58 lines
2.5 KiB
Diff
58 lines
2.5 KiB
Diff
From a346aae4bee8f53354fa001141057a1c88743ef3 Mon Sep 17 00:00:00 2001
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From: Lars Ellenberg <lars.ellenberg@linbit.com>
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Date: Tue, 26 Mar 2024 17:43:14 +0100
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Subject: [PATCH] nfsserver: fix "server scope" functionality for both
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potentially other dropins AND multiple ExecStart
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986ebe18 (nfsserver: Fix NFSv4 lock failover: set NFS Server Scope (#1688), 2021-10-13)
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Prefixes all `ExecStart=.*` with an unshare --uts.
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It did not expect an existing "empty, resetting" `ExecStart=`, though,
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and changed that as well. The attempt to fix that with
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806e3fe9 (nfsserver: fix "server scope" functionality to live with additional drop-in files, 2023-02-15)
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it wrong though: it only fixes the _last_ ExecStart found (`|tail -1`).
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There may be more than one ExecStart (even though arguable some of them should be ExecStartPost).
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Without the "only last line", it would be a valid fix,
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though it would unnecessarily list irrelevant ExecStart lines as well.
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My attempt to fix the fix:
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Find the set of `ExecStart=...` lines after the last reset (`ExecStart=`), if any.
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Edit in the "unshare uts" prefix into all of those lines.
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(we could also patch only the line containing rpc.nfsd,
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but I'm sure some distro will find creative ways to break our assumptions again)
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---
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heartbeat/nfsserver | 13 +++++++++++--
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1 file changed, 11 insertions(+), 2 deletions(-)
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diff --git a/heartbeat/nfsserver b/heartbeat/nfsserver
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index 8838195a..5793d7a7 100755
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--- a/heartbeat/nfsserver
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+++ b/heartbeat/nfsserver
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@@ -711,8 +711,17 @@ inject_unshare_uts_name_into_systemd_units ()
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test -d "$dir" || mkdir -p "$dir"
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test -e "$dropin" && rm -f "$dropin"
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- # NOTE: additional ExecStart= might exist in the drop-in files, eg. openSUSE
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- edited_exec_start=$(systemctl cat $svc | sed -ne "s#^ExecStart=\\([-+:!@]*\\)\\(.\+\\)#ExecStart=\\1/usr/bin/unshare --uts /bin/sh -c 'hostname \${NFS_SERVER_SCOPE}; exec \"\$@\"' -- \\2#p" | tail -1)
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+ # NOTE: multiple ExecStart may exist,
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+ # even additional `ExecStart=` to reset the list might exist in the drop-in files.
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+ # We are interested in only the "currently relevant" set of ExecStart.
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+ local unshare_uts_set_hostname='/usr/bin/unshare --uts /bin/sh -c '\''hostname ${NFS_SERVER_SCOPE}; exec "$@"'\'' -- '
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+ edited_exec_start=$(systemctl cat $svc \
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+ | sed -n \
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+ -e '/^ExecStart=/ H;' \
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+ -e '/^ExecStart=[[:space:]]*$/ {s/.*//;h};' \
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+ -e '${g;s/^\n//;p}' \
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+ | sed -e 's#^\(ExecStart=[-+:!@]*\)\(.\+\)#\1'"$unshare_uts_set_hostname"'\2#'
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+ )
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cat > "$dropin" <<___
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[Service]
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--
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2.25.1
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