12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "jni.h"
27 #include "jni_util.h"
28 #include "jvm.h"
29 #include "io_util.h"
30 #include "io_util_md.h"
31 #include <stdio.h>
32
33 #include <wchar.h>
34 #include <io.h>
35 #include <fcntl.h>
36 #include <errno.h>
37 #include <string.h>
38 #include <sys/types.h>
39 #include <sys/stat.h>
40 #include <limits.h>
41 #include <wincon.h>
42
43 extern jboolean onNT = JNI_FALSE;
44
45 static DWORD MAX_INPUT_EVENTS = 2000;
46
47 void
48 initializeWindowsVersion() {
49 OSVERSIONINFO ver;
50 ver.dwOSVersionInfoSize = sizeof(ver);
51 GetVersionEx(&ver);
571 DWORD lowPos = 0;
572 long highPos = 0;
573 DWORD op = FILE_CURRENT;
574 HANDLE h = (HANDLE)fd;
575
576 if (whence == SEEK_END) {
577 op = FILE_END;
578 }
579 if (whence == SEEK_CUR) {
580 op = FILE_CURRENT;
581 }
582 if (whence == SEEK_SET) {
583 op = FILE_BEGIN;
584 }
585
586 distance.QuadPart = offset;
587 if (SetFilePointerEx(h, distance, &pos, op) == 0) {
588 return -1;
589 }
590 return long_to_jlong(pos.QuadPart);
591 }
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include "jni.h"
27 #include "jni_util.h"
28 #include "jvm.h"
29 #include "io_util.h"
30 #include "io_util_md.h"
31 #include <stdio.h>
32 #include <windows.h>
33
34 #include <wchar.h>
35 #include <io.h>
36 #include <fcntl.h>
37 #include <errno.h>
38 #include <string.h>
39 #include <sys/types.h>
40 #include <sys/stat.h>
41 #include <limits.h>
42 #include <wincon.h>
43
44 extern jboolean onNT = JNI_FALSE;
45
46 static DWORD MAX_INPUT_EVENTS = 2000;
47
48 void
49 initializeWindowsVersion() {
50 OSVERSIONINFO ver;
51 ver.dwOSVersionInfoSize = sizeof(ver);
52 GetVersionEx(&ver);
572 DWORD lowPos = 0;
573 long highPos = 0;
574 DWORD op = FILE_CURRENT;
575 HANDLE h = (HANDLE)fd;
576
577 if (whence == SEEK_END) {
578 op = FILE_END;
579 }
580 if (whence == SEEK_CUR) {
581 op = FILE_CURRENT;
582 }
583 if (whence == SEEK_SET) {
584 op = FILE_BEGIN;
585 }
586
587 distance.QuadPart = offset;
588 if (SetFilePointerEx(h, distance, &pos, op) == 0) {
589 return -1;
590 }
591 return long_to_jlong(pos.QuadPart);
592 }
593
594 size_t
595 getLastErrorString(char *utf8_jvmErrorMsg, size_t cbErrorMsg)
596 {
597 size_t n = 0;
598 if (cbErrorMsg > 0) {
599 BOOLEAN noError = FALSE;
600 WCHAR *utf16_osErrorMsg = (WCHAR *)malloc(cbErrorMsg*sizeof(WCHAR));
601 if (utf16_osErrorMsg == NULL) {
602 // OOM accident
603 strncpy(utf8_jvmErrorMsg, "Out of memory", cbErrorMsg);
604 // truncate if too long
605 utf8_jvmErrorMsg[cbErrorMsg - 1] = '\0';
606 n = strlen(utf8_jvmErrorMsg);
607 } else {
608 DWORD errval = GetLastError();
609 if (errval != 0) {
610 // WIN32 error
611 n = (size_t)FormatMessageW(
612 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
613 NULL,
614 errval,
615 0,
616 utf16_osErrorMsg,
617 (DWORD)cbErrorMsg,
618 NULL);
619 if (n > 3) {
620 // Drop final '.', CR, LF
621 if (utf16_osErrorMsg[n - 1] == L'\n') --n;
622 if (utf16_osErrorMsg[n - 1] == L'\r') --n;
623 if (utf16_osErrorMsg[n - 1] == L'.') --n;
624 utf16_osErrorMsg[n] = L'\0';
625 }
626 } else if (errno != 0) {
627 // C runtime error that has no corresponding WIN32 error code
628 const WCHAR *rtError = _wcserror(errno);
629 if (rtError != NULL) {
630 wcsncpy(utf16_osErrorMsg, rtError, cbErrorMsg);
631 // truncate if too long
632 utf16_osErrorMsg[cbErrorMsg - 1] = L'\0';
633 n = wcslen(utf16_osErrorMsg);
634 }
635 } else
636 noError = TRUE; //OS has no error to report
637
638 if (!noError) {
639 if (n > 0) {
640 n = WideCharToMultiByte(
641 CP_UTF8,
642 0,
643 utf16_osErrorMsg,
644 n,
645 utf8_jvmErrorMsg,
646 cbErrorMsg,
647 NULL,
648 NULL);
649
650 // no way to die
651 if (n > 0)
652 utf8_jvmErrorMsg[min(cbErrorMsg - 1, n)] = '\0';
653 }
654
655 if (n <= 0) {
656 strncpy(utf8_jvmErrorMsg, "Secondary error while OS message extraction", cbErrorMsg);
657 // truncate if too long
658 utf8_jvmErrorMsg[cbErrorMsg - 1] = '\0';
659 n = strlen(utf8_jvmErrorMsg);
660 }
661 }
662 free(utf16_osErrorMsg);
663 }
664 }
665 return n;
666 }
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