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.\" $DragonFly: src/share/man/man9/VOP_PATHCONF.9,v 1.4 2004/06/01 11:36:53 hmp Exp $ 29.\" 30.Dd July 24, 1996 31.Os 32.Dt VOP_PATHCONF 9 33.Sh NAME 34.Nm VOP_PATHCONF 35.Nd return POSIX pathconf information 36.Sh SYNOPSIS 37.In sys/param.h 38.In sys/vnode.h 39.In sys/unistd.h 40.Ft int 41.Fn VOP_PATHCONF "struct vnode *vp" "int name" "int *retval" 42.Sh DESCRIPTION 43The arguments are: 44.Bl -tag -width retval 45.It Fa vp 46the vnode to get information about 47.It Fa name 48the type of information to return 49.It Fa retval 50the place to return the information 51.El 52.Pp 53The value of 54.Fa name 55specifies what should be returned: 56.Bl -tag -width _PC_CHOWN_RESTRICTED 57.It Dv _PC_LINK_MAX 58The maximum number of links to a file. 59.It Dv _PC_NAME_MAX 60The maximum number of bytes in a file name. 61.It Dv _PC_PATH_MAX 62The maximum number of bytes in a pathname. 63.It Dv _PC_PIPE_BUF 64The maximum number of bytes which will be written atomically to a pipe. 65.It Dv _PC_CHOWN_RESTRICTED 66Return 1 if appropriate privileges are required for the 67.Xr chown 2 68system call, otherwise 0. 69.It Dv _PC_NO_TRUNC 70Return 1 if file names longer than 71.Dv KERN_NAME_MAX 72are truncated. 73.El 74.Sh RETURN VALUES 75If 76.Fa name 77is recognized, 78.Fa *retval 79is set to the specified value and zero is returned, otherwise 80.Er EINVAL 81is returned. 82.Sh SEE ALSO 83.Xr pathconf 2 , 84.Xr vnode 9 85.Sh AUTHORS 86This man page was written by 87.An Doug Rabson . 88