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packed_refs_lock(): report errors via a struct strbuf *err

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That way the callers don't have to come up with error messages
themselves.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty
2017-06-23 09:01:42 +02:00
committed by Junio C Hamano
parent b7de57d8d1
commit c8bed835c2
3 changed files with 16 additions and 13 deletions
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17
refs/packed-backend.c
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@ -515,7 +515,7 @@ static int write_packed_entry(FILE *fh, const char *refname,
return 0;
}
int packed_refs_lock(struct ref_store *ref_store, int flags)
int packed_refs_lock(struct ref_store *ref_store, int flags, struct strbuf *err)
{
struct packed_ref_store *refs =
packed_downcast(ref_store, REF_STORE_WRITE | REF_STORE_MAIN,
@ -537,9 +537,15 @@ int packed_refs_lock(struct ref_store *ref_store, int flags)
if (hold_lock_file_for_update_timeout(
&refs->lock,
refs->path,
flags, timeout_value) < 0 ||
close_lock_file(&refs->lock))
flags, timeout_value) < 0) {
unable_to_lock_message(refs->path, errno, err);
return -1;
}
if (close_lock_file(&refs->lock)) {
strbuf_addf(err, "unable to close %s: %s", refs->path, strerror(errno));
return -1;
}
/*
* Now that we hold the `packed-refs` lock, make sure that our
@ -698,10 +704,9 @@ int repack_without_refs(struct ref_store *ref_store,
if (!needs_repacking)
return 0; /* no refname exists in packed refs */
if (packed_refs_lock(&refs->base, 0)) {
unable_to_lock_message(refs->path, errno, err);
if (packed_refs_lock(&refs->base, 0, err))
return -1;
}
packed = get_packed_refs(refs);
/* Remove refnames from the cache */