Teach fast-import to import subtrees named by tree id

diff --git a/pack-refs.c b/pack-refs.c
index 848d311c2b2c651dbb14893c260584f00c639357..7f43f8ac3398fb2dbe393f08811989b0a8d4e2dd 100644 (file)
--- a/pack-refs.c
+++ b/pack-refs.c
@@ -66,7 +66,7 @@ static void prune_ref(struct ref_to_prune *r)
        struct ref_lock *lock = lock_ref_sha1(r->name + 5, r->sha1);
 
        if (lock) {
-               unlink(git_path("%s", r->name));
+               unlink_or_warn(git_path("%s", r->name));
                unlock_ref(lock);
        }
 }
@@ -89,11 +89,11 @@ int pack_refs(unsigned int flags)
        memset(&cbdata, 0, sizeof(cbdata));
        cbdata.flags = flags;
 
-       fd = hold_lock_file_for_update(&packed, git_path("packed-refs"), 1);
+       fd = hold_lock_file_for_update(&packed, git_path("packed-refs"),
+                                      LOCK_DIE_ON_ERROR);
        cbdata.refs_file = fdopen(fd, "w");
        if (!cbdata.refs_file)
-               die("unable to create ref-pack file structure (%s)",
-                   strerror(errno));
+               die_errno("unable to create ref-pack file structure");
 
        /* perhaps other traits later as well */
        fprintf(cbdata.refs_file, "# pack-refs with: peeled \n");
@@ -102,7 +102,7 @@ int pack_refs(unsigned int flags)
        if (ferror(cbdata.refs_file))
                die("failed to write ref-pack file");
        if (fflush(cbdata.refs_file) || fsync(fd) || fclose(cbdata.refs_file))
-               die("failed to write ref-pack file (%s)", strerror(errno));
+               die_errno("failed to write ref-pack file");
        /*
         * Since the lock file was fdopen()'ed and then fclose()'ed above,
         * assign -1 to the lock file descriptor so that commit_lock_file()
@@ -110,7 +110,7 @@ int pack_refs(unsigned int flags)
         */
        packed.fd = -1;
        if (commit_lock_file(&packed) < 0)
-               die("unable to overwrite old ref-pack file (%s)", strerror(errno));
+               die_errno("unable to overwrite old ref-pack file");
        if (cbdata.flags & PACK_REFS_PRUNE)
                prune_refs(cbdata.ref_to_prune);
        return 0;