[RFC PATCH v2 1/8] conf: Move TPM emulator parameters into own struct

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To avoid passing TPM emulator parameters around individually, move them
into a structure and pass around the structure.

Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxxxxx>
---
 src/conf/domain_conf.h  | 24 ++++++++++++----------
 src/conf/virconftypes.h |  2 ++
 src/qemu/qemu_tpm.c     | 45 ++++++++++++++++-------------------------
 3 files changed, 32 insertions(+), 39 deletions(-)

diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index a15af4fae3..e5aee3c2cf 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1465,6 +1465,18 @@ typedef enum {
 
 #define VIR_DOMAIN_TPM_DEFAULT_DEVICE "/dev/tpm0"
 
+struct _virDomainTPMEmulatorDef {
+    virDomainTPMVersion version;
+    virDomainChrSourceDef *source;
+    char *storagepath;
+    char *logfile;
+    unsigned int debug;
+    unsigned char secretuuid[VIR_UUID_BUFLEN];
+    bool hassecretuuid;
+    bool persistent_state;
+    virBitmap *activePcrBanks;
+};
+
 struct _virDomainTPMDef {
     virObject *privateData;
 
@@ -1475,17 +1487,7 @@ struct _virDomainTPMDef {
         struct {
             virDomainChrSourceDef *source;
         } passthrough;
-        struct {
-            virDomainTPMVersion version;
-            virDomainChrSourceDef *source;
-            char *storagepath;
-            char *logfile;
-            unsigned int debug;
-            unsigned char secretuuid[VIR_UUID_BUFLEN];
-            bool hassecretuuid;
-            bool persistent_state;
-            virBitmap *activePcrBanks;
-        } emulator;
+        virDomainTPMEmulatorDef emulator;
         struct {
             virDomainChrSourceDef *source;
         } external;
diff --git a/src/conf/virconftypes.h b/src/conf/virconftypes.h
index f18ebcca10..59be61cea4 100644
--- a/src/conf/virconftypes.h
+++ b/src/conf/virconftypes.h
@@ -234,6 +234,8 @@ typedef struct _virDomainAudioDef virDomainAudioDef;
 
 typedef struct _virDomainTPMDef virDomainTPMDef;
 
+typedef struct _virDomainTPMEmulatorDef virDomainTPMEmulatorDef;
+
 typedef struct _virDomainThreadSchedParam virDomainThreadSchedParam;
 
 typedef struct _virDomainTimerCatchupDef virDomainTimerCatchupDef;
diff --git a/src/qemu/qemu_tpm.c b/src/qemu/qemu_tpm.c
index 2f17918cbb..592fcc62fa 100644
--- a/src/qemu/qemu_tpm.c
+++ b/src/qemu/qemu_tpm.c
@@ -350,10 +350,8 @@ qemuTPMVirCommandAddEncryption(virCommand *cmd,
  * @swtpm_user: The userid to switch to when setting up the TPM;
  *              typically this should be the uid of 'tss' or 'root'
  * @swtpm_group: The group id to switch to
- * @logfile: The file to write the log into; it must be writable
- *           for the user given by userid or 'tss'
- * @tpmversion: The version of the TPM, either a TPM 1.2 or TPM 2
- * @encryption: pointer to virStorageEncryption holding secret
+ * @emulator: emulator parameters
+ * @secretuuid: UUID describing virStorageEncryption holding secret
  * @incomingMigration: whether we have an incoming migration
  *
  * Setup the external swtpm by creating endorsement key and
@@ -366,8 +364,7 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
                         bool privileged,
                         uid_t swtpm_user,
                         gid_t swtpm_group,
-                        const char *logfile,
-                        const virDomainTPMVersion tpmversion,
+                        const virDomainTPMEmulatorDef *emulator,
                         const unsigned char *secretuuid,
                         bool incomingMigration)
 {
@@ -380,9 +377,9 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
     if (!swtpm_setup)
         return -1;
 
-    if (!privileged && tpmversion == VIR_DOMAIN_TPM_VERSION_1_2 &&
+    if (!privileged && emulator->version == VIR_DOMAIN_TPM_VERSION_1_2 &&
         !virTPMSwtpmSetupCapsGet(VIR_TPM_SWTPM_SETUP_FEATURE_TPM12_NOT_NEED_ROOT)) {
-        return virFileWriteStr(logfile,
+        return virFileWriteStr(emulator->logfile,
                                _("Did not create EK and certificates since this requires privileged mode for a TPM 1.2\n"), 0600);
     }
 
@@ -397,7 +394,7 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
     virCommandSetUID(cmd, swtpm_user);
     virCommandSetGID(cmd, swtpm_group);
 
-    switch (tpmversion) {
+    switch (emulator->version) {
     case VIR_DOMAIN_TPM_VERSION_1_2:
         break;
     case VIR_DOMAIN_TPM_VERSION_2_0:
@@ -415,7 +412,7 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
         virCommandAddArgList(cmd,
                              "--tpm-state", storagepath,
                              "--vmid", vmid,
-                             "--logfile", logfile,
+                             "--logfile", emulator->logfile,
                              "--createek",
                              "--create-ek-cert",
                              "--create-platform-cert",
@@ -425,7 +422,7 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
     } else {
         virCommandAddArgList(cmd,
                              "--tpm-state", storagepath,
-                             "--logfile", logfile,
+                             "--logfile", emulator->logfile,
                              "--overwrite",
                              NULL);
     }
@@ -435,7 +432,7 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
     if (virCommandRun(cmd, &exitstatus) < 0 || exitstatus != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Could not run '%1$s'. exitstatus: %2$d; Check error log '%3$s' for details."),
-                          swtpm_setup, exitstatus, logfile);
+                          swtpm_setup, exitstatus, emulator->logfile);
         return -1;
     }
 
@@ -469,10 +466,7 @@ qemuTPMPcrBankBitmapToStr(virBitmap *activePcrBanks)
  * @swtpm_user: The userid to switch to when setting up the TPM;
  *              typically this should be the uid of 'tss' or 'root'
  * @swtpm_group: The group id to switch to
- * @activePcrBanks: The string describing the active PCR banks
- * @logfile: The file to write the log into; it must be writable
- *           for the user given by userid or 'tss'
- * @tpmversion: The version of the TPM, either a TPM 1.2 or TPM 2
+ * @emulator: emulator parameters
  * @secretuuid: The secret's UUID needed for state encryption
  *
  * Reconfigure the active PCR banks of a TPM 2.
@@ -481,9 +475,7 @@ static int
 qemuTPMEmulatorReconfigure(const char *storagepath,
                            uid_t swtpm_user,
                            gid_t swtpm_group,
-                           virBitmap *activePcrBanks,
-                           const char *logfile,
-                           const virDomainTPMVersion tpmversion,
+                           const virDomainTPMEmulatorDef *emulator,
                            const unsigned char *secretuuid)
 {
     g_autoptr(virCommand) cmd = NULL;
@@ -494,8 +486,8 @@ qemuTPMEmulatorReconfigure(const char *storagepath,
     if (!swtpm_setup)
         return -1;
 
-    if (tpmversion != VIR_DOMAIN_TPM_VERSION_2_0 ||
-        (activePcrBanksStr = qemuTPMPcrBankBitmapToStr(activePcrBanks)) == NULL ||
+    if (emulator->version != VIR_DOMAIN_TPM_VERSION_2_0 ||
+        (activePcrBanksStr = qemuTPMPcrBankBitmapToStr(emulator->activePcrBanks)) == NULL ||
         !virTPMSwtpmSetupCapsGet(VIR_TPM_SWTPM_SETUP_FEATURE_CMDARG_RECONFIGURE_PCR_BANKS))
         return 0;
 
@@ -511,7 +503,7 @@ qemuTPMEmulatorReconfigure(const char *storagepath,
 
     virCommandAddArgList(cmd,
                          "--tpm-state", storagepath,
-                         "--logfile", logfile,
+                         "--logfile", emulator->logfile,
                          "--pcr-banks", activePcrBanksStr,
                          "--reconfigure",
                          NULL);
@@ -521,7 +513,7 @@ qemuTPMEmulatorReconfigure(const char *storagepath,
     if (virCommandRun(cmd, &exitstatus) < 0 || exitstatus != 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        _("Could not run '%1$s --reconfigure'. exitstatus: %2$d; Check error log '%3$s' for details."),
-                          swtpm_setup, exitstatus, logfile);
+                          swtpm_setup, exitstatus, emulator->logfile);
         return -1;
     }
 
@@ -582,17 +574,14 @@ qemuTPMEmulatorBuildCommand(virDomainTPMDef *tpm,
     if (created &&
         qemuTPMEmulatorRunSetup(tpm->data.emulator.storagepath, vmname, vmuuid,
                                 privileged, swtpm_user, swtpm_group,
-                                tpm->data.emulator.logfile,
-                                tpm->data.emulator.version,
+                                &tpm->data.emulator,
                                 secretuuid, incomingMigration) < 0)
         goto error;
 
     if (!incomingMigration &&
         qemuTPMEmulatorReconfigure(tpm->data.emulator.storagepath,
                                    swtpm_user, swtpm_group,
-                                   tpm->data.emulator.activePcrBanks,
-                                   tpm->data.emulator.logfile,
-                                   tpm->data.emulator.version,
+                                   &tpm->data.emulator,
                                    secretuuid) < 0)
         goto error;
 
-- 
2.46.1



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