From: Jonathan Nieder <jrnieder@gmail.com>
To: Michael Haggerty <mhagger@alum.mit.edu>
Cc: git@vger.kernel.org, Ronnie Sahlberg <sahlberg@google.com>,
Junio C Hamano <gitster@pobox.com>
Subject: [PATCH 23/25] refs.c: do not permit err == NULL
Date: Tue, 14 Oct 2014 17:55:06 -0700 [thread overview]
Message-ID: <20141015005506.GA32245@google.com> (raw)
In-Reply-To: <20141015004522.GD32245@google.com>
Date: Thu, 28 Aug 2014 16:42:37 -0700
Some functions that take a strbuf argument to append an error treat
!err as an indication that the message should be suppressed (e.g.,
ref_update_reject_duplicates). Others write the message to stderr on
!err (e.g., repack_without_refs). Others crash (e.g.,
ref_transaction_update).
Some of these behaviors are for historical reasons and others were
accidents. Luckily no callers pass err == NULL any more. Simplify
by consistently requiring the strbuf argument.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Reviewed-by: Ronnie Sahlberg <sahlberg@google.com>
---
refs.c | 46 +++++++++++++++++++++++++++-------------------
1 file changed, 27 insertions(+), 19 deletions(-)
diff --git a/refs.c b/refs.c
index e7000f2..097fb4b 100644
--- a/refs.c
+++ b/refs.c
@@ -2646,6 +2646,8 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
struct string_list_item *ref_to_delete;
int i, ret, removed = 0;
+ assert(err);
+
/* Look for a packed ref */
for (i = 0; i < n; i++)
if (get_packed_ref(refnames[i]))
@@ -2656,13 +2658,8 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
return 0; /* no refname exists in packed refs */
if (lock_packed_refs(0)) {
- if (err) {
- unable_to_lock_message(git_path("packed-refs"), errno,
- err);
- return -1;
- }
- unable_to_lock_error(git_path("packed-refs"), errno);
- return error("cannot delete '%s' from packed refs", refnames[i]);
+ unable_to_lock_message(git_path("packed-refs"), errno, err);
+ return -1;
}
packed = get_packed_refs(&ref_cache);
@@ -2688,7 +2685,7 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
/* Write what remains */
ret = commit_packed_refs();
- if (ret && err)
+ if (ret)
strbuf_addf(err, "unable to overwrite old ref-pack file: %s",
strerror(errno));
return ret;
@@ -2696,6 +2693,8 @@ int repack_without_refs(const char **refnames, int n, struct strbuf *err)
static int delete_ref_loose(struct ref_lock *lock, int flag, struct strbuf *err)
{
+ assert(err);
+
if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {
/*
* loose. The loose file name is the same as the
@@ -3551,6 +3550,8 @@ struct ref_transaction {
struct ref_transaction *ref_transaction_begin(struct strbuf *err)
{
+ assert(err);
+
return xcalloc(1, sizeof(struct ref_transaction));
}
@@ -3590,6 +3591,8 @@ int ref_transaction_update(struct ref_transaction *transaction,
{
struct ref_update *update;
+ assert(err);
+
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: update called for transaction that is not open");
@@ -3622,6 +3625,8 @@ int ref_transaction_create(struct ref_transaction *transaction,
{
struct ref_update *update;
+ assert(err);
+
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: create called for transaction that is not open");
@@ -3653,6 +3658,8 @@ int ref_transaction_delete(struct ref_transaction *transaction,
{
struct ref_update *update;
+ assert(err);
+
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: delete called for transaction that is not open");
@@ -3715,13 +3722,14 @@ static int ref_update_reject_duplicates(struct ref_update **updates, int n,
struct strbuf *err)
{
int i;
+
+ assert(err);
+
for (i = 1; i < n; i++)
if (!strcmp(updates[i - 1]->refname, updates[i]->refname)) {
- const char *str =
- "Multiple updates for ref '%s' not allowed.";
- if (err)
- strbuf_addf(err, str, updates[i]->refname);
-
+ strbuf_addf(err,
+ "Multiple updates for ref '%s' not allowed.",
+ updates[i]->refname);
return 1;
}
return 0;
@@ -3735,6 +3743,8 @@ int ref_transaction_commit(struct ref_transaction *transaction,
int n = transaction->nr;
struct ref_update **updates = transaction->updates;
+ assert(err);
+
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: commit called for transaction that is not open");
@@ -3771,9 +3781,8 @@ int ref_transaction_commit(struct ref_transaction *transaction,
ret = (errno == ENOTDIR)
? TRANSACTION_NAME_CONFLICT
: TRANSACTION_GENERIC_ERROR;
- if (err)
- strbuf_addf(err, "Cannot lock the ref '%s'.",
- update->refname);
+ strbuf_addf(err, "Cannot lock the ref '%s'.",
+ update->refname);
goto cleanup;
}
}
@@ -3786,9 +3795,8 @@ int ref_transaction_commit(struct ref_transaction *transaction,
if (write_ref_sha1(update->lock, update->new_sha1,
update->msg)) {
update->lock = NULL; /* freed by write_ref_sha1 */
- if (err)
- strbuf_addf(err, "Cannot update the ref '%s'.",
- update->refname);
+ strbuf_addf(err, "Cannot update the ref '%s'.",
+ update->refname);
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
}
--
2.1.0.rc2.206.gedb03e5
next prev parent reply other threads:[~2014-10-15 0:55 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-15 0:45 [PATCH v23 0/25] rs/ref-transaction ("Use ref transactions", part 3) Jonathan Nieder
2014-10-15 0:46 ` [PATCH 01/25] mv test: recreate mod/ directory instead of relying on stale copy Jonathan Nieder
2014-10-15 0:46 ` [PATCH 02/25] wrapper.c: remove/unlink_or_warn: simplify, treat ENOENT as success Jonathan Nieder
2014-10-15 0:47 ` [PATCH 03/25] refs.c: lock_ref_sha1_basic is used for all refs Jonathan Nieder
2014-10-15 0:47 ` [PATCH 04/25] wrapper.c: add a new function unlink_or_msg Jonathan Nieder
2014-10-15 0:47 ` [PATCH 05/25] refs.c: add an err argument to delete_ref_loose Jonathan Nieder
2014-10-15 0:48 ` [PATCH 06/25] refs.c: pass the ref log message to _create/delete/update instead of _commit Jonathan Nieder
2014-10-15 0:48 ` [PATCH 07/25] rename_ref: don't ask read_ref_full where the ref came from Jonathan Nieder
2014-10-15 0:49 ` [PATCH 08/25] refs.c: refuse to lock badly named refs in lock_ref_sha1_basic Jonathan Nieder
2014-10-15 0:49 ` [PATCH 09/25] refs.c: call lock_ref_sha1_basic directly from commit Jonathan Nieder
2014-10-15 0:50 ` [PATCH 10/25] refs.c: pass a list of names to skip to is_refname_available Jonathan Nieder
2014-10-15 0:50 ` [PATCH 11/25] refs.c: ref_transaction_commit: distinguish name conflicts from other errors Jonathan Nieder
2014-10-15 0:51 ` [PATCH 12/25] fetch.c: change s_update_ref to use a ref transaction Jonathan Nieder
2014-10-15 0:51 ` [PATCH 13/25] refs.c: make write_ref_sha1 static Jonathan Nieder
2014-10-15 0:51 ` [PATCH 14/25] refs.c: change resolve_ref_unsafe reading argument to be a flags field Jonathan Nieder
2014-10-15 0:52 ` [PATCH 15/25] reflog test: test interaction with detached HEAD Jonathan Nieder
2014-10-15 0:52 ` [PATCH 16/25] branch -d: avoid repeated symref resolution Jonathan Nieder
2014-10-15 0:52 ` [PATCH 17/25] branch -d: simplify by using RESOLVE_REF_READING Jonathan Nieder
2014-10-15 0:53 ` [PATCH 18/25] packed-ref cache: forbid dot-components in refnames Jonathan Nieder
2014-10-15 0:53 ` [PATCH 19/25] test: put tests for handling of bad ref names in one place Jonathan Nieder
2014-10-15 0:54 ` [PATCH 20/25] refs.c: allow listing and deleting badly named refs Jonathan Nieder
2014-10-15 0:54 ` [PATCH 21/25] for-each-ref: skip and warn about broken ref names Jonathan Nieder
2014-10-15 0:54 ` [PATCH 22/25] remote rm/prune: print a message when writing packed-refs fails Jonathan Nieder
2014-10-15 0:55 ` Jonathan Nieder [this message]
2014-10-15 0:55 ` [PATCH 24/25] lockfile: remove unable_to_lock_error Jonathan Nieder
2014-10-15 0:55 ` [PATCH 25/25] ref_transaction_commit: bail out on failure to remove a ref Jonathan Nieder
2014-10-15 21:36 ` [PATCH v23 0/25] rs/ref-transaction ("Use ref transactions", part 3) Junio C Hamano
2014-10-16 23:27 ` Michael Haggerty
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