Are file permissions in files on external devices silly?

Marcin 'Qrczak' Kowalczyk qrczak at
Fri Nov 21 18:42:06 UTC 2008

2008/11/21 Martin Pitt <martin.pitt at>:

> For removable drives, once the kernel supports uid=/gid= options for
> hfs+ (Mac) and ext3 (other Linuxes), they can be trivially applied
> automatically in hal if a device is detected as removable. The hard
> part is to get kernel support for it.

This should not be done unconditionally. I mount a USB drive with an
ext3 filesystem and make a backup to it using rsync. The backup should
continue to preserve permissions.

Marcin Kowalczyk
qrczak at

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