1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
|
/* Copyright (C) Yuri Dario & 2000 MySQL AB
All the above parties has a full, independent copyright to
the following code, including the right to use the code in
any manner without any demands from the other parties.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA */
void _OS2errno( APIRET rc);
longlong _lseek64( int fd, longlong offset, int seektype);
int _lock64( int fd, int locktype, my_off_t start,
my_off_t length, myf MyFlags);
int _sopen64( const char *name, int oflag, int shflag, int mask);
//
// this class is used to define a global c++ variable, that
// is initialized before main() gets called.
//
class File64bit
{
public:
File64bit(); /* default constructor */
} initFile64bit;
static APIRET (* APIENTRY _DosOpenL)(PCSZ pszFileName,
PHFILE phf,
PULONG pulAction,
LONGLONG cbFile,
ULONG ulAttribute,
ULONG fsOpenFlags,
ULONG fsOpenMode,
PEAOP2 peaop2);
static APIRET (* APIENTRY _DosSetFilePtrL)(HFILE hFile,
LONGLONG ib,
ULONG method,
PLONGLONG ibActual);
static APIRET (* APIENTRY _DosSetFileLocksL)(HFILE hFile,
PFILELOCKL pflUnlock,
PFILELOCKL pflLock,
ULONG timeout,
ULONG flags);
#define EIO EINVAL
#define ESPIPE EBADSEEK
static unsigned char const errno_tab[] =
{
0 , EINVAL, ENOENT, ENOENT, EMFILE, /* 0..4 */
EACCES, EBADF, EIO, ENOMEM, EIO, /* 5..9 */
EINVAL, ENOEXEC,EINVAL, EINVAL, EINVAL, /* 10..14 */
ENOENT, EBUSY, EXDEV, ENOENT, EROFS, /* 15..19 */
EIO, EIO, EIO, EIO, EIO, /* 20..24 */
EIO, EIO, EIO, ENOSPC, EIO, /* 25..29 */
EIO, EIO, EACCES, EACCES, EIO, /* 30..34 */
EIO, EIO, EIO, EIO, ENOSPC, /* 35..39 */
EIO, EIO, EIO, EIO, EIO, /* 40..44 */
EIO, EIO, EIO, EIO, EIO, /* 45..49 */
EIO, EIO, EIO, EIO, EBUSY, /* 50..54 */
EIO, EIO, EIO, EIO, EIO, /* 55..59 */
EIO, ENOSPC, ENOSPC, EIO, EIO, /* 60..64 */
EACCES, EIO, EIO, EIO, EIO, /* 65..69 */
EIO, EIO, EIO, EROFS, EIO, /* 70..74 */
EIO, EIO, EIO, EIO, EIO, /* 75..79 */
EEXIST, EIO, ENOENT, EIO, EIO, /* 80..84 */
EIO, EIO, EINVAL, EIO, EAGAIN, /* 85..89 */
EIO, EIO, EIO, EIO, EIO, /* 90..94 */
EINTR, EIO, EIO, EIO, EACCES, /* 95..99 */
ENOMEM, EINVAL, EINVAL, ENOMEM, EINVAL, /* 100..104 */
EINVAL, ENOMEM, EIO, EACCES, EPIPE, /* 105..109 */
ENOENT, E2BIG, ENOSPC, ENOMEM, EBADF, /* 110..114 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 115..119 */
EINVAL, EINVAL, EINVAL, ENOENT, EINVAL, /* 120..124 */
ENOENT, ENOENT, ENOENT, ECHILD, ECHILD, /* 125..129 */
EACCES, EINVAL, ESPIPE, EINVAL, EINVAL, /* 130..134 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 135..139 */
EINVAL, EINVAL, EBUSY, EINVAL, EINVAL, /* 140..144 */
EINVAL, EINVAL, EINVAL, EBUSY, EINVAL, /* 145..149 */
EINVAL, EINVAL, ENOMEM, EINVAL, EINVAL, /* 150..154 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 155..159 */
EINVAL, EINVAL, EINVAL, EINVAL, EAGAIN, /* 160..164 */
EINVAL, EINVAL, EACCES, EINVAL, EINVAL, /* 165..169 */
EBUSY, EINVAL, EINVAL, EINVAL, EINVAL, /* 170..174 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 175..179 */
EINVAL, EINVAL, EINVAL, EINVAL, ECHILD, /* 180..184 */
EINVAL, EINVAL, ENOENT, EINVAL, EINVAL, /* 185..189 */
ENOEXEC,ENOEXEC,ENOEXEC,ENOEXEC,ENOEXEC, /* 190..194 */
ENOEXEC,ENOEXEC,ENOEXEC,ENOEXEC,ENOEXEC, /* 195..199 */
ENOEXEC,ENOEXEC,ENOEXEC,ENOENT, EINVAL, /* 200..204 */
EINVAL, ENAMETOOLONG, EINVAL, EINVAL, EINVAL, /* 205..209 */
EINVAL, EINVAL, EACCES, ENOEXEC,ENOEXEC, /* 210..214 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 215..219 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 220..224 */
EINVAL, EINVAL, EINVAL, ECHILD, EINVAL, /* 225..229 */
EINVAL, EBUSY, EAGAIN, ENOTCONN, EINVAL, /* 230..234 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 235..239 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 240..244 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 245..249 */
EACCES, EACCES, EINVAL, ENOENT, EINVAL, /* 250..254 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 255..259 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 260..264 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 265..269 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 270..274 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 275..279 */
EINVAL, EINVAL, EINVAL, EINVAL, EEXIST, /* 280..284 */
EEXIST, EINVAL, EINVAL, EINVAL, EINVAL, /* 285..289 */
ENOMEM, EMFILE, EINVAL, EINVAL, EINVAL, /* 290..294 */
EINVAL, EINVAL, EINVAL, EINVAL, EINVAL, /* 295..299 */
EINVAL, EBUSY, EINVAL, ESRCH, EINVAL, /* 300..304 */
ESRCH, EINVAL, EINVAL, EINVAL, ESRCH, /* 305..309 */
EINVAL, ENOMEM, EINVAL, EINVAL, EINVAL, /* 310..314 */
EINVAL, E2BIG, ENOENT, EIO, EIO, /* 315..319 */
EINVAL, EINVAL, EINVAL, EINVAL, EAGAIN, /* 320..324 */
EINVAL, EINVAL, EINVAL, EIO, ENOENT, /* 325..329 */
EACCES, EACCES, EACCES, ENOENT, ENOMEM /* 330..334 */
};
/*
* Initialize 64bit file access: dynamic load of WSeB API
*/
File64bit :: File64bit()
{
HMODULE hDoscalls;
if (DosQueryModuleHandle("DOSCALLS", &hDoscalls) != NO_ERROR)
return;
if (DosQueryProcAddr(hDoscalls, 981, NULL, (PFN *)&_DosOpenL) != NO_ERROR)
return;
if (DosQueryProcAddr(hDoscalls, 988, NULL, (PFN *)&_DosSetFilePtrL) != NO_ERROR) {
_DosOpenL = NULL;
return;
}
if (DosQueryProcAddr(hDoscalls, 986, NULL, (PFN *)&_DosSetFileLocksL) != NO_ERROR) {
_DosOpenL = NULL;
_DosSetFilePtrL = NULL;
return;
}
// notify success
#ifdef MYSQL_SERVER
printf( "WSeB 64bit file API loaded.\n");
#endif
}
void _OS2errno( APIRET rc)
{
if (rc >= sizeof (errno_tab))
errno = EINVAL;
else
errno = errno_tab[rc];
}
longlong _lseek64( int fd, longlong offset, int seektype)
{
APIRET rc;
longlong actual;
if (_DosSetFilePtrL)
rc = _DosSetFilePtrL( fd, offset, seektype, &actual);
else {
ULONG ulActual;
rc = DosSetFilePtr( fd, (long) offset, seektype, &ulActual);
actual = ulActual;
}
if (!rc)
return( actual);/* NO_ERROR */
// set errno
_OS2errno( rc);
// seek failed
return(-1);
}
inline _SetFileLocksL(HFILE hFile,
PFILELOCKL pflUnlock,
PFILELOCKL pflLock,
ULONG timeout,
ULONG flags)
{
if (_DosSetFileLocksL)
return _DosSetFileLocksL( hFile, pflUnlock, pflLock, timeout, flags);
FILELOCK flUnlock = { pflUnlock->lOffset, pflUnlock->lRange };
FILELOCK flLock = { pflLock->lOffset, pflLock->lRange };
return DosSetFileLocks( hFile, &flUnlock, &flLock, timeout, flags);
}
int _lock64( int fd, int locktype, my_off_t start,
my_off_t length, myf MyFlags)
{
FILELOCKL LockArea = {0,0}, UnlockArea = {0,0};
ULONG readonly = 0;
APIRET rc = -1;
switch( locktype) {
case F_UNLCK:
UnlockArea.lOffset = start;
UnlockArea.lRange = length ? length : LONGLONG_MAX;
break;
case F_RDLCK:
case F_WRLCK:
LockArea.lOffset = start;
LockArea.lRange = length ? length : LONGLONG_MAX;
readonly = (locktype == F_RDLCK ? 1 : 0);
break;
default:
errno = EINVAL;
rc = -1;
break;
}
if (MyFlags & MY_DONT_WAIT) {
rc = _SetFileLocksL( fd, &UnlockArea, &LockArea, 0, readonly);
//printf( "fd %d, locktype %d, rc %d (dont_wait)\n", fd, locktype, rc);
if (rc == 33) { /* Lock Violation */
DBUG_PRINT("info",("Was locked, trying with timeout"));
rc = _SetFileLocksL( fd, &UnlockArea, &LockArea, 1 * 1000, readonly);
//printf( "fd %d, locktype %d, rc %d (dont_wait with timeout)\n", fd, locktype, rc);
}
} else {
while( rc = _SetFileLocksL( fd, &UnlockArea, &LockArea, 0, readonly) && (rc == 33)) {
printf(".");
DosSleep(1 * 1000);
}
//printf( "fd %d, locktype %d, rc %d (wait2)\n", fd, locktype, rc);
}
if (!rc)
return( 0);/* NO_ERROR */
// set errno
_OS2errno( rc);
// lock failed
return(-1);
}
int _sopen64( const char *name, int oflag, int shflag, int mask)
{
int fail_errno;
APIRET rc = 0;
HFILE hf = 0;
ULONG ulAction = 0;
LONGLONG cbFile = 0;
ULONG ulAttribute = FILE_NORMAL;
ULONG fsOpenFlags = 0;
ULONG fsOpenMode = 0;
/* Extract the access mode and sharing mode bits. */
fsOpenMode = (shflag & 0xFF) | (oflag & 0x03);
/* Translate ERROR_OPEN_FAILED to ENOENT unless O_EXCL is set (see
below). */
fail_errno = ENOENT;
/* Compute `open_flag' depending on `flags'. Note that _SO_CREAT is
set for O_CREAT. */
if (oflag & O_CREAT)
{
if (oflag & O_EXCL)
{
fsOpenFlags = OPEN_ACTION_FAIL_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW;
fail_errno = EEXIST;
}
else if (oflag & O_TRUNC)
fsOpenFlags = OPEN_ACTION_REPLACE_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW;
else
fsOpenFlags = OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW;
if (mask & S_IWRITE)
ulAttribute = FILE_NORMAL;
else
ulAttribute = FILE_READONLY;
}
else if (oflag & O_TRUNC)
fsOpenFlags = OPEN_ACTION_REPLACE_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW;
else
fsOpenFlags = OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW;
/* Try to open the file and handle errors. */
if (_DosOpenL)
rc = _DosOpenL( name, &hf, &ulAction, cbFile,
ulAttribute, fsOpenFlags, fsOpenMode, NULL);
else
rc = DosOpen( name, &hf, &ulAction, (LONG) cbFile,
ulAttribute, fsOpenFlags, fsOpenMode, NULL);
if (rc == ERROR_OPEN_FAILED)
{
errno = fail_errno;
return -1;
}
if (rc != 0)
{
// set errno
_OS2errno( rc);
return -1;
}
if (oflag & O_APPEND)
_lseek64( hf, 0L, SEEK_END);
return hf;
}
inline int open( const char *name, int oflag)
{
return _sopen64( name, oflag, OPEN_SHARE_DENYNONE, S_IREAD | S_IWRITE);
}
inline int open( const char *name, int oflag, int mask)
{
return _sopen64( name, oflag, OPEN_SHARE_DENYNONE, mask);
}
inline int sopen( const char *name, int oflag, int shflag, int mask)
{
return _sopen64( name, oflag, shflag, mask);
}
|
