1
0
mirror of https://github.com/systemd/systemd.git synced 2024-10-31 07:51:21 +03:00
systemd/test/TEST-04-JOURNAL/test-journal.sh
Lorenz Bauer 09d0b46ab6 journal: refresh cached credentials of stdout streams
journald assumes that getsockopt(SO_PEERCRED) correctly identifies the
process on the remote end of the socket. However, this is incorrect
according to man 7 socket:

    The returned  credentials  are  those that were in effect at the
    time of the call to connect(2) or socketpair(2).

This becomes a problem when a new process inherits the stdout stream
from a parent. First, log messages from the child process will
be attributed to the parent. Second, the struct ucred used by journald
becomes invalid as soon as the parent exits. Further sendmsg calls then
fail with ENOENT. Logs for the child process then vanish from the journal.

Fix this by using recvmsg on the stdout stream, and refreshing the cached
struct ucred if SCM_CREDENTIALS indicate a new process.

Fixes #13708
2019-11-05 10:41:03 +01:00

110 lines
3.2 KiB
Bash
Executable File

#!/bin/bash
set -x
set -e
set -o pipefail
# Test stdout stream
# Skip empty lines
ID=$(journalctl --new-id128 | sed -n 2p)
>/expected
printf $'\n\n\n' | systemd-cat -t "$ID" --level-prefix false
journalctl --sync
journalctl -b -o cat -t "$ID" >/output
cmp /expected /output
ID=$(journalctl --new-id128 | sed -n 2p)
>/expected
printf $'<5>\n<6>\n<7>\n' | systemd-cat -t "$ID" --level-prefix true
journalctl --sync
journalctl -b -o cat -t "$ID" >/output
cmp /expected /output
# Remove trailing spaces
ID=$(journalctl --new-id128 | sed -n 2p)
printf "Trailing spaces\n">/expected
printf $'<5>Trailing spaces \t \n' | systemd-cat -t "$ID" --level-prefix true
journalctl --sync
journalctl -b -o cat -t "$ID" >/output
cmp /expected /output
ID=$(journalctl --new-id128 | sed -n 2p)
printf "Trailing spaces\n">/expected
printf $'Trailing spaces \t \n' | systemd-cat -t "$ID" --level-prefix false
journalctl --sync
journalctl -b -o cat -t "$ID" >/output
cmp /expected /output
# Don't remove leading spaces
ID=$(journalctl --new-id128 | sed -n 2p)
printf $' \t Leading spaces\n'>/expected
printf $'<5> \t Leading spaces\n' | systemd-cat -t "$ID" --level-prefix true
journalctl --sync
journalctl -b -o cat -t "$ID" >/output
cmp /expected /output
ID=$(journalctl --new-id128 | sed -n 2p)
printf $' \t Leading spaces\n'>/expected
printf $' \t Leading spaces\n' | systemd-cat -t "$ID" --level-prefix false
journalctl --sync
journalctl -b -o cat -t "$ID" >/output
cmp /expected /output
# --output-fields restricts output
ID=$(journalctl --new-id128 | sed -n 2p)
printf $'foo' | systemd-cat -t "$ID" --level-prefix false
journalctl --sync
journalctl -b -o export --output-fields=MESSAGE,FOO --output-fields=PRIORITY,MESSAGE -t "$ID" >/output
[[ `grep -c . /output` -eq 6 ]]
grep -q '^__CURSOR=' /output
grep -q '^MESSAGE=foo$' /output
grep -q '^PRIORITY=6$' /output
! grep -q '^FOO=' /output
! grep -q '^SYSLOG_FACILITY=' /output
# `-b all` negates earlier use of -b (-b and -m are otherwise exclusive)
journalctl -b -1 -b all -m > /dev/null
# -b always behaves like -b0
journalctl -q -b-1 -b0 | head -1 > /expected
journalctl -q -b-1 -b | head -1 > /output
cmp /expected /output
# ... even when another option follows (both of these should fail due to -m)
{ journalctl -ball -b0 -m 2>&1 || :; } | head -1 > /expected
{ journalctl -ball -b -m 2>&1 || :; } | head -1 > /output
cmp /expected /output
# https://github.com/systemd/systemd/issues/13708
ID=$(systemd-id128 new)
systemd-cat -t "$ID" bash -c 'echo parent; (echo child) & wait' &
PID=$!
wait %%
journalctl --sync
# We can drop this grep when https://github.com/systemd/systemd/issues/13937
# has a fix.
journalctl -b -o export -t "$ID" --output-fields=_PID | grep '^_PID=' >/output
[[ `grep -c . /output` -eq 2 ]]
grep -q "^_PID=$PID" /output
grep -vq "^_PID=$PID" /output
# Add new tests before here, the journald restarts below
# may make tests flappy.
# Don't lose streams on restart
systemctl start forever-print-hola
sleep 3
systemctl restart systemd-journald
sleep 3
systemctl stop forever-print-hola
[[ ! -f "/i-lose-my-logs" ]]
# https://github.com/systemd/systemd/issues/4408
rm -f /i-lose-my-logs
systemctl start forever-print-hola
sleep 3
systemctl kill --signal=SIGKILL systemd-journald
sleep 3
[[ ! -f "/i-lose-my-logs" ]]
touch /testok