On Tue, Apr 26, 2016 at 02:08:33PM -0400, Steve Litt wrote: > Hi all, > > It seems like everyone in the Devuan community has written his or her > own usb drive automounter, and I've just discovered something that will > help us all. > > The thumb drive you buy at the store is formatted with a Windows file > system, and that's a good thing because it's mountable pretty much by > any device or computer. Sneakernet at its best. > > But you must be root to mount it unless it's declared in /etc/fstab, > which is a bad idea for a number of reasons. And if you mount it as > root, normally the owner is root, and with its (typical) 755 > permissions, a normal user can't write to it. Defeating its whole > purpose. > > What you really want is for anyone in a certain group to be able to > write to it. I used group "floppy", because a USB drive is a pretty > good analog to a floppy, and floppies aren't even used much anymore. So > do the mount like this: > > mount -o gid=floppy,fmask=113,dmask=002 /dev/sdd1 /mnt/thumb > > or > > mount -o gid=floppy,fmask=113,dmask=002 /dev/sdd1 /mnt/sdd1 > > The gid= means the thumb drive and all its files are group "floppy", > and the fmask and dmask make directories 775 and 664 respectively, so > group "floppy" can write. > > I haven't yet tried this on a genuine ext4 formatted thumb drive, so I > don't know whether it would have any downside there. If so, the > different mount options would only appear if the thumb drive was > determined to be vfat/fat/msdos etc.
I have a USB backup drive. I have root mount it, It's formatted ext3, and I have no problems doing so. It even allows me to use my systems's user IDs, though I expect it'll get confused if I were to use it on several systems with different UIDs. I just mount it as mount /dev/sdb1 /usbackup -- hendrik _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
