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unpack-trees(): ignore worktree check outside checkout area

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verify_absent() and verify_uptodate() are used to ensure worktree
is safe to be updated, then CE_REMOVE or CE_UPDATE will be set.
Finally check_updates() bases on CE_REMOVE, CE_UPDATE and the
recently added CE_WT_REMOVE to update working directory accordingly.

The entries that are checked may eventually be left out of checkout
area (done later in apply_sparse_checkout()). We don't want to update
outside checkout area. This patch teaches Git to assume "good",
skip these checks when it's sure those entries will be outside checkout
area, and clear CE_REMOVE|CE_UPDATE that could be set due to this
assumption.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2009-08-20 20:47:10 +07:00 committed by Junio C Hamano
parent e800ec9d72
commit f1f523eae9
1 changed files with 12 additions and 0 deletions
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12
unpack-trees.c
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@ -505,6 +505,14 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
ret = -1;
goto done;
}
/*
* Merge strategies may set CE_UPDATE|CE_REMOVE outside checkout
* area as a result of ce_skip_worktree() shortcuts in
* verify_absent() and verify_uptodate(). Clear them.
*/
if (ce_skip_worktree(ce))
ce->ce_flags &= ~(CE_UPDATE | CE_REMOVE);
}
}
@ -577,6 +585,8 @@ static int verify_uptodate_1(struct cache_entry *ce,
static int verify_uptodate(struct cache_entry *ce,
struct unpack_trees_options *o)
{
if (!o->skip_sparse_checkout && will_have_skip_worktree(ce, o))
return 0;
return verify_uptodate_1(ce, o, ERRORMSG(o, not_uptodate_file));
}
@ -776,6 +786,8 @@ static int verify_absent_1(struct cache_entry *ce, const char *action,
static int verify_absent(struct cache_entry *ce, const char *action,
struct unpack_trees_options *o)
{
if (!o->skip_sparse_checkout && will_have_skip_worktree(ce, o))
return 0;
return verify_absent_1(ce, action, o, ERRORMSG(o, would_lose_untracked));
}