file-systems: %base-file-systems: Add tmpfs /run.

* gnu/system/file-systems (%runtime-variable-data): New variable.
(%base-file-systems): Add it.
* doc/guix.texi (File Systems): Document it.
* gnu/services.scm (cleanup-gexp): Adjust accordingly.

Change-Id: I3a95e49d396fbb2577026aefc247cfe996c5f267
Modified-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/gnu/services.scm b/gnu/services.scm
index 8a4002e0724..ea855ad1937 100644
--- a/gnu/services.scm
+++ b/gnu/services.scm
@@ -632,7 +632,7 @@ information is missing, return the empty list (for channels) and possibly
     #~(begin
         (use-modules (guix build utils))
 
-        ;; Clean out /tmp, /var/run, and /run.
+        ;; Clean out /tmp and /var/run.
         ;;
         ;; XXX This needs to happen before service activations, so it
         ;; has to be here, but this also implicitly assumes that /tmp
@@ -663,15 +663,12 @@ information is missing, return the empty list (for channels) and possibly
            (setlocale LC_CTYPE "en_US.utf8")
            (delete-file-recursively "/tmp")
            (delete-file-recursively "/var/run")
-           (delete-file-recursively "/run")
 
            ;; Note: The second argument to 'mkdir' is and'ed with umask,
            ;; hence the 'chmod' calls.
            (mkdir "/tmp" #o1777)
            (chmod "/tmp" #o1777)
            (mkdir "/var/run" #o755)
-           (chmod "/var/run" #o755)
-           (mkdir "/run" #o755)
            (chmod "/var/run" #o755))))))
 
 (define cleanup-service-type