1#!/bin/sh
2#
3# Called from udev
4#
5# Attempt to mount any added block devices and umount any removed devices
6
7BASE_INIT="`readlink -f "@base_sbindir@/init"`"
8INIT_SYSTEMD="@systemd_unitdir@/systemd"
9
10if [ "x$BASE_INIT" = "x$INIT_SYSTEMD" ];then
11    # systemd as init uses systemd-mount to mount block devices
12    MOUNT="/usr/bin/systemd-mount"
13    UMOUNT="/usr/bin/systemd-umount"
14
15    if [ -x $MOUNT ] && [ -x $UMOUNT ];
16    then
17        logger "Using systemd-mount to finish mount"
18    else
19        logger "Linux init is using systemd, so please install systemd-mount to finish mount"
20        exit 1
21    fi
22else
23    MOUNT="/bin/mount"
24    UMOUNT="/bin/umount"
25fi
26
27PMOUNT="/usr/bin/pmount"
28
29for line in `grep -h -v ^# /etc/udev/mount.blacklist /etc/udev/mount.blacklist.d/*`
30do
31	if [ ` expr match "$DEVNAME" "$line" ` -gt 0 ];
32	then
33		logger "udev/mount.sh" "[$DEVNAME] is blacklisted, ignoring"
34		exit 0
35	fi
36done
37
38automount_systemd() {
39    name="`basename "$DEVNAME"`"
40
41    # Skip the partition which are already in /etc/fstab
42    grep "^[[:space:]]*$DEVNAME" /etc/fstab && return
43    for n in LABEL PARTLABEL UUID PARTUUID; do
44        tmp="$(lsblk -o $n $DEVNAME | sed -e '1d')"
45        test -z "$tmp" && continue
46        tmp="$n=$tmp"
47        grep "^[[:space:]]*$tmp" /etc/fstab && return
48    done
49
50    [ -d "/run/media/$name" ] || mkdir -p "/run/media/$name"
51
52    MOUNT="$MOUNT -o silent"
53
54    # If filesystemtype is vfat, change the ownership group to 'disk', and
55    # grant it with  w/r/x permissions.
56    case $ID_FS_TYPE in
57    vfat|fat)
58        MOUNT="$MOUNT -o umask=007,gid=`awk -F':' '/^disk/{print $3}' /etc/group`"
59        ;;
60    # TODO
61    *)
62        ;;
63    esac
64
65    if ! $MOUNT --no-block -t auto $DEVNAME "/run/media/$name"
66    then
67        #logger "mount.sh/automount" "$MOUNT -t auto $DEVNAME \"/run/media/$name\" failed!"
68        rm_dir "/run/media/$name"
69    else
70        logger "mount.sh/automount" "Auto-mount of [/run/media/$name] successful"
71        touch "/tmp/.automount-$name"
72    fi
73}
74
75automount() {
76	name="`basename "$DEVNAME"`"
77
78	if [ -x "$PMOUNT" ]; then
79		$PMOUNT $DEVNAME 2> /dev/null
80	elif [ -x $MOUNT ]; then
81		$MOUNT $DEVNAME 2> /dev/null
82	fi
83
84	# If the device isn't mounted at this point, it isn't
85	# configured in fstab
86	grep -q "^$DEVNAME " /proc/mounts && return
87
88	! test -d "/run/media/$name" && mkdir -p "/run/media/$name"
89	# Silent util-linux's version of mounting auto
90	if [ "x`readlink $MOUNT`" = "x/bin/mount.util-linux" ] ;
91	then
92		MOUNT="$MOUNT -o silent"
93	fi
94
95	# If filesystem type is vfat, change the ownership group to 'disk', and
96	# grant it with  w/r/x permissions.
97	case $ID_FS_TYPE in
98	vfat|fat)
99		MOUNT="$MOUNT -o umask=007,gid=`awk -F':' '/^disk/{print $3}' /etc/group`"
100		;;
101	# TODO
102	*)
103		;;
104	esac
105
106	if ! $MOUNT -t auto $DEVNAME "/run/media/$name"
107	then
108		#logger "mount.sh/automount" "$MOUNT -t auto $DEVNAME \"/run/media/$name\" failed!"
109		rm_dir "/run/media/$name"
110	else
111		logger "mount.sh/automount" "Auto-mount of [/run/media/$name] successful"
112		touch "/tmp/.automount-$name"
113	fi
114}
115
116rm_dir() {
117	# We do not want to rm -r populated directories
118	if test "`find "$1" | wc -l | tr -d " "`" -lt 2 -a -d "$1"
119	then
120		! test -z "$1" && rm -r "$1"
121	else
122		logger "mount.sh/automount" "Not removing non-empty directory [$1]"
123	fi
124}
125
126# No ID_FS_TYPE for cdrom device, yet it should be mounted
127name="`basename "$DEVNAME"`"
128[ -e /sys/block/$name/device/media ] && media_type=`cat /sys/block/$name/device/media`
129
130if [ "$ACTION" = "add" ] && [ -n "$DEVNAME" ] && [ -n "$ID_FS_TYPE" -o "$media_type" = "cdrom" ]; then
131    # Note the root filesystem can show up as /dev/root in /proc/mounts,
132    # so check the device number too
133    if expr $MAJOR "*" 256 + $MINOR != `stat -c %d /`; then
134        if [ "`basename $MOUNT`" = "systemd-mount" ];then
135            automount_systemd
136        else
137            automount
138        fi
139    fi
140fi
141
142if [ "$ACTION" = "remove" ] || [ "$ACTION" = "change" ] && [ -x "$UMOUNT" ] && [ -n "$DEVNAME" ]; then
143    for mnt in `cat /proc/mounts | grep "$DEVNAME" | cut -f 2 -d " " `
144    do
145        $UMOUNT $mnt
146    done
147
148    # Remove empty directories from auto-mounter
149    name="`basename "$DEVNAME"`"
150    test -e "/tmp/.automount-$name" && rm_dir "/run/media/$name"
151fi
152