> > > Is there a way for you to know you're on an NFS filesystem in Java?
> >
> > One way would be to move the mess into NestedVM. I was thinking the
> > the code that calls the Java locking API could test to see if it works
> > (by attempting a second lock, etc), and if it doesn't, then return -1
> > to fcntl(). Then with SQLITE_ENABLE_LOCKING_STYLE enabled, SQLite will
> > drop to dotlockLocking without a recompile.
Is it possible to get f_fstypename info in Java?
static sqlite3LockingStyle sqlite3DetectLockingStyle(const char *filePath,
int fd) {
#ifdef SQLITE_FIXED_LOCKING_STYLE
return (sqlite3LockingStyle)SQLITE_FIXED_LOCKING_STYLE;
#else
struct statfs fsInfo;
if (statfs(filePath, &fsInfo) == -1)
return sqlite3TestLockingStyle(filePath, fd);
if (fsInfo.f_flags & MNT_RDONLY)
return noLockingStyle;
if( (!strcmp(fsInfo.f_fstypename, "hfs")) ||
(!strcmp(fsInfo.f_fstypename, "ufs")) )
return posixLockingStyle;
if(!strcmp(fsInfo.f_fstypename, "afpfs"))
return afpLockingStyle;
if(!strcmp(fsInfo.f_fstypename, "nfs"))
return sqlite3TestLockingStyle(filePath, fd);
if(!strcmp(fsInfo.f_fstypename, "smbfs"))
return flockLockingStyle;
if(!strcmp(fsInfo.f_fstypename, "msdos"))
return dotlockLockingStyle;
if(!strcmp(fsInfo.f_fstypename, "webdav"))
return unsupportedLockingStyle;
return sqlite3TestLockingStyle(filePath, fd);
#endif /* SQLITE_FIXED_LOCKING_STYLE */
}
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