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Re: [PATCH 03/11] refs.c: change ref_transaction_create to do error checking and return status

From
Michael Haggerty <mhagger@alum.mit.edu>
Date
Apr 19, 2014, 18:59 UTC
Message-ID
<5352C77D.3090106@alum.mit.edu>
In-Reply-To
<1397763987-4453-4-git-send-email-sahlberg@google.com>
On 04/17/2014 09:46 PM, Ronnie Sahlberg wrote:
Show 21 quoted lines
> Do basic error checking in ref_transaction_create() and make it return
> status. Update all callers to check the result of ref_transaction_create()
> 
> Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
> ---
>  builtin/update-ref.c |  4 +++-
>  refs.c               | 17 +++++++++++------
>  refs.h               |  8 ++++----
>  3 files changed, 18 insertions(+), 11 deletions(-)
> 
> diff --git a/builtin/update-ref.c b/builtin/update-ref.c
> index 12bfacc..1b8a087 100644
> --- a/builtin/update-ref.c
> +++ b/builtin/update-ref.c
> @@ -226,7 +226,9 @@ static const char *parse_cmd_create(struct strbuf *input, const char *next)
>  	if (*next != line_termination)
>  		die("create %s: extra input: %s", refname, next);
>  
> -	ref_transaction_create(transaction, refname, new_sha1, update_flags);
> +	if(ref_transaction_create(transaction, refname, new_sha1,
> +				  update_flags))
Space between "if" and opening parenthesis.
Show 26 quoted lines
> +		die("failed transaction create for %s", refname);
>  
>  	update_flags = 0;
>  	free(refname);
> diff --git a/refs.c b/refs.c
> index da1761d..c46249f 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -3347,18 +3347,23 @@ int ref_transaction_update(struct ref_transaction *transaction,
>  	return 0;
>  }
>  
> -void ref_transaction_create(struct ref_transaction *transaction,
> -			    const char *refname,
> -			    const unsigned char *new_sha1,
> -			    int flags)
> +int ref_transaction_create(struct ref_transaction *transaction,
> +			   const char *refname,
> +			   const unsigned char *new_sha1,
> +			   int flags)
>  {
> -	struct ref_update *update = add_update(transaction, refname);
> +	struct ref_update *update;
> +
> +	if (!new_sha1 || is_null_sha1(new_sha1))
> +		return error("create ref with null new_sha1");
Please die("BUG: ...").
Show 32 quoted lines
> +
> +	update = add_update(transaction, refname);
>  
> -	assert(!is_null_sha1(new_sha1));
>  	hashcpy(update->new_sha1, new_sha1);
>  	hashclr(update->old_sha1);
>  	update->flags = flags;
>  	update->have_old = 1;
> +	return 0;
>  }
>  
>  void ref_transaction_delete(struct ref_transaction *transaction,
> diff --git a/refs.h b/refs.h
> index 00e4f7b..8799e15 100644
> --- a/refs.h
> +++ b/refs.h
> @@ -249,10 +249,10 @@ int ref_transaction_update(struct ref_transaction *transaction,
>   * null SHA-1.  It is verified that the reference does not exist
>   * already.
>   */
> -void ref_transaction_create(struct ref_transaction *transaction,
> -			    const char *refname,
> -			    const unsigned char *new_sha1,
> -			    int flags);
> +int ref_transaction_create(struct ref_transaction *transaction,
> +			   const char *refname,
> +			   const unsigned char *new_sha1,
> +			   int flags);
>  
>  /*
>   * Add a reference deletion to transaction.  If have_old is true, then
> 
Michael
-- 
Michael Haggerty
mhagger@alum.mit.edu
http://softwareswirl.blogspot.com/
Previous: Ronnie SahlbergNext: Ronnie Sahlberg
Message 8 of 24 in “Use ref transactions from most callers”
  1. 00/11 Use ref transactions from most callersRonnie Sahlberg, Apr 17, 2014
  2. 01/11 refs.c: constify the sha arguments for ref_transaction_create|delete|updateRonnie Sahlberg, Apr 17, 2014
  3. Michael HaggertyApr 19, 2014
  4. 02/11 refs.c: change ref_transaction_update() to do error checking and return statusRonnie Sahlberg, Apr 17, 2014
  5. Michael HaggertyApr 19, 2014
  6. Jonathan NiederApr 25, 2014
  7. 03/11 refs.c: change ref_transaction_create to do error checking and return statusRonnie Sahlberg, Apr 17, 2014
  8. Michael HaggertyApr 19, 2014
  9. 04/11 refs.c: ref_transaction_delete to check for error and return statusRonnie Sahlberg, Apr 17, 2014
  10. Michael HaggertyApr 19, 2014
  11. 05/11 tag.c: use ref transactions when doing updatesRonnie Sahlberg, Apr 17, 2014
  12. Michael HaggertyApr 19, 2014
  13. 06/11 replace.c: use the ref transaction functions for updatesRonnie Sahlberg, Apr 17, 2014
  14. Michael HaggertyApr 19, 2014
  15. 07/11 commit.c: use ref transactions for updatesRonnie Sahlberg, Apr 17, 2014
  16. Michael HaggertyApr 19, 2014
  17. Ronnie SahlbergApr 21, 2014
  18. 08/11 sequencer.c: use ref transactions for all ref updatesRonnie Sahlberg, Apr 17, 2014
  19. 09/11 fast-import.c: change update_branch to use ref transactionsRonnie Sahlberg, Apr 17, 2014
  20. 10/11 branch.c: use ref transaction for all ref updatesRonnie Sahlberg, Apr 17, 2014
  21. 11/11 walker.c: use ref transaction for ref updatesRonnie Sahlberg, Apr 17, 2014
  22. Michael HaggertyApr 19, 2014
  23. Junio C HamanoApr 21, 2014
  24. Ronnie SahlbergApr 21, 2014

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