2008-12-07 03:33:36 +00:00
|
|
|
.\"
|
|
|
|
|
.\" Copyright (c) 2008 Peter Wemm
|
|
|
|
|
.\" All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
|
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
.\" SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
2015-05-27 17:51:06 +00:00
|
|
|
.Dd May 27, 2015
|
2008-12-07 03:33:36 +00:00
|
|
|
.Dt KINFO_GETFILE 3
|
2010-04-14 19:08:06 +00:00
|
|
|
.Os
|
2008-12-07 03:33:36 +00:00
|
|
|
.Sh NAME
|
|
|
|
|
.Nm kinfo_getfile
|
|
|
|
|
.Nd function for getting per-process file descriptor information
|
|
|
|
|
.Sh LIBRARY
|
|
|
|
|
.Lb libutil
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.In sys/types.h
|
2015-05-27 17:51:06 +00:00
|
|
|
.In sys/user.h
|
2008-12-07 03:33:36 +00:00
|
|
|
.In libutil.h
|
|
|
|
|
.Ft struct kinfo_file *
|
|
|
|
|
.Fn kinfo_getfile "pid_t pid" "int *cntp"
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
This function is used for obtaining the file descriptor information
|
|
|
|
|
of a particular process.
|
|
|
|
|
.Pp
|
|
|
|
|
The
|
|
|
|
|
.Ar pid
|
|
|
|
|
field contains the process identifier.
|
2010-08-03 17:40:09 +00:00
|
|
|
This should be the a process that you have privilege to access.
|
2008-12-07 03:33:36 +00:00
|
|
|
The
|
|
|
|
|
.Ar cntp
|
2014-05-03 16:18:42 +00:00
|
|
|
field allows the caller to know how many records are returned.
|
2008-12-07 03:33:36 +00:00
|
|
|
.Pp
|
|
|
|
|
This function is a wrapper around
|
|
|
|
|
.Xr sysctl 3
|
|
|
|
|
with the
|
|
|
|
|
.Dv KERN_PROC_FILEDESC
|
|
|
|
|
mib.
|
|
|
|
|
While the kernel returns a packed structure, this function expands the
|
|
|
|
|
data into a fixed record format.
|
|
|
|
|
.Sh RETURN VALUES
|
2009-06-12 18:13:34 +00:00
|
|
|
On success the
|
2008-12-07 03:33:36 +00:00
|
|
|
.Fn kinfo_getfile
|
|
|
|
|
function returns a pointer to an array of
|
|
|
|
|
.Vt struct kinfo_file
|
2009-06-15 15:43:00 +00:00
|
|
|
structures as defined by
|
|
|
|
|
.In sys/user.h .
|
2008-12-07 03:33:36 +00:00
|
|
|
The array was obtained by an internal call to
|
|
|
|
|
.Xr malloc 3
|
|
|
|
|
and must be freed by the caller with a call to
|
|
|
|
|
.Xr free 3 .
|
2009-06-12 18:13:34 +00:00
|
|
|
On failure the
|
|
|
|
|
.Fn kinfo_getfile
|
|
|
|
|
function returns
|
|
|
|
|
.Dv NULL .
|
2008-12-07 03:33:36 +00:00
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr free 3 ,
|
|
|
|
|
.Xr kinfo_getvmmap 3 ,
|
|
|
|
|
.Xr malloc 3 ,
|
|
|
|
|
.Xr sysctl 3
|
2020-06-14 05:35:02 +00:00
|
|
|
.Sh HISTORY
|
|
|
|
|
The
|
|
|
|
|
.Fn kinfo_getfile
|
|
|
|
|
function first appeared in
|
|
|
|
|
.Fx 7.0 .
|
