From: Han-Wen Nienhuys <hanwen@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
refs.c | 24 ++++++++++++++++--------
refs/files-backend.c | 10 ++++++----
refs/packed-backend.c | 7 ++++---
refs/refs-internal.h | 6 +++---
4 files changed, 29 insertions(+), 18 deletions(-)
diff --git a/refs.c b/refs.c
index ad56dbb0125..200c44e6963 100644
--- a/refs.c
+++ b/refs.c
@@ -1666,17 +1666,18 @@ static int refs_read_special_head(struct ref_store *ref_store,
return result;
}
-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)
{
+ assert(failure_errno);
if (!strcmp(refname, "FETCH_HEAD") || !strcmp(refname, "MERGE_HEAD")) {
return refs_read_special_head(ref_store, refname, oid, referent,
type);
}
return ref_store->be->read_raw_ref(ref_store, refname, oid, referent,
- type, &errno);
+ type, failure_errno);
}
const char *refs_werrres_ref_unsafe(struct ref_store *refs,
@@ -1720,9 +1721,8 @@ const char *refs_werrres_ref_unsafe(struct ref_store *refs,
for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) {
unsigned int read_flags = 0;
- errno = 0;
- if (refs_read_raw_ref(refs, refname,
- oid, &sb_refname, &read_flags)) {
+ if (refs_read_raw_ref(refs, refname, oid, &sb_refname,
+ &read_flags, failure_errno)) {
*flags |= read_flags;
if (errno)
*failure_errno = errno;
@@ -2240,6 +2240,13 @@ int refs_verify_refname_available(struct ref_store *refs,
strbuf_grow(&dirname, strlen(refname) + 1);
for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) {
+ /*
+ * Just saying "Is a directory" when we e.g. can't
+ * lock some multi-level ref isn't very informative,
+ * the user won't be told *what* is a directory, so
+ * let's not use strerror() below.
+ */
+ int ignore_errno;
/* Expand dirname to the new prefix, not including the trailing slash: */
strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len);
@@ -2251,7 +2258,8 @@ int refs_verify_refname_available(struct ref_store *refs,
if (skip && string_list_has_string(skip, dirname.buf))
continue;
- if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, &type)) {
+ if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent,
+ &type, &ignore_errno)) {
strbuf_addf(err, _("'%s' exists; cannot create '%s'"),
dirname.buf, refname);
goto cleanup;
diff --git a/refs/files-backend.c b/refs/files-backend.c
index 6a6ead0b99b..94c194665ed 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -381,10 +381,11 @@ static int files_read_raw_ref(struct ref_store *ref_store, const char *refname,
goto out;
if (lstat(path, &st) < 0) {
+ int ignore_errno;
if (errno != ENOENT)
goto out;
- if (refs_read_raw_ref(refs->packed_ref_store, refname,
- oid, referent, type)) {
+ if (refs_read_raw_ref(refs->packed_ref_store, refname, oid,
+ referent, type, &ignore_errno)) {
errno = ENOENT;
goto out;
}
@@ -418,13 +419,14 @@ static int files_read_raw_ref(struct ref_store *ref_store, const char *refname,
/* Is it a directory? */
if (S_ISDIR(st.st_mode)) {
+ int ignore_errno;
/*
* Even though there is a directory where the loose
* ref is supposed to be, there could still be a
* packed ref:
*/
- if (refs_read_raw_ref(refs->packed_ref_store, refname,
- oid, referent, type)) {
+ if (refs_read_raw_ref(refs->packed_ref_store, refname, oid,
+ referent, type, &ignore_errno)) {
errno = EISDIR;
goto out;
}
diff --git a/refs/packed-backend.c b/refs/packed-backend.c
index 47247a14917..52cdc94a26e 100644
--- a/refs/packed-backend.c
+++ b/refs/packed-backend.c
@@ -1347,6 +1347,7 @@ int is_packed_transaction_needed(struct ref_store *ref_store,
ret = 0;
for (i = 0; i < transaction->nr; i++) {
struct ref_update *update = transaction->updates[i];
+ int failure_errno;
unsigned int type;
struct object_id oid;
@@ -1357,9 +1358,9 @@ int is_packed_transaction_needed(struct ref_store *ref_store,
*/
continue;
- if (!refs_read_raw_ref(ref_store, update->refname,
- &oid, &referent, &type) ||
- errno != ENOENT) {
+ if (!refs_read_raw_ref(ref_store, update->refname, &oid,
+ &referent, &type, &failure_errno) ||
+ failure_errno != ENOENT) {
/*
* We have to actually delete that reference
* -> this transaction is needed.
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index 72746407fc3..c87f1135e5b 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -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
--
2.33.1.1338.g20da966911a
