[MinGW port] Unable to repack on Clearcase dynamic views

From: Nguyen Thai Ngoc Duy <pclouds@gmail.com>
Date: May 30, 2007, 14:42 UTC
Message-ID: <fcaeb9bf0705300742u22b54c78vccbc037fb553141f@mail.gmail.com>

Hi,

On clearcase dynamic views (kind of virtual drives), "mv -f a b" won't work if "a" is read-only. Because git-repack.sh removes all write permission before moving packs, it fails on clearcase dynamic views.

My approach is rather ugly. Does anyone have a better solution?

diff --git a/git-repack.sh b/git-repack.sh
index acb78ba..76a9525 100755
--- a/git-repack.sh
+++ b/git-repack.sh
@@ -86,10 +86,22 @@ else
 	mv -f "$PACKTMP-$name.idx"  "$PACKDIR/pack-$name.idx" &&
 	test -f "$PACKDIR/pack-$name.pack" &&
 	test -f "$PACKDIR/pack-$name.idx" || {
-		echo >&2 "Couldn't replace the existing pack with updated one."
-		echo >&2 "The original set of packs have been saved as"
-		echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
-		exit 1
+		# Clearcase dynamic views do not allow to move file without write permission
+		# Try the second time with write allowed
+		chmod u+w "$PACKTMP-$name.pack"
+		chmod u+w "$PACKTMP-$name.idx"
+
+		mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
+		mv -f "$PACKTMP-$name.idx"  "$PACKDIR/pack-$name.idx" &&
+		test -f "$PACKDIR/pack-$name.pack" &&
+		test -f "$PACKDIR/pack-$name.idx" || {
+			echo >&2 "Couldn't replace the existing pack with updated one."
+			echo >&2 "The original set of packs have been saved as"
+			echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
+			exit 1
+		}
+		chmod a-w "$PACKDIR/pack-$name.pack"
+		chmod a-w "$PACKDIR/pack-$name.idx"
 	}
 	rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
 fi

-- 
Duy