Shell script to run firefox under gdb

RunBugs.sh (text/plain), 7.46 KB, created by Robert Bradbury on 2009-08-23 16:39:47 UTC

# RunBugs.sh - Run "development" firefox with bug filing bookmarks

CURDIR=`pwd`		# Should be current directory

FIREFOXDIR="";		# usually /usr/local/lib/firefox-3.0.12pre, e.g. BonEcho
for PC in local LOCAL LCL UNKNOWN
do
    if test "$PC" = UNKNOWN; then echo "Missing firefox directory"; exit 1; fi
    FIREFOXDIR=/usr/$PC/lib/firefox-3.0.12pre
    if test -d $FIREFOXDIR; then break; fi
done

FIREFOX=$FIREFOXDIR/firefox-bin
if test ! -x $FIREFOX; then echo "Missing: $FIREFOX"; exit 1; fi

# MOZ_NO_REMOTE *must* be set to avoid connecting to "running" instance
export MOZ_NO_REMOTE=1		# Enable running multiple instances (profiles)
#export NO_EM_RESTART=1		# Don't re-exec firefox-bin

FFARGS=""
#FFARGS="$FFARGS --safe-mode"	# Don't use extensions [RJB: not now]
#FFARGS="$FFARGS --sync"	# Use synchronous "X" error reporting (CPU intensive?)
FFARGS="$FFARGS -P "Bugs" -no-remote"

# Other mozilla environment setable options
#export MOZ_PLUGIN_PATH=${MOZ_PLUGIN_PATH:-/usr/lib/nsbrowser/plugins}
export MOZ_PLUGIN_PATH=$FIREFOXDIR/plugins

export MOZ_DISABLE_IMAGE_OPTIMIZE=1	# don't try to optimize images
export MOZ_DISABLE_PANGO=1		# faster startup if we avoid pango libraries
					# But it still loads them?
					# unsure if disables certain foreign charsets...

# Mozilla "NetScape Portable Runtime" tracing
#export NSPR_LOG_MODULES=Widget:2,all:5
#export NSPR_LOG_MODULES=Widget:4
#export NSPR_LOG_FILE=$XRE_PROFILE_PATH/nsprlog.txt

##############################################################################
# setLDvar function - set and export LD_* variables before execing program
function setLDvar {
  # Preloaded shared libraries - to avoid LD_LIBRARY_PATH order...
  # export LD_PRELOAD=/usr/local/lib/firefox-1.5.0.4/libxpcom_core.so

  # Hack to resolve library load searching problem!!! RJB 081209
  # Prob 1: /usr/local/lib/firefox-3.0.6pre/firefox-bin: symbol lookup error: /opt/libdbg/libgtk-x11-2.0.so.0: undefined symbol: _nss_files_getaliasent_r
  # Prob 2: /usr/local/lib/firefox-3.0.6pre/firefox-bin: symbol lookup error: /opt/libdbg/libgtk-x11-2.0.so.0: undefined symbol: _nss_dns_gethostbyaddr_r

#  export LD_PRELOAD=/usr/local/lib/libnss_files.so.2Lw
#  -rwxr-xr-x 1 root root 159038 Apr 20  2008 /usr/local/lib/libnss_files-2.7.so
#  lrwxrwxrwx 1 root root     17 Apr 20  2008 /usr/local/lib/libnss_files.so -> libnss_files.so.2
#  lrwxrwxrwx 1 root root     19 Apr 20  2008 /usr/local/lib/libnss_files.so.2 -> libnss_files-2.7.so
#  gives ERROR: ld.so: object '/usr/local/lib/libnss_files.so.2Lw' from LD_PRELOAD cannot be preloaded: ignored.

  # Hack fix: preload libraries required...
  ##export LD_PRELOAD=/lib/libnss_dns-2.8.so:/lib/libnss_files-2.8.so
  ## The following line causes segfault in loading the libraries ???
  ##export LD_PRELOAD=/opt/libdbg/libnss_dns-2.8.so:/opt/libdbg/libnss_files-2.8.so
  ##export LD_PRELOAD=/lib/libnss_dns-2.9.so:/lib/libnss_files-2.9.so
  
  # Shared library loading tracing -- impacts output in LD_DEBUG_OUTPUT file
  #export LD_DEBUG=all			# everything
  #export LD_DEBUG=libs,files,versions,reloc,bindings	# everything but symbols
  #LD_DEBUG=libs,files,versions	# not all or reloc|bindings
  #LD_DEBUG_OUTPUT=$XRE_PROFILE_PATH/ldshl.log
  
  unset LD_LIBRARY_PATH
  LD_LIBRARY_PATH=$FIREFOXDIR	# Start with libraries "with" firefox
  
#  #if one wants debugging SYSDBGLIBDIR *must* come before /lib and /usr/lib
#  if test "$LIBDBG" = 1; then LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$SYSDBGLIBDIR; fi
#  # LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$SYSDBGLIBDIR
#
#  # Now add /lib and /usr/bin if not present
#  LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/lib:/usr/lib
#
#  if test -d /usr/lib/nspr	# Add NSPR libs (if not in $FIREFOXDIR or $SYSDBGLIBDIR)
#  then LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/nspr; fi
#
#  if test -d /usr/lib/nss	# Add NSS libs (if not in $FIREFOXDIR or $SYSDBGLIBDIR)
#  then LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/nss; fi
#  # Now, very important, add any other directories for "debug" libraries, glib, gdk, etc.
#
#  
#  # Add "standard" system libraries to shared library search path (added earlier!)
#  # LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib:/lib
  
  # export load library information
  export LD_LIBRARY_PATH LD_DEBUG LD_DEBUG_OUTPUT
}
##############################################################################

# This is needed for: libjemalloc.so
unset LD_LIBRARY_PATH

##############################################################################
# Got burnt several times for not having large enough core dump limit. 
# Prevent limits on core dump sizes!!!
# Required to prevent gdb from complaining about unrecognized core files
#   when core file size is truncated...
# Kernel & GDB should recognize alternate core file with stack before data...

#COREDIR=/root3/tmp/CORES		# Place with enough space for core dumps
#COREDIR=/bck/CORES		# Place with enough space for core dumps
#COREDIR=/bck2/tmp/CORES		# Place with enough space for core dumps
COREDIR=/media/tmp			# Should have lots of space...
if test ! -w $COREDIR
then echo "core directory $COREDIR is not writable"; exit 1
fi
if ! cd $COREDIR
then echo "Could not change to directory $COREDIR"; exit 1; fi

CORELIMIT=3000000		# 3GB (3000MB) core file allowed
COREREQSZ=$CORELIMIT
# may need to adjust to allow for CD size (750MB) addition < $CORELIMIT*1000
#COREREQSZ=`expr $COREREQSZ + 750000`

FREESPACE=`df -k $COREDIR | sed -n '$s/[^ ]* *[^ ]* *[^ ]* *\([^ ]*\).*/\1/p'`
echo "Req: $COREREQSZ Avail: $FREESPACE"
if test $COREREQSZ -gt $FREESPACE
then
    echo "Required core file size $COREREQSZ is less than space available $FREESPACE"
    echo "Free some space on the $COREDIR drive"
    exit 1
fi
if ! ulimit -Sc $CORELIMIT		# xMB core file allowance
then
    echo "Core file size ulimit could not be set to $CORELIMIT"
    exit 1
fi

#echo "FFDBG=$FFDBG LIBDBG=$LIBDBG FFARGS=$FFARGS"; exit

if test "$FFDBG" = "1" -o "$DEBUG" = "1"
then
     echo "XRE_PROFILE_PATH=$XRE_PROFILE_PATH"
     echo "FIREFOX=$FIREFOX"
     echo "To start firefox in gdb: run $FFARGS"
     gdb $FIREFOX 2>&1 | tee $CURDIR/firefox.dbg
	# &1 | tee firefox.dbg
else
    # Now, print information about the "final" firefox execution (before setting LD_*)
    ls -l $FIREFOX
    echo "XRE_PROFILE_PATH=$XRE_PROFILE_PATH"

    setLDvar	# set LD_* variables
    #export LD_LIBRARY_PATH=$FIREFOXDIR:/opt/libdbg
    #echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH"
    # set; exit 1		# uncomment if you want to see environment variables

    GDBCMDS=$CURDIR/gdbcmds.$$
    echo > $GDBCMDS "
    # no messages regarding library loading
    set verbose off
    # Answer "y" to questions to allow breakpoint setting in shared libraries
    # set confirm on -- doesn't work?
    # log the output to gdb.trc
    set logging file gdb.trc.$$
    set logging on
    # set program program arguments
    set args $FFARGS
    # handle interrupt processing
    handle SIGHUP  print
    handle SIGTERM print
    handle SIGPIPE nostop print pass
    handle SIGALRM stop print nopass
    break main
    # printf "Running program\n"
    run
    # Debug Gtk/Gdk/Glib error locations
    # glib breakpoints need to be set after glib shared library loaded
    # break g_logv
    # commands
    # backtrace
    # info reg
    # end
    # info break
    # continue
"

    echo "Firefox args: $FFARGS"
    gdb -x $GDBCMDS $FIREFOX 2>&1 | tee $CURDIR/firefox.trc

    # $FIREFOX $FFARGS >firefox.trc 2>&1
    # Really want to run Firefox in background, wait 10-20 minutes for restart to
    # complete, then run "gdb $FIREFOX $!"
    STATUS=$?
    echo "Firefox exit status: $STATUS"
    echo "Curdir = " `pwd`
fi