#!/bin/bash
#
# Copyright (C) 2023 Masatake YAMATO <yamato@redhat.com>
#
# 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="inotify"

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

ts_check_test_command "$TS_CMD_LSFD"
ts_check_test_command "$TS_CMD_FINDMNT"
ts_check_prog "stat"
ts_check_prog "sed"

ts_cd "$TS_OUTDIR"

PID=
FD=3
dir=/proc
file=/proc/cmdline
PROC="$(stat -c %i $dir)"@"$($TS_CMD_FINDMNT --raw --noheadings -oMAJ:MIN --target $dir)"
CMDLINE="$(stat -c %i $file)"@"$($TS_CMD_FINDMNT --raw --noheadings -oMAJ:MIN --target $file)"
{
    coproc MKFDS { "$TS_HELPER_MKFDS" inotify $FD dir=$dir file=$file ; }
    if read -u ${MKFDS[0]} PID; then
	EXPR='(PID == '"${PID}"') and (FD == '"$FD"')'
	INODES_RAW=$(${TS_CMD_LSFD} --raw -n -o INOTIFY.INODES.RAW -Q "${EXPR}")
	echo "INOTIFY.INODES.RAW": $?
	if [[ "$INODES_RAW" ==  "${CMDLINE}"'\x0a'"${PROC}" ]]; then
	    echo "INOTIFY.INODES.RAW" == CMDLINE'\x0a'PROC
	else
	    echo "INOTIFY.INODES.RAW": "$INODES_RAW"
	    echo "CMDLINE": "$CMDLINE"
	    echo "PROC": "$PROC"
	fi
	INODES_RAW_JSON=$(${TS_CMD_LSFD} -J --raw -n -o INOTIFY.INODES.RAW -Q "${EXPR}")
	echo "INOTIFY.INODES.RAW (JSON)": $?
	EXPECTED_JSON=$(cat<<EOF
{
   "lsfd": [
      {
         "inotify.inodes.raw": [
             "$CMDLINE", "$PROC"
         ]
      }
   ]
}
EOF
	)
	if [[ "$INODES_RAW_JSON" ==  "${EXPECTED_JSON}" ]]; then
	    echo "INOTIFY.INODES.RAW" == EXPECTED_JSON
	else
	    echo "INOTIFY.INODES.RAW": "$INODES_RAW_JSON"
	fi

	echo DONE >&"${MKFDS[1]}"
    fi
    wait "${MKFDS_PID}"
} > "$TS_OUTPUT" 2>&1

ts_finalize