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/* vi: set sw=4 ts=4: */
/* getusershell and friends for uClibc
*
* Copyright (C) 2002 by Robert Griebl <griebl@gmx.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library 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 Library General Public License
* for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <unistd.h>
/* Rely on the .bss to zero these */
static FILE *fp;
static int isopen;
static char **cursh;
static char *validsh [] = { "/bin/sh", "/bin/csh", 0 };
void endusershell ( void )
{
if ( fp && isopen )
fclose ( fp );
isopen = 0;
}
void setusershell ( void )
{
if ( isopen )
endusershell ( );
fp = fopen ( "/etc/shells", "r" );
cursh = validsh;
isopen = 1;
}
char *getusershell ( void )
{
char line [BUFSIZ];
if ( !isopen )
setusershell ( );
if ( fp ) {
return fgets ( line, sizeof( line ) - 1, fp );
} else {
char *result = *cursh;
if ( result )
cursh++;
return result;
}
}
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