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refs API: make refs_read_raw_ref() not set errno

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Add a "failure_errno" to refs_read_raw_ref(), his allows
refs_werrres_ref_unsafe() to pass along its "failure_errno", as a
first step before its own callers are migrated to pass it further up
the chain.

We are leaving out out the refs_read_special_head() in
refs_read_raw_ref() for now, as noted in a subsequent commit moving it
to "failure_errno" will require some special consideration.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Han-Wen Nienhuys
2021-10-16 11:39:09 +02:00
committed by Junio C Hamano
parent ef18119dec
commit 8b72fea7e9
4 changed files with 29 additions and 18 deletions
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6
refs/refs-internal.h
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@ -149,9 +149,9 @@ struct ref_update {
const char refname[FLEX_ARRAY];
};
int refs_read_raw_ref(struct ref_store *ref_store,
const char *refname, struct object_id *oid,
struct strbuf *referent, unsigned int *type);
int refs_read_raw_ref(struct ref_store *ref_store, const char *refname,
struct object_id *oid, struct strbuf *referent,
unsigned int *type, int *failure_errno);
/*
* Write an error to `err` and return a nonzero value iff the same