Only error out on a database file move when attempting to start a write
transaction. Assume read transactions are still safe. And make the error SQLITE_READONLY_DBMOVED instead of SQLITE_IOERR_NODB. FossilOrigin-Name: 28348f2ada98c616241a51aecb70b63e87e6ddbb
This commit is contained in:
drh
parent
1b1f30bb5e
commit
3fee8a63c8
21
manifest
21
manifest
@ -1,5 +1,5 @@
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C Add\scode\sto\sdetect\sif\sthe\sdatabase\sfile\sis\smoved\sor\sdeleted\sout\sfrom\sunder\nSQLite\sand\sreturn\san\sSQLITE_IOERR_NODB.
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D 2013-12-06T15:37:35.675
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C Only\serror\sout\son\sa\sdatabase\sfile\smove\swhen\sattempting\sto\sstart\sa\swrite\ntransaction.\s\sAssume\sread\stransactions\sare\sstill\ssafe.\s\sAnd\smake\sthe\serror\nSQLITE_READONLY_DBMOVED\sinstead\sof\sSQLITE_IOERR_NODB.
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D 2013-12-06T17:23:38.532
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in e1a9b4258bbde53f5636f4e238c65b7e11459e2b
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@ -207,7 +207,7 @@ F src/os.h 4a46270a64e9193af4a0aaa3bc2c66dc07c29b3f
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F src/os_common.h 92815ed65f805560b66166e3583470ff94478f04
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F src/os_unix.c f076587029285554a3a65d30d0e71d50cd61f41f
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F src/os_win.c f149798adb6f32db835b2c9f9fac83d86015e004
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F src/pager.c 3648e602d484020d10cb514b04ef8f445ed06f30
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F src/pager.c 938874307e1b07a98a181cbab41c5625f2aa1666
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F src/pager.h f094af9f6ececfaa8a1e93876905a4f34233fb0c
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F src/parse.y acee1a9958539e21263362b194594c5255ad2fca
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F src/pcache.c f8043b433a57aba85384a531e3937a804432a346
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@ -221,7 +221,7 @@ F src/resolve.c 7eda9097b29fcf3d2b42fdc17d1de672134e09b6
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F src/rowset.c 64655f1a627c9c212d9ab497899e7424a34222e0
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F src/select.c d41381d80a22d3a83352aeca274cccf264ac277a
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F src/shell.c 936a72ff784efff3832cce274a96ed0b036e6758
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F src/sqlite.h.in 4373b4a913ea460d91a9a4a54906ee18b350d573
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F src/sqlite.h.in 5ae0618d16a393ff8e66d1e373d3670892c2d254
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F src/sqlite3.rc 11094cc6a157a028b301a9f06b3d03089ea37c3e
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F src/sqlite3ext.h 886f5a34de171002ad46fae8c36a7d8051c190fc
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F src/sqliteInt.h f3a5d663fe9c6c0b2ee7fc2e20a6204eaea5bc7c
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@ -272,7 +272,7 @@ F src/test_syscall.c 16dbe79fb320fadb5acd7a0a59f49e52ab2d2091
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F src/test_tclvar.c f4dc67d5f780707210d6bb0eb6016a431c04c7fa
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F src/test_thread.c 1e133a40b50e9c035b00174035b846e7eef481cb
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F src/test_vfs.c e72f555ef7a59080f898fcf1a233deb9eb704ea9
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F src/test_vfstrace.c 21b99a6fe3f4c8be13c0fe83006ee13873154d78
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F src/test_vfstrace.c 3a0ab304682fecbceb689e7d9b904211fde11d78
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F src/test_wsd.c 41cadfd9d97fe8e3e4e44f61a4a8ccd6f7ca8fe9
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F src/tokenize.c ec4c1a62b890bf1dbcdb966399e140b904c700a4
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F src/trigger.c d84e1f3669e9a217731a14a9d472b1c7b87c87ba
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@ -726,7 +726,7 @@ F test/oserror.test 50417780d0e0d7cd23cf12a8277bb44024765df3
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F test/pager1.test 1acbdb14c5952a72dd43129cabdbf69aaa3ed1fa
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F test/pager2.test 67b8f40ae98112bcdba1f2b2d03ea83266418c71
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F test/pager3.test 3856d9c80839be0668efee1b74811b1b7f7fc95f
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F test/pager4.test 1848509f0aa83f99d438a2bae02c3fd64dd1afe6
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F test/pager4.test afbffa3f6813bd9bf126eb5e66bc954717f36de5
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F test/pagerfault.test 7285379906ab2f1108b8e82bbdf2d386cc8ff3ff
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F test/pagerfault2.test caf4c7facb914fd3b03a17b31ae2b180c8d6ca1f
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F test/pagerfault3.test 1003fcda009bf48a8e22a516e193b6ef0dd1bbd8
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@ -1146,10 +1146,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
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F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
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F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
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F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
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P 27392118af4c38c5203a04b8013e1afdb1cebd0d
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R 0833e0746c0a3bdbdf22e2e06343a85a
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T *branch * detect-moved-db
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T *sym-detect-moved-db *
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T -sym-trunk *
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P 8759a8e4d83b163e315eff316cf163f6ea42f2bb
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R 2ad1eaf9a51016580f9868708a4f6a69
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U drh
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Z 9ba43ea2faea1b2f751f5fd7fd1e8bc8
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Z 59055776a0fdbfce14961d0c6b6be93f
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@ -1 +1 @@
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8759a8e4d83b163e315eff316cf163f6ea42f2bb
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28348f2ada98c616241a51aecb70b63e87e6ddbb
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28
src/pager.c
28
src/pager.c
@ -4799,7 +4799,7 @@ int sqlite3PagerOpen(
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/* Verify that the database file has not be deleted or renamed out from
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** under the pager. Return SQLITE_OK if the database is still were it ought
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** to be on disk. Return non-zero (SQLITE_IOERR_NODB or some other error
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** to be on disk. Return non-zero (SQLITE_READONLY_DBMOVED or some other error
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** code from sqlite3OsAccess()) if the database has gone missing.
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*/
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static int databaseIsUnmoved(Pager *pPager){
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@ -4814,7 +4814,7 @@ static int databaseIsUnmoved(Pager *pPager){
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dc = sqlite3OsDeviceCharacteristics(pPager->fd);
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if( (dc&fixedFlags)==fixedFlags ) return SQLITE_OK;
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rc = sqlite3OsAccess(pPager->pVfs, pPager->zFilename, SQLITE_ACCESS_EXISTS, &x);
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if( rc==SQLITE_OK && !x ) rc = SQLITE_IOERR_NODB;
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if( rc==SQLITE_OK && !x ) rc = SQLITE_READONLY_DBMOVED;
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return rc;
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}
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@ -4991,10 +4991,6 @@ int sqlite3PagerSharedLock(Pager *pPager){
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goto failed;
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}
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/* Verify that the database is unmoved and undeleted */
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rc = databaseIsUnmoved(pPager);
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if( rc ) goto failed;
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/* If a journal file exists, and there is no RESERVED lock on the
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** database file, then it either needs to be played back or deleted.
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*/
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@ -5498,13 +5494,19 @@ static int pager_open_journal(Pager *pPager){
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(SQLITE_OPEN_DELETEONCLOSE|SQLITE_OPEN_TEMP_JOURNAL):
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(SQLITE_OPEN_MAIN_JOURNAL)
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);
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#ifdef SQLITE_ENABLE_ATOMIC_WRITE
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rc = sqlite3JournalOpen(
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pVfs, pPager->zJournal, pPager->jfd, flags, jrnlBufferSize(pPager)
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);
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#else
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rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, flags, 0);
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#endif
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/* Verify that the database still has the same name as it did when
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** it was originally opened. */
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rc = databaseIsUnmoved(pPager);
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if( rc==SQLITE_OK ){
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#ifdef SQLITE_ENABLE_ATOMIC_WRITE
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rc = sqlite3JournalOpen(
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pVfs, pPager->zJournal, pPager->jfd, flags, jrnlBufferSize(pPager)
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);
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#else
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rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, flags, 0);
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#endif
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}
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}
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assert( rc!=SQLITE_OK || isOpen(pPager->jfd) );
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}
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@ -475,7 +475,6 @@ int sqlite3_exec(
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#define SQLITE_IOERR_MMAP (SQLITE_IOERR | (24<<8))
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#define SQLITE_IOERR_GETTEMPPATH (SQLITE_IOERR | (25<<8))
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#define SQLITE_IOERR_CONVPATH (SQLITE_IOERR | (26<<8))
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#define SQLITE_IOERR_NODB (SQLITE_IOERR | (27<<8))
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#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8))
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#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8))
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#define SQLITE_BUSY_SNAPSHOT (SQLITE_BUSY | (2<<8))
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@ -487,6 +486,7 @@ int sqlite3_exec(
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#define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8))
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#define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8))
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#define SQLITE_READONLY_ROLLBACK (SQLITE_READONLY | (3<<8))
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#define SQLITE_READONLY_DBMOVED (SQLITE_READONLY | (4<<8))
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#define SQLITE_ABORT_ROLLBACK (SQLITE_ABORT | (2<<8))
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#define SQLITE_CONSTRAINT_CHECK (SQLITE_CONSTRAINT | (1<<8))
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#define SQLITE_CONSTRAINT_COMMITHOOK (SQLITE_CONSTRAINT | (2<<8))
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@ -262,7 +262,7 @@ static void vfstrace_print_errcode(
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case SQLITE_IOERR_SEEK: zVal = "SQLITE_IOERR_SEEK"; break;
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case SQLITE_IOERR_GETTEMPPATH: zVal = "SQLITE_IOERR_GETTEMPPATH"; break;
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case SQLITE_IOERR_CONVPATH: zVal = "SQLITE_IOERR_CONVPATH"; break;
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case SQLITE_IOERR_NODB: zVal = "SQLITE_IOERR_NODB"; break;
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case SQLITE_READONLY_DBMOVED: zVal = "SQLITE_READONLY_DBMOVED"; break;
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case SQLITE_LOCKED_SHAREDCACHE: zVal = "SQLITE_LOCKED_SHAREDCACHE"; break;
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case SQLITE_BUSY_RECOVERY: zVal = "SQLITE_BUSY_RECOVERY"; break;
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case SQLITE_CANTOPEN_NOTEMPDIR: zVal = "SQLITE_CANTOPEN_NOTEMPDIR"; break;
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@ -18,16 +18,66 @@ if {$tcl_platform(platform)!="unix"} return
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Create a database file for testing
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#
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do_execsql_test pager4-1.1 {
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CREATE TABLE t1(a,b,c);
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INSERT INTO t1 VALUES(673,'stone','philips');
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SELECT * FROM t1;
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} {673 stone philips}
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# After renaming the database file while it is open, one can still
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# read from the database, but writing returns a READONLY error.
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#
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file delete -force test-xyz.db
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file rename test.db test-xyz.db
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do_catchsql_test pager4-1.2 {
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SELECT * FROM t1;
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} {1 {disk I/O error}}
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} {0 {673 stone philips}}
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do_catchsql_test pager4-1.3 {
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UPDATE t1 SET a=537;
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} {1 {attempt to write a readonly database}}
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# Changing the name back clears the READONLY error
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#
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file rename test-xyz.db test.db
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do_catchsql_test pager4-1.4 {
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SELECT * FROM t1;
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} {0 {673 stone philips}}
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do_catchsql_test pager4-1.5 {
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UPDATE t1 SET a=537;
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SELECT * FROM t1;
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} {0 {537 stone philips}}
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# We can write to a renamed database if journal_mode=OFF or
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# journal_mode=MEMORY.
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#
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file rename test.db test-xyz.db
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do_catchsql_test pager4-1.6 {
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PRAGMA journal_mode=OFF;
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UPDATE t1 SET a=107;
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SELECT * FROM t1;
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} {0 {off 107 stone philips}}
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do_catchsql_test pager4-1.7 {
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PRAGMA journal_mode=MEMORY;
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UPDATE t1 SET b='magpie';
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SELECT * FROM t1;
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} {0 {memory 107 magpie philips}}
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# Any other journal mode gives a READONLY error
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#
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do_catchsql_test pager4-1.8 {
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PRAGMA journal_mode=DELETE;
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UPDATE t1 SET c='jaguar';
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} {1 {attempt to write a readonly database}}
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do_catchsql_test pager4-1.9 {
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PRAGMA journal_mode=TRUNCATE;
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UPDATE t1 SET c='jaguar';
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} {1 {attempt to write a readonly database}}
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do_catchsql_test pager4-1.10 {
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PRAGMA journal_mode=PERSIST;
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UPDATE t1 SET c='jaguar';
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} {1 {attempt to write a readonly database}}
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finish_test
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