Re: Q: large files in iso9660 ?

[P. Christeas]

>
> The kernel (2.6 and 2.4) has the following code in isofs_read_inode():
>
>         /*
>          * The ISO-9660 filesystem only stores 32 bits for file size.
>          * mkisofs handles files up to 2GB-2 = 2147483646 = 0x7FFFFFFE
> bytes * in size. This is according to the large file summit paper from
> 1996. * WARNING: ISO-9660 filesystems > 1 GB and even > 2 GB are fully *   
>       legal. Do not prevent to use DVD's schilling@xxxxxxxxxxxx */
>         if ((inode->i_size < 0 || inode->i_size > 0x7FFFFFFE) &&
>             sbi->s_cruft == 'n') {
>                 printk(KERN_WARNING "Warning: defective CD-ROM.  "
>                        "Enabling \"cruft\" mount option.\n");
>                 sbi->s_cruft = 'y';
>         }
>
> IOW: your kernel should have warned you about the defective CDROM and
> truncated filesizes to 16MB (which is what the "cruft" mount option
> does).
>
>
> Erik

Makes perfect sense.
However, this *does* enforce the limit on DVD files. If I try to disable this 
code and make inode sizes uint32, can there be any other negative 
implication? Of course, I am still limited to 3GB..
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