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[bug#38182] [PATCH 3/3] services: Add pam-mount.


From: Guillaume Le Vaillant
Subject: [bug#38182] [PATCH 3/3] services: Add pam-mount.
Date: Tue, 12 Nov 2019 19:05:19 +0100

* gnu/services/pam-mount.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* doc/guix.texi (PAM Mount Service): New subsection.
---
 doc/guix.texi              | 31 ++++++++++++++++
 gnu/local.mk               |  1 +
 gnu/services/pam-mount.scm | 76 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 108 insertions(+)
 create mode 100644 gnu/services/pam-mount.scm

diff --git a/doc/guix.texi b/doc/guix.texi
index 242beb18c8..3a339b42a0 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -68,6 +68,7 @@ Copyright @copyright{} 2019 Ivan Petkov@*
 Copyright @copyright{} 2019 Jakob L. Kreuze@*
 Copyright @copyright{} 2019 Kyle Andrews@*
 Copyright @copyright{} 2019 Alex Griffin@*
+Copyright @copyright{} 2019 Guillaume Le Vaillant@*
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
@@ -304,6 +305,7 @@ Services
 * Virtualization Services::     Virtualization services.
 * Version Control Services::    Providing remote access to Git repositories.
 * Game Services::               Game servers.
+* PAM Mount Service::           Service to mount volumes when logging in.
 * Miscellaneous Services::      Other services.
 
 Defining Services
@@ -11867,6 +11869,7 @@ declaration.
 * Virtualization Services::     Virtualization services.
 * Version Control Services::    Providing remote access to Git repositories.
 * Game Services::               Game servers.
+* PAM Mount Service::           Service to mount volumes when logging in.
 * Guix Services::               Services relating specifically to Guix.
 * Miscellaneous Services::      Other services.
 @end menu
@@ -24592,6 +24595,34 @@ The port to bind the server to.
 @end deftp
 
 
+@node PAM Mount Service
+@subsection PAM Mount Service
+@cindex pam-mount
+
+The @code{(gnu services pam-mount)} module provides a service allowing
+users to mount volumes when they log in.  It should be able to mount any
+volume format supported by the system.  Note that to automatically mount
+encrypted volumes using the password the user entered to log in, the
+@code{pam-mount} package must be added in the @code{packages} field of
+the @code{operating-system} definition.
+
+@defvar {Scheme Variable} pam-mount-service-type
+Service type for PAM Mount support.
+@end defvar
+
+@deftp {Data Type} pam-mount-configuration
+Data type representing the configuration of PAM Mount.
+
+It takes the following parameters:
+
+@table @asis
+@item @code{file}
+The configuration file that will be placed in
+@file{/etc/security/pam_mount.conf.xml}.
+@end table
+@end deftp
+
+
 @node Guix Services
 @subsection Guix Services
 
diff --git a/gnu/local.mk b/gnu/local.mk
index 5fa7b5a883..43ef679935 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -551,6 +551,7 @@ GNU_SYSTEM_MODULES =                                \
   %D%/services/networking.scm                  \
   %D%/services/nix.scm                         \
   %D%/services/nfs.scm                 \
+  %D%/services/pam-mount.scm                   \
   %D%/services/security-token.scm              \
   %D%/services/shepherd.scm                    \
   %D%/services/sound.scm                       \
diff --git a/gnu/services/pam-mount.scm b/gnu/services/pam-mount.scm
new file mode 100644
index 0000000000..65db9b0068
--- /dev/null
+++ b/gnu/services/pam-mount.scm
@@ -0,0 +1,76 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2019 Guillaume Le Vaillant <address@hidden>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu services pam-mount)
+  #:use-module (gnu packages admin)
+  #:use-module (gnu services)
+  #:use-module (gnu services configuration)
+  #:use-module (gnu system pam)
+  #:use-module (guix gexp)
+  #:use-module (guix records)
+  #:export (pam-mount-configuration
+            pam-mount-configuration?
+            pam-mount-service-type))
+
+(define %pam-mount-default-configuration
+  (plain-file "pam_mount.conf.xml"
+              "<?xml version=\"1.0\" encoding=\"utf-8\" ?>
+<!DOCTYPE pam_mount SYSTEM \"pam_mount.conf.xml.dtd\">
+<pam_mount>
+<debug enable=\"0\" />
+<mntoptions
+allow=\"nosuid,nodev,loop,encryption,fsck,nonempty,allow_root,allow_other\" />
+<mntoptions require=\"nosuid,nodev\" />
+<logout wait=\"0\" hup=\"no\" term=\"no\" kill=\"no\" />
+<mkmountpoint enable=\"1\" remove=\"true\" />
+</pam_mount>\n"))
+
+(define-record-type* <pam-mount-configuration>
+  pam-mount-configuration
+  make-pam-mount-configuration
+  pam-mount-configuration?
+  (file pam-mount-configuration-file
+        (default %pam-mount-default-configuration)))
+
+(define (pam-mount-etc-service config)
+  `(("security/pam_mount.conf.xml" ,(pam-mount-configuration-file config))))
+
+(define (pam-mount-pam-service config)
+  (define optional-pam-mount
+    (pam-entry
+     (control "optional")
+     (module #~(string-append #$pam-mount "/lib/security/pam_mount.so"))))
+  (list (lambda (pam)
+          (if (member (pam-service-name pam)
+                      '("login" "su" "slim" "gdm-password"))
+              (pam-service
+               (inherit pam)
+               (auth (append (pam-service-auth pam)
+                             (list optional-pam-mount)))
+               (session (append (pam-service-session pam)
+                                (list optional-pam-mount))))
+              pam))))
+
+(define pam-mount-service-type
+  (service-type
+   (name 'pam-mount)
+   (extensions (list (service-extension etc-service-type
+                                        pam-mount-etc-service)
+                     (service-extension pam-root-service-type
+                                        pam-mount-pam-service)))
+   (default-value (pam-mount-configuration))))
-- 
2.24.0






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