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90cc41de32
Join the new session keyring when the server starts rather than once the configuration file has been loaded, and control it at build time with --enable-keyring, on by default if linux/keyctl.h is found. Rename keyring_join and keyring_revoke to new_session_keyring and revoke_session_keyring.
72 lines
1.9 KiB
Bash
72 lines
1.9 KiB
Bash
#!/bin/sh
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# On Linux the server should join a session keyring of its own, so it keeps
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# working after the login session's keyring is revoked, and revoke it when it
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# exits.
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PATH=/bin:/usr/bin
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TERM=screen
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[ "$(uname)" = Linux ] || exit 0
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keyctl session - true >/dev/null 2>&1 || exit 0
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[ -z "$TEST_TMUX" ] && TEST_TMUX=$(readlink -f ../tmux)
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OUT=$(mktemp -d)
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TMUX="$TEST_TMUX -Ltest$$ -f/dev/null"
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$TMUX kill-server 2>/dev/null
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fail()
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{
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echo "$*"
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exit 1
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}
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cleanup()
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{
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$TMUX kill-server 2>/dev/null
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[ -s $OUT/holder ] && kill $(cat $OUT/holder) 2>/dev/null
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rm -rf "$OUT"
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}
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trap cleanup 0 1 15
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# Start the server from a login session with its own keyring, then revoke that
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# keyring as pam_keyinit(8) does when the login session ends.
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LOGIN=$(keyctl session - sh -c "
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$TMUX new -d 'sleep 1000' && keyctl id @s && keyctl revoke @s
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" 2>/dev/null) || fail "could not start server"
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# A new pane should still have a usable keyring, with the user keyring linked.
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$TMUX new-window -d "keyctl id @s >$OUT/pane 2>&1; $TMUX wait-for -S pane" ||
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fail "could not create pane"
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$TMUX wait-for pane
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KEYRING=$(cat $OUT/pane)
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case "$KEYRING" in
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''|*[!0-9]*)
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fail "pane keyring not usable: $KEYRING"
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;;
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esac
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[ "$KEYRING" != "$LOGIN" ] || fail "pane has the login keyring"
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keyctl rlist $KEYRING | grep -qw "$(keyctl id @u)" ||
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fail "user keyring not linked"
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# The server should revoke its keyring when it exits, even while a process it
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# started (which ignores the SIGHUP from its pane closing) still holds it.
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$TMUX new-window -d "
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trap '' HUP
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echo \$\$ >$OUT/holder
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$TMUX wait-for -S held
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exec sleep 100
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" || fail "could not create pane"
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$TMUX wait-for held
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SERVER=$($TMUX display -p '#{pid}')
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$TMUX kill-server
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n=0
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while kill -0 $SERVER 2>/dev/null && [ $n -lt 50 ]; do
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sleep 0.1
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n=$((n + 1))
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done
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keyctl rdescribe $KEYRING >$OUT/exit 2>&1
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grep -q "revoked" $OUT/exit || fail "keyring not revoked: $(cat $OUT/exit)"
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exit 0
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