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[bug#61462,05/10] system: Add (gnu system privilege).

Message ID 20230205000019.6259-5-me@tobias.gr
State New
Headers show
Series [bug#61462,01/10] system: Disallow file-like setuid-programs. | expand

Commit Message

Tobias Geerinckx-Rice Feb. 5, 2023, midnight UTC 
* gnu/system/privilege.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
---
 gnu/local.mk             |  1 +
 gnu/system/privilege.scm | 58 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)
 create mode 100644 gnu/system/privilege.scm
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Patch

diff --git a/gnu/local.mk b/gnu/local.mk
index cdb99813d0..acf74cd9ae 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -723,6 +723,7 @@  GNU_SYSTEM_MODULES =				\
   %D%/system/mapped-devices.scm			\
   %D%/system/nss.scm				\
   %D%/system/pam.scm				\
+  %D%/system/privilege.scm			\
   %D%/system/setuid.scm				\
   %D%/system/shadow.scm				\
   %D%/system/uuid.scm				\
diff --git a/gnu/system/privilege.scm b/gnu/system/privilege.scm
new file mode 100644
index 0000000000..d89d5d5d1c
--- /dev/null
+++ b/gnu/system/privilege.scm
@@ -0,0 +1,58 @@ 
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2021 Brice Waegeneire <brice@waegenei.re>
+;;; Copyright © 2022 Tobias Geerinckx-Rice <me@tobias.gr>
+;;;
+;;; 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 system privilege)
+  #:use-module (guix records)
+  #:export (privileged-program
+            privileged-program?
+            privileged-program-program
+            privileged-program-setuid?
+            privileged-program-setgid?
+            privileged-program-user
+            privileged-program-group
+            privileged-program-capabilities))
+
+;;; Commentary:
+;;;
+;;; Data structures representing privileged programs: binaries with additional
+;;; permissions such as setuid/setgid, or POSIX capabilities.  This is meant to
+;;; be used both on the host side and at run time--e.g., in activation snippets.
+;;;
+;;; Code:
+
+(define-record-type* <privileged-program>
+  privileged-program make-privileged-program
+  privileged-program?
+  ;; File name of the program to assign elevated privileges.
+  (program       privileged-program-program) ;file-like
+  ;; Whether to set the setuid (‘set user ID’) bit.
+  (setuid?       privileged-program-setuid? ;boolean
+                 (default #f))
+  ;; Whether to set the setgid (‘set group ID’) bit.
+  (setgid?       privileged-program-setgid? ;boolean
+                 (default #f))
+  ;; The user name or ID this should be set to (defaults to root's).
+  (user          privileged-program-user ;integer or string
+                 (default 0))
+  ;; The group name or ID we want to set this to (defaults to root's).
+  (group         privileged-program-group ;integer or string
+                 (default 0))
+  ;; POSIX capabilities in cap_from_text(3) form (defaults to #f: none).
+  (capabilities  privileged-program-capabilities ;string or #f
+                 (default #f)))