After uploading successful, using default Upload library the file is saved in 'only read mode' in server directory, using chmod native function i change the file permission manually. The question is why the file is not saved with it's default permission mode? Operating system: Ubuntu
I agree with @demyr. Check with your hosting provider and see what their default settings are. Also keep in mind that you could automate setting the files permissions every time a file is uploaded (just a thought). Just make sure that the file is from a trusted source.