This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
213 lines
5.9 KiB
Groff
213 lines
5.9 KiB
Groff
.\" $NetBSD: quotactl.2,v 1.26 2010/05/31 12:16:20 njoly Exp $
|
|
.\"
|
|
.\" Copyright (c) 1983, 1990, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to Berkeley by
|
|
.\" Robert Elz at The University of Melbourne.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)quotactl.2 8.2 (Berkeley) 3/10/95
|
|
.\"
|
|
.Dd October 9, 2008
|
|
.Dt QUOTACTL 2
|
|
.Os
|
|
.Sh NAME
|
|
.Nm quotactl
|
|
.Nd manipulate filesystem quotas
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In ufs/ufs/quota.h
|
|
.Ft int
|
|
.Fn quotactl "const char *path" "int cmd" "int id" "void *addr"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn quotactl
|
|
call enables, disables and
|
|
manipulates filesystem quotas.
|
|
A quota control command
|
|
given by
|
|
.Fa cmd
|
|
operates on the given filename
|
|
.Fa path
|
|
for the given user
|
|
.Fa id .
|
|
The address of an optional command specific data structure,
|
|
.Fa addr ,
|
|
may be given; its interpretation
|
|
is discussed below with each command.
|
|
.Pp
|
|
Currently quotas are supported only for the ``ffs''
|
|
and ``lfs'' filesystem.
|
|
For both of them,
|
|
a command is composed of a primary command (see below)
|
|
and a command type used to interpret the
|
|
.Fa id .
|
|
Types are supported for interpretation of user identifiers
|
|
and group identifiers.
|
|
The ``ffs'' and ``lfs'' specific commands are:
|
|
.Bl -tag -width Q_QUOTAON
|
|
.It Dv Q_QUOTAON
|
|
Enable disk quotas for the filesystem specified by
|
|
.Fa path .
|
|
The command type specifies the type of the quotas being enabled.
|
|
The
|
|
.Fa addr
|
|
argument specifies a file from which to take the quotas.
|
|
The quota file must exist;
|
|
it is normally created with the
|
|
.Xr quotacheck 8
|
|
program.
|
|
The
|
|
.Fa id
|
|
argument is unused.
|
|
Only the super-user may turn quotas on.
|
|
.It Dv Q_QUOTAOFF
|
|
Disable disk quotas for the filesystem specified by
|
|
.Fa path .
|
|
The command type specifies the type of the quotas being disabled.
|
|
The
|
|
.Fa addr
|
|
and
|
|
.Fa id
|
|
arguments are unused.
|
|
Only the super-user may turn quotas off.
|
|
.It Dv Q_GETQUOTA
|
|
Get disk quota limits and current usage for the user or group
|
|
(as determined by the command type) with identifier
|
|
.Fa id .
|
|
.Fa addr
|
|
is a pointer to a
|
|
.Fa struct dqblk
|
|
structure (defined in
|
|
.In ufs/ufs/quota.h ) .
|
|
.It Dv Q_SETQUOTA
|
|
Set disk quota limits for the user or group
|
|
(as determined by the command type) with identifier
|
|
.Fa id .
|
|
.Fa addr
|
|
is a pointer to a
|
|
.Fa struct dqblk
|
|
structure (defined in
|
|
.In ufs/ufs/quota.h ) .
|
|
The usage fields of the
|
|
.Fa dqblk
|
|
structure are ignored.
|
|
This call is restricted to the super-user.
|
|
.It Dv Q_SETUSE
|
|
Set disk usage for the user or group
|
|
(as determined by the command type) with identifier
|
|
.Fa id .
|
|
.Fa addr
|
|
is a pointer to a
|
|
.Fa struct dqblk
|
|
structure (defined in
|
|
.In ufs/ufs/quota.h ) .
|
|
Only the usage fields are used.
|
|
This call is restricted to the super-user.
|
|
.It Dv Q_SYNC
|
|
Update the on-disk copy of quota usages.
|
|
The command type specifies which type of quotas are to be updated.
|
|
The
|
|
.Fa id
|
|
and
|
|
.Fa addr
|
|
parameters are ignored.
|
|
.El
|
|
.Sh RETURN VALUES
|
|
A successful call returns 0,
|
|
otherwise the value \-1 is returned and the global variable
|
|
.Va errno
|
|
indicates the reason for the failure.
|
|
.Sh ERRORS
|
|
A
|
|
.Fn quotactl
|
|
call will fail if:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EOPNOTSUPP
|
|
The kernel has not been compiled with the
|
|
.Dv QUOTA
|
|
option.
|
|
.It Bq Er EUSERS
|
|
The quota table cannot be expanded.
|
|
.It Bq Er EINVAL
|
|
.Fa cmd
|
|
or the command type is invalid.
|
|
.It Bq Er EACCES
|
|
In
|
|
.Dv Q_QUOTAON ,
|
|
the quota file is not a plain file, or
|
|
search permission is denied for a component of a path prefix.
|
|
.It Bq Er ENOTDIR
|
|
A component of a path prefix was not a directory.
|
|
.It Bq Er ENAMETOOLONG
|
|
A component of a pathname exceeded
|
|
.Brq Dv NAME_MAX
|
|
characters, or an entire path name exceeded
|
|
.Brq Dv PATH_MAX
|
|
characters.
|
|
.It Bq Er ENOENT
|
|
A filename does not exist.
|
|
.It Bq Er ELOOP
|
|
Too many symbolic links were encountered in translating a pathname.
|
|
.It Bq Er EROFS
|
|
In
|
|
.Dv Q_QUOTAON ,
|
|
the quota file resides on a read-only filesystem.
|
|
.It Bq Er EIO
|
|
An
|
|
.Tn I/O
|
|
error occurred while reading from or writing
|
|
to a file containing quotas.
|
|
.It Bq Er EFAULT
|
|
.Fa path
|
|
points outside the process's allocated address space, or
|
|
an invalid
|
|
.Fa addr
|
|
was supplied; the associated structure could not be copied in or out
|
|
of the kernel.
|
|
.It Bq Er EPERM
|
|
The call was privileged and the caller was not the super-user.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr quota 1 ,
|
|
.Xr fstab 5 ,
|
|
.Xr edquota 8 ,
|
|
.Xr quotacheck 8 ,
|
|
.Xr quotaon 8 ,
|
|
.Xr repquota 8
|
|
.Sh HISTORY
|
|
The
|
|
.Fn quotactl
|
|
function call appeared in
|
|
.Bx 4.3 Reno .
|
|
.Sh BUGS
|
|
There should be some way to integrate this call with the resource
|
|
limit interface provided by
|
|
.Xr setrlimit 2
|
|
and
|
|
.Xr getrlimit 2 .
|