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VOP_PATHCONF.9 (29966) VOP_PATHCONF.9 (34504)
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.\"
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.\" $Id: VOP_PATHCONF.9,v 1.3 1997/04/13 14:48:56 bde Exp $
29.\" $Id: VOP_PATHCONF.9,v 1.4 1997/09/29 10:10:54 wosch Exp $
30.\"
31.Dd July 24, 1996
32.Os
33.Dt VOP_PATHCONF 9
34.Sh NAME
35.Nm VOP_PATHCONF
36.Nd return POSIX pathconf information
37.Sh SYNOPSIS
38.Fd #include <sys/param.h>
39.Fd #include <sys/vnode.h>
40.Fd #include <sys/unistd.h>
41.Ft int
42.Fn VOP_PATHCONF "struct vnode *vp" "int name" "int *retval"
43.Sh DESCRIPTION
44.Pp
45The arguments are:
46.Bl -tag -width retval
47.It Ar vp
48the vnode to get information about
49.It Ar name
50the type of information to return
51.It Ar retval
52the place to return the information
53.El
54.Pp
55The value of
56.Fa name
57specifies what should be returned:
58.Bl -tag -width _PC_CHOWN_RESTRICTED
59.It Dv _PC_LINK_MAX
60The maximum number of links to a file.
61.It Dv _PC_NAME_MAX
62The maximum number of bytes in a file name.
63.It Dv _PC_PATH_MAX
64The maximum number of bytes in a pathname.
65.It Dv _PC_PIPE_BUF
66The maximum number of bytes which will be written atomically to a pipe.
67.It Dv _PC_CHOWN_RESTRICTED
68Return 1 if appropriate privileges are required for the
69.Xr chown 2
70system call, otherwise 0.
71.It Dv _PC_NO_TRUNC
72Return 1 if file names longer than
73.Dv KERN_NAME_MAX
74are truncated.
75.El
76.Sh RETURN VALUES
77If
78.Fa name
79is recognized,
80.Fa *retval
81is set to the specified value and zero is returned, otherwise
82.Dv EINVAL
83is returned.
84.Sh SEE ALSO
85.Xr pathconf 2 ,
86.Xr vnode 9
87.Sh AUTHORS
30.\"
31.Dd July 24, 1996
32.Os
33.Dt VOP_PATHCONF 9
34.Sh NAME
35.Nm VOP_PATHCONF
36.Nd return POSIX pathconf information
37.Sh SYNOPSIS
38.Fd #include <sys/param.h>
39.Fd #include <sys/vnode.h>
40.Fd #include <sys/unistd.h>
41.Ft int
42.Fn VOP_PATHCONF "struct vnode *vp" "int name" "int *retval"
43.Sh DESCRIPTION
44.Pp
45The arguments are:
46.Bl -tag -width retval
47.It Ar vp
48the vnode to get information about
49.It Ar name
50the type of information to return
51.It Ar retval
52the place to return the information
53.El
54.Pp
55The value of
56.Fa name
57specifies what should be returned:
58.Bl -tag -width _PC_CHOWN_RESTRICTED
59.It Dv _PC_LINK_MAX
60The maximum number of links to a file.
61.It Dv _PC_NAME_MAX
62The maximum number of bytes in a file name.
63.It Dv _PC_PATH_MAX
64The maximum number of bytes in a pathname.
65.It Dv _PC_PIPE_BUF
66The maximum number of bytes which will be written atomically to a pipe.
67.It Dv _PC_CHOWN_RESTRICTED
68Return 1 if appropriate privileges are required for the
69.Xr chown 2
70system call, otherwise 0.
71.It Dv _PC_NO_TRUNC
72Return 1 if file names longer than
73.Dv KERN_NAME_MAX
74are truncated.
75.El
76.Sh RETURN VALUES
77If
78.Fa name
79is recognized,
80.Fa *retval
81is set to the specified value and zero is returned, otherwise
82.Dv EINVAL
83is returned.
84.Sh SEE ALSO
85.Xr pathconf 2 ,
86.Xr vnode 9
87.Sh AUTHORS
88This man page was written by Doug Rabson.
89
88This man page was written by
89.An Doug Rabson .