rm_r.c revision 50479 
1/*-
2 * Copyright (C) 1996
3 *	David L. Nugent.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#ifndef lint
28static const char rcsid[] =
29  "$FreeBSD: head/usr.sbin/pw/rm_r.c 50479 1999-08-28 01:35:59Z peter $";
30#endif /* not lint */
31
32#include <stdio.h>
33#include <stdlib.h>
34#include <sys/types.h>
35#include <sys/stat.h>
36#include <sys/param.h>
37#include <unistd.h>
38#include <dirent.h>
39
40#include "pwupd.h"
41
42void
43rm_r(char const * dir, uid_t uid)
44{
45	DIR            *d = opendir(dir);
46
47	if (d != NULL) {
48		struct dirent  *e;
49		struct stat     st;
50		char            file[MAXPATHLEN];
51
52		while ((e = readdir(d)) != NULL) {
53			if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0) {
54				sprintf(file, "%s/%s", dir, e->d_name);
55				if (lstat(file, &st) == 0) {	/* Need symlinks, not
56								 * linked file */
57					if (S_ISDIR(st.st_mode))	/* Directory - recurse */
58						rm_r(file, uid);
59					else {
60						if (S_ISLNK(st.st_mode) || st.st_uid == uid)
61							remove(file);
62					}
63				}
64			}
65		}
66		closedir(d);
67		if (lstat(dir, &st) == 0) {
68			if (S_ISLNK(st.st_mode))
69				remove(dir);
70			else if (st.st_uid == uid)
71				rmdir(dir);
72		}
73	}
74}
75