diff options
Diffstat (limited to 'refs')
| -rw-r--r-- | refs/debug.c | 1 | ||||
| -rw-r--r-- | refs/files-backend.c | 33 | ||||
| -rw-r--r-- | refs/packed-backend.c | 1 | ||||
| -rw-r--r-- | refs/refs-internal.h | 16 |
4 files changed, 46 insertions, 5 deletions
diff --git a/refs/debug.c b/refs/debug.c index 2b0771ca53..c590d37720 100644 --- a/refs/debug.c +++ b/refs/debug.c @@ -435,6 +435,7 @@ struct ref_storage_be refs_be_debug = { debug_ref_iterator_begin, debug_read_raw_ref, + NULL, debug_reflog_iterator_begin, debug_for_each_reflog_ent, diff --git a/refs/files-backend.c b/refs/files-backend.c index f59589d6cc..0457ecdb42 100644 --- a/refs/files-backend.c +++ b/refs/files-backend.c @@ -338,9 +338,9 @@ static struct ref_cache *get_loose_ref_cache(struct files_ref_store *refs) return refs->loose; } -static int files_read_raw_ref(struct ref_store *ref_store, const char *refname, - struct object_id *oid, struct strbuf *referent, - unsigned int *type, int *failure_errno) +static int read_ref_internal(struct ref_store *ref_store, const char *refname, + struct object_id *oid, struct strbuf *referent, + unsigned int *type, int *failure_errno, int skip_packed_refs) { struct files_ref_store *refs = files_downcast(ref_store, REF_STORE_READ, "read_raw_ref"); @@ -381,7 +381,7 @@ stat_ref: if (lstat(path, &st) < 0) { int ignore_errno; myerr = errno; - if (myerr != ENOENT) + if (myerr != ENOENT || skip_packed_refs) goto out; if (refs_read_raw_ref(refs->packed_ref_store, refname, oid, referent, type, &ignore_errno)) { @@ -425,7 +425,8 @@ stat_ref: * ref is supposed to be, there could still be a * packed ref: */ - if (refs_read_raw_ref(refs->packed_ref_store, refname, oid, + if (skip_packed_refs || + refs_read_raw_ref(refs->packed_ref_store, refname, oid, referent, type, &ignore_errno)) { myerr = EISDIR; goto out; @@ -470,6 +471,27 @@ out: return ret; } +static int files_read_raw_ref(struct ref_store *ref_store, const char *refname, + struct object_id *oid, struct strbuf *referent, + unsigned int *type, int *failure_errno) +{ + return read_ref_internal(ref_store, refname, oid, referent, type, failure_errno, 0); +} + +static int files_read_symbolic_ref(struct ref_store *ref_store, const char *refname, + struct strbuf *referent) +{ + struct object_id oid; + int failure_errno, ret; + unsigned int type; + + ret = read_ref_internal(ref_store, refname, &oid, referent, &type, &failure_errno, 1); + if (ret) + return ret; + + return !(type & REF_ISSYMREF); +} + int parse_loose_ref_contents(const char *buf, struct object_id *oid, struct strbuf *referent, unsigned int *type, int *failure_errno) @@ -3286,6 +3308,7 @@ struct ref_storage_be refs_be_files = { files_ref_iterator_begin, files_read_raw_ref, + files_read_symbolic_ref, files_reflog_iterator_begin, files_for_each_reflog_ent, diff --git a/refs/packed-backend.c b/refs/packed-backend.c index 27dd8c3922..f56e2cc635 100644 --- a/refs/packed-backend.c +++ b/refs/packed-backend.c @@ -1684,6 +1684,7 @@ struct ref_storage_be refs_be_packed = { packed_ref_iterator_begin, packed_read_raw_ref, + NULL, packed_reflog_iterator_begin, packed_for_each_reflog_ent, diff --git a/refs/refs-internal.h b/refs/refs-internal.h index 6e15db3ca4..001ef15835 100644 --- a/refs/refs-internal.h +++ b/refs/refs-internal.h @@ -649,6 +649,21 @@ typedef int read_raw_ref_fn(struct ref_store *ref_store, const char *refname, struct object_id *oid, struct strbuf *referent, unsigned int *type, int *failure_errno); +/* + * Read a symbolic reference from the specified reference store. This function + * is optional: if not implemented by a backend, then `read_raw_ref_fn` is used + * to read the symbolcic reference instead. It is intended to be implemented + * only in case the backend can optimize the reading of symbolic references. + * + * Return 0 on success, or -1 on failure. `referent` will be set to the target + * of the symbolic reference on success. This function explicitly does not + * distinguish between error cases and the reference not being a symbolic + * reference to allow backends to optimize this operation in case symbolic and + * non-symbolic references are treated differently. + */ +typedef int read_symbolic_ref_fn(struct ref_store *ref_store, const char *refname, + struct strbuf *referent); + struct ref_storage_be { struct ref_storage_be *next; const char *name; @@ -668,6 +683,7 @@ struct ref_storage_be { ref_iterator_begin_fn *iterator_begin; read_raw_ref_fn *read_raw_ref; + read_symbolic_ref_fn *read_symbolic_ref; reflog_iterator_begin_fn *reflog_iterator_begin; for_each_reflog_ent_fn *for_each_reflog_ent; |