examples/scripts/debugging/linux/backtrace

   1 #! /bin/sh
   2 #
   3 # Author: Andrew Tridgell <tridge at samba dot org>
   4
   5 # we want everything on stderr, so the program is not disturbed
   6 exec 1>&2
   7
   8 BASENAME=$(basename $0)
   9
  10 test -z ${GDB_BIN} && GDB_BIN=$(type -p gdb)
  11 if [ -z ${GDB_BIN} ]; then
  12         echo "ERROR: ${BASENAME} needs an installed gdb. "
  13         exit 1
  14 fi
  15
  16 if [ -z $1 ]; then
  17         echo "ERROR: ${BASENAME} needs a PID. "
  18         exit 1
  19 fi
  20 PID=$1
  21
  22 # use /dev/shm as default temp directory
  23 test -d /dev/shm &&
  24         TMP_BASE_DIR=/dev/shm ||
  25         TMP_BASE_DIR=/var/tmp
  26 TMPFILE=$(mktemp -p ${TMP_BASE_DIR} backtrace.XXXXXX)
  27 if [ $? -ne 0 ]; then
  28         echo "ERROR: ${basename} can't create temp file in ${TMP_BASE_DIR}. "
  29         exit 1
  30 fi
  31
  32 cat <<EOF >"${TMPFILE}"
  33 set height 0
  34 up 8
  35 bt full
  36 quit
  37 EOF
  38
  39 ${GDB_BIN} -x "${TMPFILE}" "/proc/${PID}/exe" "${PID}"
  40
  41 /bin/rm -f "${TMPFILE}"