Re: [RFC PATCH v2 5/8] selftests/fuse: factor-out test fixture setup/teardown

[Luis Henriques]

On Tue, Aug 18 2026, Amir Goldstein wrote:

> On Mon, Aug 17, 2026 at 4:11 PM Luis Henriques <luis@xxxxxxxxxx> wrote:
>>
>> In order to reduce new tests setup/teardown code duplication, factor-out
>> these functions from the existing acl_cache test.
>
> When I read this I thought you were going to share these helpers with the
> new symlink and readdir cache tests, but you did not.
>
> Maybe a fuse_common.c would make sense to reduce boiler plate
> in new fuse tests.
>
> These helpers and fixture look pretty similar in all three tests.

True.  I'll try to reduce the duplication by moving the common place.

Cheers,
-- 
Luís


> Thanks,
> Amir.
>
>
>>
>> Signed-off-by: Luis Henriques <luis@xxxxxxxxxx>
>> ---
>>  .../filesystems/fuse/fuse_acl_cache_test.c    | 82 ++++++++++++-------
>>  1 file changed, 53 insertions(+), 29 deletions(-)
>>
>> diff --git a/tools/testing/selftests/filesystems/fuse/fuse_acl_cache_test.c b/tools/testing/selftests/filesystems/fuse/fuse_acl_cache_test.c
>> index 2411a6e285f1..8bdc90572be2 100644
>> --- a/tools/testing/selftests/filesystems/fuse/fuse_acl_cache_test.c
>> +++ b/tools/testing/selftests/filesystems/fuse/fuse_acl_cache_test.c
>> @@ -50,6 +50,8 @@
>>
>>  #include "kselftest_harness.h"
>>
>> +#define MAX_ERR_MSG 256
>> +
>>  /* ---- ACL binary encoding ------------------------------------------------ */
>>  /*
>>   * POSIX ACL v2 xattr format (little-endian):
>> @@ -193,52 +195,74 @@ FIXTURE(acl_cache) {
>>         pthread_t            thread;
>>  };
>>
>> -FIXTURE_SETUP(acl_cache)
>> +int fs_setup(struct fuse_session **se, char *mountpoint, char *file_path,
>> +            pthread_t *thread, char *err)
>>  {
>>         char *fuse_argv[] = { "fuse_acl_cache_test", NULL };
>>         struct fuse_args args = FUSE_ARGS_INIT(1, fuse_argv);
>>
>> -       g_ds.acl            = acl_a;
>> -       g_ds.acl_size       = sizeof(acl_a);
>> -       g_ds.getxattr_count = 0;
>> -
>> -       strcpy(self->mountpoint, "/tmp/acl_cache_test_XXXXXX");
>> -       if (!mkdtemp(self->mountpoint))
>> -               SKIP(return, "mkdtemp: %s", strerror(errno));
>> +       strcpy(mountpoint, "/tmp/acl_cache_test_XXXXXX");
>> +       if (!mkdtemp(mountpoint)) {
>> +               snprintf(err, MAX_ERR_MSG, "mkdtemp: %s", strerror(errno));
>> +               return -1;
>> +       }
>>
>> -       snprintf(self->file_path, sizeof(self->file_path),
>> -                "%s/" FILE_NAME, self->mountpoint);
>> +       snprintf(file_path, PATH_MAX, "%s/" FILE_NAME, mountpoint);
>>
>> -       self->se = fuse_session_new(&args, &fs_ops, sizeof(fs_ops), NULL);
>> -       if (!self->se) {
>> -               rmdir(self->mountpoint);
>> -               SKIP(return, "fuse_session_new failed");
>> +       *se = fuse_session_new(&args, &fs_ops, sizeof(fs_ops), NULL);
>> +       if (!*se) {
>> +               rmdir(mountpoint);
>> +               snprintf(err, MAX_ERR_MSG, "fuse_session_new failed");
>> +               return -1;
>>         }
>>
>> -       if (fuse_session_mount(self->se, self->mountpoint)) {
>> -               fuse_session_destroy(self->se);
>> -               rmdir(self->mountpoint);
>> -               SKIP(return, "fuse_session_mount failed "
>> -                            "(missing fusermount3 or insufficient privileges)");
>> +       if (fuse_session_mount(*se, mountpoint)) {
>> +               fuse_session_destroy(*se);
>> +               rmdir(mountpoint);
>> +               snprintf(err, MAX_ERR_MSG, "fuse_session_mount failed "
>> +                       "(missing fusermount3 or insufficient privileges)");
>> +               return -1;
>>         }
>>
>> -       if (pthread_create(&self->thread, NULL, run_daemon, self->se)) {
>> -               fuse_session_unmount(self->se);
>> -               fuse_session_destroy(self->se);
>> -               rmdir(self->mountpoint);
>> -               SKIP(return, "pthread_create: %s", strerror(errno));
>> +       if (pthread_create(thread, NULL, run_daemon, *se)) {
>> +               fuse_session_unmount(*se);
>> +               fuse_session_destroy(*se);
>> +               rmdir(mountpoint);
>> +               snprintf(err, MAX_ERR_MSG, "pthread_create: %s", strerror(errno));
>> +               return -1;
>>         }
>>
>>         fuse_opt_free_args(&args);
>> +
>> +       return 0;
>> +}
>> +
>> +static void fs_teardown(struct fuse_session *se, pthread_t thread,
>> +                       char *mountpoint)
>> +{
>> +       fuse_session_exit(se);
>> +       fuse_session_unmount(se);
>> +       pthread_join(thread, NULL);
>> +       fuse_session_destroy(se);
>> +       rmdir(mountpoint);
>> +}
>> +
>> +FIXTURE_SETUP(acl_cache)
>> +{
>> +       char err[MAX_ERR_MSG];
>> +
>> +       g_ds.acl            = acl_a;
>> +       g_ds.acl_size       = sizeof(acl_a);
>> +       g_ds.getxattr_count = 0;
>> +
>> +       if (fs_setup(&self->se, self->mountpoint, self->file_path,
>> +                    &self->thread, err))
>> +               SKIP(return, err);
>>  }
>>
>>  FIXTURE_TEARDOWN(acl_cache)
>>  {
>> -       fuse_session_exit(self->se);
>> -       fuse_session_unmount(self->se);
>> -       pthread_join(self->thread, NULL);
>> -       fuse_session_destroy(self->se);
>> -       rmdir(self->mountpoint);
>> +       fs_teardown(self->se, self->thread, self->mountpoint);
>>  }
>>
>>  static int do_force_statx(const char *path)