diff options
Diffstat (limited to 'src/test')
| -rw-r--r-- | src/test/test-util.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/test-util.c b/src/test/test-util.c index 4bb51545be..0c0d2f67f8 100644 --- a/src/test/test-util.c +++ b/src/test/test-util.c @@ -1464,6 +1464,42 @@ static void test_uid_ptr(void) { assert_se(PTR_TO_UID(UID_TO_PTR(1000)) == 1000); } +static void test_sparse_write_one(int fd, const char *buffer, size_t n) { + char check[n]; + + assert_se(lseek(fd, 0, SEEK_SET) == 0); + assert_se(ftruncate(fd, 0) >= 0); + assert_se(sparse_write(fd, buffer, n, 4) == (ssize_t) n); + + assert_se(lseek(fd, 0, SEEK_CUR) == (off_t) n); + assert_se(ftruncate(fd, n) >= 0); + + assert_se(lseek(fd, 0, SEEK_SET) == 0); + assert_se(read(fd, check, n) == (ssize_t) n); + + assert_se(memcmp(buffer, check, n) == 0); +} + +static void test_sparse_write(void) { + const char test_a[] = "test"; + const char test_b[] = "\0\0\0\0test\0\0\0\0"; + const char test_c[] = "\0\0test\0\0\0\0"; + const char test_d[] = "\0\0test\0\0\0test\0\0\0\0test\0\0\0\0\0test\0\0\0test\0\0\0\0test\0\0\0\0\0\0\0\0"; + const char test_e[] = "test\0\0\0\0test"; + _cleanup_close_ int fd = -1; + char fn[] = "/tmp/sparseXXXXXX"; + + fd = mkostemp(fn, O_CLOEXEC); + assert_se(fd >= 0); + unlink(fn); + + test_sparse_write_one(fd, test_a, sizeof(test_a)); + test_sparse_write_one(fd, test_b, sizeof(test_b)); + test_sparse_write_one(fd, test_c, sizeof(test_c)); + test_sparse_write_one(fd, test_d, sizeof(test_d)); + test_sparse_write_one(fd, test_e, sizeof(test_e)); +} + int main(int argc, char *argv[]) { log_parse_environment(); log_open(); @@ -1540,6 +1576,7 @@ int main(int argc, char *argv[]) { test_raw_clone(); test_same_fd(); test_uid_ptr(); + test_sparse_write(); return 0; } |