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[cases.test_orphans_normal]
in = "lfs.c"
if = 'PROG_SIZE <= 0x3fe' # only works with one crc per commit
code = '''
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
lfs_mkdir(&lfs, "parent") => 0;
lfs_mkdir(&lfs, "parent/orphan") => 0;
lfs_mkdir(&lfs, "parent/child") => 0;
lfs_remove(&lfs, "parent/orphan") => 0;
lfs_unmount(&lfs) => 0;
// corrupt the child's most recent commit, this should be the update
// to the linked-list entry, which should orphan the orphan. Note this
// makes a lot of assumptions about the remove operation.
lfs_mount(&lfs, cfg) => 0;
lfs_dir_t dir;
lfs_dir_open(&lfs, &dir, "parent/child") => 0;
lfs_block_t block = dir.m.pair[0];
lfs_dir_close(&lfs, &dir) => 0;
lfs_unmount(&lfs) => 0;
uint8_t buffer[BLOCK_SIZE];
cfg->read(cfg, block, 0, buffer, BLOCK_SIZE) => 0;
int off = BLOCK_SIZE-1;
while (off >= 0 && buffer[off] == ERASE_VALUE) {
off -= 1;
}
memset(&buffer[off-3], BLOCK_SIZE, 3);
cfg->erase(cfg, block) => 0;
cfg->prog(cfg, block, 0, buffer, BLOCK_SIZE) => 0;
cfg->sync(cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
struct lfs_info info;
lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERR_NOENT;
lfs_stat(&lfs, "parent/child", &info) => 0;
lfs_fs_size(&lfs) => 8;
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERR_NOENT;
lfs_stat(&lfs, "parent/child", &info) => 0;
lfs_fs_size(&lfs) => 8;
// this mkdir should both create a dir and deorphan, so size
// should be unchanged
lfs_mkdir(&lfs, "parent/otherchild") => 0;
lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERR_NOENT;
lfs_stat(&lfs, "parent/child", &info) => 0;
lfs_stat(&lfs, "parent/otherchild", &info) => 0;
lfs_fs_size(&lfs) => 8;
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
lfs_stat(&lfs, "parent/orphan", &info) => LFS_ERR_NOENT;
lfs_stat(&lfs, "parent/child", &info) => 0;
lfs_stat(&lfs, "parent/otherchild", &info) => 0;
lfs_fs_size(&lfs) => 8;
lfs_unmount(&lfs) => 0;
'''
# test that we only run deorphan once per power-cycle
[cases.test_orphans_no_orphans]
in = 'lfs.c'
code = '''
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
// mark the filesystem as having orphans
lfs_fs_preporphans(&lfs, +1) => 0;
lfs_mdir_t mdir;
lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
lfs_dir_commit(&lfs, &mdir, NULL, 0) => 0;
// we should have orphans at this state
assert(lfs_gstate_hasorphans(&lfs.gstate));
lfs_unmount(&lfs) => 0;
// mount
lfs_mount(&lfs, cfg) => 0;
// we should detect orphans
assert(lfs_gstate_hasorphans(&lfs.gstate));
// force consistency
lfs_fs_forceconsistency(&lfs) => 0;
// we should no longer have orphans
assert(!lfs_gstate_hasorphans(&lfs.gstate));
lfs_unmount(&lfs) => 0;
'''
[cases.test_orphans_one_orphan]
in = 'lfs.c'
code = '''
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
// create an orphan
lfs_mdir_t orphan;
lfs_alloc_ckpoint(&lfs);
lfs_dir_alloc(&lfs, &orphan) => 0;
lfs_dir_commit(&lfs, &orphan, NULL, 0) => 0;
// append our orphan and mark the filesystem as having orphans
lfs_fs_preporphans(&lfs, +1) => 0;
lfs_mdir_t mdir;
lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
lfs_pair_tole32(orphan.pair);
lfs_dir_commit(&lfs, &mdir, LFS_MKATTRS(
{LFS_MKTAG(LFS_TYPE_SOFTTAIL, 0x3ff, 8), orphan.pair})) => 0;
// we should have orphans at this state
assert(lfs_gstate_hasorphans(&lfs.gstate));
lfs_unmount(&lfs) => 0;
// mount
lfs_mount(&lfs, cfg) => 0;
// we should detect orphans
assert(lfs_gstate_hasorphans(&lfs.gstate));
// force consistency
lfs_fs_forceconsistency(&lfs) => 0;
// we should no longer have orphans
assert(!lfs_gstate_hasorphans(&lfs.gstate));
lfs_unmount(&lfs) => 0;
'''
# test that we can persist gstate with lfs_fs_mkconsistent
[cases.test_orphans_mkconsistent_no_orphans]
in = 'lfs.c'
code = '''
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
// mark the filesystem as having orphans
lfs_fs_preporphans(&lfs, +1) => 0;
lfs_mdir_t mdir;
lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
lfs_dir_commit(&lfs, &mdir, NULL, 0) => 0;
// we should have orphans at this state
assert(lfs_gstate_hasorphans(&lfs.gstate));
lfs_unmount(&lfs) => 0;
// mount
lfs_mount(&lfs, cfg) => 0;
// we should detect orphans
assert(lfs_gstate_hasorphans(&lfs.gstate));
// force consistency
lfs_fs_mkconsistent(&lfs) => 0;
// we should no longer have orphans
assert(!lfs_gstate_hasorphans(&lfs.gstate));
// remount
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
// we should still have no orphans
assert(!lfs_gstate_hasorphans(&lfs.gstate));
lfs_unmount(&lfs) => 0;
'''
[cases.test_orphans_mkconsistent_one_orphan]
in = 'lfs.c'
code = '''
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
// create an orphan
lfs_mdir_t orphan;
lfs_alloc_ckpoint(&lfs);
lfs_dir_alloc(&lfs, &orphan) => 0;
lfs_dir_commit(&lfs, &orphan, NULL, 0) => 0;
// append our orphan and mark the filesystem as having orphans
lfs_fs_preporphans(&lfs, +1) => 0;
lfs_mdir_t mdir;
lfs_dir_fetch(&lfs, &mdir, (lfs_block_t[2]){0, 1}) => 0;
lfs_pair_tole32(orphan.pair);
lfs_dir_commit(&lfs, &mdir, LFS_MKATTRS(
{LFS_MKTAG(LFS_TYPE_SOFTTAIL, 0x3ff, 8), orphan.pair})) => 0;
// we should have orphans at this state
assert(lfs_gstate_hasorphans(&lfs.gstate));
lfs_unmount(&lfs) => 0;
// mount
lfs_mount(&lfs, cfg) => 0;
// we should detect orphans
assert(lfs_gstate_hasorphans(&lfs.gstate));
// force consistency
lfs_fs_mkconsistent(&lfs) => 0;
// we should no longer have orphans
assert(!lfs_gstate_hasorphans(&lfs.gstate));
// remount
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
// we should still have no orphans
assert(!lfs_gstate_hasorphans(&lfs.gstate));
lfs_unmount(&lfs) => 0;
'''
# reentrant testing for orphans, basically just spam mkdir/remove
[cases.test_orphans_reentrant]
reentrant = true
# TODO fix this case, caused by non-DAG trees
if = '!(DEPTH == 3 && CACHE_SIZE != 64)'
defines = [
{FILES=6, DEPTH=1, CYCLES=20},
{FILES=26, DEPTH=1, CYCLES=20},
{FILES=3, DEPTH=3, CYCLES=20},
]
code = '''
lfs_t lfs;
int err = lfs_mount(&lfs, cfg);
if (err) {
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
}
uint32_t prng = 1;
const char alpha[] = "abcdefghijklmnopqrstuvwxyz";
for (unsigned i = 0; i < CYCLES; i++) {
// create random path
char full_path[256];
for (unsigned d = 0; d < DEPTH; d++) {
sprintf(&full_path[2*d], "/%c", alpha[TEST_PRNG(&prng) % FILES]);
}
// if it does not exist, we create it, else we destroy
struct lfs_info info;
int res = lfs_stat(&lfs, full_path, &info);
if (res == LFS_ERR_NOENT) {
// create each directory in turn, ignore if dir already exists
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
err = lfs_mkdir(&lfs, path);
assert(!err || err == LFS_ERR_EXIST);
}
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
lfs_stat(&lfs, path, &info) => 0;
assert(strcmp(info.name, &path[2*d+1]) == 0);
assert(info.type == LFS_TYPE_DIR);
}
} else {
// is valid dir?
assert(strcmp(info.name, &full_path[2*(DEPTH-1)+1]) == 0);
assert(info.type == LFS_TYPE_DIR);
// try to delete path in reverse order, ignore if dir is not empty
for (int d = DEPTH-1; d >= 0; d--) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
err = lfs_remove(&lfs, path);
assert(!err || err == LFS_ERR_NOTEMPTY);
}
lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
}
}
lfs_unmount(&lfs) => 0;
'''
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