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 * $FreeBSD: src/usr.sbin/pw/cpdir.c,v 1.5.2.1 2000/08/14 19:01:35 jhb Exp $ 27 * $DragonFly: src/usr.sbin/pw/cpdir.c,v 1.2 2003/06/17 04:30:01 dillon Exp $ 28 */ 29 30 #include <err.h> 31 #include <errno.h> 32 #include <fcntl.h> 33 #include <stdio.h> 34 #include <string.h> 35 #include <stdlib.h> 36 #include <unistd.h> 37 #include <sys/types.h> 38 #include <sys/stat.h> 39 #include <sys/param.h> 40 #include <dirent.h> 41 42 #include "pwupd.h" 43 44 void 45 copymkdir(char const * dir, char const * skel, mode_t mode, uid_t uid, gid_t gid) 46 { 47 int rc = 0; 48 char src[MAXPATHLEN]; 49 char dst[MAXPATHLEN]; 50 51 if (mkdir(dir, mode) != 0 && errno != EEXIST) { 52 warn("mkdir(%s)", dir); 53 } else { 54 int infd, outfd; 55 struct stat st; 56 57 static char counter = 0; 58 static char *copybuf = NULL; 59 60 ++counter; 61 chown(dir, uid, gid); 62 if (skel == NULL || *skel == '\0') 63 rc = 1; 64 else { 65 DIR *d = opendir(skel); 66 67 if (d != NULL) { 68 struct dirent *e; 69 70 while ((e = readdir(d)) != NULL) { 71 char *p = e->d_name; 72 73 if (snprintf(src, sizeof(src), "%s/%s", skel, p) >= (int)sizeof(src)) 74 warn("warning: pathname too long '%s/%s' (skel not copied)", skel, p); 75 else if (stat(src, &st) == 0) { 76 if (strncmp(p, "dot.", 4) == 0) /* Conversion */ 77 p += 3; 78 if (snprintf(dst, sizeof(dst), "%s/%s", dir, p) >= (int)sizeof(dst)) 79 warn("warning: path too long '%s/%s' (skel file skipped)", dir, p); 80 else { 81 if (S_ISDIR(st.st_mode)) { /* Recurse for this */ 82 if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0) 83 copymkdir(dst, src, (st.st_mode & 0777), uid, gid); 84 chflags(dst, st.st_flags); /* propogate flags */ 85 /* 86 * Note: don't propogate special attributes 87 * but do propogate file flags 88 */ 89 } else if (S_ISREG(st.st_mode) && (outfd = open(dst, O_RDWR | O_CREAT | O_EXCL, st.st_mode)) != -1) { 90 if ((infd = open(src, O_RDONLY)) == -1) { 91 close(outfd); 92 remove(dst); 93 } else { 94 int b; 95 96 /* 97 * Allocate our copy buffer if we need to 98 */ 99 if (copybuf == NULL) 100 copybuf = malloc(4096); 101 while ((b = read(infd, copybuf, 4096)) > 0) 102 write(outfd, copybuf, b); 103 close(infd); 104 /* 105 * Propogate special filesystem flags 106 */ 107 fchown(outfd, uid, gid); 108 fchflags(outfd, st.st_flags); 109 close(outfd); 110 chown(dst, uid, gid); 111 } 112 } 113 } 114 } 115 } 116 closedir(d); 117 } 118 } 119 if (--counter == 0 && copybuf != NULL) { 120 free(copybuf); 121 copybuf = NULL; 122 } 123 } 124 } 125 126