Merge branch 'write-failure-fixes' of git://github.com/lheckemann/nix

tests/export.sh

@@ -8,6 +8,11 @@ nix-store --export $outPath > $TEST_ROOT/exp
 
 nix-store --export $(nix-store -qR $outPath) > $TEST_ROOT/exp_all
 
+if nix-store --export $outPath >/dev/full ; then
+    echo "exporting to a bad file descriptor should fail"
+    exit 1
+fi
+
 
 clearStore
 

tests/nar-access.sh

@@ -36,3 +36,9 @@ diff -u baz.cat-nar $storePath/foo/baz
 # Test missing files.
 nix ls-store --json -R $storePath/xyzzy 2>&1 | grep 'does not exist in NAR'
 nix ls-store $storePath/xyzzy 2>&1 | grep 'does not exist'
+
+# Test failure to dump.
+if nix-store --dump $storePath >/dev/full ; then
+    echo "dumping to /dev/full should fail"
+    exit -1
+fi