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 1.6 2001/06/24 20:25:20 dd Exp $ 27 */ 28 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <string.h> 32 #include <sys/types.h> 33 #include <sys/stat.h> 34 #include <sys/param.h> 35 #include <unistd.h> 36 #include <dirent.h> 37 38 #include "pwupd.h" 39 40 void 41 rm_r(char const * dir, uid_t uid) 42 { 43 DIR *d = opendir(dir); 44 45 if (d != NULL) { 46 struct dirent *e; 47 struct stat st; 48 char file[MAXPATHLEN]; 49 50 while ((e = readdir(d)) != NULL) { 51 if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0) { 52 sprintf(file, "%s/%s", dir, e->d_name); 53 if (lstat(file, &st) == 0) { /* Need symlinks, not 54 * linked file */ 55 if (S_ISDIR(st.st_mode)) /* Directory - recurse */ 56 rm_r(file, uid); 57 else { 58 if (S_ISLNK(st.st_mode) || st.st_uid == uid) 59 remove(file); 60 } 61 } 62 } 63 } 64 closedir(d); 65 if (lstat(dir, &st) == 0) { 66 if (S_ISLNK(st.st_mode)) 67 remove(dir); 68 else if (st.st_uid == uid) 69 rmdir(dir); 70 } 71 } 72 } 73