Instead, verify the reference's old value if and only if old_sha1 is
non-NULL.
ref_transaction_delete() will get the same treatment in a moment.
Signed-off-by: Michael Haggerty <mhagger@xxxxxxxxxxxx>
Reviewed-by: Stefan Beller <sbeller@xxxxxxxxxx>
---
branch.c | 5 +++--
builtin/commit.c | 2 +-
builtin/fetch.c | 6 ++++--
builtin/receive-pack.c | 2 +-
builtin/replace.c | 2 +-
builtin/tag.c | 2 +-
builtin/update-ref.c | 7 ++++---
fast-import.c | 6 +++---
refs.c | 18 ++++++++----------
refs.h | 6 +++---
sequencer.c | 2 +-
walker.c | 2 +-
12 files changed, 31 insertions(+), 29 deletions(-)
diff --git a/branch.c b/branch.c
index 4bab55a..b002435 100644
--- a/branch.c
+++ b/branch.c
@@ -284,8 +284,9 @@ void create_branch(const char *head,
transaction = ref_transaction_begin(&err);
if (!transaction ||
- ref_transaction_update(transaction, ref.buf, sha1,
- null_sha1, 0, !forcing, msg, &err) ||
+ ref_transaction_update(transaction, ref.buf,
+ sha1, forcing ? NULL : null_sha1,
+ 0, msg, &err) ||
ref_transaction_commit(transaction, &err))
die("%s", err.buf);
ref_transaction_free(transaction);
diff --git a/builtin/commit.c b/builtin/commit.c
index 7f46713..8afb0ff 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1767,7 +1767,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
ref_transaction_update(transaction, "HEAD", sha1,
current_head
? current_head->object.sha1 : NULL,
- 0, !!current_head, sb.buf, &err) ||
+ 0, sb.buf, &err) ||
ref_transaction_commit(transaction, &err)) {
rollback_index_files();
die("%s", err.buf);
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 7b84d35..719bf4f 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -416,8 +416,10 @@ static int s_update_ref(const char *action,
transaction = ref_transaction_begin(&err);
if (!transaction ||
- ref_transaction_update(transaction, ref->name, ref->new_sha1,
- ref->old_sha1, 0, check_old, msg, &err))
+ ref_transaction_update(transaction, ref->name,
+ ref->new_sha1,
+ check_old ? ref->old_sha1 : NULL,
+ 0, msg, &err))
goto fail;
ret = ref_transaction_commit(transaction, &err);
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index e0ce78e..0be50e9 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -971,7 +971,7 @@ static const char *update(struct command *cmd, struct shallow_info *si)
if (ref_transaction_update(transaction,
namespaced_name,
new_sha1, old_sha1,
- 0, 1, "push",
+ 0, "push",
&err)) {
rp_error("%s", err.buf);
strbuf_release(&err);
diff --git a/builtin/replace.c b/builtin/replace.c
index 85d39b5..54bf01a 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -172,7 +172,7 @@ static int replace_object_sha1(const char *object_ref,
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, ref, repl, prev,
- 0, 1, NULL, &err) ||
+ 0, NULL, &err) ||
ref_transaction_commit(transaction, &err))
die("%s", err.buf);
diff --git a/builtin/tag.c b/builtin/tag.c
index 6dc85a9..4194b9a 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -733,7 +733,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, ref.buf, object, prev,
- 0, 1, NULL, &err) ||
+ 0, NULL, &err) ||
ref_transaction_commit(transaction, &err))
die("%s", err.buf);
ref_transaction_free(transaction);
diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index 9a1659e..1ad6ce1 100644
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -198,8 +198,9 @@ static const char *parse_cmd_update(struct ref_transaction *transaction,
if (*next != line_termination)
die("update %s: extra input: %s", refname, next);
- if (ref_transaction_update(transaction, refname, new_sha1, old_sha1,
- update_flags, have_old, msg, &err))
+ if (ref_transaction_update(transaction, refname,
+ new_sha1, have_old ? old_sha1 : NULL,
+ update_flags, msg, &err))
die("%s", err.buf);
update_flags = 0;
@@ -297,7 +298,7 @@ static const char *parse_cmd_verify(struct ref_transaction *transaction,
die("verify %s: extra input: %s", refname, next);
if (ref_transaction_update(transaction, refname, new_sha1, old_sha1,
- update_flags, 1, msg, &err))
+ update_flags, msg, &err))
die("%s", err.buf);
update_flags = 0;
diff --git a/fast-import.c b/fast-import.c
index d0bd285..1e72bfb 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -1716,7 +1716,7 @@ static int update_branch(struct branch *b)
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, b->name, b->sha1, old_sha1,
- 0, 1, msg, &err) ||
+ 0, msg, &err) ||
ref_transaction_commit(transaction, &err)) {
ref_transaction_free(transaction);
error("%s", err.buf);
@@ -1756,8 +1756,8 @@ static void dump_tags(void)
strbuf_reset(&ref_name);
strbuf_addf(&ref_name, "refs/tags/%s", t->name);
- if (ref_transaction_update(transaction, ref_name.buf, t->sha1,
- NULL, 0, 0, msg, &err)) {
+ if (ref_transaction_update(transaction, ref_name.buf,
+ t->sha1, NULL, 0, msg, &err)) {
failure |= error("%s", err.buf);
goto cleanup;
}
diff --git a/refs.c b/refs.c
index e3a2ba8..e88817c 100644
--- a/refs.c
+++ b/refs.c
@@ -3654,7 +3654,7 @@ int ref_transaction_update(struct ref_transaction *transaction,
const char *refname,
const unsigned char *new_sha1,
const unsigned char *old_sha1,
- unsigned int flags, int have_old, const char *msg,
+ unsigned int flags, const char *msg,
struct strbuf *err)
{
struct ref_update *update;
@@ -3664,9 +3664,6 @@ int ref_transaction_update(struct ref_transaction *transaction,
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: update called for transaction that is not open");
- if (have_old && !old_sha1)
- die("BUG: have_old is true but old_sha1 is NULL");
-
if (!is_null_sha1(new_sha1) &&
check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
strbuf_addf(err, "refusing to update ref with bad name %s",
@@ -3676,7 +3673,7 @@ int ref_transaction_update(struct ref_transaction *transaction,
update = add_update(transaction, refname);
hashcpy(update->new_sha1, new_sha1);
- if (have_old) {
+ if (old_sha1) {
hashcpy(update->old_sha1, old_sha1);
flags |= REF_HAVE_OLD;
}
@@ -3693,7 +3690,7 @@ int ref_transaction_create(struct ref_transaction *transaction,
struct strbuf *err)
{
return ref_transaction_update(transaction, refname, new_sha1,
- null_sha1, flags, 1, msg, err);
+ null_sha1, flags, msg, err);
}
int ref_transaction_delete(struct ref_transaction *transaction,
@@ -3702,8 +3699,9 @@ int ref_transaction_delete(struct ref_transaction *transaction,
unsigned int flags, int have_old, const char *msg,
struct strbuf *err)
{
- return ref_transaction_update(transaction, refname, null_sha1,
- old_sha1, flags, have_old, msg, err);
+ return ref_transaction_update(transaction, refname,
+ null_sha1, have_old ? old_sha1 : NULL,
+ flags, msg, err);
}
int update_ref(const char *action, const char *refname,
@@ -3715,8 +3713,8 @@ int update_ref(const char *action, const char *refname,
t = ref_transaction_begin(&err);
if (!t ||
- ref_transaction_update(t, refname, sha1, oldval, flags,
- !!oldval, action, &err) ||
+ ref_transaction_update(t, refname, sha1, oldval,
+ flags, action, &err) ||
ref_transaction_commit(t, &err)) {
const char *str = "update_ref failed for ref '%s': %s";
diff --git a/refs.h b/refs.h
index 92b8597..dced4c9 100644
--- a/refs.h
+++ b/refs.h
@@ -265,8 +265,8 @@ struct ref_transaction *ref_transaction_begin(struct strbuf *err);
/*
* Add a reference update to transaction. new_sha1 is the value that
* the reference should have after the update, or null_sha1 if it should
- * be deleted. If have_old is true, then old_sha1 holds the value
- * that the reference should have had before the update, or zeros if
+ * be deleted. If old_sha1 is non-NULL, then it is the value
+ * that the reference should have had before the update, or null_sha1 if
* it must not have existed beforehand.
* Function returns 0 on success and non-zero on failure. A failure to update
* means that the transaction as a whole has failed and will need to be
@@ -276,7 +276,7 @@ int ref_transaction_update(struct ref_transaction *transaction,
const char *refname,
const unsigned char *new_sha1,
const unsigned char *old_sha1,
- unsigned int flags, int have_old, const char *msg,
+ unsigned int flags, const char *msg,
struct strbuf *err);
/*
diff --git a/sequencer.c b/sequencer.c
index 77a1266..32aa05e 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -252,7 +252,7 @@ static int fast_forward_to(const unsigned char *to, const unsigned char *from,
if (!transaction ||
ref_transaction_update(transaction, "HEAD",
to, unborn ? null_sha1 : from,
- 0, 1, sb.buf, &err) ||
+ 0, sb.buf, &err) ||
ref_transaction_commit(transaction, &err)) {
ref_transaction_free(transaction);
error("%s", err.buf);
diff --git a/walker.c b/walker.c
index 483da4e..58ffeca 100644
--- a/walker.c
+++ b/walker.c
@@ -299,7 +299,7 @@ int walker_fetch(struct walker *walker, int targets, char **target,
strbuf_reset(&refname);
strbuf_addf(&refname, "refs/%s", write_ref[i]);
if (ref_transaction_update(transaction, refname.buf,
- &sha1[20 * i], NULL, 0, 0,
+ &sha1[20 * i], NULL, 0,
msg ? msg : "fetch (unknown)",
&err)) {
error("%s", err.buf);
--
2.1.4
--
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