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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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6
refs/packed-backend.h
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@ -6,10 +6,10 @@ struct ref_store *packed_ref_store_create(const char *path,
/*
* Lock the packed-refs file for writing. Flags is passed to
* hold_lock_file_for_update(). Return 0 on success. On errors, set
* errno appropriately and return a nonzero value.
* hold_lock_file_for_update(). Return 0 on success. On errors, write
* an error message to `err` and return a nonzero value.
*/
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);
void add_packed_ref(struct ref_store *ref_store,
const char *refname, const struct object_id *oid);