Christopher Haster
41b9caf25d
- lfs->mleaf_bits -> lfs->mbits - lfsr_mleafweight -> lfsr_mweight - lfsr_midbmask -> lfsr_mid_bid - lfsr_midrmask -> lfsr_mid_rid - added lfsr_mid_cbid - added lfsr_mid_crid - added lfsr_mdir_* variants
4401 lines
142 KiB
TOML
4401 lines
142 KiB
TOML
# Test the high-level metadata tree in the core of littlefs
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after = ['test_rbyd', 'test_btree']
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# maximize lookahead buffer, we don't actually gc so we only get one pass
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# of the disk for these tests
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defines.LOOKAHEAD_SIZE = 'BLOCK_COUNT / 8'
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# some helper functions
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in = 'lfs.c'
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code = '''
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static lfs_ssize_t lfsr_mdir_get(lfs_t *lfs, const lfsr_mdir_t *mdir,
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lfs_ssize_t rid, lfsr_tag_t tag, void *buffer, lfs_size_t size) {
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lfsr_data_t data;
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int err = lfsr_mdir_lookup(lfs, mdir, rid, tag, NULL, &data);
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if (err) {
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return err;
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}
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return lfsr_data_read(lfs, &data, buffer, size);
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}
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'''
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# test a single mroot
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[cases.test_mtree_mroot]
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code = '''
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lfs_t lfs;
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lfsr_format(&lfs, CFG) => 0;
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lfsr_mount(&lfs, CFG) => 0;
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lfsr_unmount(&lfs) => 0;
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'''
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# test a single mroot with attributes
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[cases.test_mtree_mroot_attrs]
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defines.N = [1, 3]
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in = 'lfs.c'
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code = '''
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const char *alphas = "abcdefghijklmnopqrstuvwxyz";
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lfs_t lfs;
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lfsr_format(&lfs, CFG) => 0;
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lfsr_mount(&lfs, CFG) => 0;
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lfs_alloc_ack(&lfs);
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for (lfs_size_t i = 0; i < N; i++) {
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(-1, UATTR(i), 0, BUF(&alphas[i % 26], 1)))) => 0;
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}
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for (lfs_size_t i = 0; i < N; i++) {
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uint8_t buffer[1];
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lfsr_mdir_get(&lfs, &lfs.mroot,
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-1, LFSR_TAG_UATTR(i), buffer, 1) => 1;
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assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
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}
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lfsr_unmount(&lfs) => 0;
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// check things stay sane after remount
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lfsr_mount(&lfs, CFG) => 0;
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for (lfs_size_t i = 0; i < N; i++) {
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uint8_t buffer[1];
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lfsr_mdir_get(&lfs, &lfs.mroot,
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-1, LFSR_TAG_UATTR(i), buffer, 1) => 1;
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assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
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}
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lfsr_unmount(&lfs) => 0;
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'''
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# test a single mroot with forced compaction
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[cases.test_mtree_mroot_compact]
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defines.N = [1, 3]
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in = 'lfs.c'
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code = '''
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const char *alphas = "abcdefghijklmnopqrstuvwxyz";
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lfs_t lfs;
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lfsr_format(&lfs, CFG) => 0;
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lfsr_mount(&lfs, CFG) => 0;
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lfs_alloc_ack(&lfs);
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for (lfs_size_t i = 0; i < N; i++) {
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// force mroot to compact
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lfs.mroot.u.rbyd.eoff = -1;
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(-1, UATTR(i), 0, BUF(&alphas[i % 26], 1)))) => 0;
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}
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for (lfs_size_t i = 0; i < N; i++) {
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uint8_t buffer[1];
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lfsr_mdir_get(&lfs, &lfs.mroot,
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-1, LFSR_TAG_UATTR(i), buffer, 1) => 1;
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assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
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}
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lfsr_unmount(&lfs) => 0;
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// check things stay sane after remount
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lfsr_mount(&lfs, CFG) => 0;
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for (lfs_size_t i = 0; i < N; i++) {
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uint8_t buffer[1];
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lfsr_mdir_get(&lfs, &lfs.mroot,
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-1, LFSR_TAG_UATTR(i), buffer, 1) => 1;
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assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
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}
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lfsr_unmount(&lfs) => 0;
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'''
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# test a single mroot with many commits
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[cases.test_mtree_mroot_many_commits]
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defines.N = [5, 5000]
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in = 'lfs.c'
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code = '''
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const char *alphas = "abcdefghijklmnopqrstuvwxyz";
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lfs_t lfs;
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lfsr_format(&lfs, CFG) => 0;
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lfsr_mount(&lfs, CFG) => 0;
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lfs_alloc_ack(&lfs);
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for (lfs_size_t i = 0; i < N; i++) {
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(-1, UATTR(1), 0, BUF(&alphas[i % 26], 1)))) => 0;
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uint8_t buffer[4];
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lfsr_mdir_get(&lfs, &lfs.mroot,
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-1, LFSR_TAG_UATTR(1), buffer, 4) => 1;
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assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
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}
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uint8_t buffer[4];
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lfsr_mdir_get(&lfs, &lfs.mroot,
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-1, LFSR_TAG_UATTR(1), buffer, 4) => 1;
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assert(memcmp(buffer, &alphas[(N-1) % 26], 1) == 0);
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lfsr_unmount(&lfs) => 0;
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// check things stay sane after remount
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lfsr_mount(&lfs, CFG) => 0;
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lfsr_mdir_get(&lfs, &lfs.mroot,
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-1, LFSR_TAG_UATTR(1), buffer, 4) => 1;
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assert(memcmp(buffer, &alphas[(N-1) % 26], 1) == 0);
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lfsr_unmount(&lfs) => 0;
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'''
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## Splitting operations ##
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# specific split corner cases
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[cases.test_mtree_uninline]
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# this should be set so only one entry can fit in a metadata block
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defines.SIZE = 'BLOCK_SIZE / 4'
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in = 'lfs.c'
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code = '''
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lfs_t lfs;
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lfsr_format(&lfs, CFG) => 0;
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lfsr_mount(&lfs, CFG) => 0;
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lfs_alloc_ack(&lfs);
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// remove root bookmark for now
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(0, RM, -1, NULL))) => 0;
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// prepare mroot with a large attr so the next entry can not fit
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uint8_t buffer[SIZE];
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memset(buffer, 'a', SIZE);
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
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// create a large entry that needs to be uninlined (but not split!)
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memset(buffer, 'b', SIZE);
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
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// force mroot to compact
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lfs.mroot.u.rbyd.eoff = -1;
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lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
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// assert mdir was unininlined correctly
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assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
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// assert mroot now has no entries
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assert(lfs.mroot.u.m.weight == 0);
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// assert that our attr is still in the mroot
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lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "a", 1) == 0);
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// assert that our entry is still in the mtree
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lfsr_mdir_t mdir;
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lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "b", 1) == 0);
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lfsr_unmount(&lfs) => 0;
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// check things stay sane after remount
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lfsr_mount(&lfs, CFG) => 0;
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// assert mdir was unininlined correctly
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assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
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// assert mroot now has no entries
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assert(lfs.mroot.u.m.weight == 0);
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// assert that our attr is still in the mroot
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lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "a", 1) == 0);
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// assert that our entry is still in the mtree
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lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "b", 1) == 0);
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lfsr_unmount(&lfs) => 0;
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'''
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[cases.test_mtree_uninline_split]
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# this should be set so only one entry can fit in a metadata block
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defines.SIZE = 'BLOCK_SIZE / 4'
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in = 'lfs.c'
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code = '''
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lfs_t lfs;
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lfsr_format(&lfs, CFG) => 0;
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lfsr_mount(&lfs, CFG) => 0;
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lfs_alloc_ack(&lfs);
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// remove root bookmark for now
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(0, RM, -1, NULL))) => 0;
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// create 2 large entries that needs to be uninlined and split
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uint8_t buffer[SIZE];
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memset(buffer, 'a', SIZE);
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
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memset(buffer, 'b', SIZE);
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
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// force mroot to compact
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lfs.mroot.u.rbyd.eoff = -1;
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lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
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// assert mdirs were unininlined and split
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assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
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// assert mroot now has no entries
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assert(lfs.mroot.u.m.weight == 0);
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// assert that our entries are still in the mtree
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lfsr_mdir_t mdir;
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lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "a", 1) == 0);
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lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "b", 1) == 0);
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lfsr_unmount(&lfs) => 0;
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// check things stay sane after remount
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lfsr_mount(&lfs, CFG) => 0;
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// assert mdirs were unininlined and split
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assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
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// assert mroot now has no entries
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assert(lfs.mroot.u.m.weight == 0);
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// assert that our entries are still in the mtree
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lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "a", 1) == 0);
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lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "b", 1) == 0);
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lfsr_unmount(&lfs) => 0;
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'''
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[cases.test_mtree_split]
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# this should be set so only one entry can fit in a metadata block
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defines.SIZE = 'BLOCK_SIZE / 4'
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in = 'lfs.c'
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code = '''
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lfs_t lfs;
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lfsr_format(&lfs, CFG) => 0;
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lfsr_mount(&lfs, CFG) => 0;
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lfs_alloc_ack(&lfs);
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// remove root bookmark for now
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(0, RM, -1, NULL))) => 0;
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// create an uninlined mdir
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uint8_t buffer[SIZE];
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memset(buffer, 'a', SIZE);
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
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memset(buffer, 'b', SIZE);
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
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// force mroot to compact
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lfs.mroot.u.rbyd.eoff = -1;
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lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
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// assert mdir was unininlined correctly
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assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
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// assert mroot now has no entries
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assert(lfs.mroot.u.m.weight == 0);
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// now add another large entry to the mdir, forcing a split
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lfsr_mdir_t mdir;
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lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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memset(buffer, 'c', SIZE);
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lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
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LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
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// force mdir to compact
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mdir.u.rbyd.eoff = -1;
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lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
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// assert mdir was split correctly
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assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
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// assert mroot still has no entries
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assert(lfs.mroot.u.m.weight == 0);
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// assert that our attr is still in the mroot
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lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "a", 1) == 0);
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// assert that our entries are still in the mtree
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lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "b", 1) == 0);
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lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "c", 1) == 0);
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lfsr_unmount(&lfs) => 0;
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// check things stay sane after remount
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lfsr_mount(&lfs, CFG) => 0;
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// assert mdir was split correctly
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assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
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// assert mroot still has no entries
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assert(lfs.mroot.u.m.weight == 0);
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// assert that our attr is still in the mroot
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lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "a", 1) == 0);
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// assert that our entries are still in the mtree
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lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "b", 1) == 0);
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lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
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assert(mdir.u.m.weight == 1);
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lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
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buffer, SIZE) => SIZE;
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assert(memcmp(buffer, "c", 1) == 0);
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lfsr_unmount(&lfs) => 0;
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'''
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# try creating a range of entries that may or may not split our mtree
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[cases.test_mtree_split_many]
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defines.N = [5, 10, 20, 40, 80, 160, 320]
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defines.FORCE_COMPACTION = [false, true]
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in = 'lfs.c'
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code = '''
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const char *alphas = "abcdefghijklmnopqrstuvwxyz";
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lfs_t lfs;
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lfsr_format(&lfs, CFG) => 0;
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lfsr_mount(&lfs, CFG) => 0;
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lfs_alloc_ack(&lfs);
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// remove root bookmark for now
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lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
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LFSR_ATTR(0, RM, -1, NULL))) => 0;
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// create entries
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lfsr_mdir_t mdir;
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lfsr_mtree_lookup(&lfs,
|
|
lfs_smax32(
|
|
lfsr_mtree_weight(&lfs) - lfsr_mweight(&lfs),
|
|
0),
|
|
&mdir) => 0;
|
|
for (lfs_size_t i = 0; i < N; i++) {
|
|
// force a compaction?
|
|
if (FORCE_COMPACTION) {
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
}
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
mdir.mid += 1;
|
|
}
|
|
|
|
// try looking up each entry
|
|
lfs_size_t i = 0;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// try looking up each entry
|
|
i = 0;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
# create random entries
|
|
[cases.test_mtree_split_fuzz]
|
|
defines.N = [5, 10, 20, 40, 80, 160]
|
|
defines.FORCE_COMPACTION = [false, true]
|
|
defines.SEED = 'range(100)'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
|
|
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// at least keep track of the number of entries we expect
|
|
lfs_size_t count = 0;
|
|
|
|
uint32_t prng = SEED;
|
|
for (lfs_size_t i = 0; i < N; i++) {
|
|
// choose a pseudo-random mid
|
|
lfs_ssize_t mid = (lfs_ssize_t)(
|
|
TEST_PRNG(&prng) % lfs_max32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs)));
|
|
// fetch mdir
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
// limit our mid to our mdir's weight
|
|
mdir.mid = lfsr_mdir_bid(&lfs, &mdir)-(lfsr_mweight(&lfs)-1)
|
|
+ (mdir.mid % (mdir.u.m.weight+1));
|
|
|
|
// force a compaction?
|
|
if (FORCE_COMPACTION) {
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
}
|
|
|
|
// add to rbyd, potentially splitting the mdir
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
// make sure we can look up the new entry
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
count += 1;
|
|
}
|
|
|
|
// try looking up each entry
|
|
lfs_size_t count_ = 0;
|
|
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
|
|
count_ += 1;
|
|
}
|
|
}
|
|
|
|
// the mtree is a bit difficult to simulate, but we can at least test
|
|
// we ended up with the right number of entries
|
|
assert(count_ == count);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// try looking up each entry
|
|
count_ = 0;
|
|
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
|
|
count_ += 1;
|
|
}
|
|
}
|
|
|
|
// the mtree is a bit difficult to simulate, but we can at least test
|
|
// we ended up with the right number of entries
|
|
assert(count_ == count);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
|
|
## Dropping operations ##
|
|
|
|
# specific drop corner cases
|
|
[cases.test_mtree_drop]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// remove the entry, forcing the mdir to be dropped
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_compact]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// remove the entry, forcing the mdir to be dropped
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
// force mdir to compact while we're removing
|
|
mdir.u.rbyd.eoff = -1;
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_uninline]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
|
|
// remove the entry as we compact, forcing the mdir to be dropped
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_uninline_split_l]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an mdir that needs to be split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
|
|
// remove the left entry as we compact, forcing the left
|
|
// mdir to be dropped
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that one entry is still in the mtree
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that one entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_uninline_split_r]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an mdir that needs to be split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
|
|
// remove the right entry as we compact, forcing the right mdir
|
|
// to be dropped
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that one entry is still in the mtree
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that one entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_uninline_split_both]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an mdir that needs to be split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
|
|
// remove both entries as we compact, forcing both mdirs to be dropped
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL),
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_split_l]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// now add another large entry to the mdir, forcing a split
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mdir to compact
|
|
mdir.u.rbyd.eoff = -1;
|
|
|
|
// remove the left entry as we compact, forcing the left
|
|
// mdir to be dropped
|
|
mdir.mid = 0*lfsr_mweight(&lfs)+0;
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that one entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that one entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_split_r]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// now add another large entry to the mdir, forcing a split
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mdir to compact
|
|
mdir.u.rbyd.eoff = -1;
|
|
|
|
// remove the right entry as we compact, forcing the right
|
|
// mdir to be dropped
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(1, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that one entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that one entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_split_both]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// now add another large entry to the mdir, forcing a split
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mdir to compact
|
|
mdir.u.rbyd.eoff = -1;
|
|
|
|
// remove both entries as we compact, forcing both mdirs to be dropped
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL),
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
# try creating an mtree and then dropping mdirs
|
|
[cases.test_mtree_drop_many]
|
|
defines.N = [5, 10, 20, 40, 80, 160, 320]
|
|
# note we never drop all the way to zero, our mtree does not support this
|
|
defines.REMAINING = [20, 5, 1]
|
|
if = 'N > REMAINING'
|
|
defines.FORCE_COMPACTION = [false, true]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create entries
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs,
|
|
lfs_smax32(
|
|
lfsr_mtree_weight(&lfs) - lfsr_mweight(&lfs),
|
|
0),
|
|
&mdir) => 0;
|
|
for (lfs_size_t i = 0; i < N; i++) {
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
mdir.mid += 1;
|
|
}
|
|
|
|
// remove entries
|
|
for (lfs_size_t i = 0; i < N - REMAINING; i++) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs,
|
|
0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
|
|
// drop should make sure we never have empty mdirs
|
|
assert(lfsr_mtree_ismptr(&lfs) || mdir.u.m.weight > 0);
|
|
|
|
// force a compaction?
|
|
if (FORCE_COMPACTION) {
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
}
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
}
|
|
|
|
// try looking up each entry
|
|
lfs_size_t i = N - REMAINING;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// try looking up each entry
|
|
i = N - REMAINING;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
# this one has some pretty nasty corner cases
|
|
[cases.test_mtree_repeated_drop]
|
|
defines.N = [5, 10, 20, 40]
|
|
# note we never drop all the way to zero, our mtree does not support this
|
|
defines.REMAINING = 1
|
|
defines.FORCE_COMPACTION = [false, true]
|
|
defines.CYCLES = 10
|
|
in = 'lfs.c'
|
|
code = '''
|
|
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
for (lfs_size_t cycle = 0; cycle < CYCLES; cycle++) {
|
|
// create entries, note we may have leftovers from the previous cycle
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs,
|
|
lfs_smax32(
|
|
lfsr_mtree_weight(&lfs) - lfsr_mweight(&lfs),
|
|
0),
|
|
&mdir) => 0;
|
|
for (lfs_size_t i = 0; i < (cycle == 0 ? N : N-1); i++) {
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
mdir.mid += 1;
|
|
}
|
|
|
|
// try looking up each entry
|
|
lfs_size_t i = 0;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
|
|
// remove entries
|
|
for (lfs_size_t i = 0; i < N-1; i++) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs,
|
|
0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
|
|
// drop should make sure we never have empty mdirs
|
|
assert(lfsr_mtree_ismptr(&lfs) || mdir.u.m.weight > 0);
|
|
|
|
// force a compaction?
|
|
if (FORCE_COMPACTION) {
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
}
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
}
|
|
|
|
// try looking up each entry
|
|
i = N - REMAINING;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
}
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// try looking up each entry
|
|
lfs_size_t i = N - REMAINING;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_fuzz]
|
|
defines.N = [5, 10, 20, 40, 80, 160]
|
|
defines.FORCE_COMPACTION = [false, true]
|
|
defines.SEED = 'range(100)'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
|
|
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// at least keep track of the number of entries we expect
|
|
lfs_size_t count = 0;
|
|
|
|
uint32_t prng = SEED;
|
|
for (lfs_size_t i = 0; i < N; i++) {
|
|
// choose a pseudo-random mid
|
|
lfs_ssize_t mid = (lfs_ssize_t)(
|
|
TEST_PRNG(&prng) % lfs_max32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs)));
|
|
// fetch mdir
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
// limit our mid to our mdir's weight
|
|
mdir.mid = lfsr_mdir_bid(&lfs, &mdir)-(lfsr_mweight(&lfs)-1)
|
|
+ (mdir.mid % (mdir.u.m.weight+1));
|
|
// choose to create or delete, note we make sure to never delete to zero
|
|
uint8_t op = (lfsr_mdir_rid(&lfs, &mdir)
|
|
== (lfsr_rid_t)mdir.u.m.weight
|
|
|| (lfsr_mdir_rid(&lfs, &mdir)
|
|
== (lfsr_rid_t)mdir.u.m.weight-1
|
|
&& lfsr_mtree_weight(&lfs)
|
|
== lfsr_mweight(&lfs))
|
|
? 0
|
|
: TEST_PRNG(&prng) % 2);
|
|
|
|
// force a compaction?
|
|
if (FORCE_COMPACTION) {
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
}
|
|
|
|
// create
|
|
if (op == 0) {
|
|
// add to rbyd, potentially splitting the mdir
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
// make sure we can look up the new entry
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
count += 1;
|
|
|
|
// delete
|
|
} else {
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, RM, -1, NULL))) => 0;
|
|
|
|
count -= 1;
|
|
}
|
|
}
|
|
|
|
// try looking up each entry
|
|
lfs_size_t count_ = 0;
|
|
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
|
|
// drop should make sure we never have empty mdirs
|
|
assert(lfsr_mtree_ismptr(&lfs) || mdir.u.m.weight > 0);
|
|
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
|
|
count_ += 1;
|
|
}
|
|
}
|
|
|
|
// the mtree is a bit difficult to simulate, but we can at least test
|
|
// we ended up with the right number of entries
|
|
assert(count_ == count);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// try looking up each entry
|
|
count_ = 0;
|
|
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
|
|
// drop should make sure we never have empty mdirs
|
|
assert(lfsr_mtree_ismptr(&lfs) || mdir.u.m.weight > 0);
|
|
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
|
|
count_ += 1;
|
|
}
|
|
}
|
|
|
|
// the mtree is a bit difficult to simulate, but we can at least test
|
|
// we ended up with the right number of entries
|
|
assert(count_ == count);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
|
|
## Relocation operations ##
|
|
|
|
# specific relocation corner cases
|
|
[cases.test_mtree_relocate]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// prepare mroot with a large attr so the next entry can not fit
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// create a large entry that needs to be uninlined (but not split!)
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mtree has one mdir
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// force mdir to compact twice, this should relocate
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_t old_mdir = mdir;
|
|
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
mdir.u.rbyd.eoff = -1;
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mtree has one mdir
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_relocate_sibling_l]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create 2 large entries that needs to be uninlined and split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// force mdir to compact twice, this should relocate
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_t old_mdir = mdir;
|
|
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
mdir.u.rbyd.eoff = -1;
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_relocate_sibling_r]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create 2 large entries that needs to be uninlined and split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// force mdir to compact twice, this should relocate
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_t old_mdir = mdir;
|
|
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
mdir.u.rbyd.eoff = -1;
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// prepare mroot with an attr
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact twice, this should extend the mroot
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_extend_twice]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
# force our block to compact by setting prog_size=block_size, we don't have
|
|
# any way to indirectly force the intermediary mroots to compact otherwise
|
|
defines.PROG_SIZE = 'BLOCK_SIZE'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// prepare mroot with an attr
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact 2x2 times, this should extend the mroot twice
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
}
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_relocate_mroot]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// prepare mroot with an attr
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact twice, this should extend the mroot
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// force mroot to compact twice again, this should relocate the mroot
|
|
old_mroot = lfs.mroot;
|
|
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_relocate_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// prepare mroot with a large attr so the next entry can not fit
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// create a large entry that needs to be uninlined (but not split!)
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mtree has one mdir
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// setup mroot to need to compact, this should trigger a relocation when
|
|
// we relocate the mdir below
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
// force mdir to compact twice, this should relocate
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_t old_mdir = mdir;
|
|
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
mdir.u.rbyd.eoff = -1;
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated our mdir
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mtree has one mdir
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mdir
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_split_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// setup mroot to need to compact, this should trigger a relocation when
|
|
// we relocate the mdir below
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
// now add another large entry to the mdir, forcing a split
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mdir to compact
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
|
|
// assert mdir was split correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was split correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_drop_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// setup mroot to need to compact, this should trigger a relocation when
|
|
// we relocate the mdir below
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
// remove the entry, forcing the mdir to be dropped
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, RM, -1, NULL))) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was dropped
|
|
assert(lfsr_mtree_weight(&lfs) == 0*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_uninline_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// force mroot to compact once, so the second compact below will trigger
|
|
// a relocation
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// prepare mroot with a large attr so the next entry can not fit
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// create a large entry that needs to be uninlined (but not split!)
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact, this should trigger a relocation
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_uninline_split_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// force mroot to compact once, so the second compact below will trigger
|
|
// a relocation
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// create 2 large entries that needs to be uninlined and split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact, this should trigger a relocation
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert we relocated our mroot
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
# this fuzz covers a lot of configuratinos
|
|
[cases.test_mtree_relocating_fuzz]
|
|
defines.N = [5, 10, 20, 40]
|
|
defines.FORCE_COMPACTION = [false, true]
|
|
defines.BLOCK_CYCLES = [5, 2, 1]
|
|
defines.SEED = 'range(500)'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
|
|
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// at least keep track of the number of entries we expect
|
|
lfs_size_t count = 0;
|
|
|
|
uint32_t prng = SEED;
|
|
for (lfs_size_t i = 0; i < N; i++) {
|
|
// choose a pseudo-random mid
|
|
lfs_ssize_t mid = (lfs_ssize_t)(
|
|
TEST_PRNG(&prng) % lfs_max32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs)));
|
|
// fetch mdir
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
// limit our mid to our mdir's weight
|
|
mdir.mid = lfsr_mdir_bid(&lfs, &mdir)-(lfsr_mweight(&lfs)-1)
|
|
+ (mdir.mid % (mdir.u.m.weight+1));
|
|
// choose to create or delete, note we make sure to never delete to zero
|
|
uint8_t op = (lfsr_mdir_rid(&lfs, &mdir)
|
|
== (lfsr_rid_t)mdir.u.m.weight
|
|
|| (lfsr_mdir_rid(&lfs, &mdir)
|
|
== (lfsr_rid_t)mdir.u.m.weight-1
|
|
&& lfsr_mtree_weight(&lfs)
|
|
== lfsr_mweight(&lfs))
|
|
? 0
|
|
: TEST_PRNG(&prng) % 3);
|
|
|
|
// force a compaction?
|
|
if (FORCE_COMPACTION) {
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
}
|
|
|
|
// create
|
|
if (op == 0) {
|
|
// add to rbyd
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
// make sure we can look up the new entry
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
count += 1;
|
|
|
|
// update
|
|
} else if (op == 1) {
|
|
// update rbyd
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, 0,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
// make sure we can look up the new entry
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
// delete
|
|
} else {
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, RM, -1, NULL))) => 0;
|
|
|
|
count -= 1;
|
|
}
|
|
}
|
|
|
|
// try looking up each entry
|
|
lfs_size_t count_ = 0;
|
|
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
|
|
// drop should make sure we never have empty mdirs
|
|
assert(lfsr_mtree_ismptr(&lfs) || mdir.u.m.weight > 0);
|
|
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
|
|
count_ += 1;
|
|
}
|
|
}
|
|
|
|
// the mtree is a bit difficult to simulate, but we can at least test
|
|
// we ended up with the right number of entries
|
|
assert(count_ == count);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check things stay sane after remount
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
|
|
// try looking up each entry
|
|
count_ = 0;
|
|
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
|
|
// drop should make sure we never have empty mdirs
|
|
assert(lfsr_mtree_ismptr(&lfs) || mdir.u.m.weight > 0);
|
|
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
|
|
count_ += 1;
|
|
}
|
|
}
|
|
|
|
// the mtree is a bit difficult to simulate, but we can at least test
|
|
// we ended up with the right number of entries
|
|
assert(count_ == count);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
|
|
## Neighboring mdir updates ##
|
|
|
|
[cases.test_mtree_neighbor]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// setup our neighbors
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF("a", 1)),
|
|
LFSR_ATTR(1, REG, +1, BUF("b", 1)))) => 0;
|
|
// this test only works if these all fit in the mroot
|
|
assert(lfsr_mtree_ismptr(&lfs));
|
|
|
|
lfsr_openedmdir_t left_neighbor = {
|
|
.mdir={.mid=0, .u.m=lfs.mroot.u.m}};
|
|
lfsr_openedmdir_t right_neighbor = {
|
|
.mdir={.mid=1, .u.m=lfs.mroot.u.m}};
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// insert a new entry, this should update our neighbors
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF("c", 1)))) => 0;
|
|
|
|
// assert that our entry is still in the mtree
|
|
assert(lfs.mroot.u.m.weight == 3);
|
|
|
|
uint8_t buffer[1];
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, 1, LFSR_TAG_REG,
|
|
buffer, 1) => 1;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0);
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &lfs.mroot.u.m,
|
|
sizeof(lfs.mroot.u.m)) == 0);
|
|
assert(right_neighbor.mdir.mid == 2);
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &lfs.mroot.u.m,
|
|
sizeof(lfs.mroot.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_remove_l]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// setup our neighbors
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF("a", 1)),
|
|
LFSR_ATTR(1, REG, +1, BUF("b", 1)))) => 0;
|
|
// this test only works if these all fit in the mroot
|
|
assert(lfsr_mtree_ismptr(&lfs));
|
|
|
|
lfsr_openedmdir_t left_neighbor = {
|
|
.mdir={.mid=0, .u.m=lfs.mroot.u.m}};
|
|
lfsr_openedmdir_t right_neighbor = {
|
|
.mdir={.mid=1, .u.m=lfs.mroot.u.m}};
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// try removing our left entry
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// assert that an entry was removed
|
|
assert(lfs.mroot.u.m.weight == 1);
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == -1);
|
|
assert(right_neighbor.mdir.mid == 0);
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &lfs.mroot.u.m,
|
|
sizeof(lfs.mroot.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_remove_r]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// setup our neighbors
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF("a", 1)),
|
|
LFSR_ATTR(1, REG, +1, BUF("b", 1)))) => 0;
|
|
// this test only works if these all fit in the mroot
|
|
assert(lfsr_mtree_ismptr(&lfs));
|
|
|
|
lfsr_openedmdir_t left_neighbor = {
|
|
.mdir={.mid=0, .u.m=lfs.mroot.u.m}};
|
|
lfsr_openedmdir_t right_neighbor = {
|
|
.mdir={.mid=1, .u.m=lfs.mroot.u.m}};
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// try removing our left entry
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, RM, -1, NULL))) => 0;
|
|
|
|
// assert that an entry was removed
|
|
assert(lfs.mroot.u.m.weight == 1);
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0);
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &lfs.mroot.u.m,
|
|
sizeof(lfs.mroot.u.m)) == 0);
|
|
assert(right_neighbor.mdir.mid == -1);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_uninline]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// setup our neighbors
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF("a", 1)),
|
|
LFSR_ATTR(1, REG, +1, BUF("b", 1)))) => 0;
|
|
// this test only works if these all fit in the mroot
|
|
assert(lfsr_mtree_ismptr(&lfs));
|
|
|
|
lfsr_openedmdir_t left_neighbor = {
|
|
.mdir={.mid=0, .u.m=lfs.mroot.u.m}};
|
|
lfsr_openedmdir_t right_neighbor = {
|
|
.mdir={.mid=1, .u.m=lfs.mroot.u.m}};
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// prepare mroot with a large attr so the next entry can not fit
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// create a large entry that needs to be uninlined (but not split!)
|
|
memset(buffer, 'd', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 2);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "d", 1) == 0);
|
|
|
|
// note that our current implementation splits here, which is suboptimal
|
|
// but saves on code size
|
|
lfsr_mdir_t msibling;
|
|
lfsr_mtree_lookup(&lfs,
|
|
1*lfsr_mweight(&lfs)+0, &msibling) => 0;
|
|
assert(msibling.u.m.weight == 1);
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0*lfsr_mweight(&lfs)+0);
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &mdir.u.m,
|
|
sizeof(mdir.u.m)) == 0);
|
|
assert(right_neighbor.mdir.mid == 1*lfsr_mweight(&lfs)+0);
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &msibling.u.m,
|
|
sizeof(msibling.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_uninline_split]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// setup our neighbors
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF("a", 1)),
|
|
LFSR_ATTR(1, REG, +1, BUF("b", 1)))) => 0;
|
|
// this test only works if these all fit in the mroot
|
|
assert(lfsr_mtree_ismptr(&lfs));
|
|
|
|
lfsr_openedmdir_t left_neighbor = {
|
|
.mdir={.mid=0, .u.m=lfs.mroot.u.m}};
|
|
lfsr_openedmdir_t right_neighbor = {
|
|
.mdir={.mid=1, .u.m=lfs.mroot.u.m}};
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// create 2 large entries that needs to be uninlined and split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'd', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(2, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 2);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
lfsr_mdir_t msibling;
|
|
lfsr_mtree_lookup(&lfs,
|
|
1*lfsr_mweight(&lfs)+0, &msibling) => 0;
|
|
assert(msibling.u.m.weight == 2);
|
|
lfsr_mdir_get(&lfs, &msibling, msibling.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "d", 1) == 0);
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0*lfsr_mweight(&lfs)+0);
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &mdir.u.m,
|
|
sizeof(mdir.u.m)) == 0);
|
|
assert(right_neighbor.mdir.mid == 1*lfsr_mweight(&lfs)+1);
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &msibling.u.m,
|
|
sizeof(msibling.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_split]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'd', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// setup our neighbors
|
|
//
|
|
// note we do this after uninlining! this is because uninlining may
|
|
// aggresively split the mtree if there are already neighbors in the mdir
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid+0, REG, +1, BUF("a", 1)),
|
|
LFSR_ATTR(mdir.mid+2, REG, +1, BUF("b", 1)))) => 0;
|
|
// this test only works if these all fit in the mdir
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
assert(mdir.u.m.weight == 3);
|
|
|
|
lfsr_openedmdir_t left_neighbor = {
|
|
.mdir={.mid=mdir.mid+0, .u.m=mdir.u.m}};
|
|
lfsr_openedmdir_t right_neighbor = {
|
|
.mdir={.mid=mdir.mid+2, .u.m=mdir.u.m}};
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// now add another large entry to the mdir, forcing a split
|
|
memset(buffer, 'e', SIZE);
|
|
mdir.mid = 0*lfsr_mweight(&lfs)+2;
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mdir to compact
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
|
|
// assert mdir was split correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot still has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 2);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "d", 1) == 0);
|
|
|
|
lfsr_mdir_t msibling;
|
|
lfsr_mtree_lookup(&lfs,
|
|
1*lfsr_mweight(&lfs)+0, &msibling) => 0;
|
|
assert(msibling.u.m.weight == 2);
|
|
lfsr_mdir_get(&lfs, &msibling, msibling.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "e", 1) == 0);
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0*lfsr_mweight(&lfs)+0);
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &mdir.u.m,
|
|
sizeof(mdir.u.m)) == 0);
|
|
assert(right_neighbor.mdir.mid == 1*lfsr_mweight(&lfs)+1);
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &msibling.u.m,
|
|
sizeof(msibling.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// setup our neighbors
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF("a", 1)),
|
|
LFSR_ATTR(1, REG, +1, BUF("b", 1)))) => 0;
|
|
// this test only works if these all fit in the mroot
|
|
assert(lfsr_mtree_ismptr(&lfs));
|
|
|
|
lfsr_openedmdir_t left_neighbor = {
|
|
.mdir={.mid=0, .u.m=lfs.mroot.u.m}};
|
|
lfsr_openedmdir_t right_neighbor = {
|
|
.mdir={.mid=1, .u.m=lfs.mroot.u.m}};
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// prepare mroot with an attr
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact twice, this should extend the mroot
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0);
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &lfs.mroot.u.m,
|
|
sizeof(lfs.mroot.u.m)) == 0);
|
|
assert(right_neighbor.mdir.mid == 1);
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &lfs.mroot.u.m,
|
|
sizeof(lfs.mroot.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_relocate]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create an uninlined mdir
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'd', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// setup our neighbors
|
|
//
|
|
// note we do this after uninlining! this is because uninlining may
|
|
// aggresively split the mtree if there are already neighbors in the mdir
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid+0, REG, +1, BUF("a", 1)),
|
|
LFSR_ATTR(mdir.mid+2, REG, +1, BUF("b", 1)))) => 0;
|
|
// this test only works if these all fit in the mdir
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
assert(mdir.u.m.weight == 3);
|
|
|
|
lfsr_openedmdir_t left_neighbor = {
|
|
.mdir={.mid=mdir.mid+0, .u.m=mdir.u.m}};
|
|
lfsr_openedmdir_t right_neighbor = {
|
|
.mdir={.mid=mdir.mid+2, .u.m=mdir.u.m}};
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// force mdir to compact twice, this should relocate
|
|
lfsr_mdir_t old_mdir = mdir;
|
|
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
mdir.u.rbyd.eoff = -1;
|
|
memset(buffer, 'e', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mdir, &mdir) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "c", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 3);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "e", 1) == 0);
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0*lfsr_mweight(&lfs)+0);
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &mdir.u.m, sizeof(mdir.u.m)) == 0);
|
|
assert(right_neighbor.mdir.mid == 0*lfsr_mweight(&lfs)+2);
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &mdir.u.m, sizeof(mdir.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_middle_split]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
//// create a situation where we have 3 mdirs in our tree
|
|
|
|
// first force mroot to uninlined+split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// we should now have 2 mdirs
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
|
|
// now force one of our siblings to split
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mdir to compact
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
|
|
// we should now have 3 mdirs
|
|
assert(lfsr_mtree_weight(&lfs) == 3*lfsr_mweight(&lfs));
|
|
|
|
|
|
//// Now test splitting updates mids correctly
|
|
|
|
// setup our neighbors
|
|
lfsr_openedmdir_t left_neighbor;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0,
|
|
&left_neighbor.mdir) => 0;
|
|
assert(left_neighbor.mdir.u.m.weight == 1);
|
|
|
|
lfsr_openedmdir_t right_neighbor;
|
|
lfsr_mtree_lookup(&lfs, 2*lfsr_mweight(&lfs)+0,
|
|
&right_neighbor.mdir) => 0;
|
|
assert(right_neighbor.mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// cause middle mdir to split
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
memset(buffer, 'd', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mdir to compact
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
|
|
// we should now have 4 mdirs
|
|
assert(lfsr_mtree_weight(&lfs) == 4*lfsr_mweight(&lfs));
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0*lfsr_mweight(&lfs)+0);
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &mdir.u.m, sizeof(mdir.u.m)) == 0);
|
|
|
|
assert(right_neighbor.mdir.mid == 3*lfsr_mweight(&lfs)+0);
|
|
lfsr_mtree_lookup(&lfs, 3*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &mdir.u.m, sizeof(mdir.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_neighbor_middle_drop]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
//// create a situation where we have 3 mdirs in our tree
|
|
|
|
// first force mroot to uninlined+split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// we should now have 2 mdirs
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
|
|
// now force one of our siblings to split
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+1, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
memset(buffer, 'c', SIZE);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mdir to compact
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &mdir, NULL, 0) => 0;
|
|
|
|
// we should now have 3 mdirs
|
|
assert(lfsr_mtree_weight(&lfs) == 3*lfsr_mweight(&lfs));
|
|
|
|
|
|
//// Now test dropping updates mids correctly
|
|
|
|
// setup our neighbors
|
|
lfsr_openedmdir_t left_neighbor;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0,
|
|
&left_neighbor.mdir) => 0;
|
|
assert(left_neighbor.mdir.u.m.weight == 1);
|
|
|
|
lfsr_openedmdir_t right_neighbor;
|
|
lfsr_mtree_lookup(&lfs, 2*lfsr_mweight(&lfs)+0,
|
|
&right_neighbor.mdir) => 0;
|
|
assert(right_neighbor.mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_addopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
|
|
// cause middle mdir to drop
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, RM, -1, NULL))) => 0;
|
|
|
|
// we should now have 2 mdirs
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
|
|
// assert that our neighbors were updated correctly
|
|
assert(left_neighbor.mdir.mid == 0*lfsr_mweight(&lfs)+0);
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(memcmp(&left_neighbor.mdir.u.m, &mdir.u.m, sizeof(mdir.u.m)) == 0);
|
|
|
|
assert(right_neighbor.mdir.mid == 1*lfsr_mweight(&lfs)+0);
|
|
lfsr_mtree_lookup(&lfs, 1*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(memcmp(&right_neighbor.mdir.u.m, &mdir.u.m, sizeof(mdir.u.m)) == 0);
|
|
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &left_neighbor);
|
|
lfsr_mdir_removeopened(&lfs, LFS_TYPE_INTERNAL, &right_neighbor);
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
|
|
## mtree traversal ##
|
|
|
|
# test specific corner cases
|
|
[cases.test_mtree_traversal]
|
|
defines.VALIDATE = [false, true]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// insert a new entry, this should update our neighbors
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF("a", 1)))) => 0;
|
|
|
|
// assert that our entry is still in the mtree
|
|
assert(lfs.mroot.u.m.weight == 1);
|
|
|
|
uint8_t buffer[1];
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, 0, LFSR_TAG_REG,
|
|
buffer, 1) => 1;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// test that we can traverse the tree, keeping track of all blocks we see
|
|
uint8_t *seen = malloc((BLOCK_COUNT+7)/8);
|
|
memset(seen, 0, (BLOCK_COUNT+7)/8);
|
|
|
|
lfsr_traversal_t traversal = LFSR_TRAVERSAL(
|
|
VALIDATE ? LFSR_TRAVERSAL_VALIDATE : 0);
|
|
for (lfs_block_t i = 0;; i++) {
|
|
// a bit hacky, but this catches infinite loops
|
|
assert(i < 2*BLOCK_COUNT);
|
|
|
|
lfsr_tinfo_t tinfo;
|
|
int err = lfsr_traversal_read(&lfs, &traversal, &tinfo);
|
|
assert(!err || err == LFS_ERR_NOENT);
|
|
if (err == LFS_ERR_NOENT) {
|
|
break;
|
|
}
|
|
|
|
if (tinfo.tag == LFSR_TAG_MDIR) {
|
|
printf("traversal: 0x%x mdir 0x{%x,%x}\n",
|
|
tinfo.tag,
|
|
tinfo.u.mdir.u.m.blocks[0], tinfo.u.mdir.u.m.blocks[1]);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.mdir.u.m.blocks[1] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[1] % 8);
|
|
seen[tinfo.u.mdir.u.m.blocks[0] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[0] % 8);
|
|
|
|
} else if (tinfo.tag == LFSR_TAG_BRANCH) {
|
|
printf("traversal: 0x%x btree 0x%x.%x\n",
|
|
tinfo.tag,
|
|
tinfo.u.rbyd.block, tinfo.u.rbyd.trunk);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.rbyd.block / 8] |= 1 << (tinfo.u.rbyd.block % 8);
|
|
|
|
} else {
|
|
// this shouldn't happen
|
|
printf("traversal: 0x%x\n", tinfo.tag);
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
// if traversal worked, we should be able to clobber all other blocks
|
|
uint8_t clobber_buf[BLOCK_SIZE];
|
|
memset(clobber_buf, 0xcc, BLOCK_SIZE);
|
|
for (lfs_block_t block = 0; block < BLOCK_COUNT; block++) {
|
|
if (!(seen[block / 8] & (1 << (block % 8)))) {
|
|
CFG->erase(CFG, block) => 0;
|
|
CFG->prog(CFG, block, 0, clobber_buf, BLOCK_SIZE) => 0;
|
|
}
|
|
}
|
|
free(seen);
|
|
|
|
// and the tree should still work
|
|
|
|
// assert that our entry is still in the mtree
|
|
assert(lfs.mroot.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, 0, LFSR_TAG_REG,
|
|
buffer, 1) => 1;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_traversal_uninline]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
defines.VALIDATE = [false, true]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// prepare mroot with a large attr so the next entry can not fit
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// create a large entry that needs to be uninlined (but not split!)
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
// test that we can traverse the tree, keeping track of all blocks we see
|
|
uint8_t *seen = malloc((BLOCK_COUNT+7)/8);
|
|
memset(seen, 0, (BLOCK_COUNT+7)/8);
|
|
|
|
lfsr_traversal_t traversal = LFSR_TRAVERSAL(
|
|
VALIDATE ? LFSR_TRAVERSAL_VALIDATE : 0);
|
|
for (lfs_block_t i = 0;; i++) {
|
|
// a bit hacky, but this catches infinite loops
|
|
assert(i < 2*BLOCK_COUNT);
|
|
|
|
lfsr_tinfo_t tinfo;
|
|
int err = lfsr_traversal_read(&lfs, &traversal, &tinfo);
|
|
assert(!err || err == LFS_ERR_NOENT);
|
|
if (err == LFS_ERR_NOENT) {
|
|
break;
|
|
}
|
|
|
|
if (tinfo.tag == LFSR_TAG_MDIR) {
|
|
printf("traversal: 0x%x mdir 0x{%x,%x}\n",
|
|
tinfo.tag,
|
|
tinfo.u.mdir.u.m.blocks[0], tinfo.u.mdir.u.m.blocks[1]);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.mdir.u.m.blocks[1] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[1] % 8);
|
|
seen[tinfo.u.mdir.u.m.blocks[0] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[0] % 8);
|
|
|
|
} else if (tinfo.tag == LFSR_TAG_BRANCH) {
|
|
printf("traversal: 0x%x btree 0x%x.%x\n",
|
|
tinfo.tag,
|
|
tinfo.u.rbyd.block, tinfo.u.rbyd.trunk);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.rbyd.block / 8] |= 1 << (tinfo.u.rbyd.block % 8);
|
|
|
|
} else {
|
|
// this shouldn't happen
|
|
printf("traversal: 0x%x\n", tinfo.tag);
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
// if traversal worked, we should be able to clobber all other blocks
|
|
uint8_t clobber_buf[BLOCK_SIZE];
|
|
memset(clobber_buf, 0xcc, BLOCK_SIZE);
|
|
for (lfs_block_t block = 0; block < BLOCK_COUNT; block++) {
|
|
if (!(seen[block / 8] & (1 << (block % 8)))) {
|
|
CFG->erase(CFG, block) => 0;
|
|
CFG->prog(CFG, block, 0, clobber_buf, BLOCK_SIZE) => 0;
|
|
}
|
|
}
|
|
free(seen);
|
|
|
|
// and the tree should still work
|
|
|
|
// assert mdir was unininlined correctly
|
|
assert(lfsr_mtree_weight(&lfs) == 1*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
// assert that our entry is still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_traversal_split]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
defines.VALIDATE = [false, true]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create 2 large entries that needs to be uninlined and split
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(1, REG, +1, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_mdir_t msibling;
|
|
lfsr_mtree_lookup(&lfs,
|
|
1*lfsr_mweight(&lfs)+0, &msibling) => 0;
|
|
assert(msibling.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &msibling, msibling.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
// test that we can traverse the tree, keeping track of all blocks we see
|
|
uint8_t *seen = malloc((BLOCK_COUNT+7)/8);
|
|
memset(seen, 0, (BLOCK_COUNT+7)/8);
|
|
|
|
lfsr_traversal_t traversal = LFSR_TRAVERSAL(
|
|
VALIDATE ? LFSR_TRAVERSAL_VALIDATE : 0);
|
|
for (lfs_block_t i = 0;; i++) {
|
|
// a bit hacky, but this catches infinite loops
|
|
assert(i < 2*BLOCK_COUNT);
|
|
|
|
lfsr_tinfo_t tinfo;
|
|
int err = lfsr_traversal_read(&lfs, &traversal, &tinfo);
|
|
assert(!err || err == LFS_ERR_NOENT);
|
|
if (err == LFS_ERR_NOENT) {
|
|
break;
|
|
}
|
|
|
|
if (tinfo.tag == LFSR_TAG_MDIR) {
|
|
printf("traversal: 0x%x mdir 0x{%x,%x}\n",
|
|
tinfo.tag,
|
|
tinfo.u.mdir.u.m.blocks[0], tinfo.u.mdir.u.m.blocks[1]);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.mdir.u.m.blocks[1] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[1] % 8);
|
|
seen[tinfo.u.mdir.u.m.blocks[0] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[0] % 8);
|
|
|
|
} else if (tinfo.tag == LFSR_TAG_BRANCH) {
|
|
printf("traversal: 0x%x btree 0x%x.%x\n",
|
|
tinfo.tag,
|
|
tinfo.u.rbyd.block, tinfo.u.rbyd.trunk);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.rbyd.block / 8] |= 1 << (tinfo.u.rbyd.block % 8);
|
|
|
|
} else {
|
|
// this shouldn't happen
|
|
printf("traversal: 0x%x\n", tinfo.tag);
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
// if traversal worked, we should be able to clobber all other blocks
|
|
uint8_t clobber_buf[BLOCK_SIZE];
|
|
memset(clobber_buf, 0xcc, BLOCK_SIZE);
|
|
for (lfs_block_t block = 0; block < BLOCK_COUNT; block++) {
|
|
if (!(seen[block / 8] & (1 << (block % 8)))) {
|
|
CFG->erase(CFG, block) => 0;
|
|
CFG->prog(CFG, block, 0, clobber_buf, BLOCK_SIZE) => 0;
|
|
}
|
|
}
|
|
free(seen);
|
|
|
|
// and the tree should still work
|
|
|
|
// assert mdirs were unininlined and split
|
|
assert(lfsr_mtree_weight(&lfs) == 2*lfsr_mweight(&lfs));
|
|
// assert mroot now has no entries
|
|
assert(lfs.mroot.u.m.weight == 0);
|
|
|
|
// assert that our entries are still in the mtree
|
|
lfsr_mtree_lookup(&lfs, 0*lfsr_mweight(&lfs)+0, &mdir) => 0;
|
|
assert(mdir.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "a", 1) == 0);
|
|
|
|
lfsr_mtree_lookup(&lfs,
|
|
1*lfsr_mweight(&lfs)+0, &msibling) => 0;
|
|
assert(msibling.u.m.weight == 1);
|
|
lfsr_mdir_get(&lfs, &msibling, msibling.mid, LFSR_TAG_REG,
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_traversal_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
defines.VALIDATE = [false, true]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// prepare mroot with an attr
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact twice, this should extend the mroot
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
// test that we can traverse the tree, keeping track of all blocks we see
|
|
uint8_t *seen = malloc((BLOCK_COUNT+7)/8);
|
|
memset(seen, 0, (BLOCK_COUNT+7)/8);
|
|
|
|
lfsr_traversal_t traversal = LFSR_TRAVERSAL(
|
|
VALIDATE ? LFSR_TRAVERSAL_VALIDATE : 0);
|
|
for (lfs_block_t i = 0;; i++) {
|
|
// a bit hacky, but this catches infinite loops
|
|
assert(i < 2*BLOCK_COUNT);
|
|
|
|
lfsr_tinfo_t tinfo;
|
|
int err = lfsr_traversal_read(&lfs, &traversal, &tinfo);
|
|
assert(!err || err == LFS_ERR_NOENT);
|
|
if (err == LFS_ERR_NOENT) {
|
|
break;
|
|
}
|
|
|
|
if (tinfo.tag == LFSR_TAG_MDIR) {
|
|
printf("traversal: 0x%x mdir 0x{%x,%x}\n",
|
|
tinfo.tag,
|
|
tinfo.u.mdir.u.m.blocks[0], tinfo.u.mdir.u.m.blocks[1]);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.mdir.u.m.blocks[1] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[1] % 8);
|
|
seen[tinfo.u.mdir.u.m.blocks[0] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[0] % 8);
|
|
|
|
} else if (tinfo.tag == LFSR_TAG_BRANCH) {
|
|
printf("traversal: 0x%x btree 0x%x.%x\n",
|
|
tinfo.tag,
|
|
tinfo.u.rbyd.block, tinfo.u.rbyd.trunk);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.rbyd.block / 8] |= 1 << (tinfo.u.rbyd.block % 8);
|
|
|
|
} else {
|
|
// this shouldn't happen
|
|
printf("traversal: 0x%x\n", tinfo.tag);
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
// if traversal worked, we should be able to clobber all other blocks
|
|
uint8_t clobber_buf[BLOCK_SIZE];
|
|
memset(clobber_buf, 0xcc, BLOCK_SIZE);
|
|
for (lfs_block_t block = 0; block < BLOCK_COUNT; block++) {
|
|
if (!(seen[block / 8] & (1 << (block % 8)))) {
|
|
CFG->erase(CFG, block) => 0;
|
|
CFG->prog(CFG, block, 0, clobber_buf, BLOCK_SIZE) => 0;
|
|
}
|
|
}
|
|
free(seen);
|
|
|
|
// and the tree should still work
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
# larger traversal tests
|
|
[cases.test_mtree_traversal_many]
|
|
defines.N = [5, 10, 20, 40, 80, 160, 320]
|
|
defines.VALIDATE = [false, true]
|
|
defines.FORCE_COMPACTION = [false, true]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// create entries
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs,
|
|
lfs_smax32(
|
|
lfsr_mtree_weight(&lfs) - lfsr_mweight(&lfs),
|
|
0),
|
|
&mdir) => 0;
|
|
for (lfs_size_t i = 0; i < N; i++) {
|
|
// force a compaction?
|
|
if (FORCE_COMPACTION) {
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
}
|
|
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
mdir.mid += 1;
|
|
}
|
|
|
|
// try looking up each entry
|
|
lfs_size_t i = 0;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
|
|
// test that we can traverse the tree, keeping track of all blocks we see
|
|
uint8_t *seen = malloc((BLOCK_COUNT+7)/8);
|
|
memset(seen, 0, (BLOCK_COUNT+7)/8);
|
|
|
|
lfsr_traversal_t traversal = LFSR_TRAVERSAL(
|
|
VALIDATE ? LFSR_TRAVERSAL_VALIDATE : 0);
|
|
for (lfs_block_t i = 0;; i++) {
|
|
// a bit hacky, but this catches infinite loops
|
|
assert(i < 2*BLOCK_COUNT);
|
|
|
|
lfsr_tinfo_t tinfo;
|
|
int err = lfsr_traversal_read(&lfs, &traversal, &tinfo);
|
|
assert(!err || err == LFS_ERR_NOENT);
|
|
if (err == LFS_ERR_NOENT) {
|
|
break;
|
|
}
|
|
|
|
if (tinfo.tag == LFSR_TAG_MDIR) {
|
|
printf("traversal: 0x%x mdir 0x{%x,%x}\n",
|
|
tinfo.tag,
|
|
tinfo.u.mdir.u.m.blocks[0], tinfo.u.mdir.u.m.blocks[1]);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.mdir.u.m.blocks[1] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[1] % 8);
|
|
seen[tinfo.u.mdir.u.m.blocks[0] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[0] % 8);
|
|
|
|
} else if (tinfo.tag == LFSR_TAG_BRANCH) {
|
|
printf("traversal: 0x%x btree 0x%x.%x\n",
|
|
tinfo.tag,
|
|
tinfo.u.rbyd.block, tinfo.u.rbyd.trunk);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.rbyd.block / 8] |= 1 << (tinfo.u.rbyd.block % 8);
|
|
|
|
} else {
|
|
// this shouldn't happen
|
|
printf("traversal: 0x%x\n", tinfo.tag);
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
// if traversal worked, we should be able to clobber all other blocks
|
|
uint8_t clobber_buf[BLOCK_SIZE];
|
|
memset(clobber_buf, 0xcc, BLOCK_SIZE);
|
|
for (lfs_block_t block = 0; block < BLOCK_COUNT; block++) {
|
|
if (!(seen[block / 8] & (1 << (block % 8)))) {
|
|
CFG->erase(CFG, block) => 0;
|
|
CFG->prog(CFG, block, 0, clobber_buf, BLOCK_SIZE) => 0;
|
|
}
|
|
}
|
|
free(seen);
|
|
|
|
// and the tree should still work
|
|
|
|
// try looking up each entry
|
|
i = 0;
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
i += 1;
|
|
}
|
|
}
|
|
assert(i == N);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
[cases.test_mtree_traversal_fuzz]
|
|
defines.N = [5, 10, 20, 40, 80, 160]
|
|
defines.VALIDATE = [false, true]
|
|
defines.FORCE_COMPACTION = [false, true]
|
|
defines.SEED = 'range(100)'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
|
|
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
// remove root bookmark for now
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(0, RM, -1, NULL))) => 0;
|
|
|
|
// at least keep track of the number of entries we expect
|
|
lfs_size_t count = 0;
|
|
|
|
uint32_t prng = SEED;
|
|
for (lfs_size_t i = 0; i < N; i++) {
|
|
// choose a pseudo-random mid
|
|
lfs_ssize_t mid = (lfs_ssize_t)(
|
|
TEST_PRNG(&prng) % lfs_max32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs)));
|
|
// fetch mdir
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
// limit our mid to our mdir's weight
|
|
mdir.mid = lfsr_mdir_bid(&lfs, &mdir)-(lfsr_mweight(&lfs)-1)
|
|
+ (mdir.mid % (mdir.u.m.weight+1));
|
|
|
|
// force a compaction?
|
|
if (FORCE_COMPACTION) {
|
|
mdir.u.rbyd.eoff = -1;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
}
|
|
|
|
// add to rbyd, potentially splitting the mdir
|
|
lfsr_mdir_commit(&lfs, &mdir, LFSR_ATTRS(
|
|
LFSR_ATTR(mdir.mid, REG, +1,
|
|
BUF(&alphas[i % 26], 1)))) => 0;
|
|
|
|
// make sure we can look up the new entry
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
|
|
|
|
count += 1;
|
|
}
|
|
|
|
// try looking up each entry
|
|
lfs_size_t count_ = 0;
|
|
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
|
|
count_ += 1;
|
|
}
|
|
}
|
|
|
|
// the mtree is a bit difficult to simulate, but we can at least test
|
|
// we ended up with the right number of entries
|
|
assert(count_ == count);
|
|
|
|
// test that we can traverse the tree, keeping track of all blocks
|
|
// we see
|
|
uint8_t *seen = malloc((BLOCK_COUNT+7)/8);
|
|
memset(seen, 0, (BLOCK_COUNT+7)/8);
|
|
|
|
lfsr_traversal_t traversal = LFSR_TRAVERSAL(
|
|
VALIDATE ? LFSR_TRAVERSAL_VALIDATE : 0);
|
|
for (lfs_block_t i = 0;; i++) {
|
|
// a bit hacky, but this catches infinite loops
|
|
assert(i < 2*BLOCK_COUNT);
|
|
|
|
lfsr_tinfo_t tinfo;
|
|
int err = lfsr_traversal_read(&lfs, &traversal, &tinfo);
|
|
assert(!err || err == LFS_ERR_NOENT);
|
|
if (err == LFS_ERR_NOENT) {
|
|
break;
|
|
}
|
|
|
|
if (tinfo.tag == LFSR_TAG_MDIR) {
|
|
printf("traversal: 0x%x mdir 0x{%x,%x}\n",
|
|
tinfo.tag,
|
|
tinfo.u.mdir.u.m.blocks[0], tinfo.u.mdir.u.m.blocks[1]);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.mdir.u.m.blocks[1] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[1] % 8);
|
|
seen[tinfo.u.mdir.u.m.blocks[0] / 8]
|
|
|= 1 << (tinfo.u.mdir.u.m.blocks[0] % 8);
|
|
|
|
} else if (tinfo.tag == LFSR_TAG_BRANCH) {
|
|
printf("traversal: 0x%x btree 0x%x.%x\n",
|
|
tinfo.tag,
|
|
tinfo.u.rbyd.block, tinfo.u.rbyd.trunk);
|
|
|
|
// keep track of seen blocks
|
|
seen[tinfo.u.rbyd.block / 8] |= 1 << (tinfo.u.rbyd.block % 8);
|
|
|
|
} else {
|
|
// this shouldn't happen
|
|
printf("traversal: 0x%x\n", tinfo.tag);
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
// if traversal worked, we should be able to clobber all other blocks
|
|
uint8_t clobber_buf[BLOCK_SIZE];
|
|
memset(clobber_buf, 0xcc, BLOCK_SIZE);
|
|
for (lfs_block_t block = 0; block < BLOCK_COUNT; block++) {
|
|
if (!(seen[block / 8] & (1 << (block % 8)))) {
|
|
CFG->erase(CFG, block) => 0;
|
|
CFG->prog(CFG, block, 0, clobber_buf, BLOCK_SIZE) => 0;
|
|
}
|
|
}
|
|
free(seen);
|
|
|
|
// and the tree should still work
|
|
|
|
// try looking up each entry
|
|
count_ = 0;
|
|
|
|
for (lfs_ssize_t mid = 0;
|
|
mid < lfs_smax32(
|
|
lfsr_mtree_weight(&lfs),
|
|
lfsr_mweight(&lfs));
|
|
mid += lfsr_mweight(&lfs)) {
|
|
lfsr_mdir_t mdir;
|
|
lfsr_mtree_lookup(&lfs, mid, &mdir) => 0;
|
|
for (; lfsr_mdir_rid(&lfs, &mdir) < (lfsr_rid_t)mdir.u.m.weight;
|
|
mdir.mid += 1) {
|
|
uint8_t buffer[4];
|
|
lfsr_mdir_get(&lfs, &mdir, mdir.mid, LFSR_TAG_REG,
|
|
buffer, 4) => 1;
|
|
|
|
count_ += 1;
|
|
}
|
|
}
|
|
|
|
// the mtree is a bit difficult to simulate, but we can at least test
|
|
// we ended up with the right number of entries
|
|
assert(count_ == count);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
|
|
## Cycle detection? ##
|
|
|
|
# test that our cycle detector at least works in common cases
|
|
[cases.test_mtree_traversal_mroot_cycle]
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
|
|
uint8_t buf[LFSR_MPTR_DSIZE];
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1,
|
|
MROOT, 0, FROMMPTR(&LFSR_MPTR_MROOTANCHOR(), buf)))) => 0;
|
|
|
|
// technically, cycle detection only needs to work when we're validating
|
|
lfsr_traversal_t traversal = LFSR_TRAVERSAL(LFSR_TRAVERSAL_VALIDATE);
|
|
for (lfs_block_t i = 0;; i++) {
|
|
// assert that we detect the cycle in a reasonable number of iterations
|
|
assert(i < 2*BLOCK_COUNT);
|
|
|
|
lfsr_tinfo_t tinfo;
|
|
int err = lfsr_traversal_read(&lfs, &traversal, &tinfo);
|
|
assert(!err || err == LFS_ERR_CORRUPT);
|
|
if (err == LFS_ERR_CORRUPT) {
|
|
break;
|
|
}
|
|
|
|
if (tinfo.tag == LFSR_TAG_MDIR) {
|
|
printf("traversal: 0x%x mdir 0x{%x,%x}\n",
|
|
tinfo.tag,
|
|
tinfo.u.mdir.u.m.blocks[0], tinfo.u.mdir.u.m.blocks[1]);
|
|
|
|
} else if (tinfo.tag == LFSR_TAG_BRANCH) {
|
|
printf("traversal: 0x%x btree 0x%x.%x\n",
|
|
tinfo.tag,
|
|
tinfo.u.rbyd.block, tinfo.u.rbyd.trunk);
|
|
|
|
} else {
|
|
// this shouldn't happen
|
|
printf("traversal: 0x%x\n", tinfo.tag);
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
'''
|
|
|
|
|
|
## Magic consistency ##
|
|
|
|
# make sure our magic string ("littlefs") shows up in the same place (off=8)
|
|
[cases.test_mtree_magic]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
|
|
// check our magic string
|
|
//
|
|
// note if we lose power we may not have the magic string in both blocks!
|
|
// but we don't lose power in this test so we can assert the magic string
|
|
// is present in both
|
|
uint8_t magic[lfs_max(16, READ_SIZE)];
|
|
CFG->read(CFG, 0, 0, magic, lfs_max(16, READ_SIZE)) => 0;
|
|
assert(memcmp(&magic[8], "littlefs", 8) == 0);
|
|
CFG->read(CFG, 1, 0, magic, lfs_max(16, READ_SIZE)) => 0;
|
|
assert(memcmp(&magic[8], "littlefs", 8) == 0);
|
|
'''
|
|
|
|
[cases.test_mtree_magic_extend]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
|
|
// prepare mroot with an attr
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact twice, this should extend the mroot
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check our magic string
|
|
//
|
|
// note if we lose power we may not have the magic string in both blocks!
|
|
// but we don't lose power in this test so we can assert the magic string
|
|
// is present in both
|
|
uint8_t magic[lfs_max(16, READ_SIZE)];
|
|
CFG->read(CFG, 0, 0, magic, lfs_max(16, READ_SIZE)) => 0;
|
|
assert(memcmp(&magic[8], "littlefs", 8) == 0);
|
|
CFG->read(CFG, 1, 0, magic, lfs_max(16, READ_SIZE)) => 0;
|
|
assert(memcmp(&magic[8], "littlefs", 8) == 0);
|
|
'''
|
|
|
|
[cases.test_mtree_magic_extend_twice]
|
|
# this should be set so only one entry can fit in a metadata block
|
|
defines.SIZE = 'BLOCK_SIZE / 4'
|
|
# make it so blocks relocate every two compacts
|
|
defines.BLOCK_CYCLES = 2
|
|
# force our block to compact by setting prog_size=block_size, we don't have
|
|
# any way to indirectly force the intermediary mroots to compact otherwise
|
|
defines.PROG_SIZE = 'BLOCK_SIZE'
|
|
in = 'lfs.c'
|
|
code = '''
|
|
lfs_t lfs;
|
|
lfsr_format(&lfs, CFG) => 0;
|
|
lfsr_mount(&lfs, CFG) => 0;
|
|
lfs_alloc_ack(&lfs);
|
|
|
|
// prepare mroot with an attr
|
|
uint8_t buffer[SIZE];
|
|
memset(buffer, 'a', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// force mroot to compact 2x2 times, this should extend the mroot twice
|
|
lfsr_mdir_t old_mroot = lfs.mroot;
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, NULL, 0) => 0;
|
|
}
|
|
lfs.mroot.u.rbyd.eoff = -1;
|
|
memset(buffer, 'b', SIZE);
|
|
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
|
|
LFSR_ATTR(-1, UATTR(1), 0, BUF(buffer, SIZE)))) => 0;
|
|
|
|
// assert we relocated
|
|
assert(lfsr_mdir_cmp(&old_mroot, &lfs.mroot) != 0);
|
|
|
|
// assert that our attr is still in the mroot
|
|
lfsr_mdir_get(&lfs, &lfs.mroot, -1, LFSR_TAG_UATTR(1),
|
|
buffer, SIZE) => SIZE;
|
|
assert(memcmp(buffer, "b", 1) == 0);
|
|
|
|
lfsr_unmount(&lfs) => 0;
|
|
|
|
|
|
// check our magic string
|
|
//
|
|
// note if we lose power we may not have the magic string in both blocks!
|
|
// but we don't lose power in this test so we can assert the magic string
|
|
// is present in both
|
|
uint8_t magic[lfs_max(16, READ_SIZE)];
|
|
CFG->read(CFG, 0, 0, magic, lfs_max(16, READ_SIZE)) => 0;
|
|
assert(memcmp(&magic[8], "littlefs", 8) == 0);
|
|
CFG->read(CFG, 1, 0, magic, lfs_max(16, READ_SIZE)) => 0;
|
|
assert(memcmp(&magic[8], "littlefs", 8) == 0);
|
|
'''
|
|
|