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littlefs/tests/test_mount.toml
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Christopher Haster 0bed3867d8 Adopted more single-char field names 
Limited to nested struct fields where the names don't really matter:

- bptr.data -> bptr.d
- mdir.rbyd -> mdir.r

Ok it actually just ended up those two.

This is on the tail end of some optimization work that ended up
abandoned because of maintainability concerns. But it did highlight that
struct nesting gets a bit out-of-control when trying to both optimize
stack allocations and respect C99's strict aliasing.

Consider further fragmenting lfs3_rbyd_t for fine-grain stack
allocations:

  typedef struct lfs3_rbyd {
      struct lfs3_rtrunkcksum {
          struct lfs3_rtrunk {
              lfs3_rid_t weight;
              struct lfs3_rtrunktrunk {
                  lfs3_block_t blocks[2];
                  lfs3_size_t trunk;
              } rtrunktrunk;
          } rtrunk;
          uint32_t cksum;
      } rtrunkcksum;
      lfs3_size_t eoff;
  } lfs3_rbyd_t;

Accessing fields just starts to get silly:

  rbyd.rtrunkcksum.rtrunk.trunktrunk.trunk

At least single-char field names keeps a little bit of readability:

  rbyd.ck.t.t.trunk

Or for some real examples:

- file->b.o.mdir.rbyd.weight -> file->b.o.mdir.r.weight
- bptr->data.u.disk.block -> bptr->d.u.disk.block
2025-07-15 16:50:06 -05:00

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# Advanced mount tests
after = ['test_mtree', 'test_traversal']
# test we can mount
[cases.test_mount_simple]
code = '''
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# test that various mount flags don't assert and are returned by
# lfs3_fs_stat
[cases.test_mount_flags]
defines.RDONLY = [false, true]
defines.FLUSH = [false, true]
defines.SYNC = [false, true]
defines.REVDBG = [false, true]
defines.REVNOISE = [false, true]
defines.CKPROGS = [false, true]
defines.CKFETCHES = [false, true]
defines.CKMETAPARITY = [false, true]
defines.CKDATACKSUMREADS = [false, true]
defines.MKCONSISTENT = [false, true]
defines.LOOKAHEAD = [false, true]
defines.COMPACT = [false, true]
defines.CKMETA = [false, true]
defines.CKDATA = [false, true]
if = [
'LFS3_IFDEF_REVDBG(true, !REVDBG)',
'LFS3_IFDEF_REVNOISE(true, !REVNOISE)',
'!REVDBG || !REVNOISE',
'LFS3_IFDEF_CKPROGS(true, !CKPROGS)',
'LFS3_IFDEF_CKFETCHES(true, !CKFETCHES)',
'LFS3_IFDEF_CKMETAPARITY(true, !CKMETAPARITY)',
'LFS3_IFDEF_CKDATACKSUMREADS(true, !CKDATACKSUMREADS)',
'!RDONLY || !MKCONSISTENT',
'!RDONLY || !LOOKAHEAD',
'!RDONLY || !COMPACT',
]
code = '''
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
lfs3_mount(&lfs3,
((RDONLY) ? LFS3_M_RDONLY : LFS3_M_RDWR)
| ((FLUSH) ? LFS3_M_FLUSH : 0)
| ((SYNC) ? LFS3_M_SYNC : 0)
| ((REVDBG) ? LFS3_IFDEF_REVDBG(LFS3_M_REVDBG, -1) : 0)
| ((REVNOISE) ? LFS3_IFDEF_REVNOISE(LFS3_M_REVNOISE, -1) : 0)
| ((CKPROGS) ? LFS3_IFDEF_CKPROGS(LFS3_M_CKPROGS, -1) : 0)
| ((CKFETCHES) ? LFS3_IFDEF_CKFETCHES(LFS3_M_CKFETCHES, -1) : 0)
| ((CKMETAPARITY)
? LFS3_IFDEF_CKMETAPARITY(LFS3_M_CKMETAPARITY, -1)
: 0)
| ((CKDATACKSUMREADS)
? LFS3_IFDEF_CKDATACKSUMREADS(LFS3_M_CKDATACKSUMREADS, -1)
: 0)
| ((MKCONSISTENT) ? LFS3_M_MKCONSISTENT : 0)
| ((LOOKAHEAD) ? LFS3_M_LOOKAHEAD : 0)
| ((COMPACT) ? LFS3_M_COMPACT : 0)
| ((CKMETA) ? LFS3_M_CKMETA : 0)
| ((CKDATA) ? LFS3_M_CKDATA : 0),
CFG) => 0;
// lfs3_fs_stat only returns some flags
struct lfs3_fsinfo fsinfo;
lfs3_fs_stat(&lfs3, &fsinfo) => 0;
assert(fsinfo.flags == (
((RDONLY) ? LFS3_I_RDONLY : 0)
| ((FLUSH) ? LFS3_I_FLUSH : 0)
| ((SYNC) ? LFS3_I_SYNC : 0)
| ((REVDBG) ? LFS3_IFDEF_REVDBG(LFS3_M_REVDBG, -1) : 0)
| ((REVNOISE) ? LFS3_IFDEF_REVNOISE(LFS3_M_REVNOISE, -1) : 0)
| ((CKPROGS) ? LFS3_IFDEF_CKPROGS(LFS3_I_CKPROGS, -1) : 0)
| ((CKFETCHES) ? LFS3_IFDEF_CKFETCHES(LFS3_I_CKFETCHES, -1) : 0)
| ((CKMETAPARITY)
? LFS3_IFDEF_CKMETAPARITY(LFS3_I_CKMETAPARITY, -1)
: 0)
| ((CKDATACKSUMREADS)
? LFS3_IFDEF_CKDATACKSUMREADS(LFS3_I_CKDATACKSUMREADS, -1)
: 0)
| ((!MKCONSISTENT) ? LFS3_I_MKCONSISTENT : 0)
| ((!LOOKAHEAD) ? LFS3_I_LOOKAHEAD : 0)
| ((!COMPACT) ? LFS3_I_COMPACT : 0)
// note ckdata implies ckmeta
| ((!CKMETA && !CKDATA) ? LFS3_I_CKMETA : 0)
| ((!CKDATA) ? LFS3_I_CKDATA : 0)));
lfs3_unmount(&lfs3) => 0;
'''
# test that various format flags don't, uh, assert or anything
#
# these end up passed to mount internally
[cases.test_mount_format_flags]
defines.REVDBG = [false, true]
defines.REVNOISE = [false, true]
defines.CKPROGS = [false, true]
defines.CKFETCHES = [false, true]
defines.CKMETAPARITY = [false, true]
defines.CKDATACKSUMREADS = [false, true]
defines.CKMETA = [false, true]
defines.CKDATA = [false, true]
if = [
'LFS3_IFDEF_REVDBG(true, !REVDBG)',
'LFS3_IFDEF_REVNOISE(true, !REVNOISE)',
'!REVDBG || !REVNOISE',
'LFS3_IFDEF_CKPROGS(true, !CKPROGS)',
'LFS3_IFDEF_CKFETCHES(true, !CKFETCHES)',
'LFS3_IFDEF_CKMETAPARITY(true, !CKMETAPARITY)',
'LFS3_IFDEF_CKDATACKSUMREADS(true, !CKDATACKSUMREADS)',
]
code = '''
lfs3_t lfs3;
lfs3_format(&lfs3,
LFS3_F_RDWR
| ((REVDBG) ? LFS3_IFDEF_REVDBG(LFS3_F_REVDBG, -1) : 0)
| ((REVNOISE) ? LFS3_IFDEF_REVNOISE(LFS3_F_REVNOISE, -1) : 0)
| ((CKPROGS) ? LFS3_IFDEF_CKPROGS(LFS3_F_CKPROGS, -1) : 0)
| ((CKFETCHES) ? LFS3_IFDEF_CKFETCHES(LFS3_F_CKFETCHES, -1) : 0)
| ((CKMETAPARITY)
? LFS3_IFDEF_CKMETAPARITY(LFS3_F_CKMETAPARITY, -1)
: 0)
| ((CKDATACKSUMREADS)
? LFS3_IFDEF_CKDATACKSUMREADS(LFS3_F_CKDATACKSUMREADS, -1)
: 0)
| ((CKMETA) ? LFS3_F_CKMETA : 0)
| ((CKDATA) ? LFS3_F_CKDATA : 0),
CFG) => 0;
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# test that on-mount traversals do what they say they do
[cases.test_mount_t_lookahead]
defines.CKMETA = [false, true]
defines.CKDATA = [false, true]
code = '''
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// by default we need a lookahead scan
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
struct lfs3_fsinfo fsinfo;
lfs3_fs_stat(&lfs3, &fsinfo) => 0;
assert(fsinfo.flags == (
LFS3_I_MKCONSISTENT
| LFS3_I_LOOKAHEAD
| LFS3_I_COMPACT
| LFS3_I_CKMETA
| LFS3_I_CKDATA));
lfs3_unmount(&lfs3) => 0;
// with LFS3_M_LOOKAHEAD, mount performs a lookahead scan
lfs3_mount(&lfs3,
LFS3_M_RDWR
| LFS3_M_LOOKAHEAD
| ((CKMETA) ? LFS3_M_CKMETA : 0)
| ((CKDATA) ? LFS3_M_CKDATA : 0),
CFG) => 0;
lfs3_fs_stat(&lfs3, &fsinfo) => 0;
assert(fsinfo.flags == (
LFS3_I_MKCONSISTENT
| LFS3_I_COMPACT
// note ckdata implies ckmeta
| ((!CKMETA && !CKDATA) ? LFS3_I_CKMETA : 0)
| ((!CKDATA) ? LFS3_I_CKDATA : 0)));
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_t_compact]
defines.LOOKAHEAD = [false, true]
defines.CKMETA = [false, true]
defines.CKDATA = [false, true]
defines.SIZE = [
'FILE_CACHE_SIZE/2',
'2*FILE_CACHE_SIZE',
'BLOCK_SIZE/2',
'BLOCK_SIZE',
'2*BLOCK_SIZE',
'8*BLOCK_SIZE',
]
# set compact thresh to minimum
defines.GC_COMPACT_THRESH = 'BLOCK_SIZE/2'
code = '''
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
uint32_t prng = 42;
// first lets create a compactable filesystem
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// write to our mdir until >gc_compact_thresh full
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "jellyfish",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
// hack, don't use the internals like this
uint8_t wbuf[SIZE];
while ((file.b.o.mdir.r.eoff & 0x7fffffff) <= GC_COMPACT_THRESH) {
lfs3_file_rewind(&lfs3, &file) => 0;
for (lfs3_size_t j = 0; j < SIZE; j++) {
wbuf[j] = 'a' + (TEST_PRNG(&prng) % 26);
}
lfs3_file_write(&lfs3, &file, wbuf, SIZE) => SIZE;
lfs3_file_sync(&lfs3, &file) => 0;
}
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
// by default mount does not compact
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
struct lfs3_fsinfo fsinfo;
lfs3_fs_stat(&lfs3, &fsinfo) => 0;
assert(fsinfo.flags == (
LFS3_I_MKCONSISTENT
| LFS3_I_LOOKAHEAD
| LFS3_I_COMPACT
| LFS3_I_CKMETA
| LFS3_I_CKDATA));
lfs3_unmount(&lfs3) => 0;
// with LFS3_M_COMPACT, mount compact any uncompacted blocks
lfs3_mount(&lfs3,
LFS3_M_RDWR
| LFS3_M_COMPACT
| ((LOOKAHEAD) ? LFS3_M_LOOKAHEAD : 0)
| ((CKMETA) ? LFS3_M_CKMETA : 0)
| ((CKDATA) ? LFS3_M_CKDATA : 0),
CFG) => 0;
lfs3_fs_stat(&lfs3, &fsinfo) => 0;
assert(fsinfo.flags == (
LFS3_I_MKCONSISTENT
| ((!LOOKAHEAD) ? LFS3_I_LOOKAHEAD : 0)
// note ckdata implies ckmeta
| ((!CKMETA && !CKDATA) ? LFS3_I_CKMETA : 0)
| ((!CKDATA) ? LFS3_I_CKDATA : 0)));
// mdir should have been compacted
lfs3_file_open(&lfs3, &file, "jellyfish", LFS3_O_RDONLY) => 0;
assert((file.b.o.mdir.r.eoff & 0x7fffffff) <= GC_COMPACT_THRESH);
// check we can still read the file
uint8_t rbuf[SIZE];
lfs3_file_read(&lfs3, &file, rbuf, SIZE) => SIZE;
assert(memcmp(rbuf, wbuf, SIZE) == 0);
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_t_mkconsistent]
defines.LOOKAHEAD = [false, true]
defines.COMPACT = [false, true]
defines.CKMETA = [false, true]
defines.CKDATA = [false, true]
defines.SIZE = 'FILE_CACHE_SIZE/2'
# <=2 => grm-able
# >2 => requires orphans
defines.ORPHANS = [0, 1, 2, 3, 100]
code = '''
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
uint32_t prng = 42;
// first lets create some orphans
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// create two files
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "cuttlefish",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
uint8_t wbuf1[SIZE];
for (lfs3_size_t j = 0; j < SIZE; j++) {
wbuf1[j] = 'a' + (TEST_PRNG(&prng) % 26);
}
lfs3_file_write(&lfs3, &file, wbuf1, SIZE) => SIZE;
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "octopus",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
uint8_t wbuf2[SIZE];
for (lfs3_size_t j = 0; j < SIZE; j++) {
wbuf2[j] = 'a' + (TEST_PRNG(&prng) % 26);
}
lfs3_file_write(&lfs3, &file, wbuf2, SIZE) => SIZE;
lfs3_file_close(&lfs3, &file) => 0;
// create this many orphaned files
//
// anytime we close a not-yet-created desync file, we create an
// orphan, but note we need these to be different files, and we need
// to close them after all open calls, otherwise we just end up with
// one orphan (littlefs is eager to clean up orphans)
//
lfs3_file_t orphans[ORPHANS];
for (lfs3_size_t i = 0; i < ORPHANS; i++) {
char name[256];
sprintf(name, "jellyfish%03x", i);
lfs3_file_open(&lfs3, &orphans[i], name,
LFS3_O_WRONLY
| LFS3_O_CREAT
| LFS3_O_EXCL
| LFS3_O_DESYNC) => 0;
}
for (lfs3_size_t i = 0; i < ORPHANS; i++) {
lfs3_file_close(&lfs3, &orphans[i]) => 0;
}
lfs3_unmount(&lfs3) => 0;
// by default we clean up orphans lazily
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
struct lfs3_fsinfo fsinfo;
lfs3_fs_stat(&lfs3, &fsinfo) => 0;
assert(fsinfo.flags == (
LFS3_I_MKCONSISTENT
| LFS3_I_LOOKAHEAD
| LFS3_I_COMPACT
| LFS3_I_CKMETA
| LFS3_I_CKDATA));
lfs3_unmount(&lfs3) => 0;
// with LFS3_M_MKCONSISTENT, mount cleans up orphans eagerly
lfs3_mount(&lfs3,
LFS3_M_RDWR
| LFS3_M_MKCONSISTENT
| ((LOOKAHEAD) ? LFS3_M_LOOKAHEAD : 0)
| ((COMPACT) ? LFS3_M_COMPACT : 0)
| ((CKMETA) ? LFS3_M_CKMETA : 0)
| ((CKDATA) ? LFS3_M_CKDATA : 0),
CFG) => 0;
lfs3_fs_stat(&lfs3, &fsinfo) => 0;
assert(fsinfo.flags == (
((!LOOKAHEAD) ? LFS3_I_LOOKAHEAD : 0)
| ((!COMPACT) ? LFS3_I_COMPACT : 0)
// note ckdata implies ckmeta
| ((!CKMETA && !CKDATA) ? LFS3_I_CKMETA : 0)
| ((!CKDATA) ? LFS3_I_CKDATA : 0)));
// check we can still read the files
lfs3_file_open(&lfs3, &file, "cuttlefish", LFS3_O_RDONLY) => 0;
uint8_t rbuf[SIZE];
lfs3_file_read(&lfs3, &file, rbuf, SIZE) => SIZE;
assert(memcmp(rbuf, wbuf1, SIZE) == 0);
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "octopus", LFS3_O_RDONLY) => 0;
lfs3_file_read(&lfs3, &file, rbuf, SIZE) => SIZE;
assert(memcmp(rbuf, wbuf2, SIZE) == 0);
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# test we can detect at least fully clobbered blocks
#
# these are tested more thoroughly in test_ck
[cases.test_mount_t_ckmeta]
defines.N = [1, 2, 4, 8, 16, 32, 64]
defines.SIZE = [
'0',
'FILE_CACHE_SIZE/2',
'2*FILE_CACHE_SIZE',
'BLOCK_SIZE/2',
'BLOCK_SIZE',
'2*BLOCK_SIZE',
'8*BLOCK_SIZE',
]
if = '(SIZE*N)/BLOCK_SIZE <= 32'
code = '''
lfs3_block_t i = 0;
while (true) {
// a bit hacky, but this catches infinite loops
assert(i < 2*BLOCK_COUNT);
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// create an interesting filesystem
uint32_t prng = 42;
for (lfs3_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "squid%03x", i);
uint8_t wbuf[SIZE];
for (lfs3_size_t j = 0; j < SIZE; j++) {
wbuf[j] = 'a' + (TEST_PRNG(&prng) % 26);
}
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, name,
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file, wbuf, SIZE) => SIZE;
lfs3_file_close(&lfs3, &file) => 0;
}
// traverse to find blocks
lfs3_traversal_t t;
lfs3_traversal_open(&lfs3, &t, LFS3_T_RDONLY) => 0;
lfs3_block_t k = 0;
for (lfs3_block_t j = 0;; j++) {
assert(j < 2*BLOCK_COUNT);
struct lfs3_tinfo tinfo;
int err = lfs3_traversal_read(&lfs3, &t, &tinfo);
assert(!err || err == LFS3_ERR_NOENT);
if (err == LFS3_ERR_NOENT) {
lfs3_traversal_close(&lfs3, &t) => 0;
lfs3_unmount(&lfs3) => 0;
goto done;
}
// this gets a bit tricky be cause we need to clobber both
// blocks in mdir pairs
if (tinfo.btype == LFS3_BTYPE_MDIR
|| tinfo.btype == LFS3_BTYPE_BTREE) {
if (k == i || k == i+1) {
// clobber this block
printf("clobbering 0x%x\n", tinfo.block);
uint8_t clobber_buf[BLOCK_SIZE];
memset(clobber_buf, 0xcc, BLOCK_SIZE);
CFG->erase(CFG, tinfo.block) => 0;
CFG->prog(CFG, tinfo.block, 0,
clobber_buf, BLOCK_SIZE) => 0;
if (tinfo.btype != LFS3_BTYPE_MDIR || k == i+1) {
i += (tinfo.btype == LFS3_BTYPE_MDIR) ? 2 : 1;
lfs3_traversal_close(&lfs3, &t) => 0;
lfs3_unmount(&lfs3) => 0;
goto clobbered;
}
}
k += 1;
}
}
clobbered:;
// mount with LFS3_M_CKMETA, we should detect clobbered blocks
lfs3_mount(&lfs3,
LFS3_M_RDWR
| LFS3_M_CKMETA,
CFG) => LFS3_ERR_CORRUPT;
}
done:;
'''
[cases.test_mount_t_ckdata]
defines.N = [1, 2, 4, 8, 16, 32, 64]
defines.SIZE = [
'0',
'FILE_CACHE_SIZE/2',
'2*FILE_CACHE_SIZE',
'BLOCK_SIZE/2',
'BLOCK_SIZE',
'2*BLOCK_SIZE',
'8*BLOCK_SIZE',
]
if = '(SIZE*N)/BLOCK_SIZE <= 32'
code = '''
lfs3_block_t i = 0;
while (true) {
// a bit hacky, but this catches infinite loops
assert(i < 2*BLOCK_COUNT);
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// create an interesting filesystem
uint32_t prng = 42;
for (lfs3_size_t i = 0; i < N; i++) {
char name[256];
sprintf(name, "squid%03x", i);
uint8_t wbuf[SIZE];
for (lfs3_size_t j = 0; j < SIZE; j++) {
wbuf[j] = 'a' + (TEST_PRNG(&prng) % 26);
}
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, name,
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file, wbuf, SIZE) => SIZE;
lfs3_file_close(&lfs3, &file) => 0;
}
// traverse to find blocks
lfs3_traversal_t t;
lfs3_traversal_open(&lfs3, &t, LFS3_T_RDONLY) => 0;
lfs3_block_t k = 0;
for (lfs3_block_t j = 0;; j++) {
assert(j < 2*BLOCK_COUNT);
struct lfs3_tinfo tinfo;
int err = lfs3_traversal_read(&lfs3, &t, &tinfo);
assert(!err || err == LFS3_ERR_NOENT);
if (err == LFS3_ERR_NOENT) {
lfs3_traversal_close(&lfs3, &t) => 0;
lfs3_unmount(&lfs3) => 0;
goto done;
}
// this gets a bit tricky be cause we need to clobber both
// blocks in mdir pairs
if (tinfo.btype == LFS3_BTYPE_MDIR
|| tinfo.btype == LFS3_BTYPE_BTREE
|| tinfo.btype == LFS3_BTYPE_DATA) {
if (k == i || k == i+1) {
// clobber this block
printf("clobbering 0x%x\n", tinfo.block);
uint8_t clobber_buf[BLOCK_SIZE];
memset(clobber_buf, 0xcc, BLOCK_SIZE);
CFG->erase(CFG, tinfo.block) => 0;
CFG->prog(CFG, tinfo.block, 0,
clobber_buf, BLOCK_SIZE) => 0;
if (tinfo.btype != LFS3_BTYPE_MDIR || k == i+1) {
i += (tinfo.btype == LFS3_BTYPE_MDIR) ? 2 : 1;
lfs3_traversal_close(&lfs3, &t) => 0;
lfs3_unmount(&lfs3) => 0;
goto clobbered;
}
}
k += 1;
}
}
clobbered:;
// mount with LFS3_M_CKDATA, we should detect clobbered blocks
//
// note LFS3_M_CKDATA implies LFS3_M_CKMETA
lfs3_mount(&lfs3,
LFS3_M_RDWR
| LFS3_M_CKDATA,
CFG) => LFS3_ERR_CORRUPT;
}
done:;
'''
## incompatiblity tests ##
# test that we fail if we find no magic
[cases.test_mount_incompat_no_magic]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// delete the magic string
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR(
LFS3_TAG_RM | LFS3_TAG_MAGIC, 0))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_CORRUPT;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_CORRUPT;
'''
# test that we fail if we find bad magic
[cases.test_mount_incompat_bad_magic]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// tweak the magic string
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_BUF(
LFS3_TAG_MAGIC, 0,
"lottlefs", 8))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_CORRUPT;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_CORRUPT;
'''
# test that we fail to mount after a major version bump
[cases.test_mount_incompat_major]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// bump the major version
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_BUF(
LFS3_TAG_VERSION, 0,
((const uint8_t[2]){
LFS3_DISK_VERSION_MAJOR+1,
0}), 2))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# test that we fail to mount after a minor version bump
[cases.test_mount_incompat_minor]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// bump the minor version
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_BUF(
LFS3_TAG_VERSION, 0,
((const uint8_t[2]){
LFS3_DISK_VERSION_MAJOR,
LFS3_DISK_VERSION_MINOR+1}), 2))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# test that we fail to mount incompatible rcompat flags
[cases.test_mount_incompat_rcompat]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set the nonstandard rcompat flag, this will always be incompatible
// with standard littlefs
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_LE32(
LFS3_TAG_RCOMPAT, 0,
LFS3_RCOMPAT_COMPAT
| LFS3_RCOMPAT_NONSTANDARD))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# test that we fail to mount incompatible wcompat flags
[cases.test_mount_incompat_wcompat]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set the nonstandard rcompat flag, this will always be incompatible
// with standard littlefs
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_LE32(
LFS3_TAG_WCOMPAT, 0,
LFS3_WCOMPAT_COMPAT
| LFS3_WCOMPAT_NONSTANDARD))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
// but we _can_ mount readonly
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# test that an incompatible ocompat flag is a noop
[cases.test_mount_incompat_ocompat]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set the nonstandard ocompat flag, this will always be incompatible
// with standard littlefs
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_LE32(
LFS3_TAG_OCOMPAT, 0,
LFS3_OCOMPAT_COMPAT
| LFS3_OCOMPAT_NONSTANDARD))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should _not_ fail, ocompat should always be ignored
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# test that we fail to mount rdonly images
[cases.test_mount_incompat_rdonly]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set the rdonly flag, this prevents writing from a littlefs image
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_LE32(
LFS3_TAG_WCOMPAT, 0,
LFS3_WCOMPAT_COMPAT
| LFS3_WCOMPAT_RDONLY))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
// but we _can_ mount readonly
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# test that we fail to mount wronly images
[cases.test_mount_incompat_wronly]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set the wronly flag, this prevents reading from a littlefs image
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_LE32(
LFS3_TAG_RCOMPAT, 0,
LFS3_RCOMPAT_COMPAT
| LFS3_RCOMPAT_WRONLY))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# these are just a bit harder to detect
[cases.test_mount_incompat_rcompat_overflow]
defines.OVERFLOW = 72
defines.FLAG = 'range(72)'
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set a really far rcompat flag
//
// note we're messing around with internals to do this! this
// is not a user API
uint8_t overflow[OVERFLOW / 8];
memset(overflow, 0, sizeof(overflow));
overflow[FLAG / 8] |= 1 << (FLAG % 8);
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
uint8_t rcompat_buf[LFS3_LE32_DSIZE];
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_RCOMPAT, 0,
lfs3_data_fromle32(LFS3_RCOMPAT_COMPAT, rcompat_buf),
LFS3_DATA_BUF(overflow, sizeof(overflow))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
[cases.test_mount_incompat_wcompat_overflow]
defines.OVERFLOW = 72
defines.FLAG = 'range(72)'
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
uint8_t flags[9] = {0};
flags[FLAG / 8] |= 1 << (FLAG % 8);
// set a really far wcompat flag
//
// note we're messing around with internals to do this! this
// is not a user API
uint8_t overflow[OVERFLOW / 8];
memset(overflow, 0, sizeof(overflow));
overflow[FLAG / 8] |= 1 << (FLAG % 8);
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
uint8_t wcompat_buf[LFS3_LE32_DSIZE];
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_WCOMPAT, 0,
lfs3_data_fromle32(LFS3_WCOMPAT_COMPAT, wcompat_buf),
LFS3_DATA_BUF(overflow, sizeof(overflow))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
// but we _can_ mount readonly
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_ocompat_overflow]
defines.OVERFLOW = 72
defines.FLAG = 'range(72)'
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set a really far ocompat flag
//
// note we're messing around with internals to do this! this
// is not a user API
uint8_t overflow[OVERFLOW / 8];
memset(overflow, 0, sizeof(overflow));
overflow[FLAG / 8] |= 1 << (FLAG % 8);
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
uint8_t ocompat_buf[LFS3_LE32_DSIZE];
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_OCOMPAT, 0,
lfs3_data_fromle32(LFS3_OCOMPAT_COMPAT, ocompat_buf),
LFS3_DATA_BUF(overflow, sizeof(overflow))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should _not_ fail, ocompat should always be ignored
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# but just appending zeros is _not_ an error
[cases.test_mount_incompat_rcompat_padding]
defines.OVERFLOW = 72
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set a really far rcompat flag
//
// note we're messing around with internals to do this! this
// is not a user API
uint8_t overflow[OVERFLOW / 8];
memset(overflow, 0, sizeof(overflow));
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
uint8_t rcompat_buf[LFS3_LE32_DSIZE];
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_RCOMPAT, 0,
lfs3_data_fromle32(LFS3_RCOMPAT_COMPAT, rcompat_buf),
LFS3_DATA_BUF(overflow, sizeof(overflow))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should _not_ fail, extra zeros should be ignored
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_wcompat_padding]
defines.OVERFLOW = 72
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
uint8_t flags[9] = {0};
flags[FLAG / 8] |= 1 << (FLAG % 8);
// set a really far wcompat flag
//
// note we're messing around with internals to do this! this
// is not a user API
uint8_t overflow[OVERFLOW / 8];
memset(overflow, 0, sizeof(overflow));
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
uint8_t wcompat_buf[LFS3_LE32_DSIZE];
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_WCOMPAT, 0,
lfs3_data_fromle32(LFS3_WCOMPAT_COMPAT, wcompat_buf),
LFS3_DATA_BUF(overflow, sizeof(overflow))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should _not_ fail, extra zeros should be ignored
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_ocompat_padding]
defines.OVERFLOW = 72
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set a really far ocompat flag
//
// note we're messing around with internals to do this! this
// is not a user API
uint8_t overflow[OVERFLOW / 8];
memset(overflow, 0, sizeof(overflow));
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
uint8_t ocompat_buf[LFS3_LE32_DSIZE];
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_OCOMPAT, 0,
lfs3_data_fromle32(LFS3_OCOMPAT_COMPAT, ocompat_buf),
LFS3_DATA_BUF(overflow, sizeof(overflow))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should _not_ fail, extra zeros should be ignored
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# test that we fail to mount incompatible block sizes
[cases.test_mount_incompat_block_size]
defines.INC_BLOCK_SIZE = ['BLOCK_SIZE/2', 'BLOCK_SIZE*2']
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set an incompatible block size
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_GEOMETRY(
LFS3_TAG_GEOMETRY, 0,
(&(lfs3_geometry_t){
INC_BLOCK_SIZE,
BLOCK_COUNT})))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# test that we fail to mount after incompatible block counts
[cases.test_mount_incompat_block_count]
defines.INC_BLOCK_COUNT = ['BLOCK_COUNT*2']
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set an incompatible block count
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_GEOMETRY(
LFS3_TAG_GEOMETRY, 0,
(&(lfs3_geometry_t){
BLOCK_SIZE,
INC_BLOCK_COUNT})))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# test that we fail to mount after incompatible name limit
[cases.test_mount_incompat_name_limit]
defines.INC_NAME_LIMIT = ['LFS3_NAME_MAX*2']
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set an incompatible block size
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_LEB128(
LFS3_TAG_NAMELIMIT, 0,
INC_NAME_LIMIT))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# test that we fail to mount after incompatible file limit
[cases.test_mount_incompat_file_limit]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// set an incompatible file limit
//
// note we're messing around with internals to do this! this
// is not a user API
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
uint8_t file_limit_buf[LFS3_LEB128_DSIZE];
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_FILELIMIT, 0,
// it's a bit difficult to test this since file limit
// is usually our integer limit, but we can force a
// larger value by inserting an extra byte into our
// leb128 encoding
LFS3_DATA_BUF("\xff", 1),
lfs3_data_fromleb128(LFS3_FILE_MAX, file_limit_buf)))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# test what happens if we find an unknown config
[cases.test_mount_incompat_unknown_config]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create an unknown config
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_mdir_commit(&lfs3, &lfs3.mroot, LFS3_RATTRS(
LFS3_RATTR_BUF(
LFS3_TAG_CONFIG + 0x42, 0,
"oh no!", strlen("oh no!")))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_NOTSUP;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_NOTSUP;
'''
# test what happens if we find an unknown file type
[cases.test_mount_incompat_unknown_type]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "a",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi a!", strlen("hi a!")) => strlen("hi a!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh no!", strlen("oh no!")) => strlen("oh no!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "c",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi c!", strlen("hi c!")) => strlen("hi c!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
// change a file's type to something unknown
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
const char *path = "b";
lfs3_mdir_t mdir;
lfs3_did_t did;
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// our file should appear as an unknown type
struct lfs3_info info;
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_t dir;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
// open/mkdir should error
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_RDONLY) => LFS3_ERR_NOTSUP;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT) => LFS3_ERR_NOTSUP;
lfs3_mkdir(&lfs3, "b") => LFS3_ERR_EXIST;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_unknown_type_rm]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "a",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi a!", strlen("hi a!")) => strlen("hi a!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh no!", strlen("oh no!")) => strlen("oh no!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "c",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi c!", strlen("hi c!")) => strlen("hi c!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
// change a file's type to something unknown
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
const char *path = "b";
lfs3_mdir_t mdir;
lfs3_did_t did;
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// our file should appear as an unknown type
struct lfs3_info info;
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_t dir;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
// removing unknown files should still work, if this would leak
// resources the new type should set a wcompat flag
lfs3_remove(&lfs3, "b") => 0;
// check that things look reasonable
lfs3_stat(&lfs3, "b", &info) => LFS3_ERR_NOENT;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_unknown_type_mv_src]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "a",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi a!", strlen("hi a!")) => strlen("hi a!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh no!", strlen("oh no!")) => strlen("oh no!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "c",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi c!", strlen("hi c!")) => strlen("hi c!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
// change a file's type to something unknown
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
const char *path = "b";
lfs3_mdir_t mdir;
lfs3_did_t did;
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// our file should appear as an unknown type
struct lfs3_info info;
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_t dir;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
// renaming unknown files should still work, if this would leak
// resources the new type should set a wcompat flag
lfs3_rename(&lfs3, "b", "c") => 0;
// check that things look reasonable after renaming/removing
lfs3_stat(&lfs3, "c", &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_unknown_type_mv_dst]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "a",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi a!", strlen("hi a!")) => strlen("hi a!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh no!", strlen("oh no!")) => strlen("oh no!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "c",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi c!", strlen("hi c!")) => strlen("hi c!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
// change a file's type to something unknown
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
const char *path = "b";
lfs3_mdir_t mdir;
lfs3_did_t did;
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// our file should appear as an unknown type
struct lfs3_info info;
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_t dir;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
// renaming unknown files should still work, if this would leak
// resources the new type should set a wcompat flag
lfs3_rename(&lfs3, "c", "b") => 0;
// check that things look reasonable after renaming/removing
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_unknown_type_mv_src_dst]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "a",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi a!", strlen("hi a!")) => strlen("hi a!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh no!", strlen("oh no!")) => strlen("oh no!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "c",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh hi!", strlen("oh hi!")) => strlen("oh hi!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
// change a file's type to something unknown
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
const char *path = "b";
lfs3_mdir_t mdir;
lfs3_did_t did;
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
path = "c";
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// our file should appear as an unknown type
struct lfs3_info info;
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_t dir;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
// renaming unknown files should still work, if this would leak
// resources the new type should set a wcompat flag
lfs3_rename(&lfs3, "b", "c") => 0;
// check that things look reasonable after renaming/removing
lfs3_stat(&lfs3, "c", &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_unknown_type_mv_noop]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "a",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi a!", strlen("hi a!")) => strlen("hi a!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh no!", strlen("oh no!")) => strlen("oh no!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "c",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi c!", strlen("hi c!")) => strlen("hi c!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_unmount(&lfs3) => 0;
// change a file's type to something unknown
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
const char *path = "b";
lfs3_mdir_t mdir;
lfs3_did_t did;
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// our file should appear as an unknown type
struct lfs3_info info;
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_t dir;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
// renaming unknown files should still work, if this would leak
// resources the new type should set a wcompat flag
lfs3_rename(&lfs3, "b", "b") => 0;
// check that things look reasonable after renaming/removing
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi c!"));
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_unknown_type_mv_notdir]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "a",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi a!", strlen("hi a!")) => strlen("hi a!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh no!", strlen("oh no!")) => strlen("oh no!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_mkdir(&lfs3, "c") => 0;
lfs3_unmount(&lfs3) => 0;
// change a file's type to something unknown
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
const char *path = "b";
lfs3_mdir_t mdir;
lfs3_did_t did;
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// our file should appear as an unknown type
struct lfs3_info info;
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_t dir;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
// renaming unknown files should still work, if this would leak
// resources the new type should set a wcompat flag
lfs3_rename(&lfs3, "c", "b") => LFS3_ERR_NOTDIR;
// check that things look reasonable after renaming/removing
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
lfs3_unmount(&lfs3) => 0;
'''
[cases.test_mount_incompat_unknown_type_mv_isdir]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// create some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "a",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"hi a!", strlen("hi a!")) => strlen("hi a!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "b",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
lfs3_file_write(&lfs3, &file,
"oh no!", strlen("oh no!")) => strlen("oh no!");
lfs3_file_close(&lfs3, &file) => 0;
lfs3_mkdir(&lfs3, "c") => 0;
lfs3_unmount(&lfs3) => 0;
// change a file's type to something unknown
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
const char *path = "b";
lfs3_mdir_t mdir;
lfs3_did_t did;
lfs3_mtree_pathlookup(&lfs3, &path,
&mdir, NULL, &did) => 0;
lfs3_mdir_commit(&lfs3, &mdir, LFS3_RATTRS(
LFS3_RATTR_CAT(
LFS3_TAG_MASK8 | (LFS3_TAG_NAME + 0x13), 0,
lfs3_data_fromleb128(did, (uint8_t[LFS3_LEB128_DSIZE]){0}),
LFS3_DATA_BUF(path, lfs3_path_namelen(path))))) => 0;
lfs3_unmount(&lfs3) => 0;
// mount
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
// our file should appear as an unknown type
struct lfs3_info info;
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_t dir;
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
// renaming unknown files should still work, if this would leak
// resources the new type should set a wcompat flag
lfs3_rename(&lfs3, "b", "c") => LFS3_ERR_ISDIR;
// check that things look reasonable after renaming/removing
lfs3_stat(&lfs3, "b", &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_open(&lfs3, &dir, "/") => 0;
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, ".") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "..") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "a") == 0);
assert(info.type == LFS3_TYPE_REG);
assert(info.size == strlen("hi a!"));
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "b") == 0);
assert(info.type == LFS3_TYPE_UNKNOWN);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => 0;
assert(strcmp(info.name, "c") == 0);
assert(info.type == LFS3_TYPE_DIR);
assert(info.size == 0);
lfs3_dir_read(&lfs3, &dir, &info) => LFS3_ERR_NOENT;
lfs3_dir_close(&lfs3, &dir) => 0;
lfs3_unmount(&lfs3) => 0;
'''
# Ok, here's an interesting one, test that we fail if we're
# "out-of-phase", i.e. the mrootanchor has been shifted by a small
# number of blocks.
#
# This can happen if we find the wrong mrootanchor (after, say, a magic
# scan), and risks filesystem corruption. To prevent this, we include 2
# phase bits in cksum tags to detect up to a 3 block shift (the maximum
# number of redund mrootanchors)
#
[cases.test_mount_incompat_out_of_phase]
defines.PHASE = [1, 2, 3, 4]
in = 'lfs3.c'
code = '''
// create a superblock
lfs3_t lfs3;
lfs3_format(&lfs3, LFS3_F_RDWR, CFG) => 0;
// with some files
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => 0;
lfs3_file_t file;
lfs3_file_open(&lfs3, &file, "r2d2",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
char wbuf[256];
strcpy(wbuf, "beep boop");
lfs3_file_write(&lfs3, &file, wbuf, strlen(wbuf)) => strlen(wbuf);
lfs3_file_close(&lfs3, &file) => 0;
lfs3_file_open(&lfs3, &file, "c3po",
LFS3_O_WRONLY | LFS3_O_CREAT | LFS3_O_EXCL) => 0;
strcpy(wbuf, "we seem to be made to suffer");
lfs3_file_write(&lfs3, &file, wbuf, strlen(wbuf)) => strlen(wbuf);
lfs3_file_close(&lfs3, &file) => 0;
// shift the filesystem out-of-phase
uint8_t shift_buf[BLOCK_SIZE];
for (lfs3_size_t i = 0; i < 4; i++) {
CFG->read(CFG, 4-1-i, 0, shift_buf, BLOCK_SIZE) => 0;
CFG->erase(CFG, 4-1-i + PHASE) => 0;
CFG->prog(CFG, 4-1-i + PHASE, 0, shift_buf, BLOCK_SIZE) => 0;
memset(shift_buf, 0, BLOCK_SIZE);
strcpy((char*)shift_buf,
"these aren't the files you're looking for ;)");
CFG->erase(CFG, 4-1-i) => 0;
CFG->prog(CFG, 4-1-i, 0, shift_buf, BLOCK_SIZE) => 0;
}
// mount should now fail
lfs3_mount(&lfs3, LFS3_M_RDWR, CFG) => LFS3_ERR_CORRUPT;
lfs3_mount(&lfs3, LFS3_M_RDONLY, CFG) => LFS3_ERR_CORRUPT;
'''
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