Oess 168 utils mirror vfd (#1444)

* Committing clang-format changes

* Spelling of preceed was corrected to proceed, but should have been
corrected to precede.

* Correct spelling correction of 'preceed' incorrectly to 'proceed'.  It should be 'precede'.

* OESS-168: Remove clang warnings.

* OESS-168: Address @lrknox and @gnuoyd reviews.

* Eliminate clang warnings listed in PR #1310 without adding new ssize_t
variables.

* Committing clang-format changes

* Add H5_ATTR_UNUSED to wait_for_child call.
Remove unneeded casts in mirror_log calls.

* Keep ssize_t in mirror_server.c line 479.

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Hyo-Kyung Lee <hyoklee@hdfgroup.org>

4 files changed, 18 insertions, 21 deletions

diff --git a/utils/mirror_vfd/mirror_remote.c b/utils/mirror_vfd/mirror_remote.c
index f61580d..8bb9544 100644
--- a/utils/mirror_vfd/mirror_remote.c
+++ b/utils/mirror_vfd/mirror_remote.c
@@ -147,7 +147,7 @@ mirror_log_bytes(struct mirror_log_info *info, unsigned int level, size_t n_byte
  * ----------------------------------------------------------------------------
  */
 loginfo_t *
-mirror_log_init(char *path, char *prefix, unsigned int verbosity)
+mirror_log_init(char *path, const char *prefix, unsigned int verbosity)
 {
     loginfo_t *info = NULL;
 
diff --git a/utils/mirror_vfd/mirror_remote.h b/utils/mirror_vfd/mirror_remote.h
index 6f37b0b..9415f7f 100644
--- a/utils/mirror_vfd/mirror_remote.h
+++ b/utils/mirror_vfd/mirror_remote.h
@@ -42,7 +42,7 @@ typedef struct mirror_log_info {
 
 void       mirror_log(loginfo_t *info, unsigned int level, const char *format, ...);
 void       mirror_log_bytes(loginfo_t *info, unsigned int level, size_t n_bytes, const unsigned char *buf);
-loginfo_t *mirror_log_init(char *path, char *prefix, unsigned int verbosity);
+loginfo_t *mirror_log_init(char *path, const char *prefix, unsigned int verbosity);
 int        mirror_log_term(loginfo_t *loginfo);
 
 herr_t run_writer(int socketfd, H5FD_mirror_xmit_open_t *xmit_open);
diff --git a/utils/mirror_vfd/mirror_server.c b/utils/mirror_vfd/mirror_server.c
index f6a8bfe..5381d95 100644
--- a/utils/mirror_vfd/mirror_server.c
+++ b/utils/mirror_vfd/mirror_server.c
@@ -94,14 +94,14 @@
  * ---------------------------------------------------------------------------
  */
 struct op_args {
-    uint32_t magic;
-    int      help;
-    int      main_port;
-    int      verbosity;
-    int      log_prepend_serv;
-    int      log_prepend_type;
-    char     log_path[PATH_MAX + 1];
-    char     writer_log_path[PATH_MAX + 1];
+    uint32_t     magic;
+    int          help;
+    int          main_port;
+    unsigned int verbosity;
+    int          log_prepend_serv;
+    int          log_prepend_type;
+    char         log_path[PATH_MAX + 1];
+    char         writer_log_path[PATH_MAX + 1];
 };
 
 /* ---------------------------------------------------------------------------
@@ -224,7 +224,7 @@ parse_args(int argc, char **argv, struct op_args *args_out)
         } /* end if port */
         else if (!HDstrncmp(argv[i], "--verbosity=", 12)) {
             mirror_log(NULL, V_INFO, "parsing 'verbosity' (%s)", argv[i] + 12);
-            args_out->verbosity = HDatoi(argv[i] + 12);
+            args_out->verbosity = (unsigned int)HDatoi(argv[i] + 12);
         } /* end if verbosity */
         else if (!HDstrncmp(argv[i], "--logpath=", 10)) {
             mirror_log(NULL, V_INFO, "parsing 'logpath' (%s)", argv[i] + 10);
@@ -456,7 +456,7 @@ error:
  * ---------------------------------------------------------------------------
  */
 static void
-wait_for_child(int sig)
+wait_for_child(int H5_ATTR_UNUSED sig)
 {
     while (HDwaitpid(-1, NULL, WNOHANG) > 0)
         ;
@@ -476,7 +476,7 @@ handle_requests(struct server_run *run)
 {
     int              connfd = -1;                       /**/
     char             mybuf[H5FD_MIRROR_XMIT_OPEN_SIZE]; /**/
-    int              ret;                               /* general-purpose error-checking */
+    ssize_t          ret;                               /* general-purpose error-checking */
     int              pid;                               /* process ID of fork */
     struct sigaction sa;
     int              ret_value = 0;
@@ -521,14 +521,13 @@ handle_requests(struct server_run *run)
         /* Read handshake from port connection.
          */
 
-        ret = (int)HDread(connfd, &mybuf, H5FD_MIRROR_XMIT_OPEN_SIZE);
-        if (-1 == ret) {
+        if ((ret = HDread(connfd, &mybuf, H5FD_MIRROR_XMIT_OPEN_SIZE)) < 0) {
             mirror_log(run->loginfo, V_ERR, "read:%d", ret);
             goto error;
         }
         mirror_log(run->loginfo, V_INFO, "received %d bytes", ret);
         mirror_log(run->loginfo, V_ALL, "```");
-        mirror_log_bytes(run->loginfo, V_ALL, ret, (const unsigned char *)mybuf);
+        mirror_log_bytes(run->loginfo, V_ALL, (size_t)ret, (const unsigned char *)mybuf);
         mirror_log(run->loginfo, V_ALL, "```");
 
         /* Respond to handshake message.
diff --git a/utils/mirror_vfd/mirror_writer.c b/utils/mirror_vfd/mirror_writer.c
index d3f12de..5726db5 100644
--- a/utils/mirror_vfd/mirror_writer.c
+++ b/utils/mirror_vfd/mirror_writer.c
@@ -788,8 +788,7 @@ do_write(struct mirror_session *session, const unsigned char *xmit_buf)
      */
     sum_bytes_written = 0;
     do {
-        nbytes_in_packet = HDread(session->sockfd, buf, H5FD_MIRROR_DATA_BUFFER_MAX);
-        if (-1 == nbytes_in_packet) {
+        if ((nbytes_in_packet = HDread(session->sockfd, buf, H5FD_MIRROR_DATA_BUFFER_MAX)) < 0) {
             mirror_log(session->loginfo, V_ERR, "can't read into databuffer");
             reply_error(session, "can't read data buffer");
             return -1;
@@ -798,7 +797,7 @@ do_write(struct mirror_session *session, const unsigned char *xmit_buf)
         mirror_log(session->loginfo, V_INFO, "received %zd bytes", nbytes_in_packet);
         if (HEXDUMP_WRITEDATA) {
             mirror_log(session->loginfo, V_ALL, "DATA:\n```");
-            mirror_log_bytes(session->loginfo, V_ALL, nbytes_in_packet, (const unsigned char *)buf);
+            mirror_log_bytes(session->loginfo, V_ALL, (size_t)nbytes_in_packet, (const unsigned char *)buf);
             mirror_log(session->loginfo, V_ALL, "```");
         }
 
@@ -859,8 +858,7 @@ receive_communique(struct mirror_session *session, struct sock_comm *comm)
 
     mirror_log(session->loginfo, V_INFO, "ready to receive"); /* TODO */
 
-    read_ret = HDread(session->sockfd, comm->raw, H5FD_MIRROR_XMIT_BUFFER_MAX);
-    if (-1 == read_ret) {
+    if ((read_ret = HDread(session->sockfd, comm->raw, H5FD_MIRROR_XMIT_BUFFER_MAX)) < 0) {
         mirror_log(session->loginfo, V_ERR, "read:%zd", read_ret);
         goto error;
     }