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-rw-r--r--merge-ort.c186
1 files changed, 121 insertions, 65 deletions
diff --git a/merge-ort.c b/merge-ort.c
index 3a5729c91e..ac225cc33c 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -18,8 +18,8 @@
#include "merge-ort.h"
#include "alloc.h"
+#include "advice.h"
#include "attr.h"
-#include "blob.h"
#include "cache-tree.h"
#include "commit.h"
#include "commit-reach.h"
@@ -39,11 +39,10 @@
#include "path.h"
#include "promisor-remote.h"
#include "read-cache-ll.h"
+#include "refs.h"
#include "revision.h"
#include "sparse-index.h"
#include "strmap.h"
-#include "submodule-config.h"
-#include "submodule.h"
#include "trace2.h"
#include "tree.h"
#include "unpack-trees.h"
@@ -544,6 +543,7 @@ enum conflict_and_info_types {
CONFLICT_SUBMODULE_HISTORY_NOT_AVAILABLE,
CONFLICT_SUBMODULE_MAY_HAVE_REWINDS,
CONFLICT_SUBMODULE_NULL_MERGE_BASE,
+ CONFLICT_SUBMODULE_CORRUPT,
/* Keep this entry _last_ in the list */
NB_CONFLICT_TYPES,
@@ -596,7 +596,9 @@ static const char *type_short_descriptions[] = {
[CONFLICT_SUBMODULE_MAY_HAVE_REWINDS] =
"CONFLICT (submodule may have rewinds)",
[CONFLICT_SUBMODULE_NULL_MERGE_BASE] =
- "CONFLICT (submodule lacks merge base)"
+ "CONFLICT (submodule lacks merge base)",
+ [CONFLICT_SUBMODULE_CORRUPT] =
+ "CONFLICT (submodule corrupt)"
};
struct logical_conflict_info {
@@ -721,23 +723,6 @@ static void clear_or_reinit_internal_opts(struct merge_options_internal *opti,
renames->callback_data_nr = renames->callback_data_alloc = 0;
}
-__attribute__((format (printf, 2, 3)))
-static int err(struct merge_options *opt, const char *err, ...)
-{
- va_list params;
- struct strbuf sb = STRBUF_INIT;
-
- strbuf_addstr(&sb, "error: ");
- va_start(params, err);
- strbuf_vaddf(&sb, err, params);
- va_end(params);
-
- error("%s", sb.buf);
- strbuf_release(&sb);
-
- return -1;
-}
-
static void format_commit(struct strbuf *sb,
int indent,
struct repository *repo,
@@ -1676,9 +1661,10 @@ static int collect_merge_info(struct merge_options *opt,
info.data = opt;
info.show_all_errors = 1;
- parse_tree(merge_base);
- parse_tree(side1);
- parse_tree(side2);
+ if (parse_tree(merge_base) < 0 ||
+ parse_tree(side1) < 0 ||
+ parse_tree(side2) < 0)
+ return -1;
init_tree_desc(t + 0, &merge_base->object.oid,
merge_base->buffer, merge_base->size);
init_tree_desc(t + 1, &side1->object.oid, side1->buffer, side1->size);
@@ -1728,7 +1714,14 @@ static int find_first_merges(struct repository *repo,
die("revision walk setup failed");
while ((commit = get_revision(&revs)) != NULL) {
struct object *o = &(commit->object);
- if (repo_in_merge_bases(repo, b, commit))
+ int ret = repo_in_merge_bases(repo, b, commit);
+
+ if (ret < 0) {
+ object_array_clear(&merges);
+ release_revisions(&revs);
+ return ret;
+ }
+ if (ret > 0)
add_object_array(o, NULL, &merges);
}
reset_revision_walk();
@@ -1743,9 +1736,17 @@ static int find_first_merges(struct repository *repo,
contains_another = 0;
for (j = 0; j < merges.nr; j++) {
struct commit *m2 = (struct commit *) merges.objects[j].item;
- if (i != j && repo_in_merge_bases(repo, m2, m1)) {
- contains_another = 1;
- break;
+ if (i != j) {
+ int ret = repo_in_merge_bases(repo, m2, m1);
+ if (ret < 0) {
+ object_array_clear(&merges);
+ release_revisions(&revs);
+ return ret;
+ }
+ if (ret > 0) {
+ contains_another = 1;
+ break;
+ }
}
}
@@ -1767,7 +1768,7 @@ static int merge_submodule(struct merge_options *opt,
{
struct repository subrepo;
struct strbuf sb = STRBUF_INIT;
- int ret = 0;
+ int ret = 0, ret2;
struct commit *commit_o, *commit_a, *commit_b;
int parent_count;
struct object_array merges;
@@ -1814,8 +1815,28 @@ static int merge_submodule(struct merge_options *opt,
}
/* check whether both changes are forward */
- if (!repo_in_merge_bases(&subrepo, commit_o, commit_a) ||
- !repo_in_merge_bases(&subrepo, commit_o, commit_b)) {
+ ret2 = repo_in_merge_bases(&subrepo, commit_o, commit_a);
+ if (ret2 < 0) {
+ path_msg(opt, CONFLICT_SUBMODULE_CORRUPT, 0,
+ path, NULL, NULL, NULL,
+ _("Failed to merge submodule %s "
+ "(repository corrupt)"),
+ path);
+ ret = -1;
+ goto cleanup;
+ }
+ if (ret2 > 0)
+ ret2 = repo_in_merge_bases(&subrepo, commit_o, commit_b);
+ if (ret2 < 0) {
+ path_msg(opt, CONFLICT_SUBMODULE_CORRUPT, 0,
+ path, NULL, NULL, NULL,
+ _("Failed to merge submodule %s "
+ "(repository corrupt)"),
+ path);
+ ret = -1;
+ goto cleanup;
+ }
+ if (!ret2) {
path_msg(opt, CONFLICT_SUBMODULE_MAY_HAVE_REWINDS, 0,
path, NULL, NULL, NULL,
_("Failed to merge submodule %s "
@@ -1825,7 +1846,17 @@ static int merge_submodule(struct merge_options *opt,
}
/* Case #1: a is contained in b or vice versa */
- if (repo_in_merge_bases(&subrepo, commit_a, commit_b)) {
+ ret2 = repo_in_merge_bases(&subrepo, commit_a, commit_b);
+ if (ret2 < 0) {
+ path_msg(opt, CONFLICT_SUBMODULE_CORRUPT, 0,
+ path, NULL, NULL, NULL,
+ _("Failed to merge submodule %s "
+ "(repository corrupt)"),
+ path);
+ ret = -1;
+ goto cleanup;
+ }
+ if (ret2 > 0) {
oidcpy(result, b);
path_msg(opt, INFO_SUBMODULE_FAST_FORWARDING, 1,
path, NULL, NULL, NULL,
@@ -1834,7 +1865,17 @@ static int merge_submodule(struct merge_options *opt,
ret = 1;
goto cleanup;
}
- if (repo_in_merge_bases(&subrepo, commit_b, commit_a)) {
+ ret2 = repo_in_merge_bases(&subrepo, commit_b, commit_a);
+ if (ret2 < 0) {
+ path_msg(opt, CONFLICT_SUBMODULE_CORRUPT, 0,
+ path, NULL, NULL, NULL,
+ _("Failed to merge submodule %s "
+ "(repository corrupt)"),
+ path);
+ ret = -1;
+ goto cleanup;
+ }
+ if (ret2 > 0) {
oidcpy(result, a);
path_msg(opt, INFO_SUBMODULE_FAST_FORWARDING, 1,
path, NULL, NULL, NULL,
@@ -1859,6 +1900,14 @@ static int merge_submodule(struct merge_options *opt,
parent_count = find_first_merges(&subrepo, path, commit_a, commit_b,
&merges);
switch (parent_count) {
+ case -1:
+ path_msg(opt, CONFLICT_SUBMODULE_CORRUPT, 0,
+ path, NULL, NULL, NULL,
+ _("Failed to merge submodule %s "
+ "(repository corrupt)"),
+ path);
+ ret = -1;
+ break;
case 0:
path_msg(opt, CONFLICT_SUBMODULE_FAILED_TO_MERGE, 0,
path, NULL, NULL, NULL,
@@ -1920,6 +1969,7 @@ static void initialize_attr_index(struct merge_options *opt)
struct index_state *attr_index = &opt->priv->attr_index;
struct cache_entry *ce;
+ attr_index->repo = opt->repo;
attr_index->initialized = 1;
if (!opt->renormalize)
@@ -2054,7 +2104,7 @@ static int handle_content_merge(struct merge_options *opt,
* the three blobs to merge on various sides of history.
*
* extra_marker_size is the amount to extend conflict markers in
- * ll_merge; this is neeed if we have content merges of content
+ * ll_merge; this is needed if we have content merges of content
* merges, which happens for example with rename/rename(2to1) and
* rename/add conflicts.
*/
@@ -2123,13 +2173,12 @@ static int handle_content_merge(struct merge_options *opt,
&result_buf);
if ((merge_status < 0) || !result_buf.ptr)
- ret = err(opt, _("Failed to execute internal merge"));
+ ret = error(_("failed to execute internal merge"));
if (!ret &&
write_object_file(result_buf.ptr, result_buf.size,
OBJ_BLOB, &result->oid))
- ret = err(opt, _("Unable to add %s to database"),
- path);
+ ret = error(_("unable to add %s to database"), path);
free(result_buf.ptr);
if (ret)
@@ -2662,7 +2711,7 @@ static void apply_directory_rename_modifications(struct merge_options *opt,
oidcpy(&ci->stages[i].oid, null_oid());
}
- // Now we want to focus on new_ci, so reassign ci to it
+ /* Now we want to focus on new_ci, so reassign ci to it. */
ci = new_ci;
}
@@ -3343,10 +3392,7 @@ static int collect_renames(struct merge_options *opt,
return clean;
}
-static int detect_and_process_renames(struct merge_options *opt,
- struct tree *merge_base,
- struct tree *side1,
- struct tree *side2)
+static int detect_and_process_renames(struct merge_options *opt)
{
struct diff_queue_struct combined = { 0 };
struct rename_info *renames = &opt->priv->renames;
@@ -3510,8 +3556,7 @@ static int sort_dirs_next_to_their_children(const char *one, const char *two)
return c1 - c2;
}
-static int read_oid_strbuf(struct merge_options *opt,
- const struct object_id *oid,
+static int read_oid_strbuf(const struct object_id *oid,
struct strbuf *dst)
{
void *buf;
@@ -3519,10 +3564,10 @@ static int read_oid_strbuf(struct merge_options *opt,
unsigned long size;
buf = repo_read_object_file(the_repository, oid, &type, &size);
if (!buf)
- return err(opt, _("cannot read object %s"), oid_to_hex(oid));
+ return error(_("cannot read object %s"), oid_to_hex(oid));
if (type != OBJ_BLOB) {
free(buf);
- return err(opt, _("object %s is not a blob"), oid_to_hex(oid));
+ return error(_("object %s is not a blob"), oid_to_hex(oid));
}
strbuf_attach(dst, buf, size, size + 1);
return 0;
@@ -3546,8 +3591,8 @@ static int blob_unchanged(struct merge_options *opt,
if (oideq(&base->oid, &side->oid))
return 1;
- if (read_oid_strbuf(opt, &base->oid, &basebuf) ||
- read_oid_strbuf(opt, &side->oid, &sidebuf))
+ if (read_oid_strbuf(&base->oid, &basebuf) ||
+ read_oid_strbuf(&side->oid, &sidebuf))
goto error_return;
/*
* Note: binary | is used so that both renormalizations are
@@ -4400,9 +4445,11 @@ static int checkout(struct merge_options *opt,
unpack_opts.verbose_update = (opt->verbosity > 2);
unpack_opts.fn = twoway_merge;
unpack_opts.preserve_ignored = 0; /* FIXME: !opts->overwrite_ignore */
- parse_tree(prev);
+ if (parse_tree(prev) < 0)
+ return -1;
init_tree_desc(&trees[0], &prev->object.oid, prev->buffer, prev->size);
- parse_tree(next);
+ if (parse_tree(next) < 0)
+ return -1;
init_tree_desc(&trees[1], &next->object.oid, next->buffer, next->size);
ret = unpack_trees(2, trees, &unpack_opts);
@@ -4580,7 +4627,7 @@ static void print_submodule_conflict_suggestion(struct string_list *csub) {
" - commit the resulting index in the superproject\n"),
tmp.buf, subs.buf);
- printf("%s", msg.buf);
+ advise_if_enabled(ADVICE_SUBMODULE_MERGE_CONFLICT, "%s", msg.buf);
strbuf_release(&subs);
strbuf_release(&tmp);
@@ -4684,9 +4731,6 @@ void merge_switch_to_result(struct merge_options *opt,
{
assert(opt->priv == NULL);
if (result->clean >= 0 && update_worktree_and_index) {
- const char *filename;
- FILE *fp;
-
trace2_region_enter("merge", "checkout", opt->repo);
if (checkout(opt, head, result->tree)) {
/* failure to function */
@@ -4712,10 +4756,17 @@ void merge_switch_to_result(struct merge_options *opt,
trace2_region_leave("merge", "record_conflicted", opt->repo);
trace2_region_enter("merge", "write_auto_merge", opt->repo);
- filename = git_path_auto_merge(opt->repo);
- fp = xfopen(filename, "w");
- fprintf(fp, "%s\n", oid_to_hex(&result->tree->object.oid));
- fclose(fp);
+ if (refs_update_ref(get_main_ref_store(opt->repo), "", "AUTO_MERGE",
+ &result->tree->object.oid, NULL, REF_NO_DEREF,
+ UPDATE_REFS_MSG_ON_ERR)) {
+ /* failure to function */
+ opt->priv = NULL;
+ result->clean = -1;
+ merge_finalize(opt, result);
+ trace2_region_leave("merge", "write_auto_merge",
+ opt->repo);
+ return;
+ }
trace2_region_leave("merge", "write_auto_merge", opt->repo);
}
if (display_update_msgs)
@@ -4903,8 +4954,7 @@ static void merge_start(struct merge_options *opt, struct merge_result *result)
trace2_region_leave("merge", "allocate/init", opt->repo);
}
-static void merge_check_renames_reusable(struct merge_options *opt,
- struct merge_result *result,
+static void merge_check_renames_reusable(struct merge_result *result,
struct tree *merge_base,
struct tree *side1,
struct tree *side2)
@@ -4974,7 +5024,7 @@ redo:
* TRANSLATORS: The %s arguments are: 1) tree hash of a merge
* base, and 2-3) the trees for the two trees we're merging.
*/
- err(opt, _("collecting merge info failed for trees %s, %s, %s"),
+ error(_("collecting merge info failed for trees %s, %s, %s"),
oid_to_hex(&merge_base->object.oid),
oid_to_hex(&side1->object.oid),
oid_to_hex(&side2->object.oid));
@@ -4984,8 +5034,7 @@ redo:
trace2_region_leave("merge", "collect_merge_info", opt->repo);
trace2_region_enter("merge", "renames", opt->repo);
- result->clean = detect_and_process_renames(opt, merge_base,
- side1, side2);
+ result->clean = detect_and_process_renames(opt);
trace2_region_leave("merge", "renames", opt->repo);
if (opt->priv->renames.redo_after_renames == 2) {
trace2_region_enter("merge", "reset_maps", opt->repo);
@@ -5004,6 +5053,9 @@ redo:
if (result->clean >= 0) {
result->tree = parse_tree_indirect(&working_tree_oid);
+ if (!result->tree)
+ die(_("unable to read tree (%s)"),
+ oid_to_hex(&working_tree_oid));
/* existence of conflicted entries implies unclean */
result->clean &= strmap_empty(&opt->priv->conflicted);
}
@@ -5029,7 +5081,11 @@ static void merge_ort_internal(struct merge_options *opt,
struct strbuf merge_base_abbrev = STRBUF_INIT;
if (!merge_bases) {
- merge_bases = repo_get_merge_bases(the_repository, h1, h2);
+ if (repo_get_merge_bases(the_repository, h1, h2,
+ &merge_bases) < 0) {
+ result->clean = -1;
+ return;
+ }
/* See merge-ort.h:merge_incore_recursive() declaration NOTE */
merge_bases = reverse_commit_list(merge_bases);
}
@@ -5107,7 +5163,7 @@ void merge_incore_nonrecursive(struct merge_options *opt,
trace2_region_enter("merge", "merge_start", opt->repo);
assert(opt->ancestor != NULL);
- merge_check_renames_reusable(opt, result, merge_base, side1, side2);
+ merge_check_renames_reusable(result, merge_base, side1, side2);
merge_start(opt, result);
/*
* Record the trees used in this merge, so if there's a next merge in
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-30 03:40:05 +0000