| 1 | 3 | czfcentos | #!/bin/bash |
| 2 | | | |
| 3 | | | echo -n "Re-mounting root ... " |
| 4 | | | |
| 5 | | | if mount / -noremount,ro,noatime; then |
| 6 | | | echo "done." |
| 7 | | | echo Root is now read-only. |
| 8 | | | exit 0 |
| 9 | | | else |
| 10 | | | if [[ "$1" == "-f" ]]; then |
| 11 | | | echo Filesystem busy, forcing remount. |
| 12 | | | |
| 13 | | | echo -n Locating data partitions ... |
| 14 | | | NODEV=`echo \`grep < /proc/filesystems nodev | awk '{print "^" $2 "|"}'\` | sed -e "s/ //g" -e "s/|$//g"` |
| 15 | | | RWFS=`awk < /proc/mounts "\\$4 ~ \"^rw\" { if (\\$1!=\"none\" && \\$2!=\"/\" && \\$3 !~ /$NODEV/) print \\$2}"` |
| 16 | | | echo " done." |
| 17 | | | |
| 18 | | | echo -n Syncing filesystems ... |
| 19 | | | sync |
| 20 | | | echo " done." |
| 21 | | | |
| 22 | | | echo -n Re-mounting everything read-only ... |
| 23 | | | echo u > /proc/sysrq-trigger |
| 24 | | | echo " done." |
| 25 | | | |
| 26 | | | if [[ $RWFS ]]; then |
| 27 | | | echo -n Re-mounting data partitions read-write: |
| 28 | | | for FS in $RWFS; do |
| 29 | | | echo -n " [$FS]" |
| 30 | | | mount $FS -noremount,rw,noatime |
| 31 | | | done |
| 32 | | | echo " done." |
| 33 | | | fi |
| 34 | | | echo Root is now read-only. |
| 35 | | | exit 0 |
| 36 | | | fi |
| 37 | | | echo Failed. If you\'re sure you know what are you doing, try \"mro -f\". |
| 38 | | | exit 1 |
| 39 | | | fi |
| 40 | | | |
| 41 | | | |
