diff options
Diffstat (limited to 'commit.c')
| -rw-r--r-- | commit.c | 224 |
1 files changed, 154 insertions, 70 deletions
@@ -19,6 +19,8 @@ #include "advice.h" #include "refs.h" #include "commit-reach.h" +#include "run-command.h" +#include "shallow.h" static struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **); @@ -35,7 +37,7 @@ struct commit *lookup_commit_reference_gently(struct repository *r, if (!obj) return NULL; - return object_as_type(r, obj, OBJ_COMMIT, quiet); + return object_as_type(obj, OBJ_COMMIT, quiet); } struct commit *lookup_commit_reference(struct repository *r, const struct object_id *oid) @@ -57,11 +59,10 @@ struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref struct commit *lookup_commit(struct repository *r, const struct object_id *oid) { - struct object *obj = lookup_object(r, oid->hash); + struct object *obj = lookup_object(r, oid); if (!obj) - return create_object(r, oid->hash, - alloc_commit_node(r)); - return object_as_type(r, obj, OBJ_COMMIT, 0); + return create_object(r, oid, alloc_commit_node(r)); + return object_as_type(obj, OBJ_COMMIT, 0); } struct commit *lookup_commit_reference_by_name(const char *name) @@ -110,7 +111,7 @@ static const unsigned char *commit_graft_sha1_access(size_t index, void *table) return commit_graft_table[index]->oid.hash; } -static int commit_graft_pos(struct repository *r, const unsigned char *sha1) +int commit_graft_pos(struct repository *r, const unsigned char *sha1) { return sha1_pos(sha1, r->parsed_objects->grafts, r->parsed_objects->grafts_nr, @@ -245,19 +246,6 @@ int for_each_commit_graft(each_commit_graft_fn fn, void *cb_data) return ret; } -int unregister_shallow(const struct object_id *oid) -{ - int pos = commit_graft_pos(the_repository, oid->hash); - if (pos < 0) - return -1; - if (pos + 1 < the_repository->parsed_objects->grafts_nr) - MOVE_ARRAY(the_repository->parsed_objects->grafts + pos, - the_repository->parsed_objects->grafts + pos + 1, - the_repository->parsed_objects->grafts_nr - pos - 1); - the_repository->parsed_objects->grafts_nr--; - return 0; -} - struct commit_buffer { void *buffer; unsigned long size; @@ -299,13 +287,15 @@ 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)); @@ -318,47 +308,55 @@ 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_position(commit) != 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) { - return &get_commit_tree(commit)->object.oid; + struct tree *tree = get_commit_tree(commit); + return tree ? &tree->object.oid : NULL; } -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); + free_commit_buffer(pool, c); c->index = 0; - free_commit_buffer(c); free_commit_list(c->parents); - /* TODO: what about commit->util? */ c->object.parsed = 0; } @@ -392,10 +390,22 @@ int parse_commit_buffer(struct repository *r, struct commit *item, const void *b struct commit_graft *graft; const int tree_entry_len = the_hash_algo->hexsz + 5; const int parent_entry_len = the_hash_algo->hexsz + 7; + struct tree *tree; if (item->object.parsed) return 0; - item->object.parsed = 1; + + if (item->parents) { + /* + * Presumably this is leftover from an earlier failed parse; + * clear it out in preparation for us re-parsing (we'll hit the + * same error, but that's good, since it lets our caller know + * the result cannot be trusted. + */ + free_commit_list(item->parents); + item->parents = NULL; + } + tail += size; if (tail <= bufptr + tree_entry_len + 1 || memcmp(bufptr, "tree ", 5) || bufptr[tree_entry_len] != '\n') @@ -403,11 +413,18 @@ 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); + tree = lookup_tree(r, &parent); + if (!tree) + return error("bad tree pointer %s in commit %s", + oid_to_hex(&parent), + oid_to_hex(&item->object.oid)); + set_commit_tree(item, tree); bufptr += tree_entry_len + 1; /* "tree " + "hex sha1" + "\n" */ pptr = &item->parents; graft = lookup_commit_graft(r, &item->object.oid); + if (graft) + r->parsed_objects->substituted_parent = 1; while (bufptr + parent_entry_len < tail && !memcmp(bufptr, "parent ", 7)) { struct commit *new_parent; @@ -423,8 +440,11 @@ int parse_commit_buffer(struct repository *r, struct commit *item, const void *b if (graft && (graft->nr_parent < 0 || grafts_replace_parents)) continue; new_parent = lookup_commit(r, &parent); - if (new_parent) - pptr = &commit_list_insert(new_parent, pptr)->next; + if (!new_parent) + return error("bad parent %s in commit %s", + oid_to_hex(&parent), + oid_to_hex(&item->object.oid)); + pptr = &commit_list_insert(new_parent, pptr)->next; } if (graft) { int i; @@ -433,19 +453,25 @@ int parse_commit_buffer(struct repository *r, struct commit *item, const void *b new_parent = lookup_commit(r, &graft->parent[i]); if (!new_parent) - continue; + return error("bad graft parent %s in commit %s", + oid_to_hex(&graft->parent[i]), + oid_to_hex(&item->object.oid)); pptr = &commit_list_insert(new_parent, pptr)->next; } } item->date = parse_commit_date(bufptr, tail); if (check_graph) - load_commit_graph_info(the_repository, item); + load_commit_graph_info(r, item); + item->object.parsed = 1; 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; @@ -456,9 +482,9 @@ 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", @@ -469,18 +495,19 @@ 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) @@ -704,11 +731,13 @@ int compare_commits_by_author_date(const void *a_, const void *b_, int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, void *unused) { const struct commit *a = a_, *b = b_; + const uint32_t generation_a = commit_graph_generation(a), + generation_b = commit_graph_generation(b); /* newer commits first */ - if (a->generation < b->generation) + if (generation_a < generation_b) return 1; - else if (a->generation > b->generation) + else if (generation_a > generation_b) return -1; /* use date as a heuristic when generations are equal */ @@ -890,12 +919,22 @@ struct commit *get_fork_point(const char *refname, struct commit *commit) struct commit_list *bases; int i; struct commit *ret = NULL; + char *full_refname; + + switch (dwim_ref(refname, strlen(refname), &oid, &full_refname, 0)) { + case 0: + die("No such ref: '%s'", refname); + case 1: + break; /* good */ + default: + die("Ambiguous refname: '%s'", refname); + } memset(&revs, 0, sizeof(revs)); revs.initial = 1; - for_each_reflog_ent(refname, collect_one_reflog_ent, &revs); + for_each_reflog_ent(full_refname, collect_one_reflog_ent, &revs); - if (!revs.nr && !get_oid(refname, &oid)) + if (!revs.nr) add_one_commit(&oid, &revs); for (i = 0; i < revs.nr; i++) @@ -921,17 +960,26 @@ struct commit *get_fork_point(const char *refname, struct commit *commit) cleanup_return: free_commit_list(bases); + free(full_refname); return ret; } -static const char gpg_sig_header[] = "gpgsig"; -static const int gpg_sig_header_len = sizeof(gpg_sig_header) - 1; +/* + * Indexed by hash algorithm identifier. + */ +static const char *gpg_sig_headers[] = { + NULL, + "gpgsig", + "gpgsig-sha256", +}; static int do_sign_commit(struct strbuf *buf, const char *keyid) { struct strbuf sig = STRBUF_INIT; int inspos, copypos; const char *eoh; + const char *gpg_sig_header = gpg_sig_headers[hash_algo_by_ptr(the_hash_algo)]; + int gpg_sig_header_len = strlen(gpg_sig_header); /* find the end of the header */ eoh = strstr(buf->buf, "\n\n"); @@ -956,7 +1004,7 @@ static int do_sign_commit(struct strbuf *buf, const char *keyid) strbuf_insert(buf, inspos, gpg_sig_header, gpg_sig_header_len); inspos += gpg_sig_header_len; } - strbuf_insert(buf, inspos++, " ", 1); + strbuf_insertstr(buf, inspos++, " "); strbuf_insert(buf, inspos, bol, len); inspos += len; copypos += len; @@ -973,6 +1021,8 @@ int parse_signed_commit(const struct commit *commit, const char *buffer = get_commit_buffer(commit, &size); int in_signature, saw_signature = -1; const char *line, *tail; + const char *gpg_sig_header = gpg_sig_headers[hash_algo_by_ptr(the_hash_algo)]; + int gpg_sig_header_len = strlen(gpg_sig_header); line = buffer; tail = buffer + size; @@ -1019,11 +1069,17 @@ int remove_signature(struct strbuf *buf) if (in_signature && line[0] == ' ') sig_end = next; - else if (starts_with(line, gpg_sig_header) && - line[gpg_sig_header_len] == ' ') { - sig_start = line; - sig_end = next; - in_signature = 1; + else if (starts_with(line, "gpgsig")) { + int i; + for (i = 1; i < GIT_HASH_NALGOS; i++) { + const char *p; + if (skip_prefix(line, gpg_sig_headers[i], &p) && + *p == ' ') { + sig_start = line; + sig_end = next; + in_signature = 1; + } + } } else { if (*line == '\n') /* dump the whole remainder of the buffer */ @@ -1099,21 +1155,23 @@ int check_commit_signature(const struct commit *commit, struct signature_check * return ret; } -void verify_merge_signature(struct commit *commit, int verbosity) +void verify_merge_signature(struct commit *commit, int verbosity, + int check_trust) { char hex[GIT_MAX_HEXSZ + 1]; struct signature_check signature_check; + int ret; memset(&signature_check, 0, sizeof(signature_check)); - check_commit_signature(commit, &signature_check); + ret = check_commit_signature(commit, &signature_check); find_unique_abbrev_r(hex, &commit->object.oid, DEFAULT_ABBREV); switch (signature_check.result) { case 'G': + if (ret || (check_trust && signature_check.trust_level < TRUST_MARGINAL)) + die(_("Commit %s has an untrusted GPG signature, " + "allegedly by %s."), hex, signature_check.signer); 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); @@ -1258,8 +1316,8 @@ int commit_tree(const char *msg, size_t msg_len, const struct object_id *tree, int result; append_merge_tag_headers(parents, &tail); - result = commit_tree_extended(msg, msg_len, tree, parents, ret, - author, sign_commit, extra); + result = commit_tree_extended(msg, msg_len, tree, parents, ret, author, + NULL, sign_commit, extra); free_commit_extra_headers(extra); return result; } @@ -1382,7 +1440,8 @@ N_("Warning: commit message did not conform to UTF-8.\n" int commit_tree_extended(const char *msg, size_t msg_len, const struct object_id *tree, struct commit_list *parents, struct object_id *ret, - const char *author, const char *sign_commit, + const char *author, const char *committer, + const char *sign_commit, struct commit_extra_header *extra) { int result; @@ -1415,7 +1474,9 @@ int commit_tree_extended(const char *msg, size_t msg_len, if (!author) author = git_author_info(IDENT_STRICT); strbuf_addf(&buffer, "author %s\n", author); - strbuf_addf(&buffer, "committer %s\n", git_committer_info(IDENT_STRICT)); + if (!committer) + committer = git_committer_info(IDENT_STRICT); + strbuf_addf(&buffer, "committer %s\n", committer); if (!encoding_is_utf8) strbuf_addf(&buffer, "encoding %s\n", git_commit_encoding); @@ -1525,7 +1586,7 @@ const char *find_commit_header(const char *msg, const char *key, size_t *out_len /* * Inspect the given string and determine the true "end" of the log message, in - * order to find where to put a new Signed-off-by: line. Ignored are + * order to find where to put a new Signed-off-by trailer. Ignored are * trailing comment lines and blank lines. To support "git commit -s * --amend" on an existing commit, we also ignore "Conflicts:". To * support "git commit -v", we truncate at cut lines. @@ -1568,3 +1629,26 @@ size_t ignore_non_trailer(const char *buf, size_t len) } return boc ? len - boc : len - cutoff; } + +int run_commit_hook(int editor_is_used, const char *index_file, + const char *name, ...) +{ + struct strvec hook_env = STRVEC_INIT; + va_list args; + int ret; + + strvec_pushf(&hook_env, "GIT_INDEX_FILE=%s", index_file); + + /* + * Let the hook know that no editor will be launched. + */ + if (!editor_is_used) + strvec_push(&hook_env, "GIT_EDITOR=:"); + + va_start(args, name); + ret = run_hook_ve(hook_env.v, name, args); + va_end(args); + strvec_clear(&hook_env); + + return ret; +} |