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/*
* cook - file construction tool
* Copyright (C) 1999, 2001 Peter Miller;
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* MANIFEST: functions to find the home directory
*/
#include <ac/stddef.h>
#include <ac/stdlib.h>
#include <ac/unistd.h>
#include <sys/types.h>
#include <pwd.h>
#include <env.h>
#include <home_directo.h>
#include <mem.h>
const char *
home_directory()
{
static const char *result;
struct passwd *pw;
/*
* If we already worked this out,
* just use the old answer.
*/
if (result)
return result;
/*
* If the HOME environment variable is set,
* use that.
*/
result = getenv("HOME");
if (result)
return result;
/*
* Otherwise, read the passwd file for our current user ID.
* And if that fails, just use root.
*/
setpwent();
pw = getpwuid(geteuid());
result = (pw && pw->pw_dir) ? mem_copy_string(pw->pw_dir) : "/";
endpwent();
/*
* Export this HOME environment variable to child processes.
*/
env_set("HOME", result);
return result;
}
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