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| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-10-23 17:58:11 +0100 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-10-26 18:35:32 +0000 |
| commit | 491bfaea3bd44b47c62f758efffb67a392ded02b (patch) | |
| tree | 817154f481e256245a900ead6520c180d8ae7f06 /docs | |
| parent | 6409cf19ca17ab2acec6f014290f24e137198751 (diff) | |
| download | qemu-491bfaea3bd44b47c62f758efffb67a392ded02b.zip qemu-491bfaea3bd44b47c62f758efffb67a392ded02b.tar.gz qemu-491bfaea3bd44b47c62f758efffb67a392ded02b.tar.bz2 | |
tools/virtiofsd: xattr name mapping examples
Add a few examples of xattrmaps to the documentation.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20201023165812.36028-5-dgilbert@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/tools/virtiofsd.rst | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/docs/tools/virtiofsd.rst b/docs/tools/virtiofsd.rst index 67c16f9..d80c078 100644 --- a/docs/tools/virtiofsd.rst +++ b/docs/tools/virtiofsd.rst @@ -219,6 +219,56 @@ e.g.: would hide 'security.' xattr's in listxattr from the server. +xattr-mapping Examples +---------------------- + +1) Prefix all attributes with 'user.virtiofs.' + +:: + +-o xattrmap=":prefix:all::user.virtiofs.::bad:all:::" + + +This uses two rules, using : as the field separator; +the first rule prefixes and strips 'user.virtiofs.', +the second rule hides any non-prefixed attributes that +the host set. + +2) Prefix 'trusted.' attributes, allow others through + +:: + + "/prefix/all/trusted./user.virtiofs./ + /bad/server//trusted./ + /bad/client/user.virtiofs.// + /ok/all///" + + +Here there are four rules, using / as the field +separator, and also demonstrating that new lines can +be included between rules. +The first rule is the prefixing of 'trusted.' and +stripping of 'user.virtiofs.'. +The second rule hides unprefixed 'trusted.' attributes +on the host. +The third rule stops a guest from explicitly setting +the 'user.virtiofs.' path directly. +Finally, the fourth rule lets all remaining attributes +through. + +3) Hide 'security.' attributes, and allow everything else + +:: + + "/bad/all/security./security./ + /ok/all///' + +The first rule combines what could be separate client and server +rules into a single 'all' rule, matching 'security.' in either +client arguments or lists returned from the host. This stops +the client seeing any 'security.' attributes on the server and +stops it setting any. + Examples -------- |