137 lines
3.8 KiB
Bash
Executable File
137 lines
3.8 KiB
Bash
Executable File
#!/bin/bash
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parse_device(){
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device=$1
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if echo $device | grep -E -q "^UUID="; then
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echo $device | sed 's:^UUID=:/dev/disk/by-uuid/:' | tr -d "\n"
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elif echo $device | grep -E -q "^LABEL="; then
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echo $device | sed 's:^LABEL=:/dev/disk/by-label/:' | tr -d "\n"
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else
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echo $device | tr -d "\n"
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fi
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}
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findmnt_dev()
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{
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fstab_path=$1
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target_dir=$2
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cat "$fstab_path" | grep -Ev "^#" | awk '{print $1 " " $2 " " $3 " " $4 " " $5 " " $6}' |
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while read device mntdir fstype options dump passno ;
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do
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if [ "$mntdir" = "$target_dir" ] ; then
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parse_device "$device"
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break
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fi
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done
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}
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is_remote(){
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fstype=$1
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if [ nfs = "$fstype" ] || [ nfs4 = "$fstype" ] || [ smbfs = "$fstype" ] || [ cifs = "$fstype" ] || [ coda = "$fstype" ] || [ ncp = "$fstype" ]; then
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echo yes
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elif [ ncpfs = "$fstype" ] || [ ocfs2 = "$fstype" ] || [ gfs = "$fstype" ] || [ gfs2 = "$fstype" ] || [ ceph = "$fstype" ]; then
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echo yes
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else
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echo no
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fi
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}
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parse_options(){
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options=$1
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optstr="showthrough bootwait nobootwait timeout ro"
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echo "$options" | awk -v optstr="$optstr" 'BEGIN{FS=","; split(optstr, opts, " ");} {
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result="";
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for( i=1; i<=NF; i++ ){
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flag=0;
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for( opt in opts ){
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if( $i == opts[opt] ){
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flag=1;
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break;
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}
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}
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if( flag == 1 )
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continue;
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if( i==1 )
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result=$i;
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else
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result=result","$i;
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}
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print result
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}'
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}
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is_system_partition(){
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mntdir=$1
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sys_parts="/boot /home /var /usr /srv /opt /usr/local" # files under /tmp is temporary, need to remove
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echo $sys_parts | grep -Eq "(^| )"$mntdir"( |$)" && echo "yes" || echo "no"
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}
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mount_fstab(){
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fstab_path=${rootmnt}/etc/fstab
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if [ ! -e "$fstab_path" ]; then
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fstab_path=/etc/fstab-backup
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fi
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# 将/usr/share/initramfs-tools/scripts/local-bottom/kybackup脚本放到/usr/share/initramfs-tools/scripts/init-bottom下后，在备份还原前就已经mount了各个分区（bind的没有mount）
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echo "rw mode remount $fstab_path begin"
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local mounted_path=
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local tmp_path=
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cat "$fstab_path" | grep -Ev "^#" | awk '{print $1 " " $2 " " $3 " " $4 " " $5 " " $6}' |
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while read device mntdir fstype options dump passno ;
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do
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device=$(parse_device $device)
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#mntopts=$(parse_options $options)
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mntopts=defaults,rw
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#nodev filesystems
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( cat /proc/filesystems | grep "$fstype" | grep -q nodev ) && continue
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#virtual or network filesystems
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([ none = "$mntdir" ] || [ yes = $(is_remote $fstype) ]) && continue
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#swap or backup分区，backup分区后面单独挂载，根分区已挂载
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([ swap = "$fstype" ] || [ /backup = "$mntdir" ] || [ / = "$mntdir" ]) && continue
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#not system partition
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#[ no = $(is_system_partition $mntdir) ] && continue
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#去掉首字符'/'
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#mntdir_name=$(echo $mntdir | sed 's:^/::g')
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#target_mntdir="/$(echo $mntdir_name | sed 's:/:-:g').orig"
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target_mntdir=${rootmnt}${mntdir}
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mounted_path=
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tmp_path=
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mkdir -p "$target_mntdir"
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tmp_path=$target_mntdir
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mounted_path=$(mount | awk -v v_path=${tmp_path} '{ if($3 == v_path) print $3 }')
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if [[ $options =~ bind ]] ; then
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echo "mount -o $options ${rootmnt}${device} $target_mntdir"
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mount -o $options "${rootmnt}${device}" "$target_mntdir"
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elif [ "x" == "x"${mounted_path} ]; then
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echo "mount -n -t $fstype -o $mntopts $device $target_mntdir"
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mount -n -t $fstype -o $mntopts $device "$target_mntdir"
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else
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# echo "mount -n -t $fstype -o $mntopts $device $target_mntdir"
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# mount -n -t $fstype -o $mntopts $device "$target_mntdir"
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echo "mount -o rw,remount $target_mntdir"
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mount -o rw,remount "$target_mntdir"
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fi
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#如果一个分区已经安装了，则下列会报错后不再继续
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#if [ $? -ne 0 ]; then
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# panic "Failed to mount %s on %s" "$device" "$target_mntdir"
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# break
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#fi
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done || exit 1
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echo "rw mode remount $fstab_path end"
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mount
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}
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mount_fstab
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