When using the sparse-checkout feature git should not write to
the working directory for files with the skip-worktree bit on.
With the skip-worktree bit on the file may or may not be in
the working directory and if it is not we don't want or need to
create it by calling checkout_entry.
There are two callers of checkout_target. Both of which check
that the file does not exist before calling checkout_target.
load_current which make a call to lstat right before calling checkout_target
and check_preimage which will only run checkout_taret it stat_ret
is less than zero. It sets stat_ret to zero and only if
!stat->cached will it lstat the file and set stat_ret to
something other than zero.
This patch checks if skip-worktree bit is on in checkout_target
and just returns so that the entry doesn't not end up in the
working directory. This is so that apply will not create a file
in the working directory, then update the index but not keep the
working directory up to date with the changes that happened in the index.
Signed-off-by: Kevin Willford <kewillf@xxxxxxxxxxxxx>
---
apply.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/apply.c b/apply.c
index 0e2caeab9c..0da5d0b7c9 100644
--- a/apply.c
+++ b/apply.c
@@ -3327,6 +3327,24 @@ static int checkout_target(struct index_state *istate,
{
struct checkout costate = CHECKOUT_INIT;
+ /*
+ * Do not checkout the entry if the skipworktree bit is set
+ *
+ * Both callers of this method (check_preimage and load_current)
+ * check for the existance of the file before calling this
+ * method so we know that the file doesn't exist at this point
+ * and we don't need to perform that check again here.
+ * We just need to check the skip-worktree and return.
+ *
+ * This is to prevent git from creating a file in the
+ * working directory that has the skip-worktree bit on,
+ * then updating the index from the patch and not keeping
+ * the working directory version up to date with what it
+ * changed the index version to be.
+ */
+ if (ce_skip_worktree(ce))
+ return 0;
+
costate.refresh_cache = 1;
costate.istate = istate;
if (checkout_entry(ce, &costate, NULL) || lstat(ce->name, st))
--
2.12.2.windows.2.1.g7df5db8d31