feat(stats): receiver-observed created/literal counters (protocol 2.28.0)

- PROTOCOL_VERSION 2.27.0 -> 2.28.0; STATUS_STATS gains literal_bytes and
  the created reg/dir/link/special counters (golden wire updated)
- receiver reports which destination entries it newly created, including
  implicitly-created parent directories below the logical transfer root, so
  Number of created files carries rsync's per-type breakdown
- Literal data is now exact for a delta transfer (receiver counts the literal
  fragments it stored)
- differential-tested vs rsync 3.4.1 for fresh-create, update and delta

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.22)
 
-project(FastFileTransfer VERSION 2.27.0)
+project(FastFileTransfer VERSION 2.28.0)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(CMAKE_C_STANDARD 11)

RSYNC_COMPAT.md

@@ -82,7 +82,7 @@ Every one of those has an entry below with its remaining caveats.
 
 | Flag | Rsync Description | FastSync Status | Notes |
 |------|-------------------|-----------------|-------|
-| `--stats` | Give transfer stats | ⚠️ Caveat | Prints transfer statistics. Protocol 2.25.0 populates the receiver-only counters the sender cannot observe: `Matched data` (a delta basis's reused bytes) and `Number of deleted files` come from the receiver's `STATUS_STATS` report. The sender now tracks the scanned file list per type and only counts regular files the receiver actually stored, so `Number of files` carries rsync's `(reg: X, dir: Y, link: Z, special: W)` breakdown (directories come from the scanner's captured directory list, present for `-a`/`-t`/`-p`), `Number of regular files transferred` excludes symlinks/specials and up-to-date files, `Total file size` includes symlink target lengths, and `Total transferred file size`/`Literal data` count only transferred files — all differential-tested in the sequential and `--threads` paths. **Remaining divergences:** `Number of created files` is the transferred-regular count (FastSync cannot tell which entries the receiver newly created, so on an update where rsync reports 0 created FastSync can report the transferred file) and lacks the type breakdown; a recursive scan that preserves no directory attribute (`-r` without `-t`/`-p`) captures no directory entries, so the `dir:` category is then omitted; `Literal data` is exact for a whole-file transfer but an upper bound for a delta transfer (the sender counts each stored file's whole source size rather than only the literal fragments rsync ships, since it does not measure the delta payload it sends); rsync's per-type breakdown on `Number of deleted files` is not reproduced; and `Total bytes sent`/`received` are FastSync wire bytes framed differently from rsync's, so they are not numerically comparable |
+| `--stats` | Give transfer stats | ⚠️ Caveat | Prints transfer statistics. Protocol 2.25.0 populates the receiver-only counters the sender cannot observe (`Matched data`, `Number of deleted files`) from the receiver's `STATUS_STATS` report; the sender tracks the scanned file list per type so `Number of files` carries rsync's `(reg: X, dir: Y, link: Z, special: W)` breakdown (directories come from the scanner's captured directory list, present for `-a`/`-t`/`-p`), `Number of regular files transferred` excludes symlinks/specials and up-to-date files, `Total file size` includes symlink target lengths, and `Total transferred file size` counts only transferred files. **Protocol 2.28.0 extends `STATUS_STATS`** with receiver-observed `literal_bytes` and the four `created_*` counters: `Number of created files` now carries rsync's `(reg/dir/link/special)` breakdown (the receiver reports which destination entries it newly created, including implicitly-created parent directories below the transfer root) and `Literal data` is exact for a delta transfer (the receiver counts the literal fragments it stored, not the whole source size) — all differential-tested in the sequential and `--threads` paths against rsync 3.4.1 for fresh-create, update and delta shapes. **Remaining divergences:** a recursive scan that preserves no directory attribute (`-r` without `-t`/`-p`) captures no directory entries, so the `dir:` category is then omitted from `Number of files`; rsync's per-type breakdown on `Number of deleted files` is not reproduced; and `Total bytes sent`/`received` are FastSync wire bytes framed differently from rsync's, so they are not numerically comparable |
 | `-h`, `--human-readable` | Human-readable numbers | ✅ Parity | Formats transfer byte and rate counts using rsync's **decimal** (base-1000) units, matching rsync `-h` (e.g. `1.23M`), not binary units. **A lone `-h` with no transfer arguments prints help instead** (protocol 2.26.0), matching the rsync idiom; `-h` alongside a transfer remains human-readable |
 | `-i`, `--itemize-changes` | Per-file change summary | ✅ Parity | Prints rsync-style `>f+++++++++` lines to stdout only for files actually sent (also under `-j`/`--threads`); unchanged files print nothing, matching single-`-i` behavior |
 | `--progress` | Show progress | ⚠️ Caveat | Protocol 2.25.0 prints rsync-style per-file progress blocks (percent, transferred/total bytes, rate, elapsed, `(xfr#N, to-chk=M/T)`) fed by the receiver's `STATUS_STATS`, in both the sequential and `--threads` send paths. FastSync now also prints rsync's leading `./` transfer-root line and counts that root entry in the `to-chk` denominator, so a **single-file transfer's name lines and deterministic frames are byte-identical to rsync** (differential test). **Remaining divergences:** for a multi-directory tree rsync prints a per-directory name line and its `to-chk` denominator includes every directory/symlink/special entry; FastSync's streaming scan emits only file-name lines and counts just the root plus transferred files (a full flist pre-count would be needed), and the rate/ETA are wall-clock dependent |

src/client/client_send.c

@@ -93,12 +93,11 @@ static const char* stats_bytes(const Config* config, unsigned long long bytes, c
   return buffer;
 }
 
-/* Build rsync's `Number of files` parenthetical: each non-zero category, in
+/* Build rsync's per-type parenthetical: each non-zero category, in
-   reg/dir/link/special order.  Empty when the flist counted nothing. */
+   reg/dir/link/special order.  Empty when every count is zero. */
-static void stats_type_breakdown(const TransferStats* stats, char* out, size_t out_size) {
+static void type_breakdown(unsigned long long reg, unsigned long long dir, unsigned long long link,
-  unsigned long long total =
+                           unsigned long long special, char* out, size_t out_size) {
-      stats->flist_reg + stats->flist_dir + stats->flist_link + stats->flist_special;
+  if (reg + dir + link + special == 0) {
-  if (total == 0) {
     out[0] = '\0';
     return;
   }
@@ -107,10 +106,7 @@ static void stats_type_breakdown(const TransferStats* stats, char* out, size_t o
   const struct {
     const char* name;
     unsigned long long count;
-  } parts[4] = {{"reg", stats->flist_reg},
+  } parts[4] = {{"reg", reg}, {"dir", dir}, {"link", link}, {"special", special}};
-                {"dir", stats->flist_dir},
-                {"link", stats->flist_link},
-                {"special", stats->flist_special}};
   bool first = true;
   for (size_t i = 0; i < 4; i++) {
     if (parts[i].count == 0)
@@ -127,6 +123,12 @@ static void stats_type_breakdown(const TransferStats* stats, char* out, size_t o
   out[used] = '\0';
 }
 
+/* Build rsync's `Number of files` parenthetical from the scan's flist counts. */
+static void stats_type_breakdown(const TransferStats* stats, char* out, size_t out_size) {
+  type_breakdown(stats->flist_reg, stats->flist_dir, stats->flist_link, stats->flist_special, out,
+                 out_size);
+}
+
 /* Print the rsync `--stats` block on stdout.  The source-side flist and
    transferred counters come from `stats` (filled while scanning/sending), the
    receiver-only counters from the STATUS_STATS frame, and the wire byte totals
@@ -151,6 +153,7 @@ static void report_transfer_stats(const Config* config, const TransferStats* sta
   char total_buffer[32];
   char transferred_buffer[32];
   char literal_buffer[32];
+  char matched_buffer[32];
   char sent_buffer[32];
   char recv_buffer[32];
   char rate_buffer[32] = {0};
@@ -159,8 +162,15 @@ static void report_transfer_stats(const Config* config, const TransferStats* sta
       stats_bytes(config, stats->total_file_size, total_buffer, sizeof(total_buffer));
   const char* transferred = stats_bytes(config, stats->transferred_file_size, transferred_buffer,
                                         sizeof(transferred_buffer));
-  const char* literal =
+  /* Protocol 2.28.0: the receiver reports the bytes it literally stored, which
-      stats_bytes(config, stats->literal_data, literal_buffer, sizeof(literal_buffer));
+     is exact for a delta transfer (the sender's own literal_data counts each
+     stored file's whole source size and is only an upper bound).  Fall back to
+     the sender total when the receiver reported no delta/literal accounting
+     (e.g. a local no-server path). */
+  unsigned long long literal_bytes = (recv->literal_bytes != 0 || recv->matched_data != 0)
+                                         ? recv->literal_bytes
+                                         : stats->literal_data;
+  const char* literal = stats_bytes(config, literal_bytes, literal_buffer, sizeof(literal_buffer));
   const char* sent_s = stats_bytes(config, sent, sent_buffer, sizeof(sent_buffer));
   const char* recv_s = stats_bytes(config, received, recv_buffer, sizeof(recv_buffer));
   const char* rate_str = rate_buffer;
@@ -177,21 +187,30 @@ static void report_transfer_stats(const Config* config, const TransferStats* sta
   stats_type_breakdown(stats, breakdown, sizeof(breakdown));
   unsigned long long flist_total =
       stats->flist_reg + stats->flist_dir + stats->flist_link + stats->flist_special;
+  char created_breakdown[128];
+  type_breakdown(recv->created_reg, recv->created_dir, recv->created_link, recv->created_special,
+                 created_breakdown, sizeof(created_breakdown));
+  unsigned long long created_total =
+      recv->created_reg + recv->created_dir + recv->created_link + recv->created_special;
   printf("\n");
   if (breakdown[0] != '\0')
     printf("Number of files: %llu %s\n", flist_total, breakdown);
   else
     printf("Number of files: %llu\n", flist_total);
-  /* FastSync cannot tell which entries the receiver newly created, so it
+  /* Protocol 2.28.0: the receiver reports which destination entries it newly
-     reports the transferred regular files (which are created on a fresh
+     created, split by type, so this line matches rsync exactly. */
-     destination).  See RSYNC_COMPAT.md for the documented residual. */
+  if (created_breakdown[0] != '\0')
-  printf("Number of created files: %llu\n", stats->transferred_regular);
+    printf("Number of created files: %llu %s\n", created_total, created_breakdown);
+  else
+    printf("Number of created files: %llu\n", created_total);
   printf("Number of deleted files: %llu\n", recv->deleted_files);
   printf("Number of regular files transferred: %llu\n", stats->transferred_regular);
   printf("Total file size: %s bytes\n", total);
   printf("Total transferred file size: %s bytes\n", transferred);
   printf("Literal data: %s bytes\n", literal);
-  printf("Matched data: %llu bytes\n", recv->matched_data);
+  const char* matched =
+      stats_bytes(config, recv->matched_data, matched_buffer, sizeof(matched_buffer));
+  printf("Matched data: %s bytes\n", matched);
   printf("File list size: 0\n");
   printf("File list generation time: 0.000 seconds\n");
   printf("File list transfer time: 0.000 seconds\n");

src/server/receiver.c

@@ -613,6 +613,8 @@ typedef struct {
 static bool receiver_save_file(File* file, void* context_pointer) {
   ReceiverSaveContext* context = context_pointer;
   FileSaveResult result = FILE_SAVE_ERROR;
+  bool created = false;
+  unsigned created_dirs = 0;
   if (context->config->dry_run) {
     /* Defense in depth: a dry-run receiver mutates nothing even if a data
        frame reaches the sink (the sender is not supposed to send one). */
@@ -622,12 +624,17 @@ static bool receiver_save_file(File* file, void* context_pointer) {
        --remove-source-files sender keeps its source. */
     result = FILE_SAVE_SKIPPED;
   } else {
-    result = file_save_to_disk_full(context->config->receive_root_directory, file, context->config);
+    result = file_save_to_disk_full_ex(context->config->receive_root_directory, file,
+                                       context->config, &created, &created_dirs);
   }
   /* Wire-stats tally: bytes reconstructed from the basis file (delta matches)
      count as matched data in the end-of-transfer report. */
   if (result != FILE_SAVE_ERROR && file->matched_bytes > 0)
     context->stats.matched_data += file->matched_bytes;
+  /* Protocol 2.28.0: receiver-observed literal bytes and the created-entry
+     breakdown (regular/dir/link/special) for the `--stats` report. */
+  if (result == FILE_SAVE_WRITTEN)
+    receiver_stats_note_saved(&context->stats, file, created, created_dirs);
   /* A directory's metadata is deferred, never applied inline: collect it now
      and apply it at the end.  -O/--omit-dir-times and --preserve_perms/-times
      are honored by dir_metadata_list_apply's caller (see

src/server/receiver_pipeline.c

@@ -247,12 +247,23 @@ int write_thread(void* pipeline_context) {
     }
     size_t file_bytes = file->data ? file->data->size : 0;
     FileSaveResult result = FILE_SAVE_SKIPPED;
+    bool created = false;
+    unsigned created_dirs = 0;
     /* Server-contacting --dry-run: never write.  The receiver thread does not
        enqueue anything on the dry-run path, but this keeps the writer thread
        provably mutation-free if a data frame ever reached it. */
     bool dry_run = context->config->dry_run;
     if (save_to_disk && !dry_run) {
-      result = file_save_to_disk_full(root_directory, file, context->config);
+      result =
+          file_save_to_disk_full_ex(root_directory, file, context->config, &created, &created_dirs);
+      if (result == FILE_SAVE_WRITTEN) {
+        /* Protocol 2.28.0: fold the receiver-observed literal bytes and the
+           created-entry type into the shared stats block under its mutex (the
+           receive thread also writes stats.matched_data). */
+        mtx_lock(&context->mutex);
+        receiver_stats_note_saved(&context->stats, file, created, created_dirs);
+        mtx_unlock(&context->mutex);
+      }
       if (result == FILE_SAVE_ERROR) {
         file_destroy(file);
         pipeline_context_receiver_note_bytes_released(context, file_bytes);

src/shared/config.h

@@ -82,7 +82,7 @@ typedef struct {
 typedef enum SuperMode { SUPER_MODE_AUTO = 0, SUPER_MODE_ON = 1, SUPER_MODE_OFF = 2 } SuperMode;
 
 /* ===========================================================================
- * Config wire-field table (single source of truth for protocol 2.27.0).
+ * Config wire-field table (single source of truth for protocol 2.28.0).
  *
  * Every field below crosses the wire.  The table is the ONLY place a
  * serialized field is named: config.h expands CONFIG_WIRE_FIELDS() to declare
@@ -1006,7 +1006,20 @@ typedef struct Config {
  * the sender can print rsync's `deleting PATH` lines for a real deletion.  No
  * change to the fixed STATUS_STATS record itself; only a new trailing config
  * bool, which still requires the version bump for the strict lockstep. */
-#define PROTOCOL_VERSION "2.27.0"
+/* (8) --stats receiver-observed counters (protocol 2.28.0): the fixed
+ * STATUS_STATS record grows from three counters to eight.  The receiver now
+ * reports the bytes it literally stored (`literal_data`) and the count of
+ * destination entries it newly CREATED, split by type
+ * (reg/dir/link/special), so the sender can print rsync's exact
+ * `Number of created files: N (reg: X, dir: Y, link: Z, special: W)` line and
+ * an exact `Literal data` total even for delta transfers.  The config-frame
+ * LAYOUT is unchanged (no new config field), but the STATUS_STATS body grows,
+ * so a 2.27 peer that does not consume the five new fixed-width counters would
+ * desynchronize on the trailing would-delete path list; the strict
+ * same-version handshake (config_receive rejects a mismatched version before
+ * parsing anything else) keeps mixed deployments from ever reaching that
+ * state. */
+#define PROTOCOL_VERSION "2.28.0"
 #define DEFAULT_CHUNK_SIZE (10 * 1024 * 1024)
 /* Upper bound on total basis-dir entries (rsync caps --link-dest at 20). */
 #define MAX_BASIS_DIRS 64

src/shared/file.c

@@ -187,6 +187,7 @@ File* file_create(const char* path) {
   file->xattrs = NULL;
   file->dest_state = (OutputDestState){0};
   file->matched_bytes = 0;
+  file->literal_bytes = 0;
   return file;
 }
 
@@ -614,6 +615,103 @@ static int open_dir_beneath_root(const char* resolved, const char* root) {
 }
 
 int file_open_secure_parent(const char* path, char** leaf_out, bool create_dirs) {
+  return file_open_secure_parent_counted(path, leaf_out, create_dirs, NULL, NULL);
+}
+
+/* The logical transfer root expressed in the same coordinate as the secure
+ * parent walk's `rel_buf` (relative to the authorized root, with a leading
+ * '/'), used as the floor at or below which a created directory is a real
+ * file-list entry.  The on-disk transfer root is the receive root joined to the
+ * wire path; the mirror scaffolding above it (the absolute source path below
+ * the destination root) is not an rsync entry.  Returns an allocated string or
+ * NULL (count every created component). */
+static char* transfer_root_floor(const Config* config) {
+  if (!config || !config->send_directory || config->send_directory[0] == '\0')
+    return NULL;
+  const char* spec = config->send_directory;
+  const char* after = spec;
+  if (spec[0] == '.' && spec[1] == '/') {
+    after = spec + 2;
+  } else {
+    const char* cut = strstr(spec, "/./");
+    if (cut)
+      after = cut + 3;
+  }
+  while (*after == '/')
+    after++;
+  char* wire_root = str_dup(after);
+  if (!wire_root)
+    return NULL;
+  size_t wlen = strlen(wire_root);
+  while (wlen > 0 && wire_root[wlen - 1] == '/')
+    wire_root[--wlen] = '\0';
+  if (wlen == 0) {
+    free(wire_root);
+    return NULL;
+  }
+  char* disk_root = config->receive_root_directory
+                        ? path_cat(config->receive_root_directory, wire_root)
+                        : str_dup(wire_root);
+  free(wire_root);
+  if (!disk_root)
+    return NULL;
+  const char* root_path = utils_get_authorized_root_path();
+  const char* floor = disk_root;
+  if (root_path && root_path[0] == '/') {
+    size_t rl = strlen(root_path);
+    while (rl > 0 && root_path[rl - 1] == '/')
+      rl--;
+    if (strncmp(disk_root, root_path, rl) == 0 && (disk_root[rl] == '/' || disk_root[rl] == '\0'))
+      floor = disk_root + rl;
+  }
+  while (*floor == '/')
+    floor++;
+  char* out = str_dup(floor);
+  free(disk_root);
+  if (!out)
+    return NULL;
+  if (out[0] == '\0') {
+    free(out);
+    return NULL;
+  }
+  return out;
+}
+
+/* A created parent component counts toward `Number of created files` only when
+ * its receive-root-relative path is at or below the logical transfer root
+ * (`count_floor`).  The transfer root itself corresponds to rsync's `.` entry
+ * (created on a fresh destination, pre-existing otherwise); the mirror
+ * scaffolding above it is FastSync's absolute-path layout, not an rsync entry. */
+static bool created_dir_counts(const char* count_floor, const char* rel_buf,
+                               const char* component) {
+  if (!count_floor)
+    return true;
+  char candidate[PATH_MAX];
+  int n = snprintf(candidate, sizeof(candidate), "%s/%s", rel_buf, component);
+  if (n < 0 || (size_t)n >= sizeof(candidate))
+    return false;
+  const char* cand = candidate;
+  while (*cand == '/')
+    cand++;
+  size_t fl = strlen(count_floor);
+  if (strncmp(cand, count_floor, fl) != 0)
+    return false;
+  return cand[fl] == '\0' || cand[fl] == '/';
+}
+
+/* Public wrapper for the receiver's created-directory accounting: the logical
+ * transfer root expressed receive-root-relative, or NULL when the wire paths
+ * carry no mirror scaffolding above it (--relative and --files-from, whose
+ * paths are already relative to the transfer root).  The caller frees a
+ * non-NULL result. */
+char* file_transfer_root_floor(const Config* config) {
+  if (!config || config->relative || config->files_from_set != NULL)
+    return NULL;
+  return transfer_root_floor(config);
+}
+
+int file_open_secure_parent_counted(const char* path, char** leaf_out, bool create_dirs,
+                                    unsigned* dirs_created, const char* count_floor) {
   char* copy = str_dup(path);
   if (!copy)
     return -1;
@@ -674,6 +772,14 @@ int file_open_secure_parent(const char* path, char** leaf_out, bool create_dirs)
       if (next < 0 && create_dirs && errno == ENOENT) {
         bool created = mkdirat(fd, component, (mode_t)(0777 & ~(mode_t)file_process_umask())) == 0;
         if (created || errno == EEXIST) {
+          /* Protocol 2.28.0: only directories the logical file list would
+             create count toward `Number of created files`; the mirror
+             scaffolding above the transfer root (e.g. the absolute source path
+             under the destination root) is not an rsync entry.  `count_floor`
+             is a receive-root-relative prefix that must be reached before a
+             created component is counted. */
+          if (created && dirs_created && created_dir_counts(count_floor, rel_buf, component))
+            (*dirs_created)++;
           /* P7 Wave E: --copy-as owns EVERY entry, including the intermediate
              directories this walk creates implicitly.  Its target ids are a
              global policy, so they are available here without per-entry source
@@ -1026,15 +1132,14 @@ static void restore_extra_fd(int fd, const FileMetadata* metadata, const FileXat
   }
 }
 
-static bool file_to_disk_secure_impl(const char* path, const void* data,
+static bool
-                                     unsigned long long data_size, bool inplace, bool sparse,
+file_to_disk_secure_impl(const char* path, const void* data, unsigned long long data_size,
-                                     bool preallocate, const FileMetadata* metadata,
+                         bool inplace, bool sparse, bool preallocate, const FileMetadata* metadata,
-                                     FileAttrPolicy policy, bool update, bool no_replace,
+                         FileAttrPolicy policy, bool update, bool no_replace, bool use_fsync,
-                                     bool use_fsync, const char* temp_dir,
+                         const char* temp_dir, const FileXattrList* xattrs, bool fake_super,
-                                     const FileXattrList* xattrs, bool fake_super,
+                         bool keep_partial, unsigned* dirs_created, const char* count_floor) {
-                                     bool keep_partial) {
   char* leaf = NULL;
-  int dirfd = file_open_secure_parent(path, &leaf, true);
+  int dirfd = file_open_secure_parent_counted(path, &leaf, true, dirs_created, count_floor);
   if (dirfd < 0)
     return false;
   int fd = -1;
@@ -1325,7 +1430,7 @@ static bool file_to_disk_secure_impl(const char* path, const void* data,
                 "non-atomic copy into the destination directory");
     return file_to_disk_secure_impl(path, data, data_size, inplace, sparse, preallocate, metadata,
                                     policy, update, no_replace, use_fsync, NULL, xattrs, fake_super,
-                                    keep_partial);
+                                    keep_partial, dirs_created, count_floor);
   }
   return ok;
 }
@@ -1334,7 +1439,8 @@ bool file_to_disk_secure(const char* path, const void* data, unsigned long long
                          bool inplace, bool sparse, bool preallocate, const FileMetadata* metadata,
                          FileAttrPolicy policy, const char* temp_dir) {
   return file_to_disk_secure_impl(path, data, data_size, inplace, sparse, preallocate, metadata,
-                                  policy, false, false, false, temp_dir, NULL, false, false);
+                                  policy, false, false, false, temp_dir, NULL, false, false, NULL,
+                                  NULL);
 }
 
 bool file_to_disk_secure_update(const char* path, const void* data, unsigned long long data_size,
@@ -1342,7 +1448,8 @@ bool file_to_disk_secure_update(const char* path, const void* data, unsigned lon
                                 const FileMetadata* metadata, FileAttrPolicy policy,
                                 const char* temp_dir) {
   return file_to_disk_secure_impl(path, data, data_size, inplace, sparse, preallocate, metadata,
-                                  policy, true, false, false, temp_dir, NULL, false, false);
+                                  policy, true, false, false, temp_dir, NULL, false, false, NULL,
+                                  NULL);
 }
 
 bool file_to_disk_secure_with_fsync(const char* path, const void* data,
@@ -1350,7 +1457,8 @@ bool file_to_disk_secure_with_fsync(const char* path, const void* data,
                                     bool preallocate, const FileMetadata* metadata,
                                     FileAttrPolicy policy, bool use_fsync, const char* temp_dir) {
   return file_to_disk_secure_impl(path, data, data_size, inplace, sparse, preallocate, metadata,
-                                  policy, false, false, use_fsync, temp_dir, NULL, false, false);
+                                  policy, false, false, use_fsync, temp_dir, NULL, false, false,
+                                  NULL, NULL);
 }
 
 bool file_to_disk_secure_no_replace(const char* path, const void* data,
@@ -1358,7 +1466,8 @@ bool file_to_disk_secure_no_replace(const char* path, const void* data,
                                     const FileMetadata* metadata, FileAttrPolicy policy,
                                     const char* temp_dir) {
   return file_to_disk_secure_impl(path, data, data_size, false, sparse, preallocate, metadata,
-                                  policy, false, true, false, temp_dir, NULL, false, false);
+                                  policy, false, true, false, temp_dir, NULL, false, false, NULL,
+                                  NULL);
 }
 
 /* Receiver write-path variant that also applies the per-file xattrs (-X/-A)
@@ -1371,9 +1480,21 @@ bool file_to_disk_secure_attrs(const char* path, const void* data, unsigned long
                                const FileMetadata* metadata, FileAttrPolicy policy, bool update,
                                bool no_replace, bool use_fsync, const FileXattrList* xattrs,
                                bool fake_super, bool keep_partial, const char* temp_dir) {
+  return file_to_disk_secure_attrs_counted(path, data, data_size, inplace, sparse, preallocate,
+                                           metadata, policy, update, no_replace, use_fsync, xattrs,
+                                           fake_super, keep_partial, temp_dir, NULL, NULL);
+}
+
+bool file_to_disk_secure_attrs_counted(const char* path, const void* data,
+                                       unsigned long long data_size, bool inplace, bool sparse,
+                                       bool preallocate, const FileMetadata* metadata,
+                                       FileAttrPolicy policy, bool update, bool no_replace,
+                                       bool use_fsync, const FileXattrList* xattrs, bool fake_super,
+                                       bool keep_partial, const char* temp_dir,
+                                       unsigned* dirs_created, const char* count_floor) {
   return file_to_disk_secure_impl(path, data, data_size, inplace, sparse, preallocate, metadata,
                                   policy, update, no_replace, use_fsync, temp_dir, xattrs,
-                                  fake_super, keep_partial);
+                                  fake_super, keep_partial, dirs_created, count_floor);
 }
 
 /* Atomic --link-dest install.  The destination is replaced (via a temporary
@@ -1396,11 +1517,12 @@ static bool file_to_disk_secure_link_impl(const char* path, const char* basis_pa
                                           bool preallocate, const FileMetadata* metadata,
                                           FileAttrPolicy policy, bool use_fsync,
                                           const FileXattrList* xattrs, bool fake_super,
-                                          const char* temp_dir) {
+                                          const char* temp_dir, unsigned* dirs_created,
+                                          const char* count_floor) {
   if (!path || !basis_path)
     return false;
   char* leaf = NULL;
-  int dirfd = file_open_secure_parent(path, &leaf, true);
+  int dirfd = file_open_secure_parent_counted(path, &leaf, true, dirs_created, count_floor);
   if (dirfd < 0)
     return false;
 
@@ -1483,9 +1605,9 @@ static bool file_to_disk_secure_link_impl(const char* path, const char* basis_pa
     free(leaf);
     /* The basis file could not be linked in (missing, cross-device, refused
        by the filesystem).  Write a byte-identical local copy instead. */
-    return file_to_disk_secure_attrs(path, data, data_size, false, false, preallocate, metadata,
+    return file_to_disk_secure_attrs_counted(
-                                     policy, false, false, use_fsync, xattrs, fake_super, false,
+        path, data, data_size, false, false, preallocate, metadata, policy, false, false, use_fsync,
-                                     temp_dir);
+        xattrs, fake_super, false, temp_dir, dirs_created, count_floor);
   }
 
   if (scratch_dirfd >= 0)
@@ -1500,7 +1622,7 @@ bool file_to_disk_secure_link(const char* path, const char* basis_path, const vo
                               const FileMetadata* metadata, FileAttrPolicy policy, bool use_fsync,
                               const char* temp_dir) {
   return file_to_disk_secure_link_impl(path, basis_path, data, data_size, preallocate, metadata,
-                                       policy, use_fsync, NULL, false, temp_dir);
+                                       policy, use_fsync, NULL, false, temp_dir, NULL, NULL);
 }
 
 bool file_to_disk_secure_link_attrs(const char* path, const char* basis_path, const void* data,
@@ -1508,8 +1630,21 @@ bool file_to_disk_secure_link_attrs(const char* path, const char* basis_path, co
                                     const FileMetadata* metadata, FileAttrPolicy policy,
                                     bool use_fsync, const FileXattrList* xattrs, bool fake_super,
                                     const char* temp_dir) {
+  return file_to_disk_secure_link_attrs_counted(path, basis_path, data, data_size, preallocate,
+                                                metadata, policy, use_fsync, xattrs, fake_super,
+                                                temp_dir, NULL, NULL);
+}
+
+bool file_to_disk_secure_link_attrs_counted(const char* path, const char* basis_path,
+                                            const void* data, unsigned long long data_size,
+                                            bool preallocate, const FileMetadata* metadata,
+                                            FileAttrPolicy policy, bool use_fsync,
+                                            const FileXattrList* xattrs, bool fake_super,
+                                            const char* temp_dir, unsigned* dirs_created,
+                                            const char* count_floor) {
   return file_to_disk_secure_link_impl(path, basis_path, data, data_size, preallocate, metadata,
-                                       policy, use_fsync, xattrs, fake_super, temp_dir);
+                                       policy, use_fsync, xattrs, fake_super, temp_dir,
+                                       dirs_created, count_floor);
 }
 
 bool file_write_to_disk(const char* path, const void* data, unsigned long long data_size,

src/shared/file.h

@@ -87,6 +87,11 @@ bool file_path_exists_secure(const char* path);
 bool file_stat_secure(const char* path, struct stat* st);
 bool file_destination_is_newer_secure(const char* path, const FileMetadata* metadata);
 int file_open_secure_parent(const char* path, char** leaf_out, bool create_dirs);
+/* Protocol 2.28.0 variant: also increments *dirs_created for every missing
+ * parent directory this walk creates that lies strictly below `count_floor`
+ * (a receive-root-relative path, or NULL to count all of them). */
+int file_open_secure_parent_counted(const char* path, char** leaf_out, bool create_dirs,
+                                    unsigned* dirs_created, const char* count_floor);
 bool file_ensure_directory_secure(const char* path);
 bool file_directory_exists_secure(const char* path);
 bool file_rename_secure(const char* old_path, const char* new_path);
@@ -158,5 +163,27 @@ bool file_to_disk_secure_link_attrs(const char* path, const char* basis_path, co
                                     const FileMetadata* metadata, FileAttrPolicy policy,
                                     bool use_fsync, const FileXattrList* xattrs, bool fake_super,
                                     const char* temp_dir);
+/* Protocol 2.28.0 receiver-stat variants: like the two above but additionally
+ * report through `dirs_created` (when non-NULL) how many parent directories the
+ * confined secure walk had to create that lie strictly below `count_floor` (a
+ * receive-root-relative prefix, or NULL for all).  Used to reproduce rsync's
+ * `Number of created files` directory count on a fresh destination. */
+bool file_to_disk_secure_attrs_counted(const char* path, const void* data,
+                                       unsigned long long data_size, bool inplace, bool sparse,
+                                       bool preallocate, const FileMetadata* metadata,
+                                       FileAttrPolicy policy, bool update, bool no_replace,
+                                       bool use_fsync, const FileXattrList* xattrs, bool fake_super,
+                                       bool keep_partial, const char* temp_dir,
+                                       unsigned* dirs_created, const char* count_floor);
+bool file_to_disk_secure_link_attrs_counted(const char* path, const char* basis_path,
+                                            const void* data, unsigned long long data_size,
+                                            bool preallocate, const FileMetadata* metadata,
+                                            FileAttrPolicy policy, bool use_fsync,
+                                            const FileXattrList* xattrs, bool fake_super,
+                                            const char* temp_dir, unsigned* dirs_created,
+                                            const char* count_floor);
+/* The logical transfer root expressed receive-root-relative, or NULL when the
+ * wire paths carry no mirror scaffolding above it.  Caller frees non-NULL. */
+char* file_transfer_root_floor(const Config* config);
 
 #endif

src/shared/file_receive.c

@@ -37,7 +37,12 @@
 #define MANIFEST_ENTRY_OVERHEAD (sizeof(char*) + 16)
 
 bool file_save_to_disk(const char* root_directory, const File* file, const Config* config) {
-  return file_save_to_disk_full(root_directory, file, config) != FILE_SAVE_ERROR;
+  return file_save_to_disk_full_ex(root_directory, file, config, NULL, NULL) != FILE_SAVE_ERROR;
+}
+
+FileSaveResult file_save_to_disk_full(const char* root_directory, const File* file,
+                                      const Config* config) {
+  return file_save_to_disk_full_ex(root_directory, file, config, NULL, NULL);
 }
 
 /* --delay-updates receiver path: write the file into a private staging tree
@@ -208,13 +213,14 @@ static FileSaveResult hardlink_sibling_absent_first(const char* destination_path
    --existing/--ignore-existing/--update policies are decided against the final
    destination like every normal write. */
 static FileSaveResult file_save_hardlink_sibling(const char* root_directory, const File* file,
-                                                 const Config* config) {
+                                                 const Config* config, bool* created) {
   Config* cfg = (Config*)config;
   if (!root_directory || !file || !file->path || !file->hardlink_target)
     return FILE_SAVE_ERROR;
   char* destination_path = path_cat(root_directory, file->path);
   if (!destination_path)
     return FILE_SAVE_ERROR;
+  bool existed = file_path_exists_secure(destination_path);
 
   if (cfg->existing && !file_path_exists_secure(destination_path)) {
     free(destination_path);
@@ -278,6 +284,8 @@ static FileSaveResult file_save_hardlink_sibling(const char* root_directory, con
     free(staged_first);
     free(staged_sibling);
     free(destination_path);
+    if (ok && created && !existed)
+      *created = true;
     return ok ? FILE_SAVE_WRITTEN : FILE_SAVE_ERROR;
   }
 
@@ -324,6 +332,8 @@ static FileSaveResult file_save_hardlink_sibling(const char* root_directory, con
   free(content);
   free(first_disk);
   free(destination_path);
+  if (ok && created && !existed)
+    *created = true;
   return ok ? FILE_SAVE_WRITTEN : FILE_SAVE_ERROR;
 }
 
@@ -360,7 +370,7 @@ bool file_special_rdev_valid(int32_t major, int32_t minor, mode_t mode) {
  * non-device entry must carry an empty rdev.
  */
 static FileSaveResult file_save_special_to_disk(const char* root_directory, const File* file,
-                                                const Config* config) {
+                                                const Config* config, bool* created) {
   /* The empty-path and structural checks stay unconditional; the redundant
      ".." list-path re-check is skipped under --trust-sender exactly like the
      receive layer (confinement is deferred to the secure parent walk below,
@@ -412,6 +422,7 @@ static FileSaveResult file_save_special_to_disk(const char* root_directory, cons
   char* destination = path_cat(root_directory, file->path);
   if (!destination)
     return FILE_SAVE_ERROR;
+  bool existed = file_path_exists_secure(destination);
   char* leaf = NULL;
   int parent_fd = file_open_secure_parent(destination, &leaf, true);
   if (parent_fd < 0) {
@@ -532,6 +543,8 @@ static FileSaveResult file_save_special_to_disk(const char* root_directory, cons
   free(destination);
   /* A failed required --copy-as ownership marks the node as failed; every other
    * identity policy stays best-effort. */
+  if (owner_ok && created && !existed)
+    *created = true;
   return owner_ok ? FILE_SAVE_WRITTEN : FILE_SAVE_ERROR;
 }
 
@@ -610,8 +623,13 @@ static FileSaveResult file_save_write_device(const char* root_directory, const F
   return ok ? FILE_SAVE_WRITTEN : FILE_SAVE_SKIPPED;
 }
 
-FileSaveResult file_save_to_disk_full(const char* root_directory, const File* file,
+FileSaveResult file_save_to_disk_full_ex(const char* root_directory, const File* file,
-                                      const Config* config) {
+                                         const Config* config, bool* created,
+                                         unsigned* created_dirs) {
+  if (created)
+    *created = false;
+  if (created_dirs)
+    *created_dirs = 0;
   /* Central no-mutation guard: a server-contacting --dry-run (or a local batch
      apply that somehow carries dry_run) must never touch the destination, no
      matter which caller reached this primitive.  The per-caller guards remain,
@@ -658,7 +676,7 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
   /* Device/special node (--devices/--specials): recreate the node instead of
      writing content (privilege-gated, confined, rdev-validated). */
   if (file->is_special)
-    return file_save_special_to_disk(root_directory, file, config);
+    return file_save_special_to_disk(root_directory, file, config, created);
   /* --write-devices: write straight into an existing device node.  Writing
      into a device is a super-user activity, so --no-super must suppress it just
      like device-node creation; the default AUTO/--super attempt it (the wide
@@ -689,6 +707,7 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
     char* dir_path = path_cat(root_directory, file->path);
     if (!dir_path)
       return FILE_SAVE_ERROR;
+    bool dir_existed = file_path_exists_secure(dir_path);
     bool ok = file_ensure_directory_secure(dir_path);
     /* P7 Wave E: apply the negotiated ownership to the directory ITSELF (not
        just the files inside it).  --copy-as and every explicit identity policy
@@ -712,6 +731,8 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
       free(leaf);
     }
     free(dir_path);
+    if (ok && created && !dir_existed)
+      *created = true;
     return ok ? FILE_SAVE_WRITTEN : FILE_SAVE_ERROR;
   }
 
@@ -728,6 +749,7 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
     char* link_path = path_cat(root_directory, file->path);
     if (!link_path)
       return FILE_SAVE_ERROR;
+    bool link_existed = file_path_exists_secure(link_path);
     /* The link value is stored verbatim (rsync -l parity: absolute and
        ".."-bearing targets are preserved; the scanner's --safe-links /
        --copy-unsafe-links decide which links are sent at all).  --munge-links
@@ -768,6 +790,8 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
       ok = file_restore_symlink_metadata(link_path, file->metadata, link_policy,
                                          config->omit_link_times);
     }
+    if (ok && created && !link_existed)
+      *created = true;
     free(link_path);
     return ok ? FILE_SAVE_WRITTEN : FILE_SAVE_ERROR;
   }
@@ -777,7 +801,7 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
      byte-identical copy of) the group's first member.  Handled entirely here,
      before the normal data-write paths (which would create an empty file). */
   if (file->link_group != 0 && !file->link_first && file->hardlink_target != NULL) {
-    return file_save_hardlink_sibling(root_directory, file, config);
+    return file_save_hardlink_sibling(root_directory, file, config, created);
   }
 
   /* These options arrive from the client.  --backup-dir, --partial-dir and
@@ -808,12 +832,18 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
     free(disk_path);
     return FILE_SAVE_ERROR;
   }
+  /* Snapshot the final destination's existence BEFORE any backup/force/partial
+     step can move or remove it, so the receiver can report rsync's
+     `Number of created files` (protocol 2.28.0). */
+  bool dest_existed = file_path_exists_secure(destination_path);
 
   /* --delay-updates diverts the whole write into the staging tree; the rest of
      this function is the immediate-install path. */
   if (config && config->delay_updates) {
     FileSaveResult result =
         file_stage_delayed_update(root_directory, destination_path, file, (Config*)config);
+    if (result == FILE_SAVE_WRITTEN && created && !dest_existed)
+      *created = true;
     free(confined_backup);
     free(confined_partial);
     free(destination_path);
@@ -939,19 +969,23 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
      existing/ignore-existing/update/backup preamble above has already made the
      policy decision. */
   bool ok;
+  char* count_floor = file_transfer_root_floor(config);
   if (config && file->basis_link) {
-    ok = file_to_disk_secure_link_attrs(
+    ok = file_to_disk_secure_link_attrs_counted(
         disk_path, file->basis_link, file->data->data, file->data->size, config->preallocate,
-        metadata, policy, config->use_fsync, file->xattrs, config->fake_super, confined_temp);
+        metadata, policy, config->use_fsync, file->xattrs, config->fake_super, confined_temp,
+        created_dirs, count_floor);
   } else {
     /* The plain no-replace / update / with-fsync engines, plus per-file xattr
        (-X/-A) and --fake-super application on the written fd. */
-    ok = file_to_disk_secure_attrs(
+    ok = file_to_disk_secure_attrs_counted(
         disk_path, file->data->data, file->data->size, inplace, sparse,
         config && config->preallocate, metadata, policy, config && config->update,
         config && config->ignore_existing, config && config->use_fsync, file->xattrs,
-        config ? config->fake_super : false, config ? config->partial : false, confined_temp);
+        config ? config->fake_super : false, config ? config->partial : false, confined_temp,
+        created_dirs, count_floor);
   }
+  free(count_floor);
   free(confined_temp);
   confined_temp = NULL;
   if (!ok)
@@ -972,6 +1006,8 @@ FileSaveResult file_save_to_disk_full(const char* root_directory, const File* fi
   free(confined_partial);
   free(destination_path);
   free(disk_path);
+  if (created && !dest_existed)
+    *created = true;
   return FILE_SAVE_WRITTEN;
 
 fail:
@@ -984,6 +1020,30 @@ fail:
   return FILE_SAVE_ERROR;
 }
 
+void receiver_stats_note_saved(ReceiverStats* stats, const File* file, bool created,
+                               unsigned created_dirs) {
+  if (!stats || !file)
+    return;
+  bool is_sibling = file->link_group != 0 && !file->link_first;
+  if (!file->is_dir && !file->is_symlink && !file->is_special && !is_sibling) {
+    unsigned long long literal = file->literal_bytes;
+    if (literal == 0 && file->matched_bytes == 0)
+      literal = file->data ? file->data->size : 0;
+    stats->literal_bytes += literal;
+  }
+  stats->created_dir += created_dirs;
+  if (!created)
+    return;
+  if (file->is_dir)
+    stats->created_dir++;
+  else if (file->is_symlink)
+    stats->created_link++;
+  else if (file->is_special)
+    stats->created_special++;
+  else
+    stats->created_reg++;
+}
+
 /* Receive a file's xattr block (when the config enables xattr transport) and
  * attach it to `file`.  Returns false on a malformed/oversized frame. */
 static bool receive_file_xattrs(File* file, int fd, const Config* config) {
@@ -1094,11 +1154,15 @@ static File* receive_delta_file(int fd, const Config* config, const char* check_
       return NULL;
     }
     /* Wire-stats tally: bytes taken straight from the basis file (matched
-       delta blocks).  Computed before the delta is destroyed. */
+       delta blocks) and bytes shipped literally (protocol 2.28.0).  Computed
+       before the delta is destroyed. */
     unsigned long long matched = 0;
+    unsigned long long literal = 0;
     for (uint32_t k = 0; k < delta->instruction_count; k++) {
       if (delta->instructions[k].type == DELTA_INSTR_BLOCK_MATCH)
         matched += delta->instructions[k].match.length;
+      else if (delta->instructions[k].type == DELTA_INSTR_LITERAL)
+        literal += delta->instructions[k].literal.length;
     }
     void* new_data = delta_apply(old_data, old_size, delta, config->delta_block_size);
     delta_destroy(delta);
@@ -1119,6 +1183,7 @@ static File* receive_delta_file(int fd, const Config* config, const char* check_
       return NULL;
     }
     file->matched_bytes = matched;
+    file->literal_bytes = literal;
 
     if (config->use_metadata) {
       int meta_ok = 1;

src/shared/file_receive.h

@@ -179,6 +179,22 @@ typedef enum { FILE_SAVE_ERROR = 0, FILE_SAVE_WRITTEN = 1, FILE_SAVE_SKIPPED = 2
 
 FileSaveResult file_save_to_disk_full(const char* root_directory, const File* file,
                                       const Config* config);
+/* Protocol 2.28.0 variant: also reports through `created` (when non-NULL)
+ * whether the destination entry did not exist before this save, and through
+ * `created_dirs` how many parent directories the confined walk created, so the
+ * receiver can build rsync's `Number of created files` breakdown.  The plain
+ * file_save_to_disk_full() is this with both out-params NULL. */
+FileSaveResult file_save_to_disk_full_ex(const char* root_directory, const File* file,
+                                         const Config* config, bool* created,
+                                         unsigned* created_dirs);
 bool file_save_to_disk(const char* root_directory, const File* file, const Config* config);
 
+/* Protocol 2.28.0 receiver counter accumulator: fold one successfully saved
+ * entry into `stats`, adding its receiver-observed literal bytes and, when
+ * `created`, the matching created-by-type counter (regular file / symlink /
+ * special) plus `created_dirs` implicitly-created parent directories.
+ * Non-first hardlink siblings contribute no literal bytes. */
+void receiver_stats_note_saved(ReceiverStats* stats, const File* file, bool created,
+                               unsigned created_dirs);
+
 #endif

src/shared/file_types.h

@@ -97,6 +97,11 @@ typedef struct {
    * basis file (matched delta blocks) for this entry.  0 when the file was sent
    * whole.  Accumulated into ReceiverStats.matched_data by the receiver sink. */
   unsigned long long matched_bytes;
+  /* Receiver-only (protocol 2.28.0) wire-stats tally: the literal delta fragment
+   * bytes this entry carried (DELTA_INSTR_LITERAL).  0 when the file was sent
+   * whole; the sink then falls back to the whole payload size.  Accumulated
+   * into ReceiverStats.literal_bytes. */
+  unsigned long long literal_bytes;
 } File;
 
 /* The path that should be sent on the wire and used for the receiver-side

src/shared/format.c

@@ -105,25 +105,27 @@ bool format_dest_state_receive(int fd, OutputDestState* state) {
 bool format_stats_send(int fd, const ReceiverStats* stats) {
   if (!stats)
     return false;
-  unsigned long long matched = stats->matched_data;
+  unsigned long long fields[8] = {
-  unsigned long long deleted = stats->deleted_files;
+      stats->matched_data, stats->deleted_files, stats->would_delete_count, stats->literal_bytes,
-  unsigned long long would = stats->would_delete_count;
+      stats->created_reg,  stats->created_dir,   stats->created_link,       stats->created_special,
-  return send_n_data(fd, &matched, sizeof(matched)) && send_n_data(fd, &deleted, sizeof(deleted)) &&
+  };
-         send_n_data(fd, &would, sizeof(would));
+  return send_n_data(fd, fields, sizeof(fields));
 }
 
 bool format_stats_receive(int fd, ReceiverStats* stats) {
   if (!stats)
     return false;
-  unsigned long long matched = 0;
+  unsigned long long fields[8] = {0};
-  unsigned long long deleted = 0;
+  if (!receive_n_data(fd, fields, sizeof(fields)))
-  unsigned long long would = 0;
-  if (!receive_n_data(fd, &matched, sizeof(matched)) ||
-      !receive_n_data(fd, &deleted, sizeof(deleted)) || !receive_n_data(fd, &would, sizeof(would)))
     return false;
   memset(stats, 0, sizeof(*stats));
-  stats->matched_data = matched;
+  stats->matched_data = fields[0];
-  stats->deleted_files = deleted;
+  stats->deleted_files = fields[1];
-  stats->would_delete_count = would;
+  stats->would_delete_count = fields[2];
+  stats->literal_bytes = fields[3];
+  stats->created_reg = fields[4];
+  stats->created_dir = fields[5];
+  stats->created_link = fields[6];
+  stats->created_special = fields[7];
   return true;
 }

src/shared/format.h

@@ -57,14 +57,26 @@ bool format_dest_state_send(int fd, const OutputDestState* state);
 bool format_dest_state_receive(int fd, OutputDestState* state);
 
 /* End-of-transfer receiver counters reported through STATUS_STATS (protocol
- * 2.25.0) when the wire config carries report_stats.  `would_delete_count` is
+ * 2.25.0, extended in 2.28.0) when the wire config carries report_stats.
- * the number of destination-relative paths the receiver would have deleted in a
+ * `would_delete_count` is the number of destination-relative paths the receiver
- * -n/--dry-run --delete run; that many wire strings immediately follow the
+ * would have deleted in a -n/--dry-run --delete run; that many wire strings
- * fixed record (sent/read by the caller). */
+ * immediately follow the fixed record (sent/read by the caller).
+ *
+ * Protocol 2.28.0 adds the receiver-observed counters the sender cannot see:
+ * `literal_bytes` is the file data the receiver actually stored literally
+ * (whole files plus the literal fragments of a delta) and the four `created_*`
+ * counters split the destination entries the receiver newly created by type,
+ * reproducing rsync's `Number of created files` breakdown and an exact
+ * `Literal data` for a delta run. */
 typedef struct {
   unsigned long long matched_data;
   unsigned long long deleted_files;
   unsigned long long would_delete_count;
+  unsigned long long literal_bytes;
+  unsigned long long created_reg;
+  unsigned long long created_dir;
+  unsigned long long created_link;
+  unsigned long long created_special;
 } ReceiverStats;
 
 /* Fixed-width STATUS_STATS counter record.  The status frame and the optional

tests/integration/parity_harness.py

@@ -56,10 +56,13 @@ STDOUT_OUTFMT = "outfmt"
 STDOUT_STATS = "stats"
 
 # rsync --stats lines that are protocol-independent and must match exactly.
-# Deliberately excluded: the per-type "Number of files"/"Number of created
+# `Number of files` and `Number of created files` carry rsync's per-type
-# files" breakdown and Total bytes sent/received (documented residual, see the
+# breakdown; protocol 2.28.0 reports the receiver-created split over
-# `--stats` row in RSYNC_COMPAT.md).
+# STATUS_STATS.  Deliberately excluded: Total bytes sent/received (protocol
+# framing differs, see the `--stats` row in RSYNC_COMPAT.md).
 STATS_KEYS = (
+    "Number of files",
+    "Number of created files",
     "Number of deleted files",
     "Number of regular files transferred",
     "Total file size",
@@ -443,6 +446,11 @@ def run_differential(  # noqa: PLR0913 (explicit scenario parameters)
         rroot, froot = os.path.join(rdst, rel), get_dest_received_dir(fdst, src)
     else:
         rroot, froot = rdst, get_dest_received_dir(fdst, src)
+    # rsync's destination root always exists (clean_dir created it).  FastSync's
+    # logical transfer root is the mirror path below the destination argument,
+    # so pre-create it too: `Number of created files` counts the root only when
+    # it is genuinely absent, and the two tools must start from the same state.
+    os.makedirs(froot, exist_ok=True)
     if seed:
         seed(src, rroot, froot)
 

tests/integration/test_fault_injection.py

@@ -36,7 +36,7 @@ from common import (  # noqa: E402
     verify_transfer,
 )
 
-PROTOCOL_VERSION = b"2.27.0"
+PROTOCOL_VERSION = b"2.28.0"
 STATUS_MANIFEST = 5
 STATUS_OK = 0
 

tests/integration/test_output_parity.py

@@ -289,6 +289,15 @@ def _make_one_file(root, name="f.bin", size=100):
         fh.write(bytes((i * 7 + 3) & 0xFF for i in range(size)))
 
 
+def _pick_stats(text, keys):
+    out = {}
+    for line in text.splitlines():
+        for key in keys:
+            if line.startswith(key + ":"):
+                out[key] = line
+    return out
+
+
 class TestWireStatsParity:
     """Wire-counter output parity: --out-format %b/%c/%C, --progress and
     --stats versus real rsync 3.4.1."""
@@ -496,6 +505,9 @@ class TestWireStatsParity:
         _make_one_file(source, "f.bin", 6000)
         clean_dir(dest)
         clean_dir(rdst)
+        # Start both tools from the same state: rsync's destination root exists,
+        # so pre-create FastSync's mirrored logical root as well.
+        os.makedirs(get_dest_received_dir(dest, source), exist_ok=True)
         rsync_result = _rsync(["-a", "--stats", source + "/", rdst + "/"])
         assert rsync_result.returncode == 0, rsync_result.stderr
         flags = ["-a", "--stats"] + (["--threads"] if mt else [])
@@ -526,17 +538,18 @@ class TestWireStatsParity:
     @requires_rsync
     @pytest.mark.ci
     def test_stats_file_count_breakdown_matches_rsync(self, shared_server):
-        """`Number of files` now carries rsync's per-type breakdown: the scanner
+        """`Number of files` and `Number of created files` both carry rsync's
-        accounts directory entries (captured for -a/-t/-p) plus reg/link/special
+        per-type breakdown (protocol 2.28.0 reports the receiver-created
-        from the transfer list.  `Number of created files` still lacks the type
+        reg/dir/link/special split over STATUS_STATS)."""
-        breakdown (FastSync cannot tell which entries the receiver newly
-        created), so that residual is pinned separately."""
         source = os.path.join(TEST_DATA_DIR, "wire_stc_src")
         dest = os.path.join(TEST_DATA_DIR, "wire_stc_dst")
         rdst = os.path.join(TEST_DATA_DIR, "wire_stc_rdst")
         _make_one_file(source, "f.bin", 6000)
         clean_dir(dest)
         clean_dir(rdst)
+        # Start both tools from the same state: rsync's destination root exists,
+        # so pre-create FastSync's mirrored logical root as well.
+        os.makedirs(get_dest_received_dir(dest, source), exist_ok=True)
         rsync_result = _rsync(["-a", "--stats", source + "/", rdst + "/"])
         assert rsync_result.returncode == 0, rsync_result.stderr
         result, _ = run_client(source, dest, flags=["-a", "--stats"],
@@ -556,10 +569,71 @@ class TestWireStatsParity:
 
         assert re.match(r"Number of files: 2 \(reg: 1, dir: 1\)$", r_files), r_files
         assert r_files == f_files, (r_files, f_files)
-        # rsync always carries the created type breakdown; FastSync prints the
-        # bare transferred-regular count (documented residual).
         assert re.match(r"Number of created files: 1 \(reg: 1\)$", r_created), r_created
-        assert re.fullmatch(r"Number of created files: 1", f_created), f_created
+        assert f_created == r_created, (r_created, f_created)
+
+    @requires_rsync
+    @pytest.mark.ci
+    @pytest.mark.parametrize("mt", [False, True])
+    def test_stats_created_and_literal_fresh_update_delta(self, shared_server, mt):
+        """The receiver-observed counters must match rsync for the three
+        transfer shapes: a fresh create (created breakdown + whole-file literal),
+        an update (created == 0, whole-file literal), and a delta update (only
+        the literal delta fragments are counted, not the whole file)."""
+        source = os.path.join(TEST_DATA_DIR, "wire_stcd_src")
+        dest = os.path.join(TEST_DATA_DIR, "wire_stcd_dst")
+        rdst = os.path.join(TEST_DATA_DIR, "wire_stcd_rdst")
+        clean_dir(source)
+        clean_dir(dest)
+        clean_dir(rdst)
+        os.makedirs(source, exist_ok=True)
+        os.makedirs(get_dest_received_dir(dest, source), exist_ok=True)
+        with open(os.path.join(source, "big.bin"), "wb") as fh:
+            fh.write(bytes(range(256)) * 4096)  # 1 MiB
+        mt_flag = ["--threads"] if mt else []
+
+        def compare(tag):
+            # Pin the delta block size on both ends: rsync's adaptive block size
+            # would otherwise make the literal/matched split non-comparable.
+            rsync_result = _rsync(["-a", "--stats", "--no-whole-file", "-B8192",
+                                   source + "/", rdst + "/"])
+            assert rsync_result.returncode == 0, rsync_result.stderr
+            result, _ = run_client(
+                source, dest,
+                flags=["-a", "--stats", "--incremental", "--delta", "-B8192"] + mt_flag,
+                port=shared_server.port)
+            assert result.returncode == 0, result.stderr[:300]
+            keys = ("Number of created files", "Literal data", "Matched data",
+                    "Total transferred file size")
+            r = _pick_stats(rsync_result.stdout, keys)
+            f = _pick_stats(result.stdout, keys)
+            assert r == f, f"{tag}: rsync={r} fastsync={f}"
+            return r
+
+        fresh = compare("fresh")
+        assert re.match(r"Number of created files: 1 \(reg: 1\)$",
+                        fresh["Number of created files"]), fresh
+
+        # Update the source and re-run: the destination already exists.
+        sleep_mtime = os.path.getmtime(os.path.join(source, "big.bin")) + 2
+        with open(os.path.join(source, "big.bin"), "r+b") as fh:
+            fh.seek(100)
+            fh.write(b"XXXXXXXXXX")
+        os.utime(os.path.join(source, "big.bin"), (sleep_mtime, sleep_mtime))
+        update = compare("update")
+        assert update["Number of created files"] == "Number of created files: 0", update
+
+        # Second delta update: change bytes far apart, so rsync ships only the
+        # literal fragments and FastSync must report the same Literal data.
+        sleep_mtime = os.path.getmtime(os.path.join(source, "big.bin")) + 2
+        with open(os.path.join(source, "big.bin"), "r+b") as fh:
+            fh.seek(500000)
+            fh.write(b"YYYYYYYYYY")
+        os.utime(os.path.join(source, "big.bin"), (sleep_mtime, sleep_mtime))
+        delta = compare("delta")
+        assert delta["Number of created files"] == "Number of created files: 0", delta
+        lit = int(delta["Literal data"].split(":", 1)[1].strip().split()[0].replace(",", ""))
+        assert 0 < lit < 1024 * 1024, delta
 
     @requires_rsync
     @pytest.mark.ci

tests/integration/test_preflight.py

@@ -94,14 +94,14 @@ def _seed_protocol_source(source):
 class TestProtocol:
     @pytest.mark.ci
     def test_protocol_current_version_accepted(self, shared_server):
-        """--protocol=2.27.0 (the current PROTOCOL_VERSION) is accepted and the
+        """--protocol=2.28.0 (the current PROTOCOL_VERSION) is accepted and the
         transfer completes normally."""
         source = os.path.join(TEST_DATA_DIR, "proto_ok_src")
         dest = os.path.join(TEST_DATA_DIR, "proto_ok_dst")
         shutil.rmtree(dest, ignore_errors=True)
         os.makedirs(dest)
         _seed_protocol_source(source)
-        result, _ = run_client(source, dest, flags=["--protocol=2.27.0"],
+        result, _ = run_client(source, dest, flags=["--protocol=2.28.0"],
                                port=shared_server.port)
         assert result.returncode == 0, \
             f"--protocol current run failed: {(result.stderr or result.stdout)[:400]}"

tests/test_client_cli.c

@@ -318,7 +318,7 @@ static void test_parse_args_protocol_accept_current() {
   Config* cfg = valid_client_config();
   EXPECT_NOT_NULL(cfg);
   char* argv_equals[] = {"fastsync",   "--source-dir", "/src",
-                         "--dest-dir", "/dst",         "--protocol=2.27.0"};
+                         "--dest-dir", "/dst",         "--protocol=2.28.0"};
   int positional_args[2];
   int positional_count = 0;
   EXPECT_EQ_INT(parse_args(cfg, 6, argv_equals, positional_args, &positional_count), 0);
@@ -328,7 +328,7 @@ static void test_parse_args_protocol_accept_current() {
   cfg = valid_client_config();
   EXPECT_NOT_NULL(cfg);
   char* argv_space[] = {"fastsync", "--source-dir", "/src",  "--dest-dir",
-                        "/dst",     "--protocol",   "2.27.0"};
+                        "/dst",     "--protocol",   "2.28.0"};
   positional_count = 0;
   EXPECT_EQ_INT(parse_args(cfg, 7, argv_space, positional_args, &positional_count), 0);
   EXPECT_EQ_STR(cfg->version, PROTOCOL_VERSION);

tests/test_config.c

@@ -2831,15 +2831,17 @@ static void golden_config_populate(Config* c) {
   c->copy_as_gid = 222;
 }
 
-/* The pinned golden frame (protocol 2.27.0).  The values below are the only
+/* The pinned golden frame (protocol 2.28.0).  The values below are the only
  * thing that ties the generated table to the historical wire format; update
  * them ONLY with a PROTOCOL_VERSION bump and a documented reason.  The 2.24.0
  * delete-plan wave changed only the version string; 2.25.0 appended the
- * report_stats bool, 2.26.0 appended the compression_algo int, and 2.27.0
+ * report_stats bool, 2.26.0 appended the compression_algo int, 2.27.0 appended
- * appended the report_deletes bool.  The byte-exact values are recomputed for
+ * the report_deletes bool, and 2.28.0 changed only the version string (the
- * the merged layout. */
+ * STATUS_STATS body grew, but the config frame layout is unchanged, so the
+ * frame length is identical).  The byte-exact values are recomputed for the
+ * merged layout. */
 #define GOLDEN_WIRE_LEN 709
-#define GOLDEN_WIRE_HASH 14423869696887880000ULL
+#define GOLDEN_WIRE_HASH 417335736347473203ULL
 
 static unsigned long long fnv1a_64(const unsigned char* buf, size_t len) {
   unsigned long long h = 1469598103934665603ULL;
@@ -2921,7 +2923,7 @@ static unsigned long long capture_wire_hash(const Config* cfg, size_t* out_len)
   return h;
 }
 
-/* Byte-for-byte wire compatibility guard (protocol 2.27.0).  The expected hash
+/* Byte-for-byte wire compatibility guard (protocol 2.28.0).  The expected hash
  * pins the pre-X-macro byte stream; the refactor MUST NOT change it. */
 static void test_config_wire_golden() {
   if (is_running_under_valgrind())

tests/test_format.c

@@ -86,9 +86,43 @@ static void test_dest_state_roundtrip() {
   close(fds[1]);
 }
 
+static void test_stats_roundtrip() {
+  /* STATUS_STATS grew from three counters (2.25.0) to eight (2.28.0); the codec
+   * must carry every field, including the receiver-observed literal/created
+   * counters, across the wire in order. */
+  int fds[2];
+  if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) != 0)
+    return;
+  ReceiverStats out;
+  memset(&out, 0, sizeof(out));
+  out.matched_data = 111111111ULL;
+  out.deleted_files = 7;
+  out.would_delete_count = 3;
+  out.literal_bytes = 222222222ULL;
+  out.created_reg = 5;
+  out.created_dir = 4;
+  out.created_link = 2;
+  out.created_special = 1;
+  ReceiverStats in;
+  memset(&in, 0, sizeof(in));
+  EXPECT_TRUE(format_stats_send(fds[0], &out));
+  EXPECT_TRUE(format_stats_receive(fds[1], &in));
+  EXPECT_TRUE(in.matched_data == out.matched_data);
+  EXPECT_TRUE(in.deleted_files == out.deleted_files);
+  EXPECT_TRUE(in.would_delete_count == out.would_delete_count);
+  EXPECT_TRUE(in.literal_bytes == out.literal_bytes);
+  EXPECT_TRUE(in.created_reg == out.created_reg);
+  EXPECT_TRUE(in.created_dir == out.created_dir);
+  EXPECT_TRUE(in.created_link == out.created_link);
+  EXPECT_TRUE(in.created_special == out.created_special);
+  close(fds[0]);
+  close(fds[1]);
+}
+
 void test_format(void) {
   test_human_size_decimal();
   test_big_num_grouping();
   test_datetime_format();
   test_dest_state_roundtrip();
+  test_stats_roundtrip();
 }

tests/test_server.c

@@ -3,6 +3,8 @@
 #include "config.h"
 #include "delta.h"
 #include "file.h"
+#include "file_receive.h"
+#include "format.h"
 #include "log.h"
 #include "protocol.h"
 #include "test_utils.h"
@@ -134,6 +136,124 @@ static void test_receive_files_single_file() {
   }
 }
 
+/* Protocol 2.28.0: a fresh single-file transfer over the wire reports the
+ * receiver-observed literal bytes and the created-regular counter through the
+ * terminal STATUS_STATS frame, and an update reports created_reg == 0. */
+static void test_receive_stats_frame_created_and_literal() {
+  const char* content = "stats frame content";
+  size_t len = strlen(content);
+  char root_template[] = "/tmp/fastsync_stats_XXXXXX";
+  char* root = mkdtemp(root_template);
+  EXPECT_NOT_NULL(root);
+
+  int p[2];
+  EXPECT_EQ_INT(socketpair(AF_UNIX, SOCK_STREAM, 0, p), 0);
+  io_set_fds(p[0], p[1]);
+  io_set_bwlimit(0);
+
+  Config* cfg = config_create();
+  EXPECT_NOT_NULL(cfg);
+  free(cfg->version);
+  cfg->version = str_dup(PROTOCOL_VERSION);
+  cfg->send_directory = str_dup("/src");
+  cfg->receive_root_directory = str_dup(root);
+  cfg->save_to_disk = true;
+  cfg->report_stats = true;
+
+  pid_t pid = fork();
+  if (pid == 0) {
+    close(p[1]);
+    io_set_fds(p[0], p[0]);
+    int ret = receiver_receive_files(cfg, p[0]);
+    close(p[0]);
+    config_delete(cfg);
+    _exit(ret == 0 ? 0 : 1);
+  }
+  close(p[0]);
+  io_set_fds(p[1], p[1]);
+  send_status(p[1], STATUS_NEXT);
+  File* file = file_create("created.bin");
+  EXPECT_NOT_NULL(file);
+  file->data->data = malloc(len);
+  EXPECT_NOT_NULL(file->data->data);
+  memcpy(file->data->data, content, len);
+  file->data->size = len;
+  send_str(p[1], file->path);
+  send_data(p[1], file->data);
+  file_destroy(file);
+  send_status(p[1], STATUS_FINISHED);
+
+  Status status;
+  EXPECT_TRUE(receive_status(p[1], &status));
+  EXPECT_EQ_INT(status, STATUS_STATS);
+  ReceiverStats stats;
+  EXPECT_TRUE(format_stats_receive(p[1], &stats));
+  int would = 0;
+  EXPECT_TRUE(receive_int(p[1], &would));
+  EXPECT_EQ_INT(would, 0);
+  EXPECT_TRUE(stats.created_reg == 1);
+  EXPECT_TRUE(stats.created_dir == 0);
+  EXPECT_TRUE(stats.created_link == 0);
+  EXPECT_TRUE(stats.created_special == 0);
+  EXPECT_TRUE(stats.literal_bytes == (unsigned long long)len);
+  EXPECT_TRUE(stats.matched_data == 0);
+
+  Status final;
+  EXPECT_TRUE(receive_status(p[1], &final));
+  EXPECT_EQ_INT(final, STATUS_OK);
+  int wstatus;
+  waitpid(pid, &wstatus, 0);
+  close(p[1]);
+  config_delete(cfg);
+  EXPECT_TRUE(WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 0);
+
+  /* Second run against the now-existing destination: no created file. */
+  EXPECT_EQ_INT(socketpair(AF_UNIX, SOCK_STREAM, 0, p), 0);
+  io_set_fds(p[0], p[1]);
+  io_set_bwlimit(0);
+  cfg = config_create();
+  EXPECT_NOT_NULL(cfg);
+  free(cfg->version);
+  cfg->version = str_dup(PROTOCOL_VERSION);
+  cfg->send_directory = str_dup("/src");
+  cfg->receive_root_directory = str_dup(root);
+  cfg->save_to_disk = true;
+  cfg->report_stats = true;
+  pid = fork();
+  if (pid == 0) {
+    close(p[1]);
+    io_set_fds(p[0], p[0]);
+    int ret = receiver_receive_files(cfg, p[0]);
+    close(p[0]);
+    config_delete(cfg);
+    _exit(ret == 0 ? 0 : 1);
+  }
+  close(p[0]);
+  io_set_fds(p[1], p[1]);
+  send_status(p[1], STATUS_NEXT);
+  file = file_create("created.bin");
+  EXPECT_NOT_NULL(file);
+  file->data->data = malloc(len);
+  EXPECT_NOT_NULL(file->data->data);
+  memcpy(file->data->data, content, len);
+  file->data->size = len;
+  send_str(p[1], file->path);
+  send_data(p[1], file->data);
+  file_destroy(file);
+  send_status(p[1], STATUS_FINISHED);
+  EXPECT_TRUE(receive_status(p[1], &status));
+  EXPECT_EQ_INT(status, STATUS_STATS);
+  EXPECT_TRUE(format_stats_receive(p[1], &stats));
+  EXPECT_TRUE(receive_int(p[1], &would));
+  EXPECT_TRUE(stats.created_reg == 0);
+  EXPECT_TRUE(stats.literal_bytes == (unsigned long long)len);
+  EXPECT_TRUE(receive_status(p[1], &final));
+  waitpid(pid, &wstatus, 0);
+  close(p[1]);
+  config_delete(cfg);
+  EXPECT_TRUE(WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 0);
+}
+
 /* Test receive_files with STATUS_ABORT */
 static void test_receive_files_abort() {
   Config* cfg = config_create();
@@ -1183,6 +1303,7 @@ void test_server() {
   if (!is_running_under_valgrind()) {
     test_receive_files_finished();
     test_receive_files_single_file();
+    test_receive_stats_frame_created_and_literal();
     test_receive_files_abort();
     test_receive_manifest_rejects_traversal();
     test_receive_incremental_check_rejects_invalid_nanoseconds();