Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 1 | #!/bin/sh |
| 2 | ### BEGIN INIT INFO |
| 3 | # Provides: checkroot |
| 4 | # Required-Start: udev |
| 5 | # Required-Stop: |
| 6 | # Default-Start: S |
| 7 | # Default-Stop: |
| 8 | # Short-Description: Check to root file system. |
| 9 | ### END INIT INFO |
| 10 | |
| 11 | . /etc/default/rcS |
| 12 | |
| 13 | # |
| 14 | # Set SULOGIN in /etc/default/rcS to yes if you want a sulogin to be spawned |
| 15 | # from this script *before anything else* with a timeout, like SCO does. |
| 16 | # |
| 17 | test "$SULOGIN" = yes && sulogin -t 30 $CONSOLE |
| 18 | |
| 19 | # |
| 20 | # Read /etc/fstab. |
| 21 | # |
| 22 | exec 9< /etc/fstab |
| 23 | rootmode=rw |
| 24 | rootopts=rw |
| 25 | rootcheck=$ENABLE_ROOTFS_FSCK |
| 26 | swap_on_md=no |
| 27 | devfs= |
| 28 | while read fs mnt type opts dump pass junk <&9 |
| 29 | do |
| 30 | case "$fs" in |
| 31 | ""|\#*) |
| 32 | continue; |
| 33 | ;; |
| 34 | /dev/md*) |
| 35 | # Swap on md device. |
| 36 | test "$type" = swap && swap_on_md=yes |
| 37 | ;; |
| 38 | /dev/*) |
| 39 | ;; |
| 40 | *) |
| 41 | # Might be a swapfile. |
| 42 | test "$type" = swap && swap_on_md=yes |
| 43 | ;; |
| 44 | esac |
| 45 | test "$type" = devfs && devfs="$fs" |
| 46 | test "$mnt" != / && continue |
| 47 | rootopts="$opts" |
| 48 | test "$pass" = 0 -o "$pass" = "" && rootcheck=no |
| 49 | case "$opts" in |
| 50 | ro|ro,*|*,ro|*,ro,*) |
| 51 | rootmode=ro |
| 52 | ;; |
| 53 | esac |
| 54 | done |
| 55 | exec 0>&9 9>&- |
| 56 | |
| 57 | # Check for conflicting configurations |
| 58 | if [ "$rootmode" = "ro" -a "$ROOTFS_READ_ONLY" = "no" ] || \ |
| 59 | [ "$rootmode" = "rw" -a "$ROOTFS_READ_ONLY" = "yes" ]; then |
| 60 | echo "" |
| 61 | echo "WARN: conflicting configurations in /etc/fstab and /etc/default/rcS" |
| 62 | echo " regarding the writability of rootfs. Please fix one of them." |
| 63 | echo "" |
| 64 | fi |
| 65 | |
| 66 | |
| 67 | # |
| 68 | # Activate the swap device(s) in /etc/fstab. This needs to be done |
| 69 | # before fsck, since fsck can be quite memory-hungry. |
| 70 | # |
| 71 | test "$VERBOSE" != no && echo "Activating swap" |
| 72 | swapon -a 2> /dev/null |
| 73 | |
| 74 | # |
| 75 | # Check the root filesystem. |
| 76 | # |
| 77 | if test -f /fastboot || test $rootcheck = no |
| 78 | then |
| 79 | test $rootcheck = yes && echo "Fast boot, no filesystem check" |
| 80 | else |
| 81 | # |
| 82 | # Ensure that root is quiescent and read-only before fsck'ing. |
| 83 | # |
| 84 | mount -n -o remount,ro / |
| 85 | if test $? = 0 |
| 86 | then |
| 87 | if test -f /forcefsck |
| 88 | then |
| 89 | force="-f" |
| 90 | else |
| 91 | force="" |
| 92 | fi |
| 93 | if test "$FSCKFIX" = yes |
| 94 | then |
| 95 | fix="-y" |
| 96 | else |
| 97 | fix="-a" |
| 98 | fi |
| 99 | spinner="-C" |
| 100 | case "$TERM" in |
| 101 | dumb|network|unknown|"") spinner="" ;; |
| 102 | esac |
| 103 | test `uname -m` = s390 && spinner="" # This should go away |
| 104 | test "$VERBOSE" != no && echo "Checking root filesystem..." |
| 105 | fsck $spinner $force $fix / |
| 106 | # |
| 107 | # If there was a failure, drop into single-user mode. |
| 108 | # |
| 109 | # NOTE: "failure" is defined as exiting with a return code of |
| 110 | # 2 or larger. A return code of 1 indicates that filesystem |
| 111 | # errors were corrected but that the boot may proceed. |
| 112 | # |
| 113 | if test "$?" -gt 1 |
| 114 | then |
| 115 | # Surprise! Re-directing from a HERE document (as in |
| 116 | # "cat << EOF") won't work, because the root is read-only. |
| 117 | echo |
| 118 | echo "fsck failed. Please repair manually and reboot. Please note" |
| 119 | echo "that the root filesystem is currently mounted read-only. To" |
| 120 | echo "remount it read-write:" |
| 121 | echo |
| 122 | echo " # mount -n -o remount,rw /" |
| 123 | echo |
| 124 | echo "CONTROL-D will exit from this shell and REBOOT the system." |
| 125 | echo |
| 126 | # Start a single user shell on the console |
| 127 | /sbin/sulogin $CONSOLE |
| 128 | reboot -f |
| 129 | fi |
| 130 | else |
| 131 | echo "*** ERROR! Cannot fsck root fs because it is not mounted read-only!" |
| 132 | echo |
| 133 | fi |
| 134 | fi |
| 135 | |
| 136 | # |
| 137 | # If the root filesystem was not marked as read-only in /etc/fstab, |
| 138 | # remount the rootfs rw but do not try to change mtab because it |
| 139 | # is on a ro fs until the remount succeeded. Then clean up old mtabs |
| 140 | # and finally write the new mtab. |
| 141 | # |
| 142 | mount -n -o remount,$rootmode / |
| 143 | if test "$rootmode" = rw |
| 144 | then |
| 145 | ln -sf /proc/mounts /dev/mtab |
| 146 | fi |
| 147 | |
| 148 | : exit 0 |