diff options
| -rw-r--r-- | testsuites/fstests/fsrdwr/init.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/testsuites/fstests/fsrdwr/init.c b/testsuites/fstests/fsrdwr/init.c index ae7ed7e615..c2f3978f6f 100644 --- a/testsuites/fstests/fsrdwr/init.c +++ b/testsuites/fstests/fsrdwr/init.c @@ -549,6 +549,199 @@ truncate_to_zero (void) test_case_leave (); } +static void +random_fill (char *dst, size_t n) +{ + static uint32_t u = 0x12345678; + uint32_t v = u; + uint32_t w; + size_t i = 0; + int j = 0; + + while (i < n) { + if (j == 0) { + v *= 1664525; + v += 1013904223; + w = v; + } else { + w >>= 8; + } + + dst [i] = (char) w; + + ++i; + j = (j + 1) % 4; + } + + u = v; +} + +static void +block_rw_lseek (int fd, size_t pos) +{ + off_t actual; + + actual = lseek (fd, pos, SEEK_SET); + rtems_test_assert (actual == pos); +} + +static void +block_rw_write (int fd, char *out, size_t pos, size_t size) +{ + ssize_t n; + + random_fill (out + pos, size); + + block_rw_lseek (fd, pos); + + n = write (fd, out + pos, size); + rtems_test_assert (n == (ssize_t) size); +} + +static void +block_rw_write_cont (int fd, char *out, size_t *pos, size_t size) +{ + ssize_t n; + + random_fill (out + *pos, size); + + n = write (fd, out + *pos, size); + rtems_test_assert (n == (ssize_t) size); + + *pos += size; +} + +static void +block_rw_check (int fd, const char *out, char *in, size_t size) +{ + ssize_t n; + off_t file_size; + + file_size = lseek (fd, 0, SEEK_END); + rtems_test_assert (file_size == size); + + block_rw_lseek (fd, 0); + + n = read (fd, in, size); + rtems_test_assert (n == (ssize_t) size); + + rtems_test_assert (memcmp (out, in, size) == 0); +} + +static void +block_rw_prepare (const char *t, int fd, char *out, size_t size) +{ + int status; + + printf ("test case: %s\n", t); + + memset (out, 0, size); + + status = ftruncate (fd, 0); + rtems_test_assert (status == 0); + + block_rw_lseek (fd, 0); +} + +static void +block_rw_case_0 (int fd, size_t block_size, char *out, char *in) +{ + const size_t size = 3 * block_size + 1; + + block_rw_prepare (__func__, fd, out, size); + block_rw_write (fd, out, 0, size); + block_rw_check (fd, out, in, size); +} + +static void +block_rw_case_1 (int fd, size_t block_size, char *out, char *in) +{ + const size_t size = 2 * block_size; + + block_rw_prepare (__func__, fd, out, size); + block_rw_write (fd, out, block_size, block_size); + block_rw_check (fd, out, in, size); +} + +static void +block_rw_case_2 (int fd, size_t block_size, char *out, char *in) +{ + const size_t size = (5 * block_size) / 2; + + block_rw_prepare (__func__, fd, out, size); + block_rw_write (fd, out, (3 * block_size) / 2, block_size); + block_rw_check (fd, out, in, size); +} + +static void +block_rw_case_3 (int fd, size_t block_size, char *out, char *in) +{ + const size_t size = 2 * block_size; + + block_rw_prepare (__func__, fd, out, size); + block_rw_write (fd, out, block_size, block_size / 3); + block_rw_write (fd, out, 2 * block_size - block_size / 3, block_size / 3); + block_rw_check (fd, out, in, size); +} + +static void +block_rw_case_4 (int fd, size_t block_size, char *out, char *in) +{ + const size_t size = 3 * block_size + 1; + size_t pos = 0; + + block_rw_prepare (__func__, fd, out, size); + block_rw_write_cont (fd, out, &pos, block_size); + block_rw_write_cont (fd, out, &pos, block_size / 2); + block_rw_write_cont (fd, out, &pos, block_size); + block_rw_write_cont (fd, out, &pos, block_size / 2); + block_rw_write_cont (fd, out, &pos, 1); + block_rw_check (fd, out, in, size); +} + +static void +block_read_and_write (void) +{ + int fd; + struct stat st; + int status; + size_t block_size; + size_t size; + char *out; + char *in; + + test_case_enter (__func__); + + fd = open ("file", O_RDWR | O_CREAT | O_TRUNC, mode); + rtems_test_assert (fd >= 0); + + status = fstat (fd, &st); + rtems_test_assert (status == 0); + + block_size = st.st_blksize; + size = 3 * block_size + 1; + + out = malloc (size); + rtems_test_assert (out != NULL); + + in = malloc (size); + rtems_test_assert (in != NULL); + + block_rw_case_0 (fd, block_size, out, in); + block_rw_case_1 (fd, block_size, out, in); + block_rw_case_2 (fd, block_size, out, in); + block_rw_case_3 (fd, block_size, out, in); + block_rw_case_4 (fd, block_size, out, in); + + status = close (fd); + rtems_test_assert (status == 0); + + free (out); + free (in); + + test_case_leave (); +} + void test (void) { @@ -556,4 +749,5 @@ test (void) lseek_test (); truncate_test03 (); truncate_to_zero (); + block_read_and_write (); } |