1 .\" Copyright (c) 1983, 1990, 1991, 1993
2 .\" The Regents of the University of California. All rights reserved.
4 .\" This code is derived from software contributed to Berkeley by
5 .\" Robert Elz at The University of Melbourne.
7 .\" Redistribution and use in source and binary forms, with or without
8 .\" modification, are permitted provided that the following conditions
10 .\" 1. Redistributions of source code must retain the above copyright
11 .\" notice, this list of conditions and the following disclaimer.
12 .\" 2. Redistributions in binary form must reproduce the above copyright
13 .\" notice, this list of conditions and the following disclaimer in the
14 .\" documentation and/or other materials provided with the distribution.
15 .\" 4. Neither the name of the University nor the names of its contributors
16 .\" may be used to endorse or promote products derived from this software
17 .\" without specific prior written permission.
19 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 .\" @(#)quotactl.2 8.2 (Berkeley) 3/10/95
39 .Nd manipulate file system quotas
46 .Fn quotactl "const char *path" "int cmd" "int id" "void *addr"
50 system call enables, disables and
51 manipulates file system quotas.
52 A quota control command
55 operates on the given filename
59 (NOTE: One should use the QCMD macro defined in
61 to formulate the value for
63 The address of an optional command specific data structure,
65 may be given; its interpretation
66 is discussed below with each command.
68 Currently quotas are supported only for the
73 a command is composed of a primary command (see below)
74 and a command type used to interpret the
76 Types are supported for interpretation of user identifiers (USRQUOTA)
77 and group identifiers (GRPQUOTA).
80 specific commands are:
81 .Bl -tag -width Q_QUOTAOFFxx
83 Enable disk quotas for the file system specified by
85 The command type specifies the type of the quotas being enabled.
88 argument specifies a file from which to take the quotas.
89 The quota file must exist;
90 it is normally created with the
96 Only the super-user may turn quotas on.
98 Disable disk quotas for the file system specified by
100 The command type specifies the type of the quotas being disabled.
105 arguments are unused.
106 Only the super-user may turn quotas off.
108 Get disk quota limits and current usage for the user or group
109 (as determined by the command type) with identifier
116 structure (defined in
117 .In ufs/ufs/quota.h ) .
119 Set disk quota limits for the user or group
120 (as determined by the command type) with identifier
127 structure (defined in
128 .In ufs/ufs/quota.h ) .
129 The usage fields of the
131 structure are ignored.
132 This system call is restricted to the super-user.
134 Set disk usage limits for the user or group
135 (as determined by the command type) with identifier
142 structure (defined in
143 .In ufs/ufs/quota.h ) .
144 Only the usage fields are used.
145 This system call is restricted to the super-user.
147 Update the on-disk copy of quota usages.
148 The command type specifies which type of quotas are to be updated.
153 arguments are ignored.
160 system call will fail if:
163 The kernel has not been compiled with the
167 The quota table cannot be expanded.
172 or the command type is invalid.
177 quotas are not currently enabled for this file system.
181 the quota file is not a plain file.
183 Search permission is denied for a component of a path prefix.
185 A component of a path prefix was not a directory.
186 .It Bq Er ENAMETOOLONG
187 A component of either pathname exceeded 255 characters,
188 or the entire length of either path name exceeded 1023 characters.
190 A filename does not exist.
192 Too many symbolic links were encountered in translating a pathname.
196 the quota file resides on a read-only file system.
200 error occurred while reading from or writing
201 to a file containing quotas.
205 was supplied; the associated structure could not be copied in or out
211 points outside the process's allocated address space.
213 The call was privileged and the caller was not the super-user.
225 system call appeared in
228 There should be some way to integrate this call with the resource
229 limit interface provided by