how to preserve file permissions using mkisofs utility

Lakki · 04-25-2009, 09:41 AM

Hi,

I am using the mkisofs utility to burn a CD-ROM in Red hat linus 5.3 version

I have used mkisofs to burn the CD-ROM. But indeed it didnt preserve the existing file permissions

"-r" option when used make it publicly readable.

Is there any option in mkisofs that preserves the file permission as it is?

Thanks in advance!

-Lakki

raskin · 04-25-2009, 10:13 AM

What these permissions would mean?

Write permissions are useless - CDROM is not random-rewrite medium, and read permissions are useless, too - you'd better suppose everyone has at least one box with root access.. So ISO FS format just does not include full POSIX permissions.

If you want to use it as a backup, just tar and gzip the files. You'll save some space and even some time (less data to burn beats more processing).

Lakki · 04-25-2009, 12:37 PM

The files have the permission "rw-rw-rw"
After i burn them in the CD-ROM, i have the permissions as "r--r--r--"

Neither i would like have to have the same permission on my CD too..

H_TeXMeX_H · 04-25-2009, 12:48 PM

Again, it's not possible. Tar the files at least, that will preserve permissions, gzip, bzip, etc is optional.