug] [unmnt_remnt] [unmnt_only] [require_selinux] [gen_hash] [ignore_config_error] [ignore_instance_parent_mode] [no_unmount_on_close] [use_current_context] [use_default_context]
+.fam
+.SH "DESCRIPTION"
+.PP
+The pam_namespace PAM module sets up a private namespace for a session with polyinstantiated directories\&. A polyinstantiated directory provides a different instance of itself based on user name, or when using SELinux, user name, security context or both\&. If an executable script
+\FC/etc/security/namespace\&.init\F[]
+exists, it is used to initialize the instance directory after it is set up and mounted on the polyinstantiated directory\&. The script receives the polyinstantiated directory path, the instance directory path, flag whether the instance directory was newly created (0 for no, 1 for yes), and the user name as its arguments\&.
+.PP
+The pam_namespace module disassociates the session namespace from the parent namespace\&. Any mounts/unmounts performed in the parent namespace, such as mounting of devices, are not reflected in the session namespace\&. To propagate selected mount/unmount events from the parent namespace into the disassociated session namespace, an administrator may use the special shared\-subtree feature\&. For additional information on shared\-subtree feature, please refer to the mount(8) man page and the shared\-subtree description at http://lwn\&.net/Articles/159077 and http://lwn\&.net/Articles/159092\&.
+.SH "OPTIONS"
+.PP
+\fBdebug\fR
+.RS 4
+A lot of debug information is logged using syslog
+.RE
+.PP
+\fBunmnt_remnt\fR
+.RS 4
+For programs such as su and newrole, the login session has already setup a polyinstantiated namespace\&. For these programs, polyinstantiation is performed based on new user id or security context, however the command first needs to undo the polyinstantiation performed by login\&. This argument instructs the command to first undo previous polyinstantiation before proceeding with new polyinstantiation based on new id/context
+.RE
+.PP
+\fBunmnt_only\fR
+.RS 4
+For trusted programs that want to undo any existing bind mounts and process instance directories on their own, this argument allows them to unmount currently mounted instance directories
+.RE
+.PP
+\fBrequire_selinux\fR
+.RS 4
+If selinux is not enabled, return failure
+.RE
+.PP
+\fBgen_hash\fR
+.RS 4
+Instead of using the security context string for the instance name, generate and use its md5 hash\&.
+.RE
+.PP
+\fBignore_config_error\fR
+.RS 4
+If a line in the configuration file corresponding to a polyinstantiated directory contains format error, skip that line process the next line\&. Without this option, pam will return an error to the calling program resulting in termination of the session\&.
+.RE
+.PP
+\fBignore_instance_parent_mode\fR
+.RS 4
+Instance parent directories by default are expected to have the restrictive mode of 000\&. Using this option, an administrator can choose to ignore the mode of the instance parent\&. This option should be used with caution as it will reduce security and isolation goals of the polyinstantiation mechanism\&.
+.RE
+.PP
+\fBno_unmount_on_close\fR
+.RS 4
+For certain trusted programs such as newrole, open session is called from a child process while the parent performs close session and pam end functions\&. For these commands use this option to instruct pam_close_session to not unmount the bind mounted polyinstantiated directory in the parent\&.
+.RE
+.PP
+\fBuse_current_context\fR
+.RS 4
+Useful for services which do not change the SELinux context with setexeccon call\&. The module will use the current SELinux context of the calling process for the level and context polyinstantiation\&.
+.RE
+.PP
+\fBuse_default_context\fR
+.RS 4
+Useful for services which do not use pam_selinux for changing the SELinux context with setexeccon call\&. The module will use the default SELinux context of the user for the level and context polyinstantiation\&.
+.RE
+.SH "MODULE TYPES PROVIDED"
+.PP
+Only the
+\fBsession\fR
+module type is provided\&. The module must not be called from multithreaded processes\&.
+.SH "RETURN VALUES"
+.PP
+PAM_SUCCESS
+.RS 4
+Namespace setup was successful\&.
+.RE
+.PP
+PAM_SERVICE_ERR
+.RS 4
+Unexpected system error occurred while setting up namespace\&.
+.RE
+.PP
+PAM_SESSION_ERR
+.RS 4
+Unexpected namespace configuration error occurred\&.
+.RE
+.SH "FILES"
+.PP
+\FC/etc/security/namespace\&.conf\F[]
+.RS 4
+Main configuration file
+.RE
+.PP
+\FC/etc/security/namespace\&.d\F[]
+.RS 4
+Directory for additional configuration files
+.RE
+.PP
+\FC/etc/security/namespace\&.init\F[]
+.RS 4
+Init script for instance directories
+.RE
+.SH "EXAMPLES"
+.PP
+For the <service>s you need polyinstantiation (login for example) put the following line in /etc/pam\&.d/<service> as the last line for session group:
+.PP
+session required pam_namespace\&.so [arguments]
+.PP
+To use polyinstantiation with graphical display manager gdm, insert the following line, before exit 0, in /etc/gdm/PostSession/Default:
+.PP
+/usr/sbin/gdm\-safe\-restart
+.PP
+This allows gdm to restart after each session and appropriately adjust namespaces of display manager and the X server\&. If polyinstantiation of /tmp is desired along with the graphical environment, then additional configuration changes are needed to address the interaction of X server and font server namespaces with their use of /tmp to create communication sockets\&. Please use the initialization script
+\FC/etc/security/namespace\&.init\F[]
+to ensure that the X server and its clients can appropriately access the communication socket X0\&. Please refer to the sample instructions provided in the comment section of the instance initialization script
+\FC/etc/security/namespace\&.init\F[]\&. In addition, perform the following changes to use graphical environment with polyinstantiation of /tmp:
+.PP
+
+.sp
+.if n \{\
+.RS 4
+.\}
+.fam C
+.ps -1
+.nf
+.if t \{\
+.sp -1
+.\}
+.BB lightgray adjust-for-leading-newline
+.sp -1
+
+      1\&. Disable the use of font server by commenting out "FontPath"
+         line in /etc/X11/xorg\&.conf\&. If you do want to use the font server
+         then you will have to augment the instance initialization
+         script to appropriately provide /tmp/\&.font\-unix from the
+         polyinstantiated /tmp\&.
+      2\&. Ensure that the gdm service is setup to use pam_namespace,
+         as described above, by modifying /etc/pam\&.d/gdm\&.
+      3\&. Ensure that the display manager is configured to restart X server
+         with each new session\&. This default setup can be verified by
+         making sure that /usr/share/gdm/defaults\&.conf contains
+         "AlwaysRestartServer=true", and it is not overridden by
+         /etc/gdm/custom\&.conf\&.
+    
+.EB lightgray adjust-for-leading-newline
+.if t \{\
+.sp 1
+.\}
+.fi
+.fam
+.ps +1
+.if n \{\
+.RE
+.\}
+.sp
+.SH "SEE ALSO"
+.PP
+
+\fBnamespace.conf\fR(5),
+\fBpam.d\fR(5),
+\fBmount\fR(8),
+\fBpam\fR(8)\&.
+.SH "AUTHORS"
+.PP
+The namespace setup scheme was designed by Stephen Smalley, Janak Desai and Chad Sellers\&. The pam_namespace PAM module was developed by Janak Desai <janak@us\&.ibm\&.com>, Chad Sellers <csellers@tresys\&.com> and Steve Grubb <sgrubb@redhat\&.com>\&. Additional improvements by Xavier Toth <txtoth@gmail\&.com> and Tomas Mraz <tmraz@redhat\&.com>\&.