Change ref_transaction_delete() to do basic error checking and return
non-zero of error. Update all callers to check the return for
ref_transaction_delete(). There are currently no conditions in _delete that
will return error but there will be in the future.
Signed-off-by: Ronnie Sahlberg <sahlberg@xxxxxxxxxx>
---
builtin/update-ref.c | 5 +++--
refs.c | 15 ++++++++++-----
refs.h | 11 +++++++----
3 files changed, 20 insertions(+), 11 deletions(-)
diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index 0924502..2a51df1 100644
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -257,8 +257,9 @@ static const char *parse_cmd_delete(struct strbuf *input, const char *next)
if (*next != line_termination)
die("delete %s: extra input: %s", refname, next);
- ref_transaction_delete(transaction, refname, old_sha1,
- update_flags, have_old);
+ if (ref_transaction_delete(transaction, refname, old_sha1,
+ update_flags, have_old))
+ die("failed transaction delete for %s", refname);
update_flags = 0;
free(refname);
diff --git a/refs.c b/refs.c
index f38d3d6..6e5e940 100644
--- a/refs.c
+++ b/refs.c
@@ -3392,19 +3392,24 @@ int ref_transaction_create(struct ref_transaction *transaction,
return 0;
}
-void ref_transaction_delete(struct ref_transaction *transaction,
- const char *refname,
- const unsigned char *old_sha1,
- int flags, int have_old)
+int ref_transaction_delete(struct ref_transaction *transaction,
+ const char *refname,
+ const unsigned char *old_sha1,
+ int flags, int have_old)
{
- struct ref_update *update = add_update(transaction, refname);
+ struct ref_update *update;
+ if (have_old && !old_sha1)
+ die("BUG: have_old is true but old_sha1 is NULL");
+
+ update = add_update(transaction, refname);
update->flags = flags;
update->have_old = have_old;
if (have_old) {
assert(!is_null_sha1(old_sha1));
hashcpy(update->old_sha1, old_sha1);
}
+ return 0;
}
int update_ref(const char *action, const char *refname,
diff --git a/refs.h b/refs.h
index e3bdd57..cba2f3d 100644
--- a/refs.h
+++ b/refs.h
@@ -270,11 +270,14 @@ int ref_transaction_create(struct ref_transaction *transaction,
* Add a reference deletion to transaction. If have_old is true, then
* old_sha1 holds the value that the reference should have had before
* the update (which must not be the null SHA-1).
+ * Function returns 0 on success and non-zero on failure. A failure to delete
+ * means that the transaction as a whole has failed and will need to be
+ * rolled back.
*/
-void ref_transaction_delete(struct ref_transaction *transaction,
- const char *refname,
- const unsigned char *old_sha1,
- int flags, int have_old);
+int ref_transaction_delete(struct ref_transaction *transaction,
+ const char *refname,
+ const unsigned char *old_sha1,
+ int flags, int have_old);
/*
* Commit all of the changes that have been queued in transaction, as
--
2.0.0.rc3.477.g0f8edf7
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