1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   fs/cifs/netmisc.c
4  *
5  *   Copyright (c) International Business Machines  Corp., 2002,2008
6  *   Author(s): Steve French (sfrench@us.ibm.com)
7  *
8  *   Error mapping routines from Samba libsmb/errormap.c
9  *   Copyright (C) Andrew Tridgell 2001
10  */
11 
12 #include <linux/net.h>
13 #include <linux/string.h>
14 #include <linux/in.h>
15 #include <linux/ctype.h>
16 #include <linux/fs.h>
17 #include <asm/div64.h>
18 #include <asm/byteorder.h>
19 #include <linux/inet.h>
20 #include "cifsfs.h"
21 #include "cifspdu.h"
22 #include "cifsglob.h"
23 #include "cifsproto.h"
24 #include "smberr.h"
25 #include "cifs_debug.h"
26 #include "nterr.h"
27 
28 struct smb_to_posix_error {
29 	__u16 smb_err;
30 	int posix_code;
31 };
32 
33 static const struct smb_to_posix_error mapping_table_ERRDOS[] = {
34 	{ERRbadfunc, -EINVAL},
35 	{ERRbadfile, -ENOENT},
36 	{ERRbadpath, -ENOTDIR},
37 	{ERRnofids, -EMFILE},
38 	{ERRnoaccess, -EACCES},
39 	{ERRbadfid, -EBADF},
40 	{ERRbadmcb, -EIO},
41 	{ERRnomem, -EREMOTEIO},
42 	{ERRbadmem, -EFAULT},
43 	{ERRbadenv, -EFAULT},
44 	{ERRbadformat, -EINVAL},
45 	{ERRbadaccess, -EACCES},
46 	{ERRbaddata, -EIO},
47 	{ERRbaddrive, -ENXIO},
48 	{ERRremcd, -EACCES},
49 	{ERRdiffdevice, -EXDEV},
50 	{ERRnofiles, -ENOENT},
51 	{ERRwriteprot, -EROFS},
52 	{ERRbadshare, -EBUSY},
53 	{ERRlock, -EACCES},
54 	{ERRunsup, -EINVAL},
55 	{ERRnosuchshare, -ENXIO},
56 	{ERRfilexists, -EEXIST},
57 	{ERRinvparm, -EINVAL},
58 	{ERRdiskfull, -ENOSPC},
59 	{ERRinvname, -ENOENT},
60 	{ERRinvlevel, -EOPNOTSUPP},
61 	{ERRdirnotempty, -ENOTEMPTY},
62 	{ERRnotlocked, -ENOLCK},
63 	{ERRcancelviolation, -ENOLCK},
64 	{ERRalreadyexists, -EEXIST},
65 	{ERRmoredata, -EOVERFLOW},
66 	{ERReasnotsupported, -EOPNOTSUPP},
67 	{ErrQuota, -EDQUOT},
68 	{ErrNotALink, -ENOLINK},
69 	{ERRnetlogonNotStarted, -ENOPROTOOPT},
70 	{ERRsymlink, -EOPNOTSUPP},
71 	{ErrTooManyLinks, -EMLINK},
72 	{0, 0}
73 };
74 
75 static const struct smb_to_posix_error mapping_table_ERRSRV[] = {
76 	{ERRerror, -EIO},
77 	{ERRbadpw, -EACCES},  /* was EPERM */
78 	{ERRbadtype, -EREMOTE},
79 	{ERRaccess, -EACCES},
80 	{ERRinvtid, -ENXIO},
81 	{ERRinvnetname, -ENXIO},
82 	{ERRinvdevice, -ENXIO},
83 	{ERRqfull, -ENOSPC},
84 	{ERRqtoobig, -ENOSPC},
85 	{ERRqeof, -EIO},
86 	{ERRinvpfid, -EBADF},
87 	{ERRsmbcmd, -EBADRQC},
88 	{ERRsrverror, -EIO},
89 	{ERRbadBID, -EIO},
90 	{ERRfilespecs, -EINVAL},
91 	{ERRbadLink, -EIO},
92 	{ERRbadpermits, -EINVAL},
93 	{ERRbadPID, -ESRCH},
94 	{ERRsetattrmode, -EINVAL},
95 	{ERRpaused, -EHOSTDOWN},
96 	{ERRmsgoff, -EHOSTDOWN},
97 	{ERRnoroom, -ENOSPC},
98 	{ERRrmuns, -EUSERS},
99 	{ERRtimeout, -ETIME},
100 	{ERRnoresource, -EREMOTEIO},
101 	{ERRtoomanyuids, -EUSERS},
102 	{ERRbaduid, -EACCES},
103 	{ERRusempx, -EIO},
104 	{ERRusestd, -EIO},
105 	{ERR_NOTIFY_ENUM_DIR, -ENOBUFS},
106 	{ERRnoSuchUser, -EACCES},
107 /*	{ERRaccountexpired, -EACCES},
108 	{ERRbadclient, -EACCES},
109 	{ERRbadLogonTime, -EACCES},
110 	{ERRpasswordExpired, -EACCES},*/
111 	{ERRaccountexpired, -EKEYEXPIRED},
112 	{ERRbadclient, -EACCES},
113 	{ERRbadLogonTime, -EACCES},
114 	{ERRpasswordExpired, -EKEYEXPIRED},
115 
116 	{ERRnosupport, -EINVAL},
117 	{0, 0}
118 };
119 
120 /*
121  * Convert a string containing text IPv4 or IPv6 address to binary form.
122  *
123  * Returns 0 on failure.
124  */
125 static int
cifs_inet_pton(const int address_family,const char * cp,int len,void * dst)126 cifs_inet_pton(const int address_family, const char *cp, int len, void *dst)
127 {
128 	int ret = 0;
129 
130 	/* calculate length by finding first slash or NULL */
131 	if (address_family == AF_INET)
132 		ret = in4_pton(cp, len, dst, '\\', NULL);
133 	else if (address_family == AF_INET6)
134 		ret = in6_pton(cp, len, dst , '\\', NULL);
135 
136 	cifs_dbg(NOISY, "address conversion returned %d for %*.*s\n",
137 		 ret, len, len, cp);
138 	if (ret > 0)
139 		ret = 1;
140 	return ret;
141 }
142 
143 /*
144  * Try to convert a string to an IPv4 address and then attempt to convert
145  * it to an IPv6 address if that fails. Set the family field if either
146  * succeeds. If it's an IPv6 address and it has a '%' sign in it, try to
147  * treat the part following it as a numeric sin6_scope_id.
148  *
149  * Returns 0 on failure.
150  */
151 int
cifs_convert_address(struct sockaddr * dst,const char * src,int len)152 cifs_convert_address(struct sockaddr *dst, const char *src, int len)
153 {
154 	int rc, alen, slen;
155 	const char *pct;
156 	char scope_id[13];
157 	struct sockaddr_in *s4 = (struct sockaddr_in *) dst;
158 	struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) dst;
159 
160 	/* IPv4 address */
161 	if (cifs_inet_pton(AF_INET, src, len, &s4->sin_addr.s_addr)) {
162 		s4->sin_family = AF_INET;
163 		return 1;
164 	}
165 
166 	/* attempt to exclude the scope ID from the address part */
167 	pct = memchr(src, '%', len);
168 	alen = pct ? pct - src : len;
169 
170 	rc = cifs_inet_pton(AF_INET6, src, alen, &s6->sin6_addr.s6_addr);
171 	if (!rc)
172 		return rc;
173 
174 	s6->sin6_family = AF_INET6;
175 	if (pct) {
176 		/* grab the scope ID */
177 		slen = len - (alen + 1);
178 		if (slen <= 0 || slen > 12)
179 			return 0;
180 		memcpy(scope_id, pct + 1, slen);
181 		scope_id[slen] = '\0';
182 
183 		rc = kstrtouint(scope_id, 0, &s6->sin6_scope_id);
184 		rc = (rc == 0) ? 1 : 0;
185 	}
186 
187 	return rc;
188 }
189 
190 void
cifs_set_port(struct sockaddr * addr,const unsigned short int port)191 cifs_set_port(struct sockaddr *addr, const unsigned short int port)
192 {
193 	switch (addr->sa_family) {
194 	case AF_INET:
195 		((struct sockaddr_in *)addr)->sin_port = htons(port);
196 		break;
197 	case AF_INET6:
198 		((struct sockaddr_in6 *)addr)->sin6_port = htons(port);
199 		break;
200 	}
201 }
202 
203 /*****************************************************************************
204 convert a NT status code to a dos class/code
205  *****************************************************************************/
206 /* NT status -> dos error map */
207 static const struct {
208 	__u8 dos_class;
209 	__u16 dos_code;
210 	__u32 ntstatus;
211 } ntstatus_to_dos_map[] = {
212 	{
213 	ERRDOS, ERRgeneral, NT_STATUS_UNSUCCESSFUL}, {
214 	ERRDOS, ERRbadfunc, NT_STATUS_NOT_IMPLEMENTED}, {
215 	ERRDOS, ERRinvlevel, NT_STATUS_INVALID_INFO_CLASS}, {
216 	ERRDOS, 24, NT_STATUS_INFO_LENGTH_MISMATCH}, {
217 	ERRHRD, ERRgeneral, NT_STATUS_ACCESS_VIOLATION}, {
218 	ERRHRD, ERRgeneral, NT_STATUS_IN_PAGE_ERROR}, {
219 	ERRHRD, ERRgeneral, NT_STATUS_PAGEFILE_QUOTA}, {
220 	ERRDOS, ERRbadfid, NT_STATUS_INVALID_HANDLE}, {
221 	ERRHRD, ERRgeneral, NT_STATUS_BAD_INITIAL_STACK}, {
222 	ERRDOS, 193, NT_STATUS_BAD_INITIAL_PC}, {
223 	ERRDOS, 87, NT_STATUS_INVALID_CID}, {
224 	ERRHRD, ERRgeneral, NT_STATUS_TIMER_NOT_CANCELED}, {
225 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER}, {
226 	ERRDOS, ERRbadfile, NT_STATUS_NO_SUCH_DEVICE}, {
227 	ERRDOS, ERRbadfile, NT_STATUS_NO_SUCH_FILE}, {
228 	ERRDOS, ERRbadfunc, NT_STATUS_INVALID_DEVICE_REQUEST}, {
229 	ERRDOS, 38, NT_STATUS_END_OF_FILE}, {
230 	ERRDOS, 34, NT_STATUS_WRONG_VOLUME}, {
231 	ERRDOS, 21, NT_STATUS_NO_MEDIA_IN_DEVICE}, {
232 	ERRHRD, ERRgeneral, NT_STATUS_UNRECOGNIZED_MEDIA}, {
233 	ERRDOS, 27, NT_STATUS_NONEXISTENT_SECTOR},
234 /*	{ This NT error code was 'sqashed'
235 	 from NT_STATUS_MORE_PROCESSING_REQUIRED to NT_STATUS_OK
236 	 during the session setup } */
237 	{
238 	ERRDOS, ERRnomem, NT_STATUS_NO_MEMORY}, {
239 	ERRDOS, 487, NT_STATUS_CONFLICTING_ADDRESSES}, {
240 	ERRDOS, 487, NT_STATUS_NOT_MAPPED_VIEW}, {
241 	ERRDOS, 87, NT_STATUS_UNABLE_TO_FREE_VM}, {
242 	ERRDOS, 87, NT_STATUS_UNABLE_TO_DELETE_SECTION}, {
243 	ERRDOS, 2142, NT_STATUS_INVALID_SYSTEM_SERVICE}, {
244 	ERRHRD, ERRgeneral, NT_STATUS_ILLEGAL_INSTRUCTION}, {
245 	ERRDOS, ERRnoaccess, NT_STATUS_INVALID_LOCK_SEQUENCE}, {
246 	ERRDOS, ERRnoaccess, NT_STATUS_INVALID_VIEW_SIZE}, {
247 	ERRDOS, 193, NT_STATUS_INVALID_FILE_FOR_SECTION}, {
248 	ERRDOS, ERRnoaccess, NT_STATUS_ALREADY_COMMITTED},
249 /*	{ This NT error code was 'sqashed'
250 	 from NT_STATUS_ACCESS_DENIED to NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE
251 	 during the session setup }   */
252 	{
253 	ERRDOS, ERRnoaccess, NT_STATUS_ACCESS_DENIED}, {
254 	ERRDOS, 111, NT_STATUS_BUFFER_TOO_SMALL}, {
255 	ERRDOS, ERRbadfid, NT_STATUS_OBJECT_TYPE_MISMATCH}, {
256 	ERRHRD, ERRgeneral, NT_STATUS_NONCONTINUABLE_EXCEPTION}, {
257 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_DISPOSITION}, {
258 	ERRHRD, ERRgeneral, NT_STATUS_UNWIND}, {
259 	ERRHRD, ERRgeneral, NT_STATUS_BAD_STACK}, {
260 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_UNWIND_TARGET}, {
261 	ERRDOS, 158, NT_STATUS_NOT_LOCKED}, {
262 	ERRHRD, ERRgeneral, NT_STATUS_PARITY_ERROR}, {
263 	ERRDOS, 487, NT_STATUS_UNABLE_TO_DECOMMIT_VM}, {
264 	ERRDOS, 487, NT_STATUS_NOT_COMMITTED}, {
265 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_PORT_ATTRIBUTES}, {
266 	ERRHRD, ERRgeneral, NT_STATUS_PORT_MESSAGE_TOO_LONG}, {
267 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_MIX}, {
268 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_QUOTA_LOWER}, {
269 	ERRHRD, ERRgeneral, NT_STATUS_DISK_CORRUPT_ERROR}, {
270 	 /* mapping changed since shell does lookup on * expects FileNotFound */
271 	ERRDOS, ERRbadfile, NT_STATUS_OBJECT_NAME_INVALID}, {
272 	ERRDOS, ERRbadfile, NT_STATUS_OBJECT_NAME_NOT_FOUND}, {
273 	ERRDOS, ERRalreadyexists, NT_STATUS_OBJECT_NAME_COLLISION}, {
274 	ERRHRD, ERRgeneral, NT_STATUS_HANDLE_NOT_WAITABLE}, {
275 	ERRDOS, ERRbadfid, NT_STATUS_PORT_DISCONNECTED}, {
276 	ERRHRD, ERRgeneral, NT_STATUS_DEVICE_ALREADY_ATTACHED}, {
277 	ERRDOS, 161, NT_STATUS_OBJECT_PATH_INVALID}, {
278 	ERRDOS, ERRbadpath, NT_STATUS_OBJECT_PATH_NOT_FOUND}, {
279 	ERRDOS, 161, NT_STATUS_OBJECT_PATH_SYNTAX_BAD}, {
280 	ERRHRD, ERRgeneral, NT_STATUS_DATA_OVERRUN}, {
281 	ERRHRD, ERRgeneral, NT_STATUS_DATA_LATE_ERROR}, {
282 	ERRDOS, 23, NT_STATUS_DATA_ERROR}, {
283 	ERRDOS, 23, NT_STATUS_CRC_ERROR}, {
284 	ERRDOS, ERRnomem, NT_STATUS_SECTION_TOO_BIG}, {
285 	ERRDOS, ERRnoaccess, NT_STATUS_PORT_CONNECTION_REFUSED}, {
286 	ERRDOS, ERRbadfid, NT_STATUS_INVALID_PORT_HANDLE}, {
287 	ERRDOS, ERRbadshare, NT_STATUS_SHARING_VIOLATION}, {
288 	ERRHRD, ERRgeneral, NT_STATUS_QUOTA_EXCEEDED}, {
289 	ERRDOS, 87, NT_STATUS_INVALID_PAGE_PROTECTION}, {
290 	ERRDOS, 288, NT_STATUS_MUTANT_NOT_OWNED}, {
291 	ERRDOS, 298, NT_STATUS_SEMAPHORE_LIMIT_EXCEEDED}, {
292 	ERRDOS, 87, NT_STATUS_PORT_ALREADY_SET}, {
293 	ERRDOS, 87, NT_STATUS_SECTION_NOT_IMAGE}, {
294 	ERRDOS, 156, NT_STATUS_SUSPEND_COUNT_EXCEEDED}, {
295 	ERRDOS, ERRnoaccess, NT_STATUS_THREAD_IS_TERMINATING}, {
296 	ERRDOS, 87, NT_STATUS_BAD_WORKING_SET_LIMIT}, {
297 	ERRDOS, 87, NT_STATUS_INCOMPATIBLE_FILE_MAP}, {
298 	ERRDOS, 87, NT_STATUS_SECTION_PROTECTION}, {
299 	ERRDOS, ERReasnotsupported, NT_STATUS_EAS_NOT_SUPPORTED}, {
300 	ERRDOS, 255, NT_STATUS_EA_TOO_LARGE}, {
301 	ERRHRD, ERRgeneral, NT_STATUS_NONEXISTENT_EA_ENTRY}, {
302 	ERRHRD, ERRgeneral, NT_STATUS_NO_EAS_ON_FILE}, {
303 	ERRHRD, ERRgeneral, NT_STATUS_EA_CORRUPT_ERROR}, {
304 	ERRDOS, ERRlock, NT_STATUS_FILE_LOCK_CONFLICT}, {
305 	ERRDOS, ERRlock, NT_STATUS_LOCK_NOT_GRANTED}, {
306 	ERRDOS, ERRbadfile, NT_STATUS_DELETE_PENDING}, {
307 	ERRDOS, ERRunsup, NT_STATUS_CTL_FILE_NOT_SUPPORTED}, {
308 	ERRHRD, ERRgeneral, NT_STATUS_UNKNOWN_REVISION}, {
309 	ERRHRD, ERRgeneral, NT_STATUS_REVISION_MISMATCH}, {
310 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_OWNER}, {
311 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_PRIMARY_GROUP}, {
312 	ERRHRD, ERRgeneral, NT_STATUS_NO_IMPERSONATION_TOKEN}, {
313 	ERRHRD, ERRgeneral, NT_STATUS_CANT_DISABLE_MANDATORY}, {
314 	ERRDOS, 2215, NT_STATUS_NO_LOGON_SERVERS}, {
315 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_LOGON_SESSION}, {
316 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_PRIVILEGE}, {
317 	ERRDOS, ERRnoaccess, NT_STATUS_PRIVILEGE_NOT_HELD}, {
318 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_ACCOUNT_NAME}, {
319 	ERRHRD, ERRgeneral, NT_STATUS_USER_EXISTS},
320 /*	{ This NT error code was 'sqashed'
321 	 from NT_STATUS_NO_SUCH_USER to NT_STATUS_LOGON_FAILURE
322 	 during the session setup } */
323 	{
324 	ERRDOS, ERRnoaccess, NT_STATUS_NO_SUCH_USER}, { /* could map to 2238 */
325 	ERRHRD, ERRgeneral, NT_STATUS_GROUP_EXISTS}, {
326 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_GROUP}, {
327 	ERRHRD, ERRgeneral, NT_STATUS_MEMBER_IN_GROUP}, {
328 	ERRHRD, ERRgeneral, NT_STATUS_MEMBER_NOT_IN_GROUP}, {
329 	ERRHRD, ERRgeneral, NT_STATUS_LAST_ADMIN},
330 /*	{ This NT error code was 'sqashed'
331 	 from NT_STATUS_WRONG_PASSWORD to NT_STATUS_LOGON_FAILURE
332 	 during the session setup } */
333 	{
334 	ERRSRV, ERRbadpw, NT_STATUS_WRONG_PASSWORD}, {
335 	ERRHRD, ERRgeneral, NT_STATUS_ILL_FORMED_PASSWORD}, {
336 	ERRHRD, ERRgeneral, NT_STATUS_PASSWORD_RESTRICTION}, {
337 	ERRDOS, ERRnoaccess, NT_STATUS_LOGON_FAILURE}, {
338 	ERRHRD, ERRgeneral, NT_STATUS_ACCOUNT_RESTRICTION}, {
339 	ERRSRV, ERRbadLogonTime, NT_STATUS_INVALID_LOGON_HOURS}, {
340 	ERRSRV, ERRbadclient, NT_STATUS_INVALID_WORKSTATION}, {
341 	ERRSRV, ERRpasswordExpired, NT_STATUS_PASSWORD_EXPIRED}, {
342 	ERRSRV, ERRaccountexpired, NT_STATUS_ACCOUNT_DISABLED}, {
343 	ERRHRD, ERRgeneral, NT_STATUS_NONE_MAPPED}, {
344 	ERRHRD, ERRgeneral, NT_STATUS_TOO_MANY_LUIDS_REQUESTED}, {
345 	ERRHRD, ERRgeneral, NT_STATUS_LUIDS_EXHAUSTED}, {
346 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_SUB_AUTHORITY}, {
347 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_ACL}, {
348 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_SID}, {
349 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_SECURITY_DESCR}, {
350 	ERRDOS, 127, NT_STATUS_PROCEDURE_NOT_FOUND}, {
351 	ERRDOS, 193, NT_STATUS_INVALID_IMAGE_FORMAT}, {
352 	ERRHRD, ERRgeneral, NT_STATUS_NO_TOKEN}, {
353 	ERRHRD, ERRgeneral, NT_STATUS_BAD_INHERITANCE_ACL}, {
354 	ERRDOS, 158, NT_STATUS_RANGE_NOT_LOCKED}, {
355 	ERRDOS, 112, NT_STATUS_DISK_FULL}, {
356 	ERRHRD, ERRgeneral, NT_STATUS_SERVER_DISABLED}, {
357 	ERRHRD, ERRgeneral, NT_STATUS_SERVER_NOT_DISABLED}, {
358 	ERRDOS, 68, NT_STATUS_TOO_MANY_GUIDS_REQUESTED}, {
359 	ERRDOS, 259, NT_STATUS_GUIDS_EXHAUSTED}, {
360 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_ID_AUTHORITY}, {
361 	ERRDOS, 259, NT_STATUS_AGENTS_EXHAUSTED}, {
362 	ERRDOS, 154, NT_STATUS_INVALID_VOLUME_LABEL}, {
363 	ERRDOS, 14, NT_STATUS_SECTION_NOT_EXTENDED}, {
364 	ERRDOS, 487, NT_STATUS_NOT_MAPPED_DATA}, {
365 	ERRHRD, ERRgeneral, NT_STATUS_RESOURCE_DATA_NOT_FOUND}, {
366 	ERRHRD, ERRgeneral, NT_STATUS_RESOURCE_TYPE_NOT_FOUND}, {
367 	ERRHRD, ERRgeneral, NT_STATUS_RESOURCE_NAME_NOT_FOUND}, {
368 	ERRHRD, ERRgeneral, NT_STATUS_ARRAY_BOUNDS_EXCEEDED}, {
369 	ERRHRD, ERRgeneral, NT_STATUS_FLOAT_DENORMAL_OPERAND}, {
370 	ERRHRD, ERRgeneral, NT_STATUS_FLOAT_DIVIDE_BY_ZERO}, {
371 	ERRHRD, ERRgeneral, NT_STATUS_FLOAT_INEXACT_RESULT}, {
372 	ERRHRD, ERRgeneral, NT_STATUS_FLOAT_INVALID_OPERATION}, {
373 	ERRHRD, ERRgeneral, NT_STATUS_FLOAT_OVERFLOW}, {
374 	ERRHRD, ERRgeneral, NT_STATUS_FLOAT_STACK_CHECK}, {
375 	ERRHRD, ERRgeneral, NT_STATUS_FLOAT_UNDERFLOW}, {
376 	ERRHRD, ERRgeneral, NT_STATUS_INTEGER_DIVIDE_BY_ZERO}, {
377 	ERRDOS, 534, NT_STATUS_INTEGER_OVERFLOW}, {
378 	ERRHRD, ERRgeneral, NT_STATUS_PRIVILEGED_INSTRUCTION}, {
379 	ERRDOS, ERRnomem, NT_STATUS_TOO_MANY_PAGING_FILES}, {
380 	ERRHRD, ERRgeneral, NT_STATUS_FILE_INVALID}, {
381 	ERRHRD, ERRgeneral, NT_STATUS_ALLOTTED_SPACE_EXCEEDED},
382 /*	{ This NT error code was 'sqashed'
383 	 from NT_STATUS_INSUFFICIENT_RESOURCES to
384 	 NT_STATUS_INSUFF_SERVER_RESOURCES during the session setup } */
385 	{
386 	ERRDOS, ERRnoresource, NT_STATUS_INSUFFICIENT_RESOURCES}, {
387 	ERRDOS, ERRbadpath, NT_STATUS_DFS_EXIT_PATH_FOUND}, {
388 	ERRDOS, 23, NT_STATUS_DEVICE_DATA_ERROR}, {
389 	ERRHRD, ERRgeneral, NT_STATUS_DEVICE_NOT_CONNECTED}, {
390 	ERRDOS, 21, NT_STATUS_DEVICE_POWER_FAILURE}, {
391 	ERRDOS, 487, NT_STATUS_FREE_VM_NOT_AT_BASE}, {
392 	ERRDOS, 487, NT_STATUS_MEMORY_NOT_ALLOCATED}, {
393 	ERRHRD, ERRgeneral, NT_STATUS_WORKING_SET_QUOTA}, {
394 	ERRDOS, 19, NT_STATUS_MEDIA_WRITE_PROTECTED}, {
395 	ERRDOS, 21, NT_STATUS_DEVICE_NOT_READY}, {
396 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_GROUP_ATTRIBUTES}, {
397 	ERRHRD, ERRgeneral, NT_STATUS_BAD_IMPERSONATION_LEVEL}, {
398 	ERRHRD, ERRgeneral, NT_STATUS_CANT_OPEN_ANONYMOUS}, {
399 	ERRHRD, ERRgeneral, NT_STATUS_BAD_VALIDATION_CLASS}, {
400 	ERRHRD, ERRgeneral, NT_STATUS_BAD_TOKEN_TYPE}, {
401 	ERRDOS, 87, NT_STATUS_BAD_MASTER_BOOT_RECORD}, {
402 	ERRHRD, ERRgeneral, NT_STATUS_INSTRUCTION_MISALIGNMENT}, {
403 	ERRDOS, ERRpipebusy, NT_STATUS_INSTANCE_NOT_AVAILABLE}, {
404 	ERRDOS, ERRpipebusy, NT_STATUS_PIPE_NOT_AVAILABLE}, {
405 	ERRDOS, ERRbadpipe, NT_STATUS_INVALID_PIPE_STATE}, {
406 	ERRDOS, ERRpipebusy, NT_STATUS_PIPE_BUSY}, {
407 	ERRDOS, ERRbadfunc, NT_STATUS_ILLEGAL_FUNCTION}, {
408 	ERRDOS, ERRnotconnected, NT_STATUS_PIPE_DISCONNECTED}, {
409 	ERRDOS, ERRpipeclosing, NT_STATUS_PIPE_CLOSING}, {
410 	ERRHRD, ERRgeneral, NT_STATUS_PIPE_CONNECTED}, {
411 	ERRHRD, ERRgeneral, NT_STATUS_PIPE_LISTENING}, {
412 	ERRDOS, ERRbadpipe, NT_STATUS_INVALID_READ_MODE}, {
413 	ERRDOS, 121, NT_STATUS_IO_TIMEOUT}, {
414 	ERRDOS, 38, NT_STATUS_FILE_FORCED_CLOSED}, {
415 	ERRHRD, ERRgeneral, NT_STATUS_PROFILING_NOT_STARTED}, {
416 	ERRHRD, ERRgeneral, NT_STATUS_PROFILING_NOT_STOPPED}, {
417 	ERRHRD, ERRgeneral, NT_STATUS_COULD_NOT_INTERPRET}, {
418 	ERRDOS, ERRnoaccess, NT_STATUS_FILE_IS_A_DIRECTORY}, {
419 	ERRDOS, ERRunsup, NT_STATUS_NOT_SUPPORTED}, {
420 	ERRDOS, 51, NT_STATUS_REMOTE_NOT_LISTENING}, {
421 	ERRDOS, 52, NT_STATUS_DUPLICATE_NAME}, {
422 	ERRDOS, 53, NT_STATUS_BAD_NETWORK_PATH}, {
423 	ERRDOS, 54, NT_STATUS_NETWORK_BUSY}, {
424 	ERRDOS, 55, NT_STATUS_DEVICE_DOES_NOT_EXIST}, {
425 	ERRDOS, 56, NT_STATUS_TOO_MANY_COMMANDS}, {
426 	ERRDOS, 57, NT_STATUS_ADAPTER_HARDWARE_ERROR}, {
427 	ERRDOS, 58, NT_STATUS_INVALID_NETWORK_RESPONSE}, {
428 	ERRDOS, 59, NT_STATUS_UNEXPECTED_NETWORK_ERROR}, {
429 	ERRDOS, 60, NT_STATUS_BAD_REMOTE_ADAPTER}, {
430 	ERRDOS, 61, NT_STATUS_PRINT_QUEUE_FULL}, {
431 	ERRDOS, 62, NT_STATUS_NO_SPOOL_SPACE}, {
432 	ERRDOS, 63, NT_STATUS_PRINT_CANCELLED}, {
433 	ERRDOS, 64, NT_STATUS_NETWORK_NAME_DELETED}, {
434 	ERRDOS, 65, NT_STATUS_NETWORK_ACCESS_DENIED}, {
435 	ERRDOS, 66, NT_STATUS_BAD_DEVICE_TYPE}, {
436 	ERRDOS, ERRnosuchshare, NT_STATUS_BAD_NETWORK_NAME}, {
437 	ERRDOS, 68, NT_STATUS_TOO_MANY_NAMES}, {
438 	ERRDOS, 69, NT_STATUS_TOO_MANY_SESSIONS}, {
439 	ERRDOS, 70, NT_STATUS_SHARING_PAUSED}, {
440 	ERRDOS, 71, NT_STATUS_REQUEST_NOT_ACCEPTED}, {
441 	ERRDOS, 72, NT_STATUS_REDIRECTOR_PAUSED}, {
442 	ERRDOS, 88, NT_STATUS_NET_WRITE_FAULT}, {
443 	ERRHRD, ERRgeneral, NT_STATUS_PROFILING_AT_LIMIT}, {
444 	ERRDOS, ERRdiffdevice, NT_STATUS_NOT_SAME_DEVICE}, {
445 	ERRDOS, ERRnoaccess, NT_STATUS_FILE_RENAMED}, {
446 	ERRDOS, 240, NT_STATUS_VIRTUAL_CIRCUIT_CLOSED}, {
447 	ERRHRD, ERRgeneral, NT_STATUS_NO_SECURITY_ON_OBJECT}, {
448 	ERRHRD, ERRgeneral, NT_STATUS_CANT_WAIT}, {
449 	ERRDOS, ERRpipeclosing, NT_STATUS_PIPE_EMPTY}, {
450 	ERRHRD, ERRgeneral, NT_STATUS_CANT_ACCESS_DOMAIN_INFO}, {
451 	ERRHRD, ERRgeneral, NT_STATUS_CANT_TERMINATE_SELF}, {
452 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_SERVER_STATE}, {
453 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_DOMAIN_STATE}, {
454 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_DOMAIN_ROLE}, {
455 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_DOMAIN}, {
456 	ERRHRD, ERRgeneral, NT_STATUS_DOMAIN_EXISTS}, {
457 	ERRHRD, ERRgeneral, NT_STATUS_DOMAIN_LIMIT_EXCEEDED}, {
458 	ERRDOS, 300, NT_STATUS_OPLOCK_NOT_GRANTED}, {
459 	ERRDOS, 301, NT_STATUS_INVALID_OPLOCK_PROTOCOL}, {
460 	ERRHRD, ERRgeneral, NT_STATUS_INTERNAL_DB_CORRUPTION}, {
461 	ERRHRD, ERRgeneral, NT_STATUS_INTERNAL_ERROR}, {
462 	ERRHRD, ERRgeneral, NT_STATUS_GENERIC_NOT_MAPPED}, {
463 	ERRHRD, ERRgeneral, NT_STATUS_BAD_DESCRIPTOR_FORMAT}, {
464 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_USER_BUFFER}, {
465 	ERRHRD, ERRgeneral, NT_STATUS_UNEXPECTED_IO_ERROR}, {
466 	ERRHRD, ERRgeneral, NT_STATUS_UNEXPECTED_MM_CREATE_ERR}, {
467 	ERRHRD, ERRgeneral, NT_STATUS_UNEXPECTED_MM_MAP_ERROR}, {
468 	ERRHRD, ERRgeneral, NT_STATUS_UNEXPECTED_MM_EXTEND_ERR}, {
469 	ERRHRD, ERRgeneral, NT_STATUS_NOT_LOGON_PROCESS}, {
470 	ERRHRD, ERRgeneral, NT_STATUS_LOGON_SESSION_EXISTS}, {
471 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_1}, {
472 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_2}, {
473 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_3}, {
474 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_4}, {
475 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_5}, {
476 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_6}, {
477 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_7}, {
478 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_8}, {
479 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_9}, {
480 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_10}, {
481 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_11}, {
482 	ERRDOS, 87, NT_STATUS_INVALID_PARAMETER_12}, {
483 	ERRDOS, ERRbadpath, NT_STATUS_REDIRECTOR_NOT_STARTED}, {
484 	ERRHRD, ERRgeneral, NT_STATUS_REDIRECTOR_STARTED}, {
485 	ERRHRD, ERRgeneral, NT_STATUS_STACK_OVERFLOW}, {
486 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_PACKAGE}, {
487 	ERRHRD, ERRgeneral, NT_STATUS_BAD_FUNCTION_TABLE}, {
488 	ERRDOS, 203, 0xc0000100}, {
489 	ERRDOS, 145, NT_STATUS_DIRECTORY_NOT_EMPTY}, {
490 	ERRHRD, ERRgeneral, NT_STATUS_FILE_CORRUPT_ERROR}, {
491 	ERRDOS, 267, NT_STATUS_NOT_A_DIRECTORY}, {
492 	ERRHRD, ERRgeneral, NT_STATUS_BAD_LOGON_SESSION_STATE}, {
493 	ERRHRD, ERRgeneral, NT_STATUS_LOGON_SESSION_COLLISION}, {
494 	ERRDOS, 206, NT_STATUS_NAME_TOO_LONG}, {
495 	ERRDOS, 2401, NT_STATUS_FILES_OPEN}, {
496 	ERRDOS, 2404, NT_STATUS_CONNECTION_IN_USE}, {
497 	ERRHRD, ERRgeneral, NT_STATUS_MESSAGE_NOT_FOUND}, {
498 	ERRDOS, ERRnoaccess, NT_STATUS_PROCESS_IS_TERMINATING}, {
499 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_LOGON_TYPE}, {
500 	ERRHRD, ERRgeneral, NT_STATUS_NO_GUID_TRANSLATION}, {
501 	ERRHRD, ERRgeneral, NT_STATUS_CANNOT_IMPERSONATE}, {
502 	ERRHRD, ERRgeneral, NT_STATUS_IMAGE_ALREADY_LOADED}, {
503 	ERRHRD, ERRgeneral, NT_STATUS_ABIOS_NOT_PRESENT}, {
504 	ERRHRD, ERRgeneral, NT_STATUS_ABIOS_LID_NOT_EXIST}, {
505 	ERRHRD, ERRgeneral, NT_STATUS_ABIOS_LID_ALREADY_OWNED}, {
506 	ERRHRD, ERRgeneral, NT_STATUS_ABIOS_NOT_LID_OWNER}, {
507 	ERRHRD, ERRgeneral, NT_STATUS_ABIOS_INVALID_COMMAND}, {
508 	ERRHRD, ERRgeneral, NT_STATUS_ABIOS_INVALID_LID}, {
509 	ERRHRD, ERRgeneral, NT_STATUS_ABIOS_SELECTOR_NOT_AVAILABLE}, {
510 	ERRHRD, ERRgeneral, NT_STATUS_ABIOS_INVALID_SELECTOR}, {
511 	ERRHRD, ERRgeneral, NT_STATUS_NO_LDT}, {
512 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_LDT_SIZE}, {
513 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_LDT_OFFSET}, {
514 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_LDT_DESCRIPTOR}, {
515 	ERRDOS, 193, NT_STATUS_INVALID_IMAGE_NE_FORMAT}, {
516 	ERRHRD, ERRgeneral, NT_STATUS_RXACT_INVALID_STATE}, {
517 	ERRHRD, ERRgeneral, NT_STATUS_RXACT_COMMIT_FAILURE}, {
518 	ERRHRD, ERRgeneral, NT_STATUS_MAPPED_FILE_SIZE_ZERO}, {
519 	ERRDOS, ERRnofids, NT_STATUS_TOO_MANY_OPENED_FILES}, {
520 	ERRHRD, ERRgeneral, NT_STATUS_CANCELLED}, {
521 	ERRDOS, ERRnoaccess, NT_STATUS_CANNOT_DELETE}, {
522 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_COMPUTER_NAME}, {
523 	ERRDOS, ERRnoaccess, NT_STATUS_FILE_DELETED}, {
524 	ERRHRD, ERRgeneral, NT_STATUS_SPECIAL_ACCOUNT}, {
525 	ERRHRD, ERRgeneral, NT_STATUS_SPECIAL_GROUP}, {
526 	ERRHRD, ERRgeneral, NT_STATUS_SPECIAL_USER}, {
527 	ERRHRD, ERRgeneral, NT_STATUS_MEMBERS_PRIMARY_GROUP}, {
528 	ERRDOS, ERRbadfid, NT_STATUS_FILE_CLOSED}, {
529 	ERRHRD, ERRgeneral, NT_STATUS_TOO_MANY_THREADS}, {
530 	ERRHRD, ERRgeneral, NT_STATUS_THREAD_NOT_IN_PROCESS}, {
531 	ERRHRD, ERRgeneral, NT_STATUS_TOKEN_ALREADY_IN_USE}, {
532 	ERRHRD, ERRgeneral, NT_STATUS_PAGEFILE_QUOTA_EXCEEDED}, {
533 	ERRHRD, ERRgeneral, NT_STATUS_COMMITMENT_LIMIT}, {
534 	ERRDOS, 193, NT_STATUS_INVALID_IMAGE_LE_FORMAT}, {
535 	ERRDOS, 193, NT_STATUS_INVALID_IMAGE_NOT_MZ}, {
536 	ERRDOS, 193, NT_STATUS_INVALID_IMAGE_PROTECT}, {
537 	ERRDOS, 193, NT_STATUS_INVALID_IMAGE_WIN_16}, {
538 	ERRHRD, ERRgeneral, NT_STATUS_LOGON_SERVER_CONFLICT}, {
539 	ERRHRD, ERRgeneral, NT_STATUS_TIME_DIFFERENCE_AT_DC}, {
540 	ERRHRD, ERRgeneral, NT_STATUS_SYNCHRONIZATION_REQUIRED}, {
541 	ERRDOS, 126, NT_STATUS_DLL_NOT_FOUND}, {
542 	ERRHRD, ERRgeneral, NT_STATUS_OPEN_FAILED}, {
543 	ERRHRD, ERRgeneral, NT_STATUS_IO_PRIVILEGE_FAILED}, {
544 	ERRDOS, 182, NT_STATUS_ORDINAL_NOT_FOUND}, {
545 	ERRDOS, 127, NT_STATUS_ENTRYPOINT_NOT_FOUND}, {
546 	ERRHRD, ERRgeneral, NT_STATUS_CONTROL_C_EXIT}, {
547 	ERRDOS, 64, NT_STATUS_LOCAL_DISCONNECT}, {
548 	ERRDOS, 64, NT_STATUS_REMOTE_DISCONNECT}, {
549 	ERRDOS, 51, NT_STATUS_REMOTE_RESOURCES}, {
550 	ERRDOS, 59, NT_STATUS_LINK_FAILED}, {
551 	ERRDOS, 59, NT_STATUS_LINK_TIMEOUT}, {
552 	ERRDOS, 59, NT_STATUS_INVALID_CONNECTION}, {
553 	ERRDOS, 59, NT_STATUS_INVALID_ADDRESS}, {
554 	ERRHRD, ERRgeneral, NT_STATUS_DLL_INIT_FAILED}, {
555 	ERRHRD, ERRgeneral, NT_STATUS_MISSING_SYSTEMFILE}, {
556 	ERRHRD, ERRgeneral, NT_STATUS_UNHANDLED_EXCEPTION}, {
557 	ERRHRD, ERRgeneral, NT_STATUS_APP_INIT_FAILURE}, {
558 	ERRHRD, ERRgeneral, NT_STATUS_PAGEFILE_CREATE_FAILED}, {
559 	ERRHRD, ERRgeneral, NT_STATUS_NO_PAGEFILE}, {
560 	ERRDOS, 124, NT_STATUS_INVALID_LEVEL}, {
561 	ERRDOS, 86, NT_STATUS_WRONG_PASSWORD_CORE}, {
562 	ERRHRD, ERRgeneral, NT_STATUS_ILLEGAL_FLOAT_CONTEXT}, {
563 	ERRDOS, 109, NT_STATUS_PIPE_BROKEN}, {
564 	ERRHRD, ERRgeneral, NT_STATUS_REGISTRY_CORRUPT}, {
565 	ERRHRD, ERRgeneral, NT_STATUS_REGISTRY_IO_FAILED}, {
566 	ERRHRD, ERRgeneral, NT_STATUS_NO_EVENT_PAIR}, {
567 	ERRHRD, ERRgeneral, NT_STATUS_UNRECOGNIZED_VOLUME}, {
568 	ERRHRD, ERRgeneral, NT_STATUS_SERIAL_NO_DEVICE_INITED}, {
569 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_ALIAS}, {
570 	ERRHRD, ERRgeneral, NT_STATUS_MEMBER_NOT_IN_ALIAS}, {
571 	ERRHRD, ERRgeneral, NT_STATUS_MEMBER_IN_ALIAS}, {
572 	ERRHRD, ERRgeneral, NT_STATUS_ALIAS_EXISTS}, {
573 	ERRHRD, ERRgeneral, NT_STATUS_LOGON_NOT_GRANTED}, {
574 	ERRHRD, ERRgeneral, NT_STATUS_TOO_MANY_SECRETS}, {
575 	ERRHRD, ERRgeneral, NT_STATUS_SECRET_TOO_LONG}, {
576 	ERRHRD, ERRgeneral, NT_STATUS_INTERNAL_DB_ERROR}, {
577 	ERRHRD, ERRgeneral, NT_STATUS_FULLSCREEN_MODE}, {
578 	ERRHRD, ERRgeneral, NT_STATUS_TOO_MANY_CONTEXT_IDS}, {
579 	ERRDOS, ERRnoaccess, NT_STATUS_LOGON_TYPE_NOT_GRANTED}, {
580 	ERRHRD, ERRgeneral, NT_STATUS_NOT_REGISTRY_FILE}, {
581 	ERRHRD, ERRgeneral, NT_STATUS_NT_CROSS_ENCRYPTION_REQUIRED}, {
582 	ERRHRD, ERRgeneral, NT_STATUS_DOMAIN_CTRLR_CONFIG_ERROR}, {
583 	ERRHRD, ERRgeneral, NT_STATUS_FT_MISSING_MEMBER}, {
584 	ERRHRD, ERRgeneral, NT_STATUS_ILL_FORMED_SERVICE_ENTRY}, {
585 	ERRHRD, ERRgeneral, NT_STATUS_ILLEGAL_CHARACTER}, {
586 	ERRHRD, ERRgeneral, NT_STATUS_UNMAPPABLE_CHARACTER}, {
587 	ERRHRD, ERRgeneral, NT_STATUS_UNDEFINED_CHARACTER}, {
588 	ERRHRD, ERRgeneral, NT_STATUS_FLOPPY_VOLUME}, {
589 	ERRHRD, ERRgeneral, NT_STATUS_FLOPPY_ID_MARK_NOT_FOUND}, {
590 	ERRHRD, ERRgeneral, NT_STATUS_FLOPPY_WRONG_CYLINDER}, {
591 	ERRHRD, ERRgeneral, NT_STATUS_FLOPPY_UNKNOWN_ERROR}, {
592 	ERRHRD, ERRgeneral, NT_STATUS_FLOPPY_BAD_REGISTERS}, {
593 	ERRHRD, ERRgeneral, NT_STATUS_DISK_RECALIBRATE_FAILED}, {
594 	ERRHRD, ERRgeneral, NT_STATUS_DISK_OPERATION_FAILED}, {
595 	ERRHRD, ERRgeneral, NT_STATUS_DISK_RESET_FAILED}, {
596 	ERRHRD, ERRgeneral, NT_STATUS_SHARED_IRQ_BUSY}, {
597 	ERRHRD, ERRgeneral, NT_STATUS_FT_ORPHANING}, {
598 	ERRHRD, ERRgeneral, 0xc000016e}, {
599 	ERRHRD, ERRgeneral, 0xc000016f}, {
600 	ERRHRD, ERRgeneral, 0xc0000170}, {
601 	ERRHRD, ERRgeneral, 0xc0000171}, {
602 	ERRHRD, ERRgeneral, NT_STATUS_PARTITION_FAILURE}, {
603 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_BLOCK_LENGTH}, {
604 	ERRHRD, ERRgeneral, NT_STATUS_DEVICE_NOT_PARTITIONED}, {
605 	ERRHRD, ERRgeneral, NT_STATUS_UNABLE_TO_LOCK_MEDIA}, {
606 	ERRHRD, ERRgeneral, NT_STATUS_UNABLE_TO_UNLOAD_MEDIA}, {
607 	ERRHRD, ERRgeneral, NT_STATUS_EOM_OVERFLOW}, {
608 	ERRHRD, ERRgeneral, NT_STATUS_NO_MEDIA}, {
609 	ERRHRD, ERRgeneral, 0xc0000179}, {
610 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_MEMBER}, {
611 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_MEMBER}, {
612 	ERRHRD, ERRgeneral, NT_STATUS_KEY_DELETED}, {
613 	ERRHRD, ERRgeneral, NT_STATUS_NO_LOG_SPACE}, {
614 	ERRHRD, ERRgeneral, NT_STATUS_TOO_MANY_SIDS}, {
615 	ERRHRD, ERRgeneral, NT_STATUS_LM_CROSS_ENCRYPTION_REQUIRED}, {
616 	ERRHRD, ERRgeneral, NT_STATUS_KEY_HAS_CHILDREN}, {
617 	ERRHRD, ERRgeneral, NT_STATUS_CHILD_MUST_BE_VOLATILE}, {
618 	ERRDOS, 87, NT_STATUS_DEVICE_CONFIGURATION_ERROR}, {
619 	ERRHRD, ERRgeneral, NT_STATUS_DRIVER_INTERNAL_ERROR}, {
620 	ERRDOS, 22, NT_STATUS_INVALID_DEVICE_STATE}, {
621 	ERRHRD, ERRgeneral, NT_STATUS_IO_DEVICE_ERROR}, {
622 	ERRHRD, ERRgeneral, NT_STATUS_DEVICE_PROTOCOL_ERROR}, {
623 	ERRHRD, ERRgeneral, NT_STATUS_BACKUP_CONTROLLER}, {
624 	ERRHRD, ERRgeneral, NT_STATUS_LOG_FILE_FULL}, {
625 	ERRDOS, 19, NT_STATUS_TOO_LATE}, {
626 	ERRDOS, ERRnoaccess, NT_STATUS_NO_TRUST_LSA_SECRET},
627 /*	{ This NT error code was 'sqashed'
628 	 from NT_STATUS_NO_TRUST_SAM_ACCOUNT to
629 	 NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE during the session setup } */
630 	{
631 	ERRDOS, ERRnoaccess, NT_STATUS_NO_TRUST_SAM_ACCOUNT}, {
632 	ERRDOS, ERRnoaccess, NT_STATUS_TRUSTED_DOMAIN_FAILURE}, {
633 	ERRDOS, ERRnoaccess, NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE}, {
634 	ERRHRD, ERRgeneral, NT_STATUS_EVENTLOG_FILE_CORRUPT}, {
635 	ERRHRD, ERRgeneral, NT_STATUS_EVENTLOG_CANT_START}, {
636 	ERRDOS, ERRnoaccess, NT_STATUS_TRUST_FAILURE}, {
637 	ERRHRD, ERRgeneral, NT_STATUS_MUTANT_LIMIT_EXCEEDED}, {
638 	ERRDOS, ERRnetlogonNotStarted, NT_STATUS_NETLOGON_NOT_STARTED}, {
639 	ERRSRV, ERRaccountexpired, NT_STATUS_ACCOUNT_EXPIRED}, {
640 	ERRHRD, ERRgeneral, NT_STATUS_POSSIBLE_DEADLOCK}, {
641 	ERRHRD, ERRgeneral, NT_STATUS_NETWORK_CREDENTIAL_CONFLICT}, {
642 	ERRHRD, ERRgeneral, NT_STATUS_REMOTE_SESSION_LIMIT}, {
643 	ERRHRD, ERRgeneral, NT_STATUS_EVENTLOG_FILE_CHANGED}, {
644 	ERRDOS, ERRnoaccess, NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT}, {
645 	ERRDOS, ERRnoaccess, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT}, {
646 	ERRDOS, ERRnoaccess, NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT},
647 /*	{ This NT error code was 'sqashed'
648 	 from NT_STATUS_DOMAIN_TRUST_INCONSISTENT to NT_STATUS_LOGON_FAILURE
649 	 during the session setup }  */
650 	{
651 	ERRDOS, ERRnoaccess, NT_STATUS_DOMAIN_TRUST_INCONSISTENT}, {
652 	ERRHRD, ERRgeneral, NT_STATUS_FS_DRIVER_REQUIRED}, {
653 	ERRHRD, ERRgeneral, NT_STATUS_NO_USER_SESSION_KEY}, {
654 	ERRDOS, 59, NT_STATUS_USER_SESSION_DELETED}, {
655 	ERRHRD, ERRgeneral, NT_STATUS_RESOURCE_LANG_NOT_FOUND}, {
656 	ERRDOS, ERRnoresource, NT_STATUS_INSUFF_SERVER_RESOURCES}, {
657 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_BUFFER_SIZE}, {
658 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_ADDRESS_COMPONENT}, {
659 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_ADDRESS_WILDCARD}, {
660 	ERRDOS, 68, NT_STATUS_TOO_MANY_ADDRESSES}, {
661 	ERRDOS, 52, NT_STATUS_ADDRESS_ALREADY_EXISTS}, {
662 	ERRDOS, 64, NT_STATUS_ADDRESS_CLOSED}, {
663 	ERRDOS, 64, NT_STATUS_CONNECTION_DISCONNECTED}, {
664 	ERRDOS, 64, NT_STATUS_CONNECTION_RESET}, {
665 	ERRDOS, 68, NT_STATUS_TOO_MANY_NODES}, {
666 	ERRDOS, 59, NT_STATUS_TRANSACTION_ABORTED}, {
667 	ERRDOS, 59, NT_STATUS_TRANSACTION_TIMED_OUT}, {
668 	ERRDOS, 59, NT_STATUS_TRANSACTION_NO_RELEASE}, {
669 	ERRDOS, 59, NT_STATUS_TRANSACTION_NO_MATCH}, {
670 	ERRDOS, 59, NT_STATUS_TRANSACTION_RESPONDED}, {
671 	ERRDOS, 59, NT_STATUS_TRANSACTION_INVALID_ID}, {
672 	ERRDOS, 59, NT_STATUS_TRANSACTION_INVALID_TYPE}, {
673 	ERRDOS, ERRunsup, NT_STATUS_NOT_SERVER_SESSION}, {
674 	ERRDOS, ERRunsup, NT_STATUS_NOT_CLIENT_SESSION}, {
675 	ERRHRD, ERRgeneral, NT_STATUS_CANNOT_LOAD_REGISTRY_FILE}, {
676 	ERRHRD, ERRgeneral, NT_STATUS_DEBUG_ATTACH_FAILED}, {
677 	ERRHRD, ERRgeneral, NT_STATUS_SYSTEM_PROCESS_TERMINATED}, {
678 	ERRHRD, ERRgeneral, NT_STATUS_DATA_NOT_ACCEPTED}, {
679 	ERRHRD, ERRgeneral, NT_STATUS_NO_BROWSER_SERVERS_FOUND}, {
680 	ERRHRD, ERRgeneral, NT_STATUS_VDM_HARD_ERROR}, {
681 	ERRHRD, ERRgeneral, NT_STATUS_DRIVER_CANCEL_TIMEOUT}, {
682 	ERRHRD, ERRgeneral, NT_STATUS_REPLY_MESSAGE_MISMATCH}, {
683 	ERRHRD, ERRgeneral, NT_STATUS_MAPPED_ALIGNMENT}, {
684 	ERRDOS, 193, NT_STATUS_IMAGE_CHECKSUM_MISMATCH}, {
685 	ERRHRD, ERRgeneral, NT_STATUS_LOST_WRITEBEHIND_DATA}, {
686 	ERRHRD, ERRgeneral, NT_STATUS_CLIENT_SERVER_PARAMETERS_INVALID}, {
687 	ERRSRV, ERRpasswordExpired, NT_STATUS_PASSWORD_MUST_CHANGE}, {
688 	ERRHRD, ERRgeneral, NT_STATUS_NOT_FOUND}, {
689 	ERRHRD, ERRgeneral, NT_STATUS_NOT_TINY_STREAM}, {
690 	ERRHRD, ERRgeneral, NT_STATUS_RECOVERY_FAILURE}, {
691 	ERRHRD, ERRgeneral, NT_STATUS_STACK_OVERFLOW_READ}, {
692 	ERRHRD, ERRgeneral, NT_STATUS_FAIL_CHECK}, {
693 	ERRHRD, ERRgeneral, NT_STATUS_DUPLICATE_OBJECTID}, {
694 	ERRHRD, ERRgeneral, NT_STATUS_OBJECTID_EXISTS}, {
695 	ERRHRD, ERRgeneral, NT_STATUS_CONVERT_TO_LARGE}, {
696 	ERRHRD, ERRgeneral, NT_STATUS_RETRY}, {
697 	ERRHRD, ERRgeneral, NT_STATUS_FOUND_OUT_OF_SCOPE}, {
698 	ERRHRD, ERRgeneral, NT_STATUS_ALLOCATE_BUCKET}, {
699 	ERRHRD, ERRgeneral, NT_STATUS_PROPSET_NOT_FOUND}, {
700 	ERRHRD, ERRgeneral, NT_STATUS_MARSHALL_OVERFLOW}, {
701 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_VARIANT}, {
702 	ERRHRD, ERRgeneral, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND}, {
703 	ERRDOS, ERRnoaccess, NT_STATUS_ACCOUNT_LOCKED_OUT}, {
704 	ERRDOS, ERRbadfid, NT_STATUS_HANDLE_NOT_CLOSABLE}, {
705 	ERRHRD, ERRgeneral, NT_STATUS_CONNECTION_REFUSED}, {
706 	ERRHRD, ERRgeneral, NT_STATUS_GRACEFUL_DISCONNECT}, {
707 	ERRHRD, ERRgeneral, NT_STATUS_ADDRESS_ALREADY_ASSOCIATED}, {
708 	ERRHRD, ERRgeneral, NT_STATUS_ADDRESS_NOT_ASSOCIATED}, {
709 	ERRHRD, ERRgeneral, NT_STATUS_CONNECTION_INVALID}, {
710 	ERRHRD, ERRgeneral, NT_STATUS_CONNECTION_ACTIVE}, {
711 	ERRHRD, ERRgeneral, NT_STATUS_NETWORK_UNREACHABLE}, {
712 	ERRHRD, ERRgeneral, NT_STATUS_HOST_UNREACHABLE}, {
713 	ERRHRD, ERRgeneral, NT_STATUS_PROTOCOL_UNREACHABLE}, {
714 	ERRHRD, ERRgeneral, NT_STATUS_PORT_UNREACHABLE}, {
715 	ERRHRD, ERRgeneral, NT_STATUS_REQUEST_ABORTED}, {
716 	ERRHRD, ERRgeneral, NT_STATUS_CONNECTION_ABORTED}, {
717 	ERRHRD, ERRgeneral, NT_STATUS_BAD_COMPRESSION_BUFFER}, {
718 	ERRHRD, ERRgeneral, NT_STATUS_USER_MAPPED_FILE}, {
719 	ERRHRD, ERRgeneral, NT_STATUS_AUDIT_FAILED}, {
720 	ERRHRD, ERRgeneral, NT_STATUS_TIMER_RESOLUTION_NOT_SET}, {
721 	ERRHRD, ERRgeneral, NT_STATUS_CONNECTION_COUNT_LIMIT}, {
722 	ERRHRD, ERRgeneral, NT_STATUS_LOGIN_TIME_RESTRICTION}, {
723 	ERRHRD, ERRgeneral, NT_STATUS_LOGIN_WKSTA_RESTRICTION}, {
724 	ERRDOS, 193, NT_STATUS_IMAGE_MP_UP_MISMATCH}, {
725 	ERRHRD, ERRgeneral, 0xc000024a}, {
726 	ERRHRD, ERRgeneral, 0xc000024b}, {
727 	ERRHRD, ERRgeneral, 0xc000024c}, {
728 	ERRHRD, ERRgeneral, 0xc000024d}, {
729 	ERRHRD, ERRgeneral, 0xc000024e}, {
730 	ERRHRD, ERRgeneral, 0xc000024f}, {
731 	ERRHRD, ERRgeneral, NT_STATUS_INSUFFICIENT_LOGON_INFO}, {
732 	ERRHRD, ERRgeneral, NT_STATUS_BAD_DLL_ENTRYPOINT}, {
733 	ERRHRD, ERRgeneral, NT_STATUS_BAD_SERVICE_ENTRYPOINT}, {
734 	ERRHRD, ERRgeneral, NT_STATUS_LPC_REPLY_LOST}, {
735 	ERRHRD, ERRgeneral, NT_STATUS_IP_ADDRESS_CONFLICT1}, {
736 	ERRHRD, ERRgeneral, NT_STATUS_IP_ADDRESS_CONFLICT2}, {
737 	ERRHRD, ERRgeneral, NT_STATUS_REGISTRY_QUOTA_LIMIT}, {
738 	ERRSRV, 3, NT_STATUS_PATH_NOT_COVERED}, {
739 	ERRHRD, ERRgeneral, NT_STATUS_NO_CALLBACK_ACTIVE}, {
740 	ERRHRD, ERRgeneral, NT_STATUS_LICENSE_QUOTA_EXCEEDED}, {
741 	ERRHRD, ERRgeneral, NT_STATUS_PWD_TOO_SHORT}, {
742 	ERRHRD, ERRgeneral, NT_STATUS_PWD_TOO_RECENT}, {
743 	ERRHRD, ERRgeneral, NT_STATUS_PWD_HISTORY_CONFLICT}, {
744 	ERRHRD, ERRgeneral, 0xc000025d}, {
745 	ERRHRD, ERRgeneral, NT_STATUS_PLUGPLAY_NO_DEVICE}, {
746 	ERRHRD, ERRgeneral, NT_STATUS_UNSUPPORTED_COMPRESSION}, {
747 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_HW_PROFILE}, {
748 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_PLUGPLAY_DEVICE_PATH}, {
749 	ERRDOS, 182, NT_STATUS_DRIVER_ORDINAL_NOT_FOUND}, {
750 	ERRDOS, 127, NT_STATUS_DRIVER_ENTRYPOINT_NOT_FOUND}, {
751 	ERRDOS, 288, NT_STATUS_RESOURCE_NOT_OWNED}, {
752 	ERRDOS, ErrTooManyLinks, NT_STATUS_TOO_MANY_LINKS}, {
753 	ERRHRD, ERRgeneral, NT_STATUS_QUOTA_LIST_INCONSISTENT}, {
754 	ERRHRD, ERRgeneral, NT_STATUS_FILE_IS_OFFLINE}, {
755 	ERRDOS, 21, 0xc000026e}, {
756 	ERRDOS, 161, 0xc0000281}, {
757 	ERRDOS, ERRnoaccess, 0xc000028a}, {
758 	ERRDOS, ERRnoaccess, 0xc000028b}, {
759 	ERRHRD, ERRgeneral, 0xc000028c}, {
760 	ERRDOS, ERRnoaccess, 0xc000028d}, {
761 	ERRDOS, ERRnoaccess, 0xc000028e}, {
762 	ERRDOS, ERRnoaccess, 0xc000028f}, {
763 	ERRDOS, ERRnoaccess, 0xc0000290}, {
764 	ERRDOS, ERRbadfunc, 0xc000029c}, {
765 	ERRDOS, ERRsymlink, NT_STATUS_STOPPED_ON_SYMLINK}, {
766 	ERRDOS, ERRinvlevel, 0x007c0001}, {
767 	0, 0, 0 }
768 };
769 
770 /*****************************************************************************
771  Print an error message from the status code
772  *****************************************************************************/
773 static void
cifs_print_status(__u32 status_code)774 cifs_print_status(__u32 status_code)
775 {
776 	int idx = 0;
777 
778 	while (nt_errs[idx].nt_errstr != NULL) {
779 		if (((nt_errs[idx].nt_errcode) & 0xFFFFFF) ==
780 		    (status_code & 0xFFFFFF)) {
781 			pr_notice("Status code returned 0x%08x %s\n",
782 				  status_code, nt_errs[idx].nt_errstr);
783 		}
784 		idx++;
785 	}
786 	return;
787 }
788 
789 
790 static void
ntstatus_to_dos(__u32 ntstatus,__u8 * eclass,__u16 * ecode)791 ntstatus_to_dos(__u32 ntstatus, __u8 *eclass, __u16 *ecode)
792 {
793 	int i;
794 	if (ntstatus == 0) {
795 		*eclass = 0;
796 		*ecode = 0;
797 		return;
798 	}
799 	for (i = 0; ntstatus_to_dos_map[i].ntstatus; i++) {
800 		if (ntstatus == ntstatus_to_dos_map[i].ntstatus) {
801 			*eclass = ntstatus_to_dos_map[i].dos_class;
802 			*ecode = ntstatus_to_dos_map[i].dos_code;
803 			return;
804 		}
805 	}
806 	*eclass = ERRHRD;
807 	*ecode = ERRgeneral;
808 }
809 
810 int
map_smb_to_linux_error(char * buf,bool logErr)811 map_smb_to_linux_error(char *buf, bool logErr)
812 {
813 	struct smb_hdr *smb = (struct smb_hdr *)buf;
814 	unsigned int i;
815 	int rc = -EIO;	/* if transport error smb error may not be set */
816 	__u8 smberrclass;
817 	__u16 smberrcode;
818 
819 	/* BB if NT Status codes - map NT BB */
820 
821 	/* old style smb error codes */
822 	if (smb->Status.CifsError == 0)
823 		return 0;
824 
825 	if (smb->Flags2 & SMBFLG2_ERR_STATUS) {
826 		/* translate the newer STATUS codes to old style SMB errors
827 		 * and then to POSIX errors */
828 		__u32 err = le32_to_cpu(smb->Status.CifsError);
829 		if (logErr && (err != (NT_STATUS_MORE_PROCESSING_REQUIRED)))
830 			cifs_print_status(err);
831 		else if (cifsFYI & CIFS_RC)
832 			cifs_print_status(err);
833 		ntstatus_to_dos(err, &smberrclass, &smberrcode);
834 	} else {
835 		smberrclass = smb->Status.DosError.ErrorClass;
836 		smberrcode = le16_to_cpu(smb->Status.DosError.Error);
837 	}
838 
839 	/* old style errors */
840 
841 	/* DOS class smb error codes - map DOS */
842 	if (smberrclass == ERRDOS) {
843 		/* 1 byte field no need to byte reverse */
844 		for (i = 0;
845 		     i <
846 		     sizeof(mapping_table_ERRDOS) /
847 		     sizeof(struct smb_to_posix_error); i++) {
848 			if (mapping_table_ERRDOS[i].smb_err == 0)
849 				break;
850 			else if (mapping_table_ERRDOS[i].smb_err ==
851 								smberrcode) {
852 				rc = mapping_table_ERRDOS[i].posix_code;
853 				break;
854 			}
855 			/* else try next error mapping one to see if match */
856 		}
857 	} else if (smberrclass == ERRSRV) {
858 		/* server class of error codes */
859 		for (i = 0;
860 		     i <
861 		     sizeof(mapping_table_ERRSRV) /
862 		     sizeof(struct smb_to_posix_error); i++) {
863 			if (mapping_table_ERRSRV[i].smb_err == 0)
864 				break;
865 			else if (mapping_table_ERRSRV[i].smb_err ==
866 								smberrcode) {
867 				rc = mapping_table_ERRSRV[i].posix_code;
868 				break;
869 			}
870 			/* else try next error mapping to see if match */
871 		}
872 	}
873 	/* else ERRHRD class errors or junk  - return EIO */
874 
875 	cifs_dbg(FYI, "Mapping smb error code 0x%x to POSIX err %d\n",
876 		 le32_to_cpu(smb->Status.CifsError), rc);
877 
878 	/* generic corrective action e.g. reconnect SMB session on
879 	 * ERRbaduid could be added */
880 
881 	return rc;
882 }
883 
884 int
map_and_check_smb_error(struct mid_q_entry * mid,bool logErr)885 map_and_check_smb_error(struct mid_q_entry *mid, bool logErr)
886 {
887 	int rc;
888 	struct smb_hdr *smb = (struct smb_hdr *)mid->resp_buf;
889 
890 	rc = map_smb_to_linux_error((char *)smb, logErr);
891 	if (rc == -EACCES && !(smb->Flags2 & SMBFLG2_ERR_STATUS)) {
892 		/* possible ERRBaduid */
893 		__u8 class = smb->Status.DosError.ErrorClass;
894 		__u16 code = le16_to_cpu(smb->Status.DosError.Error);
895 
896 		/* switch can be used to handle different errors */
897 		if (class == ERRSRV && code == ERRbaduid) {
898 			cifs_dbg(FYI, "Server returned 0x%x, reconnecting session...\n",
899 				code);
900 			spin_lock(&GlobalMid_Lock);
901 			if (mid->server->tcpStatus != CifsExiting)
902 				mid->server->tcpStatus = CifsNeedReconnect;
903 			spin_unlock(&GlobalMid_Lock);
904 		}
905 	}
906 
907 	return rc;
908 }
909 
910 
911 /*
912  * calculate the size of the SMB message based on the fixed header
913  * portion, the number of word parameters and the data portion of the message
914  */
915 unsigned int
smbCalcSize(void * buf,struct TCP_Server_Info * server)916 smbCalcSize(void *buf, struct TCP_Server_Info *server)
917 {
918 	struct smb_hdr *ptr = (struct smb_hdr *)buf;
919 	return (sizeof(struct smb_hdr) + (2 * ptr->WordCount) +
920 		2 /* size of the bcc field */ + get_bcc(ptr));
921 }
922 
923 /* The following are taken from fs/ntfs/util.c */
924 
925 #define NTFS_TIME_OFFSET ((u64)(369*365 + 89) * 24 * 3600 * 10000000)
926 
927 /*
928  * Convert the NT UTC (based 1601-01-01, in hundred nanosecond units)
929  * into Unix UTC (based 1970-01-01, in seconds).
930  */
931 struct timespec64
cifs_NTtimeToUnix(__le64 ntutc)932 cifs_NTtimeToUnix(__le64 ntutc)
933 {
934 	struct timespec64 ts;
935 	/* BB what about the timezone? BB */
936 
937 	/* Subtract the NTFS time offset, then convert to 1s intervals. */
938 	s64 t = le64_to_cpu(ntutc) - NTFS_TIME_OFFSET;
939 	u64 abs_t;
940 
941 	/*
942 	 * Unfortunately can not use normal 64 bit division on 32 bit arch, but
943 	 * the alternative, do_div, does not work with negative numbers so have
944 	 * to special case them
945 	 */
946 	if (t < 0) {
947 		abs_t = -t;
948 		ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
949 		ts.tv_nsec = -ts.tv_nsec;
950 		ts.tv_sec = -abs_t;
951 	} else {
952 		abs_t = t;
953 		ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
954 		ts.tv_sec = abs_t;
955 	}
956 
957 	return ts;
958 }
959 
960 /* Convert the Unix UTC into NT UTC. */
961 u64
cifs_UnixTimeToNT(struct timespec64 t)962 cifs_UnixTimeToNT(struct timespec64 t)
963 {
964 	/* Convert to 100ns intervals and then add the NTFS time offset. */
965 	return (u64) t.tv_sec * 10000000 + t.tv_nsec/100 + NTFS_TIME_OFFSET;
966 }
967 
968 static const int total_days_of_prev_months[] = {
969 	0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
970 };
971 
cnvrtDosUnixTm(__le16 le_date,__le16 le_time,int offset)972 struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
973 {
974 	struct timespec64 ts;
975 	time64_t sec, days;
976 	int min, day, month, year;
977 	u16 date = le16_to_cpu(le_date);
978 	u16 time = le16_to_cpu(le_time);
979 	SMB_TIME *st = (SMB_TIME *)&time;
980 	SMB_DATE *sd = (SMB_DATE *)&date;
981 
982 	cifs_dbg(FYI, "date %d time %d\n", date, time);
983 
984 	sec = 2 * st->TwoSeconds;
985 	min = st->Minutes;
986 	if ((sec > 59) || (min > 59))
987 		cifs_dbg(VFS, "Invalid time min %d sec %lld\n", min, sec);
988 	sec += (min * 60);
989 	sec += 60 * 60 * st->Hours;
990 	if (st->Hours > 24)
991 		cifs_dbg(VFS, "Invalid hours %d\n", st->Hours);
992 	day = sd->Day;
993 	month = sd->Month;
994 	if (day < 1 || day > 31 || month < 1 || month > 12) {
995 		cifs_dbg(VFS, "Invalid date, month %d day: %d\n", month, day);
996 		day = clamp(day, 1, 31);
997 		month = clamp(month, 1, 12);
998 	}
999 	month -= 1;
1000 	days = day + total_days_of_prev_months[month];
1001 	days += 3652; /* account for difference in days between 1980 and 1970 */
1002 	year = sd->Year;
1003 	days += year * 365;
1004 	days += (year/4); /* leap year */
1005 	/* generalized leap year calculation is more complex, ie no leap year
1006 	for years/100 except for years/400, but since the maximum number for DOS
1007 	 year is 2**7, the last year is 1980+127, which means we need only
1008 	 consider 2 special case years, ie the years 2000 and 2100, and only
1009 	 adjust for the lack of leap year for the year 2100, as 2000 was a
1010 	 leap year (divisable by 400) */
1011 	if (year >= 120)  /* the year 2100 */
1012 		days = days - 1;  /* do not count leap year for the year 2100 */
1013 
1014 	/* adjust for leap year where we are still before leap day */
1015 	if (year != 120)
1016 		days -= ((year & 0x03) == 0) && (month < 2 ? 1 : 0);
1017 	sec += 24 * 60 * 60 * days;
1018 
1019 	ts.tv_sec = sec + offset;
1020 
1021 	/* cifs_dbg(FYI, "sec after cnvrt dos to unix time %d\n",sec); */
1022 
1023 	ts.tv_nsec = 0;
1024 	return ts;
1025 }
1026