Automounting with udev/hal

Question

Hey,
I've gone through this, specifically:
KERNEL=="sd[a-z]", NAME="%k", SYMLINK+="usbhd-%k", GROUP="users", OPTIONS="last_rule"
ACTION=="add", KERNEL=="sd[a-z][0-9]", SYMLINK+="usbhd-%k", GROUP="users", NAME="%k"
ACTION=="add", KERNEL=="sd[a-z][0-9]", PROGRAM=="/lib/initcpio/udev/vol_id --label %N", ENV{dir_name}="%c"
ACTION=="add", KERNEL=="sd[a-z][0-9]", PROGRAM!="/lib/initcpio/udev/vol_id --label %N", ENV{dir_name}="usbhd-%k"
ACTION=="add", KERNEL=="sd[a-z][0-9]", RUN+="/bin/mkdir -p /media/%E{dir_name}"
ACTION=="add", KERNEL=="sd[a-z][0-9]", PROGRAM=="/lib/initcpio/udev/vol_id -t %N", RESULT=="vfat", RUN+="/bin/mount -t vfat -o rw,noauto,flush,quiet,nodev,nosuid,noexec,noatime,dmask=000,fmask=111 /dev/%k /media/%E{dir_name}", OPTIONS="last_rule"
ACTION=="add", KERNEL=="sd[a-z][0-9]", RUN+="/bin/mount -t auto -o rw,noauto,sync,dirsync,noexec,nodev,noatime /dev/%k /media/%E{dir_name}", OPTIONS="last_rule"
ACTION=="remove", KERNEL=="sd[a-z][0-9]", RUN+="/bin/umount -l /media/%E{dir_name}"
ACTION=="remove", KERNEL=="sd[a-z][0-9]", RUN+="/bin/rmdir /media/%E{dir_name}", OPTIONS="last_rule"
The problem is that the folder in /media, created in the 4th add action has uid and gid root. Therefore, as a normal user I cannot write! Any thoughts how to make it storage, or something like that?
Thanks in advance!

Answer 1

thayer wrote:
Did you run chgrp as root? It works when I do it on a mounted dir:
$ sudo chgrp users /media/usb_sdc1/
I can write to FAT flash drives even though the parent directory /media/$drivelabel is set to root:root.  Ext3/4 device folders are set to root:storage.  Both work.
Aye, I ran it as root.
thayer wrote:
PS: Make sure you're a member of the storage group:
$ sudo gpasswd -a $USER storage
Aye again, I am a member of the storage group!
thayer wrote:
For reference:
# vim:enc=utf-8:nu:ai:si:et:ts=4:sw=4:ft=udevrules:
# /etc/udev/rules.d/10-my-udev.rules
# automount usb block devices to /media with symlinks in /mnt
# /media uses volume label while /mnt uses sd[a-z][1-9]
# clean up both /media and /mnt when devices are removed
KERNEL=="sd[b-z]", NAME="%k", SYMLINK+="usbhd_%k", GROUP="users", OPTIONS="last_rule"
ACTION=="add", KERNEL=="sd[b-z][0-9]", SYMLINK+="usbhd_%k", GROUP="users", NAME="%k"
ACTION=="add", KERNEL=="sd[b-z][0-9]", PROGRAM=="/lib/initcpio/udev/vol_id --label %N", ENV{dir_name}="%c"
ACTION=="add", KERNEL=="sd[b-z][0-9]", PROGRAM!="/lib/initcpio/udev/vol_id --label %N", ENV{dir_name}="usbhd_%k"
ACTION=="add", KERNEL=="sd[b-z][0-9]", RUN+="/bin/mkdir -p /media/%E{dir_name}"
ACTION=="add", KERNEL=="sd[b-z][0-9]", RUN+="/bin/ln -s /media/%E{dir_name} /mnt/usbhd_%k"
ACTION=="add", KERNEL=="sd[b-z][0-9]", PROGRAM=="/lib/initcpio/udev/vol_id -t %N", RESULT=="vfat", RUN+="/bin/mount -t vfat -o rw,users,noauto,flush,quiet,noatime,dmask=000,fmask=111 /dev/%k /media/%E{dir_name}", OPTIONS="last_rule"
ACTION=="add", KERNEL=="sd[b-z][0-9]", RUN+="/bin/mount -t auto -o rw,users,noauto,sync,dirsync,noatime /dev/%k /media/%E{dir_name}", OPTIONS="last_rule"
ACTION=="remove", KERNEL=="sd[b-z][0-9]", RUN+="/bin/rm -f /mnt/usbhd_%k"
ACTION=="remove", KERNEL=="sd[b-z][0-9]", RUN+="/bin/umount -l /media/%E{dir_name}"
ACTION=="remove", KERNEL=="sd[b-z][0-9]", RUN+="/bin/rmdir /media/%E{dir_name}", OPTIONS="last_rule"
After analysing your rules, I noticed that you have the users mounting options, which I curiously had already tried but appended to the end of all options unlike you.
I was coming to post my ugly work around, which included using the uid=$USER option. It's ok because it is a single user machine, but still.
Surprisingly, I tried your rules and it works fine!
Even more surprising, I tried again the rules from the udev wiki entry and guess what. It's working.
Something must've been wrong, I don't know what, but apparently it's fixed now. Oh well.
Thank you guys!
Last edited by tvale (2009-10-23 21:16:56)