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Dropped lfs_t argument from lfsr_data_from* functions

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Turns out access to lfs_t just isn't required, and perhaps for the same
reason these functions can never error.
This commit is contained in:
Christopher Haster
2023-09-22 01:03:58 -05:00
parent 9b3f34eaa6
commit 93ee9d49cf
2 changed files with 35 additions and 50 deletions
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lfs.c
+34 -48
View File
@@ -1421,12 +1421,11 @@ typedef struct lfsr_ecksum {
// 1 leb128 + 1 crc32c => 9 bytes (worst case)
#define LFSR_ECKSUM_DSIZE (5+4)
#define LFSR_DATA_FROMECKSUM(_lfs, _ecksum, _buffer) \
lfsr_data_fromecksum(_lfs, _ecksum, _buffer)
#define LFSR_DATA_FROMECKSUM(_ecksum, _buffer) \
lfsr_data_fromecksum(_ecksum, _buffer)
static lfsr_data_t lfsr_data_fromecksum(lfs_t *lfs, const lfsr_ecksum_t *ecksum,
static lfsr_data_t lfsr_data_fromecksum(const lfsr_ecksum_t *ecksum,
uint8_t buffer[static LFSR_ECKSUM_DSIZE]) {
(void)lfs;
lfs_ssize_t d = 0;
lfs_ssize_t d_ = lfs_toleb128(ecksum->size, &buffer[d], 5);
LFS_ASSERT(d_ >= 0);
@@ -1622,12 +1621,11 @@ static inline int lfsr_grm_xor(lfs_t *lfs,
return lfsr_gdelta_xor(lfs, gdelta, LFSR_GRM_DSIZE, xor);
}
#define LFSR_DATA_FROMGRM(_lfs, _grm, _buffer) \
lfsr_data_fromgrm(_lfs, _grm, _buffer)
#define LFSR_DATA_FROMGRM(_grm, _buffer) \
lfsr_data_fromgrm(_grm, _buffer)
static lfsr_data_t lfsr_data_fromgrm(lfs_t *lfs, const lfsr_grm_t *grm,
static lfsr_data_t lfsr_data_fromgrm(const lfsr_grm_t *grm,
uint8_t buffer[static LFSR_GRM_DSIZE]) {
(void)lfs;
// make sure to zero so we don't leak any info
memset(buffer, 0, LFSR_GRM_DSIZE);
@@ -1693,12 +1691,11 @@ typedef struct lfsr_shrubattrs {
// 2 leb128s => 10 bytes (worst case)
#define LFSR_TRUNK_DSIZE (5+5)
#define LFSR_DATA_SHRUBTRUNK(_lfs, _rbyd, _buffer) \
lfsr_data_fromtrunk(_lfs, _rbyd, _buffer)
#define LFSR_DATA_SHRUBTRUNK(_rbyd, _buffer) \
lfsr_data_fromtrunk(_rbyd, _buffer)
static lfsr_data_t lfsr_data_fromtrunk(lfs_t *lfs, const lfsr_rbyd_t *rbyd,
static lfsr_data_t lfsr_data_fromtrunk(const lfsr_rbyd_t *rbyd,
uint8_t buffer[static LFSR_TRUNK_DSIZE]) {
(void)lfs;
lfs_ssize_t d = 0;
// just write the trunk and weight, the rest of the rbyd is contextual
@@ -2793,8 +2790,7 @@ static int lfsr_rbyd_appendcksum(lfs_t *lfs, lfsr_rbyd_t *rbyd) {
}
uint8_t ecksum_buf[LFSR_ECKSUM_DSIZE];
lfsr_data_t ecksum_data = lfsr_data_fromecksum(lfs, &ecksum,
ecksum_buf);
lfsr_data_t ecksum_data = lfsr_data_fromecksum(&ecksum, ecksum_buf);
lfs_ssize_t d = lfsr_bd_progtag(lfs, rbyd->block, rbyd->eoff,
LFSR_TAG_ECKSUM, 0, lfsr_data_size(&ecksum_data),
&rbyd->cksum);
@@ -3426,12 +3422,11 @@ static inline void lfsr_btree_unerase(lfsr_btree_t *btree) {
// 3 leb128 + 1 crc32c => 19 bytes (worst case)
#define LFSR_BTREE_DSIZE (5+5+5+4)
#define LFSR_DATA_FROMBTREE(_lfs, _btree, _buffer) \
lfsr_data_frombtree(_lfs, _btree, _buffer)
#define LFSR_DATA_FROMBTREE(_btree, _buffer) \
lfsr_data_frombtree(_btree, _buffer)
static lfsr_data_t lfsr_data_frombtree(lfs_t *lfs, const lfsr_rbyd_t *btree,
static lfsr_data_t lfsr_data_frombtree(const lfsr_rbyd_t *btree,
uint8_t buffer[static LFSR_BTREE_DSIZE]) {
(void)lfs;
// upper layers must take care of encoding inlined btrees
LFS_ASSERT(!lfsr_btree_isinlined((const lfsr_btree_t*)btree));
lfs_ssize_t d = 0;
@@ -4139,19 +4134,16 @@ static int lfsr_btree_commit(lfs_t *lfs, lfsr_btree_t *btree,
LFS_ASSERT(sibling.weight > 0);
if (rbyd.weight == 0) {
scratch_attrs[0] = LFSR_ATTR(bid,
BTREE, +rbyd_.weight, FROMBTREE(lfs, &rbyd_,
scratch_buf));
BTREE, +rbyd_.weight, FROMBTREE(&rbyd_, scratch_buf));
scratch_attrs[1] = LFSR_ATTR_NOOP;
} else {
scratch_attrs[0] = LFSR_ATTR(bid+rid,
BTREE, 0, FROMBTREE(lfs, &rbyd_,
scratch_buf));
BTREE, 0, FROMBTREE(&rbyd_, scratch_buf));
scratch_attrs[1] = LFSR_ATTR(bid+rid,
GROW, -rbyd.weight + rbyd_.weight, NULL);
}
scratch_attrs[2] = LFSR_ATTR(bid+rid - rbyd.weight + rbyd_.weight + 1,
BTREE, +sibling.weight, FROMBTREE(lfs, &sibling,
scratch_buf_));
BTREE, +sibling.weight, FROMBTREE(&sibling, scratch_buf_));
if (lfsr_tag_suptype(split_tag) == LFSR_TAG_NAME) {
scratch_attrs[3] = LFSR_ATTR(
bid+rid - rbyd.weight + rbyd_.weight + sibling.weight,
@@ -4249,7 +4241,7 @@ static int lfsr_btree_commit(lfs_t *lfs, lfsr_btree_t *btree,
scratch_attrs[0] = LFSR_ATTR(bid+rid+sibling.weight,
RM, -sibling.weight, NULL);
scratch_attrs[1] = LFSR_ATTR(bid+rid,
BTREE, 0, FROMBTREE(lfs, &rbyd_, scratch_buf));
BTREE, 0, FROMBTREE(&rbyd_, scratch_buf));
scratch_attrs[2] = LFSR_ATTR(bid+rid,
GROW, -rbyd.weight + rbyd_.weight, NULL);
attrs = scratch_attrs;
@@ -4285,7 +4277,7 @@ static int lfsr_btree_commit(lfs_t *lfs, lfsr_btree_t *btree,
attr_count = 1;
} else {
scratch_attrs[0] = LFSR_ATTR(bid+rid,
BTREE, 0, FROMBTREE(lfs, &rbyd_, scratch_buf));
BTREE, 0, FROMBTREE(&rbyd_, scratch_buf));
scratch_attrs[1] = LFSR_ATTR(bid+rid,
GROW, -rbyd.weight + rbyd_.weight, NULL);
attrs = scratch_attrs;
@@ -4577,13 +4569,11 @@ static inline void lfsr_mdir_unerase(lfsr_mdir_t *mdir) {
// 2 leb128 => 10 bytes (worst case)
#define LFSR_MDIR_DSIZE (5+5)
#define LFSR_DATA_FROMMBLOCKS(_lfs, _blocks, _buffer) \
lfsr_data_frommblocks(_lfs, _blocks, _buffer)
#define LFSR_DATA_FROMMBLOCKS(_blocks, _buffer) \
lfsr_data_frommblocks(_blocks, _buffer)
static lfsr_data_t lfsr_data_frommblocks(lfs_t *lfs,
const lfs_block_t blocks[static 2],
static lfsr_data_t lfsr_data_frommblocks(const lfs_block_t blocks[static 2],
uint8_t buffer[static LFSR_MDIR_DSIZE]) {
(void)lfs;
lfs_ssize_t d = 0;
for (int i = 0; i < 2; i++) {
lfs_ssize_t d_ = lfs_toleb128(blocks[i], &buffer[d], 5);
@@ -5084,8 +5074,7 @@ static int lfsr_mdir_commit__(lfs_t *lfs, lfsr_mdir_t *mdir,
int err = lfsr_rbyd_appendattr(lfs, &mdir_.u.r.rbyd,
rid - lfs_smax32(start_rid, 0),
lfsr_tag_mode(attrs[i].tag) | LFSR_TAG_TRUNK,
attrs[i].delta, lfsr_data_fromtrunk(
lfs, rbyd, trunk_buf));
attrs[i].delta, lfsr_data_fromtrunk(rbyd, trunk_buf));
if (err) {
return err;
}
@@ -5249,7 +5238,7 @@ static int lfsr_mdir_compact__(lfs_t *lfs, lfsr_mdir_t *mdir_,
// write the new shrub tag
uint8_t trunk_buf[LFSR_TRUNK_DSIZE];
err = lfsr_rbyd_appendcompactattr(lfs, &mdir_->u.r.rbyd,
tag, weight, lfsr_data_fromtrunk(lfs,
tag, weight, lfsr_data_fromtrunk(
&mdir_->u.r.rbyd, trunk_buf));
if (err) {
LFS_ASSERT(err != LFS_ERR_RANGE);
@@ -5442,7 +5431,7 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
if (attrs[i].tag == LFSR_TAG_GRM) {
// encode to disk
lfsr_grm_t *grm = (lfsr_grm_t*)attrs[i].data.u.b.buffer;
lfsr_data_fromgrm(lfs, grm, lfs->dgrm);
lfsr_data_fromgrm(grm, lfs->dgrm);
// xor with our current gstate to find our initial gdelta
int err = lfsr_grm_xor(lfs, lfs->dgrm,
@@ -5623,13 +5612,11 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
uint8_t msibling_buf[LFSR_MDIR_DSIZE];
err = lfsr_btree_commit(lfs, &mtree_, LFSR_ATTRS(
LFSR_ATTR(mdir_.mid | lfsr_midrmask(lfs),
MDIR, 0, FROMMBLOCKS(lfs, mdir_.u.m.blocks,
mdir_buf)),
MDIR, 0, FROMMBLOCKS(mdir_.u.m.blocks, mdir_buf)),
LFSR_ATTR((mdir_.mid | lfsr_midrmask(lfs))+1,
BRANCH, +lfsr_mleafweight(lfs), DATA(split_data)),
LFSR_ATTR(msibling_.mid | lfsr_midrmask(lfs),
MDIR, 0, FROMMBLOCKS(lfs, msibling_.u.m.blocks,
msibling_buf))));
MDIR, 0, FROMMBLOCKS(msibling_.u.m.blocks, msibling_buf))));
if (err) {
return err;
}
@@ -5676,8 +5663,7 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
uint8_t mdir_buf[LFSR_MDIR_DSIZE];
err = lfsr_btree_commit(lfs, &mtree_, LFSR_ATTRS(
LFSR_ATTR(mdir_.mid | lfsr_midrmask(lfs),
MDIR, 0, FROMMBLOCKS(lfs, mdir_.u.m.blocks,
mdir_buf))));
MDIR, 0, FROMMBLOCKS(mdir_.u.m.blocks, mdir_buf))));
if (err) {
return err;
}
@@ -5699,7 +5685,7 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
lfsr_grm_t *grm = (lfsr_grm_t*)attrs[i].data.u.b.buffer;
uint8_t grm_buf[LFSR_GRM_DSIZE];
err = lfsr_grm_xor(lfs, lfs->dgrm,
lfsr_data_fromgrm(lfs, grm, grm_buf));
lfsr_data_fromgrm(grm, grm_buf));
if (err) {
return err;
}
@@ -5724,7 +5710,7 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
// xor our fix into our gdelta
err = lfsr_grm_xor(lfs, lfs->dgrm,
lfsr_data_fromgrm(lfs, grm, grm_buf));
lfsr_data_fromgrm(grm, grm_buf));
if (err) {
return err;
}
@@ -5750,7 +5736,7 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
mtree_data = LFSR_DATA_BUF(mtree_buf, mtree_.u.i.size);
} else {
mtree_tag = LFSR_TAG_WIDE(MTREE);
mtree_data = lfsr_data_frombtree(lfs, &mtree_.u.r.rbyd, mtree_buf);
mtree_data = lfsr_data_frombtree(&mtree_.u.r.rbyd, mtree_buf);
}
err = lfsr_mdir_commit_(lfs, &mroot_, -1, 0, NULL, LFSR_ATTRS(
@@ -5787,7 +5773,7 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
uint8_t mrootchild_buf[LFSR_MDIR_DSIZE];
err = lfsr_mdir_commit_(lfs, &mrootparent_, -1, -1, NULL, LFSR_ATTRS(
LFSR_ATTR(-1,
MROOT, 0, FROMMBLOCKS(lfs, mrootchild_.u.m.blocks,
MROOT, 0, FROMMBLOCKS(mrootchild_.u.m.blocks,
mrootchild_buf))));
if (err) {
LFS_ASSERT(err != LFS_ERR_RANGE);
@@ -5855,7 +5841,7 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
uint8_t mrootchild_buf[LFSR_MDIR_DSIZE];
err = lfsr_mdir_commit__(lfs, &mrootparent_, -1, -1, LFSR_ATTRS(
LFSR_ATTR(-1,
WIDE(MROOT), 0, FROMMBLOCKS(lfs, mrootchild_.u.m.blocks,
WIDE(MROOT), 0, FROMMBLOCKS(mrootchild_.u.m.blocks,
mrootchild_buf))));
if (err) {
LFS_ASSERT(err != LFS_ERR_NOENT);
@@ -5874,7 +5860,7 @@ static int lfsr_mdir_commit(lfs_t *lfs, lfsr_mdir_t *mdir,
lfs->grm = *(lfsr_grm_t*)attrs[i].data.u.b.buffer;
// keep track of the exact encoding on-disk
lfsr_data_fromgrm(lfs, &lfs->grm, lfs->ggrm);
lfsr_data_fromgrm(&lfs->grm, lfs->ggrm);
}
}
@@ -7936,7 +7922,7 @@ int lfsr_file_opencfg(lfs_t *lfs, lfsr_file_t *file,
// creating a new entry?
if (err == LFS_ERR_NOENT) {
if (lfsr_file_iscreat(flags)) {
if (!lfsr_file_iscreat(flags)) {
return LFS_ERR_NOENT;
}
LFS_ASSERT(lfsr_file_iswriteable(flags));
tests/test_mtree.toml
+1 -2
View File
@@ -4246,8 +4246,7 @@ code = '''
uint8_t buf[LFSR_MDIR_DSIZE];
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
LFSR_ATTR(-1,
MROOT, 0, FROMMBLOCKS(&lfs, LFSR_MBLOCKS_MROOTANCHOR(),
buf)))) => 0;
MROOT, 0, FROMMBLOCKS(LFSR_MBLOCKS_MROOTANCHOR(), buf)))) => 0;
// technically, cycle detection only needs to work when we're validating
lfsr_mtree_traversal_t traversal = LFSR_MTREE_TRAVERSAL(