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Re: [PATCH 3/4] gnu: shadow: User shells point to current profile
From: |
Ludovic Courtès |
Subject: |
Re: [PATCH 3/4] gnu: shadow: User shells point to current profile |
Date: |
Fri, 17 Apr 2015 10:50:01 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) |
Andy Wingo <address@hidden> skribis:
> - (shell #~(string-append #$shadow "/sbin/nologin"))))
> + (shell "/run/current-system/profile/sbin/nologin")))
[...]
> - (shell #~(string-append #$shadow
> - "/sbin/nologin")))))))))
> + (shell
> "/run/current-system/profile/sbin/nologin"))))))))
[...]
> + (shell user-account-shell ; string
> + (default "/run/current-system/profile/bin/bash"))
The problem I see with this approach is that it will only work if the
shell is actually install in the global profile, and it’s really a
workaround: users could still use a gexp as for the ‘shell’ field.
I think we should instead generate /etc/shells based on the ‘shell’
field of each user account, so that it matches exactly what’s being
used:
diff --git a/gnu/system.scm b/gnu/system.scm
index 6cf12df..0df8323 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -405,30 +405,47 @@ settings for 'guix.el' to work out-of-the-box."
(chdir #$output)
(symlink #$file "site-start.el")))))
+(define (user-shells os)
+ "Return the list of shells used by the accounts of OS. These may be gexps
+or strings."
+ (mlet %store-monad ((accounts (operating-system-accounts os)))
+ (return (map user-account-shell accounts))))
+
+(define (shells-file shells)
+ "Return a derivation that builds a shell list for use as /etc/shells based
+on SHELLS. /etc/shells is used by xterm, polkit, and other programs."
+ (gexp->derivation "shells"
+ #~(begin
+ (use-modules (srfi srfi-1))
+
+ (define shells
+ (delete-duplicates (list address@hidden)))
+
+ (call-with-output-file #$output
+ (lambda (port)
+ (display "\
+/bin/sh
+/run/current-system/profile/bin/sh
+/run/current-system/profile/bin/bash\n" port)
+ (for-each (lambda (shell)
+ (display shell port)
+ (newline port))
+ shells))))))
+
(define* (etc-directory #:key
(locale "C") (timezone "Europe/Paris")
(issue "Hello!\n")
(skeletons '())
(pam-services '())
(profile "/run/current-system/profile")
- hosts-file nss
+ hosts-file nss (shells '())
(sudoers ""))
"Return a derivation that builds the static part of the /etc directory."
(mlet* %store-monad
((pam.d (pam-services->directory pam-services))
(sudoers (text-file "sudoers" sudoers))
(login.defs (text-file "login.defs" "# Empty for now.\n"))
-
- ;; /etc/shells is used by xterm and other programs. We don't check
- ;; whether these shells are installed, should be OK.
- (shells (text-file "shells"
- "\
-/bin/sh
-/run/current-system/profile/bin/sh
-/run/current-system/profile/bin/bash
-/run/current-system/profile/bin/fish
-/run/current-system/profile/bin/tcsh
-/run/current-system/profile/bin/zsh\n"))
+ (shells (shells-file shells))
(emacs (emacs-site-directory))
(issue (text-file "issue" issue))
(nsswitch (text-file "nsswitch.conf"
@@ -543,7 +560,8 @@ fi\n"))
(profile-drv (operating-system-profile os))
(skeletons (operating-system-skeletons os))
(/etc/hosts (or (operating-system-hosts-file os)
- (default-/etc/hosts (operating-system-host-name os)))))
+ (default-/etc/hosts (operating-system-host-name os))))
+ (shells (user-shells os)))
(etc-directory #:pam-services pam-services
#:skeletons skeletons
#:issue (operating-system-issue os)
@@ -551,6 +569,7 @@ fi\n"))
#:nss (operating-system-name-service-switch os)
#:timezone (operating-system-timezone os)
#:hosts-file /etc/hosts
+ #:shells shells
#:sudoers (operating-system-sudoers os)
#:profile profile-drv)))
Thoughts? 宋文武, WDYT?
Thanks,
Ludo’.