In the file-based backend, the reflog piggybacks on the ref lock.
Since other backends won't have the same sort of ref lock, ref backends
must also handle reflogs.

Signed-off-by: Ronnie Sahlberg <[email protected]>
Signed-off-by: David Turner <[email protected]>
---
 refs-be-files.c | 35 +++++++++++++++++++++++------------
 refs.c          | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 refs.h          | 28 ++++++++++++++++++++++++++++
 3 files changed, 97 insertions(+), 12 deletions(-)

diff --git a/refs-be-files.c b/refs-be-files.c
index f123459..104e90f 100644
--- a/refs-be-files.c
+++ b/refs-be-files.c
@@ -2650,7 +2650,8 @@ static int log_ref_setup(const char *refname, struct 
strbuf *logfile, struct str
 }
 
 
-int safe_create_reflog(const char *refname, int force_create, struct strbuf 
*err)
+static int files_create_reflog(const char *refname, int force_create,
+                              struct strbuf *err)
 {
        int ret;
        struct strbuf sb = STRBUF_INIT;
@@ -2898,7 +2899,7 @@ static int files_create_symref(const char *ref_target,
        return 0;
 }
 
-int reflog_exists(const char *refname)
+static int files_reflog_exists(const char *refname)
 {
        struct stat st;
 
@@ -2906,7 +2907,7 @@ int reflog_exists(const char *refname)
                S_ISREG(st.st_mode);
 }
 
-int delete_reflog(const char *refname)
+static int files_delete_reflog(const char *refname)
 {
        return remove_path(git_path("logs/%s", refname));
 }
@@ -2950,7 +2951,9 @@ static char *find_beginning_of_line(char *bob, char *scan)
        return scan;
 }
 
-int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, 
void *cb_data)
+static int files_for_each_reflog_ent_reverse(const char *refname,
+                                            each_reflog_ent_fn fn,
+                                            void *cb_data)
 {
        struct strbuf sb = STRBUF_INIT;
        FILE *logfp;
@@ -3052,7 +3055,8 @@ int for_each_reflog_ent_reverse(const char *refname, 
each_reflog_ent_fn fn, void
        return ret;
 }
 
-int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, void 
*cb_data)
+static int files_for_each_reflog_ent(const char *refname,
+                                    each_reflog_ent_fn fn, void *cb_data)
 {
        FILE *logfp;
        struct strbuf sb = STRBUF_INIT;
@@ -3114,7 +3118,7 @@ static int do_for_each_reflog(struct strbuf *name, 
each_ref_fn fn, void *cb_data
        return retval;
 }
 
-int for_each_reflog(each_ref_fn fn, void *cb_data)
+static int files_for_each_reflog(each_ref_fn fn, void *cb_data)
 {
        int retval;
        struct strbuf name;
@@ -3429,12 +3433,12 @@ static int expire_reflog_ent(unsigned char *osha1, 
unsigned char *nsha1,
        return 0;
 }
 
-int reflog_expire(const char *refname, const unsigned char *sha1,
-                unsigned int flags,
-                reflog_expiry_prepare_fn prepare_fn,
-                reflog_expiry_should_prune_fn should_prune_fn,
-                reflog_expiry_cleanup_fn cleanup_fn,
-                void *policy_cb_data)
+static int files_reflog_expire(const char *refname, const unsigned char *sha1,
+                              unsigned int flags,
+                              reflog_expiry_prepare_fn prepare_fn,
+                              reflog_expiry_should_prune_fn should_prune_fn,
+                              reflog_expiry_cleanup_fn cleanup_fn,
+                              void *policy_cb_data)
 {
        static struct lock_file reflog_lock;
        struct expire_reflog_cb cb;
@@ -3539,6 +3543,13 @@ struct ref_be refs_be_files = {
        "files",
        files_init_backend,
        files_transaction_commit,
+       files_for_each_reflog_ent,
+       files_for_each_reflog_ent_reverse,
+       files_for_each_reflog,
+       files_reflog_exists,
+       files_create_reflog,
+       files_delete_reflog,
+       files_reflog_expire,
        files_resolve_ref_unsafe,
        files_verify_refname_available,
        files_pack_refs,
diff --git a/refs.c b/refs.c
index 6370ace..304fead 100644
--- a/refs.c
+++ b/refs.c
@@ -1204,3 +1204,49 @@ int for_each_reftype_fullpath(each_ref_fn fn, char 
*type, unsigned int broken,
        return the_refs_backend->for_each_reftype_fullpath(fn, type, broken,
                                                           cb_data);
 }
+
+int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn,
+                               void *cb_data)
+{
+       return the_refs_backend->for_each_reflog_ent_reverse(refname, fn,
+                                                            cb_data);
+}
+
+int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn,
+                       void *cb_data)
+{
+       return the_refs_backend->for_each_reflog_ent(refname, fn, cb_data);
+}
+
+int for_each_reflog(each_ref_fn fn, void *cb_data)
+{
+       return the_refs_backend->for_each_reflog(fn, cb_data);
+}
+
+int reflog_exists(const char *refname)
+{
+       return the_refs_backend->reflog_exists(refname);
+}
+
+int safe_create_reflog(const char *refname, int force_create,
+                      struct strbuf *err)
+{
+       return the_refs_backend->create_reflog(refname, force_create, err);
+}
+
+int delete_reflog(const char *refname)
+{
+       return the_refs_backend->delete_reflog(refname);
+}
+
+int reflog_expire(const char *refname, const unsigned char *sha1,
+                 unsigned int flags,
+                 reflog_expiry_prepare_fn prepare_fn,
+                 reflog_expiry_should_prune_fn should_prune_fn,
+                 reflog_expiry_cleanup_fn cleanup_fn,
+                 void *policy_cb_data)
+{
+       return the_refs_backend->reflog_expire(refname, sha1, flags,
+                                              prepare_fn, should_prune_fn,
+                                              cleanup_fn, policy_cb_data);
+}
diff --git a/refs.h b/refs.h
index e76553a..5888877 100644
--- a/refs.h
+++ b/refs.h
@@ -679,6 +679,27 @@ typedef void ref_backend_init_fn(void *data);
 typedef int ref_transaction_commit_fn(struct ref_transaction *transaction,
                                      struct strbuf *err);
 typedef void ref_transaction_free_fn(struct ref_transaction *transaction);
+
+/* reflog functions */
+typedef int for_each_reflog_ent_fn(const char *refname,
+                                  each_reflog_ent_fn fn,
+                                  void *cb_data);
+typedef int for_each_reflog_ent_reverse_fn(const char *refname,
+                                          each_reflog_ent_fn fn,
+                                          void *cb_data);
+typedef int for_each_reflog_fn(each_ref_fn fn, void *cb_data);
+typedef int reflog_exists_fn(const char *refname);
+typedef int create_reflog_fn(const char *refname, int force_create,
+                            struct strbuf *err);
+typedef int delete_reflog_fn(const char *refname);
+typedef int reflog_expire_fn(const char *refname, const unsigned char *sha1,
+                            unsigned int flags,
+                            reflog_expiry_prepare_fn prepare_fn,
+                            reflog_expiry_should_prune_fn should_prune_fn,
+                            reflog_expiry_cleanup_fn cleanup_fn,
+                            void *policy_cb_data);
+
+/* resolution functions */
 typedef const char *resolve_ref_unsafe_fn(const char *ref,
                                          int resolve_flags,
                                          unsigned char *sha1, int *flags);
@@ -717,6 +738,13 @@ struct ref_be {
        const char *name;
        ref_backend_init_fn *init_backend;
        ref_transaction_commit_fn *transaction_commit;
+       for_each_reflog_ent_fn *for_each_reflog_ent;
+       for_each_reflog_ent_reverse_fn *for_each_reflog_ent_reverse;
+       for_each_reflog_fn *for_each_reflog;
+       reflog_exists_fn *reflog_exists;
+       create_reflog_fn *create_reflog;
+       delete_reflog_fn *delete_reflog;
+       reflog_expire_fn *reflog_expire;
        resolve_ref_unsafe_fn *resolve_ref_unsafe;
        verify_refname_available_fn *verify_refname_available;
        pack_refs_fn *pack_refs;
-- 
2.4.2.644.g97b850b-twtrsrc

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