-/*
- * "refresh" does not calculate a new sha1 file or bring the
- * cache up-to-date for mode/content changes. But what it
- * _does_ do is to "re-match" the stat information of a file
- * with the cache, so that you can refresh the cache for a
- * file that hasn't been changed but where the stat entry is
- * out of date.
- *
- * For example, you'd want to do this after doing a "git-read-tree",
- * to link up the stat cache details with the proper files.
- */
-static struct cache_entry *refresh_entry(struct cache_entry *ce, int really)
-{
- struct stat st;
- struct cache_entry *updated;
- int changed, size;
-
- if (lstat(ce->name, &st) < 0)
- return ERR_PTR(-errno);
-
- changed = ce_match_stat(ce, &st, really);
- if (!changed) {
- if (really && assume_unchanged &&
- !(ce->ce_flags & htons(CE_VALID)))
- ; /* mark this one VALID again */
- else
- return NULL;
- }
-
- if (ce_modified(ce, &st, really))
- return ERR_PTR(-EINVAL);
-
- size = ce_size(ce);
- updated = xmalloc(size);
- memcpy(updated, ce, size);
- fill_stat_cache_info(updated, &st);
-
- /* In this case, if really is not set, we should leave
- * CE_VALID bit alone. Otherwise, paths marked with
- * --no-assume-unchanged (i.e. things to be edited) will
- * reacquire CE_VALID bit automatically, which is not
- * really what we want.
- */
- if (!really && assume_unchanged && !(ce->ce_flags & htons(CE_VALID)))
- updated->ce_flags &= ~htons(CE_VALID);
-
- return updated;
-}
-
-static int refresh_cache(int really)
-{
- int i;
- int has_errors = 0;
-
- for (i = 0; i < active_nr; i++) {
- struct cache_entry *ce, *new;
- ce = active_cache[i];
- if (ce_stage(ce)) {
- while ((i < active_nr) &&
- ! strcmp(active_cache[i]->name, ce->name))
- i++;
- i--;
- if (allow_unmerged)
- continue;
- printf("%s: needs merge\n", ce->name);
- has_errors = 1;
- continue;
- }
-
- new = refresh_entry(ce, really);
- if (!new)
- continue;
- if (IS_ERR(new)) {
- if (not_new && PTR_ERR(new) == -ENOENT)
- continue;
- if (really && PTR_ERR(new) == -EINVAL) {
- /* If we are doing --really-refresh that
- * means the index is not valid anymore.
- */
- ce->ce_flags &= ~htons(CE_VALID);
- active_cache_changed = 1;
- }
- if (quiet)
- continue;
- printf("%s: needs update\n", ce->name);
- has_errors = 1;
- continue;
- }
- active_cache_changed = 1;
- /* You can NOT just free active_cache[i] here, since it
- * might not be necessarily malloc()ed but can also come
- * from mmap(). */
- active_cache[i] = new;
- }
- return has_errors;
-}
-