merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 10 insertions, 15 deletions

diff --git a/third_party/git/pack-write.c b/third_party/git/pack-write.c
index 29d17a9bec27..a6cdb3c67cca 100644
--- a/third_party/git/pack-write.c
+++ b/third_party/git/pack-write.c
@@ -38,9 +38,8 @@ static int need_large_offset(off_t offset, const struct pack_idx_option *opts)
 }
 
 /*
- * On entry *sha1 contains the pack content SHA1 hash, on exit it is
- * the SHA1 hash of sorted object names. The objects array passed in
- * will be sorted by SHA1 on exit.
+ * The *sha1 contains the pack content SHA1 hash.
+ * The objects array passed in will be sorted by SHA1 on exit.
  */
 const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects,
 			   int nr_objects, const struct pack_idx_option *opts,
@@ -118,10 +117,8 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
 	list = sorted_by_sha;
 	for (i = 0; i < nr_objects; i++) {
 		struct pack_idx_entry *obj = *list++;
-		if (index_version < 2) {
-			uint32_t offset = htonl(obj->offset);
-			hashwrite(f, &offset, 4);
-		}
+		if (index_version < 2)
+			hashwrite_be32(f, obj->offset);
 		hashwrite(f, obj->oid.hash, the_hash_algo->rawsz);
 		if ((opts->flags & WRITE_IDX_STRICT) &&
 		    (i && oideq(&list[-2]->oid, &obj->oid)))
@@ -136,8 +133,7 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
 		list = sorted_by_sha;
 		for (i = 0; i < nr_objects; i++) {
 			struct pack_idx_entry *obj = *list++;
-			uint32_t crc32_val = htonl(obj->crc32);
-			hashwrite(f, &crc32_val, 4);
+			hashwrite_be32(f, obj->crc32);
 		}
 
 		/* write the 32-bit offset table */
@@ -149,8 +145,7 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
 			offset = (need_large_offset(obj->offset, opts)
 				  ? (0x80000000 | nr_large_offset++)
 				  : obj->offset);
-			offset = htonl(offset);
-			hashwrite(f, &offset, 4);
+			hashwrite_be32(f, offset);
 		}
 
 		/* write the large offset table */
@@ -349,7 +344,7 @@ void finish_tmp_packfile(struct strbuf *name_buffer,
 			 struct pack_idx_entry **written_list,
 			 uint32_t nr_written,
 			 struct pack_idx_option *pack_idx_opts,
-			 unsigned char sha1[])
+			 unsigned char hash[])
 {
 	const char *idx_tmp_name;
 	int basename_len = name_buffer->len;
@@ -358,18 +353,18 @@ void finish_tmp_packfile(struct strbuf *name_buffer,
 		die_errno("unable to make temporary pack file readable");
 
 	idx_tmp_name = write_idx_file(NULL, written_list, nr_written,
-				      pack_idx_opts, sha1);
+				      pack_idx_opts, hash);
 	if (adjust_shared_perm(idx_tmp_name))
 		die_errno("unable to make temporary index file readable");
 
-	strbuf_addf(name_buffer, "%s.pack", sha1_to_hex(sha1));
+	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", sha1_to_hex(sha1));
+	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");