Doing a create table generates a disk I/O error I open / create a new database with sqlite3_open_v2
int err = sqlite3_open_v2 (file, &pDb, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, "unix-namedsem") ; Then call sqlite3_exec with “CREATE TABLE t (id INTEGER PRIMARY KEY ASC)” This generates a disk I/O error. I assume it is trying to remove a temporary file. Regards Andy Ling From: drhsql...@gmail.com [mailto:drhsql...@gmail.com] On Behalf Of Richard Hipp Sent: 12 August 2014 17:24 To: Andy Ling Cc: General Discussion of SQLite Database; 王庆刚 Subject: Re: [sqlite] HELP sqlite3 used in vxworks has someproblem？ On Tue, Aug 12, 2014 at 11:40 AM, Andy Ling <andy.l...@quantel.com<mailto:andy.l...@quantel.com>> wrote: > From: drhsql...@gmail.com<mailto:drhsql...@gmail.com> > [mailto:drhsql...@gmail.com<mailto:drhsql...@gmail.com>] On Behalf Of Richard > Hipp > Sent: 12 August 2014 15:46 > I put a new snapshot on the download page. Please try it, *without* > SQLITE_ENABLE_LOCKING_MODE. OK, it builds, but doesn't run. What are you doing that is causing an unlink() call to fail? That should be a very obscure and infrequent occurrence. How is this preventing you from running simple tests? What problems does it display? It is missing the patch to unixDelete. Whilst vxWorks is POSIX compliant, for file I/O it is only compliant if the underlying file system is. We are using dosFs, which isn't. This means the error codes don't match. So we added the following..... static int unixDelete( sqlite3_vfs *NotUsed, /* VFS containing this as the xDelete method */ const char *zPath, /* Name of file to be deleted */ int dirSync /* If true, fsync() directory after deleting file */ ){ int rc = SQLITE_OK; UNUSED_PARAMETER(NotUsed); SimulateIOError(return SQLITE_IOERR_DELETE); if( osUnlink(zPath)==(-1) ){ if( errno==ENOENT ){ rc = SQLITE_IOERR_DELETE_NOENT; #if OS_VXWORKS }else if( errno==0x380003 ){ /* == S_dosFsLib_FILE_NOT_FOUND */ rc = SQLITE_IOERR_DELETE_NOENT; #endif }else{ rc = unixLogError(SQLITE_IOERR_DELETE, "unlink", zPath); } With this patch I have run a few simple commands. Created a table, added a few rows and listed them. The compile options I'm using are -DHAVE_UTIME -DSQLITE_OMIT_LOAD_EXTENSION Regards Andy Ling -- D. Richard Hipp d...@sqlite.org<mailto:d...@sqlite.org> -- D. Richard Hipp d...@sqlite.org<mailto:d...@sqlite.org> _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
