Merge branch 'tb/pack-finalize-ordering'

The order in which various files that make up a single (conceptual)
packfile has been reevaluated and straightened up.  This matters in
correctness, as an incomplete set of files must not be shown to a
running Git.

* tb/pack-finalize-ordering:
  pack-objects: rename .idx files into place after .bitmap files
  pack-write: split up finish_tmp_packfile() function
  builtin/index-pack.c: move `.idx` files into place last
  index-pack: refactor renaming in final()
  builtin/repack.c: move `.idx` files into place last
  pack-write.c: rename `.idx` files after `*.rev`
  pack-write: refactor renaming in finish_tmp_packfile()
  bulk-checkin.c: store checksum directly
  pack.h: line-wrap the definition of finish_tmp_packfile()

1 files changed, 28 insertions, 29 deletions

diff --git a/pack-write.c b/pack-write.c
index 067054f097..a5846f3a34 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -461,49 +461,48 @@ struct hashfile *create_tmp_packfile(char **pack_tmp_name)
 	return hashfd(fd, *pack_tmp_name);
 }
 
-void finish_tmp_packfile(struct strbuf *name_buffer,
+static void rename_tmp_packfile(struct strbuf *name_prefix, const char *source,
+				const char *ext)
+{
+	size_t name_prefix_len = name_prefix->len;
+
+	strbuf_addstr(name_prefix, ext);
+	if (rename(source, name_prefix->buf))
+		die_errno("unable to rename temporary file to '%s'",
+			  name_prefix->buf);
+	strbuf_setlen(name_prefix, name_prefix_len);
+}
+
+void rename_tmp_packfile_idx(struct strbuf *name_buffer,
+			     char **idx_tmp_name)
+{
+	rename_tmp_packfile(name_buffer, *idx_tmp_name, "idx");
+}
+
+void stage_tmp_packfiles(struct strbuf *name_buffer,
 			 const char *pack_tmp_name,
 			 struct pack_idx_entry **written_list,
 			 uint32_t nr_written,
 			 struct pack_idx_option *pack_idx_opts,
-			 unsigned char hash[])
+			 unsigned char hash[],
+			 char **idx_tmp_name)
 {
-	const char *idx_tmp_name, *rev_tmp_name = NULL;
-	int basename_len = name_buffer->len;
+	const char *rev_tmp_name = NULL;
 
 	if (adjust_shared_perm(pack_tmp_name))
 		die_errno("unable to make temporary pack file readable");
 
-	idx_tmp_name = write_idx_file(NULL, written_list, nr_written,
-				      pack_idx_opts, hash);
-	if (adjust_shared_perm(idx_tmp_name))
+	*idx_tmp_name = (char *)write_idx_file(NULL, written_list, nr_written,
+					       pack_idx_opts, hash);
+	if (adjust_shared_perm(*idx_tmp_name))
 		die_errno("unable to make temporary index file readable");
 
 	rev_tmp_name = write_rev_file(NULL, written_list, nr_written, hash,
 				      pack_idx_opts->flags);
 
-	strbuf_addf(name_buffer, "%s.pack", hash_to_hex(hash));
-
-	if (rename(pack_tmp_name, name_buffer->buf))
-		die_errno("unable to rename temporary pack file");
-
-	strbuf_setlen(name_buffer, basename_len);
-
-	strbuf_addf(name_buffer, "%s.idx", hash_to_hex(hash));
-	if (rename(idx_tmp_name, name_buffer->buf))
-		die_errno("unable to rename temporary index file");
-
-	strbuf_setlen(name_buffer, basename_len);
-
-	if (rev_tmp_name) {
-		strbuf_addf(name_buffer, "%s.rev", hash_to_hex(hash));
-		if (rename(rev_tmp_name, name_buffer->buf))
-			die_errno("unable to rename temporary reverse-index file");
-	}
-
-	strbuf_setlen(name_buffer, basename_len);
-
-	free((void *)idx_tmp_name);
+	rename_tmp_packfile(name_buffer, pack_tmp_name, "pack");
+	if (rev_tmp_name)
+		rename_tmp_packfile(name_buffer, rev_tmp_name, "rev");
 }
 
 void write_promisor_file(const char *promisor_name, struct ref **sought, int nr_sought)