Am 15.06.2015 um 07:34 schrieb Martin Pitt: > Hey Josh, > > Josh Triplett [2015-06-13 16:23 -0700]: >> I plugged in a removable USB disk, and its devices showed up as root:disk >> 0660, >> with no ACLs. Normally, I'd expect removable USB disks to grant >> read/write permission to the logged-in user. >> ~$ ls -l /dev/sdb* >> brw-rw---- 1 root disk 8, 16 Jun 13 16:17 /dev/sdb >> brw-rw---- 1 root disk 8, 17 Jun 13 16:17 /dev/sdb1 > > That's expected. As Michael already said, we never explicitly granted > user access to device nodes. Maybe in the past some devices got that > through specific group membership, or you had some custom udev rules > to do that; but throughout the history of pmount, hal, consolekit, > udev etc. in Debian the device nodes themselves weren't user > accessible in general. The main exception there that I remember is > Fedora's/Red Hat's ancient console_helper (or something similar) which > actually changed the device nodes themselves. But that was some decade > ago already..
I checked wheezy, and it had the following rules:
91-permissions: SUBSYSTEM=="block", ATTRS{removable}=="1", GROUP="floppy"
91-permissions: SUBSYSTEM=="block", SUBSYSTEMS=="usb|ieee1394|mmc|pcmcia",
GROUP="floppy"
See also https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=751892
Maybe we should merge those two bug reports?
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