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abstract out multiple quota .seq files into a shared common routine.

##/bin/sh

#
# Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
# 
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
# 
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# 
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like.  Any license provided herein, whether implied or
# otherwise, applies only to this software file.  Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
# 
# You should have received a copy of the GNU General Public License along
# with this program; if not, write the Free Software Foundation, Inc., 59
# Temple Place - Suite 330, Boston MA 02111-1307, USA.
# 
# Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
# Mountain View, CA  94043, or:
# 
# http://www.sgi.com 
# 
# For further information regarding this notice, see: 
# 
# http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
#

# we need common.config
if ! . ./common.config
then
    echo "$iam: failed to source common.config"
    exit 1
fi

# make sure we have a standard umask
umask 022

# awk
AWK_PROG=awk

# ps
PS_HAVE_BSD=false
PS_ALL_FLAGS=-efw

# host os
PLATFORM=linux

# extra parameters for fsstress
FSSTRESS_AVOID="-f resvsp=0 -f unresvsp=0"

# env variables for mem checking
#EF_PROTECT_FREE=1 # efence
#export EF_PROTECT_FREE
# Not used because we get weird errors of form:
# ElectricFence Exiting: mmap() failed: Cannot allocate memory

export AWK_PROG PS_HAVE_BSD PS_ALL_FLAGS PLATFORM

# we override mount so we can specify mount options

mount()
{
    case "$*"
    in
        *remount*)
            /bin/mount $*
            ;;
        *ext2*)
            /bin/mount $*
            ;;
        *xfs*)
            /bin/mount $* $MOUNT_OPTIONS
            ;;
        *)
            /bin/mount $*
            ;;
    esac
}

#

_get_pids_by_name()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _get_pids_by_name process-name" 1>&2
	exit 1
    fi

    # Algorithm ... all ps(1) variants have a time of the form MM:SS or
    # HH:MM:SS before the psargs field, use this as the search anchor.
    #
    # Matches with $1 (process-name) occur if the first psarg is $1
    # or ends in /$1 ... the matching uses sed's regular expressions,
    # so passing a regex into $1 will work.

    ps $PS_ALL_FLAGS \
    | sed -n \
	-e 's/$/ /' \
	-e 's/[ 	][ 	]*/ /g' \
	-e 's/^ //' \
	-e 's/^[^ ]* //' \
	-e "/[0-9]:[0-9][0-9]  *[^ ]*\/$1 /s/ .*//p" \
	-e "/[0-9]:[0-9][0-9]  *$1 /s/ .*//p"
}

# fqdn for localhost
#
_get_fqdn()
{
    host=`hostname`
    nslookup $host | $AWK_PROG '{ if ($1 == "Name:") print $2 }'
}

# fix malloc libs output
#
_fix_malloc()
{
    # filter out the Electric Fence notice
    perl -e '
        while (<>) {
            if (defined $o && /^\s+Electric Fence/) {
                chomp($o);
                print "$o";
                undef $o;
                next;
            }
            print $o if (defined $o);

            $o=$_;
        }
        print $o if (defined $o);
    '
}

# check if run as root
#
_need_to_be_root()
{
    id=`id | sed -e 's/(.*//' -e 's/.*=//'`
    if [ "$id" -ne 0 ]
    then
	echo "Arrgh ... you need to be root (not uid=$id) to run this test"
	exit 1
    fi
}


#
# _df_device : get an IRIX style df line for a given device 
#
#       - returns "" if not mounted
#       - returns fs type in field two (ala IRIX)
#       - joins line together if split by fancy df formatting
#       - strips header etc
#

_df_device()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _df_device device" 1>&2
	exit 1
    fi
    
    df -T 2>/dev/null | $AWK_PROG -v what=$1 '
        match($1,what) && NF==1 { 
            v=$1
            getline
            print v, $0
            exit
        }
        match($1,what) {
            print
            exit
        }
    '
}

#
# _df_dir : get an IRIX style df line for device where a directory resides
#
#       - returns fs type in field two (ala IRIX)
#       - joins line together if split by fancy df formatting
#       - strips header etc
#

_df_dir()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _df_dir device" 1>&2
	exit 1
    fi
    
    df -T $1 2>/dev/null | $AWK_PROG -v what=$1 '
        NR == 2 && NF==1 { 
            v=$1
            getline 
            print v, $0;
            exit 0
        }
        NR == 2 {
            print;
            exit 0
        }
        {}
    '
    # otherwise, nada
}

# return percentage used disk space for mounted device

_used()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _used device" 1>&2
	exit 1
    fi
    
    _df_device $1 | $AWK_PROG '{ sub("%", "") ; print $6 }'
}

# return the FS type of a mounted device
#
_fs_type()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _fs_type device" 1>&2
	exit 1
    fi
    
    _df_device $1 | $AWK_PROG '{ print $2 }'
}

# return the FS mount options of a mounted device
#
_fs_options()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _fs_options device" 1>&2
	exit 1
    fi
    
    $AWK_PROG -v dev=$1 '
        match($1,dev) { print $4 }
    ' </proc/mounts
    
}

# returns device number if a file is a block device
#
_is_block_dev()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _is_block_dev dev" 1>&2
	exit 1
    fi
    
    [ -b $1 ] && src/lstat64 $1 | $AWK_PROG '/Device type:/ { print $9 }'
}

# Do a command, log it to $seq.full, optionally test return status
# and die if command fails. If called with one argument _do executes the
# command, logs it, and returns its exit status. With two arguments _do
# first prints the message passed in the first argument, and then "done"
# or "fail" depending on the return status of the command passed in the
# second argument. If the command fails and the variable _do_die_on_error
# is set to "always" or the two argument form is used and _do_die_on_error
# is set to "message_only" _do will print an error message to
# $seq.out and exit.

_do()
{
  if [ $# -eq 1 ]; then
    _cmd=$1
  elif [ $# -eq 2 ]; then
    _note=$1
    _cmd=$2
    echo -n "$_note... "
  else
    echo "Usage: _do [note] cmd" 1>&2
    status=1; exit
  fi

  (eval "echo '---' \"$_cmd\"") >>$seq.full
  (eval "$_cmd") >$tmp._out 2>&1; ret=$?
  cat $tmp._out | _fix_malloc >>$seq.full
  if [ $# -eq 2 ]; then
    if [ $ret -eq 0 ]; then
      echo "done"
    else
      echo "fail"
    fi
  fi
  if [ $ret -ne 0  ] \
     && [ "$_do_die_on_error" = "always" \
	 -o \( $# -eq 2 -a "$_do_die_on_error" = "message_only" \) ]
  then
      [ $# -ne 2 ] && echo
      eval "echo \"$_cmd\" failed \(returned $ret\): see $seq.full"
      status=1; exit
  fi

  return $ret
}

# bail out, setting up .notrun file
# 
_notrun()
{
    echo "$*" >$seq.notrun
    echo "$seq not run: $*"
    status=0
    exit
}

# just plain bail out
# 
_fail()
{
    echo "$*" | tee -a $seq.full
    echo "(see $seq.full for details)"
    status=1
    exit 1
}

# this test needs a scratch partition - check we're ok & unmount it
# 
_require_scratch()
{

    if [ -z "$SCRATCH_DEV" -o "`_is_block_dev $SCRATCH_DEV`" = "" ]
    then
        _notrun "this test requires a valid \$SCRATCH_DEV"
    fi
    
    if [ "`_is_block_dev $SCRATCH_DEV`" = "`_is_block_dev $TEST_DEV`" ]
    then
        _notrun "this test requires a valid \$SCRATCH_DEV"
    fi
    
    # mounted?
    if mount | grep -q $SCRATCH_DEV
    then 
        # if it's mounted, make sure its on $SCRATCH_MNT
        if ! mount | grep $SCRATCH_DEV | grep -q $SCRATCH_MNT
        then 
            echo "\$SCRATCH_DEV is mounted but not on \$SCRATCH_MNT - aborting"
            exit 1
        fi
        
        # and then unmount it
    
        if ! umount $SCRATCH_DEV
        then
            echo "failed to unmount $SCRATCH_DEV"
            exit 1
        fi
    fi
    
    # should be ok now

}

# this test needs a logdev 
# 
_require_logdev()
{
    if [ -z "$SCRATCH_LOGDEV" -o ! -b "$SCRATCH_LOGDEV" ]
    then
        _notrun "This test requires a valid \$SCRATCH_LOGDEV" 
    fi
}

# this test requires loopback device support
# 
_require_loop()
{
    if grep loop /proc/devices >/dev/null 2>&1
    then
	:
    else
	_notrun "This test requires loopback device support"
    fi
}


# check that a FS is mounted as XFS. if so, return mount point
#
_xfs_mounted()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _xfs_mounted device" 1>&2
	exit 1
    fi
    
    device=$1
    
    if mount | grep $device | $AWK_PROG '
        /type xfs/  { print $3 ; exit 0 }
        END         { exit 1 }
    '
    then
        echo "_xfs_mounted: $device is not a mounted XFS FS"
        exit 1
    fi
}


# setup the .out file link, depending on which form of quota is
# enabled as this often influences how the test output appears.
# [NB: SCRATCH_DEV must be mounted for this to work]
# 
_setup_seq_out()
{
    # this lets us phase use of this into the dump/restore tests easier...
    [ -f $seq.ugquota -a -f $seq.noquota -a $seq.usrquota -a $seq.grpquota ] \
	|| return

    rm -f $seq.out
    if src/feature -U $SCRATCH_DEV
    then
	if src/feature -G $SCRATCH_DEV
	then
	    ln $seq.ugquota $seq.out
	else
	    ln $seq.usrquota $seq.out
	fi
    elif src/feature -G $SCRATCH_DEV
    then
	ln $seq.grpquota $seq.out
    else
	ln $seq.noquota $seq.out
    fi
}


# remount a FS to a new mode (ro or rw)
#
_remount()
{
    if [ $# -ne 2 ]
    then
	echo "Usage: _remount device ro/rw" 1>&2
	exit 1
    fi
    device=$1
    mode=$2
    
    if ! mount -o remount,$mode $device
    then
        echo "_remount: failed to remount filesystem on $device as $mode"
        exit 1
    fi
    
    # we might like to check here later
    #options=`_fs_options $device`

}

# run xfs_check on a FS. 
#
# if the filesystem is mounted, it's either remounted ro before being
# checked or it's unmounted and then remounted
#

USE_REMOUNT=0

_check_fs()
{
    if [ $# -ne 1 ]
    then
	echo "Usage: _check_fs device" 1>&2
	exit 1
    fi
    
    device=$1
    type=`_fs_type $device`
    ok=1
    
    if [ "$type" = "xfs" ]
    then
        # mounted... 
        
        if [ $USE_REMOUNT -eq 0 ]
        then
            mountpoint=`_xfs_mounted $device`
            umount $device
        else
            _remount $device ro
        fi
    fi

    xfs_logprint -t $device 2>&1 | tee $tmp.fs_check | grep -q "<CLEAN>"
    if [ $? -ne 0 ]
    then
        echo "_check_fs: filesystem on $device has dirty log (see $seq.full)"
        
        echo "_check_fs: filesystem on $device has dirty log"   >>$seq.full
        echo "*** xfs_logprint -t output ***"                   >>$seq.full
        cat $tmp.fs_check                                       >>$seq.full
        echo "*** end xfs_logprint output"                      >>$seq.full
        
        ok=0
    fi
        
    
    xfs_check $device 2>&1 | _fix_malloc >$tmp.fs_check 
    if [ -s $tmp.fs_check ]
    then
        echo "_check_fs: filesystem on $device is inconsistent (c) (see $seq.full)"
        
        echo "_check_fs: filesystem on $device is inconsistent" >>$seq.full
        echo "*** xfs_check output ***"                         >>$seq.full
        cat $tmp.fs_check                                       >>$seq.full
        echo "*** end xfs_check output"                         >>$seq.full
        
        ok=0
    fi
    
    if ! xfs_repair -n $device >$tmp.fs_check 2>&1
    then
        echo "_check_fs: filesystem on $device is inconsistent (r) (see $seq.full)"
        
        echo "_check_fs: filesystem on $device is inconsistent" >>$seq.full
        echo "*** xfs_repair -n output ***"                     >>$seq.full
        cat $tmp.fs_check | _fix_malloc                         >>$seq.full
        echo "*** end xfs_repair output"                        >>$seq.full
        
        ok=0
    fi
    rm -f $tmp.fs_check
    
    if [ $ok -eq 0 ]
    then
        echo "*** mount output ***"                             >>$seq.full
        mount                                                   >>$seq.full
        echo "*** end mount output"                             >>$seq.full
    fi
    
    if [ "$type" = "xfs" ]
    then
        # mounted... 
        if [ $USE_REMOUNT -eq 0 ]
        then
            if ! mount -t xfs $device $mountpoint
            then
                echo "!!! failed to remount $device on $mountpoint"
                ok=0
            fi
        else
            _remount $device rw
        fi
    fi
    
    [ $ok -eq 0 ] && exit 1
    return 0    
}

################################################################################

[ -d /usr/bsd ] && PATH=$PATH:/usr/bsd
[ -d /usr/freeware/bin ] && PATH=$PATH:/usr/freeware/bin

if [ "$iam" != new ]
then

    # make some further configuration checks here
    
    if [ "$TEST_DEV" = ""  ]
    then
        echo "common.rc: Error: \$TEST_DEV is not set"
        exit 1
    fi
    
    if [ "`_fs_type $TEST_DEV`" != "xfs" ]
    then
        echo "common.rc: Error: \$TEST_DEV ($TEST_DEV) is not a MOUNTED XFS filesystem"
        df -T $TEST_DEV
        exit 1
    fi

fi

# check for some required biunaries on our $PATH
#
for exec in mkfs.xfs xfs_logprint xfs_check xfs_repair xfs_db
do
    if which $exec >/dev/null 2>&1 
    then
	:
    else
	echo "common.rc: cannot find $exec on \$PATH=$PATH"
	exit 1
    fi
done

# make sure this script returns success
/bin/true