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authorLudovic Courtès <ludo@gnu.org>2018-06-20 10:44:24 +0200
committerLudovic Courtès <ludo@gnu.org>2018-06-20 23:47:07 +0200
commit636bb2b5e350bb5eb1d934da690c85e52e352bc4 (patch)
tree96b472c616a02288fb733e8f9921c911db32aa40
parent6a8d3381588ad335d14ad8e7d68bcd8530a68252 (diff)
downloadguix-636bb2b5e350bb5eb1d934da690c85e52e352bc4.tar
guix-636bb2b5e350bb5eb1d934da690c85e52e352bc4.tar.gz
services: Add description to core services.
* gnu/services.scm (system-service-type, boot-service-type) (cleanup-service-type, activation-service-type) (special-files-service-type, etc-service-type) (setuid-program-service-type, profile-service-type) (firmware-service-type, gc-root-service-type): Add 'description' field.
-rw-r--r--gnu/services.scm51
1 files changed, 41 insertions, 10 deletions
diff --git a/gnu/services.scm b/gnu/services.scm
index 55ad5c9368..51edb4868d 100644
--- a/gnu/services.scm
+++ b/gnu/services.scm
@@ -331,7 +331,11 @@ containing the given entries."
(service-type (name 'system)
(extensions '())
(compose identity)
- (extend system-derivation)))
+ (extend system-derivation)
+ (description
+ "Build the operating system top-level directory, which in
+turn refers to everything the operating system needs: its kernel, initrd,
+system profile, boot script, and so on.")))
(define (compute-boot-script _ mexps)
;; Reverse MEXPS so that extensions appear in the boot script in the right
@@ -358,7 +362,10 @@ directory."
(list (service-extension system-service-type
boot-script-entry)))
(compose identity)
- (extend compute-boot-script)))
+ (extend compute-boot-script)
+ (description
+ "Produce the operating system's boot script, which is spawned
+by the initrd once the root file system is mounted.")))
(define %boot-service
;; The service that produces the boot script.
@@ -413,7 +420,10 @@ boot."
(service-type (name 'cleanup)
(extensions
(list (service-extension boot-service-type
- cleanup-gexp)))))
+ cleanup-gexp)))
+ (description
+ "Delete files from @file{/tmp}, @file{/var/run}, and other
+temporary locations at boot time.")))
(define* (activation-service->script service)
"Return as a monadic value the activation script for SERVICE, a service of
@@ -469,7 +479,10 @@ ACTIVATION-SCRIPT-TYPE."
(list (service-extension boot-service-type
gexps->activation-gexp)))
(compose identity)
- (extend second-argument)))
+ (extend second-argument)
+ (description
+ "Run @dfn{activation} code at boot time and upon
+@command{guix system reconfigure} completion.")))
(define %activation-service
;; The activation service produces the activation script from the gexps it
@@ -517,7 +530,10 @@ ACTIVATION-SCRIPT-TYPE."
(lambda (files)
#~(activate-special-files '#$files)))))
(compose concatenate)
- (extend append)))
+ (extend append)
+ (description
+ "Add special files to the root file system---e.g.,
+@file{/usr/bin/env}.")))
(define (extra-special-file file target)
"Use TARGET as the \"special file\" FILE. For example, TARGET might be
@@ -551,7 +567,8 @@ directory."
#~(activate-etc #$etc))))
(service-extension system-service-type etc-entry)))
(compose concatenate)
- (extend append)))
+ (extend append)
+ (description "Populate the @file{/etc} directory.")))
(define (etc-service files)
"Return a new service of ETC-SERVICE-TYPE that populates /etc with FILES.
@@ -566,7 +583,10 @@ FILES must be a list of name/file-like object pairs."
#~(activate-setuid-programs
(list #$@programs))))))
(compose concatenate)
- (extend append)))
+ (extend append)
+ (description
+ "Populate @file{/run/setuid-programs} with the specified
+executables, making them setuid-root.")))
(define (packages->profile-entry packages)
"Return a system entry for the profile containing PACKAGES."
@@ -583,7 +603,11 @@ FILES must be a list of name/file-like object pairs."
(list (service-extension system-service-type
packages->profile-entry)))
(compose concatenate)
- (extend append)))
+ (extend append)
+ (description
+ "This is the @dfn{system profile}, available as
+@file{/run/current-system/profile}. It contains packages that the sysadmin
+wants to be globally available to all the system users.")))
(define (firmware->activation-gexp firmware)
"Return a gexp to make the packages listed in FIRMWARE loadable by the
@@ -599,7 +623,11 @@ kernel."
(list (service-extension activation-service-type
firmware->activation-gexp)))
(compose concatenate)
- (extend append)))
+ (extend append)
+ (description
+ "Make ``firmware'' files loadable by the operating system
+kernel. Firmware may then be uploaded to some of the machine's devices, such
+as Wifi cards.")))
(define (gc-roots->system-entry roots)
"Return an entry in the system's output containing symlinks to ROOTS."
@@ -626,7 +654,10 @@ kernel."
(list (service-extension system-service-type
gc-roots->system-entry)))
(compose concatenate)
- (extend append)))
+ (extend append)
+ (description
+ "Register garbage-collector roots---i.e., store items that
+will not be reclaimed by the garbage collector.")))
;;;