#include "packfile.h"
#include "commit.h"
#include "object.h"
+#include "refs.h"
#include "revision.h"
#include "sha1-lookup.h"
#include "commit-graph.h"
struct commit *c;
struct object_id oid;
+ if (pos >= g->num_commits)
+ die("invalid parent position %"PRIu64, pos);
+
hashcpy(oid.hash, g->chunk_oid_lookup + g->hash_len * pos);
c = lookup_commit(&oid);
if (!c)
}
}
+static int add_ref_to_list(const char *refname,
+ const struct object_id *oid,
+ int flags, void *cb_data)
+{
+ struct string_list *list = (struct string_list *)cb_data;
+
+ string_list_append(list, oid_to_hex(oid));
+ return 0;
+}
+
+void write_commit_graph_reachable(const char *obj_dir, int append)
+{
+ struct string_list list;
+
+ string_list_init(&list, 1);
+ for_each_ref(add_ref_to_list, &list);
+ write_commit_graph(obj_dir, NULL, &list, append);
+}
+
void write_commit_graph(const char *obj_dir,
- const char **pack_indexes,
- int nr_packs,
- const char **commit_hex,
- int nr_commits,
+ struct string_list *pack_indexes,
+ struct string_list *commit_hex,
int append)
{
struct packed_oid_list oids;
int dirlen;
strbuf_addf(&packname, "%s/pack/", obj_dir);
dirlen = packname.len;
- for (i = 0; i < nr_packs; i++) {
+ for (i = 0; i < pack_indexes->nr; i++) {
struct packed_git *p;
strbuf_setlen(&packname, dirlen);
- strbuf_addstr(&packname, pack_indexes[i]);
+ strbuf_addstr(&packname, pack_indexes->items[i].string);
p = add_packed_git(packname.buf, packname.len, 1);
if (!p)
die("error adding pack %s", packname.buf);
}
if (commit_hex) {
- for (i = 0; i < nr_commits; i++) {
+ for (i = 0; i < commit_hex->nr; i++) {
const char *end;
struct object_id oid;
struct commit *result;
- if (commit_hex[i] && parse_oid_hex(commit_hex[i], &oid, &end))
+ if (commit_hex->items[i].string &&
+ parse_oid_hex(commit_hex->items[i].string, &oid, &end))
continue;
result = lookup_commit_reference_gently(&oid, 1);
oids.nr = 0;
}
+#define VERIFY_COMMIT_GRAPH_ERROR_HASH 2
static int verify_commit_graph_error;
static void graph_report(const char *fmt, ...)
va_end(ap);
}
+#define GENERATION_ZERO_EXISTS 1
+#define GENERATION_NUMBER_EXISTS 2
+
int verify_commit_graph(struct repository *r, struct commit_graph *g)
{
uint32_t i, cur_fanout_pos = 0;
- struct object_id prev_oid, cur_oid;
+ struct object_id prev_oid, cur_oid, checksum;
+ int generation_zero = 0;
+ struct hashfile *f;
+ int devnull;
if (!g) {
graph_report("no commit-graph file loaded");
if (verify_commit_graph_error)
return verify_commit_graph_error;
+ devnull = open("/dev/null", O_WRONLY);
+ f = hashfd(devnull, NULL);
+ hashwrite(f, g->data, g->data_len - g->hash_len);
+ finalize_hashfile(f, checksum.hash, CSUM_CLOSE);
+ if (hashcmp(checksum.hash, g->data + g->data_len - g->hash_len)) {
+ graph_report(_("the commit-graph file has incorrect checksum and is likely corrupt"));
+ verify_commit_graph_error = VERIFY_COMMIT_GRAPH_ERROR_HASH;
+ }
+
for (i = 0; i < g->num_commits; i++) {
+ struct commit *graph_commit;
+
hashcpy(cur_oid.hash, g->chunk_oid_lookup + g->hash_len * i);
if (i && oidcmp(&prev_oid, &cur_oid) >= 0)
cur_fanout_pos, fanout_value, i);
cur_fanout_pos++;
}
+
+ graph_commit = lookup_commit(&cur_oid);
+ if (!parse_commit_in_graph_one(g, graph_commit))
+ graph_report("failed to parse %s from commit-graph",
+ oid_to_hex(&cur_oid));
}
while (cur_fanout_pos < 256) {
cur_fanout_pos++;
}
- if (verify_commit_graph_error)
+ if (verify_commit_graph_error & ~VERIFY_COMMIT_GRAPH_ERROR_HASH)
return verify_commit_graph_error;
for (i = 0; i < g->num_commits; i++) {
- struct commit *odb_commit;
+ struct commit *graph_commit, *odb_commit;
+ struct commit_list *graph_parents, *odb_parents;
+ uint32_t max_generation = 0;
hashcpy(cur_oid.hash, g->chunk_oid_lookup + g->hash_len * i);
+ graph_commit = lookup_commit(&cur_oid);
odb_commit = (struct commit *)create_object(r, cur_oid.hash, alloc_commit_node(r));
if (parse_commit_internal(odb_commit, 0, 0)) {
graph_report("failed to parse %s from object database",
oid_to_hex(&cur_oid));
continue;
}
+
+ if (oidcmp(&get_commit_tree_in_graph_one(g, graph_commit)->object.oid,
+ get_commit_tree_oid(odb_commit)))
+ graph_report("root tree OID for commit %s in commit-graph is %s != %s",
+ oid_to_hex(&cur_oid),
+ oid_to_hex(get_commit_tree_oid(graph_commit)),
+ oid_to_hex(get_commit_tree_oid(odb_commit)));
+
+ graph_parents = graph_commit->parents;
+ odb_parents = odb_commit->parents;
+
+ while (graph_parents) {
+ if (odb_parents == NULL) {
+ graph_report("commit-graph parent list for commit %s is too long",
+ oid_to_hex(&cur_oid));
+ break;
+ }
+
+ if (oidcmp(&graph_parents->item->object.oid, &odb_parents->item->object.oid))
+ graph_report("commit-graph parent for %s is %s != %s",
+ oid_to_hex(&cur_oid),
+ oid_to_hex(&graph_parents->item->object.oid),
+ oid_to_hex(&odb_parents->item->object.oid));
+
+ if (graph_parents->item->generation > max_generation)
+ max_generation = graph_parents->item->generation;
+
+ graph_parents = graph_parents->next;
+ odb_parents = odb_parents->next;
+ }
+
+ if (odb_parents != NULL)
+ graph_report("commit-graph parent list for commit %s terminates early",
+ oid_to_hex(&cur_oid));
+
+ if (!graph_commit->generation) {
+ if (generation_zero == GENERATION_NUMBER_EXISTS)
+ graph_report("commit-graph has generation number zero for commit %s, but non-zero elsewhere",
+ oid_to_hex(&cur_oid));
+ generation_zero = GENERATION_ZERO_EXISTS;
+ } else if (generation_zero == GENERATION_ZERO_EXISTS)
+ graph_report("commit-graph has non-zero generation number for commit %s, but zero elsewhere",
+ oid_to_hex(&cur_oid));
+
+ if (generation_zero == GENERATION_ZERO_EXISTS)
+ continue;
+
+ /*
+ * If one of our parents has generation GENERATION_NUMBER_MAX, then
+ * our generation is also GENERATION_NUMBER_MAX. Decrement to avoid
+ * extra logic in the following condition.
+ */
+ if (max_generation == GENERATION_NUMBER_MAX)
+ max_generation--;
+
+ if (graph_commit->generation != max_generation + 1)
+ graph_report("commit-graph generation for commit %s is %u != %u",
+ oid_to_hex(&cur_oid),
+ graph_commit->generation,
+ max_generation + 1);
+
+ if (graph_commit->date != odb_commit->date)
+ graph_report("commit date for commit %s in commit-graph is %"PRItime" != %"PRItime,
+ oid_to_hex(&cur_oid),
+ graph_commit->date,
+ odb_commit->date);
}
return verify_commit_graph_error;