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A better solution to being unable to find a unique master-journal filename: 

just delete an existing master-journal and reuse it.

FossilOrigin-Name: 2685c2b949061f18bf6a4940eac8c8148873abb6
This commit is contained in:
drh 2011-12-16 01:21:31 +00:00
parent f580860f51
commit 5c531a4aab
3 changed files with 14 additions and 15 deletions
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12
manifest
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@ -1,5 +1,5 @@
C Make\ssure\sthe\santipenultimate\scharacter\sof\smaster-journal\sfilenames\sis\sa\s"9"\nin\sorder\sto\savoid\scollisions\swith\sother\sfiles\sin\s8+3\sfilename\smode.\s\sAlso,\nlimit\sthe\snumber\sof\sattempts\sat\sfinding\sa\sunique\smaster-journal\sfilename.
D 2011-12-16T00:33:04.352
C A\sbetter\ssolution\sto\sbeing\sunable\sto\sfind\sa\sunique\smaster-journal\sfilename:\njust\sdelete\san\sexisting\smaster-journal\sand\sreuse\sit.
D 2011-12-16T01:21:31.882
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in 5b4a3e12a850b021547e43daf886b25133b44c07
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@ -243,7 +243,7 @@ F src/vdbe.c a7ab9993ec5a4d9479dc99671faec061fbf9b889
F src/vdbe.h f0725ee997db869ecae5bb70a71612aabeca7755
F src/vdbeInt.h 9498fc98a2c9e349a4ef13455ff5a3e898f40176
F src/vdbeapi.c 4dbba7f94f127f6ea8d2d0505ee1f98e5ffbf546
F src/vdbeaux.c 896ce3c48bf1bf27a1330589a20daa2db0222381
F src/vdbeaux.c 7bae4d94d7e41e8005824a6d1da54b73d47f52b1
F src/vdbeblob.c 32f2a4899d67f69634ea4dd93e3f651936d732cb
F src/vdbemem.c 2fc78b3e0fabcc1eaa23cd79dd2e30e6dcfe1e56
F src/vdbesort.c 468d43c057063e54da4f1988b38b4f46d60e7790
@ -978,7 +978,7 @@ F tool/tostr.awk e75472c2f98dd76e06b8c9c1367f4ab07e122d06
F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
F tool/warnings-clang.sh 9f406d66e750e8ac031c63a9ef3248aaa347ef2a
F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
P 3af1feaa35d3fb2e7be550cd32a727001b874938
R 398b3e3805c532cf24ac8d99750e0da2
P 34a0483605d36e6cf03065ed0df33fb1f7c8a272
R dac1ae186d64bf5089bb1df4a91a9793
U drh
Z ebbc2fb95389a75c4e570b61ca8c6d99
Z cdecba57f424e5a33e7e2e3955b5bd95

2
manifest.uuid
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@ -1 +1 @@
34a0483605d36e6cf03065ed0df33fb1f7c8a272
2685c2b949061f18bf6a4940eac8c8148873abb6

15
src/vdbeaux.c
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@ -1825,25 +1825,24 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
i64 offset = 0;
int res;
int retryCount = 0;
int nMainFile;
/* Select a master journal file name */
nMainFile = sqlite3Strlen30(zMainFile);
zMaster = sqlite3MPrintf(db, "%s-mjXXXXXX9XX", zMainFile);
if( zMaster==0 ) return SQLITE_NOMEM;
do {
u32 iRandom;
if( retryCount++>100 ){
sqlite3_log(SQLITE_FULL, "cannot create a master journal filename");
rc = SQLITE_FULL;
sqlite3OsDelete(pVfs, zMaster, 0);
break;
}
sqlite3DbFree(db, zMaster);
sqlite3_randomness(sizeof(iRandom), &iRandom);
zMaster = sqlite3MPrintf(db, "%s-mj%06X9%02X", zMainFile,
sqlite3_snprintf(13, &zMaster[nMainFile], "-mj%06X9%02X",
(iRandom>>8)&0xffffff, iRandom&0xff);
if( !zMaster ){
return SQLITE_NOMEM;
}
/* The antipenultimate character of the master journal name must
** be "9" to avoid name collisions when using 8+3 filenames. */
assert( zMaster[strlen(zMaster)-3]=='9' );
assert( zMaster[sqlite3Strlen30(zMaster)-3]=='9' );
sqlite3FileSuffix3(zMainFile, zMaster);
rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res);
}while( rc==SQLITE_OK && res );