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FastSync/tests/test_delete_plan.c
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TapTap f6f49d536e test(delete): cover apply=false config-only carrier frame 
Adds a unit test proving the config-only STATUS_DELETE_PLAN frame applies
--delete-missing-args exact deletions while walking no directory (the
--files-from-with-no-synced-dir fix).
2026-09-19 17:07:56 +02:00

275 lines
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#include "test_delete_plan.h"
#include "charset.h"
#include "config.h"
#include "delete_plan.h"
#include "protocol.h"
#include "test_utils.h"
#include "utils.h"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <unistd.h>
/* Send one STATUS_DELETE_PLAN body (the leading status is consumed by the
* caller/receiver entry point) describing `dir` with no kept children. */
static void send_plan_frame(int fd, const char* dir) {
EXPECT_TRUE(send_int(fd, 0)); /* has_config */
EXPECT_TRUE(send_int(fd, 1)); /* apply: a real plan */
EXPECT_TRUE(send_wire_str(fd, dir));
EXPECT_TRUE(send_int(fd, 0)); /* kept child dirs */
EXPECT_TRUE(send_int(fd, 0)); /* kept child files */
}
/* --delete-delay: a directory snapshotted into the plan that is refilled before
* the commit is re-scanned and removed recursively (rsync parity). Regression
* for the old single-unlink ENOTEMPTY path that left the directory behind. */
static void test_delete_delay_refilled_dir_removed_recursively(void) {
char root[] = "/tmp/fastsync_dp_refill_XXXXXX";
EXPECT_TRUE(mkdtemp(root) != NULL);
char extra[1024];
snprintf(extra, sizeof(extra), "%s/extra", root);
EXPECT_EQ_INT(mkdir(extra, 0700), 0);
Config* config = config_create();
EXPECT_NOT_NULL(config);
config->receive_root_directory = str_dup(root);
config->use_delete = true;
config->delete_delay = true;
int p[2];
EXPECT_EQ_INT(socketpair(AF_UNIX, SOCK_STREAM, 0, p), 0);
DeletePlanSession* session = delete_plan_session_create(config);
EXPECT_NOT_NULL(session);
send_plan_frame(p[1], ".");
EXPECT_EQ_INT(delete_plan_session_receive(session, config, p[0]), 0);
/* The empty extra directory was snapshotted, not removed yet. */
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 0);
/* Refill the directory while the deferred commit is pending. */
char refill[1200];
snprintf(refill, sizeof(refill), "%s/new.txt", extra);
int fd = open(refill, O_WRONLY | O_CREAT | O_TRUNC, 0600);
EXPECT_TRUE(fd >= 0);
close(fd);
EXPECT_EQ_INT(delete_plan_session_commit(session, config), DELETE_COMMIT_OK);
/* The late content and the directory itself are both removed. */
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 2);
struct stat st;
EXPECT_TRUE(lstat(extra, &st) != 0);
delete_plan_session_destroy(session);
close(p[0]);
close(p[1]);
rmdir(root);
config_delete(config);
}
/* The complement: a deferred regular extra that DOES get removed is counted. */
static void test_delete_delay_removed_file_counted(void) {
char root[] = "/tmp/fastsync_dp_file_XXXXXX";
EXPECT_TRUE(mkdtemp(root) != NULL);
char extra[1024];
snprintf(extra, sizeof(extra), "%s/extra.txt", root);
int fd = open(extra, O_WRONLY | O_CREAT | O_TRUNC, 0600);
EXPECT_TRUE(fd >= 0);
close(fd);
Config* config = config_create();
EXPECT_NOT_NULL(config);
config->receive_root_directory = str_dup(root);
config->use_delete = true;
config->delete_delay = true;
int p[2];
EXPECT_EQ_INT(socketpair(AF_UNIX, SOCK_STREAM, 0, p), 0);
DeletePlanSession* session = delete_plan_session_create(config);
EXPECT_NOT_NULL(session);
send_plan_frame(p[1], ".");
EXPECT_EQ_INT(delete_plan_session_receive(session, config, p[0]), 0);
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 0);
EXPECT_EQ_INT(delete_plan_session_commit(session, config), DELETE_COMMIT_OK);
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 1);
EXPECT_TRUE(lstat(extra, &(struct stat){0}) != 0);
delete_plan_session_destroy(session);
close(p[0]);
close(p[1]);
rmdir(root);
config_delete(config);
}
/* --max-delete is charged on actual removals, not at plan/snapshot time: after
* receiving the plans the budget is untouched, and only the commit removes up to
* the limit. */
static void test_delete_delay_max_delete_bounds_actual(void) {
char root[] = "/tmp/fastsync_dp_max_XXXXXX";
EXPECT_TRUE(mkdtemp(root) != NULL);
for (int i = 0; i < 3; i++) {
char path[1024];
snprintf(path, sizeof(path), "%s/e%d.txt", root, i);
int fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
EXPECT_TRUE(fd >= 0);
close(fd);
}
Config* config = config_create();
EXPECT_NOT_NULL(config);
config->receive_root_directory = str_dup(root);
config->use_delete = true;
config->delete_delay = true;
config->max_delete = 1;
int p[2];
EXPECT_EQ_INT(socketpair(AF_UNIX, SOCK_STREAM, 0, p), 0);
DeletePlanSession* session = delete_plan_session_create(config);
EXPECT_NOT_NULL(session);
send_plan_frame(p[1], ".");
EXPECT_EQ_INT(delete_plan_session_receive(session, config, p[0]), 0);
/* Nothing removed yet, so the budget is not consumed at snapshot time. */
EXPECT_FALSE(delete_plan_session_limit_reached(session));
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 0);
EXPECT_EQ_INT(delete_plan_session_commit(session, config), DELETE_COMMIT_LIMIT_REACHED);
EXPECT_TRUE(delete_plan_session_limit_reached(session));
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 1);
delete_plan_session_destroy(session);
close(p[0]);
close(p[1]);
for (int i = 0; i < 3; i++) {
char path[1024];
snprintf(path, sizeof(path), "%s/e%d.txt", root, i);
unlink(path);
}
rmdir(root);
config_delete(config);
}
/* --max-delete is charged on ACTUAL removals: the refilled directory's late
* content is removed first (consuming the single budget slot), so the directory
* itself and the later extra are skipped, matching rsync. The two plans are
* sent as separate frames for "a" then "b", so the ordering that decides which
* entry gets the budget is deterministic (unlike readdir order). */
static void test_delete_delay_actual_removal_charges_budget(void) {
char root[] = "/tmp/fastsync_dp_planbudget_XXXXXX";
EXPECT_TRUE(mkdtemp(root) != NULL);
char adir[1024], bdir[1024], xdir[1024], ydir[1024];
snprintf(adir, sizeof(adir), "%s/a", root);
snprintf(bdir, sizeof(bdir), "%s/b", root);
snprintf(xdir, sizeof(xdir), "%s/a/x", root);
snprintf(ydir, sizeof(ydir), "%s/b/y", root);
EXPECT_EQ_INT(mkdir(adir, 0700), 0);
EXPECT_EQ_INT(mkdir(bdir, 0700), 0);
EXPECT_EQ_INT(mkdir(xdir, 0700), 0);
EXPECT_EQ_INT(mkdir(ydir, 0700), 0);
Config* config = config_create();
EXPECT_NOT_NULL(config);
config->receive_root_directory = str_dup(root);
config->use_delete = true;
config->delete_delay = true;
config->max_delete = 1;
int p[2];
EXPECT_EQ_INT(socketpair(AF_UNIX, SOCK_STREAM, 0, p), 0);
DeletePlanSession* session = delete_plan_session_create(config);
EXPECT_NOT_NULL(session);
/* Both plan snapshots are taken; neither consumes budget yet. */
send_plan_frame(p[1], "a");
EXPECT_EQ_INT(delete_plan_session_receive(session, config, p[0]), 0);
EXPECT_FALSE(delete_plan_session_limit_reached(session));
send_plan_frame(p[1], "b");
EXPECT_EQ_INT(delete_plan_session_receive(session, config, p[0]), 0);
EXPECT_FALSE(delete_plan_session_limit_reached(session));
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 0);
/* Refill a/x after its plan: the recursive commit must remove this content. */
char refill[1200];
snprintf(refill, sizeof(refill), "%s/new.txt", xdir);
int fd = open(refill, O_WRONLY | O_CREAT | O_TRUNC, 0600);
EXPECT_TRUE(fd >= 0);
close(fd);
EXPECT_EQ_INT(delete_plan_session_commit(session, config), DELETE_COMMIT_LIMIT_REACHED);
/* The one budget slot removed the late content; the two directories survive. */
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 1);
EXPECT_TRUE(delete_plan_session_limit_reached(session));
struct stat st;
EXPECT_TRUE(lstat(refill, &st) != 0);
EXPECT_EQ_INT(lstat(xdir, &st), 0);
EXPECT_EQ_INT(lstat(ydir, &st), 0);
delete_plan_session_destroy(session);
close(p[0]);
close(p[1]);
rmdir(xdir);
rmdir(ydir);
rmdir(adir);
rmdir(bdir);
rmdir(root);
config_delete(config);
}
/* Send a config-only carrier frame (apply=false): the per-run config block with
* one --delete-missing-args exact path, and no directory walk. */
static void send_config_only_frame(int fd, const char* missing_path) {
EXPECT_TRUE(send_int(fd, 1)); /* has_config */
EXPECT_TRUE(send_int(fd, 0)); /* protected prefixes */
EXPECT_TRUE(send_int(fd, 0)); /* size-skipped */
EXPECT_TRUE(send_int(fd, 1)); /* missing args */
EXPECT_TRUE(send_wire_str(fd, missing_path));
EXPECT_TRUE(send_int(fd, 0)); /* apply = false */
EXPECT_TRUE(send_wire_str(fd, "."));
EXPECT_TRUE(send_int(fd, 0));
EXPECT_TRUE(send_int(fd, 0));
}
/* The config-only carrier frame (apply=false) still applies the
* --delete-missing-args exact deletions even though it walks no directory. This
* is the fix for a --files-from list that synchronizes no directory. */
static void test_config_only_frame_applies_missing_args(void) {
char root[] = "/tmp/fastsync_dp_cfgonly_XXXXXX";
EXPECT_TRUE(mkdtemp(root) != NULL);
char gone[1024];
snprintf(gone, sizeof(gone), "%s/gone.txt", root);
int fd = open(gone, O_WRONLY | O_CREAT | O_TRUNC, 0600);
EXPECT_TRUE(fd >= 0);
close(fd);
Config* config = config_create();
EXPECT_NOT_NULL(config);
config->receive_root_directory = str_dup(root);
config->delete_missing_args = true;
int p[2];
EXPECT_EQ_INT(socketpair(AF_UNIX, SOCK_STREAM, 0, p), 0);
DeletePlanSession* session = delete_plan_session_create(config);
EXPECT_NOT_NULL(session);
send_config_only_frame(p[1], "gone.txt");
EXPECT_EQ_INT(delete_plan_session_receive(session, config, p[0]), 0);
EXPECT_EQ_INT((int)delete_plan_session_deleted(session), 1);
EXPECT_TRUE(lstat(gone, &(struct stat){0}) != 0);
delete_plan_session_destroy(session);
close(p[0]);
close(p[1]);
rmdir(root);
config_delete(config);
}
void test_delete_plan(void) {
test_delete_delay_refilled_dir_removed_recursively();
test_delete_delay_removed_file_counted();
test_delete_delay_max_delete_bounds_actual();
test_delete_delay_actual_removal_charges_budget();
test_config_only_frame_applies_missing_args();
}
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