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|
#!/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 "$*"
# make sure we do not use shell built-in command
if [ "$TS_USE_SYSTEM_COMMANDS" == "yes" ]; then
TS_CMD_KILL="$(which kill)"
fi
ts_skip_qemu_user
ts_check_test_command "$TS_CMD_KILL"
ts_check_test_command "$TS_HELPER_SIGSTATE"
ts_check_prog "sed"
ts_check_prog "sort"
ts_check_prog "tr"
. "$TS_SELF/kill_functions.sh"
decode()
{
"$TS_CMD_KILL" -l "$1"
}
signame2num()
{
local name=$1
local n s
"$TS_CMD_KILL" -L | while read n s; do
if [[ "$s" == "$name" ]]; then
echo "$n"
return 0
fi
done
return 1
}
encode()
{
local s
local n
local -i bits=0
for s in "$@"; do
n=$(signame2num "$s")
if [[ -z "$n" ]]; then
ts_log_both "failed to encode the signal name: $s"
# The test may fail.
continue
fi
(( bits |= 1 << (n - 1) ))
done
printf "0x%0.16x\n" "$bits"
}
sort_signals_by_name()
{
local field
local siglist
while IFS=: read field siglist; do
echo "${field}:"
echo $siglist | tr ' ' '\n' | sort
done
}
PID=
ACK=
{
for siglist in "INT ILL ABRT FPE SEGV TERM" \
"HUP QUIT TRAP PIPE ALRM" \
"USR1"; do
printf 'encode-decode round-trip "%s":\n' "${siglist}"
d=$(encode ${siglist})
decode "$d"
done
coproc SIGSTATE { "$TS_HELPER_SIGSTATE" ; }
if read -u ${SIGSTATE[0]} PID; then
"$TS_CMD_KILL" -USR1 "$PID"
if read -u ${SIGSTATE[0]} ACK; then
# The target process is in its signal handler for USR1.
# Sending one more USR1 is for making the signal pending state.
"$TS_CMD_KILL" -USR1 "$PID"
"$TS_CMD_KILL" -d "$PID" | {
SIGRTMIN=$("$TS_CMD_KILL" -L | grep -o '[0-9]\+ RTMIN' | cut -d " " -f 1)
if [[ $("$TS_CMD_KILL" --list=$SIGRTMIN) == 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_cmd="sed"
for ((i=32; i<=SIGRTMIN; i++)); do
sed_cmd+=" -e s/' $i'//"
done
eval $sed_cmd
else
cat
fi
} | sort_signals_by_name
fi
echo DONE >&"${SIGSTATE[1]}"
fi
wait ${SIGSTATE_PID}
} > "$TS_OUTPUT" 2>&1
ts_finalize
|
