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Enhanced I/O error simulation. (CVS 3418)

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FossilOrigin-Name: 86931854fc5a63571719639d9a23b1d6614a6153
This commit is contained in:
drh
2006-09-14 13:47:11 +00:00
parent f800e3e63a
commit 5968593b51
6 changed files with 58 additions and 41 deletions
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45
src/os_unix.c
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@@ -928,14 +928,13 @@ static int seekAndRead(unixFile *id, void *pBuf, int cnt){
static int unixRead(OsFile *id, void *pBuf, int amt){
int got;
assert( id );
SimulateIOError(SQLITE_IOERR);
TIMER_START;
got = seekAndRead((unixFile*)id, pBuf, amt);
TIMER_END;
TRACE5("READ %-3d %5d %7d %d\n", ((unixFile*)id)->h, got,
last_page, TIMER_ELAPSED);
SEEK(0);
/* if( got<0 ) got = 0; */
SimulateIOError( got=0 );
if( got==amt ){
return SQLITE_OK;
}else{
@@ -970,8 +969,6 @@ static int unixWrite(OsFile *id, const void *pBuf, int amt){
int wrote = 0;
assert( id );
assert( amt>0 );
SimulateIOError(SQLITE_IOERR);
SimulateDiskfullError;
TIMER_START;
while( amt>0 && (wrote = seekAndWrite((unixFile*)id, pBuf, amt))>0 ){
amt -= wrote;
@@ -981,8 +978,14 @@ static int unixWrite(OsFile *id, const void *pBuf, int amt){
TRACE5("WRITE %-3d %5d %7d %d\n", ((unixFile*)id)->h, wrote,
last_page, TIMER_ELAPSED);
SEEK(0);
SimulateIOError(( wrote=(-1), amt=1 ));
SimulateDiskfullError(( wrote=0, amt=1 ));
if( amt>0 ){
return SQLITE_FULL;
if( wrote<0 ){
return SQLITE_IOERR;
}else{
return SQLITE_FULL;
}
}
return SQLITE_OK;
}
@@ -994,7 +997,7 @@ static int unixSeek(OsFile *id, i64 offset){
assert( id );
SEEK(offset/1024 + 1);
#ifdef SQLITE_TEST
if( offset ) SimulateDiskfullError
if( offset ) SimulateDiskfullError(return SQLITE_FULL);
#endif
((unixFile*)id)->offset = offset;
return SQLITE_OK;
@@ -1096,11 +1099,13 @@ static int full_fsync(int fd, int fullSync, int dataOnly){
** will not roll back - possibly leading to database corruption.
*/
static int unixSync(OsFile *id, int dataOnly){
int rc;
unixFile *pFile = (unixFile*)id;
assert( pFile );
SimulateIOError(SQLITE_IOERR);
TRACE2("SYNC %-3d\n", pFile->h);
if( full_fsync(pFile->h, pFile->fullSync, dataOnly) ){
rc = full_fsync(pFile->h, pFile->fullSync, dataOnly);
SimulateIOError( rc=1 );
if( rc ){
return SQLITE_IOERR;
}
if( pFile->dirfd>=0 ){
@@ -1141,7 +1146,6 @@ int sqlite3UnixSyncDirectory(const char *zDirname){
#else
int fd;
int r;
SimulateIOError(SQLITE_IOERR);
fd = open(zDirname, O_RDONLY|O_BINARY, 0);
TRACE3("DIRSYNC %-3d (%s)\n", fd, zDirname);
if( fd<0 ){
@@ -1149,7 +1153,12 @@ int sqlite3UnixSyncDirectory(const char *zDirname){
}
r = fsync(fd);
close(fd);
return ((r==0)?SQLITE_OK:SQLITE_IOERR);
SimulateIOError( r=1 );
if( r ){
return SQLITE_IOERR;
}else{
return SQLITE_OK;
}
#endif
}
@@ -1157,19 +1166,27 @@ int sqlite3UnixSyncDirectory(const char *zDirname){
** Truncate an open file to a specified size
*/
static int unixTruncate(OsFile *id, i64 nByte){
int rc;
assert( id );
SimulateIOError(SQLITE_IOERR);
return ftruncate(((unixFile*)id)->h, nByte)==0 ? SQLITE_OK : SQLITE_IOERR;
rc = ftruncate(((unixFile*)id)->h, nByte);
SimulateIOError( rc=1 );
if( rc ){
return SQLITE_IOERR;
}else{
return SQLITE_OK;
}
}
/*
** Determine the current size of a file in bytes
*/
static int unixFileSize(OsFile *id, i64 *pSize){
int rc;
struct stat buf;
assert( id );
SimulateIOError(SQLITE_IOERR);
if( fstat(((unixFile*)id)->h, &buf)!=0 ){
rc = fstat(((unixFile*)id)->h, &buf);
SimulateIOError( rc=1 );
if( rc!=0 ){
return SQLITE_IOERR;
}
*pSize = buf.st_size;