On 04/26/2016 03:36 PM, Hendrik Boom wrote: > 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
This did not work for me: $ mount -o gid=floppy,fmask=113,dmask=002 /dev/sdd1 /mnt/thumb mount: only root can use "--options" option First partition is vfat, second is ext4, and that won't mount, either. I'm in the floppy group and also in plugdev group, and /mnt/thumb exists. What am I doing wrong? Or is this something the user used to be able to do but no longer can? (similar to what happened with blkid.) I like pmount for mounting usb devices. It's pretty smart. For removable devices, you don't need to list them in /etc/pmount.allow, and it handles encrypted filesystems (cryptsetup/luks). -fsr _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
