1d6f907dcSJoerg Wunsch /*- 2ad7cf975SJoerg Wunsch * Copyright (C) 1996 3ad7cf975SJoerg Wunsch * David L. Nugent. All rights reserved. 4d6f907dcSJoerg Wunsch * 5d6f907dcSJoerg Wunsch * Redistribution and use in source and binary forms, with or without 6d6f907dcSJoerg Wunsch * modification, are permitted provided that the following conditions 7d6f907dcSJoerg Wunsch * are met: 8d6f907dcSJoerg Wunsch * 1. Redistributions of source code must retain the above copyright 9ad7cf975SJoerg Wunsch * notice, this list of conditions and the following disclaimer. 10d6f907dcSJoerg Wunsch * 2. Redistributions in binary form must reproduce the above copyright 11d6f907dcSJoerg Wunsch * notice, this list of conditions and the following disclaimer in the 12d6f907dcSJoerg Wunsch * documentation and/or other materials provided with the distribution. 13d6f907dcSJoerg Wunsch * 14ad7cf975SJoerg Wunsch * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15d6f907dcSJoerg Wunsch * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16d6f907dcSJoerg Wunsch * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17ad7cf975SJoerg Wunsch * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18d6f907dcSJoerg Wunsch * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19d6f907dcSJoerg Wunsch * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20d6f907dcSJoerg Wunsch * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21d6f907dcSJoerg Wunsch * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22d6f907dcSJoerg Wunsch * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23d6f907dcSJoerg Wunsch * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24d6f907dcSJoerg Wunsch * SUCH DAMAGE. 25d6f907dcSJoerg Wunsch */ 26d6f907dcSJoerg Wunsch 271dcc6ec7SPhilippe Charnier #ifndef lint 281dcc6ec7SPhilippe Charnier static const char rcsid[] = 2997d92980SPeter Wemm "$FreeBSD$"; 301dcc6ec7SPhilippe Charnier #endif /* not lint */ 311dcc6ec7SPhilippe Charnier 32d6f907dcSJoerg Wunsch #include <sys/stat.h> 33*796ba6fcSBaptiste Daroussin 34d6f907dcSJoerg Wunsch #include <dirent.h> 35ee8c5d14SBaptiste Daroussin #include <fcntl.h> 36*796ba6fcSBaptiste Daroussin #include <string.h> 37*796ba6fcSBaptiste Daroussin #include <unistd.h> 38d6f907dcSJoerg Wunsch 39d6f907dcSJoerg Wunsch #include "pwupd.h" 40d6f907dcSJoerg Wunsch 41d6f907dcSJoerg Wunsch void 42ee8c5d14SBaptiste Daroussin rm_r(int rootfd, const char *path, uid_t uid) 43d6f907dcSJoerg Wunsch { 44ee8c5d14SBaptiste Daroussin int dirfd; 45ee8c5d14SBaptiste Daroussin DIR *d; 46d6f907dcSJoerg Wunsch struct dirent *e; 47d6f907dcSJoerg Wunsch struct stat st; 48d6f907dcSJoerg Wunsch 49ee8c5d14SBaptiste Daroussin if (*path == '/') 50ee8c5d14SBaptiste Daroussin path++; 51ee8c5d14SBaptiste Daroussin 52ee8c5d14SBaptiste Daroussin dirfd = openat(rootfd, path, O_DIRECTORY); 53ee8c5d14SBaptiste Daroussin 54ee8c5d14SBaptiste Daroussin d = fdopendir(dirfd); 55d6f907dcSJoerg Wunsch while ((e = readdir(d)) != NULL) { 56ee8c5d14SBaptiste Daroussin if (strcmp(e->d_name, ".") == 0 || strcmp(e->d_name, "..") == 0) 57ee8c5d14SBaptiste Daroussin continue; 58ee8c5d14SBaptiste Daroussin 59ee8c5d14SBaptiste Daroussin if (fstatat(dirfd, e->d_name, &st, AT_SYMLINK_NOFOLLOW) != 0) 60ee8c5d14SBaptiste Daroussin continue; 61ee8c5d14SBaptiste Daroussin if (S_ISDIR(st.st_mode)) 62ee8c5d14SBaptiste Daroussin rm_r(dirfd, e->d_name, uid); 63ee8c5d14SBaptiste Daroussin else if (S_ISLNK(st.st_mode) || st.st_uid == uid) 64ee8c5d14SBaptiste Daroussin unlinkat(dirfd, e->d_name, 0); 65d6f907dcSJoerg Wunsch } 66d6f907dcSJoerg Wunsch closedir(d); 67ee8c5d14SBaptiste Daroussin if (fstatat(rootfd, path, &st, AT_SYMLINK_NOFOLLOW) != 0) 68ee8c5d14SBaptiste Daroussin return; 69ee8c5d14SBaptiste Daroussin unlinkat(rootfd, path, S_ISDIR(st.st_mode) ? AT_REMOVEDIR : 0); 70d6f907dcSJoerg Wunsch } 71