1.\" Copyright (c) 1996 Doug Rabson 2.\" 3.\" All rights reserved. 4.\" 5.\" This program is free software. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 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.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/share/man/man9/VOP_PATHCONF.9,v 1.6.2.3 2001/12/17 11:30:18 ru Exp $ 28.\" 29.Dd July 24, 1996 30.Dt VOP_PATHCONF 9 31.Os 32.Sh NAME 33.Nm VOP_PATHCONF 34.Nd return POSIX pathconf information 35.Sh SYNOPSIS 36.In sys/param.h 37.In sys/vnode.h 38.In sys/unistd.h 39.Ft int 40.Fn VOP_PATHCONF "struct vnode *vp" "int name" "int *retval" 41.Sh DESCRIPTION 42The arguments are: 43.Bl -tag -width retval 44.It Fa vp 45the vnode to get information about 46.It Fa name 47the type of information to return 48.It Fa retval 49the place to return the information 50.El 51.Pp 52The value of 53.Fa name 54specifies what should be returned: 55.Bl -tag -width ".Dv _PC_CHOWN_RESTRICTED" 56.It Dv _PC_LINK_MAX 57The maximum number of links to a file. 58.It Dv _PC_NAME_MAX 59The maximum number of bytes in a file name. 60.It Dv _PC_PATH_MAX 61The maximum number of bytes in a pathname. 62.It Dv _PC_PIPE_BUF 63The maximum number of bytes which will be written atomically to a pipe. 64.It Dv _PC_CHOWN_RESTRICTED 65Return 1 if appropriate privileges are required for the 66.Xr chown 2 67system call, otherwise 0. 68.It Dv _PC_NO_TRUNC 69Return 1 if file names longer than 70.Dv KERN_NAME_MAX 71are truncated. 72.El 73.Sh RETURN VALUES 74If 75.Fa name 76is recognized, 77.Fa *retval 78is set to the specified value and zero is returned, otherwise 79.Er EINVAL 80is returned. 81.Sh SEE ALSO 82.Xr pathconf 2 , 83.Xr vnode 9 84.Sh AUTHORS 85This man page was written by 86.An Doug Rabson . 87