PKGBUILDs/core/udev/11-media-by-label-auto-mount.rules

# Plugbox Linux USB and SD-card automounter

KERNEL!="sd[a-z]*|mmcblk[0-9]p[0-9]", GOTO="media_by_label_auto_mount_end"
ACTION=="add", PROGRAM!="/sbin/blkid %N", GOTO="media_by_label_auto_mount_end"
# Do not mount devices on boot because otherwise fsck may fail
ACTION=="add", PROGRAM!="/bin/grep ' / / rw[, ]' /proc/self/mountinfo", GOTO="media_by_label_auto_mount_end"

# Global mount options
ACTION=="add", ENV{mount_options}="exec,suid,noatime,users"
# Filesystem specific options
ACTION=="add", PROGRAM=="/sbin/blkid -o value -s TYPE %E{device}", RESULT=="vfat|ntfs", ENV{mount_options}="%E{mount_options},utf8,gid=100,umask=002"

# Get label
ACTION=="add", PROGRAM=="/sbin/blkid -o value -s LABEL %N", ENV{dir_name}="%c"
# Use basename to correctly handle labels such as ../mnt/foo
ACTION=="add", PROGRAM=="/usr/bin/basename '%E{dir_name}'", ENV{dir_name}="%c"
ACTION=="add", ENV{dir_name}!="?*", ENV{dir_name}="usbhd-%k"

ACTION=="add", ENV{dir_name}=="?*", RUN+="/bin/mkdir -p '/media/%E{dir_name}'", RUN+="/bin/mount -o %E{mount_options} /dev/%k '/media/%E{dir_name}'"
ACTION=="remove", ENV{dir_name}=="?*", RUN+="/bin/umount -l '/media/%E{dir_name}'"
ACTION=="remove", ENV{dir_name}=="?*", RUN+="/bin/rmdir '/media/%E{dir_name}'"
LABEL="media_by_label_auto_mount_end"