diff options
Diffstat (limited to 'commit.c')
| -rw-r--r-- | commit.c | 178 |
1 files changed, 149 insertions, 29 deletions
@@ -17,6 +17,8 @@ #include "sha1-lookup.h" #include "wt-status.h" #include "advice.h" +#include "refs.h" +#include "commit-reach.h" static struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **); @@ -209,7 +211,7 @@ static int read_graft_file(struct repository *r, const char *graft_file) return 0; } -static void prepare_commit_graft(struct repository *r) +void prepare_commit_graft(struct repository *r) { char *graft_file; @@ -297,13 +299,15 @@ const void *get_cached_commit_buffer(struct repository *r, const struct commit * return v->buffer; } -const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep) +const void *repo_get_commit_buffer(struct repository *r, + const struct commit *commit, + unsigned long *sizep) { - const void *ret = get_cached_commit_buffer(the_repository, commit, sizep); + const void *ret = get_cached_commit_buffer(r, commit, sizep); if (!ret) { enum object_type type; unsigned long size; - ret = read_object_file(&commit->object.oid, &type, &size); + ret = repo_read_object_file(r, &commit->object.oid, &type, &size); if (!ret) die("cannot read commit object %s", oid_to_hex(&commit->object.oid)); @@ -316,33 +320,41 @@ const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep) return ret; } -void unuse_commit_buffer(const struct commit *commit, const void *buffer) +void repo_unuse_commit_buffer(struct repository *r, + const struct commit *commit, + const void *buffer) { struct commit_buffer *v = buffer_slab_peek( - the_repository->parsed_objects->buffer_slab, commit); + r->parsed_objects->buffer_slab, commit); if (!(v && v->buffer == buffer)) free((void *)buffer); } -void free_commit_buffer(struct commit *commit) +void free_commit_buffer(struct parsed_object_pool *pool, struct commit *commit) { struct commit_buffer *v = buffer_slab_peek( - the_repository->parsed_objects->buffer_slab, commit); + pool->buffer_slab, commit); if (v) { FREE_AND_NULL(v->buffer); v->size = 0; } } -struct tree *get_commit_tree(const struct commit *commit) +static inline void set_commit_tree(struct commit *c, struct tree *t) +{ + c->maybe_tree = t; +} + +struct tree *repo_get_commit_tree(struct repository *r, + const struct commit *commit) { if (commit->maybe_tree || !commit->object.parsed) return commit->maybe_tree; - if (commit->graph_pos == COMMIT_NOT_FROM_GRAPH) - BUG("commit has NULL tree, but was not loaded from commit-graph"); + if (commit->graph_pos != COMMIT_NOT_FROM_GRAPH) + return get_commit_tree_in_graph(r, commit); - return get_commit_tree_in_graph(the_repository, commit); + return NULL; } struct object_id *get_commit_tree_oid(const struct commit *commit) @@ -350,13 +362,12 @@ struct object_id *get_commit_tree_oid(const struct commit *commit) return &get_commit_tree(commit)->object.oid; } -void release_commit_memory(struct commit *c) +void release_commit_memory(struct parsed_object_pool *pool, struct commit *c) { - c->maybe_tree = NULL; + set_commit_tree(c, NULL); c->index = 0; - free_commit_buffer(c); + free_commit_buffer(pool, c); free_commit_list(c->parents); - /* TODO: what about commit->util? */ c->object.parsed = 0; } @@ -401,7 +412,7 @@ int parse_commit_buffer(struct repository *r, struct commit *item, const void *b if (get_oid_hex(bufptr + 5, &parent) < 0) return error("bad tree pointer in commit %s", oid_to_hex(&item->object.oid)); - item->maybe_tree = lookup_tree(r, &parent); + set_commit_tree(item, lookup_tree(r, &parent)); bufptr += tree_entry_len + 1; /* "tree " + "hex sha1" + "\n" */ pptr = &item->parents; @@ -443,7 +454,10 @@ int parse_commit_buffer(struct repository *r, struct commit *item, const void *b return 0; } -int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_commit_graph) +int repo_parse_commit_internal(struct repository *r, + struct commit *item, + int quiet_on_missing, + int use_commit_graph) { enum object_type type; void *buffer; @@ -454,9 +468,9 @@ int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_com return -1; if (item->object.parsed) return 0; - if (use_commit_graph && parse_commit_in_graph(the_repository, item)) + if (use_commit_graph && parse_commit_in_graph(r, item)) return 0; - buffer = read_object_file(&item->object.oid, &type, &size); + buffer = repo_read_object_file(r, &item->object.oid, &type, &size); if (!buffer) return quiet_on_missing ? -1 : error("Could not read %s", @@ -467,18 +481,19 @@ int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_com oid_to_hex(&item->object.oid)); } - ret = parse_commit_buffer(the_repository, item, buffer, size, 0); + ret = parse_commit_buffer(r, item, buffer, size, 0); if (save_commit_buffer && !ret) { - set_commit_buffer(the_repository, item, buffer, size); + set_commit_buffer(r, item, buffer, size); return 0; } free(buffer); return ret; } -int parse_commit_gently(struct commit *item, int quiet_on_missing) +int repo_parse_commit_gently(struct repository *r, + struct commit *item, int quiet_on_missing) { - return parse_commit_internal(item, quiet_on_missing, 1); + return repo_parse_commit_internal(r, item, quiet_on_missing, 1); } void parse_commit_or_die(struct commit *item) @@ -655,11 +670,10 @@ struct commit *pop_commit(struct commit_list **stack) /* count number of children that have not been emitted */ define_commit_slab(indegree_slab, int); -/* record author-date for each commit object */ define_commit_slab(author_date_slab, timestamp_t); -static void record_author_date(struct author_date_slab *author_date, - struct commit *commit) +void record_author_date(struct author_date_slab *author_date, + struct commit *commit) { const char *buffer = get_commit_buffer(commit, NULL); struct ident_split ident; @@ -684,8 +698,8 @@ fail_exit: unuse_commit_buffer(commit, buffer); } -static int compare_commits_by_author_date(const void *a_, const void *b_, - void *cb_data) +int compare_commits_by_author_date(const void *a_, const void *b_, + void *cb_data) { const struct commit *a = a_, *b = b_; struct author_date_slab *author_date = cb_data; @@ -843,6 +857,86 @@ void sort_in_topological_order(struct commit_list **list, enum rev_sort_order so clear_author_date_slab(&author_date); } +struct rev_collect { + struct commit **commit; + int nr; + int alloc; + unsigned int initial : 1; +}; + +static void add_one_commit(struct object_id *oid, struct rev_collect *revs) +{ + struct commit *commit; + + if (is_null_oid(oid)) + return; + + commit = lookup_commit(the_repository, oid); + if (!commit || + (commit->object.flags & TMP_MARK) || + parse_commit(commit)) + return; + + ALLOC_GROW(revs->commit, revs->nr + 1, revs->alloc); + revs->commit[revs->nr++] = commit; + commit->object.flags |= TMP_MARK; +} + +static int collect_one_reflog_ent(struct object_id *ooid, struct object_id *noid, + const char *ident, timestamp_t timestamp, + int tz, const char *message, void *cbdata) +{ + struct rev_collect *revs = cbdata; + + if (revs->initial) { + revs->initial = 0; + add_one_commit(ooid, revs); + } + add_one_commit(noid, revs); + return 0; +} + +struct commit *get_fork_point(const char *refname, struct commit *commit) +{ + struct object_id oid; + struct rev_collect revs; + struct commit_list *bases; + int i; + struct commit *ret = NULL; + + memset(&revs, 0, sizeof(revs)); + revs.initial = 1; + for_each_reflog_ent(refname, collect_one_reflog_ent, &revs); + + if (!revs.nr && !get_oid(refname, &oid)) + add_one_commit(&oid, &revs); + + for (i = 0; i < revs.nr; i++) + revs.commit[i]->object.flags &= ~TMP_MARK; + + bases = get_merge_bases_many(commit, revs.nr, revs.commit); + + /* + * There should be one and only one merge base, when we found + * a common ancestor among reflog entries. + */ + if (!bases || bases->next) + goto cleanup_return; + + /* And the found one must be one of the reflog entries */ + for (i = 0; i < revs.nr; i++) + if (&bases->item->object == &revs.commit[i]->object) + break; /* found */ + if (revs.nr <= i) + goto cleanup_return; + + ret = bases->item; + +cleanup_return: + free_commit_list(bases); + return ret; +} + static const char gpg_sig_header[] = "gpgsig"; static const int gpg_sig_header_len = sizeof(gpg_sig_header) - 1; @@ -1018,7 +1112,33 @@ int check_commit_signature(const struct commit *commit, struct signature_check * return ret; } +void verify_merge_signature(struct commit *commit, int verbosity) +{ + char hex[GIT_MAX_HEXSZ + 1]; + struct signature_check signature_check; + memset(&signature_check, 0, sizeof(signature_check)); + check_commit_signature(commit, &signature_check); + + find_unique_abbrev_r(hex, &commit->object.oid, DEFAULT_ABBREV); + switch (signature_check.result) { + case 'G': + break; + case 'U': + die(_("Commit %s has an untrusted GPG signature, " + "allegedly by %s."), hex, signature_check.signer); + case 'B': + die(_("Commit %s has a bad GPG signature " + "allegedly by %s."), hex, signature_check.signer); + default: /* 'N' */ + die(_("Commit %s does not have a GPG signature."), hex); + } + if (verbosity >= 0 && signature_check.result == 'G') + printf(_("Commit %s has a good GPG signature by %s\n"), + hex, signature_check.signer); + + signature_check_clear(&signature_check); +} void append_merge_tag_headers(struct commit_list *parents, struct commit_extra_header ***tail) |