Method GetXattrAt

pkg/sentry/fsimpl/kernfs/filesystem.go:1119–1142

GetXattrAt implements vfs.FilesystemImpl.GetXattrAt.

(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetXattrOptions)

// GetXattrAt implements vfs.FilesystemImpl.GetXattrAt.
func (fs *Filesystem) GetXattrAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.GetXattrOptions) (string, error) {
	fs.mu.RLock()
	defer fs.processDeferredDecRefs(ctx)
	defer fs.mu.RUnlock()
	d, err := fs.walkExistingLocked(ctx, rp)
	if err != nil {
		return "", err
	}
	if xi, ok := d.inode.(InodeWithXattrs); ok {
		creds := rp.Credentials()
		mode := d.inode.Mode()
		kuid := d.inode.UID()
		kgid := d.inode.GID()
		if err := vfs.GenericCheckPermissions(creds, vfs.MayRead, mode, kuid, kgid); err != nil {
			return "", err
		}
		if err := vfs.CheckXattrPermissions(creds, vfs.MayRead, mode, kuid, opts.Name); err != nil {
			return "", err
		}
		return xi.GetXattr(ctx, opts)
	}
	// kernfs currently does not support extended attributes.
	return "", linuxerr.ENOTSUP
}

// SetXattrAt implements vfs.FilesystemImpl.SetXattrAt.
func (fs *Filesystem) SetXattrAt(ctx context.Context, rp *vfs.ResolvingPath, opts vfs.SetXattrOptions) error {