lockfile: allow reopening a closed but still locked file

diff --git a/pack-bitmap-write.c b/pack-bitmap-write.c
index 954a74d6cf85a66b90942ce41bfe940c2d3c7b4e..5f1791a59c5e9ecd553fb9109fa774d921f777c8 100644 (file)
--- a/pack-bitmap-write.c
+++ b/pack-bitmap-write.c
@@ -490,6 +490,19 @@ static void write_selected_commits_v1(struct sha1file *f,
        }
 }
 
+static void write_hash_cache(struct sha1file *f,
+                            struct pack_idx_entry **index,
+                            uint32_t index_nr)
+{
+       uint32_t i;
+
+       for (i = 0; i < index_nr; ++i) {
+               struct object_entry *entry = (struct object_entry *)index[i];
+               uint32_t hash_value = htonl(entry->hash);
+               sha1write(f, &hash_value, sizeof(hash_value));
+       }
+}
+
 void bitmap_writer_set_checksum(unsigned char *sha1)
 {
        hashcpy(writer.pack_checksum, sha1);
@@ -497,7 +510,8 @@ void bitmap_writer_set_checksum(unsigned char *sha1)
 
 void bitmap_writer_finish(struct pack_idx_entry **index,
                          uint32_t index_nr,
-                         const char *filename)
+                         const char *filename,
+                         uint16_t options)
 {
        static char tmp_file[PATH_MAX];
        static uint16_t default_version = 1;
@@ -514,9 +528,9 @@ void bitmap_writer_finish(struct pack_idx_entry **index,
 
        memcpy(header.magic, BITMAP_IDX_SIGNATURE, sizeof(BITMAP_IDX_SIGNATURE));
        header.version = htons(default_version);
-       header.options = htons(flags);
+       header.options = htons(flags | options);
        header.entry_count = htonl(writer.selected_nr);
-       memcpy(header.checksum, writer.pack_checksum, 20);
+       hashcpy(header.checksum, writer.pack_checksum);
 
        sha1write(f, &header, sizeof(header));
        dump_bitmap(f, writer.commits);
@@ -525,6 +539,9 @@ void bitmap_writer_finish(struct pack_idx_entry **index,
        dump_bitmap(f, writer.tags);
        write_selected_commits_v1(f, index, index_nr);
 
+       if (options & BITMAP_OPT_HASH_CACHE)
+               write_hash_cache(f, index, index_nr);
+
        sha1close(f, NULL, CSUM_FSYNC);
 
        if (adjust_shared_perm(tmp_file))