Ping? On 2019/1/17 16:21, zhengbin wrote: > If we change the file mtime to 1969, mksquashfs and mount, > the atime/mtime of this file will be underflow. The reason is > treating timestamps with the high bit set as positive > times(before 1970), which should be set as negative times > just like on 32 bit system. After this, the poissble range > of timestamps will be 1901-2038(prev is 1970-2106) on 64 > bit system. > > Signed-off-by: zhengbin <zhengbi...@huawei.com> > --- > fs/squashfs/inode.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c > index e9793b1e49a5..03a6ef77a2d2 100644 > --- a/fs/squashfs/inode.c > +++ b/fs/squashfs/inode.c > @@ -72,7 +72,7 @@ static int squashfs_new_inode(struct super_block *sb, > struct inode *inode, > i_uid_write(inode, i_uid); > i_gid_write(inode, i_gid); > inode->i_ino = le32_to_cpu(sqsh_ino->inode_number); > - inode->i_mtime.tv_sec = le32_to_cpu(sqsh_ino->mtime); > + inode->i_mtime.tv_sec = (signed int)le32_to_cpu(sqsh_ino->mtime); > inode->i_atime.tv_sec = inode->i_mtime.tv_sec; > inode->i_ctime.tv_sec = inode->i_mtime.tv_sec; > inode->i_mode = le16_to_cpu(sqsh_ino->mode); > -- > 2.16.2.dirty > > > . >
