1.\"- 2.\" Copyright (c) 1999 Robert N. M. Watson 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD: src/share/man/man9/VOP_ACLCHECK.9,v 1.1.2.3 2001/12/17 11:30:18 ru Exp $ 27.\" $DragonFly: src/share/man/man9/VOP_ACLCHECK.9,v 1.2 2003/06/17 04:37:01 dillon Exp $ 28.\" 29.Dd December 23, 1999 30.Os 31.Dt VOP_ACLCHECK 9 32.Sh NAME 33.Nm VOP_ACLCHECK 34.Nd check an access control list for a vnode 35.Sh SYNOPSIS 36.In sys/param.h 37.In sys/vnode.h 38.In sys/acl.h 39.Ft int 40.Fn VOP_ACLCHECK "struct vnode *vp" "acl_type_t type" "struct acl *aclp" "struct ucred *cred" "struct proc *p" 41.Sh DESCRIPTION 42This vnode call may be used to determine the validity of a particular access 43control list (ACL) for a particular file or directory. 44.Pp 45Its arguments are: 46.Bl -tag -width type 47.It Ar vp 48the vnode of the file or directory 49.It Ar type 50the type of ACL to check 51.It Ar aclp 52a pointer to an ACL structure from which to retrieve the ACL data 53.It Ar cred 54the user credentials to use in authorizing the request 55.It Ar p 56the process checking the ACL 57.El 58.Pp 59The 60.Fa cred 61pointer may be NULL to indicate that access control checks are not to be 62performed, if possible. This cred setting might be used to allow the 63kernel to authorize ACL verification that the active process might not be 64permitted to do. 65.Pp 66The vnode ACL interface defines the syntax, and not semantics, of file and 67directory ACL interfaces. More information about ACL management in kernel 68may be found in 69.Xr acl 9 . 70.Sh LOCKS 71No locks are required to call this vnode method, and any locks held on 72entry will be held on exit. 73.Sh RETURN VALUES 74If the 75.Fa aclp 76pointer points to a valid ACL of type 77.Fa type 78for the object 79.Fa vp , 80then zero is returned. Otherwise, an appropriate error code is returned. 81.Sh ERRORS 82.Bl -tag -width Er 83.It Bq Er EINVAL 84The ACL type passed is invalid for this vnode, or the ACL data is invalid 85.It Bq Er EACCES 86Permission denied 87.It Bq Er ENOMEM 88Insufficient memory available to fulfill request 89.It Bq Er EOPNOTSUPP 90The file system does not support VOP_ACLCHECK 91.El 92.Sh SEE ALSO 93.Xr acl 9 , 94.Xr vnode 9 , 95.Xr VOP_GETACL 9 , 96.Xr VOP_SETACL 9 97.Sh AUTHORS 98This man page was written by 99.An Robert Watson . 100