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Changed callbacks to take user-provided context directly

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This is a style change to make littlefs's callbacks consistent with most
callback declarations found in C. That is, taking in a user-provided
`void*`.

Previously, these callbacks took a pointer to the config struct itself,
which indirectly contained a user provided context, and this gets the
job done, but taking in a callback with a `void*` is arguably more
expected, has a better chance of integrating with C++/OS-specific code,
and is more likely to be optimized out by a clever compiler.

---

As a part of these changes, the geometry for the test bds needed to be
moved into bd specific configuration objects. This is a good change as
it also allows for testing situations where littlefs's geometry does not
match the underlying bd.
This commit is contained in:
Christopher Haster
2020-11-26 09:16:20 -06:00
parent a549413077
commit a7cdd563f6
15 changed files with 383 additions and 397 deletions
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6
tests/test_evil.toml
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@@ -158,12 +158,12 @@ code = '''
lfs_ctz_fromle32(&ctz);
// rewrite block to contain bad pointer
uint8_t bbuffer[LFS_BLOCK_SIZE];
cfg.read(&cfg, ctz.head, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
lfs_testbd_read(&bd, ctz.head, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
uint32_t bad = lfs_tole32(0xcccccccc);
memcpy(&bbuffer[0], &bad, sizeof(bad));
memcpy(&bbuffer[4], &bad, sizeof(bad));
cfg.erase(&cfg, ctz.head) => 0;
cfg.prog(&cfg, ctz.head, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
lfs_testbd_erase(&bd, ctz.head) => 0;
lfs_testbd_prog(&bd, ctz.head, 0, bbuffer, LFS_BLOCK_SIZE) => 0;
lfs_deinit(&lfs) => 0;
// test that accessing our bad file fails, note there's a number