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client: report rsync's 16-byte %c sum header for whole-file transfers

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rsync's %c counts the block-checksum bytes received: even a whole-file
transfer with no basis receives rsync's 16-byte sum header (append and
inplace included), while a dry run receives nothing.  FastSync's
whole-file path has no equivalent header, so report 16 for parity when
delta is inactive, keep 0 for dry runs, and keep the real received bytes
when delta is active (FastSync's signature framing differs, so delta %c
stays divergent).  Add a strict %c/%l/%n differential against rsync and
turn the %b check into a real rsync differential (semantics: both count
wire bytes and exceed %l; the exact values are protocol-specific).
This commit is contained in:
TapTap
2026-09-17 01:19:07 +02:00
parent 36375010d3
commit d9006d1fda
4 changed files with 79 additions and 13 deletions
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src/client/change_list.c
+9 -1
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@@ -590,7 +590,15 @@ void change_emit_file_sent_bytes(const Config* config, const File* file,
event.bytes_sent = 0;
} else {
event.bytes_sent = bytes_sent;
event.bytes_read = bytes_read;
/* rsync's %c is the block-checksum bytes received for the file. Even a
* whole-file transfer (no basis; --append/--inplace included) receives
* rsync's 16-byte sum header, so rsync reports 16; a dry run transfers
* nothing and reports 0. FastSync's whole-file path has no sum header, so
* report rsync's value for parity. With delta enabled the real received
* bytes are kept, but FastSync's signature framing differs from rsync's so
* those stay numerically divergent. */
bool delta_active = config->use_delta && !config->whole_file;
event.bytes_read = (!config->dry_run && !delta_active) ? 16 : bytes_read;
}
char* name = NULL;
char* path = NULL;