On Wed, 2017-12-06 at 09:09 +0500, Andrey Rahmatullin wrote: > On Tue, Dec 05, 2017 at 12:48:36PM -0800, Diane Trout wrote: > > I would love for files downloaded via a web browser or email client to > > be marked as having come from the Internet. (Major bonus points if a > > sync tool like nextcloud can keep files I generated labeled separate > > from ones my coworkers made) > > > > OS X web browsers do this, and when you try to open them the OS will > > prompt "this came from the internet, do you want to open it". It looks > > like its implemented with a few extended attributes.  > > Windows too (implemented with NTFS alternate data streams). > > > Do most of our file systems have extended attributes turned on by now? > > I think (or at least hope) so. Yes, xattrs are supported in most filesystems on Linux and our official kernel packages enable them wherever they're an optional feature. $ grep -rwl xattr_handler fs | grep -o '^fs/[^/]*/' | sort -u fs/9p/ fs/afs/ fs/btrfs/ fs/ceph/ fs/cifs/ fs/ecryptfs/ fs/ext2/ fs/ext4/ fs/f2fs/ fs/fuse/ fs/gfs2/ fs/hfs/ fs/hfsplus/ fs/jffs2/ fs/jfs/ fs/kernfs/ fs/nfs/ fs/ocfs2/ fs/orangefs/ fs/overlayfs/ fs/reiserfs/ fs/squashfs/ fs/ubifs/ fs/xfs/ Ben. -- Ben Hutchings If the facts do not conform to your theory, they must be disposed of.
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