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'\" te .\" Copyright (c) 2005, 2023, Oracle and/or its affiliates. .TH zfs_allow 8 "16 Feb 2023" "Oracle Solaris 11.4" "System Administration Commands" .SH NAME zfs_allow \- delegates ZFS file system administration permission to non-privileged users .SH SYNOPSIS .LP .nf \fBzfs\fR \fBhelp\fR \fIsubcommand\fR | help | \fIproperty\fR \fIproperty-name\fR | \fIpermission\fR .fi .LP .nf \fBzfs\fR \fBhelp\fR -l \fBproperties\fR .fi .LP .nf \fBzfs\fR \fBallow\fR \fIfilesystem\fR|\fIvolume\fR .fi .LP .nf \fBzfs\fR \fBallow\fR [\fB-ldug\fR] \fBeveryone\fR|\fIuser\fR|\fIgroup\fR[,...] \fIperm\fR|\fI@setname\fR[,...] \fIfilesystem\fR|\fIvolume\fR .fi .LP .nf \fBzfs\fR \fBallow\fR [\fB-ld\fR] \fB-e\fR \fIperm\fR|@\fIsetname\fR[,...] \fIfilesystem\fR|\fIvolume\fR .fi .LP .nf \fBzfs\fR \fBallow\fR \fB-c\fR \fIperm\fR|@\fIsetname\fR[,...] \fIfilesystem\fR|\fIvolume\fR .fi .LP .nf \fBzfs\fR \fBallow\fR \fB-s\fR @\fIsetname\fR \fIperm\fR|@\fIsetname\fR[,...] \fIfilesystem\fR|\fIvolume\fR .fi .LP .nf \fBzfs\fR \fBunallow\fR [\fB-rldug\fR] \fBeveryone\fR|\fIuser\fR|\fIgroup\fR[,...] [\fIperm\fR|@\fIsetname\fR[,... ]] \fIfilesystem\fR|\fIvolume\fR .fi .LP .nf \fBzfs\fR \fBunallow\fR [\fB-rld\fR] \fB-e\fR [\fIperm\fR|@\fIsetname\fR[,... ]] \fIfilesystem\fR|\fIvolume\fR .fi .LP .nf \fBzfs\fR \fBunallow\fR [\fB-r\fR] \fB-c\fR [\fIperm\fR|@\fIsetname\fR[ ... ]] \fIfilesystem\fR|\fIvolume\fR .fi .LP .nf \fBzfs\fR \fBunallow\fR [\fB-r\fR] \fB-s\fR @\fIsetname\fR [\fIperm\fR|@\fIsetname\fR[,... ]] \fIfilesystem\fR|\fIvolume\fR .fi .SH DESCRIPTION .sp .LP The \fBzfs allow\fR command can be used to delegate permissions to non-privileged users for administering ZFS file systems in a \fBZFS\fR storage pool, as described in \fBzpool\fR(8). You can use the \fBzfs unallow\fR command to revoke administrative permissions. .sp .LP Permissions are generally the ability to use a \fBZFS\fR subcommand or change a \fBZFS\fR property. The following permissions are available: .sp .in +2 .nf # zfs help permissions The following delegated permissions are supported: NAME TYPE NOTES allow subcommand Must also have the permission that is being allowed clone subcommand Must also have the 'create' ability and 'mount' ability in the origin file system create subcommand Must also have the 'mount' ability destroy subcommand May also need the 'mount' ability diff subcommand Allows lookup of paths within a dataset, given an object number. Ordinary users need this in order to use zfs diff hold subcommand Allows adding a user hold to a snapshot mount subcommand Allows mount/umount of 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 Allows rolling back datasets to previously-taken snapshots send subcommand Allows sending of snapshots share subcommand Allows sharing file systems over NFS or SMB protocols snapshot subcommand Allows taking of snapshots snapdestroy subcommand Also requires the 'mount' ability if the snapshot is mounted. groupquota other Allows accessing any groupquota@... property groupused other Allows reading any groupused@... property key other Allows load/unload of dataset key keychange other Allows key change operations userprop other Allows changing any user property userquota other Allows accessing any userquota@... property userused other Allows reading any userused@... property .fi .in -2 .sp .sp .LP The properties which can have delegated permissions applied are listed in the output of \fBzfs help permissions\fR and in \fBzfs help -l properties\fR in the column labeled \fBDELEG\fR. .SH SUBCOMMANDS .sp .LP All subcommands that modify state are logged persistently to the pool in their original form. .sp .ne 2 .mk .na \fB\fBzfs ?\fR\fR .ad .br .sp .6 .RS 4n Displays a help message. .RE .sp .ne 2 .mk .na \fB\fBzfs help\fR \fIcommand\fR | help | \fIproperty\fR \fIproperty-name\fR | \fIpermission\fR\fR .ad .br .sp .6 .RS 4n Displays \fBzfs\fR command usage information. You can display help for a specific command, property, or delegated permission. If you display help for a specific command or property, the command syntax or property value is displayed. Using \fBzfs help\fR without any arguments displays a complete list of \fBzfs\fR commands. .RE .sp .ne 2 .mk .na \fB\fBzfs help\fR \fB-l properties\fR\fR .ad .br .sp .6 .RS 4n Displays \fBzfs\fR property information, including whether the property value is editable, inheritable, and delegatable, and their possible values. .RE .sp .ne 2 .mk .na \fB\fBzfs allow\fR \fIfilesystem\fR | \fIvolume\fR\fR .ad .br .sp .6 .RS 4n Displays permissions that have been delegated on the specified filesystem or volume. See the other forms of \fBzfs allow\fR for more information. .RE .sp .ne 2 .mk .na \fB\fBzfs allow\fR [\fB-ldug\fR] \fBeveryone\fR|\fIuser\fR|\fIgroup\fR[,...] \fIperm\fR|@\fIsetname\fR[,...] \fIfilesystem\fR| \fIvolume\fR\fR .ad .br .na \fB\fBzfs allow\fR [\fB-ld\fR] \fB-e\fR \fIperm\fR|@\fIsetname\fR[,...] \fIfilesystem\fR | \fIvolume\fR\fR .ad .br .sp .6 .RS 4n Delegates \fBZFS\fR administration permission for the file systems to non-privileged users. .sp .ne 2 .mk .na \fB[\fB-ug\fR] \fBeveryone\fR|\fIuser\fR|\fIgroup\fR[,...]\fR .ad .br .sp .6 .RS 4n Specifies to whom the permissions are delegated. Multiple entities can be specified as a comma-separated list. If neither of the \fB-ug\fR options are specified, then the argument is interpreted preferentially as the keyword \fBeveryone\fR, then as a user name, and lastly as a group name. To specify a user or group named "everyone", use the \fB-u\fR or \fB-g\fR options. To specify a group with the same name as a user, use the \fB-g\fR options. .RE .sp .ne 2 .mk .na \fB[\fB-e\fR] \fIperm\fR|@\fIsetname\fR[,...]\fR .ad .br .sp .6 .RS 4n Specifies that the permissions be delegated to \fBeveryone\fR. Multiple permissions may be specified as a comma-separated list. Permission names are the same as \fBZFS\fR subcommand and property names. See the property list below. Property set names, which begin with an at sign (\fB@\fR) , may be specified. See the \fB-s\fR form below for details. .RE .sp .ne 2 .mk .na \fB[\fB-ld\fR] \fIfilesystem\fR|\fIvolume\fR\fR .ad .br .sp .6 .RS 4n Specifies where the permissions are delegated. If neither of the \fB-ld\fR options are specified, or both are, then the permissions are allowed for the file system or volume, and all of its descendents. If only the \fB-l\fR option is used, then is allowed "locally" only for the specified file system. If only the \fB-d\fR option is used, then is allowed only for the descendent file systems. .RE .RE .sp .ne 2 .mk .na \fB\fBzfs allow\fR \fB-c\fR \fIperm\fR|@\fIsetname\fR[,...] \fIfilesystem\fR|\fIvolume\fR\fR .ad .br .sp .6 .RS 4n Sets "create time" permissions. These permissions are granted (locally) to the creator of any newly-created descendent file system. .RE .sp .ne 2 .mk .na \fB\fBzfs allow\fR \fB-s\fR @\fIsetname\fR \fIperm\fR|@\fIsetname\fR[,...] \fIfilesystem\fR|\fIvolume\fR\fR .ad .br .sp .6 .RS 4n Defines or adds permissions to a permission set. The set can be used by other \fBzfs allow\fR 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 an "at sign" (\fB@\fR), and can be no more than 64 characters long. .RE .sp .ne 2 .mk .na \fB\fBzfs unallow\fR [\fB-rldug\fR] \fBeveryone\fR|\fIuser\fR|\fIgroup\fR[,...] [\fIperm\fR|@\fIsetname\fR[, ...]] \fIfilesystem\fR|\fIvolume\fR\fR .ad .br .na \fB\fBzfs unallow\fR [\fB-rld\fR] \fB-e\fR [\fIperm\fR|@\fIsetname\fR [,...]] \fIfilesystem\fR|\fIvolume\fR\fR .ad .br .na \fB\fBzfs unallow\fR [\fB-r\fR] \fB-c\fR [\fIperm\fR|@\fIsetname\fR[,...]]\fR .ad .br .na \fB\fIfilesystem\fR|\fIvolume\fR\fR .ad .br .sp .6 .RS 4n Removes permissions that were granted with the \fBzfs allow\fR 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 \fIuser\fR, \fIgroup\fR, or \fBeveryone\fR are removed. Specifying \fBeveryone\fR (or using the \fB-e\fR option) only removes the permissions that were granted to \fBeveryone\fR, not all permissions for every user and group. See the \fBzfs allow\fR command for a description of the \fB-ldugec\fR options. .sp .ne 2 .mk .na \fB\fB-r\fR\fR .ad .br .sp .6 .RS 4n Recursively remove the permissions from this file system and all descendents. .RE .RE .sp .ne 2 .mk .na \fB\fBzfs unallow\fR [\fB-r\fR] \fB-s\fR @\fIsetname\fR [\fIperm\fR|@\fIsetname\fR[,...]]\fR .ad .br .na \fB\fIfilesystem\fR|\fIvolume\fR\fR .ad .br .sp .6 .RS 4n Removes permissions from a permission set. If no permissions are specified, then all permissions are removed, thus removing the set entirely. .RE .SH EXAMPLES .LP \fBExample 1\fR Delegating ZFS Administration Permissions on a ZFS Dataset .sp .LP The following example shows how to set permissions so that user \fBanne\fR can create, destroy, mount, and take snapshots on \fBpool/home/anne\fR. The permissions on \fBpool/home/anne\fR are also displayed. .sp .in +2 .nf # \fBzfs allow anne create,destroy,mount,snapshot pool/home/anne\fR # \fBzfs allow pool/home/anne\fR ---- Permissions on pool/home/anne ----------------------------------- Local+Descendent permissions: user anne create,destroy,mount,snapshot .fi .in -2 .sp .sp .LP Because the \fBpool/home/anne\fR mount point permission is set to 755 by default, user \fBanne\fR will be unable to mount file systems under \fBpool/home/anne\fR. Set an \fBACL\fR similar to the following syntax to provide mount point access: .sp .in +2 .nf # \fBchmod A+user:anne:add_subdirectory:allow /pool/home/anne\fR .fi .in -2 .sp .LP \fBExample 2\fR Delegating Create Time Permissions on a ZFS Dataset .sp .LP The following example shows how to grant anyone in the group \fBstaff\fR to create file systems in \fBpool/home\fR. This syntax also allows staff members to destroy their own file systems, but not destroy anyone else's file system. The permissions on \fBpool/home\fR are also displayed. .sp .in +2 .nf # \fBzfs allow staff create,mount pool/home\fR # \fBzfs allow -c destroy pool/home\fR # \fBzfs allow pool/home\fR ---- Permissions on pool/home ---------------------------------------- Create time permissions: destroy Local+Descendent permissions: group staff create,mount .fi .in -2 .sp .LP \fBExample 3\fR Defining and Granting a Permission Set on a ZFS Dataset .sp .LP The following example shows how to define and grant a permission set on the \fBpool/home\fR file system. The permissions on \fBpool/home\fR are also displayed. .sp .in +2 .nf # \fBzfs allow -s @pset create,destroy,snapshot,mount pool/home\fR # \fBzfs allow staff @pset pool/home\fR # \fBzfs allow pool/home\fR ---- Permissions on pool/home ---------------------------------------- Permission sets: @pset create,destroy,mount,snapshot Create time permissions: destroy Local+Descendent permissions: group staff @pset,create,mount .fi .in -2 .sp .LP \fBExample 4\fR Delegating Property Permissions on a ZFS Dataset .sp .LP The following example shows to grant the ability to set quotas and reservations on the \fBtank/users\fR file system. The permissions on \fBtank/users\fR are also displayed. .sp .in +2 .nf # \fBzfs allow mark quota,reservation tank/users\fR # \fBzfs allow tank/users\fR ---- Permissions on tank/users --------------------------------------- Local+Descendent permissions: user mark quota,reservation mark% zfs set quota=10G tank/users/tim mark% zfs get quota tank/users/tim NAME PROPERTY VALUE SOURCE tank/users/tim quota 10G local .fi .in -2 .sp .LP \fBExample 5\fR Removing ZFS Delegated Permissions on a ZFS Dataset .sp .LP The following example shows how to remove the snapshot permission from the \fB@pset\fR permission set for the \fBstaff\fR group on the \fBpool/home\fR file system. The permissions on \fBpool/home\fR are also displayed. .sp .in +2 .nf # \fBzfs unallow -s @pset snapshot pool/home\fR # \fBzfs allow pool/home\fR ---- Permissions on pool/home ---------------------------------------- Permission sets: @pset create,destroy,mount Create time permissions: destroy Local+Descendent permissions: group staff @pset,create,mount .fi .in -2 .sp .SH EXIT STATUS .sp .LP The following exit values are returned: .sp .ne 2 .mk .na \fB\fB0\fR\fR .ad .br .sp .6 .RS 4n Successful completion. .RE .sp .ne 2 .mk .na \fB\fB1\fR\fR .ad .br .sp .6 .RS 4n An error occurred. .RE .sp .ne 2 .mk .na \fB\fB2\fR\fR .ad .br .sp .6 .RS 4n Invalid command line options were specified. .RE .SH ATTRIBUTES .sp .LP See \fBattributes\fR(7) for descriptions of the following attributes: .sp .TS tab( ) box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Availability system/file-system/zfs _ Interface Stability Committed .TE .sp .SH SEE ALSO .sp .LP \fBchmod\fR(2), \fBchown\fR(2), \fBattributes\fR(7), \fBzfs\fR(8), \fBzpool\fR(8) .sp .LP For information about using other \fBZFS\fR features, see zfs_encrypt.8, zfs_share.8, \fBzfs\fR(8) and the \fIManaging ZFS File Systems in Oracle Solaris 11.4\fR.