зеркало из https://github.com/microsoft/git.git
Merge branch 'hn/reftable-prep-part-2'
Further preliminary change to refs API. * hn/reftable-prep-part-2: Make HEAD a PSEUDOREF rather than PER_WORKTREE. Modify pseudo refs through ref backend storage t1400: use git rev-parse for testing PSEUDOREF existence
This commit is contained in:
Junio C Hamano
Коммит
95c687bf85
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@ -148,12 +148,13 @@ still see a subset of the modifications.
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LOGGING UPDATES
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---------------
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If config parameter "core.logAllRefUpdates" is true and the ref is one under
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"refs/heads/", "refs/remotes/", "refs/notes/", or the symbolic ref HEAD; or
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the file "$GIT_DIR/logs/<ref>" exists then `git update-ref` will append
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a line to the log file "$GIT_DIR/logs/<ref>" (dereferencing all
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symbolic refs before creating the log name) describing the change
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in ref value. Log lines are formatted as:
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If config parameter "core.logAllRefUpdates" is true and the ref is one
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under "refs/heads/", "refs/remotes/", "refs/notes/", or a pseudoref
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like HEAD or ORIG_HEAD; or the file "$GIT_DIR/logs/<ref>" exists then
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`git update-ref` will append a line to the log file
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"$GIT_DIR/logs/<ref>" (dereferencing all symbolic refs before creating
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the log name) describing the change in ref value. Log lines are
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formatted as:
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oldsha1 SP newsha1 SP committer LF
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127
refs.c
127
refs.c
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@ -708,10 +708,9 @@ int dwim_log(const char *str, int len, struct object_id *oid, char **log)
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static int is_per_worktree_ref(const char *refname)
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{
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return !strcmp(refname, "HEAD") ||
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starts_with(refname, "refs/worktree/") ||
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starts_with(refname, "refs/bisect/") ||
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starts_with(refname, "refs/rewritten/");
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return starts_with(refname, "refs/worktree/") ||
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starts_with(refname, "refs/bisect/") ||
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starts_with(refname, "refs/rewritten/");
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}
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static int is_pseudoref_syntax(const char *refname)
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@ -771,102 +770,6 @@ long get_files_ref_lock_timeout_ms(void)
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return timeout_ms;
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}
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static int write_pseudoref(const char *pseudoref, const struct object_id *oid,
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const struct object_id *old_oid, struct strbuf *err)
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{
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const char *filename;
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int fd;
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struct lock_file lock = LOCK_INIT;
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struct strbuf buf = STRBUF_INIT;
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int ret = -1;
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if (!oid)
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return 0;
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strbuf_addf(&buf, "%s\n", oid_to_hex(oid));
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filename = git_path("%s", pseudoref);
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fd = hold_lock_file_for_update_timeout(&lock, filename, 0,
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get_files_ref_lock_timeout_ms());
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if (fd < 0) {
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strbuf_addf(err, _("could not open '%s' for writing: %s"),
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filename, strerror(errno));
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goto done;
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}
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if (old_oid) {
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struct object_id actual_old_oid;
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if (read_ref(pseudoref, &actual_old_oid)) {
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if (!is_null_oid(old_oid)) {
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strbuf_addf(err, _("could not read ref '%s'"),
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pseudoref);
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rollback_lock_file(&lock);
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goto done;
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}
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} else if (is_null_oid(old_oid)) {
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strbuf_addf(err, _("ref '%s' already exists"),
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pseudoref);
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rollback_lock_file(&lock);
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goto done;
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} else if (!oideq(&actual_old_oid, old_oid)) {
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strbuf_addf(err, _("unexpected object ID when writing '%s'"),
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pseudoref);
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rollback_lock_file(&lock);
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goto done;
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}
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}
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if (write_in_full(fd, buf.buf, buf.len) < 0) {
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strbuf_addf(err, _("could not write to '%s'"), filename);
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rollback_lock_file(&lock);
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goto done;
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}
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commit_lock_file(&lock);
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ret = 0;
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done:
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strbuf_release(&buf);
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return ret;
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}
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static int delete_pseudoref(const char *pseudoref, const struct object_id *old_oid)
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{
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const char *filename;
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filename = git_path("%s", pseudoref);
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if (old_oid && !is_null_oid(old_oid)) {
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struct lock_file lock = LOCK_INIT;
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int fd;
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struct object_id actual_old_oid;
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fd = hold_lock_file_for_update_timeout(
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&lock, filename, 0,
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get_files_ref_lock_timeout_ms());
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if (fd < 0) {
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error_errno(_("could not open '%s' for writing"),
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filename);
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return -1;
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}
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if (read_ref(pseudoref, &actual_old_oid))
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die(_("could not read ref '%s'"), pseudoref);
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if (!oideq(&actual_old_oid, old_oid)) {
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error(_("unexpected object ID when deleting '%s'"),
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pseudoref);
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rollback_lock_file(&lock);
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return -1;
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}
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unlink(filename);
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rollback_lock_file(&lock);
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} else {
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unlink(filename);
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}
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return 0;
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}
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int refs_delete_ref(struct ref_store *refs, const char *msg,
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const char *refname,
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const struct object_id *old_oid,
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@ -875,11 +778,6 @@ int refs_delete_ref(struct ref_store *refs, const char *msg,
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struct ref_transaction *transaction;
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struct strbuf err = STRBUF_INIT;
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if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
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assert(refs == get_main_ref_store(the_repository));
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return delete_pseudoref(refname, old_oid);
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}
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transaction = ref_store_transaction_begin(refs, &err);
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if (!transaction ||
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ref_transaction_delete(transaction, refname, old_oid,
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@ -1210,18 +1108,13 @@ int refs_update_ref(struct ref_store *refs, const char *msg,
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struct strbuf err = STRBUF_INIT;
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int ret = 0;
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if (ref_type(refname) == REF_TYPE_PSEUDOREF) {
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assert(refs == get_main_ref_store(the_repository));
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ret = write_pseudoref(refname, new_oid, old_oid, &err);
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} else {
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t = ref_store_transaction_begin(refs, &err);
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if (!t ||
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ref_transaction_update(t, refname, new_oid, old_oid,
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flags, msg, &err) ||
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ref_transaction_commit(t, &err)) {
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ret = 1;
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ref_transaction_free(t);
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}
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t = ref_store_transaction_begin(refs, &err);
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if (!t ||
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ref_transaction_update(t, refname, new_oid, old_oid, flags, msg,
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&err) ||
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ref_transaction_commit(t, &err)) {
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ret = 1;
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ref_transaction_free(t);
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}
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if (ret) {
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const char *str = _("update_ref failed for ref '%s': %s");
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@ -160,10 +160,10 @@ test_expect_success 'core.logAllRefUpdates=always creates reflog by default' '
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git reflog exists $outside
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'
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test_expect_success 'core.logAllRefUpdates=always creates no reflog for ORIG_HEAD' '
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test_expect_success 'core.logAllRefUpdates=always creates reflog for ORIG_HEAD' '
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test_config core.logAllRefUpdates always &&
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git update-ref ORIG_HEAD $A &&
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test_must_fail git reflog exists ORIG_HEAD
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git reflog exists ORIG_HEAD
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'
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test_expect_success '--no-create-reflog overrides core.logAllRefUpdates=always' '
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@ -475,57 +475,57 @@ test_expect_success 'git cat-file blob master@{2005-05-26 23:42}:F (expect OTHER
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test_expect_success 'given old value for missing pseudoref, do not create' '
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test_must_fail git update-ref PSEUDOREF $A $B 2>err &&
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test_path_is_missing .git/PSEUDOREF &&
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test_i18ngrep "could not read ref" err
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test_must_fail git rev-parse PSEUDOREF &&
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test_i18ngrep "unable to resolve reference" err
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'
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test_expect_success 'create pseudoref' '
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git update-ref PSEUDOREF $A &&
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test $A = $(cat .git/PSEUDOREF)
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test $A = $(git rev-parse PSEUDOREF)
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'
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test_expect_success 'overwrite pseudoref with no old value given' '
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git update-ref PSEUDOREF $B &&
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test $B = $(cat .git/PSEUDOREF)
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test $B = $(git rev-parse PSEUDOREF)
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'
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test_expect_success 'overwrite pseudoref with correct old value' '
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git update-ref PSEUDOREF $C $B &&
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test $C = $(cat .git/PSEUDOREF)
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test $C = $(git rev-parse PSEUDOREF)
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'
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test_expect_success 'do not overwrite pseudoref with wrong old value' '
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test_must_fail git update-ref PSEUDOREF $D $E 2>err &&
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test $C = $(cat .git/PSEUDOREF) &&
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test_i18ngrep "unexpected object ID" err
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test $C = $(git rev-parse PSEUDOREF) &&
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test_i18ngrep "cannot lock ref.*expected" err
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'
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test_expect_success 'delete pseudoref' '
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git update-ref -d PSEUDOREF &&
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test_path_is_missing .git/PSEUDOREF
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test_must_fail git rev-parse PSEUDOREF
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'
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test_expect_success 'do not delete pseudoref with wrong old value' '
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git update-ref PSEUDOREF $A &&
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test_must_fail git update-ref -d PSEUDOREF $B 2>err &&
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test $A = $(cat .git/PSEUDOREF) &&
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test_i18ngrep "unexpected object ID" err
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test $A = $(git rev-parse PSEUDOREF) &&
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test_i18ngrep "cannot lock ref.*expected" err
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'
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test_expect_success 'delete pseudoref with correct old value' '
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git update-ref -d PSEUDOREF $A &&
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test_path_is_missing .git/PSEUDOREF
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test_must_fail git rev-parse PSEUDOREF
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'
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test_expect_success 'create pseudoref with old OID zero' '
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git update-ref PSEUDOREF $A $Z &&
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test $A = $(cat .git/PSEUDOREF)
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test $A = $(git rev-parse PSEUDOREF)
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'
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test_expect_success 'do not overwrite pseudoref with old OID zero' '
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test_when_finished git update-ref -d PSEUDOREF &&
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test_must_fail git update-ref PSEUDOREF $B $Z 2>err &&
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test $A = $(cat .git/PSEUDOREF) &&
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test $A = $(git rev-parse PSEUDOREF) &&
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test_i18ngrep "already exists" err
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'
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@ -31,7 +31,10 @@ test_expect_success 'create_symref(FOO, refs/heads/master)' '
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test_expect_success 'delete_refs(FOO, refs/tags/new-tag)' '
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git rev-parse FOO -- &&
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git rev-parse refs/tags/new-tag -- &&
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$RUN delete-refs 0 nothing FOO refs/tags/new-tag &&
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m=$(git rev-parse master) &&
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REF_NO_DEREF=1 &&
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$RUN delete-refs $REF_NO_DEREF nothing FOO refs/tags/new-tag &&
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test_must_fail git rev-parse --symbolic-full-name FOO &&
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test_must_fail git rev-parse FOO -- &&
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test_must_fail git rev-parse refs/tags/new-tag --
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'
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