120253Sjoerg/*- 220302Sjoerg * Copyright (C) 1996 320302Sjoerg * David L. Nugent. All rights reserved. 420253Sjoerg * 520253Sjoerg * Redistribution and use in source and binary forms, with or without 620253Sjoerg * modification, are permitted provided that the following conditions 720253Sjoerg * are met: 820253Sjoerg * 1. Redistributions of source code must retain the above copyright 920302Sjoerg * notice, this list of conditions and the following disclaimer. 1020253Sjoerg * 2. Redistributions in binary form must reproduce the above copyright 1120253Sjoerg * notice, this list of conditions and the following disclaimer in the 1220253Sjoerg * documentation and/or other materials provided with the distribution. 1320253Sjoerg * 1420302Sjoerg * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 1520253Sjoerg * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1620253Sjoerg * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1720302Sjoerg * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 1820253Sjoerg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1920253Sjoerg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2020253Sjoerg * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2120253Sjoerg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2220253Sjoerg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2320253Sjoerg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2420253Sjoerg * SUCH DAMAGE. 2520253Sjoerg */ 2620253Sjoerg 2730259Scharnier#ifndef lint 2830259Scharnierstatic const char rcsid[] = 2950479Speter "$FreeBSD$"; 3030259Scharnier#endif /* not lint */ 3130259Scharnier 32287084Sbapt#include <sys/stat.h> 33287084Sbapt 34287084Sbapt#include <dirent.h> 35287084Sbapt#include <fcntl.h> 3678720Sdd#include <string.h> 3720253Sjoerg#include <unistd.h> 3820253Sjoerg 3920253Sjoerg#include "pwupd.h" 4020253Sjoerg 4120253Sjoergvoid 42287084Sbaptrm_r(int rootfd, const char *path, uid_t uid) 4320253Sjoerg{ 44287084Sbapt int dirfd; 45287084Sbapt DIR *d; 46287084Sbapt struct dirent *e; 47287084Sbapt struct stat st; 4820253Sjoerg 49287084Sbapt if (*path == '/') 50287084Sbapt path++; 5120253Sjoerg 52287084Sbapt dirfd = openat(rootfd, path, O_DIRECTORY); 53303257Sbapt if (dirfd == -1) { 54303257Sbapt return; 55303257Sbapt } 56287084Sbapt 57287084Sbapt d = fdopendir(dirfd); 58287084Sbapt while ((e = readdir(d)) != NULL) { 59287084Sbapt if (strcmp(e->d_name, ".") == 0 || strcmp(e->d_name, "..") == 0) 60287084Sbapt continue; 61287084Sbapt 62287084Sbapt if (fstatat(dirfd, e->d_name, &st, AT_SYMLINK_NOFOLLOW) != 0) 63287084Sbapt continue; 64287084Sbapt if (S_ISDIR(st.st_mode)) 65287084Sbapt rm_r(dirfd, e->d_name, uid); 66287084Sbapt else if (S_ISLNK(st.st_mode) || st.st_uid == uid) 67287084Sbapt unlinkat(dirfd, e->d_name, 0); 6820253Sjoerg } 69287084Sbapt closedir(d); 70287084Sbapt if (fstatat(rootfd, path, &st, AT_SYMLINK_NOFOLLOW) != 0) 71287084Sbapt return; 72287084Sbapt unlinkat(rootfd, path, S_ISDIR(st.st_mode) ? AT_REMOVEDIR : 0); 7320253Sjoerg} 74