mirror of
https://github.com/stefanberger/swtpm.git
synced 2025-08-22 19:04:35 +00:00
024073c5cc
This patch adds support for partial reads to the CUSE swtpm. We introduce a ptm_read_offset variable that holds the offset where to read from next. It is reset every time a command has been processed as part of a write() so that subsequent read()s start reading from offset 0. It is advanced by the number of bytes that were read. Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
152 lines
3.1 KiB
Bash
Executable File
152 lines
3.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# For the license, see the LICENSE file in the root directory.
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# set -x
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cd $(dirname "$0")
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ROOT=${abs_top_builddir:-$(pwd)/..}
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export SWTPM_INTERFACE=cuse
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VTPM_NAME="vtpm-test-tpm2-partial-reads"
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SWTPM_DEV_NAME="/dev/${VTPM_NAME}"
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export TPM_PATH=$(mktemp -d)
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CMD_PATH="${TPM_PATH}/cmd"
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function cleanup()
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{
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pid=${SWTPM_PID}
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if [ -n "$pid" ]; then
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kill_quiet -9 $pid
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fi
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rm -rf $TPM_PATH
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}
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function swtpm_read_n_bytes_fd100()
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{
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dd bs=1 count=$1 if=/proc/self/fd/100 2>/dev/null | \
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od -t x1 -A n | \
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tr -s ' ' | \
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tr -d '\n' | \
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sed 's/ $//g'
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}
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trap "cleanup" EXIT
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[ "${SWTPM_INTERFACE}" == "cuse" ] && source test_cuse
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source common
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run_swtpm ${SWTPM_INTERFACE} --tpm2
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kill_quiet -0 ${SWTPM_PID}
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if [ $? -ne 0 ]; then
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echo "Error: ${SWTPM_INTERFACE} TPM did not start."
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exit 1
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fi
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# Init the TPM
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run_swtpm_ioctl ${SWTPM_INTERFACE} -i
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if [ $? -ne 0 ]; then
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echo "Error: Could not initialize the ${SWTPM_INTERFACE} TPM."
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exit 1
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fi
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kill_quiet -0 ${SWTPM_PID} 2>/dev/null
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if [ $? -ne 0 ]; then
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echo "Error: ${SWTPM_INTERFACE} TPM not running anymore after INIT."
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exit 1
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fi
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# Prepare the TPM2_Startup
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echo -en '\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00' > "${CMD_PATH}"
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swtpm_open_cmddev ${SWTPM_INTERFACE} 100
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# Startup the TPM2
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cat "${CMD_PATH}" >&100
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# Read 4 and then 6 bytes of the response
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res1=$(swtpm_read_n_bytes_fd100 4)
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exp1=' 80 01 00 00'
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if [ "$res1" != "$exp1" ]; then
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echo "1st Startup: Unexpected 1st response part"
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echo "Expected: $exp1"
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echo "Actual : $res1"
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exit 1
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fi
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res2=$(swtpm_read_n_bytes_fd100 6)
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exp2=' 00 0a 00 00 00 00'
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if [ "$res2" != "$exp2" ]; then
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echo "1st Startup: Unexpected 2nd response part"
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echo "Expected: $exp2"
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echo "Actual : $res2"
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exit 1
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fi
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# Startup the TPM2 again (will fail, but that's ok)
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cat "${CMD_PATH}" >&100
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# Read 4 and then only 4 bytes of the response
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res1=$(swtpm_read_n_bytes_fd100 4)
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exp1=' 80 01 00 00'
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if [ "$res1" != "$exp1" ]; then
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echo "2nd Startup: Unexpected 1st response part"
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echo "Expected: $exp1"
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echo "Actual : $res1"
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exit 1
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fi
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res2=$(swtpm_read_n_bytes_fd100 4)
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exp2=' 00 0a 00 00'
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if [ "$res2" != "$exp2" ]; then
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echo "2nd Startup: Unexpected 2nd part"
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echo "Expected: $exp2"
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echo "Actual : $res2"
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exit 1
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fi
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# Startup the TPM2 again (will fail, but that's ok)
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cat "${CMD_PATH}" >&100
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# Read 4 and then 6 bytes of the response
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res1=$(swtpm_read_n_bytes_fd100 4)
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exp1=' 80 01 00 00'
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if [ "$res1" != "$exp1" ]; then
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echo "3rd Startup: Unexpected 1st response part"
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echo "Expected: $exp1"
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echo "Actual : $res1"
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exit 1
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fi
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res2=$(swtpm_read_n_bytes_fd100 6)
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exp2=' 00 0a 00 00 01 00'
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if [ "$res2" != "$exp2" ]; then
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echo "3rd Startup: Unexpected 2nd part"
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echo "Expected: $exp2"
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echo "Actual : $res2"
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exit 1
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fi
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run_swtpm_ioctl ${SWTPM_INTERFACE} -s
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if [ $? -ne 0 ]; then
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echo "Error: Could not shut down the ${SWTPM_INTERFACE} TPM."
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exit 1
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fi
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if wait_process_gone ${SWTPM_PID} 4; then
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echo "Error: ${SWTPM_INTERFACE} TPM should not be running anymore."
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exit 1
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fi
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if [ ! -e $STATE_FILE ]; then
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echo "Error: TPM state file $STATE_FILE does not exist."
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exit 1
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fi
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echo "OK"
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exit 0
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