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Overview
| Comment: | Change sqlite3_open_v2() to return SQLITE_MISUSE if the combination of bits in the flags parameter is invalid. The documentation says the behavior in this situation is undefined - the documentation is unaltered by this code change. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 5e8101c5122336844ea920e6fbdace23e35b931f |
| User & Date: | drh 2010-08-24 18:07:58 |
Context
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2010-08-24
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| 18:35 | Changes to support building with SQLITE_OMIT_WAL. check-in: d1ed743b user: shaneh tags: trunk | |
| 18:07 | Change sqlite3_open_v2() to return SQLITE_MISUSE if the combination of bits in the flags parameter is invalid. The documentation says the behavior in this situation is undefined - the documentation is unaltered by this code change. check-in: 5e8101c5 user: drh tags: trunk | |
| 18:06 | Comment enhancements and typo fixes in pcache1.c. check-in: c2dc39c0 user: drh tags: trunk | |
Changes
Changes to src/main.c.
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*ppDb = 0;
#ifndef SQLITE_OMIT_AUTOINIT
rc = sqlite3_initialize();
if( rc ) return rc;
#endif
if( sqlite3GlobalConfig.bCoreMutex==0 ){
isThreadsafe = 0;
}else if( flags & SQLITE_OPEN_NOMUTEX ){
isThreadsafe = 0;
}else if( flags & SQLITE_OPEN_FULLMUTEX ){
isThreadsafe = 1;
}else{
................................................................................
SQLITE_OPEN_TEMP_DB |
SQLITE_OPEN_TRANSIENT_DB |
SQLITE_OPEN_MAIN_JOURNAL |
SQLITE_OPEN_TEMP_JOURNAL |
SQLITE_OPEN_SUBJOURNAL |
SQLITE_OPEN_MASTER_JOURNAL |
SQLITE_OPEN_NOMUTEX |
SQLITE_OPEN_FULLMUTEX
);
/* Allocate the sqlite data structure */
db = sqlite3MallocZero( sizeof(sqlite3) );
if( db==0 ) goto opendb_out;
if( isThreadsafe ){
db->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE);
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*ppDb = 0; #ifndef SQLITE_OMIT_AUTOINIT rc = sqlite3_initialize(); if( rc ) return rc; #endif /* Only allow sensible combinations of bits in the flags argument. ** Throw an error if any non-sense combination is used. If we ** do not block illegal combinations here, it could trigger ** assert() statements in deeper layers. Sensible combinations ** are: ** ** 1: SQLITE_OPEN_READONLY ** 2: SQLITE_OPEN_READWRITE ** 6: SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE */ assert( SQLITE_OPEN_READONLY == 0x01 ); assert( SQLITE_OPEN_READWRITE == 0x02 ); assert( SQLITE_OPEN_CREATE == 0x04 ); testcase( (1<<(flags&7))==0x02 ); /* READONLY */ testcase( (1<<(flags&7))==0x04 ); /* READWRITE */ testcase( (1<<(flags&7))==0x40 ); /* READWRITE | CREATE */ if( ((1<<(flags&7)) & 0x46)==0 ) return SQLITE_MISUSE; if( sqlite3GlobalConfig.bCoreMutex==0 ){ isThreadsafe = 0; }else if( flags & SQLITE_OPEN_NOMUTEX ){ isThreadsafe = 0; }else if( flags & SQLITE_OPEN_FULLMUTEX ){ isThreadsafe = 1; }else{ ................................................................................ SQLITE_OPEN_TEMP_DB | SQLITE_OPEN_TRANSIENT_DB | SQLITE_OPEN_MAIN_JOURNAL | SQLITE_OPEN_TEMP_JOURNAL | SQLITE_OPEN_SUBJOURNAL | SQLITE_OPEN_MASTER_JOURNAL | SQLITE_OPEN_NOMUTEX | SQLITE_OPEN_FULLMUTEX | SQLITE_OPEN_WAL ); /* Allocate the sqlite data structure */ db = sqlite3MallocZero( sizeof(sqlite3) ); if( db==0 ) goto opendb_out; if( isThreadsafe ){ db->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE); |
Changes to src/sqlite.h.in.
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** it does not already exist. This is the behavior that is always used for
** sqlite3_open() and sqlite3_open16().</dd>)^
** </dl>
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
** combinations shown above or one of the combinations shown above combined
** with the [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX],
** [SQLITE_OPEN_SHAREDCACHE] and/or [SQLITE_OPEN_SHAREDCACHE] flags,
** then the behavior is undefined.
**
** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
** opens in the multi-thread [threading mode] as long as the single-thread
** mode has not been set at compile-time or start-time. ^If the
** [SQLITE_OPEN_FULLMUTEX] flag is set then the database connection opens
** in the serialized [threading mode] unless single-thread was
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| |
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** it does not already exist. This is the behavior that is always used for
** sqlite3_open() and sqlite3_open16().</dd>)^
** </dl>
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
** combinations shown above or one of the combinations shown above combined
** with the [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX],
** [SQLITE_OPEN_SHAREDCACHE] and/or [SQLITE_OPEN_PRIVATECACHE] flags,
** then the behavior is undefined.
**
** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
** opens in the multi-thread [threading mode] as long as the single-thread
** mode has not been set at compile-time or start-time. ^If the
** [SQLITE_OPEN_FULLMUTEX] flag is set then the database connection opens
** in the serialized [threading mode] unless single-thread was
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