Re: [PATCH v8 10/44] refs.c: change ref_transaction_update() to do error checking and return status
Ronnie Sahlberg wrote: Update ref_transaction_update() do some basic error checking and return non-zero on error. Update all callers to check ref_transaction_update() for error. There are currently no conditions in _update that will return error but there will be in the future. Probably worth passing a 'struct strbuf *err' argument. Then callers can do die(%s, err.buf); and the error message can say which ref and whether we were trying to create a ref, or delete one, or whatever. --- a/builtin/update-ref.c +++ b/builtin/update-ref.c @@ -197,8 +197,9 @@ static const char *parse_cmd_update(struct strbuf *input, const char *next) if (*next != line_termination) die(update %s: extra input: %s, refname, next); - ref_transaction_update(transaction, refname, new_sha1, old_sha1, -update_flags, have_old); + if (ref_transaction_update(transaction, refname, new_sha1, old_sha1, +update_flags, have_old)) + die(update %s: failed, refname); This could say die(update %s: %s, refname, err.buf); to give context about which command it was trying to execute. [...] @@ -286,8 +287,9 @@ static const char *parse_cmd_verify(struct strbuf *input, const char *next) if (*next != line_termination) die(verify %s: extra input: %s, refname, next); - ref_transaction_update(transaction, refname, new_sha1, old_sha1, -update_flags, have_old); + if (ref_transaction_update(transaction, refname, new_sha1, old_sha1, +update_flags, have_old)) + die(failed transaction update for %s, refname); And this could say die(verify %s: %s, refname, err.buf); [...] --- a/refs.h +++ b/refs.h @@ -242,12 +242,15 @@ void ref_transaction_rollback(struct ref_transaction *transaction); * 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 * 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 + * rolled back. + */ Thanks for this documentation. -- To unsubscribe from this list: send the line unsubscribe git in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v8 10/44] refs.c: change ref_transaction_update() to do error checking and return status
On Thu, May 15, 2014 at 12:34 PM, Jonathan Nieder jrnie...@gmail.com wrote: Ronnie Sahlberg wrote: Update ref_transaction_update() do some basic error checking and return non-zero on error. Update all callers to check ref_transaction_update() for error. There are currently no conditions in _update that will return error but there will be in the future. Probably worth passing a 'struct strbuf *err' argument. Then callers can do die(%s, err.buf); Done. and the error message can say which ref and whether we were trying to create a ref, or delete one, or whatever. --- a/builtin/update-ref.c +++ b/builtin/update-ref.c @@ -197,8 +197,9 @@ static const char *parse_cmd_update(struct strbuf *input, const char *next) if (*next != line_termination) die(update %s: extra input: %s, refname, next); - ref_transaction_update(transaction, refname, new_sha1, old_sha1, -update_flags, have_old); + if (ref_transaction_update(transaction, refname, new_sha1, old_sha1, +update_flags, have_old)) + die(update %s: failed, refname); This could say die(update %s: %s, refname, err.buf); Done. to give context about which command it was trying to execute. [...] @@ -286,8 +287,9 @@ static const char *parse_cmd_verify(struct strbuf *input, const char *next) if (*next != line_termination) die(verify %s: extra input: %s, refname, next); - ref_transaction_update(transaction, refname, new_sha1, old_sha1, -update_flags, have_old); + if (ref_transaction_update(transaction, refname, new_sha1, old_sha1, +update_flags, have_old)) + die(failed transaction update for %s, refname); And this could say die(verify %s: %s, refname, err.buf); Done. [...] --- a/refs.h +++ b/refs.h @@ -242,12 +242,15 @@ void ref_transaction_rollback(struct ref_transaction *transaction); * 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 * 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 + * rolled back. + */ Thanks for this documentation. -- To unsubscribe from this list: send the line unsubscribe git in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
