1#!/bin/sh
2# Validate truncate integer overflow
3
4# Copyright (C) 2008-2023 Free Software Foundation, Inc.
5
6# This program is free software: you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation, either version 3 of the License, or
9# (at your option) any later version.
10
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14# GNU General Public License for more details.
15
16# You should have received a copy of the GNU General Public License
17# along with this program.  If not, see <https://www.gnu.org/licenses/>.
18
19. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
20print_ver_ truncate
21getlimits_
22
23
24# -= overflow
25truncate -s-1 create-zero-len-file || fail=1
26
27echo > non-empty-file
28
29# signed overflow
30returns_ 1 truncate -s$OFF_T_OFLOW file || fail=1
31
32# += signed overflow
33returns_ 1 truncate -s+$OFF_T_MAX non-empty-file || fail=1
34
35# *= signed overflow
36IO_BLOCK_OFLOW=$(expr $OFF_T_MAX / $(stat -f -c%s .) + 1)
37returns_ 1 truncate --io-blocks --size=$IO_BLOCK_OFLOW file || fail=1
38
39Exit $fail
40