1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1996 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.\" $FreeBSD$ 30.\" 31.Dd July 21, 2019 32.Dt VOP_PATHCONF 9 33.Os 34.Sh NAME 35.Nm VOP_PATHCONF 36.Nd return POSIX pathconf information 37.Sh SYNOPSIS 38.In sys/param.h 39.In sys/vnode.h 40.In sys/unistd.h 41.Ft int 42.Fn VOP_PATHCONF "struct vnode *vp" "int name" "long *retval" 43.Sh DESCRIPTION 44The arguments are: 45.Bl -tag -width retval 46.It Fa vp 47The vnode to get information about. 48.It Fa name 49The type of information to return. 50.It Fa retval 51The place to return the information. 52.El 53.Pp 54The value of 55.Fa name 56specifies what should be returned: 57.Bl -tag -width _PC_CHOWN_RESTRICTED 58.It Dv _PC_LINK_MAX 59The maximum number of links to a file. 60.It Dv _PC_NAME_MAX 61The maximum number of bytes in a file name. 62.It Dv _PC_PATH_MAX 63The maximum number of bytes in a pathname. 64.It Dv _PC_PIPE_BUF 65The maximum number of bytes which will be written atomically to a pipe. 66.It Dv _PC_CHOWN_RESTRICTED 67Return 1 if appropriate privileges are required for the 68.Xr chown 2 69system call, otherwise 0. 70.It Dv _PC_NO_TRUNC 71Return 1 if file names longer than 72.Dv KERN_NAME_MAX 73are truncated. 74.El 75.Sh RETURN VALUES 76If 77.Fa name 78is recognized, 79.Fa *retval 80is set to the specified value and zero is returned, otherwise 81.Er EINVAL 82is returned. 83.Sh SEE ALSO 84.Xr pathconf 2 , 85.Xr vnode 9 86.Sh AUTHORS 87This manual page was written by 88.An Doug Rabson . 89