bsdtar_windows.c revision 1.1.1.2
1/*- 2 * Copyright (c) 2009 Michihiro NAKAJIMA 3 * 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 THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28#if defined(_WIN32) && !defined(__CYGWIN__) 29 30#include "bsdtar_platform.h" 31#include <ctype.h> 32#include <errno.h> 33#include <fcntl.h> 34#include <io.h> 35#include <stddef.h> 36#ifdef HAVE_SYS_UTIME_H 37#include <sys/utime.h> 38#endif 39#include <sys/stat.h> 40#include <process.h> 41#include <stdlib.h> 42#include <wchar.h> 43#include <windows.h> 44#include <sddl.h> 45 46#include "bsdtar.h" 47#include "err.h" 48 49/* This may actually not be needed anymore. 50 * TODO: Review the error handling for chdir() failures and 51 * simply dump this if it's not really needed. */ 52static void __tar_dosmaperr(unsigned long); 53 54/* 55 * Prepend "\\?\" to the path name and convert it to unicode to permit 56 * an extended-length path for a maximum total path length of 32767 57 * characters. 58 * see also http://msdn.microsoft.com/en-us/library/aa365247.aspx 59 */ 60static wchar_t * 61permissive_name(const char *name) 62{ 63 wchar_t *wn, *wnp; 64 wchar_t *ws, *wsp; 65 DWORD l, len, slen, alloclen; 66 int unc; 67 68 len = (DWORD)strlen(name); 69 wn = malloc((len + 1) * sizeof(wchar_t)); 70 if (wn == NULL) 71 return (NULL); 72 l = MultiByteToWideChar(CP_ACP, 0, name, len, wn, len); 73 if (l == 0) { 74 free(wn); 75 return (NULL); 76 } 77 wn[l] = L'\0'; 78 79 /* Get a full path names */ 80 l = GetFullPathNameW(wn, 0, NULL, NULL); 81 if (l == 0) { 82 free(wn); 83 return (NULL); 84 } 85 wnp = malloc(l * sizeof(wchar_t)); 86 if (wnp == NULL) { 87 free(wn); 88 return (NULL); 89 } 90 len = GetFullPathNameW(wn, l, wnp, NULL); 91 free(wn); 92 wn = wnp; 93 94 if (wnp[0] == L'\\' && wnp[1] == L'\\' && 95 wnp[2] == L'?' && wnp[3] == L'\\') 96 /* We have already permissive names. */ 97 return (wn); 98 99 if (wnp[0] == L'\\' && wnp[1] == L'\\' && 100 wnp[2] == L'.' && wnp[3] == L'\\') { 101 /* Device names */ 102 if (((wnp[4] >= L'a' && wnp[4] <= L'z') || 103 (wnp[4] >= L'A' && wnp[4] <= L'Z')) && 104 wnp[5] == L':' && wnp[6] == L'\\') 105 wnp[2] = L'?';/* Not device names. */ 106 return (wn); 107 } 108 109 unc = 0; 110 if (wnp[0] == L'\\' && wnp[1] == L'\\' && wnp[2] != L'\\') { 111 wchar_t *p = &wnp[2]; 112 113 /* Skip server-name letters. */ 114 while (*p != L'\\' && *p != L'\0') 115 ++p; 116 if (*p == L'\\') { 117 wchar_t *rp = ++p; 118 /* Skip share-name letters. */ 119 while (*p != L'\\' && *p != L'\0') 120 ++p; 121 if (*p == L'\\' && p != rp) { 122 /* Now, match patterns such as 123 * "\\server-name\share-name\" */ 124 wnp += 2; 125 len -= 2; 126 unc = 1; 127 } 128 } 129 } 130 131 alloclen = slen = 4 + (unc * 4) + len + 1; 132 ws = wsp = malloc(slen * sizeof(wchar_t)); 133 if (ws == NULL) { 134 free(wn); 135 return (NULL); 136 } 137 /* prepend "\\?\" */ 138 wcsncpy(wsp, L"\\\\?\\", 4); 139 wsp += 4; 140 slen -= 4; 141 if (unc) { 142 /* append "UNC\" ---> "\\?\UNC\" */ 143 wcsncpy(wsp, L"UNC\\", 4); 144 wsp += 4; 145 slen -= 4; 146 } 147 wcsncpy(wsp, wnp, slen); 148 free(wn); 149 ws[alloclen - 1] = L'\0'; 150 return (ws); 151} 152 153int 154__tar_chdir(const char *path) 155{ 156 wchar_t *ws; 157 int r; 158 159 r = SetCurrentDirectoryA(path); 160 if (r == 0) { 161 if (GetLastError() != ERROR_FILE_NOT_FOUND) { 162 __tar_dosmaperr(GetLastError()); 163 return (-1); 164 } 165 } else 166 return (0); 167 ws = permissive_name(path); 168 if (ws == NULL) { 169 errno = EINVAL; 170 return (-1); 171 } 172 r = SetCurrentDirectoryW(ws); 173 free(ws); 174 if (r == 0) { 175 __tar_dosmaperr(GetLastError()); 176 return (-1); 177 } 178 return (0); 179} 180 181/* 182 * The following function was modified from PostgreSQL sources and is 183 * subject to the copyright below. 184 */ 185/*------------------------------------------------------------------------- 186 * 187 * win32error.c 188 * Map win32 error codes to errno values 189 * 190 * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group 191 * 192 * IDENTIFICATION 193 * $PostgreSQL: pgsql/src/port/win32error.c,v 1.4 2008/01/01 19:46:00 momjian Exp $ 194 * 195 *------------------------------------------------------------------------- 196 */ 197/* 198PostgreSQL Database Management System 199(formerly known as Postgres, then as Postgres95) 200 201Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group 202 203Portions Copyright (c) 1994, The Regents of the University of California 204 205Permission to use, copy, modify, and distribute this software and its 206documentation for any purpose, without fee, and without a written agreement 207is hereby granted, provided that the above copyright notice and this 208paragraph and the following two paragraphs appear in all copies. 209 210IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR 211DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING 212LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS 213DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE 214POSSIBILITY OF SUCH DAMAGE. 215 216THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, 217INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 218AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 219ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO 220PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 221*/ 222 223static const struct { 224 DWORD winerr; 225 int doserr; 226} doserrors[] = 227{ 228 { ERROR_INVALID_FUNCTION, EINVAL }, 229 { ERROR_FILE_NOT_FOUND, ENOENT }, 230 { ERROR_PATH_NOT_FOUND, ENOENT }, 231 { ERROR_TOO_MANY_OPEN_FILES, EMFILE }, 232 { ERROR_ACCESS_DENIED, EACCES }, 233 { ERROR_INVALID_HANDLE, EBADF }, 234 { ERROR_ARENA_TRASHED, ENOMEM }, 235 { ERROR_NOT_ENOUGH_MEMORY, ENOMEM }, 236 { ERROR_INVALID_BLOCK, ENOMEM }, 237 { ERROR_BAD_ENVIRONMENT, E2BIG }, 238 { ERROR_BAD_FORMAT, ENOEXEC }, 239 { ERROR_INVALID_ACCESS, EINVAL }, 240 { ERROR_INVALID_DATA, EINVAL }, 241 { ERROR_INVALID_DRIVE, ENOENT }, 242 { ERROR_CURRENT_DIRECTORY, EACCES }, 243 { ERROR_NOT_SAME_DEVICE, EXDEV }, 244 { ERROR_NO_MORE_FILES, ENOENT }, 245 { ERROR_LOCK_VIOLATION, EACCES }, 246 { ERROR_SHARING_VIOLATION, EACCES }, 247 { ERROR_BAD_NETPATH, ENOENT }, 248 { ERROR_NETWORK_ACCESS_DENIED, EACCES }, 249 { ERROR_BAD_NET_NAME, ENOENT }, 250 { ERROR_FILE_EXISTS, EEXIST }, 251 { ERROR_CANNOT_MAKE, EACCES }, 252 { ERROR_FAIL_I24, EACCES }, 253 { ERROR_INVALID_PARAMETER, EINVAL }, 254 { ERROR_NO_PROC_SLOTS, EAGAIN }, 255 { ERROR_DRIVE_LOCKED, EACCES }, 256 { ERROR_BROKEN_PIPE, EPIPE }, 257 { ERROR_DISK_FULL, ENOSPC }, 258 { ERROR_INVALID_TARGET_HANDLE, EBADF }, 259 { ERROR_INVALID_HANDLE, EINVAL }, 260 { ERROR_WAIT_NO_CHILDREN, ECHILD }, 261 { ERROR_CHILD_NOT_COMPLETE, ECHILD }, 262 { ERROR_DIRECT_ACCESS_HANDLE, EBADF }, 263 { ERROR_NEGATIVE_SEEK, EINVAL }, 264 { ERROR_SEEK_ON_DEVICE, EACCES }, 265 { ERROR_DIR_NOT_EMPTY, ENOTEMPTY }, 266 { ERROR_NOT_LOCKED, EACCES }, 267 { ERROR_BAD_PATHNAME, ENOENT }, 268 { ERROR_MAX_THRDS_REACHED, EAGAIN }, 269 { ERROR_LOCK_FAILED, EACCES }, 270 { ERROR_ALREADY_EXISTS, EEXIST }, 271 { ERROR_FILENAME_EXCED_RANGE, ENOENT }, 272 { ERROR_NESTING_NOT_ALLOWED, EAGAIN }, 273 { ERROR_NOT_ENOUGH_QUOTA, ENOMEM } 274}; 275 276static void 277__tar_dosmaperr(unsigned long e) 278{ 279 int i; 280 281 if (e == 0) { 282 errno = 0; 283 return; 284 } 285 286 for (i = 0; i < (int)sizeof(doserrors); i++) { 287 if (doserrors[i].winerr == e) { 288 errno = doserrors[i].doserr; 289 return; 290 } 291 } 292 293 /* fprintf(stderr, "unrecognized win32 error code: %lu", e); */ 294 errno = EINVAL; 295 return; 296} 297 298#endif 299