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-rw-r--r--unpack-trees.c268
1 files changed, 205 insertions, 63 deletions
diff --git a/unpack-trees.c b/unpack-trees.c
index 1ecdab3304..6bbf58d28e 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -24,7 +24,7 @@
* situation better. See how "git checkout" and "git merge" replaces
* them using setup_unpack_trees_porcelain(), for example.
*/
-static const char *unpack_plumbing_errors[NB_UNPACK_TREES_ERROR_TYPES] = {
+static const char *unpack_plumbing_errors[NB_UNPACK_TREES_WARNING_TYPES] = {
/* ERROR_WOULD_OVERWRITE */
"Entry '%s' would be overwritten by merge. Cannot merge.",
@@ -43,17 +43,20 @@ static const char *unpack_plumbing_errors[NB_UNPACK_TREES_ERROR_TYPES] = {
/* ERROR_BIND_OVERLAP */
"Entry '%s' overlaps with '%s'. Cannot bind.",
- /* ERROR_SPARSE_NOT_UPTODATE_FILE */
- "Entry '%s' not uptodate. Cannot update sparse checkout.",
+ /* ERROR_WOULD_LOSE_SUBMODULE */
+ "Submodule '%s' cannot checkout new HEAD.",
- /* ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN */
- "Working tree file '%s' would be overwritten by sparse checkout update.",
+ /* NB_UNPACK_TREES_ERROR_TYPES; just a meta value */
+ "",
- /* ERROR_WOULD_LOSE_ORPHANED_REMOVED */
- "Working tree file '%s' would be removed by sparse checkout update.",
+ /* WARNING_SPARSE_NOT_UPTODATE_FILE */
+ "Path '%s' not uptodate; will not remove from working tree.",
- /* ERROR_WOULD_LOSE_SUBMODULE */
- "Submodule '%s' cannot checkout new HEAD.",
+ /* WARNING_SPARSE_UNMERGED_FILE */
+ "Path '%s' unmerged; will not remove from working tree.",
+
+ /* WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN */
+ "Path '%s' already present; will not overwrite with sparse update.",
};
#define ERRORMSG(o,type) \
@@ -168,15 +171,16 @@ void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
*/
msgs[ERROR_BIND_OVERLAP] = _("Entry '%s' overlaps with '%s'. Cannot bind.");
- msgs[ERROR_SPARSE_NOT_UPTODATE_FILE] =
- _("Cannot update sparse checkout: the following entries are not up to date:\n%s");
- msgs[ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN] =
- _("The following working tree files would be overwritten by sparse checkout update:\n%s");
- msgs[ERROR_WOULD_LOSE_ORPHANED_REMOVED] =
- _("The following working tree files would be removed by sparse checkout update:\n%s");
msgs[ERROR_WOULD_LOSE_SUBMODULE] =
_("Cannot update submodule:\n%s");
+ msgs[WARNING_SPARSE_NOT_UPTODATE_FILE] =
+ _("The following paths are not up to date and were left despite sparse patterns:\n%s");
+ msgs[WARNING_SPARSE_UNMERGED_FILE] =
+ _("The following paths are unmerged and were left despite sparse patterns:\n%s");
+ msgs[WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN] =
+ _("The following paths were already present and thus not updated despite sparse patterns:\n%s");
+
opts->show_all_errors = 1;
/* rejected paths may not have a static buffer */
for (i = 0; i < ARRAY_SIZE(opts->unpack_rejects); i++)
@@ -226,7 +230,7 @@ static int add_rejected_path(struct unpack_trees_options *o,
/*
* Otherwise, insert in a list for future display by
- * display_error_msgs()
+ * display_(error|warning)_msgs()
*/
string_list_append(&o->unpack_rejects[e], path);
return -1;
@@ -237,13 +241,16 @@ static int add_rejected_path(struct unpack_trees_options *o,
*/
static void display_error_msgs(struct unpack_trees_options *o)
{
- int e, i;
- int something_displayed = 0;
+ int e;
+ unsigned error_displayed = 0;
for (e = 0; e < NB_UNPACK_TREES_ERROR_TYPES; e++) {
struct string_list *rejects = &o->unpack_rejects[e];
+
if (rejects->nr > 0) {
+ int i;
struct strbuf path = STRBUF_INIT;
- something_displayed = 1;
+
+ error_displayed = 1;
for (i = 0; i < rejects->nr; i++)
strbuf_addf(&path, "\t%s\n", rejects->items[i].string);
error(ERRORMSG(o, e), super_prefixed(path.buf));
@@ -251,10 +258,36 @@ static void display_error_msgs(struct unpack_trees_options *o)
}
string_list_clear(rejects, 0);
}
- if (something_displayed)
+ if (error_displayed)
fprintf(stderr, _("Aborting\n"));
}
+/*
+ * display all the warning messages stored in a nice way
+ */
+static void display_warning_msgs(struct unpack_trees_options *o)
+{
+ int e;
+ unsigned warning_displayed = 0;
+ for (e = NB_UNPACK_TREES_ERROR_TYPES + 1;
+ e < NB_UNPACK_TREES_WARNING_TYPES; e++) {
+ struct string_list *rejects = &o->unpack_rejects[e];
+
+ if (rejects->nr > 0) {
+ int i;
+ struct strbuf path = STRBUF_INIT;
+
+ warning_displayed = 1;
+ for (i = 0; i < rejects->nr; i++)
+ strbuf_addf(&path, "\t%s\n", rejects->items[i].string);
+ warning(ERRORMSG(o, e), super_prefixed(path.buf));
+ strbuf_release(&path);
+ }
+ string_list_clear(rejects, 0);
+ }
+ if (warning_displayed)
+ fprintf(stderr, _("After fixing the above paths, you may want to run `git sparse-checkout reapply`.\n"));
+}
static int check_submodule_move_head(const struct cache_entry *ce,
const char *old_id,
const char *new_id,
@@ -357,12 +390,12 @@ static void report_collided_checkout(struct index_state *index)
string_list_clear(&list, 0);
}
-static int check_updates(struct unpack_trees_options *o)
+static int check_updates(struct unpack_trees_options *o,
+ struct index_state *index)
{
unsigned cnt = 0;
int errs = 0;
struct progress *progress;
- struct index_state *index = &o->result;
struct checkout state = CHECKOUT_INIT;
int i;
@@ -371,6 +404,7 @@ static int check_updates(struct unpack_trees_options *o)
state.quiet = 1;
state.refresh_cache = 1;
state.istate = index;
+ clone_checkout_metadata(&state.meta, &o->meta, NULL);
if (!o->update || o->dry_run) {
remove_marked_cache_entries(index, 0);
@@ -422,9 +456,8 @@ static int check_updates(struct unpack_trees_options *o)
continue;
oid_array_append(&to_fetch, &ce->oid);
}
- if (to_fetch.nr)
- promisor_remote_get_direct(the_repository,
- to_fetch.oid, to_fetch.nr);
+ promisor_remote_get_direct(the_repository,
+ to_fetch.oid, to_fetch.nr);
oid_array_clear(&to_fetch);
}
for (i = 0; i < index->cache_nr; i++) {
@@ -504,19 +537,39 @@ static int apply_sparse_checkout(struct index_state *istate,
* also stat info may have lost after merged_entry() so calling
* verify_uptodate() again may fail
*/
- if (!(ce->ce_flags & CE_UPDATE) && verify_uptodate_sparse(ce, o))
+ if (!(ce->ce_flags & CE_UPDATE) &&
+ verify_uptodate_sparse(ce, o)) {
+ ce->ce_flags &= ~CE_SKIP_WORKTREE;
return -1;
+ }
ce->ce_flags |= CE_WT_REMOVE;
ce->ce_flags &= ~CE_UPDATE;
}
if (was_skip_worktree && !ce_skip_worktree(ce)) {
- if (verify_absent_sparse(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o))
+ if (verify_absent_sparse(ce, WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN, o))
return -1;
ce->ce_flags |= CE_UPDATE;
}
return 0;
}
+static int warn_conflicted_path(struct index_state *istate,
+ int i,
+ struct unpack_trees_options *o)
+{
+ char *conflicting_path = istate->cache[i]->name;
+ int count = 0;
+
+ add_rejected_path(o, WARNING_SPARSE_UNMERGED_FILE, conflicting_path);
+
+ /* Find out how many higher stage entries at same path */
+ while (++count < istate->cache_nr &&
+ !strcmp(conflicting_path,
+ istate->cache[i+count]->name))
+ /* do nothing */;
+ return count;
+}
+
static inline int call_unpack_fn(const struct cache_entry * const *src,
struct unpack_trees_options *o)
{
@@ -1493,6 +1546,20 @@ static void mark_new_skip_worktree(struct pattern_list *pl,
clear_ce_flags(istate, select_flag, skip_wt_flag, pl, show_progress);
}
+static void populate_from_existing_patterns(struct unpack_trees_options *o,
+ struct pattern_list *pl)
+{
+ char *sparse = git_pathdup("info/sparse-checkout");
+
+ pl->use_cone_patterns = core_sparse_checkout_cone;
+ if (add_patterns_from_file_to_list(sparse, "", 0, pl, NULL) < 0)
+ o->skip_sparse_checkout = 1;
+ else
+ o->pl = pl;
+ free(sparse);
+}
+
+
static int verify_absent(const struct cache_entry *,
enum unpack_trees_error_types,
struct unpack_trees_options *);
@@ -1507,22 +1574,18 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
int i, ret;
static struct cache_entry *dfc;
struct pattern_list pl;
+ int free_pattern_list = 0;
if (len > MAX_UNPACK_TREES)
die("unpack_trees takes at most %d trees", MAX_UNPACK_TREES);
trace_performance_enter();
- memset(&pl, 0, sizeof(pl));
if (!core_apply_sparse_checkout || !o->update)
o->skip_sparse_checkout = 1;
if (!o->skip_sparse_checkout && !o->pl) {
- char *sparse = git_pathdup("info/sparse-checkout");
- pl.use_cone_patterns = core_sparse_checkout_cone;
- if (add_patterns_from_file_to_list(sparse, "", 0, &pl, NULL) < 0)
- o->skip_sparse_checkout = 1;
- else
- o->pl = &pl;
- free(sparse);
+ memset(&pl, 0, sizeof(pl));
+ free_pattern_list = 1;
+ populate_from_existing_patterns(o, &pl);
}
memset(&o->result, 0, sizeof(o->result));
@@ -1618,7 +1681,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
/*
* 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
+ * If they 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->pl, &o->result,
@@ -1638,23 +1701,15 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
* correct CE_NEW_SKIP_WORKTREE
*/
if (ce->ce_flags & CE_ADDED &&
- verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o)) {
- if (!o->show_all_errors)
- goto return_failed;
- ret = -1;
- }
+ verify_absent(ce, WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN, o))
+ ret = 1;
+
+ if (apply_sparse_checkout(&o->result, ce, o))
+ ret = 1;
- if (apply_sparse_checkout(&o->result, ce, o)) {
- if (!o->show_all_errors)
- goto return_failed;
- ret = -1;
- }
if (!ce_skip_worktree(ce))
empty_worktree = 0;
-
}
- if (ret < 0)
- goto return_failed;
/*
* Sparse checkout is meant to narrow down checkout area
* but it does not make sense to narrow down to empty working
@@ -1665,9 +1720,18 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory");
goto done;
}
+ if (ret == 1) {
+ /*
+ * Inability to sparsify or de-sparsify individual
+ * paths is not an error, but just a warning.
+ */
+ if (o->show_all_errors)
+ display_warning_msgs(o);
+ ret = 0;
+ }
}
- ret = check_updates(o) ? (-2) : 0;
+ ret = check_updates(o, &o->result) ? (-2) : 0;
if (o->dst_index) {
move_index_extensions(&o->result, o->src_index);
if (!ret) {
@@ -1690,9 +1754,9 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
o->src_index = NULL;
done:
- trace_performance_leave("unpack_trees");
- if (!o->keep_pattern_list)
+ if (free_pattern_list)
clear_pattern_list(&pl);
+ trace_performance_leave("unpack_trees");
return ret;
return_failed:
@@ -1705,6 +1769,91 @@ return_failed:
goto done;
}
+/*
+ * Update SKIP_WORKTREE bits according to sparsity patterns, and update
+ * working directory to match.
+ *
+ * CE_NEW_SKIP_WORKTREE is used internally.
+ */
+enum update_sparsity_result update_sparsity(struct unpack_trees_options *o)
+{
+ enum update_sparsity_result ret = UPDATE_SPARSITY_SUCCESS;
+ struct pattern_list pl;
+ int i, empty_worktree;
+ unsigned old_show_all_errors;
+ int free_pattern_list = 0;
+
+ old_show_all_errors = o->show_all_errors;
+ o->show_all_errors = 1;
+
+ /* Sanity checks */
+ if (!o->update || o->index_only || o->skip_sparse_checkout)
+ BUG("update_sparsity() is for reflecting sparsity patterns in working directory");
+ if (o->src_index != o->dst_index || o->fn)
+ BUG("update_sparsity() called wrong");
+
+ trace_performance_enter();
+
+ /* If we weren't given patterns, use the recorded ones */
+ if (!o->pl) {
+ memset(&pl, 0, sizeof(pl));
+ free_pattern_list = 1;
+ populate_from_existing_patterns(o, &pl);
+ if (o->skip_sparse_checkout)
+ goto skip_sparse_checkout;
+ }
+
+ /* Set NEW_SKIP_WORKTREE on existing entries. */
+ mark_all_ce_unused(o->src_index);
+ mark_new_skip_worktree(o->pl, o->src_index, 0,
+ CE_NEW_SKIP_WORKTREE, o->verbose_update);
+
+ /* Then loop over entries and update/remove as needed */
+ ret = UPDATE_SPARSITY_SUCCESS;
+ empty_worktree = 1;
+ for (i = 0; i < o->src_index->cache_nr; i++) {
+ struct cache_entry *ce = o->src_index->cache[i];
+
+
+ if (ce_stage(ce)) {
+ /* -1 because for loop will increment by 1 */
+ i += warn_conflicted_path(o->src_index, i, o) - 1;
+ ret = UPDATE_SPARSITY_WARNINGS;
+ continue;
+ }
+
+ if (apply_sparse_checkout(o->src_index, ce, o))
+ ret = UPDATE_SPARSITY_WARNINGS;
+
+ if (!ce_skip_worktree(ce))
+ empty_worktree = 0;
+ }
+
+ /*
+ * Sparse checkout is meant to narrow down checkout area
+ * but it does not make sense to narrow down to empty working
+ * tree. This is usually a mistake in sparse checkout rules.
+ * Do not allow users to do that.
+ */
+ if (o->src_index->cache_nr && empty_worktree) {
+ unpack_failed(o, "Sparse checkout leaves no entry on working directory");
+ ret = UPDATE_SPARSITY_INDEX_UPDATE_FAILURES;
+ goto done;
+ }
+
+skip_sparse_checkout:
+ if (check_updates(o, o->src_index))
+ ret = UPDATE_SPARSITY_WORKTREE_UPDATE_FAILURES;
+
+done:
+ display_warning_msgs(o);
+ o->show_all_errors = old_show_all_errors;
+ if (free_pattern_list)
+ clear_pattern_list(&pl);
+ trace_performance_leave("update_sparsity");
+ return ret;
+}
+
/* Here come the merge functions */
static int reject_merge(const struct cache_entry *ce,
@@ -1789,7 +1938,7 @@ int verify_uptodate(const struct cache_entry *ce,
static int verify_uptodate_sparse(const struct cache_entry *ce,
struct unpack_trees_options *o)
{
- return verify_uptodate_1(ce, o, ERROR_SPARSE_NOT_UPTODATE_FILE);
+ return verify_uptodate_1(ce, o, WARNING_SPARSE_NOT_UPTODATE_FILE);
}
/*
@@ -1815,9 +1964,6 @@ static void invalidate_ce_path(const struct cache_entry *ce,
/*
* Check that checking out ce->sha1 in subdir ce->name is not
* going to overwrite any working files.
- *
- * Currently, git does not checkout subprojects during a superproject
- * checkout, so it is not going to overwrite anything.
*/
static int verify_clean_submodule(const char *old_sha1,
const struct cache_entry *ce,
@@ -2030,11 +2176,7 @@ static int verify_absent_sparse(const struct cache_entry *ce,
enum unpack_trees_error_types error_type,
struct unpack_trees_options *o)
{
- enum unpack_trees_error_types orphaned_error = error_type;
- if (orphaned_error == ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN)
- orphaned_error = ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN;
-
- return verify_absent_1(ce, orphaned_error, o);
+ return verify_absent_1(ce, error_type, o);
}
static int merged_entry(const struct cache_entry *ce,
@@ -2067,7 +2209,7 @@ static int merged_entry(const struct cache_entry *ce,
}
invalidate_ce_path(merge, o);
- if (submodule_from_ce(ce)) {
+ if (submodule_from_ce(ce) && file_exists(ce->name)) {
int ret = check_submodule_move_head(ce, NULL,
oid_to_hex(&ce->oid),
o);
@@ -2096,7 +2238,7 @@ static int merged_entry(const struct cache_entry *ce,
invalidate_ce_path(old, o);
}
- if (submodule_from_ce(ce)) {
+ if (submodule_from_ce(ce) && file_exists(ce->name)) {
int ret = check_submodule_move_head(ce, oid_to_hex(&old->oid),
oid_to_hex(&ce->oid),
o);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 09:14:15 +0000