Fix a problem causing "PRAGMA journal_mode" to report the wrong journal mode

(wal instead of wal2) under some circumstances.

FossilOrigin-Name: 1d8d4f689653ce80157740e339f7f1b42479bf90d82b176d8202d0a49f428398

diff --git a/manifest b/manifest
index 5cf7e8b10d7dfa323a8181de53626fab37089918..f47ab23d2fc6d54e7125e3de1ea9127f92827c7c 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fixes\sfor\ssnapshots\sAPI\son\sthis\sbranch.\sAlso\sensure\sthat\sthe\ssnapshots\sAPI\ncannot\sbe\sused\swith\swal2\smode\sdatabases\s(for\snow\sanyhow).
-D 2018-12-05T16:31:02.698
+C Fix\sa\sproblem\scausing\s"PRAGMA\sjournal_mode"\sto\sreport\sthe\swrong\sjournal\smode\n(wal\sinstead\sof\swal2)\sunder\ssome\scircumstances.
+D 2018-12-05T17:14:03.651
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F Makefile.in a050c8670ea0d7b37b2192306cbb50d392acd9902b84e9b56f3444d006f97a6c
@@ -494,7 +494,7 @@ F src/os_setup.h 0dbaea40a7d36bf311613d31342e0b99e2536586
 F src/os_unix.c 711480e9152f221098ec2b0d4ef94dc798f08af649c34f5cd4dc2bbf40c4f556
 F src/os_win.c 85d9e532d0444ab6c16d7431490c2e279e282aa0917b0e988996b1ae0de5c5a0
 F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
-F src/pager.c dd88ccf7fa519d6e325a115af28cd528713ea4d33a510d6f202386df002f2e74
+F src/pager.c dc6d0acb3f89b4dcb801c86a0e722c1bde116e058c7216ff74341812a38bbdd9
 F src/pager.h 3abf6d65199fd0680b26a047c6167a96a4d6ead7535e02522b79f0fb27a3edec
 F src/parse.y 6840fe7c0b5eb4dd25ee5d075213bc8255ed4c0678d71bfb6744d0520d91c179
 F src/pcache.c 696a01f1a6370c1b50a09c15972bc3bee3333f8fcd1f2da8e9a76b1b062c59ee
@@ -589,8 +589,8 @@ F src/vdbesort.c 90aad5a92608f2dd771c96749beabdb562c9d881131a860a7a5bccf66dc3be7
 F src/vdbetrace.c 79d6dbbc479267b255a7de8080eee6e729928a0ef93ed9b0bfa5618875b48392
 F src/vtab.c 70188a745dc4e57d26e942681ff4b2912b7c8249ad5de3f60f0677b4337bcfaa
 F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
-F src/wal.c 2b9b1bc7eeb819b46b0abe0bf4d9c48a13df0989814bb213da1b480d4b1c8107
-F src/wal.h fc6113057f2950fc14631176b748293e216fb385ea8df665e6d259e37f8f7d21
+F src/wal.c c01f62932ae8458e77aed8846e819e167a52224c0a13f972c9e7d90354205911
+F src/wal.h d2a69695c84137f76e19a247a342cb02ab0131001b6f58153d94b71195bbd84d
 F src/walker.c fb94aadc9099ff9c6506d0a8b88d51266005bcaa265403f3d7caf732a562eb66
 F src/where.c 3818e8a736a05d2cb194e64399af707e367fbcc5c251d785804d02eaf121288e
 F src/whereInt.h f125f29fca80890768e0b2caa14f95db74b2dacd3a122a168f97aa7b64d6968f
@@ -1782,7 +1782,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 480be916c840e9e28010c22cf29a8396502c9e6387f31f750260c6290f58e9a1
-R 869a87f8972d12d94814188a57f87377
+P 19c61ab79458936ff4dfca46cf4d1fb1ab16d7bdb5024f502eb4339ec4eef32c
+R b8125f586e18293d9635394478d15d26
 U dan
-Z 200899075d870fbfb9b7c809d447f2d7
+Z 00401c2c33715960f0bf723cc059ce5c

diff --git a/manifest.uuid b/manifest.uuid
index 0754a48ec21ee984f424c9557fdb913bcccc22c5..ebdf4ef09b812556e8473e4e5fb5fbf7e7e6d5ea 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-19c61ab79458936ff4dfca46cf4d1fb1ab16d7bdb5024f502eb4339ec4eef32c
\ No newline at end of file
+1d8d4f689653ce80157740e339f7f1b42479bf90d82b176d8202d0a49f428398
\ No newline at end of file

diff --git a/src/pager.c b/src/pager.c
index 1dbbd4c6319f9671befb0d7a37b2c358a31a0803..72abf2f94fb51f559ad352fa2edc1e3d4690c241 100644 (file)
--- a/src/pager.c
+++ b/src/pager.c
@@ -3258,6 +3258,10 @@ static int pagerBeginReadTransaction(Pager *pPager){
   if( rc!=SQLITE_OK || changed ){
     pager_reset(pPager);
     if( USEFETCH(pPager) ) sqlite3OsUnfetch(pPager->fd, 0, 0);
+    assert( pPager->journalMode==PAGER_JOURNALMODE_WAL
+         || pPager->journalMode==PAGER_JOURNALMODE_WAL2
+    );
+    pPager->journalMode = sqlite3WalJournalMode(pPager->pWal);
   }
 
   return rc;

diff --git a/src/wal.c b/src/wal.c
index 97bb781d79eb9bb0f40c14ce5e9c3a487ba44bb9..ee5d2e177969803cec0dd54c8427779fda7cafb5 100644 (file)
--- a/src/wal.c
+++ b/src/wal.c
@@ -4641,4 +4641,12 @@ sqlite3_file *sqlite3WalFile(Wal *pWal){
   return pWal->apWalFd[0];
 }
 
+/* 
+** Return the journal mode used by this Wal object.
+*/
+int sqlite3WalJournalMode(Wal *pWal){
+  assert( pWal );
+  return (isWalMode2(pWal) ? PAGER_JOURNALMODE_WAL2 : PAGER_JOURNALMODE_WAL);
+}
+
 #endif /* #ifndef SQLITE_OMIT_WAL */

diff --git a/src/wal.h b/src/wal.h
index 7017e908ed39066f867222692a6a4cd92e770fa8..ccc2888f97554c59069b43e31e0bb12f1a39ad3d 100644 (file)
--- a/src/wal.h
+++ b/src/wal.h
@@ -45,6 +45,7 @@
 # define sqlite3WalFramesize(z)                  0
 # define sqlite3WalFindFrame(x,y,z)              0
 # define sqlite3WalFile(x)                       0
+# define sqlite3WalJournalMode(x)                0
 #else
 
 #define WAL_SAVEPOINT_NDATA 4
@@ -146,5 +147,8 @@ int sqlite3WalFramesize(Wal *pWal);
 /* Return the sqlite3_file object for the WAL file */
 sqlite3_file *sqlite3WalFile(Wal *pWal);
 
+/* Return the journal mode (WAL or WAL2) used by this Wal object. */
+int sqlite3WalJournalMode(Wal *pWal);
+
 #endif /* ifndef SQLITE_OMIT_WAL */
 #endif /* SQLITE_WAL_H */