/*
 * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * 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.
 * 
 * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <dirent.h>

#include <err.h>

#ifdef RCSID
RCSID("$Id: rm-rf.c,v 1.2 2003/07/15 23:17:01 shadow Exp $");
#endif

static void
  kill_one(const char *filename);

static void
  kill_dir(const char *dirname);

static void
  do_dir(const char *dirname);

static void
kill_one(const char *filename)
{
    int ret;

    ret = unlink(filename);
    if (ret < 0) {
	if (errno == EISDIR || errno == EPERM)
	    do_dir(filename);
	else
	    err(1, "unlink %s", filename);
    }
}

static void
do_dir(const char *dirname)
{
    int ret;

    ret = fs_rmmount(dirname);
    if (ret == 0)
	return;

    ret = chdir(dirname);
    if (ret < 0)
	err(1, "chdir %s", dirname);
    kill_dir(dirname);
    ret = chdir("..");
    if (ret < 0)
	err(1, "chdir ..");
    ret = rmdir(dirname);
    if (ret < 0)
	err(1, "rmdir %s", dirname);
}

static void
kill_dir(const char *dirname)
{
    DIR *dir;
    struct dirent *dp;

    dir = opendir(".");
    if (dir == NULL)
	err(1, "opendir %s", dirname);
    while ((dp = readdir(dir)) != NULL) {
	if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
	    continue;

	kill_one(dp->d_name);
    }
    closedir(dir);
}

int
main(int argc, char **argv)
{

    if (argc < 2)
	errx(1, "usage: %s directory [...]", argv[0]);
    while (argc >= 2) {
	do_dir(argv[1]);
	argc--;
	argv++;
    }
    return 0;
}
