Dgit.pm: rename_link_xf: Always use cp

If we use mv on a symlink, it moves the link, not the file.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

1 files changed, 10 insertions, 6 deletions

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index 08a5b6c..19ea85b 100644
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -445,8 +445,7 @@ sub rename_link_xf ($$$) {
 	return 0;
     }
     $!=0; $?=0;
-    my @cmd = ($keeporig ? qw(cp) : qw(mv));
-    push @cmd, (qw(--), $src, "$dst.tmp");
+    my @cmd = (qw(cp --), $src, "$dst.tmp");
     debugcmd '+',@cmd;
     if (system @cmd) {
 	failedcmd_report_cmd undef, @cmd;
@@ -454,12 +453,17 @@ sub rename_link_xf ($$$) {
 	$! = -1;
 	return 0;
     }
-    if (rename "$dst.tmp", $dst) {
-	return 1;
-    } else {
-	$@ = f_ "finally install file after mv: %S", $!;
+    if (!rename "$dst.tmp", $dst) {
+	$@ = f_ "finally install file after cp: %S", $!;
 	return 0;
     }
+    if (!$keeporig) {
+	if (!unlink $src) {
+	    $@ = f_ "delete old file after cp: %S", $!;
+	    return 0;
+	}
+    }
+    return 1;
 }
 
 sub hashfile ($) {