#!/sbin/sh
# Copyright 2000, International Business Machines Corporation and others.
# All Rights Reserved.
# 
# This software has been released under the terms of the IBM Public
# License.  For details, see the LICENSE file in the top-level source
# directory or online at http://www.openafs.org/dl/license10.html

# @(#) $Revision$
#
##################################################################
#
# Name :
#	 bcheckrc (afs) - /sbin/fs/afs/bcheckrc
#
# Description
# 	This file contains scripts/commands necessary to checks
#	the afs file systems before mounting.
#	
#	It should be invoked by the generic bcheckrc script only.
#
# Input Parameters:
#	None
#
# Expected results:
#	see description.
#
# Side effects of this test:
#  	none
#
# Supporting files and Relationship:
#        i) various "/sbin/fs/afs" commands are used by this script.
#       ii) generic bcheckrc scrtipt located in the /sbin
#           directory invokes this script.
#
#
##################################################################
#
#
# Description - This function will check (fsck) all the afs file systems
# in the static file system table, /etc/fstab.
#
# Result values - status = 0 for success
#                 status = non-0 for failure
#
# Used (exclusively) by - /sbin/bcheckrc's fsck_afs portion
#


#
#	ROOTSHELL   - is the command that gives the user a shell in which
#		      to run fsck interactively.  Someday fsck -y should
#		      be fixed to give the right answers to the questions,
#		      rather than always "yes", so this error-prone
#		      interactive fixing business can go away entirely.
#

	ROOTSHELL='/sbin/sh'

#	set stty (for manual mode)

	/sbin/stty clocal icanon echo opost onlcr ixon icrnl ignpar erase "^h"

#	
#	In the remaining part of the function is devoted to the actual
#	cleaning of the afs file systems.
#
#		1) run fsck -m and determine if any afs file systems
#		   need cleaning.
#
#		2) check exit status of fsck -m -
#
#			0 - indicates (and lists) that  this afs file
#			    system was verified clean.  Continues to
#			    boot.
#
#		        * - indicates and lists the file systems that 
#			    were not properly shutdown.  File systems
#			    that are corrupt should be fixed before
#			    continuing with the boot.
#
#
#		3) exit the function with the appropriate return status.
#
#
#		When the file systems are corrupt the following steps are
#		taken ...
#		
#			1) fsck_afs(1M) command is invoked using the
#			following command line - "/sbin/fsck -F afs -P -f"
#			(refer to the fsck_afs(1M) man page)
#			
#			2) The following actions are taken according to
#			the appropriate return values ...
#				 0 - the corrupt file system was fixed.
#				     Continue with boot'ing.
#				 * - could not automatically fix the
#				     corrupt file system, going into
#				     manual mode (shell).



afs_partitions_clean()
{
    serverPartition=0 		# number of AFS server partitions
	
    for name in `/sbin/awk ' $0 ~ /^[ \t]*#/ { next }
			     $3 == "afs" { print $1 }' /etc/fstab`
    do
        /sbin/fs/hfs/fsck -m $name 	# check sanity
        if [ $? -ne 0 ]
        then
		echo Cleaning AFS server partition $name
               	/sbin/fs/afs/fsck -P -f $name

		case $? in
		0)
			echo AFS server partition $name is fixed
			;;
                *)
                        echo "\007\n\n"
                        echo "UNEXPECTED ERROR DURING fsck -P, RUN fsck INTERACT
IVELY!"
                        echo "LOGGING IN AS root FOR MANUAL fsck, ENTER ^D WHEN
FILE SYSTEM FIXED"
                        PS1="(in bcheckrc)# "
                        export PS1
                        $ROOTSHELL
                        echo "CONTINUING bcheckrc"
			;;
		esac

	
        fi
	serverPartition=1
    done
    
    if [ serverPartition -ne 1 ]
    then
    	echo "NO AFS server partitions found"
    fi
	 
    exit 0
}

afs_partitions_clean

#*********************************************************************
# End of bcheckrc (afs)
#*********************************************************************