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authorLudovic Courtès <ludo@gnu.org>2013-12-08 21:22:22 +0100
committerLudovic Courtès <ludo@gnu.org>2013-12-08 22:43:56 +0100
commit9b0ac8025860ac426cb1bc7fd417a27fe2bed36a (patch)
treef2a703efdddbdf89b5cd79e83739bf7f743e3b26 /gnu/system
parent677078b48f649588f588c6adef0bb0aba70f7c8c (diff)
downloadguix-9b0ac8025860ac426cb1bc7fd417a27fe2bed36a.tar
guix-9b0ac8025860ac426cb1bc7fd417a27fe2bed36a.tar.gz
gnu: Populate /etc upon startup.
* gnu/packages/patches/dmd-getpw.patch: New file. * gnu-system.am (dist_patch_DATA): Add it. * gnu/packages/system.scm (dmd): Use it. * gnu/system/vm.scm (system-qemu-image): Don't explicitly populate /etc; don't add ETC to the GC roots. * gnu/system/dmd.scm (dmd-configuration-file): Add 'etc' parameter. [config]: Populate /etc from there.
Diffstat (limited to 'gnu/system')
-rw-r--r--gnu/system/dmd.scm30
-rw-r--r--gnu/system/vm.scm14
2 files changed, 29 insertions, 15 deletions
diff --git a/gnu/system/dmd.scm b/gnu/system/dmd.scm
index df38172def..aec7d03759 100644
--- a/gnu/system/dmd.scm
+++ b/gnu/system/dmd.scm
@@ -266,10 +266,13 @@ true, it must be a string specifying the default network gateway."
'())))))))
-(define (dmd-configuration-file services)
- "Return the dmd configuration file for SERVICES."
+(define (dmd-configuration-file services etc)
+ "Return the dmd configuration file for SERVICES, that initializes /etc from
+ETC on startup."
(define config
`(begin
+ (use-modules (ice-9 ftw))
+
(register-services
,@(map (match-lambda
(($ <service> documentation provision requirement
@@ -282,6 +285,29 @@ true, it must be a string specifying the default network gateway."
#:start ,start
#:stop ,stop)))
services))
+
+ ;; /etc is a mixture of static and dynamic settings. Here is where we
+ ;; initialize it from the static part.
+ (format #t "populating /etc from ~a...~%" ,etc)
+ (let ((rm-f (lambda (f)
+ (false-if-exception (delete-file f)))))
+ (rm-f "/etc/static")
+ (symlink ,etc "/etc/static")
+ (for-each (lambda (file)
+ ;; TODO: Handle 'shadow' specially so that changed
+ ;; password aren't lost.
+ (let ((target (string-append "/etc/" file))
+ (source (string-append "/etc/static/" file)))
+ (rm-f target)
+ (symlink source target)))
+ (scandir ,etc
+ (lambda (file)
+ (not (member file '("." ".."))))))
+
+ ;; Prevent ETC from being GC'd.
+ (symlink ,etc "/var/nix/gcroots/etc-directory"))
+
+ (format #t "starting services...~%")
(for-each start ',(append-map service-provision services))))
(text-file "dmd.conf" (object->string config)))
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm
index ffbc07ee85..7afbd70044 100644
--- a/gnu/system/vm.scm
+++ b/gnu/system/vm.scm
@@ -577,7 +577,6 @@ Happy birthday, GNU! http://www.gnu.org/gnu30
(bash-file (package-file bash "bin/bash"))
(dmd-file (package-file dmd "bin/dmd"))
- (dmd-conf (dmd-configuration-file services))
(accounts -> (cons* (user-account
(name "root")
(password "")
@@ -632,26 +631,15 @@ Happy birthday, GNU! http://www.gnu.org/gnu30
#:pam-services pam-services
#:profile profile))
(etc -> (derivation->output-path etc-drv))
+ (dmd-conf (dmd-configuration-file services etc))
(populate -> `((directory "/nix/store" 0 ,build-user-gid)
(directory "/etc")
(directory "/var/log") ; for dmd
(directory "/var/run/nscd")
- ("/etc/static" -> ,etc)
- ("/etc/shadow" -> "/etc/static/shadow")
- ("/etc/passwd" -> "/etc/static/passwd")
- ("/etc/group" -> "/etc/static/group")
- ("/etc/login.defs" -> "/etc/static/login.defs")
- ("/etc/pam.d" -> "/etc/static/pam.d")
- ("/etc/profile" -> "/etc/static/profile")
- ("/etc/issue" -> "/etc/static/issue")
- ("/etc/services" -> "/etc/static/services")
- ("/etc/protocols" -> "/etc/static/protocols")
- ("/etc/rpc" -> "/etc/static/rpc")
(directory "/var/nix/gcroots")
("/var/nix/gcroots/default-profile" -> ,profile)
- ("/var/nix/gcroots/etc-directory" -> ,etc)
(directory "/tmp")
(directory "/var/nix/profiles/per-user/root" 0 0)
(directory "/var/nix/profiles/per-user/guest"