The windows driver always allows other processes to write the database file

even if it only has read permission on the file.  This is an experimental
checkin - we still have not determined that this change is safe.  Ticket #1803. (CVS 3196)

FossilOrigin-Name: 4bf03c3bbc1303ed9b4059917e8d6a613b1510f3

manifest

@@ -1,5 +1,5 @@
-C Fix\stypo\sin\slang_analyze.html.\s(CVS\s3195)
-D 2006-05-31T11:12:01
+C The\swindows\sdriver\salways\sallows\sother\sprocesses\sto\swrite\sthe\sdatabase\sfile\neven\sif\sit\sonly\shas\sread\spermission\son\sthe\sfile.\s\sThis\sis\san\sexperimental\ncheckin\s-\swe\sstill\shave\snot\sdetermined\sthat\sthis\schange\sis\ssafe.\s\sTicket\s#1803.\s(CVS\s3196)
+D 2006-06-02T12:40:08
 F Makefile.in 5d8dff443383918b700e495de42ec65bc1c8865b
 F Makefile.linux-gcc 74ba0eadf88748a9ce3fd03d2a3ede2e6715baec
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -57,7 +57,7 @@ F src/os_test.c 49833426101f99aee4bb5f6a44b7c4b2029fda1c
 F src/os_test.h 903c93554c23d88f34f667f1979e4a1cee792af3
 F src/os_unix.c 17d91581a0ab478a06cb6f257b707a4c4a93e5a7
 F src/os_unix.h 5768d56d28240d3fe4537fac08cc85e4fb52279e
-F src/os_win.c 8ced9ac82670bbf77492961a2f7ff80a87f1404f
+F src/os_win.c f48550e191c7e37cd8e802b6a84433e9a3b84d3a
 F src/os_win.h 41a946bea10f61c158ce8645e7646b29d44f122b
 F src/pager.c ddd05666bb89808a516baef2c186d6a75887ae90
 F src/pager.h 43f32f3847421f7502cfbb66f4eb2302b8033818
@@ -356,7 +356,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P 9e0b83b81f13277b9da877bdd96c544ec66533f0
-R 266aa47eb3b01cf89f64731c0b52eebe
+P fba8ce8c383fa8e66bc2dd5a354f411ad2b83c6d
+R e8e28b68f68e385df9ce00b0c40a195e
 U drh
-Z fc1f4cfb1332111488a800cde342c7af
+Z 98e47813ae5d17f133d2a7209ac7086e

manifest.uuid

@@ -1 +1 @@
-fba8ce8c383fa8e66bc2dd5a354f411ad2b83c6d
+4bf03c3bbc1303ed9b4059917e8d6a613b1510f3

src/os_win.c

@@ -550,7 +550,7 @@ int sqlite3WinOpenReadWrite(
     if( h==INVALID_HANDLE_VALUE ){
       h = CreateFileW(zWide,
          GENERIC_READ,
-         FILE_SHARE_READ,
+         FILE_SHARE_READ | FILE_SHARE_WRITE,
          NULL,
          OPEN_ALWAYS,
          FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS,
@@ -587,7 +587,7 @@ int sqlite3WinOpenReadWrite(
     if( h==INVALID_HANDLE_VALUE ){
       h = CreateFileA(zFilename,
          GENERIC_READ,
-         FILE_SHARE_READ,
+         FILE_SHARE_READ | FILE_SHARE_WRITE,
          NULL,
          OPEN_ALWAYS,
          FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS,