services: 'dmd-service-type' takes a service name.

* gnu/services/dmd.scm (dmd-service-type): Add 'service-name'
  parameter.
* gnu/services/base.scm, gnu/services/networking.scm,
  gnu/system/install.scm: Adjust callers.

gnu/services/base.scm

@@ -125,7 +125,8 @@
    (respawn? #f)))
 
 (define root-file-system-service-type
-  (dmd-service-type (const %root-file-system-dmd-service)))
+  (dmd-service-type 'root-file-system
+                    (const %root-file-system-dmd-service)))
 
 (define (root-file-system-service)
   "Return a service whose sole purpose is to re-mount read-only the root file
@@ -145,6 +146,7 @@ FILE-SYSTEM."
   ;; TODO(?): Make this an extensible service that takes <file-system> objects
   ;; and returns a list of <dmd-service>.
   (dmd-service-type
+   'file-system
    (lambda (file-system)
      (let ((target  (file-system-mount-point file-system))
            (device  (file-system-device file-system))
@@ -205,6 +207,7 @@ object."
 
 (define user-unmount-service-type
   (dmd-service-type
+   'user-unmount
    (lambda (known-mount-points)
      (dmd-service
       (documentation "Unmount manually-mounted file systems.")
@@ -242,6 +245,7 @@ in KNOWN-MOUNT-POINTS when it is stopped."
 
 (define user-processes-service-type
   (dmd-service-type
+   'user-processes
    (match-lambda
      ((requirements grace-delay)
       (dmd-service
@@ -337,6 +341,7 @@ stopped before 'kill' is called."
 
 (define host-name-service-type
   (dmd-service-type
+   'host-name
    (lambda (name)
      (dmd-service
       (documentation "Initialize the machine's host name.")
@@ -369,6 +374,7 @@ stopped before 'kill' is called."
 
 (define console-keymap-service-type
   (dmd-service-type
+   'console-keymap
    (lambda (file)
      (dmd-service
       (documentation (string-append "Load console keymap (loadkeys)."))
@@ -384,6 +390,7 @@ stopped before 'kill' is called."
 
 (define console-font-service-type
   (dmd-service-type
+   'console-font
    (match-lambda
      ((tty font)
       (let ((device (string-append "/dev/" tty)))
@@ -644,6 +651,7 @@ Service Switch}, for an example."
 
 (define syslog-service-type
   (dmd-service-type
+   'syslog
    (lambda (config-file)
      (dmd-service
       (documentation "Run the syslog daemon (syslogd).")
@@ -982,6 +990,7 @@ extra rules from the packages listed in @var{rules}."
 
 (define device-mapping-service-type
   (dmd-service-type
+   'device-mapping
    (match-lambda
      ((target open close)
       (dmd-service
@@ -1001,6 +1010,7 @@ gexp, to open it, and evaluate @var{close} to close it."
 
 (define swap-service-type
   (dmd-service-type
+   'swap
    (lambda (device)
      (define requirement
        (if (string-prefix? "/dev/mapper/" device)

gnu/services/dmd.scm

@@ -86,11 +86,11 @@
   ;; <dmd-service> objects.
   (service dmd-root-service-type '()))
 
-(define-syntax-rule (dmd-service-type proc)
+(define-syntax-rule (dmd-service-type service-name proc)
   "Return a <service-type> denoting a simple dmd service--i.e., the type for a
 service that extends DMD-ROOT-SERVICE-TYPE and nothing else."
   (service-type
-   (name 'some-dmd-service)
+   (name service-name)
    (extensions
     (list (service-extension dmd-root-service-type
                              (compose list proc))))))

gnu/services/networking.scm

@@ -94,6 +94,7 @@ fe80::1%lo0 apps.facebook.com\n")
 
 (define static-networking-service-type
   (dmd-service-type
+   'static-networking
    (match-lambda
      (($ <static-networking> interface ip gateway provision
                              name-servers net-tools)
@@ -166,6 +167,7 @@ gateway."
 
 (define dhcp-client-service-type
   (dmd-service-type
+   'dhcp-client
    (lambda (dhcp)
      (define dhclient
        #~(string-append #$dhcp "/sbin/dhclient"))

gnu/system/install.scm

@@ -162,6 +162,7 @@ current store is on a RAM disk."
 
 (define cow-store-service-type
   (dmd-service-type
+   'cow-store
    (lambda _
      (dmd-service
       (requirement '(root-file-system user-processes))