mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
70 lines
2.6 KiB
Groff
70 lines
2.6 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. 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.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
.\"
|
|
.\" From: @(#)gethostname.3 8.1 (Berkeley) 6/4/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd September 23, 1994
|
|
.Dt GETBOOTFILE 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm getbootfile
|
|
.Nd get kernel boot file name
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In paths.h
|
|
.Ft const char *
|
|
.Fn getbootfile void
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn getbootfile
|
|
function retrieves the full pathname of the file from which the
|
|
current kernel was loaded, and returns a static pointer to the name.
|
|
A read/write interface to this information is available via the
|
|
.Xr sysctl 3
|
|
MIB variable
|
|
.Dq Li kern.bootfile .
|
|
.Sh RETURN VALUES
|
|
If the call succeeds a string giving the pathname is returned.
|
|
If it
|
|
fails, a null pointer is returned and an error code is
|
|
placed in the global location
|
|
.Va errno .
|
|
.Sh SEE ALSO
|
|
.Xr sysctl 3
|
|
.Sh HISTORY
|
|
The
|
|
.Fn getbootfile
|
|
function appeared in
|
|
.Fx 2.0 .
|
|
.Sh BUGS
|
|
If the boot blocks have not been modified to pass this information into
|
|
the kernel at boot time, the static string
|
|
.Dq Pa /boot/kernel/kernel
|
|
is returned instead of the real boot file.
|