static int verify_uptodate_sparse(struct cache_entry *ce, struct unpack_trees_options *o);
static int verify_absent_sparse(struct cache_entry *ce, enum unpack_trees_error_types, struct unpack_trees_options *o);
-static int will_have_skip_worktree(const struct cache_entry *ce, struct unpack_trees_options *o)
-{
- const char *basename;
-
- basename = strrchr(ce->name, '/');
- basename = basename ? basename+1 : ce->name;
- return excluded_from_list(ce->name, ce_namelen(ce), basename, NULL, o->el) <= 0;
-}
-
static int apply_sparse_checkout(struct cache_entry *ce, struct unpack_trees_options *o)
{
int was_skip_worktree = ce_skip_worktree(ce);
- if (!ce_stage(ce) && will_have_skip_worktree(ce, o))
+ if (ce->ce_flags & CE_NEW_SKIP_WORKTREE)
ce->ce_flags |= CE_SKIP_WORKTREE;
else
ce->ce_flags &= ~CE_SKIP_WORKTREE;
{
int i;
for (i = 0; i < index->cache_nr; i++)
- index->cache[i]->ce_flags &= ~CE_UNPACKED;
+ index->cache[i]->ce_flags &= ~(CE_UNPACKED | CE_ADDED | CE_NEW_SKIP_WORKTREE);
}
static int locate_in_src_index(struct cache_entry *ce,
static int unpack_index_entry(struct cache_entry *ce,
struct unpack_trees_options *o)
{
- struct cache_entry *src[5] = { NULL };
+ struct cache_entry *src[MAX_UNPACK_TREES + 1] = { NULL, };
int ret;
src[0] = ce;
return ret;
}
-static int traverse_trees_recursive(int n, unsigned long dirmask, unsigned long df_conflicts, struct name_entry *names, struct traverse_info *info)
+static int traverse_trees_recursive(int n, unsigned long dirmask,
+ unsigned long df_conflicts,
+ struct name_entry *names,
+ struct traverse_info *info)
{
int i, ret, bottom;
struct tree_desc t[MAX_UNPACK_TREES];
return mask;
}
+/* Whole directory matching */
+static int clear_ce_flags_dir(struct cache_entry **cache, int nr,
+ char *prefix, int prefix_len,
+ char *basename,
+ int select_mask, int clear_mask,
+ struct exclude_list *el)
+{
+ struct cache_entry **cache_end = cache + nr;
+ int dtype = DT_DIR;
+ int ret = excluded_from_list(prefix, prefix_len, basename, &dtype, el);
+
+ prefix[prefix_len++] = '/';
+
+ /* included, no clearing for any entries under this directory */
+ if (!ret) {
+ for (; cache != cache_end; cache++) {
+ struct cache_entry *ce = *cache;
+ if (strncmp(ce->name, prefix, prefix_len))
+ break;
+ }
+ return nr - (cache_end - cache);
+ }
+
+ /* excluded, clear all selected entries under this directory. */
+ if (ret == 1) {
+ for (; cache != cache_end; cache++) {
+ struct cache_entry *ce = *cache;
+ if (select_mask && !(ce->ce_flags & select_mask))
+ continue;
+ if (strncmp(ce->name, prefix, prefix_len))
+ break;
+ ce->ce_flags &= ~clear_mask;
+ }
+ return nr - (cache_end - cache);
+ }
+
+ return 0;
+}
+
+/*
+ * Traverse the index, find every entry that matches according to
+ * o->el. Do "ce_flags &= ~clear_mask" on those entries. Return the
+ * number of traversed entries.
+ *
+ * If select_mask is non-zero, only entries whose ce_flags has on of
+ * those bits enabled are traversed.
+ *
+ * cache : pointer to an index entry
+ * prefix_len : an offset to its path
+ *
+ * The current path ("prefix") including the trailing '/' is
+ * cache[0]->name[0..(prefix_len-1)]
+ * Top level path has prefix_len zero.
+ */
+static int clear_ce_flags_1(struct cache_entry **cache, int nr,
+ char *prefix, int prefix_len,
+ int select_mask, int clear_mask,
+ struct exclude_list *el)
+{
+ struct cache_entry **cache_end = cache + nr;
+
+ /*
+ * Process all entries that have the given prefix and meet
+ * select_mask condition
+ */
+ while(cache != cache_end) {
+ struct cache_entry *ce = *cache;
+ const char *name, *slash;
+ int len, dtype;
+
+ if (select_mask && !(ce->ce_flags & select_mask)) {
+ cache++;
+ continue;
+ }
+
+ if (prefix_len && strncmp(ce->name, prefix, prefix_len))
+ break;
+
+ name = ce->name + prefix_len;
+ slash = strchr(name, '/');
+
+ /* If it's a directory, try whole directory match first */
+ if (slash) {
+ int processed;
+
+ len = slash - name;
+ memcpy(prefix + prefix_len, name, len);
+
+ /*
+ * terminate the string (no trailing slash),
+ * clear_c_f_dir needs it
+ */
+ prefix[prefix_len + len] = '\0';
+ processed = clear_ce_flags_dir(cache, cache_end - cache,
+ prefix, prefix_len + len,
+ prefix + prefix_len,
+ select_mask, clear_mask,
+ el);
+
+ /* clear_c_f_dir eats a whole dir already? */
+ if (processed) {
+ cache += processed;
+ continue;
+ }
+
+ prefix[prefix_len + len++] = '/';
+ cache += clear_ce_flags_1(cache, cache_end - cache,
+ prefix, prefix_len + len,
+ select_mask, clear_mask, el);
+ continue;
+ }
+
+ /* Non-directory */
+ dtype = ce_to_dtype(ce);
+ if (excluded_from_list(ce->name, ce_namelen(ce), name, &dtype, el) > 0)
+ ce->ce_flags &= ~clear_mask;
+ cache++;
+ }
+ return nr - (cache_end - cache);
+}
+
+static int clear_ce_flags(struct cache_entry **cache, int nr,
+ int select_mask, int clear_mask,
+ struct exclude_list *el)
+{
+ char prefix[PATH_MAX];
+ return clear_ce_flags_1(cache, nr,
+ prefix, 0,
+ select_mask, clear_mask,
+ el);
+}
+
+/*
+ * Set/Clear CE_NEW_SKIP_WORKTREE according to $GIT_DIR/info/sparse-checkout
+ */
+static void mark_new_skip_worktree(struct exclude_list *el,
+ struct index_state *the_index,
+ int select_flag, int skip_wt_flag)
+{
+ int i;
+
+ /*
+ * 1. Pretend the narrowest worktree: only unmerged entries
+ * are checked out
+ */
+ for (i = 0; i < the_index->cache_nr; i++) {
+ struct cache_entry *ce = the_index->cache[i];
+
+ if (select_flag && !(ce->ce_flags & select_flag))
+ continue;
+
+ if (!ce_stage(ce))
+ ce->ce_flags |= skip_wt_flag;
+ else
+ ce->ce_flags &= ~skip_wt_flag;
+ }
+
+ /*
+ * 2. Widen worktree according to sparse-checkout file.
+ * Matched entries will have skip_wt_flag cleared (i.e. "in")
+ */
+ clear_ce_flags(the_index->cache, the_index->cache_nr,
+ select_flag, skip_wt_flag, el);
+}
+
+static int verify_absent(struct cache_entry *, enum unpack_trees_error_types, struct unpack_trees_options *);
/*
* N-way merge "len" trees. Returns 0 on success, -1 on failure to manipulate the
* resulting index, -2 on failure to reflect the changes to the work tree.
+ *
+ * CE_ADDED, CE_UNPACKED and CE_NEW_SKIP_WORKTREE are used internally
*/
int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options *o)
{
o->merge_size = len;
mark_all_ce_unused(o->src_index);
+ /*
+ * Sparse checkout loop #1: set NEW_SKIP_WORKTREE on existing entries
+ */
+ if (!o->skip_sparse_checkout)
+ mark_new_skip_worktree(o->el, o->src_index, 0, CE_NEW_SKIP_WORKTREE);
+
if (!dfc)
dfc = xcalloc(1, cache_entry_size(0));
o->df_conflict_entry = dfc;
if (!o->skip_sparse_checkout) {
int empty_worktree = 1;
- for (i = 0;i < o->result.cache_nr;i++) {
+
+ /*
+ * Sparse checkout loop #2: set NEW_SKIP_WORKTREE on entries not in loop #1
+ * If the will have NEW_SKIP_WORKTREE, also set CE_SKIP_WORKTREE
+ * so apply_sparse_checkout() won't attempt to remove it from worktree
+ */
+ mark_new_skip_worktree(o->el, &o->result, CE_ADDED, CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE);
+
+ for (i = 0; i < o->result.cache_nr; i++) {
struct cache_entry *ce = o->result.cache[i];
+ /*
+ * Entries marked with CE_ADDED in merged_entry() do not have
+ * verify_absent() check (the check is effectively disabled
+ * because CE_NEW_SKIP_WORKTREE is set unconditionally).
+ *
+ * Do the real check now because we have had
+ * correct CE_NEW_SKIP_WORKTREE
+ */
+ if (ce->ce_flags & CE_ADDED &&
+ verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o))
+ return -1;
+
if (apply_sparse_checkout(ce, o)) {
ret = -1;
goto done;
}
if (o->result.cache_nr && empty_worktree) {
+ /* dubious---why should this fail??? */
ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory");
goto done;
}
*o->dst_index = o->result;
done:
- for (i = 0;i < el.nr;i++)
- free(el.excludes[i]);
- if (el.excludes)
- free(el.excludes);
-
+ free_excludes(&el);
return ret;
return_failed:
static int verify_uptodate(struct cache_entry *ce,
struct unpack_trees_options *o)
{
- if (!o->skip_sparse_checkout && will_have_skip_worktree(ce, o))
+ if (!o->skip_sparse_checkout && (ce->ce_flags & CE_NEW_SKIP_WORKTREE))
return 0;
return verify_uptodate_1(ce, o, ERROR_NOT_UPTODATE_FILE);
}
char path[PATH_MAX + 1];
memcpy(path, ce->name, len);
path[len] = 0;
- lstat(path, &st);
+ if (lstat(path, &st))
+ return error("cannot stat '%s': %s", path,
+ strerror(errno));
return check_ok_to_remove(path, len, DT_UNKNOWN, NULL, &st,
error_type, o);
- } else if (!lstat(ce->name, &st))
+ } else if (lstat(ce->name, &st)) {
+ if (errno != ENOENT)
+ return error("cannot stat '%s': %s", ce->name,
+ strerror(errno));
+ return 0;
+ } else {
return check_ok_to_remove(ce->name, ce_namelen(ce),
- ce_to_dtype(ce), ce, &st,
- error_type, o);
-
- return 0;
+ ce_to_dtype(ce), ce, &st,
+ error_type, o);
+ }
}
static int verify_absent(struct cache_entry *ce,
enum unpack_trees_error_types error_type,
struct unpack_trees_options *o)
{
- if (!o->skip_sparse_checkout && will_have_skip_worktree(ce, o))
+ if (!o->skip_sparse_checkout && (ce->ce_flags & CE_NEW_SKIP_WORKTREE))
return 0;
return verify_absent_1(ce, error_type, o);
}
int update = CE_UPDATE;
if (!old) {
+ /*
+ * New index entries. In sparse checkout, the following
+ * verify_absent() will be delayed until after
+ * traverse_trees() finishes in unpack_trees(), then:
+ *
+ * - CE_NEW_SKIP_WORKTREE will be computed correctly
+ * - verify_absent() be called again, this time with
+ * correct CE_NEW_SKIP_WORKTREE
+ *
+ * verify_absent() call here does nothing in sparse
+ * checkout (i.e. o->skip_sparse_checkout == 0)
+ */
+ update |= CE_ADDED;
+ merge->ce_flags |= CE_NEW_SKIP_WORKTREE;
+
if (verify_absent(merge, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o))
return -1;
- if (!o->skip_sparse_checkout && will_have_skip_worktree(merge, o))
- update |= CE_SKIP_WORKTREE;
invalidate_ce_path(merge, o);
} else if (!(old->ce_flags & CE_CONFLICTED)) {
/*
} else {
if (verify_uptodate(old, o))
return -1;
- if (ce_skip_worktree(old))
- update |= CE_SKIP_WORKTREE;
+ /* Migrate old flags over */
+ update |= old->ce_flags & (CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE);
invalidate_ce_path(old, o);
}
} else {