diff --git a/utils/mirror_vfd/mirror_remote.c b/utils/mirror_vfd/mirror_remote.c
index 170d61d939f..d5f2e89bcd2 100644
--- a/utils/mirror_vfd/mirror_remote.c
+++ b/utils/mirror_vfd/mirror_remote.c
@@ -10,9 +10,8 @@
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-/* Common operations for "remote" processes for the Mirror VFD.
- *
- * Jacob Smith, 2020-03-06
+/*
+ * Common operations for "remote" processes for the mirror VFD
  */
 
 #include "mirror_remote.h"
@@ -31,19 +30,19 @@ mirror_log(struct mirror_log_info *info, unsigned int level, const char *format,
 {
     FILE        *stream    = MIRROR_LOG_DEFAULT_STREAM;
     unsigned int verbosity = MIRROR_LOG_DEFAULT_VERBOSITY;
-    hbool_t      custom    = FALSE;
+    bool         custom    = false;
 
     if (info != NULL && info->magic == MIRROR_LOG_INFO_MAGIC) {
         stream    = info->stream;
         verbosity = info->verbosity;
-        custom    = TRUE;
+        custom    = true;
     }
 
     if (level == V_NONE) {
         return;
     }
     else if (level <= verbosity) {
-        if (custom == TRUE && info->prefix[0] != '\0') {
+        if (custom == true && info->prefix[0] != '\0') {
             HDfprintf(stream, "%s", info->prefix);
         }
 
diff --git a/utils/mirror_vfd/mirror_remote.h b/utils/mirror_vfd/mirror_remote.h
index 02cf41ba006..00a09b061b0 100644
--- a/utils/mirror_vfd/mirror_remote.h
+++ b/utils/mirror_vfd/mirror_remote.h
@@ -10,9 +10,8 @@
  * help@hdfgroup.org.                                                        *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-/* Common definitions for "remote" processes for the Mirror VFD.
- *
- * Jacob Smith, 2020-03-06
+/*
+ * Common definitions for "remote" processes for the mirror VFD
  */
 
 #include "hdf5.h"
diff --git a/utils/mirror_vfd/mirror_server.c b/utils/mirror_vfd/mirror_server.c
index 79c9d80c9ee..25ab36ddec0 100644
--- a/utils/mirror_vfd/mirror_server.c
+++ b/utils/mirror_vfd/mirror_server.c
@@ -130,27 +130,6 @@ struct server_run {
     int                     listenfd;
 };
 
-/* ---------------------------------------------------------------------------
- * Function:   mybzero
- *
- * Purpose:    Introduce bzero without neededing it on the system.
- *
- * Programmer: Jacob Smith
- *             2020-03-30
- * ---------------------------------------------------------------------------
- */
-static void
-mybzero(void *dest, size_t size)
-{
-    size_t i = 0;
-    char  *s = NULL;
-    HDassert(dest);
-    s = (char *)dest;
-    for (i = 0; i < size; i++) {
-        *(s + i) = 0;
-    }
-} /* end mybzero() */
-
 /* ---------------------------------------------------------------------------
  * Function:    usage
  *
@@ -190,18 +169,16 @@ usage(void)
 static int
 parse_args(int argc, char **argv, struct op_args *args_out)
 {
-    int i;
-
-    /* preset default values
-     */
+    /* Preset default values */
     args_out->main_port        = DEFAULT_PORT;
     args_out->help             = 0;
     args_out->log_prepend_serv = 1;
     args_out->log_prepend_type = 1;
     args_out->verbosity        = MIRROR_LOG_DEFAULT_VERBOSITY;
-    /* preset empty strings */
-    mybzero(args_out->log_path, PATH_MAX + 1);
-    mybzero(args_out->writer_log_path, PATH_MAX + 1);
+
+    /* Preset empty strings */
+    HDmemset(args_out->log_path, 0, PATH_MAX + 1);
+    HDmemset(args_out->writer_log_path, 0, PATH_MAX + 1);
 
     if (argv == NULL || *argv == NULL) {
         mirror_log(NULL, V_ERR, "invalid argv pointer");
@@ -209,7 +186,7 @@ parse_args(int argc, char **argv, struct op_args *args_out)
     }
 
     /* Loop over arguments after program name */
-    for (i = 1; i < argc; i++) {
+    for (int i = 1; i < argc; i++) {
         if (!HDstrncmp(argv[i], "-h", 3) || !HDstrncmp(argv[i], "--help", 7)) {
             mirror_log(NULL, V_INFO, "found help argument");
             args_out->help = 1;
@@ -569,7 +546,7 @@ handle_requests(struct server_run *run)
             mirror_log(run->loginfo, V_INFO, "probable OPEN xmit received");
 
             H5FD_mirror_xmit_decode_open(xopen, (const unsigned char *)mybuf);
-            if (FALSE == H5FD_mirror_xmit_is_open(xopen)) {
+            if (false == H5FD_mirror_xmit_is_open(xopen)) {
                 mirror_log(run->loginfo, V_WARN, "expected OPEN xmit was malformed");
                 HDclose(connfd);
                 continue;
diff --git a/utils/mirror_vfd/mirror_server_stop.c b/utils/mirror_vfd/mirror_server_stop.c
index 44386bff8ac..c2874b7420d 100644
--- a/utils/mirror_vfd/mirror_server_stop.c
+++ b/utils/mirror_vfd/mirror_server_stop.c
@@ -146,7 +146,7 @@ send_shutdown(struct mshs_opts *opts)
     target_addr.sin_family      = AF_INET;
     target_addr.sin_port        = HDhtons((uint16_t)opts->portno);
     target_addr.sin_addr.s_addr = HDinet_addr(opts->ip);
-    HDmemset(target_addr.sin_zero, '\0', sizeof(target_addr.sin_zero));
+    HDmemset(target_addr.sin_zero, 0, sizeof(target_addr.sin_zero));
 
     if (HDconnect(live_socket, (struct sockaddr *)&target_addr, (socklen_t)sizeof(target_addr)) < 0) {
         HDprintf("ERROR connect() (%d)\n%s\n", errno, HDstrerror(errno));
diff --git a/utils/mirror_vfd/mirror_writer.c b/utils/mirror_vfd/mirror_writer.c
index ad7cd911985..2752121f768 100644
--- a/utils/mirror_vfd/mirror_writer.c
+++ b/utils/mirror_vfd/mirror_writer.c
@@ -154,31 +154,8 @@ struct mirror_writer_opts {
     char    *logpath;
 };
 
-static void mybzero(void *dest, size_t size);
-
 static int do_open(struct mirror_session *session, const H5FD_mirror_xmit_open_t *xmit_open);
 
-/* ---------------------------------------------------------------------------
- * Function:   mybzero
- *
- * Purpose:    Introduce bzero without neededing it on the system.
- *
- * Programmer: Jacob Smith
- *             2020-03-30
- * ---------------------------------------------------------------------------
- */
-static void
-mybzero(void *dest, size_t size)
-{
-    size_t i = 0;
-    char  *s = NULL;
-    HDassert(dest);
-    s = (char *)dest;
-    for (i = 0; i < size; i++) {
-        *(s + i) = 0;
-    }
-} /* end mybzero() */
-
 /* ---------------------------------------------------------------------------
  * Function:    session_init
  *
@@ -217,10 +194,9 @@ session_init(struct mirror_writer_opts *opts)
     session->reply.pub.version       = H5FD_MIRROR_XMIT_CURR_VERSION;
     session->reply.pub.op            = H5FD_MIRROR_OP_REPLY;
     session->reply.pub.session_token = 0;
-    mybzero(session->reply.message, H5FD_MIRROR_STATUS_MESSAGE_MAX);
+    HDmemset(session->reply.message, 0, H5FD_MIRROR_STATUS_MESSAGE_MAX);
 
-    /* Options-derived population
-     */
+    /* Options-derived population */
 
     session->loginfo = mirror_log_init(opts->logpath, "W- ", MIRROR_LOG_DEFAULT_VERBOSITY);
 
@@ -291,25 +267,16 @@ session_start(int socketfd, const H5FD_mirror_xmit_open_t *xmit_open)
 {
     struct mirror_session    *session = NULL;
     struct mirror_writer_opts opts;
-#if 0 /* TODO: behavior option */
-    char logpath[H5FD_MIRROR_XMIT_FILEPATH_MAX] = "";
-#endif
 
     mirror_log(NULL, V_INFO, "session_start()");
 
-    if (FALSE == H5FD_mirror_xmit_is_open(xmit_open)) {
+    if (false == H5FD_mirror_xmit_is_open(xmit_open)) {
         mirror_log(NULL, V_ERR, "invalid OPEN xmit");
         return NULL;
     }
 
-    opts.magic = MW_OPTS_MAGIC;
-#if 0 /* TODO: behavior option */
-    HDsnprintf(logpath, H5FD_MIRROR_XMIT_FILEPATH_MAX, "%s.log",
-            xmit_open->filename);
-    opts.logpath = logpath;
-#else
+    opts.magic   = MW_OPTS_MAGIC;
     opts.logpath = NULL;
-#endif
 
     session = session_init(&opts);
     if (NULL == session) {
@@ -391,7 +358,7 @@ reply_ok(struct mirror_session *session)
     mirror_log(session->loginfo, V_ALL, "reply_ok()");
 
     reply->status = H5FD_MIRROR_STATUS_OK;
-    mybzero(reply->message, H5FD_MIRROR_STATUS_MESSAGE_MAX);
+    HDmemset(reply->message, 0, H5FD_MIRROR_STATUS_MESSAGE_MAX);
     return _xmit_reply(session);
 } /* end reply_ok() */
 
@@ -489,7 +456,7 @@ do_lock(struct mirror_session *session, const unsigned char *xmit_buf)
     }
     mirror_log(session->loginfo, V_INFO, "lock rw: (%d)", xmit_lock.rw);
 
-    if (H5FDlock(session->file, (hbool_t)xmit_lock.rw) < 0) {
+    if (H5FDlock(session->file, (bool)xmit_lock.rw) < 0) {
         mirror_log(session->loginfo, V_ERR, "H5FDlock()");
         reply_error(session, "remote H5FDlock() failure");
         return -1;
@@ -520,7 +487,7 @@ do_open(struct mirror_session *session, const H5FD_mirror_xmit_open_t *xmit_open
     haddr_t  _maxaddr = HADDR_UNDEF;
 
     HDassert(session && (session->magic == MW_SESSION_MAGIC) && xmit_open &&
-             TRUE == H5FD_mirror_xmit_is_open(xmit_open));
+             true == H5FD_mirror_xmit_is_open(xmit_open));
 
     mirror_log(session->loginfo, V_INFO, "do_open()");
 
@@ -664,7 +631,7 @@ do_truncate(struct mirror_session *session)
 
     mirror_log(session->loginfo, V_INFO, "do_truncate()");
 
-    /* default DXPL ID (0), 0 for "FALSE" closing -- both probably unused */
+    /* default DXPL ID (0), 0 for "false" closing -- both probably unused */
     if (H5FDtruncate(session->file, 0, 0) < 0) {
         mirror_log(session->loginfo, V_ERR, "H5FDtruncate()");
         reply_error(session, "remote H5FDtruncate() failure");
@@ -853,7 +820,7 @@ receive_communique(struct mirror_session *session, struct sock_comm *comm)
 
     mirror_log(session->loginfo, V_INFO, "receive_communique()");
 
-    mybzero(comm->raw, comm->raw_size);
+    HDmemset(comm->raw, 0, comm->raw_size);
     comm->recd_die = 0;
 
     mirror_log(session->loginfo, V_INFO, "ready to receive"); /* TODO */