diff --git a/debuggerd/libdebuggerd/tombstone.cpp b/debuggerd/libdebuggerd/tombstone.cpp
index da2ba58..1993840 100644
--- a/debuggerd/libdebuggerd/tombstone.cpp
+++ b/debuggerd/libdebuggerd/tombstone.cpp
@@ -595,7 +595,7 @@
       }
       AndroidLogEntry e;
       char buf[512];
-      if (android_log_processBinaryLogBuffer(&log_entry.entry_v1, &e, g_eventTagMap, buf,
+      if (android_log_processBinaryLogBuffer(&log_entry.entry, &e, g_eventTagMap, buf,
                                              sizeof(buf)) == 0) {
         _LOG(log, logtype::LOGS, "%s.%03d %5d %5d %c %-8.*s: %s\n", timeBuf,
              log_entry.entry.nsec / 1000000, log_entry.entry.pid, log_entry.entry.tid, 'I',
diff --git a/liblog/Android.bp b/liblog/Android.bp
index c40c5ef..91bd52c 100644
--- a/liblog/Android.bp
+++ b/liblog/Android.bp
@@ -105,6 +105,11 @@
         versions: ["10000"],
     },
 
+    // TODO(tomcherry): Renable this before release branch is cut
+    header_abi_checker: {
+        enabled: false,
+    },
+
     cflags: [
         "-Wall",
         "-Werror",
diff --git a/liblog/README.protocol.md b/liblog/README.protocol.md
new file mode 100644
index 0000000..fef29c9
--- /dev/null
+++ b/liblog/README.protocol.md
@@ -0,0 +1,49 @@
+# liblog -> logd
+
+The data that liblog sends to logd is represented below.
+
+    struct {
+        android_log_header_t header;
+        union {
+           struct {
+                char     prio;
+                char     tag[...];
+                char     message[...];
+            } string;
+            struct {
+                android_event_header_t event_header;
+                android_event_*_t      payload[...];
+            } binary;
+        };
+    };
+
+The payload, excluding the header, has a max size of LOGGER_ENTRY_MAX_PAYLOAD.
+
+## header
+
+The header is added immediately before sending the log message to logd.
+
+## `string` payload
+
+The `string` part of the union is for normal buffers (main, system, radio, etc) and consists of a
+single character priority, followed by a variable length null terminated string for the tag, and
+finally a variable length null terminated string for the message.
+
+This payload is used for the `__android_log_buf_write()` family of functions.
+
+## `binary` payload
+
+The `binary` part of the union is for binary buffers (events, security, etc) and consists of an
+android_event_header_t struct followed by a variable number of android_event_*_t
+(android_event_list_t, android_event_int_t, etc) structs.
+
+If multiple android_event_*_t elements are present, then they must be in a list and the first
+element in payload must be an android_event_list_t.
+
+This payload is used for the `__android_log_bwrite()` family of functions. It is additionally used
+for `android_log_write_list()` and the related functions that manipulate event lists.
+
+# logd -> liblog
+
+logd sends a `logger_entry` struct to liblog followed by the payload. The payload is identical to
+the payloads defined above. The max size of the entire message from logd is LOGGER_ENTRY_MAX_LEN.
diff --git a/liblog/include/log/log_read.h b/liblog/include/log/log_read.h
index 2079e7a..ee3b250 100644
--- a/liblog/include/log/log_read.h
+++ b/liblog/include/log/log_read.h
@@ -50,53 +50,9 @@
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wzero-length-array"
-/*
- * The userspace structure for version 1 of the logger_entry ABI.
- */
 struct logger_entry {
-  uint16_t len;   /* length of the payload */
-  uint16_t __pad; /* no matter what, we get 2 bytes of padding */
-  int32_t pid;    /* generating process's pid */
-  int32_t tid;    /* generating process's tid */
-  int32_t sec;    /* seconds since Epoch */
-  int32_t nsec;   /* nanoseconds */
-  char msg[0]; /* the entry's payload */
-};
-
-/*
- * The userspace structure for version 2 of the logger_entry ABI.
- */
-struct logger_entry_v2 {
   uint16_t len;      /* length of the payload */
-  uint16_t hdr_size; /* sizeof(struct logger_entry_v2) */
-  int32_t pid;       /* generating process's pid */
-  int32_t tid;       /* generating process's tid */
-  int32_t sec;       /* seconds since Epoch */
-  int32_t nsec;      /* nanoseconds */
-  uint32_t euid;     /* effective UID of logger */
-  char msg[0]; /* the entry's payload */
-} __attribute__((__packed__));
-
-/*
- * The userspace structure for version 3 of the logger_entry ABI.
- */
-struct logger_entry_v3 {
-  uint16_t len;      /* length of the payload */
-  uint16_t hdr_size; /* sizeof(struct logger_entry_v3) */
-  int32_t pid;       /* generating process's pid */
-  int32_t tid;       /* generating process's tid */
-  int32_t sec;       /* seconds since Epoch */
-  int32_t nsec;      /* nanoseconds */
-  uint32_t lid;      /* log id of the payload */
-  char msg[0]; /* the entry's payload */
-} __attribute__((__packed__));
-
-/*
- * The userspace structure for version 4 of the logger_entry ABI.
- */
-struct logger_entry_v4 {
-  uint16_t len;      /* length of the payload */
-  uint16_t hdr_size; /* sizeof(struct logger_entry_v4) */
+  uint16_t hdr_size; /* sizeof(struct logger_entry) */
   int32_t pid;       /* generating process's pid */
   uint32_t tid;      /* generating process's tid */
   uint32_t sec;      /* seconds since Epoch */
@@ -124,11 +80,7 @@
 struct log_msg {
   union {
     unsigned char buf[LOGGER_ENTRY_MAX_LEN + 1];
-    struct logger_entry_v4 entry;
-    struct logger_entry_v4 entry_v4;
-    struct logger_entry_v3 entry_v3;
-    struct logger_entry_v2 entry_v2;
-    struct logger_entry entry_v1;
+    struct logger_entry entry;
   } __attribute__((aligned(4)));
 #ifdef __cplusplus
   /* Matching log_time operators */
@@ -162,19 +114,12 @@
   }
   char* msg() {
     unsigned short hdr_size = entry.hdr_size;
-    if (!hdr_size) {
-      hdr_size = sizeof(entry_v1);
-    }
-    if ((hdr_size < sizeof(entry_v1)) || (hdr_size > sizeof(entry))) {
+    if (hdr_size != sizeof(entry)) {
       return nullptr;
     }
     return reinterpret_cast<char*>(buf) + hdr_size;
   }
-  unsigned int len() {
-    return (entry.hdr_size ? entry.hdr_size
-                           : static_cast<uint16_t>(sizeof(entry_v1))) +
-           entry.len;
-  }
+  unsigned int len() { return entry.hdr_size + entry.len; }
 #endif
 };
 
diff --git a/liblog/logd_writer.cpp b/liblog/logd_writer.cpp
index 06a2baf..a22c3be 100644
--- a/liblog/logd_writer.cpp
+++ b/liblog/logd_writer.cpp
@@ -148,24 +148,6 @@
     return 0;
   }
 
-  /*
-   *  struct {
-   *      // what we provide to socket
-   *      android_log_header_t header;
-   *      // caller provides
-   *      union {
-   *          struct {
-   *              char     prio;
-   *              char     payload[];
-   *          } string;
-   *          struct {
-   *              uint32_t tag
-   *              char     payload[];
-   *          } binary;
-   *      };
-   *  };
-   */
-
   header.tid = gettid();
   header.realtime.tv_sec = ts->tv_sec;
   header.realtime.tv_nsec = ts->tv_nsec;
diff --git a/liblog/logger.h b/liblog/logger.h
index 8cae66c..02cad22 100644
--- a/liblog/logger.h
+++ b/liblog/logger.h
@@ -96,8 +96,6 @@
 
   struct android_log_transport_read* transport;
   unsigned logMask;      /* mask of requested log buffers */
-  int ret;               /* return value associated with following data */
-  struct log_msg logMsg; /* peek at upcoming data, valid if logMsg.len != 0 */
 };
 
 struct android_log_logger_list {
diff --git a/liblog/logger_read.cpp b/liblog/logger_read.cpp
index ff816b7..4b4012a 100644
--- a/liblog/logger_read.cpp
+++ b/liblog/logger_read.cpp
@@ -92,7 +92,6 @@
 
   logger_list->transport_context.transport = transport;
   logger_list->transport_context.logMask = logMask;
-  logger_list->transport_context.ret = 1;
 #endif
   return 0;
 }
@@ -273,34 +272,24 @@
                                   struct log_msg* log_msg) {
   int ret = (*transp->transport->read)(logger_list, transp, log_msg);
 
+  if (ret < 0) {
+    return ret;
+  }
+
   if (ret > (int)sizeof(*log_msg)) {
     ret = sizeof(*log_msg);
   }
 
-  transp->ret = ret;
-
-  /* propagate errors, or make sure len & hdr_size members visible */
-  if (ret < (int)(sizeof(log_msg->entry.len) + sizeof(log_msg->entry.hdr_size))) {
-    if (ret >= (int)sizeof(log_msg->entry.len)) {
-      log_msg->entry.len = 0;
-    }
-    return ret;
-  }
-
-  /* hdr_size correction (logger_entry -> logger_entry_v2+ conversion) */
-  if (log_msg->entry_v2.hdr_size == 0) {
-    log_msg->entry_v2.hdr_size = sizeof(struct logger_entry);
-  }
-  if ((log_msg->entry_v2.hdr_size < sizeof(log_msg->entry_v1)) ||
-      (log_msg->entry_v2.hdr_size > sizeof(log_msg->entry))) {
+  if (ret < static_cast<int>(sizeof(log_msg->entry))) {
     return -EINVAL;
   }
 
-  /* len validation */
-  if (ret <= log_msg->entry_v2.hdr_size) {
-    log_msg->entry.len = 0;
-  } else {
-    log_msg->entry.len = ret - log_msg->entry_v2.hdr_size;
+  if (log_msg->entry.hdr_size != sizeof(log_msg->entry)) {
+    return -EINVAL;
+  }
+
+  if (log_msg->entry.len > ret - log_msg->entry.hdr_size) {
+    return -EINVAL;
   }
 
   return ret;
diff --git a/liblog/logprint.cpp b/liblog/logprint.cpp
index 82fbafd..4b61828 100644
--- a/liblog/logprint.cpp
+++ b/liblog/logprint.cpp
@@ -532,18 +532,12 @@
 
   int i;
   char* msg = buf->msg;
-  struct logger_entry_v2* buf2 = (struct logger_entry_v2*)buf;
-  if (buf2->hdr_size) {
-    if ((buf2->hdr_size < sizeof(((struct log_msg*)NULL)->entry_v1)) ||
-        (buf2->hdr_size > sizeof(((struct log_msg*)NULL)->entry))) {
-      fprintf(stderr, "+++ LOG: entry illegal hdr_size\n");
-      return -1;
-    }
-    msg = ((char*)buf2) + buf2->hdr_size;
-    if (buf2->hdr_size >= sizeof(struct logger_entry_v4)) {
-      entry->uid = ((struct logger_entry_v4*)buf)->uid;
-    }
+  if (buf->hdr_size != sizeof(struct logger_entry)) {
+    fprintf(stderr, "+++ LOG: entry illegal hdr_size\n");
+    return -1;
   }
+  entry->uid = buf->uid;
+
   for (i = 1; i < buf->len; i++) {
     if (msg[i] == '\0') {
       if (msgStart == -1) {
@@ -993,27 +987,15 @@
   entry->pid = buf->pid;
   entry->tid = buf->tid;
 
-  /*
-   * Pull the tag out, fill in some additional details based on incoming
-   * buffer version (v3 adds lid, v4 adds uid).
-   */
   eventData = (const unsigned char*)buf->msg;
-  struct logger_entry_v2* buf2 = (struct logger_entry_v2*)buf;
-  if (buf2->hdr_size) {
-    if ((buf2->hdr_size < sizeof(((struct log_msg*)NULL)->entry_v1)) ||
-        (buf2->hdr_size > sizeof(((struct log_msg*)NULL)->entry))) {
-      fprintf(stderr, "+++ LOG: entry illegal hdr_size\n");
-      return -1;
-    }
-    eventData = ((unsigned char*)buf2) + buf2->hdr_size;
-    if ((buf2->hdr_size >= sizeof(struct logger_entry_v3)) &&
-        (((struct logger_entry_v3*)buf)->lid == LOG_ID_SECURITY)) {
-      entry->priority = ANDROID_LOG_WARN;
-    }
-    if (buf2->hdr_size >= sizeof(struct logger_entry_v4)) {
-      entry->uid = ((struct logger_entry_v4*)buf)->uid;
-    }
+  if (buf->hdr_size != sizeof(struct logger_entry)) {
+    fprintf(stderr, "+++ LOG: entry illegal hdr_size\n");
+    return -1;
   }
+  if (buf->lid == LOG_ID_SECURITY) {
+    entry->priority = ANDROID_LOG_WARN;
+  }
+  entry->uid = buf->uid;
   inCount = buf->len;
   if (inCount < sizeof(android_event_header_t)) return -1;
   auto* event_header = reinterpret_cast<const android_event_header_t*>(eventData);
@@ -1069,9 +1051,6 @@
   if ((result == 1) && fmtStr) {
     /* We overflowed :-(, let's repaint the line w/o format dressings */
     eventData = (const unsigned char*)buf->msg;
-    if (buf2->hdr_size) {
-      eventData = ((unsigned char*)buf2) + buf2->hdr_size;
-    }
     eventData += 4;
     outBuf = messageBuf;
     outRemaining = messageBufLen - 1;
diff --git a/liblog/pmsg_reader.cpp b/liblog/pmsg_reader.cpp
index ce923f3..f43ce3a 100644
--- a/liblog/pmsg_reader.cpp
+++ b/liblog/pmsg_reader.cpp
@@ -144,7 +144,7 @@
           ((logger_list->start.tv_sec != buf.l.realtime.tv_sec) ||
            (logger_list->start.tv_nsec <= buf.l.realtime.tv_nsec)))) &&
         (!logger_list->pid || (logger_list->pid == buf.p.pid))) {
-      char* msg = log_msg->entry_v4.msg;
+      char* msg = log_msg->entry.msg;
       *msg = buf.prio;
       fd = atomic_load(&transp->context.fd);
       if (fd <= 0) {
@@ -158,16 +158,16 @@
         return -EIO;
       }
 
-      log_msg->entry_v4.len = buf.p.len - sizeof(buf) + sizeof(buf.prio);
-      log_msg->entry_v4.hdr_size = sizeof(log_msg->entry_v4);
-      log_msg->entry_v4.pid = buf.p.pid;
-      log_msg->entry_v4.tid = buf.l.tid;
-      log_msg->entry_v4.sec = buf.l.realtime.tv_sec;
-      log_msg->entry_v4.nsec = buf.l.realtime.tv_nsec;
-      log_msg->entry_v4.lid = buf.l.id;
-      log_msg->entry_v4.uid = buf.p.uid;
+      log_msg->entry.len = buf.p.len - sizeof(buf) + sizeof(buf.prio);
+      log_msg->entry.hdr_size = sizeof(log_msg->entry);
+      log_msg->entry.pid = buf.p.pid;
+      log_msg->entry.tid = buf.l.tid;
+      log_msg->entry.sec = buf.l.realtime.tv_sec;
+      log_msg->entry.nsec = buf.l.realtime.tv_nsec;
+      log_msg->entry.lid = buf.l.id;
+      log_msg->entry.uid = buf.p.uid;
 
-      return ret + sizeof(buf.prio) + log_msg->entry_v4.hdr_size;
+      return ret + sizeof(buf.prio) + log_msg->entry.hdr_size;
     }
 
     fd = atomic_load(&transp->context.fd);
@@ -215,7 +215,7 @@
   struct android_log_transport_context transp;
   struct content {
     struct listnode node;
-    struct logger_entry_v4 entry;
+    struct logger_entry entry;
   } * content;
   struct names {
     struct listnode node;
@@ -267,25 +267,26 @@
   }
 
   /* Read the file content */
-  while (pmsgRead(&logger_list, &transp, &transp.logMsg) > 0) {
+  log_msg log_msg;
+  while (pmsgRead(&logger_list, &transp, &log_msg) > 0) {
     const char* cp;
-    size_t hdr_size = transp.logMsg.entry.hdr_size ? transp.logMsg.entry.hdr_size
-                                                   : sizeof(transp.logMsg.entry_v1);
-    char* msg = (char*)&transp.logMsg + hdr_size;
+    size_t hdr_size = log_msg.entry.hdr_size;
+
+    char* msg = (char*)&log_msg + hdr_size;
     const char* split = NULL;
 
-    if ((hdr_size < sizeof(transp.logMsg.entry_v1)) || (hdr_size > sizeof(transp.logMsg.entry))) {
+    if (hdr_size != sizeof(log_msg.entry)) {
       continue;
     }
     /* Check for invalid sequence number */
-    if ((transp.logMsg.entry.nsec % ANDROID_LOG_PMSG_FILE_SEQUENCE) ||
-        ((transp.logMsg.entry.nsec / ANDROID_LOG_PMSG_FILE_SEQUENCE) >=
-         ANDROID_LOG_PMSG_FILE_MAX_SEQUENCE)) {
+    if (log_msg.entry.nsec % ANDROID_LOG_PMSG_FILE_SEQUENCE ||
+        (log_msg.entry.nsec / ANDROID_LOG_PMSG_FILE_SEQUENCE) >=
+            ANDROID_LOG_PMSG_FILE_MAX_SEQUENCE) {
       continue;
     }
 
     /* Determine if it has <dirbase>:<filebase> format for tag */
-    len = transp.logMsg.entry.len - sizeof(prio);
+    len = log_msg.entry.len - sizeof(prio);
     for (cp = msg + sizeof(prio); *cp && isprint(*cp) && !isspace(*cp) && --len; ++cp) {
       if (*cp == ':') {
         if (split) {
@@ -331,8 +332,8 @@
     /* check if there is an existing entry */
     list_for_each(node, &name_list) {
       names = node_to_item(node, struct names, node);
-      if (!strcmp(names->name, msg + sizeof(prio)) && (names->id == transp.logMsg.entry.lid) &&
-          (names->prio == *msg)) {
+      if (!strcmp(names->name, msg + sizeof(prio)) && names->id == log_msg.entry.lid &&
+          names->prio == *msg) {
         break;
       }
     }
@@ -349,7 +350,7 @@
         break;
       }
       strcpy(names->name, msg + sizeof(prio));
-      names->id = static_cast<log_id_t>(transp.logMsg.entry.lid);
+      names->id = static_cast<log_id_t>(log_msg.entry.lid);
       names->prio = *msg;
       list_init(&names->content);
       /*
@@ -402,7 +403,7 @@
     /* Remove any file fragments that match our sequence number */
     list_for_each_safe(node, n, &names->content) {
       content = node_to_item(node, struct content, node);
-      if (transp.logMsg.entry.nsec == content->entry.nsec) {
+      if (log_msg.entry.nsec == content->entry.nsec) {
         list_remove(&content->node);
         free(content);
       }
@@ -410,16 +411,16 @@
 
     /* Add content */
     content = static_cast<struct content*>(
-        calloc(1, sizeof(content->node) + hdr_size + transp.logMsg.entry.len));
+        calloc(1, sizeof(content->node) + hdr_size + log_msg.entry.len));
     if (!content) {
       ret = -ENOMEM;
       break;
     }
-    memcpy(&content->entry, &transp.logMsg.entry, hdr_size + transp.logMsg.entry.len);
+    memcpy(&content->entry, &log_msg.entry, hdr_size + log_msg.entry.len);
 
     /* Insert in sequence number sorted order, to ease reconstruction */
     list_for_each_reverse(node, &names->content) {
-      if ((node_to_item(node, struct content, node))->entry.nsec < transp.logMsg.entry.nsec) {
+      if ((node_to_item(node, struct content, node))->entry.nsec < log_msg.entry.nsec) {
         break;
       }
     }
diff --git a/liblog/tests/liblog_test.cpp b/liblog/tests/liblog_test.cpp
index 94c4fbb..c402e20 100644
--- a/liblog/tests/liblog_test.cpp
+++ b/liblog/tests/liblog_test.cpp
@@ -385,7 +385,7 @@
         fprintf(stderr, "Expect \"Binary log entry conversion failed\"\n");
       }
       int processBinaryLogBuffer = android_log_processBinaryLogBuffer(
-          &log_msg.entry_v1, &entry, NULL, msgBuf, sizeof(msgBuf));
+          &log_msg.entry, &entry, nullptr, msgBuf, sizeof(msgBuf));
       EXPECT_EQ((length == total) ? 0 : -1, processBinaryLogBuffer);
       if ((processBinaryLogBuffer == 0) || entry.message) {
         size_t line_overhead = 20;
@@ -469,8 +469,7 @@
     AndroidLogFormat* logformat = android_log_format_new();
     EXPECT_TRUE(NULL != logformat);
     AndroidLogEntry entry;
-    int processLogBuffer =
-        android_log_processLogBuffer(&log_msg.entry_v1, &entry);
+    int processLogBuffer = android_log_processLogBuffer(&log_msg.entry, &entry);
     EXPECT_EQ(0, processLogBuffer);
     if (processLogBuffer == 0) {
       size_t line_overhead = 11;
@@ -1013,8 +1012,7 @@
     AndroidLogFormat* logformat = android_log_format_new();
     EXPECT_TRUE(NULL != logformat);
     AndroidLogEntry entry;
-    int processLogBuffer =
-        android_log_processLogBuffer(&log_msg.entry_v1, &entry);
+    int processLogBuffer = android_log_processLogBuffer(&log_msg.entry, &entry);
     EXPECT_EQ(0, processLogBuffer);
     if (processLogBuffer == 0) {
       fflush(stderr);
@@ -2507,8 +2505,8 @@
     EXPECT_TRUE(NULL != logformat);
     AndroidLogEntry entry;
     char msgBuf[1024];
-    int processBinaryLogBuffer = android_log_processBinaryLogBuffer(
-        &log_msg.entry_v1, &entry, NULL, msgBuf, sizeof(msgBuf));
+    int processBinaryLogBuffer =
+        android_log_processBinaryLogBuffer(&log_msg.entry, &entry, nullptr, msgBuf, sizeof(msgBuf));
     EXPECT_EQ(0, processBinaryLogBuffer);
     if (processBinaryLogBuffer == 0) {
       int line_overhead = 20;
diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index 4dcb338..f164a12 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -337,13 +337,12 @@
             context->eventTagMap = android_openEventTagMap(nullptr);
             context->hasOpenedEventTagMap = true;
         }
-        err = android_log_processBinaryLogBuffer(
-            &buf->entry_v1, &entry, context->eventTagMap, binaryMsgBuf,
-            sizeof(binaryMsgBuf));
+        err = android_log_processBinaryLogBuffer(&buf->entry, &entry, context->eventTagMap,
+                                                 binaryMsgBuf, sizeof(binaryMsgBuf));
         // printf(">>> pri=%d len=%d msg='%s'\n",
         //    entry.priority, entry.messageLen, entry.message);
     } else {
-        err = android_log_processLogBuffer(&buf->entry_v1, &entry);
+        err = android_log_processLogBuffer(&buf->entry, &entry);
     }
     if ((err < 0) && !context->debug) return;
 
diff --git a/logd/LogBufferElement.cpp b/logd/LogBufferElement.cpp
index 5c43e18..ec81933 100644
--- a/logd/LogBufferElement.cpp
+++ b/logd/LogBufferElement.cpp
@@ -245,9 +245,9 @@
 }
 
 log_time LogBufferElement::flushTo(SocketClient* reader, LogBuffer* parent, bool lastSame) {
-    struct logger_entry_v4 entry = {};
+    struct logger_entry entry = {};
 
-    entry.hdr_size = sizeof(struct logger_entry_v4);
+    entry.hdr_size = sizeof(struct logger_entry);
     entry.lid = mLogId;
     entry.pid = mPid;
     entry.tid = mTid;
diff --git a/logd/LogTags.cpp b/logd/LogTags.cpp
index f19e7b0..0cc7886 100644
--- a/logd/LogTags.cpp
+++ b/logd/LogTags.cpp
@@ -311,9 +311,7 @@
         if (log_msg.entry.len <= sizeof(uint32_t)) continue;
         uint32_t Tag = get4LE(msg);
         if (Tag != TAG_DEF_LOG_TAG) continue;
-        uid_t uid = (log_msg.entry.hdr_size >= sizeof(logger_entry_v4))
-                        ? log_msg.entry.uid
-                        : AID_ROOT;
+        uid_t uid = log_msg.entry.uid;
 
         std::string Name;
         std::string Format;
diff --git a/logd/tests/logd_test.cpp b/logd/tests/logd_test.cpp
index 80625a7..f47bee1 100644
--- a/logd/tests/logd_test.cpp
+++ b/logd/tests/logd_test.cpp
@@ -241,47 +241,18 @@
 static void caught_signal(int /* signum */) {
 }
 
-static void dump_log_msg(const char* prefix, log_msg* msg, unsigned int version,
-                         int lid) {
+static void dump_log_msg(const char* prefix, log_msg* msg, int lid) {
     std::cout << std::flush;
     std::cerr << std::flush;
     fflush(stdout);
     fflush(stderr);
-    switch (msg->entry.hdr_size) {
-        case 0:
-            version = 1;
-            break;
+    EXPECT_EQ(sizeof(logger_entry), msg->entry.hdr_size);
 
-        case sizeof(msg->entry_v2): /* PLUS case sizeof(msg->entry_v3): */
-            if (version == 0) {
-                version = (msg->entry_v3.lid < LOG_ID_MAX) ? 3 : 2;
-            }
-            break;
-
-        case sizeof(msg->entry_v4):
-            if (version == 0) {
-                version = 4;
-            }
-            break;
-    }
-
-    fprintf(stderr, "%s: v%u[%u] ", prefix, version, msg->len());
-    if (version != 1) {
-        fprintf(stderr, "hdr_size=%u ", msg->entry.hdr_size);
-    }
-    fprintf(stderr, "pid=%u tid=%u %u.%09u ", msg->entry.pid, msg->entry.tid,
-            msg->entry.sec, msg->entry.nsec);
-    switch (version) {
-        case 1:
-            break;
-        case 2:
-            fprintf(stderr, "euid=%u ", msg->entry_v2.euid);
-            break;
-        case 3:
-        default:
-            lid = msg->entry.lid;
-            break;
-    }
+    fprintf(stderr, "%s: [%u] ", prefix, msg->len());
+    fprintf(stderr, "hdr_size=%u ", msg->entry.hdr_size);
+    fprintf(stderr, "pid=%u tid=%u %u.%09u ", msg->entry.pid, msg->entry.tid, msg->entry.sec,
+            msg->entry.nsec);
+    lid = msg->entry.lid;
 
     switch (lid) {
         case 0:
@@ -584,11 +555,11 @@
     }
 
     if (content_wrap) {
-        dump_log_msg("wrap", &msg_wrap, 3, -1);
+        dump_log_msg("wrap", &msg_wrap, -1);
     }
 
     if (content_timeout) {
-        dump_log_msg("timeout", &msg_timeout, 3, -1);
+        dump_log_msg("timeout", &msg_timeout, -1);
     }
 
     EXPECT_TRUE(written);
@@ -721,11 +692,11 @@
     }
 
     if (content_wrap) {
-        dump_log_msg("wrap", &msg_wrap, 3, -1);
+        dump_log_msg("wrap", &msg_wrap, -1);
     }
 
     if (content_timeout) {
-        dump_log_msg("timeout", &msg_timeout, 3, -1);
+        dump_log_msg("timeout", &msg_timeout, -1);
     }
 
     if (content_wrap || !content_timeout) {
@@ -776,7 +747,7 @@
 
     EXPECT_TRUE(read_one);
     if (read_one) {
-        dump_log_msg("user", &msg, 3, -1);
+        dump_log_msg("user", &msg, -1);
     }
 
     fprintf(stderr, "Sleep for >%d seconds logd SO_SNDTIMEO ...\n", sndtimeo);
@@ -794,7 +765,7 @@
 
     EXPECT_EQ(0, recv_ret);
     if (recv_ret > 0) {
-        dump_log_msg("user", &msg, 3, -1);
+        dump_log_msg("user", &msg, -1);
     }
     EXPECT_EQ(0, save_errno);