From 1231cbba5d3b211625fa093f4d292adbee827d27 Mon Sep 17 00:00:00 2001
From: liquidaty <info@liquidaty.com>
Date: Thu, 22 Feb 2024 12:24:47 -0800
Subject: [PATCH] use zsv_replace_file(), which in turn uses MoveFileW on win,
 instead of rename() (#149)

* use zsv_replace_file(), which in turn uses MoveFileW on win, instead of rename()
---
 app/2db.c      |  4 +++-
 app/mv.c       | 13 +++++++------
 app/prop.c     |  5 +++--
 app/utils/os.c |  2 +-
 4 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/app/2db.c b/app/2db.c
index 51c2d20f..1640b6d7 100644
--- a/app/2db.c
+++ b/app/2db.c
@@ -18,6 +18,7 @@
 
 #include <zsv/utils/mem.h>
 #include <zsv/utils/string.h>
+#include <zsv/utils/os.h>
 
 #include <yajl_helper/yajl_helper.h>
 
@@ -651,9 +652,10 @@ static int zsv_2db_finish(zsv_2db_handle data) {
 
        // rename tmp to target
       unlink(data->opts.db_fn);
-      if(rename(data->db_fn_tmp, data->opts.db_fn)) {
+      if(zsv_replace_file(data->db_fn_tmp, data->opts.db_fn)) {
         fprintf(stderr, "Unable to rename %s to %s\n",
                 data->db_fn_tmp, data->opts.db_fn);
+        zsv_perror(NULL);
         err = 1;
       } else
         fprintf(stderr, "Database %s created\n", data->opts.db_fn);
diff --git a/app/mv.c b/app/mv.c
index 80bcfe7e..9ef0014e 100644
--- a/app/mv.c
+++ b/app/mv.c
@@ -25,6 +25,7 @@
 #include <zsv/utils/dirs.h>
 #include <zsv/utils/file.h>
 #include <zsv/utils/cache.h>
+#include <zsv/utils/os.h>
 
 const char *zsv_mv_usage_msg[] = {
   APPNAME ": move a file and its related cache",
@@ -88,18 +89,18 @@ int ZSV_MAIN_NO_OPTIONS_FUNC(ZSV_COMMAND)(int argc, const char *argv[]) {
         fprintf(stderr, "Use `mv --cache %s <destination>` to move or `rm --cache %s` to remove, then try again\n",
                 dest, dest);
       } else if(move_file && (verbose ? fprintf(stderr, "Renaming files\n") : 1)
-                && rename(source, dest)) {
+                && zsv_replace_file(source, dest)) {
         err = errno;
         fprintf(stderr, "%s -> %s: ", source, dest);
-        perror(NULL);
+        zsv_perror(NULL);
       } else if(zsv_dir_exists((const char *)source_cache_dir) && (verbose ? fprintf(stderr, "Moving caches\n") : 1)
-                && rename((char*)source_cache_dir, (char*)dest_cache_dir)) {
+                && rename(// rename(): not sure will work on Win with NFS dirs...
+                          (char*)source_cache_dir, (char*)dest_cache_dir)
+                ) {
         err = errno;
         fprintf(stderr, "%s -> %s: ", source_cache_dir, dest_cache_dir);
         perror(NULL);
-
-        // try to revert the prior rename
-        if(rename(dest, source)) {
+        if(rename(dest, source)) { // try to revert the prior rename. see above re Win + NFS
           fprintf(stderr, "%s -> %s: ", dest, source);
           perror(NULL);
         }
diff --git a/app/prop.c b/app/prop.c
index 5c29155c..6e8c3576 100644
--- a/app/prop.c
+++ b/app/prop.c
@@ -733,9 +733,10 @@ static int zsv_prop_foreach_copy(struct zsv_foreach_dirent_handle *h, size_t dep
               else {
                 if(h->verbose)
                   fprintf(stderr, "Renaming: %s => %s\n", dest_prop_filepath_tmp, dest_prop_filepath);
-                if(rename(dest_prop_filepath_tmp, dest_prop_filepath)) {
+                if(zsv_replace_file(dest_prop_filepath_tmp, dest_prop_filepath)) {
                   const char *msg = strerror(errno);
-                  fprintf(stderr, "Unable to rename %s -> %s: %s\n", dest_prop_filepath_tmp, dest_prop_filepath, msg ? msg : "Unknown error");
+                  fprintf(stderr, "Unable to rename %s -> %s: ", dest_prop_filepath_tmp, dest_prop_filepath);
+                  zsv_perror(NULL);
                   ctx->err = errno;
                 }
               }
diff --git a/app/utils/os.c b/app/utils/os.c
index 72c1c66d..928c7974 100644
--- a/app/utils/os.c
+++ b/app/utils/os.c
@@ -64,7 +64,7 @@ int zsv_replace_file(const void *src, const void *dest) {
   zsv_win_to_unicode(dest, wdest, ARRAY_SIZE(wdest));
   zsv_win_to_unicode(src, wsrc, ARRAY_SIZE(wsrc));
 
-  if(ReplaceFileW(wdest, wsrc, NULL, REPLACEFILE_IGNORE_MERGE_ERRORS, 0, 0)) // success
+  if(MoveFileExW(wsrc, wdest, MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING | MOVEFILE_WRITE_THROUGH)) // success
     return 0;
 
   if(GetLastError() == 2) // file not found, could be target. use simple rename