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authorLudovic Courtès <ludo@gnu.org>2015-10-17 11:57:38 +0200
committerLudovic Courtès <ludo@gnu.org>2015-10-17 11:57:38 +0200
commit78981bb9bd66ba65af133fda6474664c330f30c4 (patch)
tree5b228e519e185aea3890d8eb125945f1e2b3fc78
parent0e3cc3116de1145545a51d598bece890eb6d8424 (diff)
file-systems: Do not truncate mount points that already exist.
Reported by David Thompson <dthompson2@worcester.edu> at <https://lists.gnu.org/archive/html/guix-devel/2015-10/msg00284.html>. * gnu/build/file-systems.scm (mount-file-system): When SOURCE matches 'regular-file?', do not create MOUNT-POINT if it already exists. This fixes a bug whereby we would be truncating MOUNT-POINT if it already existed.
-rw-r--r--gnu/build/file-systems.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/build/file-systems.scm b/gnu/build/file-systems.scm
index 377bec278e..00af35d3df 100644
--- a/gnu/build/file-systems.scm
+++ b/gnu/build/file-systems.scm
@@ -348,7 +348,7 @@ run a file system check."
;; in the case of a bind mount, a regular file may be needed.
(if (and (= MS_BIND (logand flags MS_BIND))
(regular-file? source))
- (begin
+ (unless (file-exists? mount-point)
(mkdir-p (dirname mount-point))
(call-with-output-file mount-point (const #t)))
(mkdir-p mount-point))