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.\" Copyright 2020 Scott Long
.\" Copyright 2020 Stefan Eßer
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.Dd November 18, 2020
.Dt GETLOCALBASE 3
.Os
.Sh NAME
.Nm getlocalbase
.Nd "return the path to the local software directory"
.Sh LIBRARY
.Lb libutil
.Sh SYNOPSIS
.In libutil.h
.Ft const char*
.Fn getlocalbase "void"
.Sh DESCRIPTION
The
.Fn getlocalbase
function returns the path to the local software base directory.
Normally this is the
.Pa /usr/local
directory.
First the
.Ev LOCALBASE
environment variable is checked.
If that does not exist then the
.Va user.localbase
sysctl is checked.
If that also does not exist then the value of the
.Dv _PATH_LOCALBASE
compile-time variable is used.
If that is undefined then the default of
.Pa /usr/local
is used.
.Pp
The value returned by the
.Fn getlocalbase
function shall not be modified.
.Sh IMPLEMENTATION NOTES
Calls to
.Fn getlocalbase
will perform a setugid check on the running binary before checking the
environment.
.Sh RETURN VALUES
The
.Fn getlocalbase
function always succeeds and returns a pointer to a string, whose length
may exceed MAXPATHLEN if it has been derived from the environment variable
LOCALBASE.
No length checks are performed on the result.
.Sh ENVIRONMENT
The
.Fn getlocalbase
library function retrieves the
.Ev LOCALBASE
environment variable.
.Sh ERRORS
The
.Fn getlocalbase
function always succeeds.
.Sh SEE ALSO
.Xr env 1 ,
.Xr src.conf 5 ,
.Xr sysctl 8
.Sh HISTORY
The
.Nm
library function first appeared in
.Fx 13.0 .
.Sh AUTHORS
This
manual page was written by
.An Scott Long Aq Mt scottl@FreeBSD.org and Stefan Eßer Aq Mt se@FreeBSD.org .