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From 356247b0fb704e62bf378a7940a8190677358daa Mon Sep 17 00:00:00 2001
From: Frantisek Sumsal <frantisek@sumsal.cz>
Date: Thu, 27 Apr 2023 23:17:52 +0200
Subject: [PATCH] test: add a couple of tests for systemd-pstore
(cherry picked from commit 6858e32d730fd5574eaa3d7fbf4cb12aacaea336)
Related: #2170883
---
test/units/testsuite-74.pstore.sh | 221 ++++++++++++++++++++++++++++++
1 file changed, 221 insertions(+)
create mode 100755 test/units/testsuite-74.pstore.sh
diff --git a/test/units/testsuite-74.pstore.sh b/test/units/testsuite-74.pstore.sh
new file mode 100755
index 0000000000..b4e442c1be
--- /dev/null
+++ b/test/units/testsuite-74.pstore.sh
@@ -0,0 +1,221 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -eux
+set -o pipefail
+
+systemctl log-level info
+
+if systemd-detect-virt -cq; then
+ echo "Running in a container, skipping the systemd-pstore test..."
+ exit 0
+fi
+
+DUMMY_DMESG_1="$(mktemp)"
+cat >"$DUMMY_DMESG_1" <<\EOF
+6,17159,5340096332127,-;usb 1-4: USB disconnect, device number 124
+6,17160,5340109662397,-;input: WH-1000XM3 (AVRCP) as /devices/virtual/input/input293
+6,17161,5343126458360,-;loop0: detected capacity change from 0 to 3145728
+6,17162,5343126766065,-; loop0: p1 p2
+6,17163,5343126815038,-;EXT4-fs (loop0p1): mounted filesystem with ordered data mode. Quota mode: none.
+6,17164,5343158037334,-;EXT4-fs (loop0p1): unmounting filesystem.
+6,17165,5343158072598,-;loop0: detected capacity change from 0 to 3145728
+6,17166,5343158073563,-; loop0: p1 p2
+6,17167,5343158074325,-; loop0: p1 p2
+6,17168,5343158140859,-;EXT4-fs (loop0p1): mounted filesystem with ordered data mode. Quota mode: none.
+6,17169,5343158182977,-;EXT4-fs (loop0p1): unmounting filesystem.
+6,17170,5343158700241,-;loop0: detected capacity change from 0 to 3145728
+6,17171,5343158700439,-; loop0: p1 p2
+6,17172,5343158701120,-; loop0: p1 p2
+EOF
+
+DUMMY_DMESG_2="$(mktemp)"
+cat >"$DUMMY_DMESG_2" <<\EOF
+Nechť již hříšné saxofony ďáblů rozezvučí síň úděsnými tóny waltzu, tanga a quickstepu.
+Příliš žluťoučký kůň úpěl ďábelské ódy.
+Zvlášť zákeřný učeň s ďolíčky běží podél zóny úlů.
+Vyciď křišťálový nůž, ó učiň úděsné líbivým!
+Loď čeří kýlem tůň obzvlášť v Grónské úžině
+Ó, náhlý déšť již zvířil prach a čilá laň teď běží s houfcem gazel k úkrytům.
+Vypätá dcéra grófa Maxwella s IQ nižším ako kôň núti čeľaď hrýzť hŕbu jabĺk.
+Kŕdeľ šťastných ďatľov učí pri ústí Váhu mĺkveho koňa obhrýzať kôru a žrať čerstvé mäso.
+Stróż pchnął kość w quiz gędźb vel fax myjń.
+Portez ce vieux whisky au juge blond qui fume!
+EOF
+
+file_count() { find "${1:?}" -type f | wc -l; }
+file_size() { wc -l <"${1:?}"; }
+random_efi_timestamp() { printf "%0.10d" "$((1000000000 + RANDOM))"; }
+
+# The dmesg- filename contains the backend-type and the Common Platform Error Record, CPER,
+# record id, a 64-bit number.
+#
+# Files are processed in reverse lexigraphical order so as to properly reconstruct original dmesg.
+
+prepare_efi_logs() {
+ local file="${1:?}"
+ local timestamp="${2:?}"
+ local chunk count filename
+
+ # For the EFI backend, the 3 least significant digits of record id encodes a
+ # "count" number, the next 2 least significant digits for the dmesg part
+ # (chunk) number, and the remaining digits as the timestamp. See
+ # linux/drivers/firmware/efi/efi-pstore.c in efi_pstore_write().
+ count="$(file_size "$file")"
+ chunk=0
+ # The sed in the process substitution below just reverses the file
+ while read -r line; do
+ filename="$(printf "dmesg-efi-%0.10d%0.2d%0.3d" "$timestamp" "$chunk" "$count")"
+ echo "$line" >"/sys/fs/pstore/$filename"
+ chunk=$((chunk + 1))
+ done < <(sed '1!G;h;$!d' "$file")
+
+ if [[ "$chunk" -eq 0 ]]; then
+ echo >&2 "No dmesg-efi files were created"
+ exit 1
+ fi
+}
+
+prepare_erst_logs() {
+ local file="${1:?}"
+ local start_id="${2:?}"
+ local id filename
+
+ # For the ERST backend, the record is a monotonically increasing number, seeded as
+ # a timestamp. See linux/drivers/acpi/apei/erst.c in erst_writer().
+ id="$start_id"
+ # The sed in the process substitution below just reverses the file
+ while read -r line; do
+ filename="$(printf "dmesg-erst-%0.16d" "$id")"
+ echo "$line" >"/sys/fs/pstore/$filename"
+ id=$((id + 1))
+ done < <(sed '1!G;h;$!d' "$file")
+
+ if [[ "$id" -eq "$start_id" ]]; then
+ echo >&2 "No dmesg-erst files were created"
+ exit 1
+ fi
+
+ # ID of the last dmesg file will be the ID of the erst subfolder
+ echo "$((id - 1))"
+}
+
+prepare_pstore_config() {
+ local storage="${1:?}"
+ local unlink="${2:?}"
+
+ systemctl stop systemd-pstore
+
+ rm -fr /sys/fs/pstore/* /var/lib/systemd/pstore/*
+
+ mkdir -p /run/systemd/pstore.conf.d
+ cat >"/run/systemd/pstore.conf.d/99-test.conf" <<EOF
+[PStore]
+Storage=$storage
+Unlink=$unlink
+EOF
+
+ systemd-analyze cat-config systemd/pstore.conf | grep "$storage"
+ systemd-analyze cat-config systemd/pstore.conf | grep "$unlink"
+}
+
+start_pstore() {
+ rm -f /tmp/journal.cursor
+ journalctl -q -n 0 --cursor-file=/tmp/journal.cursor
+ systemctl start systemd-pstore
+ journalctl --sync
+}
+
+# To avoid having to depend on the VM providing the pstore, let's simulate
+# it using a simple bind mount
+PSTORE_DIR="$(mktemp -d)"
+mount --bind "${PSTORE_DIR:?}" "/sys/fs/pstore"
+
+# systemd-pstore is a no-op with Storage=none
+for unlink in yes no; do
+ : "Backend: N/A; Storage: none; Unlink: $unlink"
+ timestamp="$(random_efi_timestamp)"
+ prepare_pstore_config "none" "$unlink"
+ prepare_efi_logs "$DUMMY_DMESG_1" "$timestamp"
+ old_count="$(file_count /sys/fs/pstore/)"
+ start_pstore
+ [[ "$(file_count /sys/fs/pstore)" -ge "$old_count" ]]
+ [[ "$(file_count /var/lib/systemd/pstore/)" -eq 0 ]]
+
+ : "Backend: EFI; Storage: external; Unlink: $unlink"
+ timestamp="$(random_efi_timestamp)"
+ prepare_pstore_config "external" "$unlink"
+ prepare_efi_logs "$DUMMY_DMESG_1" "$timestamp"
+ [[ "$unlink" == yes ]] && exp_count=0 || exp_count="$(file_count /sys/fs/pstore/)"
+ start_pstore
+ [[ "$(file_count /sys/fs/pstore)" -ge "$exp_count" ]]
+ [[ "$(file_count /var/lib/systemd/pstore/)" -ne 0 ]]
+ # We always log to journal
+ diff "$DUMMY_DMESG_1" <(journalctl -o cat -u systemd-pstore --output-fields=FILE --cursor-file=/tmp/journal.cursor | sed "/^$/d")
+ filename="$(printf "/var/lib/systemd/pstore/%s/%0.3d/dmesg.txt" "$timestamp" "$(file_size "$DUMMY_DMESG_1")")"
+ diff "$DUMMY_DMESG_1" "$filename"
+
+ : "Backend: EFI; Storage: external; Unlink: $unlink; multiple dmesg files"
+ timestamp_1="$(random_efi_timestamp)"
+ timestamp_2="$((timestamp_1 + 1))"
+ prepare_pstore_config "external" "$unlink"
+ prepare_efi_logs "$DUMMY_DMESG_1" "$timestamp_1"
+ prepare_efi_logs "$DUMMY_DMESG_2" "$timestamp_2"
+ # Add one "random" (non-dmesg) file as well
+ echo "hello world" >/sys/fs/pstore/foo.bar
+ [[ "$unlink" == yes ]] && exp_count=0 || exp_count="$(file_count /sys/fs/pstore/)"
+ start_pstore
+ [[ "$(file_count /sys/fs/pstore)" -ge "$exp_count" ]]
+ [[ "$(file_count /var/lib/systemd/pstore/)" -ne 0 ]]
+ filename_1="$(printf "/var/lib/systemd/pstore/%s/%0.3d/dmesg.txt" "$timestamp_1" "$(file_size "$DUMMY_DMESG_1")")"
+ diff "$DUMMY_DMESG_1" "$filename_1"
+ filename_2="$(printf "/var/lib/systemd/pstore/%s/%0.3d/dmesg.txt" "$timestamp_2" "$(file_size "$DUMMY_DMESG_2")")"
+ diff "$DUMMY_DMESG_2" "$filename_2"
+ grep "hello world" "/var/lib/systemd/pstore/foo.bar"
+
+ : "Backend: EFI; Storage: journal; Unlink: $unlink"
+ timestamp="$(random_efi_timestamp)"
+ prepare_pstore_config "journal" "$unlink"
+ prepare_efi_logs "$DUMMY_DMESG_1" "$timestamp"
+ [[ "$unlink" == yes ]] && exp_count=0 || exp_count="$(file_count /sys/fs/pstore/)"
+ start_pstore
+ [[ "$(file_count /sys/fs/pstore)" -ge "$exp_count" ]]
+ [[ "$(file_count /var/lib/systemd/pstore/)" -eq 0 ]]
+ diff "$DUMMY_DMESG_1" <(journalctl -o cat -u systemd-pstore --output-fields=FILE --cursor-file=/tmp/journal.cursor | sed "/^$/d")
+
+ : "Backend: ERST; Storage: external; Unlink: $unlink"
+ prepare_pstore_config "external" "$unlink"
+ last_id="$(prepare_erst_logs "$DUMMY_DMESG_1" 0)"
+ [[ "$unlink" == yes ]] && exp_count=0 || exp_count="$(file_count /sys/fs/pstore/)"
+ start_pstore
+ [[ "$(file_count /sys/fs/pstore)" -ge "$exp_count" ]]
+ [[ "$(file_count /var/lib/systemd/pstore/)" -ne 0 ]]
+ # We always log to journal
+ diff "$DUMMY_DMESG_1" <(journalctl -o cat -u systemd-pstore --output-fields=FILE --cursor-file=/tmp/journal.cursor | sed "/^$/d")
+ filename="$(printf "/var/lib/systemd/pstore/%0.16d/dmesg.txt" "$last_id")"
+ diff "$DUMMY_DMESG_1" "$filename"
+
+ : "Backend: ERST; Storage: external; Unlink: $unlink; multiple dmesg files"
+ prepare_pstore_config "external" "$unlink"
+ last_id_1="$(prepare_erst_logs "$DUMMY_DMESG_1" 0)"
+ last_id_2="$(prepare_erst_logs "$DUMMY_DMESG_2" "$((last_id_1 + 10))")"
+ # Add one "random" (non-dmesg) file as well
+ echo "hello world" >/sys/fs/pstore/foo.bar
+ [[ "$unlink" == yes ]] && exp_count=0 || exp_count="$(file_count /sys/fs/pstore/)"
+ start_pstore
+ [[ "$(file_count /sys/fs/pstore)" -ge "$exp_count" ]]
+ [[ "$(file_count /var/lib/systemd/pstore/)" -ne 0 ]]
+ filename_1="$(printf "/var/lib/systemd/pstore/%0.16d/dmesg.txt" "$last_id_1")"
+ diff "$DUMMY_DMESG_1" "$filename_1"
+ filename_2="$(printf "/var/lib/systemd/pstore/%0.16d/dmesg.txt" "$last_id_2")"
+ diff "$DUMMY_DMESG_2" "$filename_2"
+ grep "hello world" "/var/lib/systemd/pstore/foo.bar"
+
+ : "Backend: ERST; Storage: journal; Unlink: $unlink"
+ prepare_pstore_config "journal" "$unlink"
+ last_id="$(prepare_erst_logs "$DUMMY_DMESG_1" 0)"
+ [[ "$unlink" == yes ]] && exp_count=0 || exp_count="$(file_count /sys/fs/pstore/)"
+ start_pstore
+ [[ "$(file_count /sys/fs/pstore)" -ge "$exp_count" ]]
+ [[ "$(file_count /var/lib/systemd/pstore/)" -eq 0 ]]
+ diff "$DUMMY_DMESG_1" <(journalctl -o cat -u systemd-pstore --output-fields=FILE --cursor-file=/tmp/journal.cursor | sed "/^$/d")
+done
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