Andrew's git - scripts.git/blob

   1#!/bin/bash
   2
   3# smbbind.sh share                   mountpoint
   4# smbbind.sh "//SERVER/SHARE" "/mnt/somewhere"
   5
   6check_every=30   #Seconds
   7timeout_after=5  #Seconds
   8restart_after=30 #Seconds
   9
  10hide_path=~/.smbbind/
  11cifs_opts="rw,cache=strict,username=nt_username,password=nt_password,domain=nt_domain,uid=0,noforceuid,gid=0,noforcegid,file_mode=0755,dir_mode=0755,nounix,serverino,rsize=61440,wsize=57344,actimeo=60,_netdev"
  12
  13share="$1"
  14bind_mountpoint="$2"
  15
  16function clean {
  17        #Umount bindfs, next umount cifs, then exit.
  18        echo [..] Cleaning...
  19        #The only open handle opened on the cifs share should be the bindfs one.
  20        echo [..] forcing umounting bindfs on "$bind_mountpoint"
  21        kill -9 $bindfs_pid
  22        umount -f "$bind_mountpoint"
  23        echo [OK] Done.
  24        # Umounted bindfs, cifs should umount without problems
  25        echo [..] Forcing umounting cifs on "$cifs_mountpoint"
  26        umount -f "$cifs_mountpoint"
  27        umount -l "$cifs_mountpoint"
  28        echo [OK] Done cleaning.
  29}
  30
  31function finish {
  32        echo exiting...
  33        clean
  34        trap exit INT TERM EXIT
  35        exit
  36}
  37
  38trap finish INT TERM EXIT
  39
  40#Prepare environment
  41    mkdir $hide_path &>/dev/null
  42    cifs_mountpoint=$hide_path/$(echo $bind_mountpoint|tr '/' '_')
  43    mkdir -p $cifs_mountpoint &>/dev/null
  44    mkdir -p $bind_mountpoint &>/dev/null
  45
  46while true ; do
  47       
  48    #Mount things:
  49        echo [..] mounting cifs "$share" on "$cifs_mountpoint"
  50        if timeout 10 mount.cifs "$share" "$cifs_mountpoint"  -o $cifs_opts ; then
  51            echo [OK] mounted cifs "$share" on "$cifs_mountpoint"
  52
  53            echo [..] mounting bind "$cifs_mountpoint" on "$bind_mountpoint"
  54            bindfs "$cifs_mountpoint" "$bind_mountpoint"
  55            #Getting the pid of bindfs is tricky.
  56            bindfs_pid=$(ps -eo pid,args|grep bindfs |grep "$cifs_mountpoint" |grep "$bind_mountpoint" |cut -d " " -f 1)
  57            echo [OK] mounted bind "$cifs_mountpoint" on "$bind_mountpoint"
  58            
  59            #Check them
  60                echo [OK] Start Main check cycle, whill check every $check_every seconds...
  61                while true ; do
  62                    if ! timeout -k 1 $timeout_after ls "$bind_mountpoint" &>/dev/null ; then
  63                        echo no answer from bindfs for "$bind_mountpoint"
  64                        clean
  65                        break
  66                            #else
  67                        #echo Share is alive
  68                    fi
  69                    sleep $check_every
  70                done
  71
  72                else
  73            echo [!!] Cannot mount "$share" on "$cifs_mountpoint"
  74        fi
  75                
  76    echo [..] Waiting $restart_after seconds: $(date) 
  77    sleep $restart_after
  78
  79done