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Merge pull request #82 from geky-bot/lfs-v2.11.0

Browse Source 
Bring in littlefs v2.11.0
This commit is contained in:
Christopher Haster
2025-05-14 21:54:35 -05:00
committed by GitHub
parent 1a4d23203d 952561a764
commit 8c95f83b07
14 changed files with 574 additions and 54 deletions
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27
littlefs/.github/workflows/test.yml vendored
View File

@@ -374,6 +374,22 @@ jobs:
run: |
CFLAGS="$CFLAGS -DLFS_NO_INTRINSICS" make test
test-shrink:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: install
run: |
# need a few things
sudo apt-get update -qq
sudo apt-get install -qq gcc python3 python3-pip
pip3 install toml
gcc --version
python3 --version
- name: test-no-intrinsics
run: |
CFLAGS="$CFLAGS -DLFS_SHRINKNONRELOCATING" make test
# run with all trace options enabled to at least make sure these
# all compile
test-yes-trace:
@@ -454,8 +470,7 @@ jobs:
TESTFLAGS="$TESTFLAGS --valgrind --context=1024 -Gdefault -Pnone" \
make test
# test that compilation is warning free under clang
# run with Clang, mostly to check for Clang-specific warnings
# compile/run with Clang, mostly to check for Clang-specific warnings
test-clang:
runs-on: ubuntu-latest
steps:
@@ -469,12 +484,8 @@ jobs:
python3 --version
- name: test-clang
run: |
# override CFLAGS since Clang does not support -fcallgraph-info
# and -ftrack-macro-expansions
make \
CC=clang \
CFLAGS="$CFLAGS -MMD -g3 -I. -std=c99 -Wall -Wextra -pedantic" \
test
CC=clang \
make test
# run benchmarks
#

11
littlefs/Makefile
View File

@@ -18,6 +18,12 @@ VALGRIND ?= valgrind
GDB ?= gdb
PERF ?= perf
# guess clang or gcc (clang sometimes masquerades as gcc because of
# course it does)
ifneq ($(shell $(CC) --version | grep clang),)
NO_GCC = 1
endif
SRC ?= $(filter-out $(wildcard *.t.* *.b.*),$(wildcard *.c))
OBJ := $(SRC:%.c=$(BUILDDIR)/%.o)
DEP := $(SRC:%.c=$(BUILDDIR)/%.d)
@@ -59,12 +65,15 @@ BENCH_PERF := $(BENCH_RUNNER:%=%.perf)
BENCH_TRACE := $(BENCH_RUNNER:%=%.trace)
BENCH_CSV := $(BENCH_RUNNER:%=%.csv)
CFLAGS += -fcallgraph-info=su
CFLAGS += -g3
CFLAGS += -I.
CFLAGS += -std=c99 -Wall -Wextra -pedantic
CFLAGS += -Wmissing-prototypes
ifndef NO_GCC
CFLAGS += -fcallgraph-info=su
CFLAGS += -ftrack-macro-expansion=0
endif
ifdef DEBUG
CFLAGS += -O0
else

86
littlefs/lfs.c
View File

@@ -3932,7 +3932,9 @@ static int lfs_remove_(lfs_t *lfs, const char *path) {
}
lfs->mlist = dir.next;
if (lfs_tag_type3(tag) == LFS_TYPE_DIR) {
if (lfs_gstate_hasorphans(&lfs->gstate)) {
LFS_ASSERT(lfs_tag_type3(tag) == LFS_TYPE_DIR);
// fix orphan
err = lfs_fs_preporphans(lfs, -1);
if (err) {
@@ -4076,8 +4078,10 @@ static int lfs_rename_(lfs_t *lfs, const char *oldpath, const char *newpath) {
}
lfs->mlist = prevdir.next;
if (prevtag != LFS_ERR_NOENT
&& lfs_tag_type3(prevtag) == LFS_TYPE_DIR) {
if (lfs_gstate_hasorphans(&lfs->gstate)) {
LFS_ASSERT(prevtag != LFS_ERR_NOENT
&& lfs_tag_type3(prevtag) == LFS_TYPE_DIR);
// fix orphan
err = lfs_fs_preporphans(lfs, -1);
if (err) {
@@ -5233,40 +5237,64 @@ static int lfs_fs_gc_(lfs_t *lfs) {
#endif
#ifndef LFS_READONLY
#ifdef LFS_SHRINKNONRELOCATING
static int lfs_shrink_checkblock(void *data, lfs_block_t block) {
lfs_size_t threshold = *((lfs_size_t*)data);
if (block >= threshold) {
return LFS_ERR_NOTEMPTY;
}
return 0;
}
#endif
static int lfs_fs_grow_(lfs_t *lfs, lfs_size_t block_count) {
int err;
if (block_count == lfs->block_count) {
return 0;
}
#ifndef LFS_SHRINKNONRELOCATING
// shrinking is not supported
LFS_ASSERT(block_count >= lfs->block_count);
if (block_count > lfs->block_count) {
lfs->block_count = block_count;
// fetch the root
lfs_mdir_t root;
int err = lfs_dir_fetch(lfs, &root, lfs->root);
if (err) {
return err;
}
// update the superblock
lfs_superblock_t superblock;
lfs_stag_t tag = lfs_dir_get(lfs, &root, LFS_MKTAG(0x7ff, 0x3ff, 0),
LFS_MKTAG(LFS_TYPE_INLINESTRUCT, 0, sizeof(superblock)),
&superblock);
if (tag < 0) {
return tag;
}
lfs_superblock_fromle32(&superblock);
superblock.block_count = lfs->block_count;
lfs_superblock_tole32(&superblock);
err = lfs_dir_commit(lfs, &root, LFS_MKATTRS(
{tag, &superblock}));
#endif
#ifdef LFS_SHRINKNONRELOCATING
if (block_count < lfs->block_count) {
err = lfs_fs_traverse_(lfs, lfs_shrink_checkblock, &block_count, true);
if (err) {
return err;
}
}
#endif
lfs->block_count = block_count;
// fetch the root
lfs_mdir_t root;
err = lfs_dir_fetch(lfs, &root, lfs->root);
if (err) {
return err;
}
// update the superblock
lfs_superblock_t superblock;
lfs_stag_t tag = lfs_dir_get(lfs, &root, LFS_MKTAG(0x7ff, 0x3ff, 0),
LFS_MKTAG(LFS_TYPE_INLINESTRUCT, 0, sizeof(superblock)),
&superblock);
if (tag < 0) {
return tag;
}
lfs_superblock_fromle32(&superblock);
superblock.block_count = lfs->block_count;
lfs_superblock_tole32(&superblock);
err = lfs_dir_commit(lfs, &root, LFS_MKATTRS(
{tag, &superblock}));
if (err) {
return err;
}
return 0;
}
#endif

8
littlefs/lfs.h
View File

@@ -21,7 +21,7 @@ extern "C"
// Software library version
// Major (top-nibble), incremented on backwards incompatible changes
// Minor (bottom-nibble), incremented on feature additions
#define LFS_VERSION 0x0002000a
#define LFS_VERSION 0x0002000b
#define LFS_VERSION_MAJOR (0xffff & (LFS_VERSION >> 16))
#define LFS_VERSION_MINOR (0xffff & (LFS_VERSION >> 0))
@@ -766,7 +766,11 @@ int lfs_fs_gc(lfs_t *lfs);
// Grows the filesystem to a new size, updating the superblock with the new
// block count.
//
// Note: This is irreversible.
// If LFS_SHRINKNONRELOCATING is defined, this function will also accept
// block_counts smaller than the current configuration, after checking
// that none of the blocks that are being removed are in use.
// Note that littlefs's pseudorandom block allocation means that
// this is very unlikely to work in the general case.
//
// Returns a negative error code on failure.
int lfs_fs_grow(lfs_t *lfs, lfs_size_t block_count);

20
littlefs/lfs_util.h
View File

@@ -195,10 +195,10 @@ static inline uint32_t lfs_fromle32(uint32_t a) {
(defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
return __builtin_bswap32(a);
#else
return (((uint8_t*)&a)[0] << 0) |
(((uint8_t*)&a)[1] << 8) |
(((uint8_t*)&a)[2] << 16) |
(((uint8_t*)&a)[3] << 24);
return ((uint32_t)((uint8_t*)&a)[0] << 0) |
((uint32_t)((uint8_t*)&a)[1] << 8) |
((uint32_t)((uint8_t*)&a)[2] << 16) |
((uint32_t)((uint8_t*)&a)[3] << 24);
#endif
}
@@ -218,10 +218,10 @@ static inline uint32_t lfs_frombe32(uint32_t a) {
(defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
return a;
#else
return (((uint8_t*)&a)[0] << 24) |
(((uint8_t*)&a)[1] << 16) |
(((uint8_t*)&a)[2] << 8) |
(((uint8_t*)&a)[3] << 0);
return ((uint32_t)((uint8_t*)&a)[0] << 24) |
((uint32_t)((uint8_t*)&a)[1] << 16) |
((uint32_t)((uint8_t*)&a)[2] << 8) |
((uint32_t)((uint8_t*)&a)[3] << 0);
#endif
}
@@ -231,8 +231,8 @@ static inline uint32_t lfs_tobe32(uint32_t a) {
// Calculate CRC-32 with polynomial = 0x04c11db7
#ifdef LFS_CRC
uint32_t lfs_crc(uint32_t crc, const void *buffer, size_t size) {
return LFS_CRC(crc, buffer, size)
static inline uint32_t lfs_crc(uint32_t crc, const void *buffer, size_t size) {
return LFS_CRC(crc, buffer, size);
}
#else
uint32_t lfs_crc(uint32_t crc, const void *buffer, size_t size);

5
littlefs/runners/bench_runner.c
View File

@@ -123,8 +123,13 @@ typedef struct bench_id {
// bench suites are linked into a custom ld section
#if defined(__APPLE__)
extern struct bench_suite __start__bench_suites __asm("section$start$__DATA$_bench_suites");
extern struct bench_suite __stop__bench_suites __asm("section$end$__DATA$_bench_suites");
#else
extern struct bench_suite __start__bench_suites;
extern struct bench_suite __stop__bench_suites;
#endif
const struct bench_suite *bench_suites = &__start__bench_suites;
#define BENCH_SUITE_COUNT \

5
littlefs/runners/test_runner.c
View File

@@ -136,8 +136,13 @@ typedef struct test_id {
// test suites are linked into a custom ld section
#if defined(__APPLE__)
extern struct test_suite __start__test_suites __asm("section$start$__DATA$_test_suites");
extern struct test_suite __stop__test_suites __asm("section$end$__DATA$_test_suites");
#else
extern struct test_suite __start__test_suites;
extern struct test_suite __stop__test_suites;
#endif
const struct test_suite *test_suites = &__start__test_suites;
#define TEST_SUITE_COUNT \

5
littlefs/scripts/bench.py
View File

@@ -404,12 +404,15 @@ def compile(bench_paths, **args):
f.writeln()
# create suite struct
#
f.writeln('#if defined(__APPLE__)')
f.writeln('__attribute__((section("__DATA,_bench_suites")))')
f.writeln('#else')
# note we place this in the custom bench_suites section with
# minimum alignment, otherwise GCC ups the alignment to
# 32-bytes for some reason
f.writeln('__attribute__((section("_bench_suites"), '
'aligned(1)))')
f.writeln('#endif')
f.writeln('const struct bench_suite __bench__%s__suite = {'
% suite.name)
f.writeln(4*' '+'.name = "%s",' % suite.name)

2
littlefs/scripts/changeprefix.py
View File

@@ -73,7 +73,7 @@ def changefile(from_prefix, to_prefix, from_path, to_path, *,
shutil.copystat(from_path, to_path)
if to_path_temp:
os.rename(to_path, from_path)
shutil.move(to_path, from_path)
elif from_path != '-':
os.remove(from_path)

5
littlefs/scripts/test.py
View File

@@ -412,12 +412,15 @@ def compile(test_paths, **args):
f.writeln()
# create suite struct
#
f.writeln('#if defined(__APPLE__)')
f.writeln('__attribute__((section("__DATA,_test_suites")))')
f.writeln('#else')
# note we place this in the custom test_suites section with
# minimum alignment, otherwise GCC ups the alignment to
# 32-bytes for some reason
f.writeln('__attribute__((section("_test_suites"), '
'aligned(1)))')
f.writeln('#endif')
f.writeln('const struct test_suite __test__%s__suite = {'
% suite.name)
f.writeln(4*' '+'.name = "%s",' % suite.name)

69
littlefs/tests/test_orphans.toml
View File

@@ -207,7 +207,8 @@ code = '''
[cases.test_orphans_reentrant]
reentrant = true
# TODO fix this case, caused by non-DAG trees
if = '!(DEPTH == 3 && CACHE_SIZE != 64)'
# NOTE the second condition is required
if = '!(DEPTH == 3 && CACHE_SIZE != 64) && 2*FILES < BLOCK_COUNT'
defines = [
{FILES=6, DEPTH=1, CYCLES=20},
{FILES=26, DEPTH=1, CYCLES=20},
@@ -271,3 +272,69 @@ code = '''
lfs_unmount(&lfs) => 0;
'''
# non-reentrant testing for orphans, this is the same as reentrant
# testing, but we test way more states than we could under powerloss
[cases.test_orphans_nonreentrant]
# TODO fix this case, caused by non-DAG trees
# NOTE the second condition is required
if = '!(DEPTH == 3 && CACHE_SIZE != 64) && 2*FILES < BLOCK_COUNT'
defines = [
{FILES=6, DEPTH=1, CYCLES=2000},
{FILES=26, DEPTH=1, CYCLES=2000},
{FILES=3, DEPTH=3, CYCLES=2000},
]
code = '''
lfs_t lfs;
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';
int 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';
int err = lfs_remove(&lfs, path);
assert(!err || err == LFS_ERR_NOTEMPTY);
}
lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
}
}
lfs_unmount(&lfs) => 0;
'''

168
littlefs/tests/test_relocations.toml
View File

@@ -341,3 +341,171 @@ code = '''
}
lfs_unmount(&lfs) => 0;
'''
# non-reentrant testing for orphans, this is the same as reentrant
# testing, but we test way more states than we could under powerloss
[cases.test_relocations_nonreentrant]
# TODO fix this case, caused by non-DAG trees
# NOTE the second condition is required
if = '!(DEPTH == 3 && CACHE_SIZE != 64) && 2*FILES < BLOCK_COUNT'
defines = [
{FILES=6, DEPTH=1, CYCLES=2000, BLOCK_CYCLES=1},
{FILES=26, DEPTH=1, CYCLES=2000, BLOCK_CYCLES=1},
{FILES=3, DEPTH=3, CYCLES=2000, BLOCK_CYCLES=1},
]
code = '''
lfs_t lfs;
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';
int 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 (unsigned d = DEPTH-1; d+1 > 0; d--) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
int err = lfs_remove(&lfs, path);
assert(!err || err == LFS_ERR_NOTEMPTY);
}
lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
}
}
lfs_unmount(&lfs) => 0;
'''
# non-reentrant testing for relocations, but now with random renames!
[cases.test_relocations_nonreentrant_renames]
# TODO fix this case, caused by non-DAG trees
# NOTE the second condition is required
if = '!(DEPTH == 3 && CACHE_SIZE != 64) && 2*FILES < BLOCK_COUNT'
defines = [
{FILES=6, DEPTH=1, CYCLES=2000, BLOCK_CYCLES=1},
{FILES=26, DEPTH=1, CYCLES=2000, BLOCK_CYCLES=1},
{FILES=3, DEPTH=3, CYCLES=2000, BLOCK_CYCLES=1},
]
code = '''
lfs_t lfs;
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);
assert(!res || res == LFS_ERR_NOENT);
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';
int 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 {
assert(strcmp(info.name, &full_path[2*(DEPTH-1)+1]) == 0);
assert(info.type == LFS_TYPE_DIR);
// create new random path
char new_path[256];
for (unsigned d = 0; d < DEPTH; d++) {
sprintf(&new_path[2*d], "/%c", alpha[TEST_PRNG(&prng) % FILES]);
}
// if new path does not exist, rename, otherwise destroy
res = lfs_stat(&lfs, new_path, &info);
assert(!res || res == LFS_ERR_NOENT);
if (res == LFS_ERR_NOENT) {
// stop once some dir is renamed
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(&path[2*d], &full_path[2*d]);
path[2*d+2] = '\0';
strcpy(&path[128+2*d], &new_path[2*d]);
path[128+2*d+2] = '\0';
int err = lfs_rename(&lfs, path, path+128);
assert(!err || err == LFS_ERR_NOTEMPTY);
if (!err) {
strcpy(path, path+128);
}
}
for (unsigned d = 0; d < DEPTH; d++) {
char path[1024];
strcpy(path, new_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);
}
lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
} else {
// try to delete path in reverse order,
// ignore if dir is not empty
for (unsigned d = DEPTH-1; d+1 > 0; d--) {
char path[1024];
strcpy(path, full_path);
path[2*d+2] = '\0';
int err = lfs_remove(&lfs, path);
assert(!err || err == LFS_ERR_NOTEMPTY);
}
lfs_stat(&lfs, full_path, &info) => LFS_ERR_NOENT;
}
}
}
lfs_unmount(&lfs) => 0;
'''

109
littlefs/tests/test_shrink.toml Normal file
View File

@@ -0,0 +1,109 @@
# simple shrink
[cases.test_shrink_simple]
defines.BLOCK_COUNT = [10, 15, 20]
defines.AFTER_BLOCK_COUNT = [5, 10, 15, 19]
if = "AFTER_BLOCK_COUNT <= BLOCK_COUNT"
code = '''
#ifdef LFS_SHRINKNONRELOCATING
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
lfs_mount(&lfs, cfg) => 0;
lfs_fs_grow(&lfs, AFTER_BLOCK_COUNT) => 0;
lfs_unmount(&lfs);
if (BLOCK_COUNT != AFTER_BLOCK_COUNT) {
lfs_mount(&lfs, cfg) => LFS_ERR_INVAL;
}
lfs_t lfs2 = lfs;
struct lfs_config cfg2 = *cfg;
cfg2.block_count = AFTER_BLOCK_COUNT;
lfs2.cfg = &cfg2;
lfs_mount(&lfs2, &cfg2) => 0;
lfs_unmount(&lfs2) => 0;
#endif
'''
# shrinking full
[cases.test_shrink_full]
defines.BLOCK_COUNT = [10, 15, 20]
defines.AFTER_BLOCK_COUNT = [5, 7, 10, 12, 15, 17, 20]
defines.FILES_COUNT = [7, 8, 9, 10]
if = "AFTER_BLOCK_COUNT <= BLOCK_COUNT && FILES_COUNT + 2 < BLOCK_COUNT"
code = '''
#ifdef LFS_SHRINKNONRELOCATING
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
// create FILES_COUNT files of BLOCK_SIZE - 50 bytes (to avoid inlining)
lfs_mount(&lfs, cfg) => 0;
for (int i = 0; i < FILES_COUNT + 1; i++) {
lfs_file_t file;
char path[1024];
sprintf(path, "file_%03d", i);
lfs_file_open(&lfs, &file, path,
LFS_O_WRONLY | LFS_O_CREAT | LFS_O_EXCL) => 0;
char wbuffer[BLOCK_SIZE];
memset(wbuffer, 'b', BLOCK_SIZE);
// Ensure one block is taken per file, but that files are not inlined.
lfs_size_t size = BLOCK_SIZE - 0x40;
sprintf(wbuffer, "Hi %03d", i);
lfs_file_write(&lfs, &file, wbuffer, size) => size;
lfs_file_close(&lfs, &file) => 0;
}
int err = lfs_fs_grow(&lfs, AFTER_BLOCK_COUNT);
if (err == 0) {
for (int i = 0; i < FILES_COUNT + 1; i++) {
lfs_file_t file;
char path[1024];
sprintf(path, "file_%03d", i);
lfs_file_open(&lfs, &file, path,
LFS_O_RDONLY ) => 0;
lfs_size_t size = BLOCK_SIZE - 0x40;
char wbuffer[size];
char wbuffer_ref[size];
// Ensure one block is taken per file, but that files are not inlined.
memset(wbuffer_ref, 'b', size);
sprintf(wbuffer_ref, "Hi %03d", i);
lfs_file_read(&lfs, &file, wbuffer, BLOCK_SIZE) => size;
lfs_file_close(&lfs, &file) => 0;
for (lfs_size_t j = 0; j < size; j++) {
wbuffer[j] => wbuffer_ref[j];
}
}
} else {
assert(err == LFS_ERR_NOTEMPTY);
}
lfs_unmount(&lfs) => 0;
if (err == 0 ) {
if ( AFTER_BLOCK_COUNT != BLOCK_COUNT ) {
lfs_mount(&lfs, cfg) => LFS_ERR_INVAL;
}
lfs_t lfs2 = lfs;
struct lfs_config cfg2 = *cfg;
cfg2.block_count = AFTER_BLOCK_COUNT;
lfs2.cfg = &cfg2;
lfs_mount(&lfs2, &cfg2) => 0;
for (int i = 0; i < FILES_COUNT + 1; i++) {
lfs_file_t file;
char path[1024];
sprintf(path, "file_%03d", i);
lfs_file_open(&lfs2, &file, path,
LFS_O_RDONLY ) => 0;
lfs_size_t size = BLOCK_SIZE - 0x40;
char wbuffer[size];
char wbuffer_ref[size];
// Ensure one block is taken per file, but that files are not inlined.
memset(wbuffer_ref, 'b', size);
sprintf(wbuffer_ref, "Hi %03d", i);
lfs_file_read(&lfs2, &file, wbuffer, BLOCK_SIZE) => size;
lfs_file_close(&lfs2, &file) => 0;
for (lfs_size_t j = 0; j < size; j++) {
wbuffer[j] => wbuffer_ref[j];
}
}
lfs_unmount(&lfs2);
}
#endif
'''

108
littlefs/tests/test_superblocks.toml
View File

@@ -524,6 +524,114 @@ code = '''
lfs_unmount(&lfs) => 0;
'''
# mount and grow the filesystem
[cases.test_superblocks_shrink]
defines.BLOCK_COUNT = 'ERASE_COUNT'
defines.BLOCK_COUNT_2 = ['ERASE_COUNT/2', 'ERASE_COUNT/4', '2']
defines.KNOWN_BLOCK_COUNT = [true, false]
code = '''
#ifdef LFS_SHRINKNONRELOCATING
lfs_t lfs;
lfs_format(&lfs, cfg) => 0;
if (KNOWN_BLOCK_COUNT) {
cfg->block_count = BLOCK_COUNT;
} else {
cfg->block_count = 0;
}
// mount with block_size < erase_size
lfs_mount(&lfs, cfg) => 0;
struct lfs_fsinfo fsinfo;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT);
lfs_unmount(&lfs) => 0;
// same size is a noop
lfs_mount(&lfs, cfg) => 0;
lfs_fs_grow(&lfs, BLOCK_COUNT) => 0;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT);
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT);
lfs_unmount(&lfs) => 0;
// grow to new size
lfs_mount(&lfs, cfg) => 0;
lfs_fs_grow(&lfs, BLOCK_COUNT_2) => 0;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT_2);
lfs_unmount(&lfs) => 0;
if (KNOWN_BLOCK_COUNT) {
cfg->block_count = BLOCK_COUNT_2;
} else {
cfg->block_count = 0;
}
lfs_mount(&lfs, cfg) => 0;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT_2);
lfs_unmount(&lfs) => 0;
// mounting with the previous size should fail
cfg->block_count = BLOCK_COUNT;
lfs_mount(&lfs, cfg) => LFS_ERR_INVAL;
if (KNOWN_BLOCK_COUNT) {
cfg->block_count = BLOCK_COUNT_2;
} else {
cfg->block_count = 0;
}
// same size is a noop
lfs_mount(&lfs, cfg) => 0;
lfs_fs_grow(&lfs, BLOCK_COUNT_2) => 0;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT_2);
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT_2);
lfs_unmount(&lfs) => 0;
// do some work
lfs_mount(&lfs, cfg) => 0;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT_2);
lfs_file_t file;
lfs_file_open(&lfs, &file, "test",
LFS_O_CREAT | LFS_O_EXCL | LFS_O_WRONLY) => 0;
lfs_file_write(&lfs, &file, "hello!", 6) => 6;
lfs_file_close(&lfs, &file) => 0;
lfs_unmount(&lfs) => 0;
lfs_mount(&lfs, cfg) => 0;
lfs_fs_stat(&lfs, &fsinfo) => 0;
assert(fsinfo.block_size == BLOCK_SIZE);
assert(fsinfo.block_count == BLOCK_COUNT_2);
lfs_file_open(&lfs, &file, "test", LFS_O_RDONLY) => 0;
uint8_t buffer[256];
lfs_file_read(&lfs, &file, buffer, sizeof(buffer)) => 6;
lfs_file_close(&lfs, &file) => 0;
assert(memcmp(buffer, "hello!", 6) == 0);
lfs_unmount(&lfs) => 0;
#endif
'''
# test that metadata_max does not cause problems for superblock compaction
[cases.test_superblocks_metadata_max]
defines.METADATA_MAX = [