testing: Add some debugging output into swtpm_ioctl's -h path

src/swtpm_ioctl/tpm_ioctl.c

@@ -984,6 +984,10 @@ int main(int argc, char *argv[])
         goto exit;
     }
 
+    if (command && !strcmp(command, "-h")) {
+        fprintf(stderr, "%s @ %d\n", __func__, __LINE__);
+    }
+
     if (!tpm_device && !tcp_hostname && !unix_path) {
         if (optind == argc) {
             fprintf(stderr, "Error: Missing device name.\n");
@@ -995,6 +999,10 @@ int main(int argc, char *argv[])
         }
     }
 
+    if (command && !strcmp(command, "-h")) {
+        fprintf(stderr, "%s @ %d\n", __func__, __LINE__);
+    }
+
     is_chardev = (tpm_device != NULL);
     if (is_chardev) {
         tmp = getenv("SWTPM_IOCTL_BUFFERSIZE");
@@ -1004,11 +1012,20 @@ int main(int argc, char *argv[])
         }
     }
 
+    if (command && !strcmp(command, "-h")) {
+        fprintf(stderr, "%s @ %d\n", __func__, __LINE__);
+    }
+
     fd = open_connection(tpm_device, tcp_hostname, tcp_port, unix_path);
     if (fd < 0) {
+        fprintf(stderr, "Could not create connection\n");
         goto exit;
     }
 
+    if (command && !strcmp(command, "-h")) {
+        fprintf(stderr, "%s @ %d\n", __func__, __LINE__);
+    }
+
     if (!strcmp(command, "-c")) {
         n = ctrlcmd(fd, PTM_GET_CAPABILITY, &cap, 0, sizeof(cap));
         if (n < 0) {
@@ -1122,10 +1139,12 @@ int main(int argc, char *argv[])
         }
 
     } else if (!strcmp(command, "-h")) {
+        fprintf(stderr, "hashing now!\n");
         if (do_hash_start_data_end(fd, is_chardev, hashdata)) {
+            fprintf(stderr, "hashing failed\n");
             goto exit;
         }
-
+        fprintf(stderr, "hashing succeeded\n");
     } else if (!strcmp(command, "-C")) {
         n = ctrlcmd(fd, PTM_CANCEL_TPM_CMD, &res, 0, sizeof(res));
         if (n < 0) {
@@ -1231,5 +1250,10 @@ int main(int argc, char *argv[])
 
 exit:
     free(tcp_hostname);
+
+    if (command && !strcmp(command, "-h")) {
+        fprintf(stderr, "Exiting with ret=%d\n", ret);
+    }
+
     return ret;
 }