summaryrefslogtreecommitdiffstats
path: root/meta/packages/initscripts/initscripts-1.0/checkroot.sh
blob: 8255038c328a9cd0521317500263f411c4792191 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
#
# checkroot.sh	Check to root filesystem.
#
# Version:	@(#)checkroot.sh  2.84  25-Jan-2002  miquels@cistron.nl
#

. /etc/default/rcS

#
# Set SULOGIN in /etc/default/rcS to yes if you want a sulogin to be spawned
# from this script *before anything else* with a timeout, like SCO does.
#
test "$SULOGIN" = yes && sulogin -t 30 $CONSOLE

#
# Ensure that bdflush (update) is running before any major I/O is
# performed (the following fsck is a good example of such activity :).
#
test -x /sbin/update && update

#
# Read /etc/fstab.
#
exec 9>&0 </etc/fstab
rootmode=rw
rootopts=rw
rootcheck=no
swap_on_md=no
devfs=
while read fs mnt type opts dump pass junk
do
	case "$fs" in
		""|\#*)
			continue;
			;;
		/dev/md*)
			# Swap on md device.
			test "$type" = swap && swap_on_md=yes
			;;
		/dev/*)
			;;
		*)
			# Might be a swapfile.
			test "$type" = swap && swap_on_md=yes
			;;
	esac
	test "$type" = devfs && devfs="$fs"
	test "$mnt" != / && continue
	rootopts="$opts"
	test "$pass" = 0 -o "$pass" = "" && rootcheck=no
	case "$opts" in
		ro|ro,*|*,ro|*,ro,*)
			rootmode=ro
			;;
	esac
done
exec 0>&9 9>&-

#
# Activate the swap device(s) in /etc/fstab. This needs to be done
# before fsck, since fsck can be quite memory-hungry.
#
doswap=no
test -d /proc/1 || mount -n /proc
case "`uname -r`" in
	2.[0123].*)
		if test $swap_on_md = yes && grep -qs resync /proc/mdstat
		then
			test "$VERBOSE" != no && echo "Not activating swap - RAID array resyncing"
		else
			doswap=yes
		fi
		;;
	*)
		doswap=yes
		;;
esac
if test $doswap = yes
then
	test "$VERBOSE" != no && echo "Activating swap"
	swapon -a 2> /dev/null
fi

#
# Check the root filesystem.
#
if test -f /fastboot || test $rootcheck = no
then
  test $rootcheck = yes && echo "Fast boot, no filesystem check"
else
  #
  # Ensure that root is quiescent and read-only before fsck'ing.
  #
  mount -n -o remount,ro /
  if test $? = 0
  then
    if test -f /forcefsck
    then
	force="-f"
    else
	force=""
    fi
    if test "$FSCKFIX" = yes
    then
	fix="-y"
    else
	fix="-a"
    fi
    spinner="-C"
    case "$TERM" in
        dumb|network|unknown|"") spinner="" ;;
    esac
    test `uname -m` = s390 && spinner="" # This should go away
    test "$VERBOSE" != no && echo "Checking root filesystem..."
    fsck $spinner $force $fix /
    #
    # If there was a failure, drop into single-user mode.
    #
    # NOTE: "failure" is defined as exiting with a return code of
    # 2 or larger.  A return code of 1 indicates that filesystem
    # errors were corrected but that the boot may proceed.
    #
    if test "$?" -gt 1
    then
      # Surprise! Re-directing from a HERE document (as in
      # "cat << EOF") won't work, because the root is read-only.
      echo
      echo "fsck failed.  Please repair manually and reboot.  Please note"
      echo "that the root filesystem is currently mounted read-only.  To"
      echo "remount it read-write:"
      echo
      echo "   # mount -n -o remount,rw /"
      echo
      echo "CONTROL-D will exit from this shell and REBOOT the system."
      echo
      # Start a single user shell on the console
      /sbin/sulogin $CONSOLE
      reboot -f
    fi
  else
    echo "*** ERROR!  Cannot fsck root fs because it is not mounted read-only!"
    echo
  fi
fi

#
#	If the root filesystem was not marked as read-only in /etc/fstab,
#	remount the rootfs rw but do not try to change mtab because it
#	is on a ro fs until the remount succeeded. Then clean up old mtabs
#	and finally write the new mtab.
#
mount -n -o remount,$rootmode /
if test "$rootmode" = rw
then
	if test ! -L /etc/mtab
	then
		rm -f /etc/mtab~ /etc/nologin
		: > /etc/mtab
	fi
	mount -f -o remount /
	mount -f /proc
	test "$devfs" && grep -q '^devfs /dev' /proc/mounts && mount -f "$devfs"
fi

: exit 0