fetch-pack: expose fetch_pack_config_cb()

During fetch-pack operations, git-index-pack(1) may be spawned and
perform fsck checks. The message severity of these checks is
configurable and propagated via appending it to the `--fsck-objects`
option.

With `fetch_pack_config_cb()`, fsck configuration gets populated to a
`fetch_pack_options`. Expose `fetch_pack_config_cb()`, to facilitate
formatted fsck message configuration generation. In a subsequent commit,
this is used to wire message configuration to `unbundle()` during bundle
fetches.

Signed-off-by: Justin Tobler <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: jltobler

fetch-pack.c

@@ -1857,8 +1857,8 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
 	return ref;
 }
 
-static int fetch_pack_config_cb(const char *var, const char *value,
-				const struct config_context *ctx, void *cb)
+int fetch_pack_config_cb(const char *var, const char *value,
+			 const struct config_context *ctx, void *cb)
 {
 	struct fetch_pack_options *opts = cb;
 	const char *msg_id;

fetch-pack.h

@@ -1,6 +1,7 @@
 #ifndef FETCH_PACK_H
 #define FETCH_PACK_H
 
+#include "config.h"
 #include "string-list.h"
 #include "protocol.h"
 #include "list-objects-filter-options.h"
@@ -114,4 +115,7 @@ struct fetch_pack_options {
 	.fsck_msg_types = STRBUF_INIT, \
 }
 
+int fetch_pack_config_cb(const char *var, const char *value,
+			 const struct config_context *ctx, void *cb);
+
 #endif