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feat(basis): rsync quick-check default + FastSync-only --verify-basis

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- default basis match is rsync's metadata quick-check (size + mtime; size-only
  drops mtime; -I disables), no mandatory content digest
- new long-only --verify-basis (wire bool, protocol stays 2.28.0) restores the
  strict whole-file content equality
- --copy-dest re-applies source attributes; basis-hit 256 MiB cap removed by
  streaming the copy/hash; basis miss keeps the normal payload bound
- compare/copy/link-dest rows -> caveat; tally 116/13/28
This commit is contained in:
TapTap
2026-09-19 15:55:51 +02:00
parent 8ec8cb7203
commit 67076bf218
23 changed files with 940 additions and 255 deletions
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tests/test_config.c
+8 -4
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@@ -2826,6 +2826,7 @@ static void golden_config_populate(Config* c) {
c->skip_compress_suffixes[1] = str_dup(".xz");
EXPECT_EQ_INT(config_basis_append(c, BASIS_DEST_COMPARE, "compare"), 0);
EXPECT_EQ_INT(config_basis_append(c, BASIS_DEST_LINK, "link"), 0);
c->verify_basis = true;
c->fuzzy = true;
c->checksum_algo = CHECKSUM_ALGO_MD5;
c->checksum_seed = 0x1122334455667788ULL;
@@ -2888,10 +2889,12 @@ static void golden_config_populate(Config* c) {
* report_stats bool, 2.26.0 appended the compression_algo int, 2.27.0 appended
* the report_deletes bool, and 2.28.0 changed only the version string and
* appended the receiver-side delete-protection rule block (the STATUS_STATS
* body also grew, but that is not part of this frame). The byte-exact values
* are recomputed for the merged layout. */
#define GOLDEN_WIRE_LEN 882
#define GOLDEN_WIRE_HASH 10588362715396735070ULL
* body also grew, but that is not part of this frame). Track 5a appends the
* FastSync-only verify_basis bool to the basis block WITHOUT a version bump
* (project decision), so the frame grew by one int to 886 bytes. The
* byte-exact values are recomputed for the merged layout. */
#define GOLDEN_WIRE_LEN 886
#define GOLDEN_WIRE_HASH 5809509022716816757ULL
static unsigned long long fnv1a_64(const unsigned char* buf, size_t len) {
unsigned long long h = 1469598103934665603ULL;
@@ -3040,6 +3043,7 @@ static void test_config_wire_golden_receive() {
recv->groupmap[0].to_name != NULL && strcmp(recv->groupmap[0].to_name, "root") == 0;
ok = ok && recv->basis_count == 2 && recv->basis_dirs[0].type == BASIS_DEST_COMPARE &&
recv->basis_dirs[1].type == BASIS_DEST_LINK;
ok = ok && recv->verify_basis;
ok = ok && recv->module != NULL && strcmp(recv->module, "goldenmod") == 0;
ok = ok && recv->copy_as_set && recv->copy_as_uid == 111 && recv->copy_as_gid == 222;
}