Merge branch 'master' of git://repo.or.cz/git/fastimport

* 'master' of git://repo.or.cz/git/fastimport:
  fast-import: size_t vs ssize_t
  fix importing of subversion tars
  Don't repack existing objects in fast-import

contrib/fast-import/import-tars.perl

@@ -64,7 +64,12 @@
 		}
 		print FI "\n";
 
-		my $path = "$prefix$name";
+		my $path;
+		if ($prefix) {
+			$path = "$prefix/$name";
+		} else {
+			$path = "$name";
+		}
 		$files{$path} = [$next_mark++, $mode];
 
 		$commit_time = $mtime if $mtime > $commit_time;

fast-import.c

@@ -673,7 +673,7 @@ static void fixup_header_footer(void)
 
 	buf = xmalloc(buf_sz);
 	for (;;) {
-		size_t n = xread(pack_fd, buf, buf_sz);
+		ssize_t n = xread(pack_fd, buf, buf_sz);
 		if (!n)
 			break;
 		if (n < 0)
@@ -904,6 +904,12 @@ static int store_object(
 	if (e->offset) {
 		duplicate_count_by_type[type]++;
 		return 1;
+	} else if (find_sha1_pack(sha1, packed_git)) {
+		e->type = type;
+		e->pack_id = MAX_PACK_ID;
+		e->offset = 1; /* just not zero! */
+		duplicate_count_by_type[type]++;
+		return 1;
 	}
 
 	if (last && last->data && last->depth < max_depth) {
@@ -2021,6 +2027,7 @@ static void import_marks(const char *input_file)
 			e = insert_object(sha1);
 			e->type = type;
 			e->pack_id = MAX_PACK_ID;
+			e->offset = 1; /* just not zero! */
 		}
 		insert_mark(mark, e);
 	}
@@ -2086,6 +2093,7 @@ int main(int argc, const char **argv)
 	if (i != argc)
 		usage(fast_import_usage);
 
+	prepare_packed_git();
 	start_packfile();
 	for (;;) {
 		read_next_command();