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.\" Copyright (C) 2001, 2002, 2003, 2006 Silicon Graphics, Inc.
.\" All rights reserved.
.\"
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" the License, or (at your option) any later version.
.\"
.\" The GNU General Public License's references to "object code"
.\" and "executables" are to be interpreted as the output of any
.\" document formatting or typesetting system, including
.\" intermediate and printed output.
.\"
.\" This manual is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
.\" License along with this manual.  If not, see
.\" <http://www.gnu.org/licenses/>.
.\"
.TH ATTR_REMOVE 3 "Extended Attributes" "Dec 2001" "XFS Compatibility API"
.SH NAME
attr_remove, attr_removef \- remove a user attribute of a filesystem object
.SH C SYNOPSIS
.PP
.sp
.nf
.B #include <attr/attributes.h>
.sp
.B "int attr_remove (const char *\f2path\f3, const char *\f2attrname\f3, int \f2flags\f3);"
.PP
.B "int attr_removef (int \f2fd\f3, const char *\f2attrname\f3, int \f2flags\f3);"
.Op
.SH DESCRIPTION
The
.B attr_remove
and
.B attr_removef
functions provide a way to remove previously created attributes
from filesystem objects.
.P
.I Path\^
points to a path name for a filesystem object, and
.I fd\^
refers to the file descriptor associated with a file.
If the attribute
.I attrname
exists, the attribute name and value will be removed from the
filesystem object.
The
.I flags
argument can contain the following symbols bitwise OR\'ed together:
.TP
.SM
\%ATTR_ROOT
Look for
.I attrname
in the
.B root
address space, not in the
.B user
address space.
(limited to use by super-user only)
.TP
.SM
\%ATTR_DONTFOLLOW
Do not follow symbolic links when resolving a
.I path
on an
.B attr_remove
function call.
The default is to follow symbolic links.
.PP
.B attr_remove
will fail if one or more of the following are true:
.TP 17
.SM
\%[ENOATTR]
The attribute name given is not associated with the indicated
filesystem object.
.TP
.SM
\%[ENOENT]
The named file does not exist.
.TP
.SM
\%[EPERM]
The effective user
.SM ID
does not match the owner of the file
and the effective user
.SM ID
is not super-user.
.TP
.SM
\%[ENOTDIR]
A component of the
path prefix
is not a directory.
.TP
.SM
\%[EACCES]
Search permission is denied on a
component of the
path prefix.
.TP
.SM
\%[EINVAL]
A bit was set in the
.I flag
argument that is not defined for this system call.
.TP
.SM
\%[EFAULT]
.I Path
points outside the allocated address space of the process.
.TP
.SM
\%[ELOOP]
A path name lookup involved too many symbolic links.
.TP
.SM
\%[ENAMETOOLONG]
The length of
.I path
exceeds
.SM
.RI { MAXPATHLEN },
or a pathname component is longer than
.SM
.RI { MAXNAMELEN }.
.PP
.B attr_removef\^
will fail if:
.TP 15
.SM
\%[ENOATTR]
The attribute name given is not associated with the indicated
filesystem object.
.TP
.SM
\%[EINVAL]
A bit was set in the
.I flag
argument that is not defined for this system call,
or
.I fd\^
refers to a socket, not a file.
.TP
.SM
\%[EFAULT]
.I Attrname
points outside the allocated address space of the process.
.TP
.SM
\%[EBADF]
.I Fd\^
does not refer to a valid descriptor.
.SH "DIAGNOSTICS"
On success, zero is returned.  On error, \-1 is returned, and
.I errno
is set appropriately.
.SH "SEE ALSO"
.BR attr (1),
.BR attr_get (3),
.BR attr_list (3),
.BR attr_multi (3),
.BR attr_set (3)