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 * $FreeBSD: src/usr.sbin/pw/rm_r.c,v 1.5.2.1 2001/07/30 10:19:54 dd Exp $ 27 * $DragonFly: src/usr.sbin/pw/rm_r.c,v 1.2 2003/06/17 04:30:02 dillon Exp $ 28 */ 29 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <string.h> 33 #include <sys/types.h> 34 #include <sys/stat.h> 35 #include <sys/param.h> 36 #include <unistd.h> 37 #include <dirent.h> 38 39 #include "pwupd.h" 40 41 void 42 rm_r(char const * dir, uid_t uid) 43 { 44 DIR *d = opendir(dir); 45 46 if (d != NULL) { 47 struct dirent *e; 48 struct stat st; 49 char file[MAXPATHLEN]; 50 51 while ((e = readdir(d)) != NULL) { 52 if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0) { 53 sprintf(file, "%s/%s", dir, e->d_name); 54 if (lstat(file, &st) == 0) { /* Need symlinks, not 55 * linked file */ 56 if (S_ISDIR(st.st_mode)) /* Directory - recurse */ 57 rm_r(file, uid); 58 else { 59 if (S_ISLNK(st.st_mode) || st.st_uid == uid) 60 remove(file); 61 } 62 } 63 } 64 } 65 closedir(d); 66 if (lstat(dir, &st) == 0) { 67 if (S_ISLNK(st.st_mode)) 68 remove(dir); 69 else if (st.st_uid == uid) 70 rmdir(dir); 71 } 72 } 73 } 74