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stubdom/vtpm: correct the buffer size returned by TPM_CAP_PROP_INPUT_BUFFER
The vtpm2 ABI supports packets of up to 4088 bytes by default; expose this property though the TPM's interface so clients do not attempt to send larger packets. Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
This commit is contained in:
Daniel De Graaf authored and Ian Campbell committed
1 parent
9f0cf56683
commit
c9e6dcb08b
2 files changed
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@@ -209,6 +209,7 @@ tpm_emulator-$(XEN_TARGET_ARCH): tpm_emulator-$(TPMEMU_VERSION).tar.gz
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tar xzf $<
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mv tpm_emulator-$(TPMEMU_VERSION) $@
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patch -d $@ -p1 < tpmemu-$(TPMEMU_VERSION).patch;
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patch -d $@ -p1 < vtpm-bufsize.patch
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mkdir $@/build
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cd $@/build; CC=${CC} $(CMAKE) .. -DCMAKE_C_FLAGS:STRING="-std=c99 -DTPM_NO_EXTERN $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) -Wno-declaration-after-statement"
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touch $@
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@@ -0,0 +1,13 @@
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diff --git a/config.h.in b/config.h.in
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index d16a997..8088a2a 100644
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--- a/config.h.in
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+++ b/config.h.in
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@@ -27,7 +27,7 @@
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#define TPM_STORAGE_NAME "${TPM_STORAGE_NAME}"
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#define TPM_DEVICE_NAME "${TPM_DEVICE_NAME}"
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#define TPM_LOG_FILE "${TPM_LOG_FILE}"
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-#define TPM_CMD_BUF_SIZE 4096
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+#define TPM_CMD_BUF_SIZE 4088
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#endif /* _CONFIG_H_ */
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