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dkim=pass header.i=@siemens.onmicrosoft.com header.s=selector1-siemens-onmicrosoft-com header.b=BODsXZnn; arc=pass (i=1 spf=pass spfdomain=siemens.com dkim=pass dkdomain=siemens.com dmarc=pass fromdomain=siemens.com); spf=pass (google.com: domain of florian.bezdeka@siemens.com designates 40.107.7.57 as permitted sender) smtp.mailfrom=florian.bezdeka@siemens.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=siemens.com Precedence: list Mailing-list: list isar-users@googlegroups.com; contact isar-users+owners@googlegroups.com List-ID: X-Spam-Checked-In-Group: isar-users@googlegroups.com X-Google-Group-Id: 914930254986 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1690520427477216146?= X-GMAIL-MSGID: =?utf-8?q?1690520427477216146?= From: Florian Bezdeka We are getting closer and closer to the year 2038 where the 32 bit time_t overflow will happen. While products (= embedded systems) with an expected life time of 15 years are still save the situation may change if your system has to survive the next 20 years. While ext2 and ext3 file systems are always affected by the time overflow, let's warn the user if these file systems are still being used. If ext4 is affected depends on the inode size chosen during file system creation. At least 256 bytes are necessary to be save. As ext4 is used very often (and partitions may be small first and extended later) this might be an issue for many users. Signed-off-by: Florian Bezdeka --- scripts/lib/wic/partition.py | 38 ++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/scripts/lib/wic/partition.py b/scripts/lib/wic/partition.py index 85eb15c..c165457 100644 --- a/scripts/lib/wic/partition.py +++ b/scripts/lib/wic/partition.py @@ -270,6 +270,8 @@ class Partition(): mkfs_cmd = "fsck.%s -pvfD %s" % (self.fstype, rootfs) exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo) + self.check_for_Y2038_problem(rootfs, native_sysroot) + def prepare_rootfs_btrfs(self, rootfs, oe_builddir, rootfs_dir, native_sysroot, pseudo): """ @@ -356,6 +358,8 @@ class Partition(): (self.fstype, extraopts, label_str, self.fsuuid, rootfs) exec_native_cmd(mkfs_cmd, native_sysroot) + self.check_for_Y2038_problem(rootfs, native_sysroot) + def prepare_empty_partition_btrfs(self, rootfs, oe_builddir, native_sysroot): """ @@ -417,3 +421,37 @@ class Partition(): mkswap_cmd = "mkswap %s -U %s %s" % (label_str, self.fsuuid, path) exec_native_cmd(mkswap_cmd, native_sysroot) + + def check_for_Y2038_problem(self, rootfs, native_sysroot): + """ + Check if the filesystem is affected by the Y2038 problem + (Y2038 problem = 32 bit time_t overflow in January 2038) + """ + def get_err_str(part): + err = "The {} filesystem {} has no Y2038 support." + if part.mountpoint: + args = [part.fstype, "mounted at %s" % part.mountpoint] + elif part.label: + args = [part.fstype, "labeled %s" % part.label] + elif part.part_name: + args = [part.fstype, "in partition %s" % part.part_name] + else: + args = [part.fstype, ""] + return err.format(*args) + + ret, out = exec_native_cmd("dumpe2fs %s" % rootfs, native_sysroot) + + # ext2 and ext3 are always affected by the Y2038 problem + if self.fstype in ["ext2", "ext3"]: + logger.warn(get_err_str(self)) + return + + # if ext4 is affected by the Y2038 problem depends on the inode size + # Remember: inode size depends on the file system size + for line in out.splitlines(): + if line.startswith("Inode size:"): + size = int(line.split(":")[1].strip()) + if size < 256: + logger.warn("%s Inodes (of size %d) are too small." % \ + (get_err_str(self), size)) + break \ No newline at end of file