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 28 static const char rcsid[] = 29 "$FreeBSD$"; 30 #endif /* not lint */ 31 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <sys/types.h> 36 #include <sys/stat.h> 37 #include <sys/param.h> 38 #include <unistd.h> 39 #include <dirent.h> 40 41 #include "pwupd.h" 42 43 void 44 rm_r(char const * dir, uid_t uid) 45 { 46 DIR *d = opendir(dir); 47 48 if (d != NULL) { 49 struct dirent *e; 50 struct stat st; 51 char file[MAXPATHLEN]; 52 53 while ((e = readdir(d)) != NULL) { 54 if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0) { 55 sprintf(file, "%s/%s", dir, e->d_name); 56 if (lstat(file, &st) == 0) { /* Need symlinks, not 57 * linked file */ 58 if (S_ISDIR(st.st_mode)) /* Directory - recurse */ 59 rm_r(file, uid); 60 else { 61 if (S_ISLNK(st.st_mode) || st.st_uid == uid) 62 remove(file); 63 } 64 } 65 } 66 } 67 closedir(d); 68 if (lstat(dir, &st) == 0) { 69 if (S_ISLNK(st.st_mode)) 70 remove(dir); 71 else if (st.st_uid == uid) 72 rmdir(dir); 73 } 74 } 75 } 76