Provided by: zfsutils-linux_2.1.9-2ubuntu1_amd64 bug

NAME

     zfs-allow — delegate ZFS administration permissions to unprivileged users

SYNOPSIS

     zfs allow [-dglu] user|group[,user|group]… perm|@setname[,perm|@setname]… filesystem|volume
     zfs allow [-dl] -e|everyone perm|@setname[,perm|@setname]… filesystem|volume
     zfs allow -c perm|@setname[,perm|@setname]… filesystem|volume
     zfs allow -s @setname perm|@setname[,perm|@setname]… filesystem|volume
     zfs unallow [-dglru] user|group[,user|group]… [perm|@setname[,perm|@setname]…]
         filesystem|volume
     zfs unallow [-dlr] -e|everyone [perm|@setname[,perm|@setname]…] filesystem|volume
     zfs unallow [-r] -c [perm|@setname[,perm|@setname]…] filesystem|volume
     zfs unallow [-r] -s @setname [perm|@setname[,perm|@setname]…] filesystem|volume

DESCRIPTION

     zfs allow filesystem|volume
       Displays permissions that have been delegated on the specified filesystem or volume.  See
       the other forms of zfs allow for more information.

       Delegations are supported under Linux with the exception of mount, unmount, mountpoint,
       canmount, rename, and share.  These permissions cannot be delegated because the Linux
       mount(8) command restricts modifications of the global namespace to the root user.

     zfs allow [-dglu] user|group[,user|group]… perm|@setname[,perm|@setname]… filesystem|volume

     zfs allow [-dl] -e|everyone perm|@setname[,perm|@setname]… filesystem|volume
       Delegates ZFS administration permission for the file systems to non-privileged users.

       -d  Allow only for the descendent file systems.

       -e|everyone
           Specifies that the permissions be delegated to everyone.

       -g group[,group]…
           Explicitly specify that permissions are delegated to the group.

       -l  Allow "locally" only for the specified file system.

       -u user[,user]…
           Explicitly specify that permissions are delegated to the user.

       user|group[,user|group]…
           Specifies to whom the permissions are delegated.  Multiple entities can be specified
           as a comma-separated list.  If neither of the -gu options are specified, then the
           argument is interpreted preferentially as the keyword everyone, then as a user name,
           and lastly as a group name.  To specify a user or group named "everyone", use the -g
           or -u options.  To specify a group with the same name as a user, use the -g options.

       perm|@setname[,perm|@setname]…
           The permissions to delegate.  Multiple permissions may be specified as a comma-
           separated list.  Permission names are the same as ZFS subcommand and property names.
           See the property list below.  Property set names, which begin with @, may be
           specified.  See the -s form below for details.

       If neither of the -dl options are specified, or both are, then the permissions are allowed
       for the file system or volume, and all of its descendents.

       Permissions are generally the ability to use a ZFS subcommand or change a ZFS property.
       The following permissions are available:
       NAME                   TYPE         NOTES
       ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
       allow                  subcommand   Must also have the permission that is being allowed
       bookmark               subcommand

       clone                  subcommand   Must also have the create ability and mount ability in the origin file system
       create                 subcommand   Must also have the mount ability. Must also have the refreservation ability to create a non-sparse volume.
       destroy                subcommand   Must also have the mount ability
       diff                   subcommand   Allows lookup of paths within a dataset given an object number, and the ability to create snapshots necessary to zfs diff.
       hold                   subcommand   Allows adding a user hold to a snapshot
       load-key               subcommand   Allows loading and unloading of encryption key (see zfs load-key and zfs unload-key).
       change-key             subcommand   Allows changing an encryption key via zfs change-key.
       mount                  subcommand   Allows mounting/umounting ZFS datasets
       promote                subcommand   Must also have the mount and promote ability in the origin file system
       receive                subcommand   Must also have the mount and create ability
       release                subcommand   Allows releasing a user hold which might destroy the snapshot
       rename                 subcommand   Must also have the mount and create ability in the new parent
       rollback               subcommand   Must also have the mount ability
       send                   subcommand
       share                  subcommand   Allows sharing file systems over NFS or SMB protocols
       snapshot               subcommand   Must also have the mount ability

       groupquota             other        Allows accessing any groupquota@... property
       groupobjquota          other        Allows accessing any groupobjquota@... property
       groupused              other        Allows reading any groupused@... property
       groupobjused           other        Allows reading any groupobjused@... property
       userprop               other        Allows changing any user property
       userquota              other        Allows accessing any userquota@... property
       userobjquota           other        Allows accessing any userobjquota@... property
       userused               other        Allows reading any userused@... property
       userobjused            other        Allows reading any userobjused@... property
       projectobjquota        other        Allows accessing any projectobjquota@... property
       projectquota           other        Allows accessing any projectquota@... property
       projectobjused         other        Allows reading any projectobjused@... property
       projectused            other        Allows reading any projectused@... property

       aclinherit             property
       aclmode                property
       acltype                property
       atime                  property
       canmount               property
       casesensitivity        property
       checksum               property
       compression            property
       context                property
       copies                 property
       dedup                  property
       defcontext             property
       devices                property
       dnodesize              property
       encryption             property
       exec                   property
       filesystem_limit       property
       fscontext              property
       keyformat              property
       keylocation            property
       logbias                property
       mlslabel               property
       mountpoint             property
       nbmand                 property
       normalization          property
       overlay                property
       pbkdf2iters            property
       primarycache           property
       quota                  property
       readonly               property
       recordsize             property
       redundant_metadata     property
       refquota               property
       refreservation         property

       relatime               property
       reservation            property
       rootcontext            property
       secondarycache         property
       setuid                 property
       sharenfs               property
       sharesmb               property
       snapdev                property
       snapdir                property
       snapshot_limit         property
       special_small_blocks   property
       sync                   property
       utf8only               property
       version                property
       volblocksize           property
       volmode                property
       volsize                property
       vscan                  property
       xattr                  property
       zoned                  property

     zfs allow -c perm|@setname[,perm|@setname]… filesystem|volume
       Sets "create time" permissions.  These permissions are granted (locally) to the creator of
       any newly-created descendent file system.

     zfs allow -s @setname perm|@setname[,perm|@setname]… filesystem|volume
       Defines or adds permissions to a permission set.  The set can be used by other zfs allow
       commands for the specified file system and its descendents.  Sets are evaluated
       dynamically, so changes to a set are immediately reflected.  Permission sets follow the
       same naming restrictions as ZFS file systems, but the name must begin with @, and can be
       no more than 64 characters long.

     zfs unallow [-dglru] user|group[,user|group]… [perm|@setname[,perm|@setname]…]
       filesystem|volume

     zfs unallow [-dlr] -e|everyone [perm|@setname[,perm|@setname]…] filesystem|volume

     zfs unallow [-r] -c [perm|@setname[,perm|@setname]…] filesystem|volume
       Removes permissions that were granted with the zfs allow command.  No permissions are
       explicitly denied, so other permissions granted are still in effect.  For example, if the
       permission is granted by an ancestor.  If no permissions are specified, then all
       permissions for the specified user, group, or everyone are removed.  Specifying everyone
       (or using the -e option) only removes the permissions that were granted to everyone, not
       all permissions for every user and group.  See the zfs allow command for a description of
       the -ldugec options.

       -r  Recursively remove the permissions from this file system and all descendents.

     zfs unallow [-r] -s @setname [perm|@setname[,perm|@setname]…] filesystem|volume
       Removes permissions from a permission set.  If no permissions are specified, then all
       permissions are removed, thus removing the set entirely.