nar: Fix file descriptor leak when writing a Nar.

* guix/nar.scm (write-contents)[call-with-binary-input-file]: Always close PORT.
2013-09-22 22:13:51 +02:00 · 2013-09-22 22:13:51 +02:00 · 48e488eb2c
parent f566d765a1
commit 48e488eb2c
1 changed files with 5 additions and 4 deletions
--- a/guix/nar.scm
+++ b/guix/nar.scm
@ -76,10 +76,11 @@
    ;; avoid stat'ing like crazy.
    (with-fluids ((%file-port-name-canonicalization #f))
      (let ((port (open-file file "rb")))
-        (catch #t (cut proc port)
-          (lambda args
-            (close-port port)
-            (apply throw args))))))
+        (dynamic-wind
+          (const #t)
+          (cut proc port)
+          (lambda ()
+            (close-port port))))))

  (write-string "contents" p)
  (write-long-long size p)