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authorLudovic Courtès <ludo@gnu.org>2018-05-27 21:32:17 +0200
committerLudovic Courtès <ludo@gnu.org>2018-06-01 15:35:45 +0200
commit285cc75c3160421005ba0181490de4b290755b63 (patch)
treeba5737cfcb9c6ee78d81e11b9b084508599d4038
parent7f9d184d9b688d13ce76eefabaddcfa76bdde2b5 (diff)
database: 'register-path' resets timestamps.
* guix/store/database.scm (reset-timestamps): New procedure. (register-path): Use it.
-rw-r--r--guix/store/database.scm33
1 files changed, 32 insertions, 1 deletions
diff --git a/guix/store/database.scm b/guix/store/database.scm
index 4233219ba0..b9745dbe14 100644
--- a/guix/store/database.scm
+++ b/guix/store/database.scm
@@ -23,12 +23,14 @@
#:use-module (guix serialization)
#:use-module (guix base16)
#:use-module (guix hash)
+ #:use-module (guix build syscalls)
#:use-module (rnrs io ports)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-19)
#:use-module (ice-9 match)
#:export (sqlite-register
- register-path))
+ register-path
+ reset-timestamps))
;;; Code for working with the store database directly.
@@ -171,6 +173,34 @@ makes a wrapper around a port which implements GET-POSITION."
(close-port wrapper)
(values hash size)))))
+;; TODO: Factorize with that in (gnu build install).
+(define (reset-timestamps file)
+ "Reset the modification time on FILE and on all the files it contains, if
+it's a directory."
+ (let loop ((file file)
+ (type (stat:type (lstat file))))
+ (case type
+ ((directory)
+ (utime file 0 0 0 0)
+ (let ((parent file))
+ (for-each (match-lambda
+ (("." . _) #f)
+ ((".." . _) #f)
+ ((file . properties)
+ (let ((file (string-append parent "/" file)))
+ (loop file
+ (match (assoc-ref properties 'type)
+ ((or 'unknown #f)
+ (stat:type (lstat file)))
+ (type type))))))
+ (scandir* parent))))
+ ((symlink)
+ ;; FIXME: Implement bindings for 'futime' to reset the timestamps on
+ ;; symlinks.
+ #f)
+ (else
+ (utime file 0 0 0 0)))))
+
;; TODO: make this canonicalize store items that are registered. This involves
;; setting permissions and timestamps, I think. Also, run a "deduplication
;; pass", whatever that involves. Also, handle databases not existing yet
@@ -224,6 +254,7 @@ be used internally by the daemon's build hook."
(real-path (string-append store-dir "/" (basename path))))
(let-values (((hash nar-size)
(nar-sha256 real-path)))
+ (reset-timestamps real-path)
(sqlite-register
#:db-file (string-append db-dir "/db.sqlite")
#:path to-register