Add large file support to Windows. Change large file support for Unix so

that it compiles automatically - without requiring special options on the
compiler command line. (CVS 781)

FossilOrigin-Name: 2008b56fe11e49d52e28f47d14ccd70504e6c094

manifest

@@ -1,5 +1,5 @@
-C Changes\sto\sinclude\sfiles\sso\sthat\sthe\s>2GB\sfile\spatch\swill\scompile\sunder\sBSD.\s(CVS\s780)
-D 2002-11-06T00:59:45
+C Add\slarge\sfile\ssupport\sto\sWindows.\s\sChange\slarge\sfile\ssupport\sfor\sUnix\sso\nthat\sit\scompiles\sautomatically\s-\swithout\srequiring\sspecial\soptions\son\sthe\ncompiler\scommand\sline.\s(CVS\s781)
+D 2002-11-06T14:08:11
 F Makefile.in d6c9a85c2a5e696843201d090dcf8bf2f8716f2a
 F Makefile.linux-gcc b86a99c493a5bfb402d1d9178dcdc4bd4b32f906
 F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@@ -30,9 +30,9 @@ F src/hash.h cd0433998bc1a3759d244e1637fe5a3c13b53bf8
 F src/insert.c 764300a0bd8074a2174946c0bf8a550bd833397a
 F src/main.c b95d7eeec90f86d05b6a064d07db34b7279e06d4
 F src/md5.c fe4f9c9c6f71dfc26af8da63e4d04489b1430565
-F src/os.c da4cd10aba649e0622b8e766a3e6717b25359703
-F src/os.h c7038373d137b46da7a1da7f8f662b91fb6926dd
-F src/pager.c baf50d8308c61d079086f532c70155cd22c6d07a
+F src/os.c ebe65e9a1c88535e367aaaae25ef087c1486b08d
+F src/os.h deac8efeac7767de931122c536ca253fdb70f2f8
+F src/pager.c 7d581b201d7284fa9dafde92cd5b737e3733c984
 F src/pager.h 6991c9c2dc5e4c7f2df4d4ba47d1c6458f763a32
 F src/parse.y 469c9636ff713e63c00234662209f11668671ae9
 F src/printf.c 5c50fc1da75c8f5bf432b1ad17d91d6653acd167
@@ -129,16 +129,16 @@ F www/arch.png 82ef36db1143828a7abc88b1e308a5f55d4336f4
 F www/arch.tcl 679a0c48817f71bc91d5911ef386e5ef35d4f178
 F www/audit.tcl 90e09d580f79c7efec0c7d6f447b7ec5c2dce5c0
 F www/c_interface.tcl e76c9fd609326c34cd45cd040b508b0e21908800
-F www/changes.tcl 9c47ef405cf8605b5ba3de4476b78d3f2420853c
+F www/changes.tcl 85480df78c2b95afdbee92fdfc01dfda9918a818
 F www/conflict.tcl 81dd21f9a679e60aae049e9dd8ab53d59570cda2
 F www/crosscompile.tcl 3622ebbe518927a3854a12de51344673eb2dd060
 F www/datatypes.tcl 0cb28565580554fa7e03e8fcb303e87ce57757ae
 F www/download.tcl 0932d7f4f0e8b2adbbd22fac73132f86e43ab4a9
 F www/dynload.tcl 02eb8273aa78cfa9070dd4501dca937fb22b466c
-F www/faq.tcl 7692f91e0b3f7ee9bb4387bc5028cb389dcc6546
+F www/faq.tcl 06276ff6c3e369374bb83034cc9d4a7d3a2a34a1
 F www/fileformat.tcl a4b5c2c6e89b7d42d09f97fd4d7bbd39cbf24936
 F www/formatchng.tcl b4449e065d2da38b6563bdf12cf46cfe1d4d765e
-F www/index.tcl c93b864e3c7313bbe5f86eec571479d438307173
+F www/index.tcl 7764032a802318a916ae747b047c9ad5149658a5
 F www/lang.tcl 6be4254a751ab183ec974fe65375f50230c777f3
 F www/mingw.tcl f1c7c0a7f53387dd9bb4f8c7e8571b7561510ebc
 F www/nulls.tcl 29497dac2bc5b437aa7e2e94577dad4d8933ed26
@@ -149,7 +149,7 @@ F www/speed.tcl a20a792738475b68756ea7a19321600f23d1d803
 F www/sqlite.tcl ae3dcfb077e53833b59d4fcc94d8a12c50a44098
 F www/tclsqlite.tcl 1db15abeb446aad0caf0b95b8b9579720e4ea331
 F www/vdbe.tcl 2013852c27a02a091d39a766bc87cff329f21218
-P 4caf624e9061fe7489a8e3c6892975036a2272d5
-R 89790936c953bb945d21f542c92f53cc
+P 81bb1aed5e9094a9655bd03614bb111d79896928
+R 2170efe21354495bba0abb7d147e0a86
 U drh
-Z 58e955a4900c7a886f46bf868041833c
+Z 7e2f109564ef517cfa10eb3df7a02ba0

manifest.uuid

@@ -1 +1 @@
-81bb1aed5e9094a9655bd03614bb111d79896928
+2008b56fe11e49d52e28f47d14ccd70504e6c094

src/os.c

@@ -14,8 +14,8 @@
 ** systems.  The purpose of this file is to provide a uniform abstraction
 ** on which the rest of SQLite can operate.
 */
+#include "os.h"          /* Must be first to enable large file support */
 #include "sqliteInt.h"
-#include "os.h"
 
 #if OS_UNIX
 # include <time.h>
@@ -544,7 +544,10 @@ int sqliteOsSeek(OsFile *id, off_t offset){
   return SQLITE_OK;
 #endif
 #if OS_WIN
-  SetFilePointer(id->h, offset, 0, FILE_BEGIN);
+  {
+    LONG upperBits = offset>>32;
+    SetFilePointer(id->h, offset, &upperBits, FILE_BEGIN);
+  }
   return SQLITE_OK;
 #endif
 }
@@ -580,8 +583,11 @@ int sqliteOsTruncate(OsFile *id, off_t nByte){
   return ftruncate(id->fd, nByte)==0 ? SQLITE_OK : SQLITE_IOERR;
 #endif
 #if OS_WIN
-  SetFilePointer(id->h, nByte, 0, FILE_BEGIN);
+  {
+    LONG upperBits = nByte>>32;
+    SetFilePointer(id->h, nByte, &upperBits, FILE_BEGIN);
     SetEndOfFile(id->h);
+  }
   return SQLITE_OK;
 #endif
 }
@@ -600,8 +606,10 @@ int sqliteOsFileSize(OsFile *id, off_t *pSize){
   return SQLITE_OK;
 #endif
 #if OS_WIN
+  DWORD upperBits, lowerBits;
   SimulateIOError(SQLITE_IOERR);
-  *pSize = GetFileSize(id->h, 0);
+  lowerBits = GetFileSize(id->h, &upperBits);
+  *pSize = (((off_t)upperBits)<<32) + lowerBits;
   return SQLITE_OK;
 #endif
 }

src/os.h

@@ -17,6 +17,18 @@
 #ifndef _SQLITE_OS_H_
 #define _SQLITE_OS_H_
 
+/*
+** These #defines should enable >2GB file support on Posix if the
+** underlying operating system supports it.  If the OS lacks
+** large file support, or if the OS is windows, these should be no-ops.
+*/
+#define _LARGE_FILE       1
+#define _FILE_OFFSET_BITS 64
+#define _LARGEFILE_SOURCE 1
+
+/*
+** Figure out if we are dealing with Unix or Windows.
+*/
 #ifndef OS_UNIX
 # ifndef OS_WIN
 #  if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__)
@@ -64,7 +76,11 @@
     HANDLE h;               /* Handle for accessing the file */
     int locked;             /* 0: unlocked, <0: write lock, >0: read lock */
   };
-  typedef int off_t;
+# ifdef _MSC_VER
+    typedef __int64 off_t;
+# else
+    typedef long long off_t;
+# endif
 # define SQLITE_TEMPNAME_SIZE (MAX_PATH+50)
 # define SQLITE_MIN_SLEEP_MS 1
 #endif

src/pager.c

@@ -18,11 +18,11 @@
 ** file simultaneously, or one process from reading the database while
 ** another is writing.
 **
-** @(#) $Id: pager.c,v 1.54 2002/11/05 23:03:03 drh Exp $
+** @(#) $Id: pager.c,v 1.55 2002/11/06 14:08:11 drh Exp $
 */
+#include "os.h"         /* Must be first to enable large file support */
 #include "sqliteInt.h"
 #include "pager.h"
-#include "os.h"
 #include <assert.h>
 #include <string.h>
 

www/changes.tcl

@@ -25,6 +25,11 @@ proc chng {date desc} {
   puts "<DD><P><UL>$desc</UL></P></DD>"
 }
 
+chng {2002 Nov ?? (2.7.4)} {
+<li>Database files can now grow to be up to 2^41 bytes.  The old limit
+    was 2^31 bytes.</li>
+}
+
 chng {2002 Oct 30 (2.7.3)} {
 <li>Various compiler compatibility fixes.</li>
 <li>Fix a bug in the "expr IN ()" operator.</li>

www/faq.tcl

@@ -1,7 +1,7 @@
 #
 # Run this script to generated a faq.html output file
 #
-set rcsid {$Id: faq.tcl,v 1.20 2002/11/05 23:24:38 drh Exp $}
+set rcsid {$Id: faq.tcl,v 1.21 2002/11/06 14:08:12 drh Exp $}
 
 puts {<html>
 <head>
@@ -311,21 +311,19 @@ ORDER BY name
 faq {
   Are there any known size limits to SQLite databases?
 } {
-  <p>Internally, SQLite can handle databases up to 2^41 bytes (2 terabytes)
-  in size.  But the backend interface to POSIX and Win32 limits files to
-  2^31 (2 gigabytes).  (See the next question for instructions on how
-  to relax this limit under POSIX.)</p>
+  <p>As of version 2.7.4, 
+  SQLite can handle databases up to 2^41 bytes (2 terabytes)
+  in size on both Windows and Unix.  Older version of SQLite
+  were limited to databases of 2^31 bytes (2 gigabytes).</p>
 
   <p>SQLite arbitrarily limits the amount of data in one row to 1 megabyte.
   There is a single #define in the source code that can be changed to raise
   this limit as high as 16 megabytes if desired.</p>
 
   <p>There is a theoretical limit of about 2^32 (4 billion) rows
-  in a single table, but there
-  is no way to test this limit without exceeding the maximum file size, so
-  it is not really an issue.  There is also a theoretical limit of about 2^32
-  tables and indices, but again it is not really possible to reach this
-  limit due to the file size constraint.</p>
+  in a single table, but this limit has never been tested.</p>
+  There is also a theoretical limit of about 2^32
+  tables and indices.</p>
 
   <p>The name and "CREATE TABLE" statement for a table must fit entirely
   within a 1-megabyte row of the SQLITE_MASTER table.  Other than this,
@@ -338,21 +336,6 @@ faq {
   may not exceed 255 characters in length.</p>
 }
 
-faq {
-  Are there any ways to increase the maximum database size limit above 2GB?
-} {
-  <p>For POSIX systems that support large files, you can increase the maximum
-  database size of SQLite by adding the following two options to your
-  compiler command line:</p>
-
-  <blockquote><pre>
-  -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
-  </pre></blockquote>
-
-  <p>The resulting library and "sqlite" executable should be able to work
-  with databases as large as 2^41 bytes (2 terabytes).</p>
-}
-
 faq {
   What is the maximum size of a VARCHAR in SQLite?
 } {

www/index.tcl

@@ -1,7 +1,7 @@
 #
 # Run this TCL script to generate HTML for the index.html file.
 #
-set rcsid {$Id: index.tcl,v 1.69 2002/10/19 20:13:51 drh Exp $}
+set rcsid {$Id: index.tcl,v 1.70 2002/11/06 14:08:12 drh Exp $}
 
 puts {<html>
 <head><title>SQLite: An Embeddable SQL Database Engine</title></head>
@@ -55,6 +55,7 @@ puts {<h2>Features</h2>
 <li>Atomic commit and rollback protect data integrity.</li>
 <li>Database files can be freely shared between machines with
     different byte orders.</li>
+<li>Supports databases up to 2 terabytes (2^41 bytes) in size.</li>
 <li>Small memory footprint: less than 25K lines of C code.</li>
 <li><a href="speed.html">Four times faster</a> than PostgreSQL.
     Twice as fast as SQLite 1.0.</li>