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qemu/tests/unit/test-util-filemonitor.c
Ilya Leoshkevich 3faebbcd64 test-util-filemonitor: Adapt to the FreeBSD inotify rename semantics 
Unlike on Linux, on FreeBSD renaming a file when the destination
already exists results in an IN_DELETE event for that existing file:

    $ FILEMONITOR_DEBUG=1 build/tests/unit/test-util-filemonitor
    Rename /tmp/test-util-filemonitor-K13LI2/fish/one.txt -> /tmp/test-util-filemonitor-K13LI2/two.txt
    Event id=200000000 event=2 file=one.txt
    Queue event id 200000000 event 2 file one.txt
    Queue event id 100000000 event 2 file two.txt
    Queue event id 100000002 event 2 file two.txt
    Queue event id 100000000 event 0 file two.txt
    Queue event id 100000002 event 0 file two.txt
    Event id=100000000 event=0 file=two.txt
    Expected event 0 but got 2

This difference in behavior is not expected to break the real users, so
teach the test to accept it.

Suggested-by: "Daniel P. Berrange" <berrange@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240206002344.12372-4-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-02-06 10:27:50 +01:00

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/*
* Tests for util/filemonitor-*.c
*
* Copyright 2018 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "qemu/main-loop.h"
#include "qapi/error.h"
#include "qemu/filemonitor.h"
#include <glib/gstdio.h>
#include <utime.h>
enum {
QFILE_MONITOR_TEST_OP_ADD_WATCH,
QFILE_MONITOR_TEST_OP_DEL_WATCH,
QFILE_MONITOR_TEST_OP_EVENT,
QFILE_MONITOR_TEST_OP_CREATE,
QFILE_MONITOR_TEST_OP_APPEND,
QFILE_MONITOR_TEST_OP_TRUNC,
QFILE_MONITOR_TEST_OP_RENAME,
QFILE_MONITOR_TEST_OP_TOUCH,
QFILE_MONITOR_TEST_OP_UNLINK,
QFILE_MONITOR_TEST_OP_MKDIR,
QFILE_MONITOR_TEST_OP_RMDIR,
};
typedef struct {
int type;
const char *filesrc;
const char *filedst;
int64_t *watchid;
int eventid;
/*
* Only valid with OP_EVENT - this event might be
* swapped with the next OP_EVENT
*/
bool swapnext;
} QFileMonitorTestOp;
typedef struct {
int64_t id;
QFileMonitorEvent event;
char *filename;
} QFileMonitorTestRecord;
typedef struct {
QemuMutex lock;
GList *records;
} QFileMonitorTestData;
static QemuMutex evlock;
static bool evstopping;
static bool evrunning;
static bool debug;
/*
* Main function for a background thread that is
* running the event loop during the test
*/
static void *
qemu_file_monitor_test_event_loop(void *opaque G_GNUC_UNUSED)
{
qemu_mutex_lock(&evlock);
while (!evstopping) {
qemu_mutex_unlock(&evlock);
main_loop_wait(true);
qemu_mutex_lock(&evlock);
}
evrunning = false;
qemu_mutex_unlock(&evlock);
return NULL;
}
/*
* File monitor event handler which simply maintains
* an ordered list of all events that it receives
*/
static void
qemu_file_monitor_test_handler(int64_t id,
QFileMonitorEvent event,
const char *filename,
void *opaque)
{
QFileMonitorTestData *data = opaque;
QFileMonitorTestRecord *rec = g_new0(QFileMonitorTestRecord, 1);
if (debug) {
g_printerr("Queue event id %" PRIx64 " event %d file %s\n",
id, event, filename);
}
rec->id = id;
rec->event = event;
rec->filename = g_strdup(filename);
qemu_mutex_lock(&data->lock);
data->records = g_list_append(data->records, rec);
qemu_mutex_unlock(&data->lock);
}
static void
qemu_file_monitor_test_record_free(QFileMonitorTestRecord *rec)
{
g_free(rec->filename);
g_free(rec);
}
/*
* Get the next event record that has been received by
* the file monitor event handler. Since events are
* emitted in the background thread running the event
* loop, we can't assume there is a record available
* immediately. Thus we will sleep for up to 5 seconds
* to wait for the event to be queued for us.
*/
static QFileMonitorTestRecord *
qemu_file_monitor_test_next_record(QFileMonitorTestData *data,
QFileMonitorTestRecord *pushback)
{
GTimer *timer = g_timer_new();
QFileMonitorTestRecord *record = NULL;
GList *tmp;
qemu_mutex_lock(&data->lock);
while (!data->records && g_timer_elapsed(timer, NULL) < 5) {
qemu_mutex_unlock(&data->lock);
usleep(10 * 1000);
qemu_mutex_lock(&data->lock);
}
if (data->records) {
record = data->records->data;
if (pushback) {
data->records->data = pushback;
} else {
tmp = data->records;
data->records = g_list_remove_link(data->records, tmp);
g_list_free(tmp);
}
} else if (pushback) {
qemu_file_monitor_test_record_free(pushback);
}
qemu_mutex_unlock(&data->lock);
g_timer_destroy(timer);
return record;
}
/*
* Check whether the event record we retrieved matches
* data we were expecting to see for the event
*/
static bool
qemu_file_monitor_test_expect(QFileMonitorTestData *data,
int64_t id,
QFileMonitorEvent event,
const char *filename,
bool swapnext)
{
QFileMonitorTestRecord *rec;
bool ret = false;
rec = qemu_file_monitor_test_next_record(data, NULL);
retry:
if (!rec) {
g_printerr("Missing event watch id %" PRIx64 " event %d file %s\n",
id, event, filename);
return false;
}
if (id != rec->id) {
if (swapnext) {
rec = qemu_file_monitor_test_next_record(data, rec);
swapnext = false;
goto retry;
}
g_printerr("Expected watch id %" PRIx64 " but got %" PRIx64 "\n",
id, rec->id);
goto cleanup;
}
if (event != rec->event) {
g_printerr("Expected event %d but got %d\n", event, rec->event);
goto cleanup;
}
if (!g_str_equal(filename, rec->filename)) {
g_printerr("Expected filename %s but got %s\n",
filename, rec->filename);
goto cleanup;
}
ret = true;
cleanup:
qemu_file_monitor_test_record_free(rec);
return ret;
}
static void
test_file_monitor_events(void)
{
int64_t watch0 = 0;
int64_t watch1 = 0;
int64_t watch2 = 0;
int64_t watch3 = 0;
int64_t watch4 = 0;
int64_t watch5 = 0;
QFileMonitorTestOp ops[] = {
{ .type = QFILE_MONITOR_TEST_OP_ADD_WATCH,
.filesrc = NULL, .watchid = &watch0 },
{ .type = QFILE_MONITOR_TEST_OP_ADD_WATCH,
.filesrc = "one.txt", .watchid = &watch1 },
{ .type = QFILE_MONITOR_TEST_OP_ADD_WATCH,
.filesrc = "two.txt", .watchid = &watch2 },
{ .type = QFILE_MONITOR_TEST_OP_CREATE,
.filesrc = "one.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch1,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_CREATE,
.filesrc = "two.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch2,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_CREATE,
.filesrc = "three.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "three.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_UNLINK,
.filesrc = "three.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "three.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_DELETED },
{ .type = QFILE_MONITOR_TEST_OP_RENAME,
.filesrc = "one.txt", .filedst = "two.txt" },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_DELETED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch1,
.eventid = QFILE_MONITOR_EVENT_DELETED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch2,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_APPEND,
.filesrc = "two.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_MODIFIED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch2,
.eventid = QFILE_MONITOR_EVENT_MODIFIED },
{ .type = QFILE_MONITOR_TEST_OP_TOUCH,
.filesrc = "two.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_ATTRIBUTES },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch2,
.eventid = QFILE_MONITOR_EVENT_ATTRIBUTES },
{ .type = QFILE_MONITOR_TEST_OP_DEL_WATCH,
.filesrc = "one.txt", .watchid = &watch1 },
{ .type = QFILE_MONITOR_TEST_OP_ADD_WATCH,
.filesrc = "one.txt", .watchid = &watch3 },
{ .type = QFILE_MONITOR_TEST_OP_CREATE,
.filesrc = "one.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch3,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_DEL_WATCH,
.filesrc = "one.txt", .watchid = &watch3 },
{ .type = QFILE_MONITOR_TEST_OP_UNLINK,
.filesrc = "one.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_DELETED },
{ .type = QFILE_MONITOR_TEST_OP_MKDIR,
.filesrc = "fish", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "fish", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_ADD_WATCH,
.filesrc = "fish/", .watchid = &watch4 },
{ .type = QFILE_MONITOR_TEST_OP_ADD_WATCH,
.filesrc = "fish/one.txt", .watchid = &watch5 },
{ .type = QFILE_MONITOR_TEST_OP_CREATE,
.filesrc = "fish/one.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch4,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch5,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_DEL_WATCH,
.filesrc = "fish/one.txt", .watchid = &watch5 },
{ .type = QFILE_MONITOR_TEST_OP_RENAME,
.filesrc = "fish/one.txt", .filedst = "two.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "one.txt", .watchid = &watch4,
.eventid = QFILE_MONITOR_EVENT_DELETED },
#ifdef __FreeBSD__
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_DELETED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch2,
.eventid = QFILE_MONITOR_EVENT_DELETED },
#endif
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch2,
.eventid = QFILE_MONITOR_EVENT_CREATED },
{ .type = QFILE_MONITOR_TEST_OP_RMDIR,
.filesrc = "fish", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "", .watchid = &watch4,
.eventid = QFILE_MONITOR_EVENT_IGNORED,
.swapnext = true },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "fish", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_DELETED },
{ .type = QFILE_MONITOR_TEST_OP_DEL_WATCH,
.filesrc = "fish", .watchid = &watch4 },
{ .type = QFILE_MONITOR_TEST_OP_UNLINK,
.filesrc = "two.txt", },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch0,
.eventid = QFILE_MONITOR_EVENT_DELETED },
{ .type = QFILE_MONITOR_TEST_OP_EVENT,
.filesrc = "two.txt", .watchid = &watch2,
.eventid = QFILE_MONITOR_EVENT_DELETED },
{ .type = QFILE_MONITOR_TEST_OP_DEL_WATCH,
.filesrc = "two.txt", .watchid = &watch2 },
{ .type = QFILE_MONITOR_TEST_OP_DEL_WATCH,
.filesrc = NULL, .watchid = &watch0 },
};
Error *local_err = NULL;
GError *gerr = NULL;
QFileMonitor *mon = qemu_file_monitor_new(&local_err);
QemuThread th;
GTimer *timer;
gchar *dir = NULL;
int err = -1;
gsize i;
char *pathsrc = NULL;
char *pathdst = NULL;
QFileMonitorTestData data;
GHashTable *ids = g_hash_table_new(g_int64_hash, g_int64_equal);
char *travis_arch;
qemu_mutex_init(&data.lock);
data.records = NULL;
/*
* This test does not work on Travis LXD containers since some
* syscalls are blocked in that environment.
*/
travis_arch = getenv("TRAVIS_ARCH");
if (travis_arch && !g_str_equal(travis_arch, "x86_64")) {
g_test_skip("Test does not work on non-x86 Travis containers.");
return;
}
/*
* The file monitor needs the main loop running in
* order to receive events from inotify. We must
* thus spawn a background thread to run an event
* loop impl, while this thread triggers the
* actual file operations we're testing
*/
evrunning = 1;
evstopping = 0;
qemu_thread_create(&th, "event-loop",
qemu_file_monitor_test_event_loop, NULL,
QEMU_THREAD_JOINABLE);
if (local_err) {
g_printerr("File monitoring not available: %s",
error_get_pretty(local_err));
error_free(local_err);
return;
}
dir = g_dir_make_tmp("test-util-filemonitor-XXXXXX",
&gerr);
if (!dir) {
g_printerr("Unable to create tmp dir %s",
gerr->message);
g_error_free(gerr);
abort();
}
/*
* Run through the operation sequence validating events
* as we go
*/
for (i = 0; i < G_N_ELEMENTS(ops); i++) {
const QFileMonitorTestOp *op = &(ops[i]);
int fd;
struct utimbuf ubuf;
char *watchdir;
const char *watchfile;
pathsrc = g_strdup_printf("%s/%s", dir, op->filesrc);
if (op->filedst) {
pathdst = g_strdup_printf("%s/%s", dir, op->filedst);
}
switch (op->type) {
case QFILE_MONITOR_TEST_OP_ADD_WATCH:
if (debug) {
g_printerr("Add watch %s %s\n",
dir, op->filesrc);
}
if (op->filesrc && strchr(op->filesrc, '/')) {
watchdir = g_strdup_printf("%s/%s", dir, op->filesrc);
watchfile = strrchr(watchdir, '/');
*(char *)watchfile = '\0';
watchfile++;
if (*watchfile == '\0') {
watchfile = NULL;
}
} else {
watchdir = g_strdup(dir);
watchfile = op->filesrc;
}
*op->watchid =
qemu_file_monitor_add_watch(mon,
watchdir,
watchfile,
qemu_file_monitor_test_handler,
&data,
&local_err);
g_free(watchdir);
if (*op->watchid < 0) {
g_printerr("Unable to add watch %s",
error_get_pretty(local_err));
error_free(local_err);
goto cleanup;
}
if (debug) {
g_printerr("Watch ID %" PRIx64 "\n", *op->watchid);
}
if (g_hash_table_contains(ids, op->watchid)) {
g_printerr("Watch ID %" PRIx64 "already exists", *op->watchid);
goto cleanup;
}
g_hash_table_add(ids, op->watchid);
break;
case QFILE_MONITOR_TEST_OP_DEL_WATCH:
if (debug) {
g_printerr("Del watch %s %" PRIx64 "\n", dir, *op->watchid);
}
if (op->filesrc && strchr(op->filesrc, '/')) {
watchdir = g_strdup_printf("%s/%s", dir, op->filesrc);
watchfile = strrchr(watchdir, '/');
*(char *)watchfile = '\0';
} else {
watchdir = g_strdup(dir);
}
g_hash_table_remove(ids, op->watchid);
qemu_file_monitor_remove_watch(mon,
watchdir,
*op->watchid);
g_free(watchdir);
break;
case QFILE_MONITOR_TEST_OP_EVENT:
if (debug) {
g_printerr("Event id=%" PRIx64 " event=%d file=%s\n",
*op->watchid, op->eventid, op->filesrc);
}
if (!qemu_file_monitor_test_expect(&data, *op->watchid,
op->eventid, op->filesrc,
op->swapnext))
goto cleanup;
break;
case QFILE_MONITOR_TEST_OP_CREATE:
if (debug) {
g_printerr("Create %s\n", pathsrc);
}
fd = open(pathsrc, O_WRONLY | O_CREAT, 0700);
if (fd < 0) {
g_printerr("Unable to create %s: %s",
pathsrc, strerror(errno));
goto cleanup;
}
close(fd);
break;
case QFILE_MONITOR_TEST_OP_APPEND:
if (debug) {
g_printerr("Append %s\n", pathsrc);
}
fd = open(pathsrc, O_WRONLY | O_APPEND, 0700);
if (fd < 0) {
g_printerr("Unable to open %s: %s",
pathsrc, strerror(errno));
goto cleanup;
}
if (write(fd, "Hello World", 10) != 10) {
g_printerr("Unable to write %s: %s",
pathsrc, strerror(errno));
close(fd);
goto cleanup;
}
close(fd);
break;
case QFILE_MONITOR_TEST_OP_TRUNC:
if (debug) {
g_printerr("Truncate %s\n", pathsrc);
}
if (truncate(pathsrc, 4) < 0) {
g_printerr("Unable to truncate %s: %s",
pathsrc, strerror(errno));
goto cleanup;
}
break;
case QFILE_MONITOR_TEST_OP_RENAME:
if (debug) {
g_printerr("Rename %s -> %s\n", pathsrc, pathdst);
}
if (rename(pathsrc, pathdst) < 0) {
g_printerr("Unable to rename %s to %s: %s",
pathsrc, pathdst, strerror(errno));
goto cleanup;
}
break;
case QFILE_MONITOR_TEST_OP_UNLINK:
if (debug) {
g_printerr("Unlink %s\n", pathsrc);
}
if (unlink(pathsrc) < 0) {
g_printerr("Unable to unlink %s: %s",
pathsrc, strerror(errno));
goto cleanup;
}
break;
case QFILE_MONITOR_TEST_OP_TOUCH:
if (debug) {
g_printerr("Touch %s\n", pathsrc);
}
ubuf.actime = 1024;
ubuf.modtime = 1025;
if (utime(pathsrc, &ubuf) < 0) {
g_printerr("Unable to touch %s: %s",
pathsrc, strerror(errno));
goto cleanup;
}
break;
case QFILE_MONITOR_TEST_OP_MKDIR:
if (debug) {
g_printerr("Mkdir %s\n", pathsrc);
}
if (g_mkdir_with_parents(pathsrc, 0700) < 0) {
g_printerr("Unable to mkdir %s: %s",
pathsrc, strerror(errno));
goto cleanup;
}
break;
case QFILE_MONITOR_TEST_OP_RMDIR:
if (debug) {
g_printerr("Rmdir %s\n", pathsrc);
}
if (rmdir(pathsrc) < 0) {
g_printerr("Unable to rmdir %s: %s",
pathsrc, strerror(errno));
goto cleanup;
}
break;
default:
g_assert_not_reached();
}
g_free(pathsrc);
g_free(pathdst);
pathsrc = pathdst = NULL;
}
g_assert_cmpint(g_hash_table_size(ids), ==, 0);
err = 0;
cleanup:
g_free(pathsrc);
g_free(pathdst);
qemu_mutex_lock(&evlock);
evstopping = 1;
timer = g_timer_new();
while (evrunning && g_timer_elapsed(timer, NULL) < 5) {
qemu_mutex_unlock(&evlock);
usleep(10 * 1000);
qemu_mutex_lock(&evlock);
}
qemu_mutex_unlock(&evlock);
if (g_timer_elapsed(timer, NULL) >= 5) {
g_printerr("Event loop failed to quit after 5 seconds\n");
}
g_timer_destroy(timer);
qemu_file_monitor_free(mon);
g_list_foreach(data.records,
(GFunc)qemu_file_monitor_test_record_free, NULL);
g_list_free(data.records);
qemu_mutex_destroy(&data.lock);
if (dir) {
for (i = 0; i < G_N_ELEMENTS(ops); i++) {
const QFileMonitorTestOp *op = &(ops[i]);
char *path = g_strdup_printf("%s/%s",
dir, op->filesrc);
if (op->type == QFILE_MONITOR_TEST_OP_MKDIR) {
rmdir(path);
g_free(path);
} else {
unlink(path);
g_free(path);
if (op->filedst) {
path = g_strdup_printf("%s/%s",
dir, op->filedst);
unlink(path);
g_free(path);
}
}
}
if (rmdir(dir) < 0) {
g_printerr("Failed to remove %s: %s\n",
dir, strerror(errno));
abort();
}
}
g_hash_table_unref(ids);
g_free(dir);
g_assert(err == 0);
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
qemu_init_main_loop(&error_abort);
qemu_mutex_init(&evlock);
debug = getenv("FILEMONITOR_DEBUG") != NULL;
g_test_add_func("/util/filemonitor", test_file_monitor_events);
return g_test_run();
}
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