This article describes the filesystems supported for on-access scanning on Linux platforms.
The following sections are covered:
Known to apply to the following Sophos product(s) and version(s)
Sophos Anti-Virus for Linux 9 and Sophos Anti-Virus for Linux 10
Good filesystems
The following filesystems are known to work with Sophos Anti-Virus for Linux:
Filesystem Name | Talpa Support? | Fanotify Support? |
---|---|---|
btrfs | Yes | Yes |
cifs | Yes | No |
ecryptfs | Yes | Yes |
ext2 | Yes | Yes |
ext3 | Yes | Yes |
ext4 | Yes | Yes |
fuse | Yes | Yes |
fuseblk | Yes | Yes |
iso9660 | Yes | Yes |
jfs | Yes | Yes |
minix | Yes | Yes |
msdos | Yes | Yes |
ncpfs | Yes | Yes |
nfs | Yes | Yes |
nfs4 | Yes* | No |
nssadmin | Yes | No |
oes | Yes | No |
overlayfs | Yes | Yes |
overlay | Yes | Yes |
ramfs | Yes | Yes |
reiserfs | Yes | Yes |
smbfs | Yes | Yes |
tmpfs | Yes | Yes |
udf | Yes | Yes |
vfat | Yes | Yes |
xfs | Yes | Yes |
zfs | Yes | No |
*Note: Talpa does not support locally mounted (non-network) nfs4 filesystems.
Unsupported filesystems
The following filesystems are unsupported. The majority of these are pseudo-filesystems that do not contain regular files and cannot be scanned.
Filesystem Name | Talpa Support? | Fanotify Support? | Notes |
---|---|---|---|
aufs | No | No | Pseudo-filesystem |
autofs | No | No | Pseudo-filesystem |
binfmt_misc | No | No | Pseudo-filesystem |
bpf | No | No | Pseudo-filesystem |
cgroup | No | No | Pseudo-filesystem |
configfs | No | No | Pseudo-filesystem |
debugfs | No | No | Pseudo-filesystem |
devfs | No | No | Pseudo-filesystem |
devpts | No | No | Pseudo-filesystem |
devtmpfs | No | No | Pseudo-filesystem |
fuse.gvfs-fuse-daemon |
No | No | See KBA 118982 |
fusectl | No | No | Pseudo-filesystem |
inotifyfs | No | No | Pseudo-filesystem |
mqueue | No | No | Pseudo-filesystem |
nfsd | No | No | Pseudo-filesystem |
nsspool | No | No | Pseudo-filesystem |
proc | No | No | Pseudo-filesystem |
romfs | No | No | Pseudo-filesystem |
rootfs | No | No | Pseudo-filesystem |
rpc_pipefs | No | No | Pseudo-filesystem |
securityfs | No | No | Pseudo-filesystem |
selinuxfs | No | No | Pseudo-filesystem |
squashfs | No | No | |
subfs | No | No | Pseudo-filesystem |
sysfs | No | No | Pseudo-filesystem |
usbdevfs | No | No | Pseudo-filesystem |
usbfs | No | No | Pseudo-filesystem |
Other filesystems
Behavior with other filesystems will depend on the on-access interception method:
- Talpa will attempt to intercept operations on any other filesystem. Talpa is the default method.
- Fanotify will only scan files on the list of good filesystems.
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