#!/bin/bash

# This file is part of util-linux.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This file is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

TS_TOPDIR="${0%/*}/../.."
TS_DESC="decode functions"

. "$TS_TOPDIR/functions.sh"
ts_init "$*"

ts_skip_qemu_user

ts_check_test_command "$TS_CMD_KILL"
ts_check_test_command "$TS_HELPER_SIGSTATE"

. "$TS_SELF/kill_functions.sh"

decode()
{
    echo decode "\"$1\":"
    "$TS_CMD_KILL" -l "$1"
}

PID=
ACK=
{
    for d in 0x00000000000044aa \
		 0x0000000000003015 \
		 0x0000000000000200; do
	decode "$d"
    done

    coproc SIGSTATE { "$TS_HELPER_SIGSTATE" ; }
    if read -u ${SIGSTATE[0]} PID; then
	"$TS_CMD_KILL" -USR1 "$PID"
	if read -u ${SIGSTATE[0]} ACK; then
	    # The taget process is in its signal handler for USR1.
	    # Sending one more USR1 is for making the signal pending state.
	    "$TS_CMD_KILL" -USR1 "$PID"
	    "$TS_CMD_KILL" -d "$PID" | {
		if [[ $("$TS_CMD_KILL" --list=34) == RT0 ]]; then
		    # See man signal(7).
		    #   The  Linux  kernel  supports a range of 33 different real-time signals,
		    #   numbered 32 to 64.  However, the glibc POSIX threads implementation in‐
		    #   ternally uses two (for NPTL) or three (for LinuxThreads) real-time sig‐
		    #   nals (see pthreads(7)), and adjusts the value of SIGRTMIN suitably  (to
		    #   34 or 35).
		    sed -e s/' 32 33'// -e s/' 34'//
		else
		    cat
		fi
	    }
	fi
	echo DONE >&"${SIGSTATE[1]}"
    fi
    wait ${SIGSTATE_PID}
} > "$TS_OUTPUT" 2>&1

ts_finalize