120253Sjoerg/*- 2330449Seadler * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3330449Seadler * 420302Sjoerg * Copyright (C) 1996 520302Sjoerg * David L. Nugent. All rights reserved. 620253Sjoerg * 720253Sjoerg * Redistribution and use in source and binary forms, with or without 820253Sjoerg * modification, are permitted provided that the following conditions 920253Sjoerg * are met: 1020253Sjoerg * 1. Redistributions of source code must retain the above copyright 1120302Sjoerg * notice, this list of conditions and the following disclaimer. 1220253Sjoerg * 2. Redistributions in binary form must reproduce the above copyright 1320253Sjoerg * notice, this list of conditions and the following disclaimer in the 1420253Sjoerg * documentation and/or other materials provided with the distribution. 1520253Sjoerg * 1620302Sjoerg * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 1720253Sjoerg * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1820253Sjoerg * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1920302Sjoerg * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 2020253Sjoerg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2120253Sjoerg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2220253Sjoerg * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2320253Sjoerg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2420253Sjoerg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2520253Sjoerg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2620253Sjoerg * SUCH DAMAGE. 2720253Sjoerg */ 2820253Sjoerg 2930259Scharnier#ifndef lint 3030259Scharnierstatic const char rcsid[] = 3150479Speter "$FreeBSD: stable/11/usr.sbin/pw/cpdir.c 330449 2018-03-05 07:26:05Z eadler $"; 3230259Scharnier#endif /* not lint */ 3330259Scharnier 34286201Sbapt#include <dirent.h> 3530259Scharnier#include <err.h> 3630259Scharnier#include <errno.h> 3730259Scharnier#include <fcntl.h> 3820253Sjoerg#include <string.h> 3930259Scharnier#include <unistd.h> 4020253Sjoerg 41219408Sjkim#include "pw.h" 4220253Sjoerg 4320253Sjoergvoid 44285430Sbaptcopymkdir(int rootfd, char const * dir, int skelfd, mode_t mode, uid_t uid, 45285430Sbapt gid_t gid, int flags) 4620253Sjoerg{ 47285430Sbapt char *p, lnk[MAXPATHLEN], copybuf[4096]; 48285430Sbapt int len, homefd, srcfd, destfd; 49285430Sbapt ssize_t sz; 50285430Sbapt struct stat st; 51285430Sbapt struct dirent *e; 52285430Sbapt DIR *d; 5320253Sjoerg 54285430Sbapt if (*dir == '/') 55285430Sbapt dir++; 56285430Sbapt 57285430Sbapt if (mkdirat(rootfd, dir, mode) != 0 && errno != EEXIST) { 5830259Scharnier warn("mkdir(%s)", dir); 59285430Sbapt return; 60285430Sbapt } 61285430Sbapt fchownat(rootfd, dir, uid, gid, AT_SYMLINK_NOFOLLOW); 62285430Sbapt if (flags > 0) 63285430Sbapt chflagsat(rootfd, dir, flags, AT_SYMLINK_NOFOLLOW); 6420253Sjoerg 65285430Sbapt if (skelfd == -1) 66285430Sbapt return; 6720253Sjoerg 68285430Sbapt homefd = openat(rootfd, dir, O_DIRECTORY); 69285430Sbapt if ((d = fdopendir(skelfd)) == NULL) { 70285430Sbapt close(skelfd); 71285430Sbapt close(homefd); 72285430Sbapt return; 73285430Sbapt } 7420253Sjoerg 75285430Sbapt while ((e = readdir(d)) != NULL) { 76285430Sbapt if (strcmp(e->d_name, ".") == 0 || strcmp(e->d_name, "..") == 0) 77285430Sbapt continue; 7820253Sjoerg 79285430Sbapt p = e->d_name; 80285430Sbapt if (fstatat(skelfd, p, &st, AT_SYMLINK_NOFOLLOW) == -1) 81285430Sbapt continue; 8220253Sjoerg 83285430Sbapt if (strncmp(p, "dot.", 4) == 0) /* Conversion */ 84285430Sbapt p += 3; 8520253Sjoerg 86285430Sbapt if (S_ISDIR(st.st_mode)) { 87285430Sbapt copymkdir(homefd, p, openat(skelfd, e->d_name, O_DIRECTORY), 88285430Sbapt st.st_mode & _DEF_DIRMODE, uid, gid, st.st_flags); 89285430Sbapt continue; 9020253Sjoerg } 91285430Sbapt 92285430Sbapt if (S_ISLNK(st.st_mode) && 93285430Sbapt (len = readlinkat(skelfd, e->d_name, lnk, sizeof(lnk) -1)) 94285430Sbapt != -1) { 95285430Sbapt lnk[len] = '\0'; 96285430Sbapt symlinkat(lnk, homefd, p); 97285430Sbapt fchownat(homefd, p, uid, gid, AT_SYMLINK_NOFOLLOW); 98285430Sbapt continue; 9920253Sjoerg } 100285430Sbapt 101285430Sbapt if (!S_ISREG(st.st_mode)) 102285430Sbapt continue; 103285430Sbapt 104285430Sbapt if ((srcfd = openat(skelfd, e->d_name, O_RDONLY)) == -1) 105285430Sbapt continue; 106285430Sbapt destfd = openat(homefd, p, O_RDWR | O_CREAT | O_EXCL, 107285430Sbapt st.st_mode); 108285430Sbapt if (destfd == -1) { 109285430Sbapt close(srcfd); 110285430Sbapt continue; 111285430Sbapt } 112285430Sbapt 113285430Sbapt while ((sz = read(srcfd, copybuf, sizeof(copybuf))) > 0) 114285430Sbapt write(destfd, copybuf, sz); 115285430Sbapt 116285430Sbapt close(srcfd); 117285430Sbapt /* 118285430Sbapt * Propagate special filesystem flags 119285430Sbapt */ 120285430Sbapt fchown(destfd, uid, gid); 121285430Sbapt fchflags(destfd, st.st_flags); 122285430Sbapt close(destfd); 12320253Sjoerg } 124285430Sbapt closedir(d); 12520253Sjoerg} 126