From: mistachkin <mistachkin@noemail.net>
Date: Thu, 9 Nov 2017 18:21:51 +0000 (+0000)
Subject: Corrections to Win32 lock detection for SHM files.
X-Git-Tag: version-3.22.0~199^2~12
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a5150656494e915b675498f8b6b888a336997bec;p=thirdparty%2Fsqlite.git

Corrections to Win32 lock detection for SHM files.

FossilOrigin-Name: 3a91be975daee65c3e1199855613066015d5df8ad44ababdef31d1c698b5e746
---

diff --git a/manifest b/manifest
index 021c050212..eb409a8a6a 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Corrections\sto\sthe\sWin32\sporting\schanges\son\sthis\sbranch.
-D 2017-11-09T17:29:18.701
+C Corrections\sto\sWin32\slock\sdetection\sfor\sSHM\sfiles.
+D 2017-11-09T18:21:51.933
 F Makefile.in 5bae3f2f3d42f2ad52b141562d74872c97ac0fca6c54953c91bb150a0e6427a8
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc 3a5cb477ec3ce5274663b693164e349db63348667cd45bad78cc13d580b691e2
@@ -448,7 +448,7 @@ F src/os.h 48388821692e87da174ea198bf96b1b2d9d83be5dfc908f673ee21fafbe0d432
 F src/os_common.h b2f4707a603e36811d9b1a13278bffd757857b85
 F src/os_setup.h 0dbaea40a7d36bf311613d31342e0b99e2536586
 F src/os_unix.c e87cef0bb894b94d96ee3af210be669549d111c580817d14818101b992640767
-F src/os_win.c ce0b1da0d41a1cc78e33431c72fb4b53f3247b3884841ca0a988761565488824
+F src/os_win.c eac2f14343eaf9ff8c02d7025ce459f64dc1334c1f6739be5b6595aabed32ca2
 F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
 F src/pager.c 07cf850241667874fcce9d7d924c814305e499b26c804322e2261247b5921903
 F src/pager.h 581698f2177e8bd4008fe4760898ce20b6133d1df22139b9101b5155f900df7a
@@ -1669,7 +1669,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 0a7d416c4c43632725dc89cda8667cd9726b5152ee4692e4d0c9e2031e60cfb4
-R 83920a29a292bf4d0aadf8e0cc58f982
+P 0b26a5a26d700e20eea5ebbd620af0af6f2d61c652cfca5b8563267588cb2be6
+R e599061360fdeb01478e7f6faea2d0b3
 U mistachkin
-Z f20b1547624a9a7c878450951251f899
+Z 310f1e71824409858101a715db0b42e2
diff --git a/manifest.uuid b/manifest.uuid
index f22324c47b..238938df65 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-0b26a5a26d700e20eea5ebbd620af0af6f2d61c652cfca5b8563267588cb2be6
\ No newline at end of file
+3a91be975daee65c3e1199855613066015d5df8ad44ababdef31d1c698b5e746
\ No newline at end of file
diff --git a/src/os_win.c b/src/os_win.c
index d434cfe927..34069351df 100644
--- a/src/os_win.c
+++ b/src/os_win.c
@@ -2105,7 +2105,8 @@ static int winIoerrRetryDelay = SQLITE_WIN32_IOERR_RETRY_DELAY;
 ** to file locking.
 */
 #if !defined(winIsLockingError)
-#define winIsLockingError(a) (((a)==ERROR_LOCK_VIOLATION)       || \
+#define winIsLockingError(a) (((a)==ERROR_ACCESS_DENIED)        || \
+                              ((a)==ERROR_LOCK_VIOLATION)       || \
                               ((a)==ERROR_IO_PENDING))
 #endif
 
@@ -3867,14 +3868,16 @@ static int winGetShmDmsLockType(
   pOverlapped = &overlapped;
 #endif
   if( !osWriteFile(pFile->h, &notUsed1, 1, &notUsed2, pOverlapped) ){
+    DWORD lastErrno = osGetLastError();
     if( !osReadFile(pFile->h, &notUsed1, 1, &notUsed2, pOverlapped) ){
-      if( winIsLockingError(osGetLastError()) ){
+      lastErrno = osGetLastError();
+      if( winIsLockingError(lastErrno) ){
         *pLockType = WINSHM_WRLCK;
       }else{
         return SQLITE_IOERR_READ;
       }
     }else{
-      if( winIsLockingError(osGetLastError()) ){
+      if( winIsLockingError(lastErrno) ){
         *pLockType = WINSHM_RDLCK;
       }else{
         return SQLITE_IOERR_WRITE;