cpdir.c revision 144841
11573Srgrimes/*- 21573Srgrimes * Copyright (C) 1996 31573Srgrimes * David L. Nugent. All rights reserved. 41573Srgrimes * 51573Srgrimes * Redistribution and use in source and binary forms, with or without 61573Srgrimes * modification, are permitted provided that the following conditions 71573Srgrimes * are met: 81573Srgrimes * 1. Redistributions of source code must retain the above copyright 91573Srgrimes * notice, this list of conditions and the following disclaimer. 101573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111573Srgrimes * notice, this list of conditions and the following disclaimer in the 121573Srgrimes * documentation and/or other materials provided with the distribution. 131573Srgrimes * 141573Srgrimes * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 151573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 161573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 171573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 181573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 191573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 201573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 211573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 221573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 231573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 241573Srgrimes * SUCH DAMAGE. 251573Srgrimes */ 261573Srgrimes 271573Srgrimes#ifndef lint 281573Srgrimesstatic const char rcsid[] = 291573Srgrimes "$FreeBSD: head/usr.sbin/pw/cpdir.c 144841 2005-04-09 14:59:10Z stefanf $"; 301573Srgrimes#endif /* not lint */ 311573Srgrimes 321573Srgrimes#include <err.h> 3390041Sobrien#include <errno.h> 3490041Sobrien#include <fcntl.h> 351573Srgrimes#include <stdio.h> 361573Srgrimes#include <string.h> 371573Srgrimes#include <stdlib.h> 381573Srgrimes#include <unistd.h> 391573Srgrimes#include <sys/types.h> 401573Srgrimes#include <sys/stat.h> 411573Srgrimes#include <sys/param.h> 421573Srgrimes#include <dirent.h> 431573Srgrimes 441573Srgrimes#include "pwupd.h" 451573Srgrimes 461573Srgrimesvoid 4790041Sobriencopymkdir(char const * dir, char const * skel, mode_t mode, uid_t uid, gid_t gid) 481573Srgrimes{ 491573Srgrimes char src[MAXPATHLEN]; 501573Srgrimes char dst[MAXPATHLEN]; 511573Srgrimes 521573Srgrimes if (mkdir(dir, mode) != 0 && errno != EEXIST) { 531573Srgrimes warn("mkdir(%s)", dir); 541573Srgrimes } else { 551573Srgrimes int infd, outfd; 561573Srgrimes struct stat st; 571573Srgrimes 58 static char counter = 0; 59 static char *copybuf = NULL; 60 61 ++counter; 62 chown(dir, uid, gid); 63 if (skel != NULL && *skel != '\0') { 64 DIR *d = opendir(skel); 65 66 if (d != NULL) { 67 struct dirent *e; 68 69 while ((e = readdir(d)) != NULL) { 70 char *p = e->d_name; 71 72 if (snprintf(src, sizeof(src), "%s/%s", skel, p) >= (int)sizeof(src)) 73 warn("warning: pathname too long '%s/%s' (skel not copied)", skel, p); 74 else if (stat(src, &st) == 0) { 75 if (strncmp(p, "dot.", 4) == 0) /* Conversion */ 76 p += 3; 77 if (snprintf(dst, sizeof(dst), "%s/%s", dir, p) >= (int)sizeof(dst)) 78 warn("warning: path too long '%s/%s' (skel file skipped)", dir, p); 79 else { 80 if (S_ISDIR(st.st_mode)) { /* Recurse for this */ 81 if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0) 82 copymkdir(dst, src, (st.st_mode & 0777), uid, gid); 83 chflags(dst, st.st_flags); /* propogate flags */ 84 /* 85 * Note: don't propogate special attributes 86 * but do propogate file flags 87 */ 88 } else if (S_ISREG(st.st_mode) && (outfd = open(dst, O_RDWR | O_CREAT | O_EXCL, st.st_mode)) != -1) { 89 if ((infd = open(src, O_RDONLY)) == -1) { 90 close(outfd); 91 remove(dst); 92 } else { 93 int b; 94 95 /* 96 * Allocate our copy buffer if we need to 97 */ 98 if (copybuf == NULL) 99 copybuf = malloc(4096); 100 while ((b = read(infd, copybuf, 4096)) > 0) 101 write(outfd, copybuf, b); 102 close(infd); 103 /* 104 * Propogate special filesystem flags 105 */ 106 fchown(outfd, uid, gid); 107 fchflags(outfd, st.st_flags); 108 close(outfd); 109 chown(dst, uid, gid); 110 } 111 } 112 } 113 } 114 } 115 closedir(d); 116 } 117 } 118 if (--counter == 0 && copybuf != NULL) { 119 free(copybuf); 120 copybuf = NULL; 121 } 122 } 123} 124 125