@@ -559,7 +559,7 @@ static int replace_each_worktree_head_symref(struct worktree **worktrees,
continue;
refs = get_worktree_ref_store(worktrees[i]);
- if (refs_update_symref(refs, "HEAD", newref, logmsg))
+ if (refs_update_symref(refs, "HEAD", newref, logmsg, NULL))
ret = error(_("HEAD of working tree %s is not updated"),
worktrees[i]->path);
}
@@ -1015,7 +1015,7 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
describe_detached_head(_("HEAD is now at"), new_branch_info->commit);
}
} else if (new_branch_info->path) { /* Switch branches. */
- if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", new_branch_info->path, msg.buf) < 0)
+ if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", new_branch_info->path, msg.buf, NULL) < 0)
die(_("unable to update HEAD"));
if (!opts->quiet) {
if (old_branch_info->path && !strcmp(new_branch_info->path, old_branch_info->path)) {
@@ -1479,7 +1479,7 @@ static int switch_unborn_to_new_branch(const struct checkout_opts *opts)
die(_("You are on a branch yet to be born"));
strbuf_addf(&branch_ref, "refs/heads/%s", opts->new_branch);
status = refs_update_symref(get_main_ref_store(the_repository),
- "HEAD", branch_ref.buf, "checkout -b");
+ "HEAD", branch_ref.buf, "checkout -b", NULL);
strbuf_release(&branch_ref);
if (!opts->quiet)
fprintf(stderr, _("Switched to a new branch '%s'\n"),
@@ -661,7 +661,7 @@ static void update_remote_refs(const struct ref *refs,
strbuf_addstr(&head_ref, "HEAD");
if (refs_update_symref(get_main_ref_store(the_repository), head_ref.buf,
remote_head_points_at->peer_ref->name,
- msg) < 0)
+ msg, NULL) < 0)
die(_("unable to update %s"), head_ref.buf);
strbuf_release(&head_ref);
}
@@ -673,7 +673,7 @@ static void update_head(const struct ref *our, const struct ref *remote,
const char *head;
if (our && skip_prefix(our->name, "refs/heads/", &head)) {
/* Local default branch link */
- if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", our->name, NULL) < 0)
+ if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", our->name, NULL, NULL) < 0)
die(_("unable to update HEAD"));
if (!option_bare) {
refs_update_ref(get_main_ref_store(the_repository),
@@ -702,7 +702,7 @@ static void update_head(const struct ref *our, const struct ref *remote,
* Unborn head from remote; same as "our" case above except
* that we have no ref to update.
*/
- if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", unborn, NULL) < 0)
+ if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", unborn, NULL, NULL) < 0)
die(_("unable to update HEAD"));
if (!option_bare)
install_branch_config(0, head, remote_name, unborn);
@@ -980,7 +980,7 @@ static int merge(int argc, const char **argv, const char *prefix)
die(_("a notes merge into %s is already in-progress at %s"),
notes_ref, wt->path);
free_worktrees(worktrees);
- if (refs_update_symref(get_main_ref_store(the_repository), "NOTES_MERGE_REF", notes_ref, NULL))
+ if (refs_update_symref(get_main_ref_store(the_repository), "NOTES_MERGE_REF", notes_ref, NULL, NULL))
die(_("failed to store link to current notes ref (%s)"),
notes_ref);
fprintf(stderr, _("Automatic notes merge failed. Fix conflicts in %s "
@@ -244,7 +244,7 @@ static int add(int argc, const char **argv, const char *prefix)
strbuf_reset(&buf2);
strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
- if (refs_update_symref(get_main_ref_store(the_repository), buf.buf, buf2.buf, "remote add"))
+ if (refs_update_symref(get_main_ref_store(the_repository), buf.buf, buf2.buf, "remote add", NULL))
result = error(_("Could not setup master '%s'"), master);
}
@@ -864,7 +864,7 @@ static int mv(int argc, const char **argv, const char *prefix)
strbuf_reset(&buf3);
strbuf_addf(&buf3, "remote: renamed %s to %s",
item->string, buf.buf);
- if (refs_update_symref(get_main_ref_store(the_repository), buf.buf, buf2.buf, buf3.buf))
+ if (refs_update_symref(get_main_ref_store(the_repository), buf.buf, buf2.buf, buf3.buf, NULL))
die(_("creating '%s' failed"), buf.buf);
display_progress(progress, ++refs_renamed_nr);
}
@@ -1444,7 +1444,7 @@ static int set_head(int argc, const char **argv, const char *prefix)
/* make sure it's valid */
if (!refs_ref_exists(get_main_ref_store(the_repository), buf2.buf))
result |= error(_("Not a valid ref: %s"), buf2.buf);
- else if (refs_update_symref(get_main_ref_store(the_repository), buf.buf, buf2.buf, "remote set-head"))
+ else if (refs_update_symref(get_main_ref_store(the_repository), buf.buf, buf2.buf, "remote set-head", NULL))
result |= error(_("Could not setup %s"), buf.buf);
else if (opt_a)
printf("%s/HEAD set to %s\n", argv[0], head_name);
@@ -88,7 +88,7 @@ int cmd_symbolic_ref(int argc,
if (check_refname_format(argv[1], REFNAME_ALLOW_ONELEVEL) < 0)
die("Refusing to set '%s' to invalid ref '%s'", argv[0], argv[1]);
ret = !!refs_update_symref(get_main_ref_store(the_repository),
- argv[0], argv[1], msg);
+ argv[0], argv[1], msg, NULL);
break;
default:
usage_with_options(git_symbolic_ref_usage, options);
@@ -517,7 +517,7 @@ static int add_worktree(const char *path, const char *refname,
ret = refs_update_ref(wt_refs, NULL, "HEAD", &commit->object.oid,
NULL, 0, UPDATE_REFS_MSG_ON_ERR);
else
- ret = refs_update_symref(wt_refs, "HEAD", symref.buf, NULL);
+ ret = refs_update_symref(wt_refs, "HEAD", symref.buf, NULL, NULL);
if (ret)
goto done;
@@ -2114,7 +2114,8 @@ int peel_iterated_oid(struct repository *r, const struct object_id *base, struct
}
int refs_update_symref(struct ref_store *refs, const char *ref,
- const char *target, const char *logmsg)
+ const char *target, const char *logmsg,
+ struct strbuf *referent)
{
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
@@ -2122,17 +2123,23 @@ int refs_update_symref(struct ref_store *refs, const char *ref,
transaction = ref_store_transaction_begin(refs, &err);
if (!transaction ||
- ref_transaction_update(transaction, ref, NULL, NULL,
+ ref_transaction_update(transaction, ref, NULL, NULL,
target, NULL, REF_NO_DEREF,
logmsg, &err) ||
- ref_transaction_commit(transaction, &err)) {
+ ref_transaction_prepare(transaction, &err)) {
ret = error("%s", err.buf);
+ goto cleanup;
}
+ if (referent)
+ refs_read_symbolic_ref(refs, ref, referent);
+
+ if (ref_transaction_commit(transaction, &err))
+ ret = error("%s", err.buf);
+cleanup:
strbuf_release(&err);
if (transaction)
ref_transaction_free(transaction);
-
return ret;
}
@@ -2948,4 +2955,3 @@ int ref_update_expects_existing_old_ref(struct ref_update *update)
return (update->flags & REF_HAVE_OLD) &&
(!is_null_oid(&update->old_oid) || update->old_target);
}
-
@@ -571,7 +571,8 @@ int refs_copy_existing_ref(struct ref_store *refs, const char *oldref,
const char *newref, const char *logmsg);
int refs_update_symref(struct ref_store *refs, const char *refname,
- const char *target, const char *logmsg);
+ const char *target, const char *logmsg,
+ struct strbuf *referent);
enum action_on_err {
UPDATE_REFS_MSG_ON_ERR,
@@ -76,7 +76,7 @@ static int update_refs(const struct reset_head_opts *opts,
if (!ret)
ret = refs_update_symref(get_main_ref_store(the_repository),
"HEAD", switch_to_branch,
- reflog_head);
+ reflog_head, NULL);
}
if (!ret && run_hook)
run_hooks_l(the_repository, "post-checkout",
@@ -5107,7 +5107,7 @@ static int pick_commits(struct repository *r,
}
msg = reflog_message(opts, "finish", "returning to %s",
head_ref.buf);
- if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", head_ref.buf, msg)) {
+ if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", head_ref.buf, msg, NULL)) {
res = error(_("could not update HEAD to %s"),
head_ref.buf);
goto cleanup_head_ref;
@@ -2275,7 +2275,7 @@ void create_reference_database(enum ref_storage_format ref_storage_format,
die(_("invalid initial branch name: '%s'"),
initial_branch);
- if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", ref, NULL) < 0)
+ if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", ref, NULL, NULL) < 0)
exit(1);
free(ref);
}
@@ -120,7 +120,7 @@ static int cmd_create_symref(struct ref_store *refs, const char **argv)
const char *target = notnull(*argv++, "target");
const char *logmsg = *argv++;
- return refs_update_symref(refs, refname, target, logmsg);
+ return refs_update_symref(refs, refname, target, logmsg, NULL);
}
static struct flag_definition transaction_flags[] = {
When updating a symref it's currently not possible to know for sure what was the previous value that was overwritten. Record the value after the ref has been locked if the caller of refs_update_symref requests it via a new variable in the function call. Signed-off-by: Bence Ferdinandy <bence@ferdinandy.com> --- Notes: v4: new patch v5: - added before_target to reftables backend - added an extra safety check for transaction's existence in refs.c v6: - no change v7: - remove the whole before_target concept from the backends and handle checking it in refs.c instead (thanks Karthik) - rename the before_target to referent which is how the same concept is called in the backends - change commit prefix to be more in line with project standards v8: no change builtin/branch.c | 2 +- builtin/checkout.c | 4 ++-- builtin/clone.c | 6 +++--- builtin/notes.c | 2 +- builtin/remote.c | 6 +++--- builtin/symbolic-ref.c | 2 +- builtin/worktree.c | 2 +- refs.c | 16 +++++++++++----- refs.h | 3 ++- reset.c | 2 +- sequencer.c | 2 +- setup.c | 2 +- t/helper/test-ref-store.c | 2 +- 13 files changed, 29 insertions(+), 22 deletions(-)