77 lines
1.7 KiB
Bash
Executable file
77 lines
1.7 KiB
Bash
Executable file
#!/bin/bash
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#
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# Copyright (C) 2024 Masatake YAMATO <yamato@redhat.com>
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#
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# This file is part of util-linux.
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#
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# This file is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This file is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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TS_TOPDIR="${0%/*}/../.."
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TS_DESC="fd opening a file cannot be stat(2)'ed"
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. "$TS_TOPDIR"/functions.sh
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ts_init "$*"
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ts_check_test_command "$TS_CMD_LSFD"
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ts_check_test_command "$TS_HELPER_MKFDS"
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ts_check_test_command "$TS_CMD_SETPRIV"
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ts_check_prog "chmod"
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ts_check_prog "dd"
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ts_check_prog "id"
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ts_check_prog "mkdir"
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ts_check_prog "rm"
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ts_check_prog "rmdir"
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ts_cd "$TS_OUTDIR"
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pid=$$
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DIR=d"$pid"
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FILE=${DIR}/f"$pid"
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if ! mkdir -p "$DIR"; then
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ts_die "error in mkdir"
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fi
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if ! dd if=/dev/zero of="$FILE" bs=4096 count=1 status=none; then
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rmdir "$DIR"
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ts_die "error in dd"
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fi
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LAUNCHER=
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if [ "$(id -u)" = 0 ]; then
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chown -R 1 $DIR
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LAUNCHER="$TS_CMD_SETPRIV --reuid=1"
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LSFD_XOPT="--_drop-privilege"
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fi
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PID=
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EXPR=
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{
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coproc MKFDS { $LAUNCHER "$TS_HELPER_MKFDS" mmap file="$FILE"; }
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if read -u ${MKFDS[0]} PID; then
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chmod u-rwx "$DIR"
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EXPR='(ASSOC == "mem") and (NAME =~ ".*/'"$FILE"'$")'
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${TS_CMD_LSFD} ${LSFD_XOPT} -p "$PID" -n -o ASSOC,TYPE,SOURCE -Q "$EXPR"
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echo "ASSOC,TYPE,SOURCE: " $?
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chmod u+rwx "$DIR"
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rm "$FILE"
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rmdir "$DIR"
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echo DONE >&"${MKFDS[1]}"
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fi
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} > "$TS_OUTPUT" 2>&1
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wait "${MKFDS_PID}"
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ts_finalize
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